Patent ID: 7021615
Filing Date: 2006-04-04
Classification: B23Q,F16B

Abstract:
1. A clamp device for fixing an object to be fixed to a base body, the object being either a work pallet for installing a workpiece to be machined, or a die, said clamp device comprising: a ring-shaped bush fixed to the abject to be fixed and provided with a plurality of partial sphere-shaped engaging recess sections, said recess sections being circumferentially disposed about said bush in a ring shape with substantially equal circumferential spacing between each of said recess sections; a clamp mechanism comprising a holding body having a tubular holding section capable of being inserted into said bush, a plurality of steel balls held movably in the radial direction in the holding section so as to face said plurality of engaging recess sections, and a clamp output member inserted movably into an axle hole of the holding section, the plurality of steel balls being capable of engaging respectively with the plurality of engaging recess sections; clamp operating means for moving said clamp output member in the direction of the center axis thereof, thereby causing the plurality of steel balls to engage respectively with the plurality of engaging recess sections; and clamp releasing means for moving said clamp output member in the direction of the center axis thereof, thereby allowing the plurality of steel balls to retreat from the plurality of engaging recess sections.