Patent ID: 6698741
Filing Date: 2004-03-02
Classification: B23Q

Abstract:
A workpiece support device comprising:a body including a base portion adapted for mounting on a surface; a support member mounted on the body so as to be extendable outward relative to the body and away from the base portion, and retractable inward relative to the body and toward the base portion, the support member having an outer end adapted for supporting a workpiece and having an inner end; a cam member having a camming surface, the cam member mounted on the body so as to be movable in first and second directions, the movement of the cam member in the first direction causing the camming surface to drivingly engage the inner end of the support member and force the support member to extend outward relative to the body, and the movement of the cam member in the second direction allowing the support member to retract inward relative to the body; and a hydraulic cylinder actuator having an extendable piston which when turned on forces the cam member in the first direction, thereby forcing the support member to extend outward relative to the body and which is operative to apply a continuous outward pressure against the workpiece for as long as said hydraulic cylinder actuator is turned on to thereby counter a downward pressure applied by a machining tool to thereby reduce the occurrence of vibration during machining of the workpiece.