发明申请
- 专利标题： DRILL AND PRODUCTION METHOD FOR A DRILL
- 专利标题（中）： 钻机钻头和生产方法
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申请号： US14353517申请日： 2012-07-18
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公开(公告)号： US20140328641A1公开(公告)日： 2014-11-06
- 发明人: Carsten Peters , Guenther Domani , Marcel Roessner , Josef Starkmann
- 申请人： Carsten Peters , Guenther Domani , Marcel Roessner , Josef Starkmann
- 申请人地址： LI Schaan
- 专利权人： Hilti Aktiengesellschaft
- 当前专利权人： Hilti Aktiengesellschaft
- 当前专利权人地址： LI Schaan
- 优先权： DEDE102011085187.9 20111025
- 国际申请： PCT/EP2012/064078 WO 20120718
- 主分类号： B23B51/02
- IPC分类号： B23B51/02 ; E21B10/44 ; B28D1/14 ; B23P15/32
摘要：
A drill bit has a shank (4) between a drilling head (3) and an insertable end (5) along an axis (2). The shank (4) is provided with at least two first flutes (34) that run along the axis (2) and at least a second helical flute (31). The first flutes (34) and the second flute (31) cross each other at several crossings (41).The width (35) of the first flute 34 steadily decreases over the area between two adjacent crossings (41) from one of the crossings (41) all the way to the narrowest place (42) and subsequently steadily increases all the way to the other crossing (41).
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