Search: EDM Patents

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Page Searchable Digest Text
0b-7314 EDM hardware facets and aspects
7314b-7315 EDM system controllers
7315b-7316 Type of System Controller for EDM System
7315b-7318 Open Loop and Human Interface Aspects of EDM System Controller
7318d-7319 input device: keyboard
7318d-7320 input device: keyboard is "unlocked" by entering code
7318d-7321 input device: paper tape reader
7318d-7322 input device: binary coded decimal thumbwheel switch
7318d-7323 input device: mouse
7318d-7324 input device: floppy disk
7318d-7325 input device: switch
7318d-7326 multiple sets of predefined machining parameters
7318d-7327 set of actual input parameters compared to stored groups of input parameters
7318d-7328 parameter: wire diameter
7318d-7329 parameter: wire material
7318d-7330 parameter: workpiece material
7318d-7331 parameter: workpiece thickness
7318d-7332 parameter: workpiece contour tolerance
7318d-7333 parameter: relative feed rate of electrode to workpiece
7315b-7335 Closed Loop Aspects of EDM System Controller
7335d-7336 Wire Cutting: machining conditions according to capacitance of capacitor
7315b-7338 Functions Controlled by EDM System Controller
7338d-7339 turn off of machine is feedback controlled by completion sensor
7338d-7340 turn off machine is feedback controlled by contact sensor
7338d-7341 turn off machine is feedback controlled by disconnection sensor
7338d-7342 turn off machine is feedback controlled by current sensor
7338d-7343 turn off machine is feedback controlled by a computer
7338d-7344 electromagnetic valve is controlled by feedback
7338d-7345 gap width is controlled by feedback control
7338d-7346 electrode movement is controlled by feedback control
7338d-7347 electrode position is controlled by feedback control
7338d-7348 workpiece movement is controlled by feedback control
7338d-7349 rate of feed(speed) of relative electrode movement is controlled by feedback
7338d-7350 Wire Cutting: calculating adjusting machining conditions
7338d-7351 Wire Cutting: calculating the machining speed
7338d-7352 Wire Cutting: Control Average working Current
7338d-7353 Wire Cutting: Vibration Amplitude is Func( shape of cutting path)
7338d-7354 Wire Cutting: Cutting groove width=K by control of Aver. Mach. current
7338d-7355 Wire Cutting: axial feed of wire controlled as f(shape of cutting path)
7338d-7356 Wire Cutting: open voltage is reduced at corner
7315b-7358 Structural, Housing Features of EDM System Controller
7358d-7359 head or machine or frame supported by magnet
7358d-7360 head supporting electrode able to move in three dimensions (X,Y,Z)
7358d-7361 machine surrounded by a metal structure (e.g. faraday cage)
7358d-7362 machiine surrounded by electromagnetically shielded room
7358d-7363 modular work unit(s) for connection with guide means in tank or on table
7358d-7364 frame: miscellaneous or unspecified details
7315b-7366 Mulitiplicities for EDM System Controller
7315b-7368 Miscellaneous Facets of the EDM System Controller
7315b-7370 Auxiliary Features of the EDM System Controller
7315b-7372 Overall Purpose of the EDM System Controller
7372d-7373 NC program checking displays analysis of block of programming data
7315b-7375 Specialized EDM System Controllers
7314b-7378 EDM Power Supply
7378b-7379 Broad Type of Circuitry for EDM power supply
7379d-7380 Power Supply: without any resistor in the circuit
7379d-7381 Power Supply: with ac power lines or mains as original power source
7379d-7382 Power Supply: with high frequency ac oscillator as original power source
7379d-7383 Power Supply: with ac oscillator as original power source
7379d-7384 Power Supply: with low frequency pulse oscillator as original power source
7379d-7385 Power Supply: with high frequency pulse oscillator as original power source
7379d-7386 Power Supply: with dc power source (e.g. battery) as original power source
7379d-7387 Power Supply: four switch inverter directly connected to the load
7379d-7388 Power Supply: two switch inverter directly connected to the load
7379d-7389 Power Supply: with Pulse Width Modulator (PWM)
7379d-7390 Power Supply for Micromachining with capacitors selectively switched
7379d-7391 Pulse Energy: energy from inductor causes discharge
7379d-7392 Pulse Circuit: energy from capacitor causes discharge
7379d-7393 Pulse circuit with capacitor energy controlled by switches
7379d-7394 Pulse Circuit: with capacitor energy released by a switch(es)
7379d-7395 Pulse Circuit: with capacitor energy released by resonance(not switches)
7379d-7396 Pulse Circuit for multi-stepped monopolar pulses
7379d-7397 Pulse Generator: programmable
7379d-7398 Pulse Generator: electrodynamically creating pulses or impulses
7379d-7399 Pulse Generator: miscellaneous or unspecified
7378b-7401 Nature of EDM power supply output in electrical terms, independent of circuit type
7401d-7402 Power Supply: providing non machining pulses to the gap (e.g. triangular)
7401d-7403 Pulse Generator: using discrete pulse groups (i.e. trains).
7401d-7404 Power Supply: Peak Pulse Voltage
7401b-7405 EDM PULSES, BOTH NEGATIVE AND POSITIVE, APPLIED
7405d-7406 Pulse Circuit Supplying non-discrete bipolar pulses
7405d-7407 Pulse Circuit Supplying Discrete Positive and Negative Pulses
7405d-7408 Power Supply: supplying pulses of positive and negative polarity
7405d-7409 Power Supply: pulses of both polarity without off- time between pulses
7405d-7410 Power Supply: pulses of differing polariities so that mean (average) voltage is zero
7405d-7411 Power Supply: using small reverse polarity pulse to turn off main machining pulse
7405d-7412 Power Supply: pulses of opposite polarity preventing stray currents during off-time
7405d-7413 Power Supply: using high frequency ac signal as machining pulses at gap
7405d-7414 Power Supply: using alternating current as machining pulses at gap
7405d-7415 Power Supply: using alternating current during delay time at gap
7401b-7417 EDM PULSE SHAPE is specified
7417d-7418 Power Supply: using irregulary shaped machining pulses (non-rectangular)
7417d-7419 Power Supply: using trapezoidized shaped machining pulses
7417d-7420 Irregular (non-recatngular) pulse shape
7417d-7421 triangular pulse shape
7417d-7422 Power Supply using rectified alternating current as machining pulses at gap
7401b-7424 EDM PULSE WIDTH is specified
7424d-7425 pulse durations is 1 to 5 microseconds
7424d-7426 pulse duration is 5 to 10 microseconds
7424d-7427 pulse duration is 10 to 50 microseconds
7424d-7428 pulse duration is 50 to 100 microseconds (.1 milliseconds)
7424d-7429 pulse duration is 100 to 200 microseconds (.2 millliseconds)
7424d-7430 pulse duration is 200 to 300 microseconds (.3 milliseconds)
7424d-7431 pulse duration is 300 to 400 microseconds (.4 milliseconds)
7378b-7434 Open Loop and Human Interface Aspects of EDM Power Supply Control
7434d-7435 Pulse Generator: with user setting pulse on time and pulse off time (duty cycle)
7434d-7436 Pulse Generator: with user independently setting on-time and off-time
7434d-7437 Pulse Generator: on-time counter
7434d-7438 Pulse Generator: on-time controlled by flip flops in shift register configuration
7434d-7439 Pulse Generator: off-time counter
7434d-7440 Pulse Generator: off-time controlled by flip-flops in shift register configuration
7378b-7442 Closed Loop Aspects of EDM Power Supply Control
7442d-7443 Power Supply: determining gap condition indpendent of polarity of machining pulse
7378b-7445 EDM Power Supply Parameter Controlled by the Open/Closed Loop Signal
7445d-7446 control parameter: adding digitally predetermined OFF time to normal off time
7445d-7447 Controlling: machining pulse parameter
7445d-7448 controlling the discharge current value
7445d-7449 controlling: pulse frequency
7445d-7450 lowering the energy level of the machining pulse:
7445d-7451 controlling the pulse width
7445d-7452 controlling the off-time or rest time of voltage pulse
7445d-7453 lower the pulse duty factor
7445d-7454 raise the pulse duty factor
7445d-7455 immediate cut off of maching pulse in response to short circuit
7445d-7456 immediate cut off of machining pulse in response to an abnormal discharge pulse
7445d-7457 immediate cut off of machining pulse when set energy level is reached
7445d-7458 pulse energy is controlled by feedback control
7445d-7459 level of capacitance in capacitor is controlled by feedback control
7445d-7460 pulse peak current is controlled by feedback control
7445d-7461 pulse duty cycle is controlled by feedback
7445d-7462 pulse on-time is narrowed by feedback control
7445d-7463 pulse ontime is maintained constant but off time is increased by feedback control
7445d-7464 discharge current density is controlled by feedback
7445d-7465 discharge current is controlled by feedback
7445d-7466 discharge voltage is controlled by feedback
7445d-7467 output voltage is controlled by feedback
7445d-7468 pulse frequency is controlled by feedback control
7445d-7469 next pulse is stopped in response to short circuit or arc by feedback control
7445d-7470 cut off ouput switch in response to short circuit
7445d-7471 Wire Cutting: Control of maximum current according to mach. path
7445d-7472 Wire Cutting: Control of pulse duty cycle according to mach. path
7445d-7473 Wire Cutting: Short Circuit Controls Pulse Duty cycle
7445d-7474 Wire Cutting: Short circuit lowers voltage level at machining gap
7445d-7475 Wire Cutting: preventing short circuits by lowering pulse voltage
7445d-7476 Wire Cutting: Control of calculated maximum allowed disch. frequency
7445d-7477 Wire Cutting: Control of Peak Current
7445d-7478 Power Supply: adjusting maximum current limit according to pulse frequency
7445d-7479 Power Supply: making fall time of discharge current greater than rise time
7445d-7480 Pulse Generator: with controllable voltage profile at gap
7445d-7481 Pulse Generator: with controllable current profile at gap
7445d-7482 Power Supply Safety: stopping machining upon failure of a power switch
7378b-7484 EDM Power Supply Structural Features
7484d-7485 Power Supply: modules mounted on a control board with heat sink
7378b-7487 EDM Power Supply Multiplicities
7487d-7488 Power Supply: Pulse polarity reversal for indep. multiple electrode gaps
7487d-7489 Power Supply: supplying power to multiple electrodes
7487d-7490 Power Supply: alternately supplying power to multiple electrodes
7487d-7491 Pulse Generator: multiplicity
7487d-7492 Power supply with dc source and applying ac or HF pulses to gap
7487d-7493 Power Supply: with first and second power supplies in parallel
7378b-7495 Miscellaneous EDM Power Supply Circuitry Features
7495d-7496 Circuit element or subcircuit: binary rate multiplier
7495d-7497 Circuit element: multivibrator
7495d-7498 Circuit element: Schmitt trigger
7495d-7499 Circuit element: current detector
7495d-7500 Circuit element: capacitor
7495d-7501 Circuit element: oil filled capacitor
7495d-7502 Circuit element: variable capacitor
7495d-7503 Circuit element: fuse
7495d-7504 Circuit element: inductor
7495d-7505 Circuit element: transformer
7495d-7506 Circuit element: saturable reactor
7495d-7507 Circuit element: variac
7495d-7508 Circuit element: gas rectifier (vacuum tube diode)
7495d-7509 Circuit element: resistor
7495d-7510 Circuit element: current limiting resistor
7495d-7511 Circuit element: current limiting resistor with associated cooling device
7495d-7512 Circuit element: current limiting resistor multiplicity
7495d-7513 Circuit element: nonlinear resistor
7495d-7514 Circuit element: variable resistor
7495d-7515 Circuit element: diode multiplicity
7495d-7516 Circuit element: diode of unspecified type
7495d-7517 Circuit element: light emitting diode or LED or luminous diode
7495d-7518 Circuit element: zener diode
7495d-7519 Circuit element: lamp
7495d-7520 Circuit element: unspecified switch
7495d-7521 Circuit element: unspecified switch multiplicity
7495d-7522 Circuit element: two throw-in switch
7495d-7523 Circuit element: pneumatically controlled switch
7495d-7524 Circuit element: thyristor
7495d-7525 Circuit element: vacuum tube transistor (e.g. pentode)
7495d-7526 Circuit element: silicon controlled rectifier (SCR)
7495d-7527 Circuit element: transistor
7495d-7528 Circuit element: bipolar transistor
7495d-7529 Circuit element: phototransistor
7495d-7530 Circuit element: FET (field effect transistor)
7495d-7531 Circuit element: MOSFET
7495d-7532 Circuit element: transistor multiplicity
7495d-7533 Circuit element: transistors in Darlington Configuration
7495d-7534 Circuit elements: transistors in pushpull configuration
7495d-7535 Circuit element: flip flop
7495d-7536 Circuit element: AND gate
7495d-7537 Circuit element: NAND gate
7495d-7538 Circuit element: OR gate
7495d-7539 Circuit element: NOR gate
7495d-7540 Circuit element: inverter
7495d-7541 Circuit element: direct current power source (e.g. battery)
7495d-7542 Circuit element: direct current power source (battery) MULTIPLICITY
