发明名称 |
DISPOSITIVO PER LA PRODUZIONE SENZA ASPORTAZIONE DI TRUCIOLO DI RUOTE DENTATE CONICHE |
摘要 |
A die with bevel gear-forming cavity, a punch and a sleeve-like counter punch are constructed for press-forming cylindrical blanks. The punch has a diameter about equal to the circle defined by the intersection of the pitch cone with the low diameter bottom of the die cavity. The counter punch has a frusto-conical projection reaching in the cavity and is held until the die cavity is filled underneath, whereafter the counter punch retracts at a declining speed to fill the remainder of the cavity by radial flow. |
申请公布号 |
IT1040723(B) |
申请公布日期 |
1979.12.20 |
申请号 |
IT19750050229 |
申请日期 |
1975.06.25 |
申请人 |
KABEL UND METALLWERKE GUTEHOFFNUNGSHUETTE AG |
发明人 |
|
分类号 |
B21J5/02;B21J13/02;B21K1/30;(IPC1-7):21K/ |
主分类号 |
B21J5/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|