WIRE FEEDING DEVICE, WIRE FORMING MACHINE AND WIRE FEEDING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a wire feeding device, a wire forming machine and a wire feeding method capable of easily adjusting a holding force for wire and capable of suppressing a production amount of an NG product.;SOLUTION: In a wire feeding device 20, an interval between a pair of feeding rollers 18, 19 is adjusted so as to cause a measured crushed amount Dj of wire 90 to correspond to a target crushed amount Dw and a holding force for the wire 90 is brought close to a proper value. Thereby, a production amount of such an NG product that the wire 90 is over-crushed can be suppressed. Further, although the crushed amount of the wire 90 is largely changed by a slight change of the holding force in a plastic deformation region of the wire 90, the wire feeding device 20 adjusts a holding force as a parameter which is slightly changed based on the crushed amount as the parameter which is largely changed and, therefore, the holding force can be easily adjusted to the proper value without over-crushing the wire.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2018,JPO&INPIT