CARBURIZATION METHOD FOR MEMBER HAVING TOOTH PROFILE ON INNER CIRCUMFERENTIAL FACE AND WORKPIECE HOLDING MECHANISM USED FOR THE CARBURIZATION METHOD

摘要

PROBLEM TO BE SOLVED: To improve working efficiency in mounting or removing a workpiece on or from a shaft member when the workpiece is subjected to carburization hardening. SOLUTION: Annular ring members 32 are integrally mounted on the upper part of a journaling member 14 and the outer circumferential diameters of tops 24 of annular projecting parts 34 formed on the outer circumferences of the ring members 32 are made smaller than the inner circumferential diameters of tooth profile sections 24 of a plurality of inner races 16a to 16e inserted onto the journaling member 14. Also, the plurality of the inner races 16a to 16e are disposed so that when the plurality of the inner races 16a to 16e are layered on the journaling member 14a, boundary area 46 of an aperture 20 of the inner race 16a of the uppermost part and the tooth profile section 24 and the position along the height direction of the top 34a of the annular projecting part 34 formed on the outer circumference of the ring member 32 are aligned or approximately aligned. A clearance 48 of a prescribed spacing is formed between the top 34a and the boundary area 46. COPYRIGHT: (C)2006,JPO&NCIPI