HOLDING APPARATUS, HOLDING METHOD THEREOF, WIRE ELECTRICAL DISCHARGE MACHINING APPARATUS, AND MACHINING METHOD THEREOF

摘要

A holding apparatus, which is used in electrical discharge machining for cutting a workpiece into slices at intervals of wires arranged in parallel to each other, includes: a holding unit for holding the workpiece so as to prevent the workpiece from falling from the holding apparatus; and an energization unit for energizing the workpiece so as to pass current through the workpiece. The holding unit is disposed outside a place at which the wires and the holding unit interfere with each other. The energization unit is disposed at a place at which the cutting of the workpiece into slices by the wires ends. A portion of the energization unit, which is brought into contact with the workpiece at the place at which the cutting of the workpiece into slices ends, has a surface shape that is prevented from conforming to a machining surface of the workpiece.

主权项

1. A holding apparatus, which is used in electrical discharge machining for cutting a workpiece into slices at intervals of wires arranged in parallel to each other, the holding apparatus comprising:
a holding unit arranged to hold the workpiece so as to prevent the workpiece from falling from the holding apparatus; and an energization unit arranged to energize the workpiece so as to pass current through the workpiece, wherein: the holding unit is disposed outside a place at which the wires and the holding unit interfere with each other; the energization unit is disposed at a place at which the cutting of the workpiece into slices by the wires ends; and a portion of the energization unit, which is brought into contact with the workpiece at the place at which the cutting of the workpiece into slices ends, has a surface shape that is prevented from conforming to a machining surface of the workpiece which is cut into slices.