Travelling wire EDM apparatus

Details Travelling wire EDM apparatus Travelling wire EDM apparatus

1980-11-21

1982-12-14

Shaw, C. C.

Electric heating

Metal heating

Cutting or disintegrating

B23P 108

Patent

active

043639496

ABSTRACT:
A correction system for a travelling wire EDM machine cutting a workpiece by means of a travelling electrode wire stretched between two guide members and comprising a pair of servo motors for effecting displacement of the guide members relative to their respective support arms, such as to incline the electrode wire relative to the workpiece for providing the cut in the workpiece with an appropriate predetermined conicity or draft. One of the servo motors providing such displacement is, in addition, controlled such as to compensate for thermally-induced expansions or contractions of one of the support arm guide members relative to the other.

REFERENCES:
patent: 3731044 (1973-05-01), Ullmann et al.
patent: 3731045 (1971-05-01), Ullmann et al.
patent: 3849624 (1974-11-01), Dulebohn et al.

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