Title:
ASSEMBLING METHOD OF CAM SHAFT
Document Type and Number:
Japanese Patent JP2015137598
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an assembling method of a cam shaft which can rigidly fix a cam piece and a shaft to each other while suppressing the warpage of the shaft in an axial direction.SOLUTION: In an assembling method of a cam shaft which is constituted of a cam piece 30 having a cam crest and a cylindrical columnar hollow shaft 20, the method clearance-fits the shaft 20 into a hole 31 formed at the cam piece 30. After the clearance fit, point-symmetric two points are fused with an axial center of the shaft 20 being an internal peripheral face of the shaft 20 in a region in which the cam piece 30 is clearance-fit as an objective center, and a cross section of the shaft 20 is deformed into an oval shape by utilizing thermal warpage which is generated when fusion parts Y of the fused two points are coagulated. Then, by this ovalization, an external peripheral face of the shaft 20 is made to abut on the hole 31, and fixed.
Inventors:
SUNADA HIRONAO
Application Number:
JP2014009837A
Publication Date:
July 30, 2015
Filing Date:
January 22, 2014
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
F01L1/04; F16H53/02
Attorney, Agent or Firm:
Makoto Onda
Hironobu Onda
Hironobu Onda
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