Patent ID: 6105951
Filing Date: 2000-08-22
Classification: B23Q,Y10S

Abstract:
A work positioning jig for machine tools which is to be attached to a work fixing member of the machine tool with use of a recessed portion formed in a work holding surface of the fixing member to position work in place, the work positioning jig being characterized in that the jig comprises a jig body having a positioning portion to be brought into contact with the work and a tapered pressing portion fixedly provided at one end of the positioning portion and to be inserted into the recessed portion, a pin extending through the jig body and movable relative to the jig body longitudinally thereof, a brace member attached to the pin at an end portion thereof projecting beyond the pressing portion so as to fit over the pressing portion, movable relative to the jig body and to be fitted into the recessed portion, and means for biasing the pin in a direction opposite to the pressing portion with respect to the jig body, the pin being biased by the biasing means to bring one end of the positioning portion of the jig body adjacent to the pressing portion into face-to-face contact with the work holding surface while causing the pressing portion to expand the brace member into pressing contact with faces of the recessed portion perpendicular to the work holding surface.