7495d-7543 Circuit element: operational amplifier
7495d-7544 Circuit element: differential amplifier
7495d-7545 Circuit element: comparator
7495d-7546 Circuit element: timer
7495d-7547 Circuit element: clock
7495d-7548 Circuit element: counter
7495d-7549 Circuit element: fiber optic
7495d-7550 Circuit element: photocoupler
7495d-7551 Circuit element: potentiometer
7495d-7552 Circuit element: ring counter
7495d-7553 Circuit element: ROM (read only memory)
7495d-7554 Circuit element: programmable Integrated Circuit (IC)
7495d-7555 Circuit element: cable
7495d-7556 Circuit element: coaxial cable
7495d-7557 Circuit element: cable made of flat braids
7495d-7558 Circuit element: low inductance cable
7495d-7559 Circuit element: relay
7495d-7560 Circuit element: bandpass filter
7495d-7561 Circuit element: low pass filter
7495d-7562 Circuit element: high pass filter
7495d-7563 subcircuit: voltage divider (eg two resistors in series)
7495d-7564 subcircuit: resistor bridge
7495d-7565 subcircuit: rectifier
7495d-7566 subcircuit; diodes in ac to dc rectifier or bridge arrangement
7495d-7567 subcircuit: diodes in half wave rectifier configuration
7495d-7568 subcircuit: diode in parallel with switch (shunting)
7495d-7569 subcircuit: resistor in parallel with switch (shunting)
7495d-7570 subcircuit: transistor plus resistor in parallel with gap (shunting)
7495d-7571 subcircuit: reference voltage
7495d-7572 subcircuit:: adjustable reference voltage
7495d-7573 subcircuit: inductor in parallel with variable resistor
7495d-7574 Subcircuit: diode in parallel with resistor
7495d-7575 subcircuit: (diode and battery in series) in parallel with machining gap
7495d-7576 subcircuit: (diode and resistor in series) in parallel with machining gap
7495d-7577 subcircuit: only switch in parallel with machining gap
7495d-7578 Subcircuit: only transistor in parallel with machining gap
7495d-7579 subcircuit: only diode in parallel with gap
7495d-7580 subcircuit: only resistor in parallel with machining gap
7495d-7581 subcircuit: only potentiometer in parallel with machining gap
7495d-7582 subcircuit: only capacitor and inductor in series in parallel with machining gap
7495d-7583 subcircuit: only capacitor and resistor in series in parallel with machining gap
7495d-7584 subcircuit: only capacitor in parallel with machining gap
7495d-7585 subcircuit: only inductor and resistor in series in parallel with machining gap
7495d-7586 subcircuit: inductor in series with capacitor
7495d-7587 subcircuit: resistor in series with capacitor
7495d-7588 subcircuit: booster shunt circuit
7495d-7589 Power Supply: switches in parallel
7495d-7590 Power Supply: transistors in parallel
7495d-7591 Power Supply: capacitors in parallel
7495d-7592 Power Supply: snubber circuit
7495d-7593 Power Supply: with LC (inductor-capacitor) resonance network
7495d-7594 Power Supply: with RC (resistance-capacitor) network
7495d-7595 Power Supply: with diode in flywheel or flyback arrangement
7495d-7596 Power Supply: including sample and hold circuit
7378b-7598 Auxiliary EDM Power Supply Functions Beyond Basic Provision of an Electrical Discharge
7598b-7599 EDM Pulse ignition
7599d-7600 Power Supply: using high voltage to initiate discharge followed by low voltage
7599d-7601 Power Supply: ignition voltage circuit (e.g. using second battery for noload voltage)
7599d-7602 Power Supply: with ignition volatge circuit applying pulses of either polarity
7599d-7603 Power Supply: with ignition voltage source sending power to main circuit for reuse
7378b-7606 Overall Purpose(s) of EDM Power Supply
7606d-7607 Pulse circuit: for rough and finish machining
7606d-7608 Wire Cutting: Controls Width of Cut by pulse(freq,duty cycle, I ampl.)
7606d-7609 Power Supply: with impedance matching
7606d-7610 Power Supply: reusing unused energy from previous machining pulse
7606d-7611 Power Supply: reusing energy from floating inductance in circuit or line
7606d-7612 Power Supply: creating short circuit during off-time to prevent stray currents
7606d-7613 Power Supply: applying current between machining pulses to eliminate detritus
7606d-7614 Power Supply with subcircuit to protect circuit from short circuits
7606d-7615 Power Supply: using electrode negative , workpiece positive for finish machining
7606d-7616 Pulse Circuit: with shunt to clip off peak portion of discharge current
7606d-7617 Pulse Circuit: adjusting off-time between machining pulses
7606d-7618 Pulse Circuit: adjusting off-time between two pulse trains
7606d-7619 Power Supply: preventing stray capacitance from being charged
7378b-7621 Specialized EDM Power Supplies
7314b-7624 EDM dielectric Supply
7624b-7625 EDM Dielectric Composition
7625d-7626 completely unspecified dielectric liquid
7625d-7627 unspecified hydrocarbon fluid
7625d-7628 dielectric fluid containing carbon
7625d-7629 dielectric fluid containing surfactant
7625d-7630 kerosene
7625d-7631 oil
7625d-7632 parrafin
7625d-7633 emulsion (of oil or kerosene) containing droplets of water or electrolyte
7625d-7634 silicone oil
7625d-7635 aqueous
7625d-7636 water
7625d-7637 deionized water or distilled water or pure water
7625d-7638 water: specific resistance between 10( to 3rd power) to 10 ( to 5th power) ohm-cm
7625d-7639 deionized aqueous liquid
7625d-7640 glycol or glycerin in water
7625d-7641 low viscosity ester fluid from branched acids and branched alcohols
7625d-7642 dielectric fluid contaning particles of unknown or miscellaneous type
7625d-7643 dielectric fluid containing electrical insulating particles
7625d-7644 dielectric fluid containing metallic or submetallic powder or conductive grains
7625d-7645 Dielectric fluid (e.g. water) containing silicon particles
7625d-7646 dielectric fluid is a gas dissolved into a liquid
7625d-7647 dielectric fluid is an unspecified type of gas/liquid mixture
7625d-7648 dielectric fluid is water vapor or steam or spray or vapors
7625d-7649 unspecified dielectric gaseous medium
7625d-7650 dielectric gas: air
7625d-7651 dielectric gas: unspecified inert gas
7625d-7652 dielectric gas: argon gas
7625d-7653 dielectric gas: nitrogen
7625d-7654 dielectric gas: unspecified ozidizing gas
7624b-7656 EDM Dielectric Fluid Feed System
7656d-7657 Nozzle angled toward machining gap
7656d-7658 Nozzles located at periphery of workpiece
7656d-7659 Nozzle: multiplicity
7656d-7660 hose feeding air into dielectric fluid to agitate or stir dielectric fluid
7656d-7661 using an exciter to vibrate working fluid to stir particles in dielectric fluid
7656d-7662 using rotating electrode guide to stir dielectric fluid
7656d-7663 fluid passing from work tank to filter to storage tank
7656d-7664 manifold for delivering fluid to electrode(s)
7656d-7665 dielctric fluid or medium being removed from gap by passageway in electrode
7656d-7666 valve: miscellaneous or unspecified
7656d-7667 valve: solenoid
7656d-7668 valve: two way
7656d-7669 valve: three way direction valve
7656d-7670 valve: pressure relief valve
7656d-7671 valve: multiplicity
7656d-7672 fluid filter
7656d-7673 ion exchanger or ion exchange resin
7656d-7674 heat exchanger
7656d-7675 fluid cooler
7656d-7676 pump
7656d-7677 fluid flow preventing thermal deformation of frame or column or apparatus
7656d-7678 dielectric flow is controlled by feedback control
7656d-7679 dielectric fluid flow rate controlled
7656d-7680 amount of powder in dielectric fluid is controlled by feedback control
7656d-7681 Wire Cutting: Fluid supply valve as F(workpiece thickness)
7314b-7684 EDM Tank Features
7684d-7685 Tank made of stacked annular elements
7684d-7686 Tank: having brush to remove adhering sludge from working electrode
7684d-7687 Tank: underside of workpiece is exposed to a fluid under pressure
7684d-7688 Tank: workpiece surface forms floor of tank
7684d-7689 Tank: movable to position preventing collision with upper wire guide
7684d-7690 Tank: with mirror
7684d-7691 Tank: with sensor
7684d-7692 Tank: with float switch to determine if enough fluid is present for machining
7684d-7693 Tank: with electrode holder
7684d-7694 Tank: with magazine for holding electrodes
7684d-7695 Tank: with support for nozzle(s)
7684d-7696 Tank: with opening in side wall for electrode to pass through for machining
7684d-7697 Tank: associated means to produce laminar air flow over machining liquid in tank
7684d-7698 Tank with Seal Structure for Lower Arm in Wire EDM machine
7684d-7699 Tank: with sealing means in bottom of tank to permit wire passage
7684d-7700 Tank: with associated movable pipe to control fluid level in tank
7684d-7701 Tank: with lower arm and lower wire guide outside of tank
7684d-7702 Tank: with lower wire guide inside tank
7684d-7703 Tank: containing pallet
7684d-7704 Tank: containing pedestal for supporting workpiece
7684d-7705 Tank: containing workholder
7684d-7706 Tank: containing table
7684d-7707 Tank: containing table that is secured through tank wall by bolts to base
7684d-7708 Tank: containing two tables each with their own workpiece
7684d-7709 Tank: containing a table supporting multiple workpieces
7684d-7710 Tank: containing rotary index table with bellows
7684d-7711 Tank: containing a work holder
7684d-7712 Tank: with cover
7684d-7713 Tank: with cover having a ventilator for changing internal air
7684d-7714 Tank: with cover preventing accidental electrical shock
7684d-7715 Tank: with detachable or movable sides or door
7684d-7716 Tank: supported by base
7684d-7717 Tank: electrically insulated from base by insulation pad
7684d-7718 Tank: supported by table
7684d-7719 Tank: secured and supported to a table by bolts
7684d-7720 Tank: movable in Z-direction
7684d-7721 Tank: movable in X,Y directions
7684d-7722 Tank: with integral column
7684d-7723 Tank: with valve in bottom floor to remove fluid from tank as desired
7684d-7724 Tank: with power supply (i.e. printed circuit board) attached to exterior wall
7684d-7725 Tank: with unspecified features
7684d-7726 Tank: miscellaneous
7684d-7727 Tank: multiplicity
7314b-7729 EDM electrode system
7729b-7730 Non-Wire EDM Electrode
7730b-7731 Composition for EDM Electrode (non-wire)
7731d-7732 wire electrode with Cu core and Zn coating with gamma or epsilon phase
7731d-7733 EDM electrode with graphite matrix and intercalated powders
7731d-7734 Electrode Composition: zirconium diboride/copper composite electrode
7731d-7735 Electrode Composition: aluminum
7731d-7736 Electrode Composition: made of carbon
7731d-7737 Electrode Composition: made of carbon nanotubes
7731d-7738 Electrode Composition: Graphite
7731d-7739 Electrode Composition: Graphite Copper alloy
7731d-7740 Electrode Composition: Copper
7731d-7741 Electrode Composition: Copper alloy
7731d-7742 Electrode Composition: Brass
7731d-7743 Electrode Composition: Zinc
7731d-7744 Electrode Composition: Zinc Alloy
7731d-7745 Electrode Composition: Tin
7731d-7746 Electrode Composition: Tin Alloy
7731d-7747 Electrode Composition: semiconductor
7731d-7748 Electrode Composition: silicon
7731d-7749 Electrode Composition: germanium
7731d-7750 Electrode Composition: Tungsten
7731d-7751 Electrode Composition: silver tungsten
7731d-7752 Electrode Composition: Tungsten copper
7731d-7753 Electrode Composition: Tungsten Carbide
7731d-7754 Electrode Composition: Thoriated Tungsten
7731d-7755 Electrode Composition: sintered electrode
7731d-7756 Electrode Composition: diamond with impurities
7731d-7757 Electrode Composition: sintered Tungsten body
7731d-7758 Electrode Composition: sintered Tungsten-Silver body
7731d-7759 Electrode Composition: sintered Tungsten-Copper body
7731d-7760 Electrode Composition: sintered Tungsten-Carbon body
7731d-7761 Electrode Composition: sintered Molybdenum-Silver body
7731d-7762 Electrode Composition: sintered Molybdenum-Copper body
7731d-7763 Electrode Composition: Titanium
7731d-7764 Electrode Composition: sintered Titanium Carbide
7731d-7765 Electrode Composition: cemented carbide
7731d-7766 Electrode Composition: sintered Titanium Nickel
7731d-7767 Electrode Composition additive: thorium oxide
7731d-7768 Electrode Composition additive: zirconium oxide
7731d-7769 Electrode Composition: green compact electrode made of reforming material
7730b-7771 Geometrical Features of EDM Electrode (non-wire)
7771d-7772 Electrode shape: rack
7771d-7773 Electrode shape : Rod shaped with an outer spiral shaped groove
7771d-7774 Electrode shape: screw
7771d-7775 Electrode shape: conductive pipe
7771d-7776 Electrode shape: with a shape corresponding to a single cell of a honeycomb
7771d-7777 Electrode: pivotably movable
7771d-7778 Electrode: with eccentric flushing bore
7771d-7779 Electrode shape: conical shape
7771d-7780 Electrode shape: tapered
7771d-7781 Electrode shape: needle
7771d-7782 Electrode shape: like a comb
7771d-7783 Electrode shape: like a brush made of metal wires or thin metal pipes
7771d-7784 Electrode: with a cylindrical shaft shape electrode
7771d-7785 Electrode shape: cylindrical or tube or pipe or roll
