发明授权
- 专利标题： CHIP BREAKER DRILL BUSHING ASSEMBLY
- 专利标题（中）： 断屑器钻头衬套总成
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申请号： EP96940454.0申请日： 1996-11-07
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公开(公告)号： EP0868241B1公开(公告)日： 2002-02-27
- 发明人: SMITH, David, B.
- 申请人： THE BOEING COMPANY
- 申请人地址： P.O. Box 3707, M.S. 13-08 Seattle, Washington 98124-2207 US
- 专利权人： THE BOEING COMPANY
- 当前专利权人： THE BOEING COMPANY
- 当前专利权人地址： P.O. Box 3707, M.S. 13-08 Seattle, Washington 98124-2207 US
- 代理机构： Bartelds, Erik
- 优先权： US565380 19951130
- 国际公布： WO9719779 19970605
- 主分类号： B23B47/34
- IPC分类号： B23B47/34
摘要：
A chip breaker drill bushing assembly (11) for a fluted drill bit (37) is disclosed. The assembly comprises a drill bushing housing (13) and a sleeve (15). The drill bushing housing (13) includes a body (17) and an outwardly protruding guide shaft (19). The guide shaft has a smooth end (31) for tightly contacting the surface of a work piece (63) to be drilled. The sleeve (15) is located in the body (17) of the housing (13), in alignment with the guide shaft. The end of the sleeve (15) facing the tip (29) of the guide shaft (19) includes a chip breaker (41). The chip breaker (41) includes two spaced-apart teeth (46a, 46b) that are defined by two helical troughs (47a, 47b) that protrude into the sleeve (15). The two helical troughs (47a, 47b) are aligned with two longitudinal apertures (33) in the outwardly protruding guide shaft (19).
公开/授权文献
- EP0868241A1 CHIP BREAKER DRILL BUSHING ASSEMBLY 公开/授权日：1998-10-07
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