Electric heating – Metal heating – Cutting or disintegrating
Patent
1983-06-07
1986-04-08
Shaw, Clifford C.
Electric heating
Metal heating
Cutting or disintegrating
2041292, 204225, 219 69C, 242 57, B23H 702
Patent
active
045815143
ABSTRACT:
A wire state of use indication apparatus for use with a traveling-wire electroerosion cutting machine is disclosed in which a sensing unit instantaneously responds to the rotation of a roller disposed in the wire travel path and rotated with the electrode wire travelling in bearing contact with the roller. The number of the rotations is counted to produce a sensing signal which represents the cumulative number of rotations of the roller a number which in turn represents the amount of the electrode wire which has been drawn out of the wire storage rool by a given time instant during a given cutting operation. A processing circuit is provided to process the sensing signal with an input setting signal representing the amount of the electrode wire stored in the reel prior to the commencement of the cutting operation to produce an output signal which represents the amount of the electrode wire remaining in the reel at that time instant. The sensing unit may also provide a further sensing signal representing the instantaneous rate of rotation of the roller which rate in turn represents the instantaneous rate of drawing the wire out of the reel.
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Dubno Herbert
Evans Geoffrey S.
Inoue-Japax Research Incorporated
Ross Karl F.
Shaw Clifford C.
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