WebCPC CPC COOPERATIVE PATENT CLASSIFICATION

B23H　WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL (processes for the electrolytic or electrophoretic production of coatings, electroforming, or apparatus therefor C25D; processes for the electrolytic removal of material from objects C25F; manufacturing printed circuits using precipitation techniques to apply the conductive material to form the desired conductive pattern H05K 3/18)

B23H 1/00 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

B23H 1/02 ・Electric circuits specially adapted therefor, e.g. power supply, control, preventing short circuits or other abnormal discharges

B23H 1/022 ・・{for shaping the discharge pulse train (B23H 1/024 takes precedence)}

B23H 1/024 ・・{Detection of, and response to, abnormal gap conditions, e.g. short circuits (preventing short circuits or other abnormal discharges by altering machining parameters using adaptive control B23H 7/16)}

B23H 1/026 ・・{Power supply protection, e.g. detection of power switch breakdown}

B23H 1/028 ・・{for multiple gap machining}

B23H 1/04 ・Electrodes specially adapted therefor or their manufacture (B23H 9/00 takes precedence)

B23H 1/06 ・・Electrode material

B23H 1/08 ・Working media

B23H 1/10 ・Supply or regeneration of working media

B23H 3/00 Electrochemical machining, i.e. removing metal by passing current between an electrode and a workpiece in the presence of an electrolyte

B23H 3/02 ・Electric circuits specially adapted therefor, e.g. power supply, control, preventing short circuits

B23H 3/04 ・Electrodes specially adapted therefor or their manufacture (B23H 9/00 takes precedence)

B23H 3/06 ・・Electrode material

B23H 3/08 ・Working media

B23H 3/10 ・Supply or regeneration of working media

B23H 5/00 Combined machining

B23H 5/02 ・Electrical discharge machining combined with electrochemical machining

B23H 5/04 ・Electrical discharge machining combined with mechanical working

B23H 5/06 ・Electrochemical machining combined with mechanical working, e.g. grinding or honing

B23H 5/08 ・・Electrolytic grinding

B23H 5/10 ・Electrodes specially adapted therefor or their manufacture (B23H 1/04, B23H 3/04 take precedence)

B23H 5/12 ・Working media

B23H 5/14 ・Supply or regeneration of working media

B23H 7/00 Processes or apparatus applicable to both electrical discharge machining and electrochemical machining

B23H 7/02 ・Wire-cutting

B23H 7/04 ・・Apparatus for supplying current to working gap; Electric circuits specially adapted therefor

B23H 7/06 ・・Control of the travel curve of the relative movement between electrode and workpiece

B23H 7/065 ・・・{Electric circuits specially adapted therefor}

B23H 7/08 ・・Wire electrodes

B23H 7/10 ・・・Supporting, winding or electrical connection of wire-electrode

B23H 7/101 ・・・・{Supply of working media}

B23H 7/102 ・・・・{Automatic wire threading}

B23H 7/104 ・・・・{Wire tension control}

B23H 7/105 ・・・・{Wire guides}

B23H 7/107 ・・・・{Current pickups}

B23H 7/108 ・・・・{Used wire disposal devices}

B23H 7/12 ・Rotating-disc electrodes

B23H 7/14 ・Electric circuits specially adapted therefor, e.g. power supply {(B23H 3/02 takes precedence)}

B23H 7/16 ・・for preventing short circuits or other abnormal discharges {by altering machining parameters using adaptive control}

B23H 7/18 ・・for maintaining or controlling the desired spacing between electrode and workpiece

B23H 7/20 ・・for programme-control, e.g. adaptive (programme-control systems in general G05B 19/00)

B23H 7/22 ・Electrodes specially adapted therefor or their manufacture (B23H 7/08, B23H 7/12, B23H 9/00 take precedence)

B23H 7/24 ・・Electrode material

B23H 7/26 ・Apparatus for moving or positioning electrode relatively to workpiece; Mounting of electrode

B23H 7/265 ・・{Mounting of one or more thin electrodes}

B23H 7/28 ・・Moving electrode in a plane normal to the feed direction, e.g. orbiting

B23H 7/30 ・・Moving electrode in the feed direction (B23H 7/32 takes precedence)

B23H 7/32 ・・Maintaining desired spacing between electrode and workpiece {e.g. by means of particulate material}

B23H 7/34 ・Working media

B23H 7/36 ・Supply or regeneration of working media

B23H 7/38 ・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

B23H 9/00 Machining specially adapted for treating particular metal objects or for obtaining special effects or results on metal objects (heat treatment by cathodic discharge C21D 1/38)

B23H 9/001 ・{Disintegrating}

B23H 9/003 ・{Making screw-threads or gears}

B23H 9/005 ・{Machining elongated bodies, e.g. rods}

B23H 9/006 ・{Cavity sinking (B23H 9/14 takes precedence)}

B23H 9/008 ・{Surface roughening or texturing}

B23H 9/02 ・Trimming or deburring {(B23H 9/003 takes precedence)}

B23H 9/04 ・Treating surfaces of rolls

B23H 9/06 ・Marking or engraving

B23H 9/08 ・Sharpening

B23H 9/10 ・Working turbine blades or nozzles

B23H 9/12 ・Forming parts of complementary shape, e.g. punch-and-die

B23H 9/14 ・Making holes

B23H 9/16 ・・using an electrolytic jet

B23H 9/18 ・Producing external conical surfaces or spikes (B23H 9/08 takes precedence)

B23H 11/00 Auxiliary apparatus or details, not otherwise provided for

B23H 11/003 ・{Mounting of workpieces, e.g. working-tables}

B23H 11/006 ・{Electrical contacts or wires (B23H 7/10 takes precedence)}

B23H 2200/00 Specific machining processes or workpieces

B23H 2200/10 ・for making bearings

B23H 2200/20 ・for making conical bores

B23H 2200/30 ・for making honeycomb structures

B23H 2300/00 Power source circuits or energization

B23H 2300/10 ・Pulsed electrochemical machining

B23H 2300/12 ・・Positive and negative pulsed electrochemical machining

B23H 2300/20 ・Relaxation circuit power supplies for supplying the machining current, e.g. capacitor or inductance energy storage circuits

B23H 2300/22 ・・Circuits using or taking into account line impedance to shape the discharge pulse

B23H 2400/00 Moving mechanisms for tool electrodes

B23H 2400/10 ・for rotating the electrode

B23H 2500/00 Holding and positioning of tool electrodes

B23H 2500/20 ・Methods or devices for detecting wire or workpiece position

B23H 2600/00 Machining conditions

B23H 2600/10 ・Switching of machining conditions during machining

B23H 2600/12 ・・Switching from rough cutting to finish machining