PRESS OPERATION VERIFICATION SYSTEM

摘要

A system for verifying the quality of a pressing operation of a press-fit pa rt onto a receiving portion of a receiving assembly. The system is applicable t o the installation of a bearing cup onto a shaft, or a valve seat into a cylinder head. A probe measures a predetermined dimension of the press-fit part to establish a first measurement value. In the case of a valve seat installed a receiving pocket of a cylinder head, a measuring probe is insert ed into the receiving pocket of the cylinder head to measure its depth. The dep th is recorded as a second measurement value. The valve seat is then pressed in to the pocket, and the residual depth is measured to determine the distance between the outermost surface of the pressed in valve seat and the outer surface of the receiving pocket. A computation compares the depth of the pocket against the thickness of the valve seat to determine a difference whi ch is then compared to the residual depth.