ELECTRO-CHEMICAL DISCHARGE MACHINE AND ELECTRO-CHEMICAL DISCHARGE MACHINING METHOD

摘要

PURPOSE:To suppress a fall-off of abrasive grains to a maximum limit from a machining wheel, by continuously machining a work while dressing a peripheral surface of the conductive wheel by mechanical, electrical and electro-chemical action. CONSTITUTION:The before said dressing power supply ED is connected while supplying predetermined machining fluid to a part between a machining wheel 1, which rotates while machining a work W, and a dressing wheel 6 placed adjacent to or brought into contact with the internal peripheral surface of the machining wheel 1. Here a dressing voltage waveform uses a sinusoidal wave, square wave, pulse wave, saw tooth wave or distorted wave (AC containing higher harmonic) or a resultant waveform compounding these waves. Then a machine generates discharge action, electro-chemical action and mechanically polishing action between the both wheels 1, 6, as a result the machine, removing cut dust of the work W adhering to the peripheral surface of the machining wheel 1, performs dressing.