JPS6471623A - Power supply circuit for electric discharge machining - Google Patents
Power supply circuit for electric discharge machiningInfo
- Publication number
- JPS6471623A JPS6471623A JP22426087A JP22426087A JPS6471623A JP S6471623 A JPS6471623 A JP S6471623A JP 22426087 A JP22426087 A JP 22426087A JP 22426087 A JP22426087 A JP 22426087A JP S6471623 A JPS6471623 A JP S6471623A
- Authority
- JP
- Japan
- Prior art keywords
- energy
- discharge
- resistor
- transistor
- current
- 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
- 238000003754 machining Methods 0.000 title 1
- 238000009825 accumulation Methods 0.000 abstract 1
- 239000003990 capacitor Substances 0.000 abstract 1
- 238000007599 discharging Methods 0.000 abstract 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 abstract 1
Landscapes
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
PURPOSE:To prevent large energy from accumulation in a discharge gap, when a discharge is interrupted, by conducting a current in the first and second energy consuming circuits after a switch means, which supplies voltage of a DC power supply to the discharge gap, is turned off. CONSTITUTION:When supply of discharge voltage is stopped by turning off a transistor 3, a transistor 4 starts discharging capacitance C4 between a gate and a source through a resistor 10, being soon turned on, and consuming energy, accumulated in a discharge circuit, by heat energy by a current I2, a surge is prevented. While when an input pulse is turned off, a transistor 13 is conducted through a buffer 14, photocoupler 15, buffer 17 and a resistor 18 when energy of lead wire inductance Lo and stray and between-discharge gap capacitances Co, CG is applied between source and drain by the time constant of a capacitor C13 and the resistor 18, consuming the energy by Joule heat by a current I3. Thus preventing the energy from accumulating in the discharge gap at the time of interrupting the discharge, a cutting chip can be easily discharged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62224260A JP2578824B2 (en) | 1987-09-08 | 1987-09-08 | Power supply circuit for electric discharge machining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62224260A JP2578824B2 (en) | 1987-09-08 | 1987-09-08 | Power supply circuit for electric discharge machining |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6471623A true JPS6471623A (en) | 1989-03-16 |
| JP2578824B2 JP2578824B2 (en) | 1997-02-05 |
Family
ID=16810987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62224260A Expired - Fee Related JP2578824B2 (en) | 1987-09-08 | 1987-09-08 | Power supply circuit for electric discharge machining |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2578824B2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5973224A (en) * | 1982-10-20 | 1984-04-25 | Mitsubishi Electric Corp | Power supply device for electric discharge machining |
| JPS60161519U (en) * | 1984-04-06 | 1985-10-26 | 日立精工株式会社 | Electrical discharge machine power supply circuit |
-
1987
- 1987-09-08 JP JP62224260A patent/JP2578824B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5973224A (en) * | 1982-10-20 | 1984-04-25 | Mitsubishi Electric Corp | Power supply device for electric discharge machining |
| JPS60161519U (en) * | 1984-04-06 | 1985-10-26 | 日立精工株式会社 | Electrical discharge machine power supply circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2578824B2 (en) | 1997-02-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |