| 摘要 |
PCT No. PCT/JP94/00979 Sec. 371 Date Feb. 8, 1995 Sec. 102(e) Date Feb. 8, 1995 PCT Filed Jun. 16, 1994 PCT Pub. No. WO94/29059 PCT Pub. Date Dec. 22, 1994The EDM apparatus for machining a workpiece by electric discharge while supplying dielectric fluid which contains powder to the work gap formed by a tool electrode and the workpiece to be machined includes a cover to protect them against the adherence of the powder that is contained in the dielectric fluid, a fluid feeding device supplying the powder-containing fluid to the work gap during the electric discharge machine process, and, at the same time, also supplying fluid that does not contain any powder to the parts inside the cover.
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