Electro-erosion machine tool and a pulse generator for use in su

Details Electro-erosion machine tool and a pulse generator for use in su Electro-erosion machine tool and a pulse generator for use in su

1976-06-10

1978-02-07

Reynolds, Bruce A.

Electric heating

Metal heating

Cutting or disintegrating

219 69P, 307360, 328147, B23P 108

Patent

active

040728420

ABSTRACT:
A pulse generator for use in forming the erosion pulses of an electro-erosion machine tool comprises means for forming two envelope curve signals representing upper and lower limit levels for the instant level of the output pulse, a comparing device for comparing the actual current level of the output pulse with the envelope curve signals, and a current supply for forming the pulse under the control of a switch which is turned on and off by the comparing means in such a way as to maintain the output pulse current level in the region represented by the space between the envelope curves.

REFERENCES:
patent: 3655937 (1972-04-01), Ullmann et al.
patent: 3683284 (1972-08-01), Mueller
patent: 3731045 (1973-05-01), Ullmann et al.
patent: 3973104 (1976-08-01), Ullmann et al.

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