7771d-7786 Electrode shape: like a bar or rod
7771d-7787 Electrode shape: concentric portions different in diameter having discrete steps
7771d-7788 Electrode: with concentric annular passages
7771d-7789 Electrode: with threaded surface area for connection to shank or electrode holder
7771d-7790 Electrode: with integral shank part
7771d-7791 Electrode: with shank having a location pin
7771d-7792 Electrode: with reverse image shape to desired final shape of workpiece
7771d-7793 Electrode: U-shaped to scoop up machining chips
7771d-7794 Electrode: shaped like a round saw blade
7771d-7795 Electrode shape: pin
7771d-7796 Electrode shape: small diameter rod
7771d-7797 Electrode shape: wheel or disk or disc
7771d-7798 Electrode shape: gear wheel
7771d-7799 Electrode shape: rectangular or parallelpiped
7771d-7800 Electrode shape: with triangular cross section
7771d-7801 Electrode Composition: outer layer of low electrical resistance
7771d-7802 Electrode Composition: outer layer of silicon or germanium
7771d-7803 Electrode Composition: outer layer of ions to prevent electrode consumption
7771d-7804 Electrode Composition: outer layer of molecules prevents electrode consumption
7771d-7805 Electrode Composition: outer layer of dielctric or non-conductive material
7771d-7806 Electrode Composition: inner core has material with high electrical resistatnce
7771d-7807 ELectrode Composition: electrically insulating ceramic
7771d-7808 Electrode: made of multiple segments that physically touch each other
7771d-7809 Multiple electrodes: separated by dielectric layer or insulation
7771d-7810 Multiple electrodes: with conductive materials between the electrodes
7771d-7811 Multiple electrodes: seperated from each other by a physical space or gap
7771d-7812 Multiple electrodes: rods that have lengths for reverse image to final work shape
7771d-7813 Multiple electrodes: wires or linear electrodes
7771d-7814 Multiple electrodes: miscellaneous
7771d-7815 Electrode: made of alternating conductive and nonconductive discs
7771d-7816 Electrode: including means to heat electrode during machining
7771d-7817 Electrode: with machining fluid passageway
7771d-7818 Electrode: with multiple machining fluid passageways
7771d-7819 Electrode: made of porous material for fluid passageways
7771d-7820 Electrode: with conductive pipes embedded into electrode
7771d-7821 Electrode: with replaceable tip
7771d-7822 Electrode: with temperature control
7771d-7823 Electrode shape: with alphanumeric symbol(s) for engraving
7730b-7825 Electrode Guide for a non-wire EDM Electrode
7825d-7826 miscellaneous details of electrode guide (non-wire)
7825d-7827 regular electrode guide with fluid passageway
7825d-7828 regular electrode guide exchanger
7825d-7829 regular electrode guide multiplicity
7730b-7831 Electrode Holder for a non-wire EDM Electrode
7831d-7832 electrode holder: electrically insulated from piston rod of hydraulic servo system
7831d-7833 electrode holder: with spindle and collet chuck assembly
7831d-7834 electrode holder: using chuck
7831d-7835 electrode holder: with screw coupling part (thread) for connection to machine
7831d-7836 electrode holder: chuck having a cone insert to hold electrodes of various sizes
7831d-7837 electrode holder: with collet
7831d-7838 electrode holder: with electromechanical transducer inside electrode holder
7831d-7839 electrode holder: with rotary index device
7831d-7840 electrode holder: with jig to increase electrode movement
7831d-7841 electrode holder: mounted in a tank
7831d-7842 electrode holder: mounted outside tank so that electrode passes through tank wall
7831d-7843 electrode holder: mounted on the end of a quill or ram
7831d-7844 electrode holder: with controlled radial displacement of the electrode
7831d-7845 electrode holder: for holding electrode in controlled tilting or attitude position
7831d-7846 Electrode holder: universal
7831d-7847 Electrode holder: with clamp device or slot
7831d-7848 Electrode holder: with indexing device for alignment
7831d-7849 Electrode holder: holding multiple electrodes selected by rotating electrode holder
7831d-7850 Electrode holder: carousel for holding electrodes
7831d-7851 Electrode holder: magazine
7831d-7852 Electrode holder: turret
7831d-7853 Electrode holder: electrodes mounted on arms attached to endless chains
7831d-7854 Electrode holder: with electrode exchange device
7831d-7855 Electrode holder: with dovetail for quick changing of electrodes
7831d-7856 Electrode holder: with usage data encoded on holder
7831d-7857 Electrode holder: with shank
7831d-7858 Electrode holder: with ceramic electrical insulation plate
7831d-7859 Electrode holder composition: copper
7831d-7860 Electrode holder: movable in X,Y,Z dimensions
7831d-7861 Electrode holder: with contact sensor to postion electrode re workpiece
7831d-7862 Electrode holder: miscellaneous
7831d-7863 Electrode holder: multiplicity of spindles
7831d-7864 Electrode Holder: multiplicity
7831d-7865 Electrode holder: multiplicity electrically isolated from one another
7730b-7867 Current Supply Arrangement for EDM Electrode (non-wire)
7867d-7868 Current feeder supplies energy by induction to regular electrode
7867d-7869 Current feeder supplies energy via electrode holder to regular electrode
7867d-7870 Current feeder or contact directly supplies energy to regular electode
7867d-7871 supplying current using a brush
7867d-7872 supplying current using a brush made of a copper alloy
7867d-7873 supplying current using a brush made of a silver alloy
7867d-7874 supplying current using a brush made of carbon
7867d-7875 supply current: using biased bushes and a slip ring
7867d-7876 supply current: miscellaneous or unspecified
7867d-7877 Current feeder to regular electrode: MULTIPLICITY
7730b-7879 Auxiliary Features Associated with non-wire EDM Electrodes
7879b-7880 EDM Electrode Dressing or Redressing
7880d-7881 electrode shaping by electrosrosion
7880d-7882 electrode shaping by electroerosion using a wire electrode
7880d-7883 electrode shaping by mechanical means
7880d-7884 electrode shaping by a grinding tool(s)
7880d-7885 electrode shaping by a cutting or milling machine
7880d-7886 electrode shaping by laser cutting or ablation
7729b-7890 Wire EDM Electrode
7890d-7891 Wire electrode: multiplicity
7890d-7892 Wire Cutting: multiplicity of wire cutting discharge machines or workstations
7890b-7893 Wire EDM Electrode Composition
7893d-7894 Wire electrode composition
7893d-7895 Wire electrode: made of graphite material
7893d-7896 WIre electrode: with outer layer made of Cu-Zn (brass) alloy
7893d-7897 Wire electrode: brass
7893d-7898 Wire electrode: composed solely of copper
7893d-7899 wire electrode: made completely of Iron (Fe)
7893d-7900 Wire electrode composition of brass (Cu,Zn) and silicon
7893d-7901 Wire electrode compostion: tungsten
7893d-7902 Wire electrode compostion: molybdenum
7893d-7903 WIre electrode compostion: titanium or titanium alloy
7893d-7904 Wire electrode composition: platinum or platinum alloy
7893d-7905 Wire electrode composition: shape memory alloy
7893d-7906 Wire electrode: made of 3 or more composite layers
7893d-7907 Wire electrode: with core made of copper,silver, aluminum or their alloys
7893d-7908 Wire electrode: with outermost layer made of unspecified metal
7893d-7909 Wire electrode: with outermost layer made of alloy with a low melting point
7893d-7910 Wire electrode: with outermost layer made of zinc coating
7893d-7911 Wire electrode: with outermost layer made of Cu-Zn alloy ( e.g. brass)
7893d-7912 Wire electrode: with steel core
7893d-7913 Wire electrode: brass core with zinc coating
7893d-7914 Wire electrode: with core made of a copper alloy containing silver (Ag)
7893d-7915 Wire electrode: with outer layer having bonded sintered hard particles
7893d-7916 Wire Electrode: with non-conductive abrasive grains
7893d-7917 Wire electrode: with outer layer made of magnetic powder
7893d-7918 wire composition is unspecified
7890b-7920 Wire EDM Electrode Geometrical Features
7920d-7921 irregular wire electrode shape
7920d-7922 wire electrode diameter specified
7920d-7923 wire electrode diameter: less than 50 microns (.05 mm)
7920d-7924 wire electrode diameter: 50 microns (.05 mm) to 100 microns (.1mm)
7920d-7925 wire electrode diameter: 100 microns (.1mm) to 200 microns (.2 mm)
7920d-7926 wire electrode diameter: 200 microns (.2mm) to 400 microns (.4mm)
7920d-7927 wire electrode diameter: 400 microns (.4mm) to 600 microns (.6 mm)
7920d-7928 wire electrode diameter: 600 microns (.6mm) to 800 microns (.8mm)
7920d-7929 wire electrode diameter: 800 microns (.8mm) tp 1000 microns ( 1 mm)
7920d-7930 wire electrode diameter: 1.00 mm to 2.0 mm
7920d-7931 wire electrode diameter: 2.00mm to 3.00mm
7920d-7932 wire electrode diameter: 3.00 mm to 4.00 mm
7920d-7933 wire electrode diameter: 4.00 mm to 5.00 mm
7890b-7935 Wire Supply or Reel, Associated Structures
7935d-7936 wire supply reel or bobbin
7935d-7937 wire supply reel or bobbin multiplicity
7935d-7938 wire take up reel or take up bobbin
7935d-7939 wire take up reel or take up bobbin multiplicity
7935d-7940 wire supply and used wire disposal on same side of workpiece
7935d-7941 rotation brake in association with bobbin
7935d-7942 disc brake
7935d-7943 torque brake
7935d-7944 electromagnetic powder brake
7890b-7946 Guide for Wire EDM Electrode
7946d-7947 wire guide
7946d-7948 wire guide that is rotatable
7946d-7949 wire guide: size that is adjustable
7946d-7950 wire guide: that is adjustable in size for wire insertion
7946d-7951 wire guide changer for wire of differing diameter
7946d-7952 wire guide: that provides backing support over an extended distance
7946d-7953 wire guide: with helical grooves
7946d-7954 wire guide system for machining strange shapes or small areas
7946d-7955 wire guide that is die shaped
7946d-7956 wire guide is an eccentric die
7946d-7957 wire guide in the shape of a torus
7946d-7958 wire guide: using spherical balls
7946d-7959 wire guide made of diamond
7946d-7960 wire guide made of ruby
7946d-7961 wire guide is made of ceramic
7946d-7962 wire guide is made of carbide
7946d-7963 wire guide has a three point support
7946d-7964 wire guide has four point support
7946d-7965 wire guide with a V-shape groove
7946d-7966 wire guide with a U-shaped groove
7946d-7967 wire guide using two interactive magnetic fields to guide wire electrode
7946d-7968 upper wire guide
7946d-7969 upper wire guide disclosed as movable in U-V plane
7946d-7970 upper wire guide disclosed as movable vertically along the Z-axis
7946d-7971 lower wire guide
7946d-7972 lower wire guide disclosed as movable in X-Y plane
7946d-7973 wire guide: multiplicity
7946d-7974 wire guide: selectively replaceable
7946d-7975 wire guide consisting of 3 ring like eccentrically mounted openings in succession
7946d-7976 wire guide made of C-rings
7946d-7977 wire guide consisting of ball like elements cooperating with each other
7946d-7978 tube for guiding wire from work zone or lower wire guide
7890b-7980 Nozzle for EDM Wire Electrode
7980d-7981 nozzle touching workpiece
7980d-7982 nozzle able to support cut out part of workpiece (core)
7980d-7983 nozzle with supply of machining liquid or air to move part of nozzle
7980d-7984 nozzle designed for wire threading
7980d-7985 nozzle with axial movable jet nozzle
7980d-7986 nozzle with internal turbine-form blade
7980d-7987 nozzle with a wire electrode holding section
7980d-7988 nozzle with annular flow around wire electrode
7980d-7989 nozzle with multiple annular dielectric fluid flowing around wire electrode
7980d-7990 nozzle dividing fluid flow to pass through a plurality of holes in nozzle
7980d-7991 nozzle with adjustable diameter
7980d-7992 nozzle with low pressure fluid flow
7980d-7993 nozzle with high pressure fluid flow
7980d-7994 nozzle: spaced from wire to obliquely supply fluid at wire or gap
7980d-7995 nozzle: with associated motor to move nozzle
7980d-7996 upper nozzle: containing magnet or electromagnet
7980d-7997 lower nozzle: containing magnet
7980d-7998 upper nozzle: with attached curtain to restrain fluid
7980d-7999 upper nozzle
7980d-8000 lower nozzle
7980d-8001 nozzle: with sensor
7980d-8002 nozzle: with associated motor to move nozzle
7980d-8003 nozzle: selected according to desired diameter
7980d-8004 nozzle: miscellaneous
7890b-8006 Roller(s) for EDM Wire Electrode
8006d-8007 brake roller
8006d-8008 guide roller
8006d-8009 guide roller
8006d-8010 pressing roller
8006d-8011 tension roller
8006d-8012 roller with associated vibration absorbing mechanism
8006d-8013 roller with associated cutting elements
8006d-8014 capstan roller
8006d-8015 feed roller or drive roller
8006d-8016 pinch roller
8006d-8017 straightening roller
8006d-8018 pinch roller moved hydraulically or pneumatically
8006d-8019 roller made of a ceramic (e.g. silicon nitride)
8006d-8020 tension pulley
7890b-8022 Wire Drive System for EDM Wire Electrode
