Unit for induction heating and hardening gear teeth

摘要

An induction heating unit is disclosed which is operable to inductively heat and harden teeth on circumferentially extending radially thin flange segments of a gear. The unit includes an inductor conforming in circumferential contour and length to the flange segment and having radially and axially offset conductor leg portions to control heating of the gear teeth during relative axial scanning movement between the gear and inductor so as to prevent distortion of the gear flange. The unit further includes an arrangement for quenching the gear teeth and cooling the end portions of the flange segment during scanning movements.