Patent ID: 7484296
Filing Date: 2009-02-03
Classification: B23P,F01L,F16D,F16H,Y10T

Abstract:
1. A method for producing a camshaft having a shaft with at least one annular cam, comprising: producing one or more cams from one or more profile strips, respectively, each said strip having opposed free ends, by subjecting each said strip to a first forming step that provides a bent strip with an elevation, then subjecting said bent strip to a second forming step, wherein said second forming step provides the impression of an indentation and transports material outward in an axial direction in a region of the elevation of the cam and heaps up the material, and then subjecting said bent strip to a third forming step such that the finished cam has an annular form and can enclose the shaft with an angle of enclosure of 360°, and subsequently welding together the free ends; sliding said at least one cam with an annular form onto the shaft; and fastening said at least one cam on the shaft at a predefined location and in a predefined alignment, the cams being positively and/or non-positively connected to the shaft.