Title:
MANUFACTURE OF CAM SHAFT
Document Type and Number:
Japanese Patent JPS57171159
Kind Code:
A
Abstract:
PURPOSE:To reduce weight of a cam shaft and simplify a process of its manufacture, by performing cold forging work of low carbon steel, forming a cam piece and journal piece, brazing the cam and journal pieces to a steel pipe shaft, and then cementing, gradually cooling and processing high-frequency quenching to the cam part and journal part. CONSTITUTION:Low carbon steel is performed cold forging work to prepare a cam piece and journal piece, and these pieces are built in to a steel pipe shaft and applied brazing to prepare a cam shaft rough shaped material. Then the cam shaft rough shaped material is performed cementation treatment by using RX gas as a cementing material. The cam shaft material is gradually cooled, and then finish abrasive work is performed to rich carbonized cam and journal parts to form necessary surface roughness and obtain a cam shaft.
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Inventors:
ARAKAWA TADAOKI
Application Number:
JP5543581A
Publication Date:
October 21, 1982
Filing Date:
April 13, 1981
Export Citation:
Assignee:
TOYOTA MOTOR CO LTD
International Classes:
C23C8/22; B21K1/06; B23K31/02; C21D9/30; F16H53/02; (IPC1-7): B21K1/06; B23K1/00; C21D9/30; C23C11/12; F16H53/00
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