Patent ID: 6532666
Filing Date: 2003-03-18
Classification: B21J,B21K,B23P,B60B,F16C,Y10T

Abstract:
A process for upsetting a hollow deformable end on a spindle that projects through an inner race of an antifriction bearing, with the inner race having a back face beyond which the deformable end is located, said process comprising: rotating the spindle and a forming tool located beyond the spindle; forcing the rotating forming tool and the deformable end of the spindle together; while the force is exerted and the spindle and tool are rotating, decreasing the distance between forming tool and the inner race in a feed phase so that the deformable end transforms into a formed end that is directed outwardly and located opposite the back face of the inner race; thereafter, while the force is applied, maintaining the distance between the forming tool and the inner race essentially constant in a dwell phase; monitoring the force at which the spindle and the forming tool are urged together in the feed and dwell phases; and determining if the force at prescribed intervals meets established criteria for rejection of the spindle and antifriction bearing.