Daido Metal Company Ltd.

Mitsuharu Sahashi

Takayuki Shibayama

Hideo Ishikawa

Satoshi Imai

Nobutaka Hiramatsu

Mikio Suzuki

Yutaka Okamoto

There is provided a method of working a plain bearing and a working apparatus of the plain bearing, which make it easy to perform working by forming a plurality of inclined surfaces of different angles in portions on both sides of the inner peripheral surface of the bearing alloy metal of the plain bearing in the axial direction thereof. In the working method and apparatus, a working holder is provided which has a groove extending on the inner peripheral surface in the peripheral direction and portions on both sides of the groove in the transverse direction formed in step-like shape, a half bearing is housed in the working holder and both ends of the half bearing in the peripheral direction are pressed by use of pressing means Then, the half bearing undergoes plastic deformation so as to be fitted into the groove and both sides of the half bearing in the axial direction thereof come into abutment with the edges of the step-like portions and are deformed in a polygonal line form. In this state, both ends of the half bearing in the axial direction thereof are cut along one cylindrical surface by use of a broach As a result, two inclined surfaces of different angles are continuously formed in the portions of both sides of the bearing alloy metal of the half bearing in the axial direction thereof.

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Nagoya, Japan

Mitsuharu Sahashi