发明名称 |
Method of forming internal gear, and internal gear |
摘要 |
At the time for forming an internal gear from a raw material 2 of an internal gear, first, the raw material 2 is externally inserted onto a forming die 3 and fixed to the forming die 3 through a pressing die 4 . Next, a forming roll 5 is moved in a direction as indicated by an arrow B of FIG. 6 while rotating the forming die 3 . By this, the inner peripheral surface of the raw material 3 is pressed against an outer gear part 3 b formed on the outer peripheral surface of the forming die 3 so that an internal gear part 1 c is formed on the inner peripheral surface of the raw material 2 . The rotating direction of the forming die 3 is selected such that the first end part of the outer gear part 3 b located on the front side in the feeding direction of the forming roll 5 is moved ahead in the rotating direction (the direction as indicated by an arrow A of FIG. 6 ) of the second end part located on the rear side in the feeding direction of the forming roll 5.
|
申请公布号 |
US2005166654(A1) |
申请公布日期 |
2005.08.04 |
申请号 |
US20040505351 |
申请日期 |
2004.08.19 |
申请人 |
WADA YUKIO;OKUDA HIROFUMI;NAKAMURA YASUFUMI;MINEGISHI AKINAO |
发明人 |
WADA YUKIO;OKUDA HIROFUMI;NAKAMURA YASUFUMI;MINEGISHI AKINAO |
分类号 |
B21D53/28;B21H5/00;B21H5/02;(IPC1-7):B21D22/16 |
主分类号 |
B21D53/28 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|