发明名称 Multi-purpose drilling tool
摘要 The present invention relates to a multi-purpose drilling tool with a boring head, a drill twist connected thereto and a downstream clamping shank, a cutting element ( 1 ) being provided on the working side of the boring head. The cutting element ( 1 ) has a face ( 9, 24 ) with a rake angle (gamma) having a value of gamma>=0° b, the cutting element ( 1 ) having a flank ( 10, 13 ) with a lip clearance angle (alpha) having a value of 5°<=alpha<=15° and, in particular, alpha≈10°.
申请公布号 US7401667(B2) 申请公布日期 2008.07.22
申请号 US20050558962 申请日期 2005.12.01
申请人 ROBERT BOSCH GMBH 发明人 DUSCHA HELMUT;HAUSSMANN AUGUST
分类号 E21B10/36;B23B51/02 主分类号 E21B10/36
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