GB843323A - Improvements in or relating to spark erosion apparatus - Google Patents

Improvements in or relating to spark erosion apparatus

Info

Publication number
GB843323A
GB843323A GB22945/58A GB2294558A GB843323A GB 843323 A GB843323 A GB 843323A GB 22945/58 A GB22945/58 A GB 22945/58A GB 2294558 A GB2294558 A GB 2294558A GB 843323 A GB843323 A GB 843323A
Authority
GB
United Kingdom
Prior art keywords
frequency
charging circuit
spark erosion
current
capacity
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
Application number
GB22945/58A
Inventor
Alfred Marie Aime Maillet
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LA SOUDURE ELECTRIQUE LANGUEPIN
Original Assignee
LA SOUDURE ELECTRIQUE LANGUEPIN
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by LA SOUDURE ELECTRIQUE LANGUEPIN filed Critical LA SOUDURE ELECTRIQUE LANGUEPIN
Publication of GB843323A publication Critical patent/GB843323A/en
Expired legal-status Critical Current

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

Abstract

843,323. Removing metal by spark erosion. LA SOUDURE ELECTRIQUE LANGUEPIN. July 17, 1958 [July 19, 1957], No. 22945/58. Class 83 (4). A spark erosion apparatus has a charging circuit comprising a source 1 of alternating current which charges a capacitive storage means 5 connected across the spark gap 10 through a rectifier network 2, and wherein the total inductance L of the charging circuit, the capacitance C and the angular frequency # of the current are chosen so as substantially to satisfy the equation #L = I/#C. The charging circuit has a low inductance and the frequency of the current may be varied by driving the alternator 1 by a motor M through a speedchange gear B. Alternatively several alternators each driven at a different speed or a variable frequency converter connected to the supply main may be used. The capacitor 5 is preferably of variable capacity and may comprise several capacitors connectible by switches in parallel and/or series. The capacitor switching may be linked with the frequency control whereby a workpiece 10 is first eroded at low frequency with high capacity and subsequently the capacity is decreased as the frequency is increased. Specific examples are given.
GB22945/58A 1957-07-19 1958-07-17 Improvements in or relating to spark erosion apparatus Expired GB843323A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1062362X 1957-07-19

Publications (1)

Publication Number Publication Date
GB843323A true GB843323A (en) 1960-08-04

Family

ID=9600587

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22945/58A Expired GB843323A (en) 1957-07-19 1958-07-17 Improvements in or relating to spark erosion apparatus

Country Status (4)

Country Link
US (1) US2966574A (en)
DE (1) DE1062362B (en)
FR (1) FR1187780A (en)
GB (1) GB843323A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3243567A (en) * 1961-05-26 1966-03-29 Elox Corp Michigan Electrical discharge maching apparatus
US3166689A (en) * 1962-02-19 1965-01-19 Gen Precision Inc Charging circuit for exploding bridge wires
US3213258A (en) * 1962-05-15 1965-10-19 Gen Motors Corp Electrical stock removal method and apparatus

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE529675A (en) * 1953-12-21
US2779859A (en) * 1954-11-12 1957-01-29 Gregory Ind Inc Stud welding device

Also Published As

Publication number Publication date
DE1062362B (en) 1959-07-30
US2966574A (en) 1960-12-27
FR1187780A (en) 1959-09-16

Similar Documents

Publication Publication Date Title
JPS5652133A (en) Electric source for wire-cut electric spark machining
GB843323A (en) Improvements in or relating to spark erosion apparatus
GB1393076A (en) Series ac commutator motor with regulated speed
JPS5728579A (en) Starting device of squirrel-cage induction motor
JPS5485309A (en) Three-phase induction motor
GB844011A (en) Improvements in or relating to electric spark erosion apparatus
JPS538899A (en) Spark erosion machine
GB1483679A (en) Pulse generator for electro-erosion machining of current conducting materials
GB656499A (en) Improvements in and relating to electric frequency transformation systems
SU135918A1 (en) Method for increasing the efficiency of a pulse generator
GB1102493A (en) Improvements in or relating to a process of machining by electro-erosion
GB1474414A (en) Electric circuit for braking an asynchronous electric motor
SU424308A1 (en) POWER SUPPLY FOR A GROUP OF ULTIMATE CONSUMERS
SU750680A1 (en) Voltage doubler
JPS5653564A (en) Brushless self-excited synchronous generator
JPS5625383A (en) Inverter device
JPS5460413A (en) Inverter
SU1638792A1 (en) Current pulse generator
SU783929A1 (en) Self-sustained series inverter
SU1085732A1 (en) Pulse generator for electric discharge machining of materials
SU99817A1 (en) Device for powering a welding transformer for resistance welding
SU531693A1 (en) Control method of welding capacitor machine
JPS5713971A (en) Rectifying circuit
GB705766A (en) Method of selectively connecting a condenser battery to a three-phase circuit
JPS5722390A (en) Driving device for alternate current motor