8022d-8023 electromagnetic powder clutch
8022d-8024 tension control DC motor
8022d-8025 torque motor
8022d-8026 conveyor for moving wire using fluid to advance wire
8022d-8027 Piezoelectric elements move workpiece in wire-edm machine
8022d-8028 Electrostriction elements in ring control wire electrode tension/speed
8022d-8029 piezoelectric elements feeding wire electrode
8022d-8030 fluid feeding wire electrode
8022d-8031 Wire Cutting: feed rate is controlled
7890b-8033 Current Feeder Elements for EDM Wire Electrode
8033d-8034 cylindrical current feeder
8033d-8035 current feeder: pin shape
8033d-8036 current feeder: bar shape
8033d-8037 current feeder: cylindrical shape
8033d-8038 current feeder: feeding bush
8033d-8039 rotatable current feeder element
8033d-8040 current feeder: roller
8033d-8041 current feeder: roller with groove
8033d-8042 current feeder with movement to expose new surface to wire
8033d-8043 current feeder element with low melting point alloy
8033d-8044 current feeder with cooling fluid
8033d-8045 current feeder using cooling fluid that is independent of machining fluid system
8033d-8046 current feeder with means to prevent wire breakage
8033d-8047 current feeder with coating of corrosion resistant metal to prevent rust, corrosion
8033d-8048 current feeder with hard contact surface made of TiC
8033d-8049 current feeder with hard contact surface made of WC
8033d-8050 current feeder with hard contact surface made of TaC
8033d-8051 current feeder with hard contact surface made of carbide
8033d-8052 current feeder with hard contact surface made of tungsten
8033d-8053 current feeder made of at least one sintered metal including Tungsten
8033d-8054 current feeder made of openable box
8033d-8055 current feeder: openable for wire threading or rethreading
8033d-8056 current feeder with conductive fluid
8033d-8057 current feeder with conductive fluid made of powders and grease base
8033d-8058 current feeder with conductive fluid made of electrolytic solution
8033d-8059 current feeder: with conductive fluid made of mercury
8033d-8060 current feeder: retracted or moved by pressurized fluid
8033d-8061 current feeder: retracted or moved by electromagnetic field
8033d-8062 current feeder located in lower arm
8033d-8063 current feeder: located in guide pipe
8033d-8064 current feeder: located between two die shaped wire guides
8033d-8065 current feeder: easily replaceable
8033d-8066 current feeder: using magnetic field to supply electric power to wire electrode
8033d-8067 current feeder: multiplicity
8033d-8068 miscellaneous current feeder
7314b-8072 Orientation, Movement, or Support of the EDM electrode system
8072b-8073 Non-Wire Electrode Orientation, Movement, or Support
8073b-8074 Broad Nature of EDM electrode (non-wire) Movement/Support/Orientation System
8074d-8075 RAM ( for movement of electrode; not computer memory)
8074d-8076 rack and pinion drive
8074d-8077 hydraulic movement or pneumatic movement
8074d-8078 motor
8074d-8079 pulse motor
8074d-8080 servo-motor
8074d-8081 stepping motor
8074d-8082 rotary servomotor
8074d-8083 linear servomotor
8074d-8084 linear motor
8074d-8085 pneumatic motor
8074d-8086 hydraulic motor
8074d-8087 electric motor
8074d-8088 spindle
8074d-8089 spindle that is cooled by air flow passing through spindle
8074d-8090 bearing
8074d-8091 slide
8074d-8092 servo valve
8074d-8093 piezoelectric actuator for moving electrode
8074d-8094 clutch
8074d-8095 slip clutch
8074d-8096 magnetic clutch
8074d-8097 piston
8074d-8098 gear
8074d-8099 bevel gear
8074d-8100 worm gear
8074d-8101 cam (mechanical element)
8074d-8102 normal and reverse rotating motor
8074d-8103 using robot to move electrode or electrode holder
8074d-8104 feeding electrode by using a belt and a motor
8074d-8105 feeding electrode using gears and a motor
8074d-8106 rotating electrode by using a belt and motor
8074d-8107 rotating electrode by using gears and a motor
8074d-8108 rotating electrode by using air motor or pneumatic motor
8074d-8109 rotating electrode using fluid flow
8074d-8110 rotating electrode using electromagnetic or magnetic field
8074d-8111 electrode is moved in a planetary (orbit) manner by a magnet and magnet coils
8074d-8112 spindle with associated clutch
8074d-8113 electrode on torch mounted on a gantry
8074d-8114 gantry with saddle device moving torch in single direction
8074d-8115 lead screw
8074d-8116 lead screw and anti-backlash nut
8074d-8117 Electrode bearing with V-shaped guide
8074d-8118 multiple independent machining heads
8074d-8119 Column (normal EDM)
8074d-8120 Column (normal EDM) with saddle
8073b-8122 Movement/Support/Orientation Executed by EDM electrode (non-wire)
8122d-8123 rotating electrode(s)
8122d-8124 two dimensional feed path of electrode to machine 3 dimensional shapes
8122d-8125 moving electrode in plane normal to the feed direction (i.e. orbiting)
8122d-8126 moving electrode along an orbital path without rotation about its own axis
8122d-8127 moving electrode in plane normal to feed direction by rocking or swinging
8122d-8128 moving electrode: in spiral path
8122d-8129 moving electrode by angular movement or rotation
8122d-8130 moving electrode along a polygonal orbit
8122d-8131 moving electrode with alternating planetary and Z-axis movements
8122d-8132 moving electrode in orbit with speed varying as a function of gap width
8122d-8133 moving electrode along Z-axis
8122d-8134 moving electrode in XYZ directions
8122b-8135 Vibration Digests
8135d-8136 vibration in a plane parallel to the workpiece
8135d-8137 vibration in electrode feed direction
8135d-8138 absorbing vibrations in electrode near workpiece
8135d-8139 vibrating workpiece or work holder or work table
8135d-8140 vibrating working fluid
8135d-8141 vibrations absorbed by workholder
8135d-8142 vibrations: miscellaneous
8073b-8145 Open Loop and Human Interface Aspects of EDM electrode (non-wire) Movement/Support/Orientation System
8073b-8147 Closed Loop Aspects of EDM electrode (non-wire) Movement/Support/Orientation
8073b-8149 Parameter controlled by Open/Closed Loop signal in EDM electrode (non-wire) Movement/Support/Orientation System
8149d-8150 specific path of electrode in response to abnormal condition (short circuit etc.)
8149d-8151 electrode in orbit: speed varied as a function of difference from reference path
8149d-8152 FAST OUT, SLOW IN electrode movement from gap
8149d-8153 High speed feed in response to open circuit
8149d-8154 High speed feed until first discharge occurs
8149d-8155 High speed retraction in response to short circuit
8149d-8156 relative retraction of electrode in response to short circuit
8149d-8157 relative retraction of electrode in response to abnormal discharge
8149d-8158 servo velocity controlled according to gap voltage changes
8149d-8159 feed system: for multiple electrodes
8149d-8160 feed system: multiple electrodes with machining gaps individually controlled
8149d-8161 control parameter: keeping gap distance equal to target value
8149d-8162 retraction path of electrode in event of a short circuit
8149d-8163 retraction path of electrode in the event of abnormal pulse
8149d-8164 controlling gap width between electrode and workpiece
8073b-8166 Housing Features for EDM electrode (non-wire) Movement/Support/Orientation System
8073b-8168 Multiplicities for EDM electrode (non-wire) Movement/Support/Orientation System
8073b-8170 Miscellaneous Facets for EDM electrode (non-wire) Movement/Support/Orientation System
8073b-8172 Auxiliary Features for EDM electrode (non-wire) Movement/Support/Orientation System
8073b-8174 Purpose of EDM electrode (non-wire) Movement/Support/Orientation System
8174d-8175 maintaining desired spacing (gap) between electrode and workpiece
8174d-8176 maintaining desired gaps between multiple electrodes and workpiece(s)
8174d-8177 compensating for electrode wear or reducing electrode wear
8174d-8178 intermittent electrode movement (jumps) for flushing gap
8073b-8180 Specialized EDM electrode (non-wire) Movement/Support/Orientation Systems
8072b-8183 Wire Electrode Orientation, Movement, or Support
8183b-8184 Broad Type of Movement/Support/Orientation System for EDM Wire Electrode Subsystem
8183b-8186 Broad Nature of the Movement/Support/Orientation of the EDM Wire Electrode
8186d-8187 wire cutting path: spiral path for wire electrode
8186d-8188 wire cutting path: arc path or arc segment for wire electrode
8186d-8189 wire cutting path: circular path for wire electrode
8186d-8190 wire cutting path: raster scanning path for wire electrode
8186d-8191 wire cutting path: shortest distance from starting hole to desired machining point
8186d-8192 wire cutting path: from starting hole in reverse direction to last machining point
8186d-8193 wire cutting path: preventing biting by changing path from start hole to machining point
8186d-8194 wire cutting path: adjusted according to wire electrode diameter
8186d-8195 wire cutting path: miscellaneous or unspecified
8186d-8196 Wire Cutting: Constant machining speed at path arc
8186d-8197 Wire Cutting: Adjusts gap between wire and work at corner of path
8186d-8198 Wire Cutting: keeps distance between nozzle and workpiece constant
8183b-8200 Open Loop and Human Interface Aspects of EDM Wire Electrode Movement
8200d-8201 Wire Cutting: with memory storing wire offset values for machining
8200d-8202 Wire Cutting: with wire offset data input to adjust machining path
8200d-8203 Wire Cutting: determination or calculation of gap offset
8200d-8204 Pulse circuit: for rough and finish machining
8200d-8205 Wire Cutting: Machinin Conditions according to workpiece thickness
8200d-8206 Wire Cutting: machining conditions according to the wire diameter
8200d-8207 Wire Cutting: machining conditions according to material of wire electrode
8200d-8208 Wire Cutting: adjusting machining conditions according to wire quality
8200d-8209 Wire Cutting: machining conditions according to machined surface roughness
8200d-8210 Wire Cutting: machining conditions according to work material
8200d-8211 Wire Cutting: Taper angle correction based upon wire electrode diameter
8200d-8212 WIre Cutting: taper machining with tilt direction calculation
8183b-8214 Closed Loop Aspects of EDM Wire Electrode Movement
8214d-8215 Wire Cutting:Control mach. speed depending on Changes in volt., current
8214d-8216 Wire Cutting: measures desired gap offset
8214d-8217 Wire Cutting: moves wire electrode to determine gap with workpiece
8183b-8219 EDM Wire Electrode Parameter controlled by Open/Closed Loop Signal
8219d-8220 relative feed rate of wire electrode to workpiece is controlled by feedback
8219d-8221 wire EDM machine with apparatus for vertically adjusting lower wire guide
8219b-8222 Wire Cutting Tension is set or adjusted in EDM
8222d-8223 Wire Cutting: Determines speed of work feed
8222d-8224 Wire Cutting:Tension Control Apparatus with CLUTCH
8222d-8225 Wire Cutting: Tension Adjusted for amount of wire on wire reel
8222d-8226 Wire Cutting: Tension Apparatus on both sides of the workpiece
8222d-8227 Wire Cutting: tension apparatus downstream of workpiece
8222d-8228 Wire Cutting: tension apparatus upstream of workpiece
8222d-8229 Wire Cutting: wire tension fluctuations absorbing mechanism
8222d-8230 Wire Cutting: tension kept constant
8222d-8231 Wire Cutting: tension adjusted to a value to prevent wire breakage
8222d-8232 setting wire tension by current according to hysteresis charact. of solenoid brake
8183b-8235 Housing Features for the EDM Wire Electrode System
8235d-8236 bed with plain bearings supporting column to prevent vibrations in wire electrode
8235d-8237 bed made of copper or brass material
8235d-8238 Column structure for wire EDM machine
8235d-8239 Column structure for wire EDM machine with movable upper section
8235d-8240 Column: with apparatus for moving upper wire guide
8235d-8241 Column: with bellows used to protect apparatus for moving upper wire guide
8235d-8242 Column for wire EDM machine connected to base by bolts
8235d-8243 Column for wire EDM machine supports lower supporting arm
8235d-8244 Column for wire EDM machine mounted on X-Y table
8235d-8245 Column for wire EDM machine moving in a single (e.g. X) direction
8235d-8246 Column: with heat exchanger to remove heat from column
8235d-8247 wire EDM machine with gantry
8235d-8248 wire EDM machine with faraday cage
8183b-8250 EDM Wire Electrode Movement/Support/Orientation Multiplicities
8183b-8252 Miscellaneous EDM Wire Electrode Movement/Support/Orientaion Facets
8183b-8254 Auxiliary EDM Wire Electrode Movement/Support/Orientation Features
8254d-8255 Wire Cutting: wire electrode is heated by joule effect (current)
8254d-8256 Wire Cutting: using a tool to form initial or start hole in workpiece
8254d-8257 Wire cutting: using pipe electrode to form initialor start hole in workpiece
8254d-8258 Wire cutting: using wire electrode to form inital or start hole in workpiece
