A method for the hump eldr believes provided and preferred application of the method

摘要

The invention relates to a method for machining workpieces with a non-round or inconstant contour on usual commercial programmable turning machines. According to the invention, the application and combination of a programming, consisting of threading cycles and rising and falling values for the diametral and longitudinal axis or of the gradient, of a pilger step technique and of interlaced machining sequences, have almost unlimited possibilities. Preferred applications of the inventive method include the production of special screw threads on screw-in bodies e.g., on plastic hip cups or bone screws, e.g. with neutral angles or almost any clamping angles or clearance angles of the thread flanks, as well as the production of e.g., inner and outer contours on workpieces for so-called circular wedgings.