초록 ▼

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

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.

대표청구항 ▼

A wire state of use indication apparatus for a traveling-wire electroerosion cutting machine having: a continuous electrode wire stored in a wire storage means for extending continuously between the storage means and a wire takeup means through a cutting zone along a predetermined path of wire trave

A wire state of use indication apparatus for a traveling-wire electroerosion cutting machine having: a continuous electrode wire stored in a wire storage means for extending continuously between the storage means and a wire takeup means through a cutting zone along a predetermined path of wire travel, wire traction means for continuously withdrawing the electrode wire from the wire storage means to feed it to travel through the cutting zone and eventually to be collected onto the wire takeup means in an electroerosion cutting operation, wire braking means for maintaining taut the electrode wire traveling between the wire storage means and the wire takeup means along said path, and a plurality of rollers disposed in said path of wire travel for rotating with the electrode wire traveling in bearing contact therewith in the electroerosion cutting operation, the apparatus comprising: means (a) responsive to the rotation of one of said rollers and including means (a1) for producing a sensing signal representing a cumulative amount of the electrode wire which has been withdrawn from said storage means substantially at every given instant of time during said cutting operation since the commencement thereof; means (b) for having an input signal set therein generally representing an amount of the electrode wire stored in said storage means immediately prior to the commencement of said cutting operation; means (c) connected to means (a) and (b) and including means (cl) for processing said sensing signal with said input signal to produce an output signal representing an amount of the electrode wire remaining in said storage means at said given instant of time; and means (d) for displaying, substantially without delay at said instant of time, said output signal in numerical form representing said remaining amount of the electrode wire.