8254d-8259 Wire Threading or Rethreading through hole or slit in workpiece
8254d-8260 Wire threading using suction to thread wire electrode
8254d-8261 Wire threading using positive fluid flow to thread wire electrode
8254d-8262 Feeding wire through hole (or slot) in work using fluid
8254d-8263 Wire threading: using pipe that guides the wire electrode
8254d-8264 Wire threading: using vibrating pipe to guide the wire electrode
8254d-8265 Wire threading: including annealing the wire electrode
8254d-8266 Wire threading: including heating the wire to elongate and reduce wire diameter
8254d-8267 Wire threading: including heating the wire to straighten the wire
8254d-8268 Wire threading: including heating the wire by electric current
8254d-8269 Wire threading: including cutting the wire electrode
8254d-8270 wire threading: including straightening the wire by pulling on the wire
8254d-8271 wire threading: including moving the table underneath the upper nozzle
8254d-8272 conveyor for removing used wire from work zone area
8254d-8273 wire EDM: with wire electrode and grinding disc on swiveable head
8254d-8274 Apparatus for collecting used wire
8254d-8275 Apparatus for flattening used wire
8254d-8276 Wire after machining zone is housed in a container
8254d-8277 Wire after machining zone is housed in a container supported by a turntable
8254d-8278 Apparatus(e.g. blade or cutting element) for cutting used wire
8254d-8279 wire is cut by knives
8254d-8280 Wire is cut by blade(s) moving at speed sync. with wire feed rate
8254d-8281 wire is cut by applyting tension force to wire electrode that has been partly melted
8254d-8282 Wire: is cut by electric current in a miscellaneous or unspecified position
8254d-8283 Wire after passing through machining zone is cut by electric current
8254d-8284 Wire before passing through machining zone is cut by electric current
8254d-8285 mutliplicity of receptacles or boxes for storing used wire or used wire fragments
8254d-8286 box for collecting used wire located directly beneath work area
8254d-8287 box for collecting used wire fragments
8254d-8288 Wire Cutting: while rotating wire electrode about its axis
8183b-8290 Purpose of EDM Wire Electrode Movement/Support/Orientation System
8183b-8292 Specialized EDM Wire Electrode Movement/Support/Orientation Systems
7314b-8296 Workpiece to which EDM is applied
8296b-8297 EDM Workpiece Composition Facets
8297d-8298 Workpiece: containing carbon
8297d-8299 workpiece: diamond
8297d-8300 Workpiece: glass
8297d-8301 workpiece: electric insulator
8297d-8302 workpiece: thermoplastic resin (e.g. foamed styrene)
8297d-8303 workpiece: electrically conductive plastic
8297d-8304 workpiece: final product: rotor
8297d-8305 Workpiece: unspecified type of ceramic
8297d-8306 Workpiece: cemented carbide
8297d-8307 Workpiece: silicon carbide
8297d-8308 Workpiece: aluminum oxide
8297d-8309 workpiece: polycrystalline diamond
8297d-8310 workpiece: diamond compact
8297d-8311 workpiece: diamond coating layer
8297d-8312 workpiece: diamond sintered alloy
8297d-8313 workpiece: aluminum nitride
8297d-8314 workpiece: cubic boron nitride (CBN) compact
8297d-8315 workpiece: conductive thin film on a substrate
8297d-8316 workpiece: sintered ceramic body
8297d-8317 Workpiece: semiconductor
8297d-8318 workpiece: silicon
8297d-8319 Workpiece: nitride semiconductor crystal
8297d-8320 workpiece: Mn-Zn ferrite
8297d-8321 Workpiece: electrically insulating ceramic
8297d-8322 Workpiece: electrically conductive ceramic
8297d-8323 Workpiece: semiconductive ceramic
8297d-8324 Workpiece:metal of unspecified type
8297d-8325 Workpiece: aluminum
8297d-8326 Workpiece: aluminum alloy
8297d-8327 Workpiece: ferrous (e.g. iron)
8297d-8328 Workpiece: steel
8297d-8329 Workpiece: stainless steel
8297d-8330 Workpiece: tungsten steel
8297d-8331 Workpiece: carbon steel
8297d-8332 Workpiece: brass
8297d-8333 Workpiece: grain oriented steel
8297d-8334 Workpiece: chromium alloy
8297d-8335 workpiece: nickel
8297d-8336 workpiece: nickel alloy
8297d-8337 Workpiece: cobalt alloy
8297d-8338 Workpiece: titanium
8297d-8339 Workpiece: titanium alloy
8297d-8340 Workpiece: lead alloy
8296b-8342 General Geometrical Features of the EDM Workpiece
8342d-8343 workpiece: completely unspecified
8342d-8344 workpiece: structure disclosed for connecting workpiece to power supply
8342d-8345 workpiece: metal base with outer layer of ceramic
8342d-8346 workpiece: metal base with outer layer of undoped ceramic
8342d-8347 workpiece: metallic with specified high resistance value
8342d-8348 workpiece: with weld
8342d-8349 workpiece shape: huge or very large
8342d-8350 workpiece shape: ingot
8342d-8351 workpiece shape: board
8342d-8352 workpiece shape: sheet or plate
8342d-8353 workpiece shape: pipe or tube
8342d-8354 Workpiece shape: rod or shaft or bar or solid cylindrical object
8342d-8355 Workpiece shape: plate or sheet or thin laminar body
8342d-8356 Workpiece shape: strip or web
8342d-8357 Workpiece shape: wire
8342d-8358 Workpiece shape: wafer
8342d-8359 workpiece shape: disc with a cental hole
8342d-8360 workpiece shape: wheel
8342d-8361 workpiece shape: hollow
8342d-8362 workpiece shape: uneven or non-flat
8342d-8363 Workpiece: laminated or multi layers
8342d-8364 workpiece: honeycomb shape
8296b-8366 Particular Product is subjected to EDM
8366d-8367 workpiece: bone implant prothesis
8366d-8368 workpiece: bone coupling material
8366d-8369 workpiece: dental implant prothesis (e.g. crown)
8366d-8370 workpiece: resistor
8366d-8371 workpiece: resistive pattern on printed circuit board
8366d-8372 workpiece: conductive pattern on printed circuit borad
8366d-8373 workpiece: printed circuit board (PCB)
8366d-8374 workpiece: probe or probes or probe array
8366d-8375 Workpiece: metallic interonnect tape
8366d-8376 workpiece: optical fiber ferrule
8366d-8377 workpiece: solar cell
8366d-8378 Workpiece: mask
8366d-8379 Workpiece: stencil mask
8366d-8380 workpiece: clutch
8366d-8381 workpiece: transmission torque converter reactor thrust washer
8366d-8382 workpiece: airfoil
8366d-8383 workpiece: steam pipe or nuclear reactor
8366d-8384 Workpiece: nuclear reactor equipment
8366d-8385 workpiece: gas turbine engine component
8366d-8386 workpiece: turbine blade or nozzle
8366d-8387 workpiece: turbine blade
8366d-8388 workpiece: turbine blade with ceramic coating or thermal barrier coating
8366d-8389 workpiece: vane
8366d-8390 workpiece: shroud for use in an aircraft engine
8366d-8391 workpiece: golf club
8366d-8392 workpiece: nozzle of unspecified type
8366d-8393 workpiece: tool
8366d-8394 workpiece: hob
8366d-8395 workpiece: tool with teeth for finish machining a gear
8366d-8396 workpiece: drill element or bit
8366d-8397 workpiece: cutting blade or cutter or knife blade
8366d-8398 workpiece: saw blade
8366d-8399 workpiece: cutting tool with threaded outer surface formed by thread rolling die
8366d-8400 Workpiece: grinding stone
8366d-8401 Workpiece: bearing
8366d-8402 Workpiece: implantable medical device (e.g. stent or catheter)
8366d-8403 Workpiece: orthopaedic prosthetic component
8366d-8404 Workpiece: gear
8366d-8405 Workpiece: gear blank
8366d-8406 workpiece: die
8366d-8407 workpiece: punch and die
8366d-8408 workpiece: extruding or extrusion dies
8366d-8409 workpiece: cylindrical rotary die
8366d-8410 workpiece: inner or interior surface of tube or pipe
8366d-8411 workpiece: outer or exterior surface of tube or pipe
8366d-8412 workpiece: roll
8366d-8413 workpiece: magnetic head
8366d-8414 workpiece: magnetic head slider or disc drive slider
8366d-8415 workpiece: mold
8366d-8416 workpiece: mold for golf club grip
8366d-8417 workpiece: mold for tire or tyre
8366d-8418 workpiece: brush seal
8366d-8419 workpiece: split rotary seal ring
8366d-8420 workpiece: ink jet printer nozzle or ink jet recording head
8366d-8421 workpiece: fuel injector nozzle
8366d-8422 workpiece: spinneret
8366d-8423 Workpiece: spinneret
8366d-8424 Workpiece: screw
8366d-8425 Workpiece: bolt thread or spiral thread
8366d-8426 Workpiece: gimbal suspension (i.e. ring) for a gimbal rotor
8366d-8427 Workpiece: wire guide
8366d-8428 Workpiece: electrode blank
8366d-8429 workpiece: cathode or anode of an electron gun
8366d-8430 workpiece: heat exchanger (e.g. with fins)
8366d-8431 Workpiece: workpiece with reference hole(s)
8366d-8432 wire cutting of a magnetic block to make magnetic head cores
8366d-8433 Removal of bad teeth from a gear by wire edm
8366d-8434 workpiece: identification tag (ID tag)
8296b-8436 EDM workpiece multiplicities
8436d-8437 workpiece: multiplicity
8436d-8438 workpiece: plurality machined simultaneously
7314b-8441 Movement, Support, or Orientation of the EDM workpiece
8441d-8442 electrical contact or current feeder details with workpiece
8441d-8443 Wire Cutting: control work feed so mean work voltage is constant
8441b-8444 Table for EDM
8444d-8445 table: miscellaneous or unspecified
8444d-8446 table with rotary or orbital movement
8444d-8447 table with gear connections to maintain parallelism
8444d-8448 table: inclinable or tiltable
8444d-8449 table: for wire cutting machining a taper cut
8444d-8450 table: driven by motor of unspecified or miscellaneous type
8444d-8451 table movable by pulse motor
8444d-8452 table moved by servo motor
8444d-8453 table moved by drive motor
8444d-8454 table moved by micrometer adjusting screw
8444d-8455 table with an electrode holding magazine
8444d-8456 table: holding or supporting electrode
8444d-8457 table: with opening to allow electrode to penetrate workpiece (breakthrough)
8444d-8458 table: above lower arm of wire cutting discharge machine
8444d-8459 X-Y table
8444d-8460 X-Y theta table
8444d-8461 X-Y-Z table
8444d-8462 table movable in either X or Y direction (not both)
8444d-8463 table: movable in Z direction (vertical)
8444d-8464 table supported on wheels to be moved along track or rails
8444d-8465 table : capable of holding a plurality of workpieces to be machined
8444d-8466 table: with associated fixture or holder to keep workpiece in desired position on table
8444d-8467 table: monitoring position and speed in the X-Y axes
8444d-8468 table: made of ferrous material (e.g. stainless steel or iron)
8444d-8469 table: made of granite
8444d-8470 table: with associated sensor
8444d-8471 controlling: feed rate of table movable in X/Y plane
8444d-8472 multiplicity of tables
8441b-8474 Introduction of Workpiece to EDM Work Zone Details
8474d-8475 Using robot or articulated hand to deliver workpiece
8474d-8476 Using conveyor to deliver workpiece
8441b-8478 Pallet Features
8478d-8479 Position Correction of work pallet for machine tool
8478d-8480 Arbitrary Pallet with coordinate system setting method
8478d-8481 Pallet in association with Liquid Suction Device
8478d-8482 Pallet: unspeccified or miscellaneous
8441b-8484 Workpiece Support
8484d-8485 Workpiece Support: miscellaneous or unspecified
8484d-8486 cantilever support of workpiece
8484d-8487 support of workpiece so that workpiece is not horizontal or vertical
8484d-8488 Workholder: supercentering
8484d-8489 Workholder: chuck
8484d-8490 Workholder: conductive vacuum chuck
8484d-8491 Workholder: magnetic chuck or electromagnetic chuck
8484d-8492 Workholder: clamp
8484d-8493 Workholder: electrically conductive clamp
8484d-8494 Workholder: fixture
8484d-8495 Workholder: tiltable
8484d-8496 Workholder: supported by slide that also supports electrode holder
8484d-8497 apparatus for rotating workpiece
8484d-8498 apparatus for moving workpiece in Z direction
8484d-8499 apparatus for vertically mounting workpiece
8484d-8500 jig
8484d-8501 jig: providing origin location
8484d-8502 jig: including electrical insulation
8484d-8503 Workpiece support : with magnet(s)
8484d-8504 Workpiece support: with suction or vacuum
8484d-8505 support of workpiece and part of workpiece being cut out
8484d-8506 Workpiece Support: with indicator
8484d-8507 Workpiece adhesively bonded to support to prevent movement during machining
8484d-8508 Workpiece: held by improved vise (or vice) having jaws
7314b-8511 EDM Process Feedback or Monitoring Hardware Details
8511b-8512 Sensor Hardware/Type for EDM
8512d-8513 stylus
8512d-8514 laser interferometer
8512d-8515 Light beam detection of perpendicularity of wire electrode
8512d-8516 temperature sensor
8512d-8517 Alignment of electrode to workpiece on a table by a microscope
8512d-8518 CONDUCTIVE MEASURING PROBE CONNECTED TO HEAD OF EDM MACHINE
8512d-8519 MACHINING DEPTH MEASURING DEVICE
8512d-8520 gap voltage detector
8512d-8521 monitoring: using monitoring (non-machining) pulse
8512d-8522 monitoring: using low power machining pulse as monitoring pulse
8512d-8523 Monitoring: electrode position by rotary encoder
8512d-8524 Monitoring shape of hole in workpiece by X-rays using tomography
8512d-8525 torque sensor
8512d-8526 rotation speed detector
8512d-8527 rotation angle detector
8512d-8528 optical sensor
8512d-8529 optical sensor: unspecified image pick up device or unspecified camera
