Guiding and stressing an elongated, stretched, renewable electro

Details Guiding and stressing an elongated, stretched, renewable electro Guiding and stressing an elongated, stretched, renewable electro

1978-04-13

1980-12-30

Shaw, C. C.

Electric heating

Metal heating

Cutting or disintegrating

219 69M, 242155R, B23P 112

Patent

active

042425565

ABSTRACT:
To provide constant tension on an electro-erosive electrode machining wire, tape or ribbon stretched in a working path between advancing rollers and pulling rollers, a tension loading arrangement, for example weights, springs, or the like, are applied to the wire to maintain the tension thereof at a constant value. The deflection of the wire, due to elongation thereof as a result of heating, differences in manufacturing technologies and the like, is sensed and fed back to the motors driving the advancing and pulling rotors to maintain the tension, as controlled by the motor torques and speeds at a uniform value.

REFERENCES:
patent: 2306835 (1942-12-01), Tucker et al.
patent: 2605061 (1952-07-01), Howe
patent: 3486713 (1969-12-01), Freiman
patent: 3822374 (1974-07-01), Ullmann et al.
patent: 3912899 (1975-10-01), Lehmann et al.
patent: 4016395 (1977-04-01), Rietzeld

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