-
公开(公告)号:US06341516B1
公开(公告)日:2002-01-29
申请号:US09308293
申请日:1999-05-12
申请人: Shigeki Narushima , Kenichi Ide , Yasushi Dodo , Toshihiko Obata , Sadakazu Masuda , Shuichi Yamashina , Takashi Yokoyama
发明人: Shigeki Narushima , Kenichi Ide , Yasushi Dodo , Toshihiko Obata , Sadakazu Masuda , Shuichi Yamashina , Takashi Yokoyama
IPC分类号: B21B1318
CPC分类号: B21B39/12 , B21B1/024 , B21B1/42 , B21B13/18 , B21B15/0035 , B21B39/006 , B21B39/04 , B21B39/14 , B21B41/08 , B21B2203/10 , B21B2203/20 , B21J1/04 , B21J7/18
摘要: A material 1 to be shaped is reduced and formed by bringing dies with convex forming surfaces, when viewed from the side of the transfer line of the material 1, close to the transfer line from above and below the material 1, in synchronism with each other, while giving the dies a swinging motion in such a manner that the portions of the forming surfaces of the dies, in contact with the material 1, are transferred from the upstream to the downstream side in the direction of the transfer line.