| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To obtain a method of manufacturing a rotor for electromagnetic clutches, in which the cost is reduced and also weight is reduced easily by making manufacture easy and eliminating the waste of materials. <P>SOLUTION: The base plate for rotors in which an outer peripheral cylindrical part is taken as a belt putting part 4, the central cylindrical part is taken as a bearing member fitting part and an intermediate plate part between the outer peripheral cylindrical part and the central cylindrical part is taken as a clutch part is formed by forming one metallic disk into the outer peripheral cylindrical part and the central cylindrical part by drawing out the outer peripheral part and the central inner peripheral part on the side of one surface by pressing or form rolling. By clamping the base plate for rotors from both sides with a clamper and rotating the plate by pressing a roller die 20 for forming a belt groove against the outer peripheral surface of the outer peripheral cylindrical part and rotating it, the belt groove 21 is formed and the belt putting part 4 is formed. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
