GB1067206A - A control circuit for a spark erosion machine - Google Patents
A control circuit for a spark erosion machineInfo
- Publication number
- GB1067206A GB1067206A GB1775265A GB1775265A GB1067206A GB 1067206 A GB1067206 A GB 1067206A GB 1775265 A GB1775265 A GB 1775265A GB 1775265 A GB1775265 A GB 1775265A GB 1067206 A GB1067206 A GB 1067206A
- Authority
- GB
- United Kingdom
- Prior art keywords
- transistor
- spark erosion
- control
- transistors
- control circuit
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
- H03K5/01—Shaping pulses
-
- 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
- B23H1/022—Electric circuits specially adapted therefor, e.g. power supply, control, preventing short circuits or other abnormal discharges for shaping the discharge pulse train
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
1,067,206. Spark erosion. DEUTSCHE EDELSTAHLWERKE A.G., and ALLGEMEINE ELEKTRIGITATS - GESELLSCHAFT. April 27, 1965 [April 30, 1964], No. 17752/65. Heading B3V. In a spark erosion machine, the spark gap 2 is fed through an electronic switch 4, Fig. 4 (not shown), controlled by a timing device 5, and a feedback 9 is provided between the output of the switch and its control circuit. The switch is preferably a transistor 4 feeding a D.C. supply 1 to the gap 2 through a resistor 3. The transistor 4 is triggered by a pulse generator 5 acting through a control transistor 7 supplied from a second D.C. source 15. A feedback loop 9, including capacitor 10 and parallel resistor 11, is connected between the collector of transistor 4 and the base of control transistor 7. In a modification, Fig. 6 (not shown), transistor 7 is of the NPN type. In another embodiment, Fig. 5 (not shown), the feedback is provided by an emitter resistance 16 common to the two transistors. A plurality of transistors connected in parallel may be used instead of a single power transistor. The control or power transistors or both may be replaced by one unijunction transistor.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DED0044312 | 1964-04-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1067206A true GB1067206A (en) | 1967-05-03 |
Family
ID=7048230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1775265A Expired GB1067206A (en) | 1964-04-30 | 1965-04-27 | A control circuit for a spark erosion machine |
Country Status (3)
| Country | Link |
|---|---|
| CH (1) | CH428024A (en) |
| DE (1) | DE1540687A1 (en) |
| GB (1) | GB1067206A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6029213A (en) * | 1983-07-24 | 1985-02-14 | Inoue Japax Res Inc | Electric discharge machining circuit |
-
1964
- 1964-04-30 DE DE19641540687 patent/DE1540687A1/en active Pending
-
1965
- 1965-03-18 CH CH376565A patent/CH428024A/en unknown
- 1965-04-27 GB GB1775265A patent/GB1067206A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE1540687A1 (en) | 1969-08-21 |
| CH428024A (en) | 1967-01-15 |
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