发明名称 |
DRILLING AND END-MILLING TOOL |
摘要 |
A drill bit the point of which has two or more outer cutting edges and is formed with a V-shaped notch. The V-shaped notch has its center lying on the axis of rotation of the drill bit and opens in the direction of feed of the tool. The V-shaped notch defines inner cutting edges terminating in respective outer cutting edges. |
申请公布号 |
GB2131726(B) |
申请公布日期 |
1987.02.18 |
申请号 |
GB19830028788 |
申请日期 |
1983.10.27 |
申请人 |
* NIPPON OIL & FATS CO LTD |
发明人 |
MASATADA * ARAKI |
分类号 |
B23B51/02;(IPC1-7):B23B51/02;B23C5/02 |
主分类号 |
B23B51/02 |
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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