发明名称 |
CUTTING TAP AND METHOD OF MAKING A CUTTING TAP |
摘要 |
<p>A method of making a cutting tap includes the steps of: grinding a blank to form a threaded body portion at an axially forward end of the cutting tap, grinding one or more flutes in the threaded body portion to form cutting edges; grinding the threaded body portion to form a first cutting thread and a second cutting thread, the first cutting thread at a first distance from the axially forward end of the cutting tap, and the second cutting thread at a second distance from the axially forward end of the cutting tap; and grinding a chamfer in the threaded body portion such that a thickness of a section of material removed from the second cutting thread is smaller than a thickness of a section of material removed from the first cutting thread during a tapping operation.</p> |
申请公布号 |
EP2346637(A2) |
申请公布日期 |
2011.07.27 |
申请号 |
EP20090821013 |
申请日期 |
2009.10.05 |
申请人 |
KENNAMETAL INC. |
发明人 |
HENDERER, WILLARD, E.;GEORGE, STEPHEN, M.;VOLOKH, VLADIMIR, D. |
分类号 |
B23G5/06;B23P15/52;B24B3/18;B24B19/04 |
主分类号 |
B23G5/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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