JPS57168833A - Detecting method of electric discharge machining condition - Google Patents
Detecting method of electric discharge machining conditionInfo
- Publication number
- JPS57168833A JPS57168833A JP4937681A JP4937681A JPS57168833A JP S57168833 A JPS57168833 A JP S57168833A JP 4937681 A JP4937681 A JP 4937681A JP 4937681 A JP4937681 A JP 4937681A JP S57168833 A JPS57168833 A JP S57168833A
- Authority
- JP
- Japan
- Prior art keywords
- arc discharge
- machining
- voltage
- electric discharge
- discharge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- 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
- 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
- B23H1/02—Electric circuits specially adapted therefor, e.g. power supply, control, preventing short circuits or other abnormal discharges
- B23H1/024—Detection of, and response to, abnormal gap conditions, e.g. short circuits
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
PURPOSE:To discriminate a machining condition in no relation to a machining speed, by detecting time proportion of no-arc discharge, arc discharge and short- circuit for a time of applying pulse voltage to an electrode and detecting only a pulse of the arc discharge. CONSTITUTION:Machining pulse voltage of electric discharge machining changes in accordance with an electric discharge condition, and its waveform is obtained as shown by Vga at a normal electric discharge. No-arc discharge voltage Vgd, arc discharge voltage Vgb and short-circuit voltage Vgc are decided by a comparator with threshold voltages E1, E2, and a generation time of these voltages is detected. These detection signals are obtained as the proportion for a machining pulse applying time and utilized for showing an electric discharge condition in no relation to a machining speed. When the waveform Vgb of only an arc discharge, not contained with no-arc discharge voltage, is continued a prescribed number of times, a detection signal F of abnormal arc discharge is generated.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4937681A JPS57168833A (en) | 1981-04-03 | 1981-04-03 | Detecting method of electric discharge machining condition |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4937681A JPS57168833A (en) | 1981-04-03 | 1981-04-03 | Detecting method of electric discharge machining condition |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57168833A true JPS57168833A (en) | 1982-10-18 |
JPH022650B2 JPH022650B2 (en) | 1990-01-18 |
Family
ID=12829300
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4937681A Granted JPS57168833A (en) | 1981-04-03 | 1981-04-03 | Detecting method of electric discharge machining condition |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57168833A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005319577A (en) * | 2004-05-07 | 2005-11-17 | General Electric Co <Ge> | Distributed arc electroerosion |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51119597A (en) * | 1975-04-14 | 1976-10-20 | Inoue Japax Res Inc | Method and apparatus of controlling gap in discharge processing |
-
1981
- 1981-04-03 JP JP4937681A patent/JPS57168833A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51119597A (en) * | 1975-04-14 | 1976-10-20 | Inoue Japax Res Inc | Method and apparatus of controlling gap in discharge processing |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005319577A (en) * | 2004-05-07 | 2005-11-17 | General Electric Co <Ge> | Distributed arc electroerosion |
Also Published As
Publication number | Publication date |
---|---|
JPH022650B2 (en) | 1990-01-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5235851A (en) | Power source voltage detection circuit | |
JPS57212825A (en) | Protective device | |
JPS57168833A (en) | Detecting method of electric discharge machining condition | |
US3729610A (en) | Electrical discharge machining device using logical control | |
JPS5741267A (en) | Circuit for detecting steering angle center of vehicle | |
JPS5548531A (en) | Detecting method of electric spark machining condition | |
JPS5736584A (en) | Shortcircuit protection device | |
GB1309432A (en) | Frequency detection apparatus | |
JPS56163835A (en) | Detecting device for electric discharge machining state | |
JPS57211421A (en) | Wire cut discharge machining power source equipment | |
JPS57189723A (en) | Electric discharge machining condition detector | |
JPS54156296A (en) | Controlling method for wire-cut electric discharge machine | |
JPS57189724A (en) | Electric discharge machining condition detector | |
JPS56115024A (en) | Automatic threshold level setting circuit | |
JPS5781964A (en) | Protecting device for constant voltage power source for welding | |
JPS55125934A (en) | Wire cut electrical discharge machining apparatus | |
JPS5633235A (en) | Electrospark machining device | |
JPS57202870A (en) | Device for firing light-firing thyristor | |
JPS57138537A (en) | Electric spark machining device | |
JPS53144240A (en) | Signal detection circuit | |
JPS57151860A (en) | Fault detecting device for speed sensor | |
JPS57138529A (en) | Electric power source apparatus for electric discharge machining | |
JPS5752567A (en) | Consumable electrode type pulse arc welding machine | |
JPS5252299A (en) | Electrosparkl machining device | |
JPS5488972A (en) | Spark erosion device |