Wire cutting electric discharge machine with nozzle collision de

Details Wire cutting electric discharge machine with nozzle collision de Wire cutting electric discharge machine with nozzle collision de

1989-12-04

1990-12-04

Pellinen, A. D.

Electric heating

Metal heating

Cutting or disintegrating

324691, B23H 710, B23Q 558

Patent

active

049755579

ABSTRACT:
In a machining device such as a wire cut electric discharge machine, an electrically conductive rubber member is attached to the machining solution jetting nozzle of its machining head in such a manner that, when the machining head abuts against the workpiece, the resistance of the rubber member is changed being compressed by the nozzle and the workpiece, and the change in resistance of the rubber member is detected to determine whether the change in resistance is normal or abnormal, thereby to detect the collision of the nozzle with the workpiece, whereby the machining head is protected from damage.

REFERENCES:
patent: 2472214 (1949-06-01), Hurvitz
patent: 3358228 (1967-12-01), Bucher
patent: 3818334 (1974-06-01), Rosenberg
patent: 4814574 (1989-03-01), Babel et al.

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