| 摘要 |
A clamp pallet ( 2 ) as a reference member is fixed to a table ( 1 ) of a machining center. A tapered positioning hole ( 12 ) is opened in a lower surface of a work pallet ( 3 ) as a movable member. An annular central pillar ( 21 ) is projected upward from the clamp pallet ( 2 ), and an intermediate member ( 22 ) is arranged between the central pillar ( 21 ) and the positioning hole ( 12 ). The intermediate member ( 22 ) is composed of a shuttle member ( 23 ), which is diametrically expandable and contractible and supported on the central pillar ( 21 ) vertically movably, and a tapered cylinder ( 26 ), which is attached to an outer periphery of the shuttle member ( 23 ) and makes a tapering engagement with the positioning hole ( 12 ). The shuttle member ( 23 ) is urged upward by means of an elastic member ( 24 ).
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