公开(公告)号：US20140215820A1

公开(公告)日：2014-08-07

申请号：US14249676

申请日：2014-04-10

Applicant: OTICS CORPORATION ,  FINE SINTER CO., LTD.

Inventor： Tamotsu YAMAMOTO ,  Eiji ISOGAI ,  Kazumasa KINOSHITA ,  Kunihiro NISHIMURA ,  Hidekazu SATO

IPC: F16H53/02

CPC classification number: F16H53/025 ,  B23P2700/02 ,  Y10T29/49293

Abstract: An inner hole to which a driving shaft is inserted is formed in a cam piece of a camshaft, and a plurality of grooves extending in the insertion direction of the driving shaft are formed in the inner hole. The driving shaft is inserted into the inner hole with the cam piece heated to expand the diameter of the inner hole. By reducing again the diameter of the inner hole by cooling it in this state, an outer circumferential surface of the driving shaft is pressed and raised by the inner hole and enters the groove, by which the cam piece is firmly fixed onto the driving shaft.

Abstract translation: 在凸轮轴的凸轮件中形成有插入有驱动轴的内孔，并且在内孔中形成有沿驱动轴的插入方向延伸的多个槽。 驱动轴插入内孔，凸轮件被加热以扩大内孔的直径。 通过在该状态下通过冷却来再次减小内孔的直径，驱动轴的外周面被内孔按压并升高，并进入槽，凸轮片牢固地固定在驱动轴上。