| 发明名称 |
GRINDING METHOD FOR PUNCH HEAD |
| 摘要 |
<p>The grinding method improves accuracy in punching and extends the punch life longer. The grinding method is that the punch (2) with rotation is moved in right angle to a rotating way of grinding stone (1), and the punch head (3) is grinded by contact of surface (4) of grinding stone (1).</p> |
| 申请公布号 |
KR910005424(B1) |
申请公布日期 |
1991.07.29 |
| 申请号 |
KR19890016045 |
申请日期 |
1989.11.06 |
| 申请人 |
SAM SUNG ELECTRON DEVICES CO. |
发明人 |
PARK JANG-SOO |
| 分类号 |
B24B5/00;B23B1/00;B24B1/00;(IPC1-7):B24B1/00 |
主分类号 |
B24B5/00 |
| 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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