发明申请
- 专利标题: MULTI-PIECE TWIST DRILL HEAD AND TWIST DRILL INCLUDING THE SAME
- 专利标题(中): 多层钻头和双列钻头,包括其中
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申请号: US13179662申请日: 2011-07-11
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公开(公告)号: US20130017028A1公开(公告)日: 2013-01-17
- 发明人: X. Daniel Fang , Jean-Luc Dufour , David J. Wills
- 申请人: X. Daniel Fang , Jean-Luc Dufour , David J. Wills
- 申请人地址: US PA Pittsburgh
- 专利权人: TDY Industries, Inc.
- 当前专利权人: TDY Industries, Inc.
- 当前专利权人地址: US PA Pittsburgh
- 主分类号: B23B51/02
- IPC分类号: B23B51/02 ; B23B27/18 ; B23B27/20 ; B23B27/16
摘要:
One non-limiting aspect of the present disclosure is directed to a multi-piece twist drill head. The multi-piece twist drill head includes a core piece formed from a first hard material, and a peripheral piece formed from a second hard material. The core piece and peripheral piece each comprise a cutting edge and are adapted to mate to provide a central region and a peripheral region, respectively, of the multi-piece twist drill head. A twist drill including the multi-piece twist drill head is also disclosed.
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