公开(公告)号：US20180178343A1

公开(公告)日：2018-06-28

申请号：US15903556

申请日：2018-02-23

Applicant: NTN CORPORATION

Inventor： Jun HIRADE ,  Shuichi KOMATSU

IPC: B24B5/307 ,  F16C3/02 ,  F16C17/10 ,  B24B5/04 ,  F16C33/14

CPC classification number: B24B5/307 ,  B24B5/04 ,  F16C3/02 ,  F16C17/107 ,  F16C33/14 ,  F16C2220/70 ,  F16C2226/10

Abstract: Grinding is performed on an outer peripheral surface of a shaft member while rotationally driving the shaft member under a state in which both end surfaces of the shaft member are sandwiched between a pair of support portions. A convex surface is formed on one axial end surface of the shaft member or an end surface of one of the pair of support portions, and a flat surface is formed on the other of the one axial end surface of the shaft member and the end surface of the one of the pair of support portions. The flat surface and an apex of the convex surface are brought into contact with each other to support one axial end portion of the shaft member.