8512d-8530 optical sensor: with additional illumination (light) device(s)
8512d-8531 video camera
8512d-8532 CCD camera
8512d-8533 3 dimensional digitizer sensor
8512d-8534 sound or acoustic sensor
8512d-8535 sound sensor: ultrasonic sensor
8512d-8536 position sensor: miscellaneous or unspecified
8512d-8537 position sensor: linear variable differential transducer (LVDT)
8512d-8538 sensor: senses the cessation of of rotary movement of spindle
8512d-8539 wire passage sensing means
8512d-8540 tachometer
8512d-8541 linear scale
8512d-8542 magnetic flux sensor
8512d-8543 voltage sensor or volt meter
8512d-8544 current sensor
8512d-8545 capacitance sensor
8512d-8546 electric contact sensor
8512d-8547 Sensor: vertical centering gage
8512d-8548 Sensor: contact detecting ring
8512d-8549 sensor: sensing resistor
8512d-8550 rotary encoder
8512d-8551 linear encoder
8512d-8552 Sensor: microswitch
8512d-8553 Sensor: electrically conductive probe
8512d-8554 Sensor: limit switch
8512d-8555 Sensor: fluid pressure sensor
8512d-8556 Sensor: fluid level sensor
8512d-8557 Sensor: monitors resistivity of fluid or liquid
8512d-8558 Sensor: float switch
8512d-8559 sensor: detecting wire disconnection
8512d-8560 sensor: detecting wire insertion or threading
8512d-8561 sensor: detects displacement of pulley or roller to determine wire tension
8512d-8562 sensor: microscope
8512d-8563 sensor: located opposite workpiece with respect to electrode
8512d-8564 sensor multiplicity
8511b-8566 Type of Output Signal from EDM Monitoring
8566b-8567 Gap Conditon or Parameter Signals, independent of any discharge considerations
8567d-8568 Monitoring for gap open circuit
8567d-8569 Monitoring for gap short circuit
8567d-8570 Monitoring: interelectrode gap voltage
8567d-8571 Monitoring: no-load voltage at gap (before discharge)
8567d-8572 Monitoring: no-load time
8567d-8573 Monitoring: average no load (triggering) time
8567d-8574 Monitoring: gap impedance
8567d-8575 Monitoring: gap resistance
8567d-8576 Monitoring: level of capacitance in the gap
8567d-8577 Monitoring: contamination state in machining gap
8567d-8578 calculating: gap width from machining voltage and machining current
8567d-8579 calculating: gap width from the pulse voltage rise time
8567d-8580 calculating: gap width based upon average triggering delay of electric discharges
8567d-8581 calculating the machining area
8567d-8582 Wire Cutting: Detecting Angle of change of path arc
8567d-8583 Wire Cutting: Detecting radius of machining path arc
8567d-8584 Wire Cutting: Computes width of working groove
8566b-8586 Machining Discharge Parameter Signals
8586d-8587 monitoring for initial discharge
8586d-8588 monitoring: for start (or beginning) of electric discharge
8586d-8589 monitoring number of discharges (of unspecified type)
8586d-8590 monitoring number of satisfactory (normal) discharges
8586d-8591 monitoring: number of abnormal discharges
8586d-8592 monitoring: defective condition or abnormal pulse in machining gap
8586d-8593 monitoring: occurence of discharge
8586d-8594 monitoring: rate of occurence of abnormal discharges
8586d-8595 monitoring: rate of occurence of normal discharges
8586d-8596 Monitoring High Frequency element of Discharge for Arcing, Noise etc.
8586d-8597 Monitoring: no discharge
8586d-8598 Monitoring: continuous arc discharge
8586d-8599 Monitoring: normal electric discharge
8586d-8600 Monitoring: for abnormal current flow through gap
8586d-8601 Monitoring: frequency of short circuits
8586d-8602 Monitoring: frequency of normal short circuits
8586d-8603 Monitoring: gap voltage to determine the presence of arcing
8586d-8604 Monitoring: average or mean gap voltage
8586d-8605 Monitoring: peak discharge gap voltage
8586d-8606 Monitoring: rise time of pulse voltage applied to machining gap
8586d-8607 Monitoring: gap current
8586d-8608 Monitoring: peak value of machining current
8586d-8609 Monitoring: mean gap current
8586d-8610 Monitoring: rate of change of current (delta) over time during discharge
8586d-8611 Monitoring: concentration of electrical discharges
8586d-8612 Monitoring: positions of electric discharges at predetermined time intervals
8586d-8613 calculating average rate of discharges without delay time
8586d-8614 Comparing Gap Voltage waveform to stored memory using A/D and Fourier Tr.
8586d-8615 monitoring inductance fall component
8586d-8616 monitoring: resistance fall component
8586d-8617 calculating average no load or average delay time
8566b-8619 System Hardware/Circuitry Parameter Signals
8619d-8620 Monitoring: leakage or leaking current
8619d-8621 Monitoring: charging current of capacitor
8619d-8622 Monitoring: discharge current
8619d-8623 Monitoring: discharge current time
8619d-8624 Monitoring: level of charge present in capacitor
8619d-8625 Monitoring: detecting completion of discharge of a capacitor
8619d-8626 monitoring: machining conditions or (classified) machining state
8619d-8627 Monitoring: detecting suspension of discharges during machining operation
8619d-8628 calculating the processing finish time
8619d-8629 Calculating the thermal deformation of the frame or machine
8619d-8630 Wire Cutting: with computer monitoring life of expendable components
8566b-8632 Fluid and Fluid System Parameter Signals
8632d-8633 Monitoring: resistance level of dielectric fluid
8632d-8634 Monitoring: the PH level (acidity or baseness) of the dielectric fluid
8632d-8635 Monitoring: concentration of contaminants in machining fluid
8632d-8636 Monitoring fluid pressure in nozzle
8632d-8637 Monitoring: fluid pressure in supply line to nozzle
8632d-8638 Monitoring fluid pressure in tank or near workpiece
8632d-8639 Monitoring fluid pressure in supply line to electrode
8632d-8640 Monitoring: liquid level of dielectric fluid in machining tank
8632d-8641 Monitoring: liquid level of working fluid in storage tank
8632d-8642 Monitoring: storage tank overflowing machining fluid (liquid)
8566b-8644 Electrode Parameter Signals (physical, mechanical, non-electrical discharge)
8644d-8645 Monitoring: interelectrode gap distance
8644d-8646 Monitoring: length or diameter or dimensions of tool (electrode)
8644d-8647 Monitoring: diameter of wire electrode
8644d-8648 Monitoring: elongation of wire electrode
8644d-8649 Monitoring: axial speed of wire electrode
8644d-8650 Monitoring: position of wire electrode in threading operation
8644d-8651 Monitoring: position of end of wire electrode
8644d-8652 Monitoring: electrode wear
8644d-8653 Laser Beam detection of Perpendicularity of wire electrode
8644d-8654 Laser Beam used to detect position of wire electrode
8644d-8655 Monitoring: vibration of a wire electrode
8644d-8656 Laser Beam detection of vibration of wire electrode
8644d-8657 Monitoring: passage of the wire electrode through the lower wire guide
8644d-8658 Monitoring: z-axis position of upper wire guide
8644d-8659 Monitoring: condition of used wire after machining zone
8644d-8660 Monitoring: wire tension downstream of the workpiece
8644d-8661 Monitoring: wire tension upstream of the workpiece
8644d-8662 Monitoring: wire electrode torsion
8644d-8663 Monitoring: wire electrode offset caused by changing wire electrodes
8644d-8664 Monitoring: electrode position by miscellaneous or unspecified method
8644d-8665 Monitoring: electrode position by linear scale
8644d-8666 Monitoring: verticality of non- wire type electrode
8644d-8667 Monitoring: detection of wire breakage or disconnection
8644d-8668 Monitoring: level of verticality of wire electrode
8644d-8669 Monitoring: magnetic flux density produced around a wire electrode
8644d-8670 Monitoring: wear of wire guide or die guide
8644d-8671 Monitoring: wear of current feeder to wire electrode
8644d-8672 determining: z-axis reference plane of electrode from position of initial discharge
8644d-8673 calculating: angular velocity of relatively orbiting electrode
8644d-8674 calculating: electrode consumption based on machining pulse conditions
8644d-8675 calculating: electrode consumption based on number of normal discharges
8644d-8676 calculating: the electrode position in XYZ coordinate (dimension) system
8644d-8677 Wire Cutting:calculating the remaining amount of wire electrode
8644d-8678 Wire Cutting: calculating the length of wire needed for the next process
8566b-8680 Workpiece Parameter Signals (physical, mechanical, non-electrical discharge)
8680d-8681 monitoring: contact of electrode tip with workpiece to determine workpiece position
8680d-8682 monitoring: determining whether cracking is occuring
8680d-8683 Monitoring: size of the workpiece
8680d-8684 Monitoring: height of workpiece on table
8680d-8685 Monitoring: shape of workpiece
8680d-8686 Monitoring: workpiece thickness
8680d-8687 Monitoring: surface roughness of workpiece
8680d-8688 Monitoring: presence of a burr on a workpiece
8680d-8689 monitoring: size or shape of master model
8680d-8690 Monitoring: position and inclination of starting hole for wire EDM
8680d-8691 Monitoring: through hole completion or electrode breakthrough
8680d-8692 Monitoring: width of a cutting groove in wire cutting
8680d-8693 Monitoring: electric discharge point on the electrode or workpiece
8680d-8694 Monitoring: distance from nozzle to workpiece in wire EDM
8680d-8695 Monitoring: collision or contact of nozzle or wire guide with workpiece
8680d-8696 Monitoring: travel deviation of a machining table
8680d-8697 calculating the machining area based on changes of the relative feed speed
8680d-8698 calculating the machining depth
8680d-8699 Wire Cutting: calculating workpiece thickness
8566b-8701 Temperature Signals in EDM environment
8701d-8702 Monitoring: temperature of air
8701d-8703 Monitoring: temperature of machining fluid
8701d-8704 Monitoring: temperature of device or frame or machine
8701d-8705 Monitoring: temperature of electrode(s) or electrode holder
8566b-8707 Human Readable, Perveivable Signals related to EDM
8707d-8708 display: unspecified or miscellaneous
8707d-8709 television or monitor or cathode ray tube
8707d-8710 discharge machine apparatus : with monitor or television or crt
8707d-8711 numerical display
8707d-8712 liquid crystal display
8707d-8713 display: light emitting diode or LED
8707d-8714 ALARM
8707d-8715 Wire Cutting: display device for indicating locus of processing electrode
8707d-8716 Wire Cutting: display device indicating remaining time in view of wire feed rate from bobbin
8707d-8717 Wire Cutting: converting a NC program into display data
7314b-8721 Misc. Hardware Digests pertinent to EDM
8721b-8722 Computer or Digital Electronics Topics in EDM
8722d-8723 Computer Control: With Fuzzy Logic and/or knowledge data base
8722d-8724 Network: Internet
8722d-8725 Computers: Multiplicity
8722d-8726 computer: microprocessor
8722d-8727 Computer Control
8722d-8728 Computer with knowledge memory
8722d-8729 Computer: with image processing of the workpiece
8722d-8730 Memory: containing electrode configuration
8722d-8731 Memory: database with table including workpiece material
8722d-8732 Memory: made of magnetic tape
8722d-8733 computer: with data base
8722d-8734 computer: with memory of unspecified type
8722d-8735 computer: with RAM
8722d-8736 computer; with video RAM
8722d-8737 computer: with ROM
8722d-8738 computer: with PROM
8722d-8739 computer: with program analyzer or program checker
8722d-8740 computer: with control of X-Y table
8722d-8741 computer: with control of upper wire guide in U-V plane
8722d-8742 computer: with control of upper wire guide to move to UV axes origin
8722d-8743 computer: with control of the upper wire guide position along the Z axis
8722d-8744 computer: with control to move tank to an XY axes origin
8722d-8745 computer: with control of wire tension
8722d-8746 computer: with controlled variables
8722d-8747 Computer control with each icon associated with a respective dialog window
8722d-8748 Computer machining program is prepared based on CAD or CAM
8722d-8749 Computer program is prepared based on machining conditions stored in data base
8722d-8750 Computer program calculates the approaching machining conditions
8722d-8751 Computer: predicts wire breakage or wire disconnection
8722d-8752 Computer: with working history of NC program memorized in RAM
8722d-8753 computer program with subroutine for jump control
8722d-8754 NC Control: with user setting of wire electrode offset
8722d-8755 NC Control: with user selecting sets of machining conditions
8722d-8756 Computer: with Quality Control
8721b-8758 Robotic Topics in EDM
8758d-8759 unspecified robot details
7314b-8762 Auxiliary or Accessory EDM Hardware
8762d-8763 discharge machine apparatus: with mirror
8762d-8764 apparatus: with associated measuring station
7314b-8766 Special EDM systems for particular workpiece(s) or Applications
0b-8769 EDM procedural aspects - methods and other non-hardware facets
8769b-8770 EDM Processes
8770b-8771 Regular EDM machining
8771d-8772 machining copies from a master model or master mold
