Toyota Jidosha Kogyo Kabushiki Kaisha

Akio Takahashi

Hitoshi Nakamura

Chiaki Tsumuki

Juro Ozaki

Process and device for manufacturing cam shaft characterized in that axial grooves are cut on a cam shaft, while projections with a profile matching said axial grooves and slightly larger than said axial grooves are provided on the fitting surface of pieces to be assembled to said cam shaft, whereby said projections of said pieces are fitted into said grooves of said cam shaft.

Device for manufacture of assembled cam shaft

Process for manufacturing cam shaft characterized in that axial grooves are cut on a cam shaft, while projections with a profile matching the axial grooves and slightly larger than the axial grooves are provided on the fitting surface of pieces to be assembled to the cam shaft, whereby said projections of the pieces are fitted into the grooves of said cam shaft.

Process for manufacture of assembled cam shaft

Method of obtaining a metallurgically firm joint between a shaft and its fitting member by assembling on the shaft a fitting member molded of a wear-resistant iron base sinterable alloy which yields a liquid phase in sintering, or by preliminarily sintering such an alloy at a temperature not yielding a liquid phase, and thereafter sintering the assembly at a temperature causing a precipitation of liquid phase, whereby the liquid phase of the fitting member is caused to diffuse and penetrate into the shaft with shrinkage of the sintered part.

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Toyota, Japan

Akio Takahashi