GB774090A - Apparatus for machining metals by means of intermittent electric discharges - Google Patents

Apparatus for machining metals by means of intermittent electric discharges

Info

Publication number
GB774090A
GB774090A GB32318/53A GB3231853A GB774090A GB 774090 A GB774090 A GB 774090A GB 32318/53 A GB32318/53 A GB 32318/53A GB 3231853 A GB3231853 A GB 3231853A GB 774090 A GB774090 A GB 774090A
Authority
GB
United Kingdom
Prior art keywords
workpiece
electrode
nov
terminals
parallel
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
GB32318/53A
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.)
Centre National de la Recherche Scientifique CNRS
Original Assignee
Centre National de la Recherche Scientifique CNRS
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 Centre National de la Recherche Scientifique CNRS filed Critical Centre National de la Recherche Scientifique CNRS
Publication of GB774090A publication Critical patent/GB774090A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Abstract

774,090. Removing metal by spark discharge. CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE. Nov. 20, 1953 [Nov. 21, 1952], No. 32318/53. Class 83 (4). Apparatus for spark erosion comprises terminals for connection to a voltage source connected through an impedance to two circuits in parallel, the first comprising a tool electrode and the workpiece and the second being a delay line having only its input terminals connected to the first circuit. Current is supplied from terminals 1, 2 through a variable inductance 3 in series with a valve or solid contact rectifier 4 to the workpiece 18 and electrode 17 in parallel with an open circuit delay line comprising condensers 12-16 and inductances 8-11. The workpiece and electrode are preferably immersed in water, mineral oil or kerosene. The characteristic impedance of the delay is made to approximate that of the discharge path.
GB32318/53A 1952-11-21 1953-11-20 Apparatus for machining metals by means of intermittent electric discharges Expired GB774090A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1076289X 1952-11-21

Publications (1)

Publication Number Publication Date
GB774090A true GB774090A (en) 1957-05-08

Family

ID=9607574

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32318/53A Expired GB774090A (en) 1952-11-21 1953-11-20 Apparatus for machining metals by means of intermittent electric discharges

Country Status (7)

Country Link
BE (1) BE523661A (en)
CH (1) CH315171A (en)
DE (1) DE1076289B (en)
FR (1) FR1066737A (en)
GB (1) GB774090A (en)
LU (1) LU32422A1 (en)
NL (2) NL182871B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2899535A (en) * 1956-04-04 1959-08-11 Krall

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2322561A (en) * 1943-06-22 automatic balancing of rotating bodies
US2235385A (en) * 1939-03-23 1941-03-18 Rava Alexander Welding method and apparatus
LU31769A1 (en) * 1951-11-14 Method X Company

Also Published As

Publication number Publication date
DE1076289B (en) 1960-02-25
LU32422A1 (en)
NL182871B (en)
BE523661A (en)
CH315171A (en) 1956-07-31
NL93571C (en)
FR1066737A (en) 1954-06-09

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