发明名称 |
Cutter elements for hollow drill bit |
摘要 |
A hollow drill bit is formed of an axially extending tubularly-shaped support member (1) with cutter elements (2) inserted into the leading end (1a) of the support member. Each cutter member (2) has a radially outer surface (2a) and a radially inner surface (2b) with channels (2c, 2d) in each surface inclined relative to the axis of the support member (1). The channels (2c,2d) carry a flowable cooling agent to the leading end of the drill bit, and remove drillings produced by the bit from the leading end.
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申请公布号 |
US4915182(A) |
申请公布日期 |
1990.04.10 |
申请号 |
US19890374362 |
申请日期 |
1989.06.30 |
申请人 |
HILTI AKTIENGESELLSCHAFT |
发明人 |
MAGYARI, EUGEN;RITT, WALTER |
分类号 |
B28D1/04;E21B10/44;E21B10/48 |
主分类号 |
B28D1/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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