Metal working – Method of mechanical manufacture – Pulley making
Patent
1989-02-24
1990-03-06
Echols, P. W.
Metal working
Method of mechanical manufacture
Pulley making
B21K 142
Patent
active
049053612
ABSTRACT:
A pulley comprising a circumferential groove which has a non-flat groove surface for increased friction against a belt to be received and a manufacturing method therefor. According to the method a pulley material is forged into a basic pulley configuration which is the shape of the material ready for forming the circumferential groove. The basic configuration comprises a plurality of axial grooves which extend in a generally axial direction over a surface of the pulley in which the circumferential groove is to be formed. The the circumferential groove is rolling-formed in the pulley material. Thus, a non-flat groove surface for a higher friction is provided. Alternatively, the higher friction groove surface may be formed by roughening a sand blasting, shot blasting or chemical surface treatment.
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Morishita Akira
Tanaka Toshinori
Echols P. W.
Mitsubishi Denki & Kabushiki Kaisha
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