公开(公告)号：US5115663A

公开(公告)日：1992-05-26

申请号：US616928

申请日：1990-11-21

申请人： Shyoichi Ando ,  Shuichi Yamane ,  Yoshihisa Doi ,  Hisayuki Sakurai ,  Haruo Meguro

发明人： Shyoichi Ando ,  Shuichi Yamane ,  Yoshihisa Doi ,  Hisayuki Sakurai ,  Haruo Meguro

IPC分类号： B21K1/08 ,  F16C3/06

CPC分类号： F16C3/06 ,  B21K1/08 ,  Y10S72/713 ,  Y10T29/49286

摘要： A shaped metallic article such as a crankshaft is produced from a hollow pipe which is commercially available. The hollow pipe, which has a predetermined wall thickness, is squeezed into a hollow blank pipe having a predetermined shape and wall thickness. A region of the hollow blank pipe is then heated, and the heated region is upset and bent into a crankshaft, for example. The hollow blank pipe is upset and bent by dies positioned one on each side of the gripped portion of the blank and moving toward each other, and also by punches. After the crankshaft is forged, one of the punches is released from the crankshaft before the dies are separated therefrom.

摘要翻译： 诸如曲轴的成形金属制品由市售的空心管制成。 具有预定壁厚的中空管被挤压成具有预定形状和壁厚的空心管坯。 然后加热空心空管的区域，例如，加热区域变镦弯曲成曲轴。 中空的坯管由于位于坯料夹持部分的每一侧上并且彼此相对移动并且还通过冲压而被模具弯曲并弯曲。 在曲轴被锻造之后，在模具被分离之前，其中一个冲头从曲轴上释放。