Patent ID: 9132469
Filing Date: 2015-09-15
Classification: B21D,B21J,B21K,F16C,F16D,Y10T

Abstract:
1. A method of forming, by plastic deformation, a frontal toothing on an inner ring of a wheel hub having an axis of rotation, comprising the steps of: forming the inner ring of the wheel hub by fitting an insert onto a first end of a spindle; axially blocking the insert on the spindle by plastically deforming the first end of the spindle to form an upset collar on the spindle, the upset collar having a first axial side overlying an axial end of the insert and a second axial side opposite the insert; and impressing the frontal toothing onto the second axial side of the upset collar, wherein the step of impressing the frontal toothing onto the second axial side of the upset collar is carried out only after the step of forming the upset collar, sequentially after the end of the step of forming the upset collar; and wherein in combination, the step of impressing the frontal toothing is carried out by axially impressing, in sequence, one or more axially sliding, guided knives onto the upset collar, and wherein the one or more knives are held arranged in a crown, each of the one or more knives having a head shaped as a circular crown sector arranged immediately adjacent to one another and wherein the one or more knives are guided independently of one another, parallel to the axis of rotation of the wheel hub.