多電極放電加工機の開発

抄録

When a number of micro holes are machined in a workpiece, one effective way to reduce machining time is to use small electrode-feeding mechanisms arranged closely to machine simultaneously. An electro-discharge machine with three electrodes is developed combining three pencil-sized electrode-feeding mechanisms using rapid deformations of piezoelectric elements (IDM : Impact Drive Mechanism). The three electrodes are controlled independently by one controller using time sharing system so that the developed electro-discharge machine can machine three micro holes simultaneously. The machining time of three micro holes using the developed electro-discharge machine was as short as that of one micro hole.