GB1405989A - Method and circuit for perforating the method of controlling the tool feed in spark erosion machines - Google Patents

Method and circuit for perforating the method of controlling the tool feed in spark erosion machines

Info

Publication number
GB1405989A
GB1405989A GB3007373A GB3007373A GB1405989A GB 1405989 A GB1405989 A GB 1405989A GB 3007373 A GB3007373 A GB 3007373A GB 3007373 A GB3007373 A GB 3007373A GB 1405989 A GB1405989 A GB 1405989A
Authority
GB
United Kingdom
Prior art keywords
voltage
pulse
pulses
working
output
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
GB3007373A
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
Priority claimed from DE19722231752 external-priority patent/DE2231752C3/en
Application filed by AEG Elotherm GmbH filed Critical AEG Elotherm GmbH
Publication of GB1405989A publication Critical patent/GB1405989A/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
    • B23H7/00—Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
    • B23H7/14—Electric circuits specially adapted therefor, e.g. power supply
    • B23H7/18—Electric circuits specially adapted therefor, e.g. power supply for maintaining or controlling the desired spacing between electrode and workpiece

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Abstract

1405989 Automatic control of electric discharge machining AEG-ELOTHERM GmbH 25 June 1973 [29 June 1972] 30073/73 Heading G3R A control system for a spark erosion machine automatically adjusts the tool feed to keep the pulse effect ratio constant at a pre-set reference level. The pulse effect ratio is defined as the ratio of the duration of erosive action to the total duration of the applied pulse. In the embodiment shown, pulses are produced by generator 1 and applied to the working gap between electrode 2 and workpiece 3 to provide a working pulse shape consisting of an ignition period (high voltage) followed by an erosion period (low voltage). A detector 5 comprising voltage comparators provides an output at 10 when working pulses are detected and an output at 18 when short or opencircuit conditions apply. Signal generator 6 provides an output which is proportional to the duration of the total pulse length within the cycle of pulses and feeds amplifier 9 whose output comprises voltage pulses which after passing through circuit 12 have an amplitude Vi proportional to the pulse effect ratio. This voltage is compared with the reference voltage Vs to produce an error signal Vr which is used to control the tool feed mechanism 17. When short or open circuits occur the voltage on line 19 is used to provide a control signal causing mechanism 17 to move the tool such that working conditions are restored.
GB3007373A 1972-06-29 1973-06-25 Method and circuit for perforating the method of controlling the tool feed in spark erosion machines Expired GB1405989A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722231752 DE2231752C3 (en) 1972-06-29 Method and circuit arrangement for the feed control on EDM machines

Publications (1)

Publication Number Publication Date
GB1405989A true GB1405989A (en) 1975-09-10

Family

ID=5849115

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3007373A Expired GB1405989A (en) 1972-06-29 1973-06-25 Method and circuit for perforating the method of controlling the tool feed in spark erosion machines

Country Status (4)

Country Link
CH (1) CH557718A (en)
ES (1) ES415928A1 (en)
FR (1) FR2190572B1 (en)
GB (1) GB1405989A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2652974C3 (en) * 1976-11-22 1982-02-18 Aeg-Elotherm Gmbh, 5630 Remscheid Device for electrical discharge machines to generate a signal voltage that is variable with the width of its working gap
CH630829A5 (en) * 1979-05-08 1982-07-15 Charmilles Sa Ateliers PROCESS FOR MACHINING BY EROSIVE SPARKING.

Also Published As

Publication number Publication date
ES415928A1 (en) 1976-02-16
CH557718A (en) 1975-01-15
FR2190572A1 (en) 1974-02-01
FR2190572B1 (en) 1977-02-18
DE2231752A1 (en) 1974-01-17
DE2231752B2 (en) 1976-01-02

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee