GB860118A - Method and arrangement for detaching material by spark erosion - Google Patents
Method and arrangement for detaching material by spark erosionInfo
- Publication number
- GB860118A GB860118A GB9022/57A GB902257A GB860118A GB 860118 A GB860118 A GB 860118A GB 9022/57 A GB9022/57 A GB 9022/57A GB 902257 A GB902257 A GB 902257A GB 860118 A GB860118 A GB 860118A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrode
- polarity
- spark
- forming
- gap
- 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
-
- 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)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
860,118. Cutting by spark erosion. AGIE AKTIENGESELLSCHAFT FUR INDUSTRIELLE ELEKTRONIK. March 19, 1957 [March 19, 1956], No. 9022/57. Class 83 (4). In the removal of metal by spark erosion using an alternating current supply at least a part of the wave portions of one polarity are suppressed, the amount of suppression being increased in dependence upon the position of the electrode to thereby continuously widen the spark gap and thus compensate for burning-off of the electrode. The spark emission apparatus has switch means 5 for reversing the polarity of the spark gap 2 and current is supplied to the gap, which may be in a liquid dielectric, from a generator having variable voltage and frequency through a change-over switch 3. The polarity reversing switch 5 is bridged by a variable resistance 6 and half-wave rectifier 4 which suppresses at least part of one polarity. The rectifier may be a dry-plate type or a presaturated impedance coil may be used. The resistance 6 varies the amount of suppression and may be adjusted automatically with the advance of the electrode into the workpiece. An electrode 7, Fig. 2, may be used to bore a stepped hole in a blank 8 by using a positivelyconnected electrode for forming the smaller portion and a negatively-connected electrode for forming the larger portion. Another embodiment is described for forming a bore with opposed ribs, Figs. 3a, 3b (not shown). Reference has been directed by the Comptroller to Specification 773,782.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH860118X | 1956-03-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB860118A true GB860118A (en) | 1961-02-01 |
Family
ID=4543050
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9022/57A Expired GB860118A (en) | 1956-03-19 | 1957-03-19 | Method and arrangement for detaching material by spark erosion |
Country Status (5)
Country | Link |
---|---|
US (1) | US2951142A (en) |
CH (1) | CH337282A (en) |
DE (1) | DE1008428B (en) |
FR (1) | FR1169785A (en) |
GB (1) | GB860118A (en) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1109801B (en) * | 1957-12-12 | 1961-06-29 | Siemens Ag | Process for the production of work-related metal surfaces of workpieces by means of electrical discharge machining |
NL132982C (en) * | 1958-11-10 | |||
NL258818A (en) * | 1959-12-08 | |||
US3098149A (en) * | 1960-06-06 | 1963-07-16 | Inoue Kiyoshi | Spark discharge maching apparatus for hard metals |
US3213257A (en) * | 1960-07-19 | 1965-10-19 | Gen Motors Corp | Electrical stock removal apparatus |
US3158728A (en) * | 1960-07-26 | 1964-11-24 | Elox Corp Michigan | High voltage-reverse polarity edm |
FR1274953A (en) * | 1960-08-26 | 1961-11-03 | Soudure Elec Languepin | Method and device for electro-erosion machining |
US3109120A (en) * | 1960-10-20 | 1963-10-29 | Gen Motors Corp | Electrical stock removal apparatus |
US3062985A (en) * | 1960-11-08 | 1962-11-06 | Elox Corp Michigan | Impedance matching circuit for spark machining |
US3624338A (en) * | 1970-08-06 | 1971-11-30 | Ibm | Electrical discharge machining pulse-polarity-reversing control |
US3732392A (en) * | 1971-03-10 | 1973-05-08 | Elox Inc | Polarity reversal system for electrical discharge machining apparatus |
US3777102A (en) * | 1972-07-19 | 1973-12-04 | Colt Ind Operating Corp | Electrical discharge machining power supply circuit |
US4350863A (en) * | 1978-03-07 | 1982-09-21 | Inoue-Japax Research Incorporated | High-frequency power feeder circuitry and supply for electrical discharge machining |
JPS54119195A (en) * | 1978-03-07 | 1979-09-14 | Inoue Japax Res Inc | Electric discharge processing device |
US5399825A (en) * | 1991-03-01 | 1995-03-21 | Creare, Inc. | Inductor-charged electric discharge machining power supply |
JP3331077B2 (en) * | 1994-12-21 | 2002-10-07 | 株式会社ソディック | Power supply unit for electric discharge finishing |
JP5323283B1 (en) * | 2012-10-30 | 2013-10-23 | 三菱電機株式会社 | EDM machine |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2273819A (en) * | 1940-01-01 | 1942-02-24 | Kapella Ltd | Apparatus for electrically etching metallic articles |
-
1956
- 1956-03-19 CH CH337282D patent/CH337282A/en unknown
- 1956-04-09 DE DEA24662A patent/DE1008428B/en active Pending
-
1957
- 1957-03-18 FR FR1169785D patent/FR1169785A/en not_active Expired
- 1957-03-19 GB GB9022/57A patent/GB860118A/en not_active Expired
- 1957-03-19 US US647163A patent/US2951142A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US2951142A (en) | 1960-08-30 |
FR1169785A (en) | 1959-01-06 |
CH337282A (en) | 1959-03-31 |
DE1008428B (en) | 1957-05-16 |
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