发明名称 |
DEEP HOLE DRILLING APPARATUS |
摘要 |
<p>A deep-hole drilling apparatus capable of preventing a tool mark from growing is provided. The deep-hole drilling apparatus provided for this purpose comprises: a tool (12) that is rotationally driven to drill a deep hole (Wa) in a work (W); an acceleration meter (19) that detects vibration of the tool (12) as the acceleration during deep hole processing; a monitoring apparatus (20) which performs frequency analysis on the acceleration detected by the acceleration meter (19) and which determines that a tool mark is produced in the deep hole (Wa) when the overall value of the whirling frequency and the bending natural frequency within a frequency range not including the torsional natural frequency on torsional vibration, constantly produced during the deep hole processing, exceeds a predetermined threshold (±) ; and an NC apparatus (18) that controls both revolution and feeding speed of the tool (12) on the basis of the determination made by the monitoring apparatus (20).</p> |
申请公布号 |
EP2033729(A4) |
申请公布日期 |
2011.05.11 |
申请号 |
EP20070767541 |
申请日期 |
2007.06.26 |
申请人 |
MITSUBISHI HEAVY INDUSTRIES, LTD. |
发明人 |
KAWASHITA, RIMPEI;HIROTA, KAZUO;KAGUCHI, HITOSHI;KASUBATA, YOSHITAKE;KAMBE, AKIO |
分类号 |
B23B49/00;B23B41/02;B23Q15/12;B23Q17/12;G05B19/416 |
主分类号 |
B23B49/00 |
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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