| 摘要 |
PCT No. PCT/GB87/00419 Sec. 371 Date Dec. 19, 1988 Sec. 102(e) Date Dec. 19, 1988 PCT Filed Jun. 16, 1987 PCT Pub. No. WO87/07548 PCT Pub. Date Dec. 17, 1987.The tool holder is arranged to receive a tapered tool shank. The collet has a shank engaging surface which, in use, lies substantially on the surface of a notional cone which tapers in the direction of withdrawal of the shank from the tool holder.
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