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Color Curly Brackets (indicating CPC extensions to IPC) References Date Revised

CPC
COOPERATIVE PATENT CLASSIFICATION
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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)
NOTE
-
This subclass covers the working of metal described as "electroerosion"

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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
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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
}
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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
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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
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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
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Combined machining
B23H 5/02
.
Electrical discharge machining combined with electrochemical machining
B23H 5/04
.
Electrical discharge machining combined with mechanical working
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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
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Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
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B23H 7/02
.
Wire-cutting
B23H 7/04
. .
Apparatus for supplying current to working gap; Electric circuits specially adapted therefor
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B23H 7/06
. .
Control of the travel curve of the relative movement between electrode and workpiece
B23H 7/065
. . .
{
Electric circuits specially adapted therefor
}
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B23H 7/08
. .
Wire electrodes
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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
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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)
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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
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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
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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
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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)
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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)
}
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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
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B23H 2300/00
Power source circuits or energization
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B23H 2300/10
.
Pulsed electrochemical machining
B23H 2300/12
. .
Positive and negative pulsed electrochemical machining
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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
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B23H 2400/00
Moving mechanisms for tool electrodes
B23H 2400/10
.
for rotating the electrode
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B23H 2500/00
Holding and positioning of tool electrodes
B23H 2500/20
.
Methods or devices for detecting wire or workpiece position
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B23H 2600/00
Machining conditions
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B23H 2600/10
.
Switching of machining conditions during machining
B23H 2600/12
. .
Switching from rough cutting to finish machining
This page is owned by Office of Patent Classification.
Last Modified: 10/10/2013