发明名称 |
Method of manufacturing sprocket segment, and sprocket segment |
摘要 |
A method of manufacturing a sprocket segment that is formed by forging as one of a plurality of circumferentially divided parts of a sprocket having a plurality of teeth arranged on an outer peripheral surface of a circular flange, the method includes: forming a material of the sprocket segment into an initial formed state in an initial forming step; and subjecting the sprocket segment in dies to a finish forming process with a tooth trace direction of the sprocket segment as viewed in cross-section of the sprocket segment being inclined relative to a forging direction of the dies in a finish forming step. |
申请公布号 |
US8904844(B2) |
申请公布日期 |
2014.12.09 |
申请号 |
US201013147843 |
申请日期 |
2010.02.09 |
申请人 |
Komatsu Ltd. |
发明人 |
Kawahara Fumiaki;Wang Tao;Kusada Shohei |
分类号 |
E02F9/02;E02F9/20;B21J5/00;B21J5/02;B21K1/30;B21K23/02;F16H55/12;F16H55/30 |
主分类号 |
E02F9/02 |
代理机构 |
Global IP Counselors, LLP |
代理人 |
Global IP Counselors, LLP |
主权项 |
1. A method of manufacturing a sprocket segment that is formed by forging as one of a plurality of circumferentially divided parts of a sprocket having a plurality of teeth arranged on an outer peripheral surface of a circular flange, the method comprising:
forming a material of the sprocket segment into an initial formed state in an initial forming step; and subjecting the sprocket segment in dies to a finish forming process with a tooth trace direction of the sprocket segment as viewed in cross-section of the sprocket segment being inclined relative to a forging direction of the dies in a finish forming step, one of the dies being mounted to a mount surface and disposed between the mount surface and another of the dies, the finish forming step including forming a burr portion in proximity to a ridgeline of the sprocket segment when forming the sprocket segment by forging, a portion of the burr portion on a mount-side end of the sprocket segment and a portion of the burr portion on a tooth-side end of the sprocket segment being parallel to the mount surface of the dies, the ridgeline being disposed between a radially-facing tooth surface and an axially-facing lateral end surface of the teeth. |
地址 |
Tokyo JP |