发明名称 |
Device for detecting tool abnormality |
摘要 |
When a drill is overloaded, while cutting a hole in a workpiece, a torque limiter disconnects the drill from a main spindle. As the drill is disconnected from the main spindle, the torque limiter generates high-level elastic waves. The elastic waves are converted by a transducer into a voltage signal. The level of the voltage signal is compared with a threshold value.
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申请公布号 |
US4478538(A) |
申请公布日期 |
1984.10.23 |
申请号 |
US19820426244 |
申请日期 |
1982.09.28 |
申请人 |
KAKINO, YOSHIAKI;NF CIRCUIT DESIGN BLOCK CO., LTD.;SHOWA TOOL CO., LTD. |
发明人 |
KAKINO, YOSHIAKI |
分类号 |
B23B47/24;B23Q15/12;B23Q17/09;B23Q17/12;G01N3/58;G01N29/14;(IPC1-7):G01N3/58;G08B21/00;B23B49/00 |
主分类号 |
B23B47/24 |
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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