GB1150297A - Spark Erosion Machines. - Google Patents

Spark Erosion Machines.

Info

Publication number
GB1150297A
GB1150297A GB44744/66A GB4474466A GB1150297A GB 1150297 A GB1150297 A GB 1150297A GB 44744/66 A GB44744/66 A GB 44744/66A GB 4474466 A GB4474466 A GB 4474466A GB 1150297 A GB1150297 A GB 1150297A
Authority
GB
United Kingdom
Prior art keywords
rectifier
transistor
pulse
controlled
spark erosion
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
GB44744/66A
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.)
SMS Elotherm GmbH
Original Assignee
AEG Elotherm GmbH
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 AEG Elotherm GmbH filed Critical AEG Elotherm GmbH
Publication of GB1150297A publication Critical patent/GB1150297A/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)
  • Generation Of Surge Voltage And Current (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)

Abstract

1,150,297. Spark erosion. REG-ELOTHERM G.m.b.H. 6 Oct., 1966 [16 Nov., 1965], No. 44744/66. Heading B3V. [Also in Division H3] In a spark erosion equipment having a switching transistor 1 in series with the erosion gap 3, 4, the transistor 1 is controlled by a fourlayer gate-turn-off silicon controlled rectifier 6. The four-layer rectifier 6 is preferably controlled by a rectangular pulse, differentiated at 10 so that the negative differentiated pulse turns off rectifier 6, turning on transistor 1 and initiating a working pulse through a current limiting resistor 2. The pulse is terminated by the positive differentiated pulse which turns on rectifier 6, turning off transistor 1. A shortcircuit protection arrangement (not shown) may feed supplementary signals to the second trigger electrode Bn. In Fig. 2 (not shown) transistor 1 is omitted, the gap being controlled directly by the four-layer rectifier 6.
GB44744/66A 1965-11-16 1966-10-06 Spark Erosion Machines. Expired GB1150297A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA0050792 1965-11-16

Publications (1)

Publication Number Publication Date
GB1150297A true GB1150297A (en) 1969-04-30

Family

ID=6937586

Family Applications (1)

Application Number Title Priority Date Filing Date
GB44744/66A Expired GB1150297A (en) 1965-11-16 1966-10-06 Spark Erosion Machines.

Country Status (2)

Country Link
ES (1) ES329162A1 (en)
GB (1) GB1150297A (en)

Also Published As

Publication number Publication date
ES329162A1 (en) 1967-05-01

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees