基本信息:
- 专利标题： 制造具有重量减轻的锻造孔的曲轴的方法
- 专利标题（英）：Method of manufacturing crankshaft having weight-reducing forged holes
- 申请号：CN201610833749.3 申请日：2016-09-20
- 公开(公告)号：CN107363213A 公开(公告)日：2017-11-21
- 发明人： 金城焕 , 张弼盛 , 李次焕
- 申请人： 现代自动车株式会社
- 申请人地址： 韩国首尔
- 专利权人： 现代自动车株式会社
- 当前专利权人： 现代自动车株式会社
- 当前专利权人地址： 韩国首尔
- 代理机构： 北京尚诚知识产权代理有限公司
- 代理人： 龙淳; 彭益群
- 优先权： 10-2016-0057762 2016.05.11 KR
- 主分类号： B21K1/08
- IPC分类号： B21K1/08 ; B21J5/02 ; B21J5/10
A method of manufacturing a crankshaft having weight-reducing forged holes can achieve lightening and precise forming by additionally including a punching process of using an individual hydraulic press. The method includes steps of: heating a steel bar, performing busting such that the heated steel bar is disposed in a cavity of a mold to be produced as a first intermediate shape of a crankshaft, performing brokering such that the first intermediate shape is produced as a second intermediate shape, performing finishing such that the second intermediate shape is produced as a third intermediate shape, performing trimming such that the third intermediate shape is produced as a complete shape of the crankshaft by cutting portions other than the shape of the crankshaft, and performing punching such that holes are formed in the complete shape of the crankshaft.