Invention Grant
- Patent Title: Multi-piece twist drill head and twist drill including the same
- Patent Title (中): 多片麻花钻头和麻花钻包括相同的
-
Application No.: US13179662Application Date: 2011-07-11
-
Publication No.: US08926237B2Publication Date: 2015-01-06
- Inventor: X. Daniel Fang , Jean-Luc Dufour , David J. Wills
- Applicant: X. Daniel Fang , Jean-Luc Dufour , David J. Wills
- Applicant Address: US PA Latrobe
- Assignee: Kennametal Inc.
- Current Assignee: Kennametal Inc.
- Current Assignee Address: US PA Latrobe
- Agent Larry R. Meenan, Esq.
- Main IPC: B23B51/02
- IPC: B23B51/02 ; B23B27/16

Abstract:
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.
Public/Granted literature
- US20130017028A1 MULTI-PIECE TWIST DRILL HEAD AND TWIST DRILL INCLUDING THE SAME Public/Granted day:2013-01-17
Information query