To suppress wear of an electrode in a multi-wire electrical discharge machining device.
The multi-wire electrical discharge machining device 100 includes a guide roller set including a plurality of guide rollers 24A-24F arranged with an interval, wires 15 wound in a plurality of turns around the guide roller set with an interval in the longitudinal direction of the respective guide rollers 24A-24F and constituting a plurality of cutting wire parts 26a-26h set apart with each other between a pair of the adjacent guide rollers 24B, 24C, and a feeding block 200 including a plurality of feeding tips 209a, 215a, 209b, 215b for supplying power to the plurality of the cutting wire parts 26a-26h, and machines the workpiece 28 by carrying out electrical discharge between the respective cutting wire parts 26a-26h and the workpiece 28. The feeding tips 209a, 215a, 209b, and 215b are made to be a cylinder of a conductor which is rotatably mounted and around which the wires 15 are wound.
YOSHIKAWA NAOKI
TAWA YASUNOBU
KATO TOMOHISA
NAT INST OF ADVANCED IND SCIEN
Jun Ishida
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