8771d-8773 using end of wire for discharge machining
8771d-8774 machining a pattern
8771d-8775 regular discharge machining: unspecified type
8771d-8776 regular discharge machining: simultaneously on both sides of a workpiece
8771d-8777 regular discharge machining: alternately on both sides of a workpiece
8771d-8778 regular discharge machining: a single workpiece with multiple electrodes
8771d-8779 regular discharge machining: a plurality of workpieces with multiple electrodes
8771d-8780 regular discharge machining: machining workpiece between two electrodes
8771d-8781 regular discharge machining: with concurrent application of magnetic field
8771d-8782 regular discharge machining with concurrent application of ultrasonic waves
8771d-8783 regular discharge machining: rough and finish machining
8771d-8784 regular discharge machining: roughening surface of workpiece
8771d-8785 regular discharge machining: rough machining
8771d-8786 regular discharge machining: finish machining
8771d-8787 regular discharge machining: with positively charged electrode
8771d-8788 regular discharge machining: finish machining to create a mirror finish
8771d-8789 regular discharge machining: creating satin finish
8771d-8790 regular discharge machining: finish machining to create smooth,glossy surface
8771d-8791 regular discharge machining: removing tar(sludge) from workpiece or electrode
8771d-8792 regular discharge machining: deburring
8771d-8793 regular discharge machining: laser beam makes workpiece surface conductive
8771d-8794 regular discharge machining: using laser beam to guide discharge to workpiece
8771d-8795 regular discharge machining: polishing workpiece
8771d-8796 regular discharge machining: removing damaged drills or taps or screws
8771d-8797 regular discharge machining: trimming
8771d-8798 regular discharge machining: forming groove(s) or slot(s) in workpiece
8771d-8799 regular discharge machining: under numeric control
8771d-8800 regular discharge machining: with repeated scanning of electrode over surface
8771d-8801 regular discharge machining: in situ operation
8771d-8802 regular discharge machining: portable machine
8771d-8803 regular discharge machining: portable machine conained in box with handle
8771d-8804 regular discharge machining: chamfering
8771d-8805 regular discharge machining: taper
8770b-8807 Traveling Wire Cutting Discharge Machining
8807d-8808 TRAVELLING WIRE DISCHARGE MACHINING OF UNSPECIFIED TYPE
8807d-8809 WIRE CUTTING: corner miscellaneous or unspecified details
8807d-8810 Wire Cutting: inside or outside cutting issues recognized
8807d-8811 Wire Cutting: causing electric discharges by vibrating electrode wire
8807d-8812 Wire Cutting: taper machining
8807d-8813 Wire Cutting: taper machining to form a tapered hole
8807d-8814 Wire Cutting: with vibrating wire electrode
8807d-8815 Wire Cutting: apparatus suppresses or prevents vibrations or deflection of wire
8807d-8816 Wire Cutting: wire slidable on guide and both reels on same side of workpiece
8807d-8817 Wire Cutting: groove(s) or slot(s) on workpiece surface
8807d-8818 Wire cutting: portable machine
8807d-8819 Wire cutting: a cone
8807d-8820 Wire Cutting: entirely through workpiece
8807d-8821 Wire Cutting: discharge position detector on wire
8807d-8822 Wire Cutting: with means for positioning the wire electrode (e.g. vertical position)
8807d-8823 Wire cutting: with vertical positioning jig to position wire vertically
8807d-8824 Wire Cutting: disconnection position detection
8807d-8825 Wire cutting under Numeric Control
8807d-8826 Wire Cutting with different machining blocks under different conditions
8807d-8827 Wire Cutting: using interpolation for path calculation
8807d-8828 Wire Cutting: with an auxillary electrode to prevent rust (corrosion)
8807d-8829 Wire Cutting: with concurrent application of magnetic field to machining gap
8807d-8830 WIre Cutting: using magnetic field to deflect or move wire electrode
8807d-8831 Wire Cutting core support or removal
8807d-8832 Wire Cutting: core is supported by suction pads
8807d-8833 Wire Cutting: core is supported using magnet(s) or electromagnet(s)
8807d-8834 Wire cutting: coreless machining by gradually increasing size of hole
8807d-8835 Wire Cutting: using magnet or electromagnet to remove cut off work chips
8807d-8836 Wire Cutting: using wire cutting to finish machine hole
8807d-8837 Wire Cutting: reducing wire flexture
8807d-8838 Wire Cutting: with prevention of wire breakage
8807d-8839 Wire Cutting: with current alternately sent to upper and lower current feeders
8807d-8840 Wire Cutting: rough and finish machining
8807d-8841 Wire Cutting: finish machining (only)
8807d-8842 Wire Cutting: with apparatus for replacement of wire electrode
8807d-8843 Wire Cutting: machining a single workpiece with multiple wire electrodes
8807d-8844 Wire Cutting: simultaneous machining a workpiece with a plurality of wire electrodes
8807d-8845 Wire cutting: simultaneously machining a workpiece with multiple segements of a single wire electrode
8807d-8846 Wire Cutting: machining a single workpiece with discharge between two electrodes
8807d-8847 Wire Cutting: machining multiple workpieces with multiple wire electrodes
8807d-8848 WIre Cutting: machining multiple workpieces simultaneously with a single wire electrode
8807d-8849 Wire Cutting: with different wires used for rough and finish machining
8807d-8850 Wire Cutting: with rough and finish machining done in parallel in one operation
8807d-8851 Wire Cutting: machining operations on different areas of workpiece
8807d-8852 Wire Cutting: in situ machining
8807d-8853 Wire Cutting: with positively charged electrode wire
8770b-8855 Micromachining with EDM
8855d-8856 EDM micromachining: finely shaping the surface of a workpiece at the atomic scale
8855d-8857 Nanoscale electric discharge machining
8855d-8858 micromachining: miscellaneous
8770b-8860 Creation of Particles by EDM
8860d-8861 creating particles from two electrodes
8860d-8862 creating nanoscale particles
8770b-8864 Drilling by EDM
8864d-8865 drilling: by trepanning
8864d-8866 drilling: forming pores
8864d-8867 drilling: forming micron-sized holes
8864d-8868 drilling: forming a tapered hole or conical hole
8864d-8869 drilling: forming a helical bore or tap or screw threaded bore
8864d-8870 drilling: unspecified forming hole(s)
8864d-8871 drilling: forming a blind hole
8864d-8872 drilling: forming a hole for subsequent wire threading
8864d-8873 drilling: using EDM to form a hole in a guide prior to forming a hole in a workpiece
8864d-8874 drilling: deep hole
8864d-8875 drilling: forming a cavity
8864d-8876 drilling: thin hole
8864d-8877 drilling: small hole
8864d-8878 drilling: small diameter hole
8864d-8879 drilling: chamfered hole
8864d-8880 drilling: hole with polygonal cross section
8864d-8881 drilling: hole with an elliptical cross section
8864d-8882 drilling: hole with a circular cross section
8864d-8883 drilling: hole with a Y-shape
8864d-8884 drilling: forming a hole with threads
8864d-8885 drilling: curved hole
8864d-8886 drilling: through hole
8864d-8887 drilling: through hole drilling with backwall protection
8864d-8888 drilling: forming a plurality of holes simultaneously
8864d-8889 drilling: forming holes simultaneously
8864d-8890 drilling: miscellaneous or unspecified holes
8770b-8892 EDM surface processing
8892d-8893 treatment of metal workpiece surface by electric discharges
8892d-8894 miscellaneous surface processing by coating using electric discharges
8892d-8895 surface processing by coating by scanning electrode in X-Y plane
8770b-8897 Misc. EDM methods
8897d-8898 electric discharge welding
8897d-8899 PRESSURE WAVE FROM ELECTRIC DISCHARGE SHAPES WORKPIECE
8897d-8900 MACHINING DISCHARGES CREATED BY CHANGING GAP WIDTH
8897d-8901 DISCHARGE MACHINING WITHOUT USING WORKPIECE AS ELECTRODE
8769b-8904 Preparatory or Pre-treatment activities associated with an EDM process
8904d-8905 Preliminary treatment of placing a conductive layer onto the workpiece
8904d-8906 Preliminary treatment of applying a photoresist layer on the workpiece
8904d-8907 Preliminary treatment of workpiece by forming a layer of metal on workpiece
8904d-8908 bringing the wire electrode into contact with the workpiece
8904d-8909 preliminary treatment: welding blanks together
8904d-8910 regular EDM: electrode initially strikes workpiece to provide datum position setting
8904d-8911 preliminary treatment: ultrasonic machining through nonconductive layer
8904d-8912 preliminary treatment: laser cutting or laser drilling
8904d-8913 preliminary treatment: measuring the thickness of the workpiece
8904d-8914 mechanically shaping the electrode
8904d-8915 washing the electrode
8904d-8916 shaping the wire electrode by using a drawing die
8904d-8917 coating the wire eletrode to its original thickness for reuse
8904d-8918 coating the workpiece
8904d-8919 applying rust resistant material of wax or the like to internal surface of start hole
8904d-8920 Adjusting machining coordinates according to actual workpiece position
8769b-8922 Activity during the EDM process beyond the basic discharge machining
8922d-8923 using laser beam to guide electric discharge
8922d-8924 Wire Cutting: Along path arc changing machining conditions
8922d-8925 Wire Cutting: Short circuit gap control for large width workpiece
8922b-8926 EDM Wire Cutting, Corner Issues
8926d-8927 Wire Cutting: Energy is gradually reduced and restored at Corner
8926d-8928 Wire Cutting: Increase Pulse off-time at corner
8926d-8929 Wire Cutting: calculating a correction path at corner
8926d-8930 Wire Cutting: inserting an arc path at corner
8926d-8931 Wire Cutting: Pulse Energy changed according to Mach. Area at Corner
8926d-8932 Wire Cutting: Relative movement speed of wire at corner is constant
8926d-8933 Wire Cutting: Increases wire tension at Corner
8926d-8934 Wire Cutting: velocity at corner does not exceed set maximum value
8926d-8935 Wire Cutting: Varies relative speed of wire at corner
8926d-8936 Wire Cutting: varies relative speed of wire at corner according to wire deflection
8926d-8937 Wire Cutting: At corner gap is constant
8926d-8938 Wire Cutting: controlling discharge rate at corner
8926d-8939 Wire Cutting: decellerating table just before corner machining
8926d-8940 Wire Cutting: Wire advance at start of corner halted to correct wire lag
8926d-8941 Wire Cutting: at corner supply of fluid is a Func( shape of cutting path)
8769b-8944 Post-EDM activities and treatment of the workpiece
8944d-8945 post treatment: pickling
8944d-8946 post treatment: sending air to machined hole to remove moisture
8944d-8947 post treatment: screen printing a coating of low temp curing polymer ink
8944d-8948 post treatment: electropolishing (ECM) to remove heat affected zone (HAZ) recast layer
8944d-8949 post treament: electrochemical machining (ECM) (e.g. to finish machine workpiece)
8944d-8950 post treatment: grinding
8944d-8951 post treatment: polishing by magnetic polishing tool
8944d-8952 post treatment: using abrasive particles to polish workpiece
8944d-8953 post treatment: blasting
8944d-8954 post treatment: shot peening
8944d-8955 post treatment: liquid etching
8944d-8956 post treatment: laser cutting or laser drilling or laser polishing
8944d-8957 post treatment: electron beam
8944d-8958 post treament: welding of miscellaneous or unspecified type
8944d-8959 post treatment: laser welding
8944d-8960 post treatment: butt welding
8944d-8961 post treatment: sputtering
8944d-8962 post treatment: ion plating
8944d-8963 post treatment: washing the electrode
8769b-8965 Environment in which EDM is carried out
8769b-8967 EDM method multiplicities
8967b-8968 EDM combined with other machining technology
8968d-8969 EDM and mechanical machining simultaneously
8968d-8970 Combined: EDM and laser machining apparatus
8968d-8971 Combined: EDM and plasma machining apparatus
8968d-8972 Combined: EDM and water jet nozzle cutting apparatus
8968d-8973 Combined: EDM and ultrasonic machining by fluid
8968d-8974 Combined: EDM or mechanical milling
8968d-8975 Combined: EDM or mechanical grinding
8968d-8976 Wire Cutting followed by laser beam to reduce surface roughness
8769b-8979 Miscellaneous EDM method facets
8979d-8980 << EXPERIMENTAL determining optimal machining parameters>>
8769b-8982 Auxiliary or peripheral methods
8982d-8983 method of making an electrode: miscellaneous
8982d-8984 Simulation or Simulator or prediction of machining result
8982d-8985 Wire Cutting: with TEST machining of machining parameters
8769b-8987 Explicit Overall Purpose(s) of or Problem Solved by Disclosed EDM Arrangement; Teachings
8987b-8988 Teachings in EDM document
8988d-8989 either EDM or mechanical milling
8988d-8990 either EDM or laser machining
8988d-8991 either EDM or ECM
8988d-8992 Teaching: EDM vs ECM
8988d-8993 Teaching:desirability of using copper as electrode material
8988d-8994 Teaching: graphite is capable of very low wear during EDM.
