发明申请
- 专利标题: DRILL
- 专利标题(中): 钻头
-
申请号: US14009403申请日: 2012-04-11
-
公开(公告)号: US20140023448A1公开(公告)日: 2014-01-23
- 发明人: Kazuya Yanagida , Koichiro Naruke
- 申请人: Kazuya Yanagida , Koichiro Naruke
- 申请人地址: JP Tokyo
- 专利权人: MITSUBISHI MATERIALS CORPORATION
- 当前专利权人: MITSUBISHI MATERIALS CORPORATION
- 当前专利权人地址: JP Tokyo
- 优先权: JP2011-091115 20110415
- 国际申请: PCT/JP2012/059864 WO 20120411
- 主分类号: B23B51/00
- IPC分类号: B23B51/00
摘要:
A drill comprises a drill body that is rotatable on an axis. Chip evacuating flutes, which are open on front flanks of the drill body and are extended rearwards, are formed in a periphery of the drill body on its front side. Cutting edges are formed along ridge lines where the front flanks intersect with wall surfaces of the chip evacuating flutes facing a drill rotating direction. At least first and second front flanks are formed on the front flanks in order of their locations in the drill rotating direction from its leading side to its trailing side. A clearance angle of the second front flank is greater than that of the first front flank. Intersection lines of the first and second front flanks cross the cutting edges.
公开/授权文献
- US09352399B2 Drill 公开/授权日:2016-05-31
信息查询