Title:
MANUFACTURE OF CAMSHAFT
Document Type and Number:
Japanese Patent JPH03189308
Kind Code:
A
Abstract:
PURPOSE:To prevent any fretting abrasion from occurring between the inner circumferential surface of a cam member and the outer circumferential surface of a shaft member by carburizing a camshaft blank after interposing a brazing material between both these surfaces and fitting them together. CONSTITUTION:A cam member 1, having a hollow part 1a piercing through in the axial direction is fitted in an outer circumference of a pipe-make shaft member 2 after interposing a brazing material 3 between an inner circumferential surface of the cam member 1 and an outer circumferential surface of the shaft member 2. Then, both side ends 1c in the axial direction of the camshaft 1 and the shaft member 2 are welded together and thereby a camshaft blank 5 is secured, and then this blank is carburized. With this cementation, the brazing material 3 is melted by heat at time of carburization and diffused in the axial direction, thus the inner circumferential surface of the cam member 1 and the outer circumferential surface of the shaft member 2 are joined together by means of brazing. Therefore any fretting abrasion between the inner circumferential surface of the cam member 1 and the outer circumferential surface of the shaft member 2 is preventable.
Inventors:
NOMURA SEIJI
MIWA YOSHIHISA
SHIBATA SHINYA
HANAKAWA KATSUNORI
MIWA YOSHIHISA
SHIBATA SHINYA
HANAKAWA KATSUNORI
Application Number:
JP32934289A
Publication Date:
August 19, 1991
Filing Date:
December 18, 1989
Export Citation:
Assignee:
MAZDA MOTOR
International Classes:
F01L1/04; B23K1/00; B23K31/02; F16H53/02; (IPC1-7): B23K1/00; B23K31/02; F01L1/04; F16H53/02
Attorney, Agent or Firm:
Hiroshi Maeda (2 outside)