8988d-8995 Teaching: graphite electrode machines 10X faster than metal electrode
8988d-8996 Teaching: graphite electrode wears more quickly than metal electrode
8988d-8997 Teaching: using linear motor instead of ball and screw to avoid backlash
8988d-8998 Teaching: using pulse trains to reduce pool and spatter effect on workpiece surface
8988d-8999 Teaching: using wire electrode with soluble(noble) metal to prevent burr creation
8988d-9000 Teaching: electrode is rigid to prevent deformation if it collides with workpiece
8988d-9001 Teaching: with the elapse of time the discharge column grows bigger
8988d-9002 Teaching: control of energy released by a capacitor for discharge
8988d-9003 Teaching: preventing electolytic action even though water is used as dielectric
8988d-9004 Teaching: using same EDM unit for regular or wire cutting discharge machining
8988d-9005 Teaching: stopping machine frame capacitance from harming machining accuracy
8988d-9006 Teaching: piezoelectric devices compsenate for errors from bearings and supports
8988d-9007 Teaching: using piezoelectric control to adjust gap during movement by step motor
8988d-9008 Teaching: preventing electrolysis or corrosion
8988d-9009 Teaching: cancels out electrolysis caused by stray current
8988d-9010 Teaching: roughening surface to increase surface area
8988d-9011 Teaching: roughening increases adhesion of surface to other workpiece or coating
8988d-9012 Teaching: using frequency converter to change alternating current frequency
8988d-9013 Teaching: stopping discharge by flowing inert gas into gap
8988d-9014 Teaching: rotating wire electrode to expel chips from the gap
8988d-9015 Teaching: discharge or ionization channel increases over time
8988d-9016 Teaching: stopping machining when machine calculates machining is complete (finished)
8988d-9017 Teaching: using transformer to reverse polarity
8988d-9018 Teaching: producing current in gap to oppose short circuit current
8988d-9019 Teaching: using shape of cable to reduce self inductance for increased speed
8988d-9020 Teaching: charging the capacitor at a slower rate when the gap is deionizing
8988d-9021 Teaching: sensing temperature of lower arm to set temperature of machining fluid
8988d-9022 Teaching: having the pulse on time < 3x the pulse off time
8988d-9023 teaching: storing wire coordinates and block number of wire breaking (disconnection)
8988d-9024 Teaching: preventing undesired gaseous wire cutting electric discharge machining
8988d-9025 Teaching: using ultrasonic waves to remove detritus or debris from gap
8988d-9026 Teaching: reducing stray capacitance to improve surface roughness
8988d-9027 Teaching: annealing the wire electrode to prevent wire breakage
8988d-9028 Teaching: repairing wire electrode so that it can be used again (recycle)
8988d-9029 Teaching: using magnetic fields to guide wire electrode without electrode wear
8988d-9030 Teaching: applying compressed air through a nozzle to dry workpiece
8988d-9031 Teaching: applying a rust proof agent through a nozzle to prevent work from rusting
0b-9035 General Document Characteristics
9035d-9036 ROBERT WATSON
9035d-9037 Patents examined in 269 that disclose EDM in specification or claims
9035d-9038 USING HEATED WIRE FOR CUTTING
9035b-9039 Improperly classified in EDM subclasses
9039d-9040 improperly classified: welding patent
9039d-9041 improperly classified: electrochemical machining
9039d-9042 ECMing a turbine blade
9039d-9043 improperly classified: laser machining
9039d-9044 improperly classified: arc cutting
9039d-9045 improperly classified: electron beam
9039d-9046 improperly classified: performing action by mechanical deburring
9039d-9047 improperly classified: water jet nozzle
9039d-9048 improperly classified: grinding
0b-9051 United States Subclasses associated with EDM
9051s-9052 219/69.11 ...Electric spark machining
9051s-9053 219/69.12 ....Wire cutting
9051s-9054 219/69.13 ....Circuits
9051s-9055 219/69.14 ....Dielectric composition and purification
9051s-9056 219/69.15 ....Electrodes
9051s-9057 219/69.16 ....Gap spacing control
9051s-9058 219/69.17 ....Methods
9051s-9059 219/69.18 ....Pulse
9051s-9060 219/69.19 ....Safety circuits
9051s-9061 219/69.2 ....Vibrating electrodes or workpiece
9051s-9062 700/162 Electrical discharge machining (EDM)
0b-14917 CPC subgroups associated with Electrical Discharge Machining ( EDM )
14917b-14918 Main group B23H1
14918s-14919 B23H1-00 Electrical discharge machining, i.e. removing metal with a series of rapidly recurring electrical discharges between an electrode and a workpiece in the presence of a fluid dielectric
14918s-14920 B23H1-02 .Electric circuits specially adapted therefor, e.g. power supply, control, preventing short circuits or other abnormal discharges
14918s-14921 B23H1-022 ..{for shaping the discharge pulse train}
14918s-14922 B23H1-024 ..{Detection of, and response to, abnormal gap conditions, e.g. short circuits}
14918s-14923 B23H1-026 ..{Power supply protection, e.g. detection of power switch breakdown}
14918s-14924 B23H1-028 ..{for multiple gap machining}
14918s-14925 B23H1-04 .Electrodes specially adapted therefor or their manufacture
14918s-14926 B23H1-06 ..Electrode material
14918s-14927 B23H1-08 .Working media
14918s-14928 B23H1-10 .Supply or regeneration of working media
14917b-14930 Various subgroups from Main group B23H5
14930s-14931 B23H5-00 Combined machining
14930s-14932 B23H5-02 .Electrical discharge machining combined with electrochemical machining
14930s-14933 B23H5-04 .Electrical discharge machining combined with mechanical working
14930s-14934 B23H5-10 .Electrodes specially adapted therefor or their manufacture
14930s-14935 B23H5-12 .Working media
14930s-14936 B23H5-14 .Supply or regeneration of working media
14917b-14938 Main group B23H7
14938s-14939 B23H7-00 Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
14938s-14940 B23H7-02 .Wire-cutting
14938s-14941 B23H7-04 ..Apparatus for supplying current to working gap; Electric circuits specially adapted therefor
14938s-14942 B23H7-06 ..Control of the travel curve of the relative movement between electrode and workpiece
14938s-14943 B23H7-065 ...{Electric circuits specially adapted therefor}
14938s-14944 B23H7-08 ..Wire electrodes
14938s-14945 B23H7-10 ...Supporting, winding or electrical connection of wire-electrode
14938s-14946 B23H7-101 ....{Supply of working media}
14938s-14947 B23H7-102 ....{Automatic wire threading}
14938s-14948 B23H7-104 ....{Wire tension control}
14938s-14949 B23H7-105 ....{Wire guides}
14938s-14950 B23H7-107 ....{Current pickups}
14938s-14951 B23H7-108 ....{Used wire disposal devices}
14938s-14952 B23H7-12 .Rotating-disc electrodes
14938s-14953 B23H7-14 .Electric circuits specially adapted therefor, e.g. power supply
14938s-14954 B23H7-16 ..for preventing short circuits or other abnormal discharges
14938s-14955 B23H7-18 ..for maintaining or controlling the desired spacing between electrode and workpiece
14938s-14956 B23H7-20 ..for programme-control, e.g. adaptive
14938s-14957 B23H7-22 .Electrodes specially adapted therefor or their manufacture
14938s-14958 B23H7-24 ..Electrode material
14938s-14959 B23H7-26 .Apparatus for moving or positioning electrode relatively to workpiece; Mounting of electrode
14938s-14960 B23H7-265 ..{Mounting of one or more thin electrodes}
14938s-14961 B23H7-28 ..Moving electrode in a plane normal to the feed direction, e.g. orbiting
14938s-14962 B23H7-30 ..Moving electrode in the feed direction
14938s-14963 B23H7-32 ..Maintaining desired spacing between electrode and workpiece
14938s-14964 B23H7-34 .Working media
14938s-14965 B23H7-36 .Supply or regeneration of working media
14938s-14966 B23H7-38 .Influencing metal working by using specially adapted means not directly involved in the removal of metal, e.g. ultrasonic waves, magnetic fields or laser irradiation
14917b-14968 Main group B23H11-00
14968s-14969 B23H11-00 Auxiliary apparatus or details, not otherwise provided for
14968s-14970 B23H11-003 .{Mounting of workpieces, e.g. working-tables}
14968s-14971 B23H11-006 .{Electrical contacts or wires}
14917b-14973 Main group B23H2300
14973s-14974 B23H2300-00 Power source circuits or energization
14973s-14975 B23H2300-10 .Pulsed electrochemical machining
14973s-14976 B23H2300-12 ..Positive and negative pulsed electrochemical machining
14973s-14977 B23H2300-20 .Relaxation circuit power supplies for supplying the machining current, e.g. capacitor or inductance energy storage circuits
14973s-14978 B23H2300-22 ..Circuits using or taking into account line impedance to shape the discharge pulse
14917b-14980 Miscellaneous EDM subgroups
14980s-14981 A61C13-0015 ...{using electrical discharge machining [EDM], e.g. spark erosion}
14980s-14982 F16C2220-68 ..by electrical discharge or electrochemical machining
14980s-14983 G05B2219-31405 ...EDM electronic data management
14980s-14984 G05B2219-45043 ...EDM machine, wire cutting
14980s-14985 G05B2219-45221 ...Edm, electrical discharge machining, electroerosion, ecm, chemical
14980s-14986 G05B2219-49326 ...Drill on laser machine, transfer to edm for operation on hole, adjust position
14980s-14987 G05B2219-49329 ...Combine edm and milling
14980s-14988 G05B2219-50331 ...Electrode, wire gap compensation in edm, wire cutting