发明授权
US5918105A Cutting tools for drilling concrete, aggregate, masonry or the like
materials
失效
用于钻井混凝土,骨料,砖石或类似材料的切削工具
- 专利标题: Cutting tools for drilling concrete, aggregate, masonry or the like materials
- 专利标题(中): 用于钻井混凝土,骨料,砖石或类似材料的切削工具
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申请号: US747695申请日: 1996-11-12
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公开(公告)号: US5918105A公开(公告)日: 1999-06-29
- 发明人: Muniswamappa Anjanappa , Stephen R. Crosby , Russell M. Timmons , John D. Williams , Thomas Trevor Bludis , Udo Koehler
- 申请人: Muniswamappa Anjanappa , Stephen R. Crosby , Russell M. Timmons , John D. Williams , Thomas Trevor Bludis , Udo Koehler
- 申请人地址: DE Newark MD Baltimore
- 专利权人: Black & Decker Inc.,University of Maryland Baltimore County
- 当前专利权人: Black & Decker Inc.,University of Maryland Baltimore County
- 当前专利权人地址: DE Newark MD Baltimore
- 主分类号: B21K5/02
- IPC分类号: B21K5/02 ; B23B31/00 ; B23B51/02 ; E21B10/44 ; E21B10/46 ; B22F5/00
摘要:
A cutting tool (500) has a longitudinally extending shaft portion (588) with a chucking part (509) and a cutting head (506). A pressed powder cutting insert (518) with a cutting edge (520) is on the cutting head (506). The cutting edge (520) includes at least one cutting portion. A rake surface (524) is formed adjacent to at least one of the cutting portions (520) with the rake face (524) being at a rake angle from about 0.degree. to 10.degree.. A clearance face (526) is formed adjacent to the at least one cutting portion opposite the rake face (524). The clearance face (526) is at a clearance angle from about 10.degree. to 50.degree.. An edge radius (540) between the rake face (524) and the clearance face (526) is at a radius of from about 0.0015 to about 0.004 inch. The edge radius 540 is formed during pressing of the powder to form the insert, thus, enabling the insert to be directly braised into the cutting head (506).
公开/授权文献
- US5206534A Photocell 公开/授权日:1993-04-27
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