Production of cam shaft

Abstract

Abstract PURPOSE:To produce inexpensively an assembled can shaft having good assembling accuracy with high productivity by positioning axially assembling parts by means of spacers removable from a cam shaft to the cam shaft and subjecting the parts to liquid phase sintering thereby joining integrally the parts to the cam shaft. CONSTITUTION:A projection 5 is formed to the inside circumferential surface of a cam lobe 2 and journal 3 consisting of a liquid phase sintering material. On the other hand, a groove 6 mating with said projection 5 is cut to the outside circumference of a cam shaft 1 consisting of a steel pipe and the projection 5 is fitted into the groove 6. The lobe 2 and the journal 3 are slid onto the shaft, by which the lobe and journal are positioned in the rotating direction and are assembled to the shaft 1. A spacer 4 which is a removable semicylindrical or a roof-shaped triangular body consisting of ceramics is interposed to position axially the lobe 2, the journal 3, etc. The assembled parts 2, 3 and the shaft 1 are integrally bound by liquid phase sintering and thereafter the spacer 4 is removed and the sintered and assembled cam shaft is obtd.

Inventors

• 👤 Genkichi Umeba
• 👤 梅葉　源吉
• 👤 Shunsuke Takeguchi
• 👤 俊輔 竹口
• 👤 Takashi Uda
• 👤 隆 宇田

Bibliographic Details