发明名称 |
Gegen Beschädigung geschützter Bohrer |
摘要 |
A drill according to an exemplary embodiment of the invention comprises a shank from which the drill is driven; a body connected to the shank, the body having a surface; a flute in the body; a cutting edge at a drill point; and a peripheral relief surface which extends outwardly from the surface of the body to an outer circumference of the drill, wherein the peripheral relief surface, for a cross section of the drill perpendicular to a drill axis, intersects the outer circumference at a peripheral point at an edge of the flute. The drill has an improved capacity to withstand a loss of coolant during drilling without severe overheating of the drill or workpiece and with little damage to the drill and workpiece. |
申请公布号 |
DE69805705(D1) |
申请公布日期 |
2002.07.11 |
申请号 |
DE1998605705 |
申请日期 |
1998.07.03 |
申请人 |
GENERAL ELECTRIC CO., SCHENECTADY |
发明人 |
KARAFILLIS, APOSTOLOS PAYLOS;HAYASHI, STEVEN ROBERT |
分类号 |
B23B51/00;B23B51/02;(IPC1-7):B23B51/02 |
主分类号 |
B23B51/00 |
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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