JPS57189723A - Electric discharge machining condition detector - Google Patents
Electric discharge machining condition detectorInfo
- Publication number
- JPS57189723A JPS57189723A JP7350481A JP7350481A JPS57189723A JP S57189723 A JPS57189723 A JP S57189723A JP 7350481 A JP7350481 A JP 7350481A JP 7350481 A JP7350481 A JP 7350481A JP S57189723 A JPS57189723 A JP S57189723A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- comparator
- inter
- discharge machining
- compared
- 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.)
- Pending
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 identify an abnormal discharge condition precisely by comparing in size the reference waveform generated at the timing when high voltage pulses are not applied and the reference voltages with the inter-pole voltage in a discharge machining machine. CONSTITUTION:The inter-pole voltage E0 is compared with the first reference voltage E1 by the first comparator 7, is compared with the second reference voltage E2 by the second comparator 8, with the third reference voltage E3 by the third comparator 9, and the reference wave C generated at the timing when high voltage pulses for the discharge machining are not applied is compared with fourth comparator 10 respectively. Individual comparison results of the comparators 7-10 are detected at the predetermined timing, and when the reference wave C is less than the inter-pole voltage E0 and the reference voltage E1 is less than the inter-pole voltage E0' a logical value 1 is output from an AND circuit 20 as an abnormal arc discharge condition detection signal, thereby an abnormal arc discharge condition can be detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7350481A JPS57189723A (en) | 1981-05-18 | 1981-05-18 | Electric discharge machining condition detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7350481A JPS57189723A (en) | 1981-05-18 | 1981-05-18 | Electric discharge machining condition detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57189723A true JPS57189723A (en) | 1982-11-22 |
Family
ID=13520145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7350481A Pending JPS57189723A (en) | 1981-05-18 | 1981-05-18 | Electric discharge machining condition detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57189723A (en) |
-
1981
- 1981-05-18 JP JP7350481A patent/JPS57189723A/en active Pending
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