WORK SUPPORTING TOOL FOR HIGH FREQUENCY INDUCTION HARDENING

摘要

PROBLEM TO BE SOLVED: To restrain the strain of a work in the case of hardening the thin annular work by induction-heating from the outside. SOLUTION: A plurality of movable heads 24 movable in a radial direction are arranged radially on a base member 20. A spring 50 for energizing the movable heads 24 outwards in the radial direction is disposed on the center part of the base member 20, and the compression force of the spring 50 is transmitted to the movable heads 24 through a slide ring 40 and links 44. The inner surface of the work 10 is pushed to the outside at several positions in the peripheral direction with the movable heads 24 to restrain the strain of the work 10.