Hardening cams of camshaft by inductive heating while rotating shaft, using inductor radially guided over cams in dependence on cam profile to ensure even hardening depth

摘要

In the inductive hardening of cams (2) of a camshaft (1) by heating with an inductor (7) while rotating the shaft about its longitudinal axis, the inductor (a) generates a local heating zone in the form of strips extending over at least part of the width of the cam and (b) is guided over the cams in the radial direction of the shaft in dependence on the cam profile during rotation of the shaft. An independent claim is included for corresponding apparatus, comprising an induction hardening device with a current-supplied inductor (7) and a device for rotating the shaft about its longitudinal axis, in which a readjusting device (11) is included for guiding the inductor over the cams in the radial direction of the shaft in dependence on the cam profile during rotation of the shaft.