专利名称：MANUFACTURE OF TORSION BAR 发明人：YOSHIDA SHICHIE,NAKANO SHOZO 申请号：JP3469989
入党表态发言申请日：19890214
环卫处公开号：JPH02211922A
公开日：
刘佳瑞>徐连新
19900823
专利内容由知识产权出版社提供
我的14岁
就在那一瞬间摘要：PURPOSE:To prevent defects from being generated and to improve the yield by heading a part between the gripping part at the front end and the gripping part at the rear end to obtain plural torsion bars from a cold finished steel bar. CONSTITUTION:The gripping part 11A from the front end 15A of a cold finished steel bar of a fixed diameter, a parallel part 12 and tapered parts 13 are headed. The gripping part 11B and the gripping part 11A following the parallel part 12 are headed at the same time, the length from the gripping part 11A at the front end 15A to the gripping part 11B at the rear end 15B is cut by L to manufacture two or more bars 10 from one cold finished steel bar. By this method, the surface of the bar is free from flaws and the is fine and hardness by forging can be obtained.
在家办厂有什么好项目申请人：TSUKIBOSHI SEISAKUSHO:KK
楚门的世界
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