ELECTRODISCHARGE WIRE MACHINING AND POWER SUPPLY FOR ELECTRODISCHARGE WIRE MACHINING

摘要

A power supply is provided for electrodischarge wire machining in which high-frequency AC voltage is applied between a wire electrode and a workpiece. A power supply device includes a high-frequency AC oscillator and amplifier circuit (4) and a pulse source (5) for applying high-frequency AC voltage intermittently between a wire electrode (1a) and a workpiece (2). In the electrodischarge wire machining using this power supply, the vibration of the wire electrode (1a) due to electrostatic force between the wire electrode (1a) and the workpiece (2) is suppressed, thus improving the straightness of the machined surface and reducing surface roughness.