TEST PIECE HOLDING JIG FOR FRICTION/WEAR TESTING MACHINE

摘要

PROBLEM TO BE SOLVED: To enable accurately measuring of a friction coefficient and the degree of wear even when waviness and inclination exist on a sliding surface of a test piece and a high sliding torque higher than expected is generated. ;SOLUTION: In this jig 1, a body part 2 is mounted on a pressurization shaft 35 while a cylindrical body 6 is mounted on the body part 2 and a receiving part 10 is mounted freely oscillatably on the cylindrical body 6 through a spherical body 13 to hold the receiving part 10 freely oscillating with a pressing part 30. A test piece 23 is mounted on the surface opposite to the cylindrical body 6 of the receiving part 10. The center of the spherical body 13 is located at the center of gravity position of the receiving part 10 or at a lower position than it in a state where the test piece 23 is mounted thereon. The test piece 23 is oscillated through the receiving part 10 and the spherical body 13 so that waviness or the like of the sliding surface of the test piece 23 is absorbed. Since the center of the spherical body 13 is located at the center of gravity position of the receiving part 10 or at a lower position in a state where the test piece 23 is mounted, a load of the pressurization shaft 35 can be accurately transmitted to the sliding surface.;COPYRIGHT: (C)1999,JPO