发明授权
- 专利标题： Machine tool with fault detection
- 专利标题（中）： 机床具有故障检测功能
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申请号： US859166申请日： 1997-05-20
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公开(公告)号： US5895177A公开(公告)日： 1999-04-20
- 发明人: Masayuki Iwai , Katsunori Tsutsui
- 申请人： Masayuki Iwai , Katsunori Tsutsui
- 申请人地址： JPX Aichi-ken
- 专利权人： Brother Kogyo Kabushiki Kaisha
- 当前专利权人： Brother Kogyo Kabushiki Kaisha
- 当前专利权人地址： JPX Aichi-ken
- 优先权： JPX8-125008 19960520
- 主分类号： B23Q15/013
- IPC分类号： B23Q15/013 ; B23B49/00 ; B23Q17/09 ; G05B19/18 ; G05B19/406 ; B23B35/00
摘要：
A machine tool includes a spindle having a cutting tool for cutting a workpiece. For fault detection, a control unit of the machine tool detects a value representing a torque applied on the spindle while the spindle is stopped in a state the cutting tool is engaged with the workpiece. The control unit further compares the detected value (representing a torque) with a predetermined threshold thereby to determine that a fault has occurs. Since the detection of the value representing a torque is performed while the spindle is stopped, the detection is free from the effects of acceleration or deceleration of the spindle.
公开/授权文献
- US4687579A Sintered composite medium and filter 公开/授权日：1987-08-18