| 摘要 |
An electrical discharge machining system including a fixture for the post which allows the post to be mounted and clamped thereto in a precise predetermined position thereon whether the post has a round cross-sectional configuration or a polygonal shape thereto. In a preferred form, the fixture includes a bore for a round shaped post having an indexing pin which seats in a groove formed in an upper surface of the fixture and is clamped therein by clamp members actuated by cam clamp operators. The clamping of the pin in the groove keeps the post rigid and stationary relative to the fixture to provide for improved results when the electrode is subject to machining operations. In addition, because the clamping mechanism herein does away with the previously-described hydraulic clamping device utilized with prior fixtures, there are no hydraulic lines or connections that have to be set up and maintained to provide an easier-to-use fixture for use with the tool holding system.
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