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公开(公告)号：EP1153705B1
公开(公告)日：2004-07-28
申请号：EP01110131.8
申请日：2001-05-03
IPC分类号： B23Q3/155 , G05B19/406 , G01M13/04 , B23Q5/34
CPC分类号： B23Q3/1554 , B23Q5/341 , B23Q2003/155428 , B23Q2003/155439 , G05B2219/42328 , G05B2219/50186 , Y10T483/136 , Y10T483/1755 , Y10T483/176 , Y10T483/1767
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公开(公告)号：EP1153705A3
公开(公告)日：2002-09-11
申请号：EP01110131.8
申请日：2001-05-03
IPC分类号： B23Q3/155 , G05B19/406 , G01M13/04 , B23Q5/34
CPC分类号： B23Q3/1554 , B23Q5/341 , B23Q2003/155428 , B23Q2003/155439 , G05B2219/42328 , G05B2219/50186 , Y10T483/136 , Y10T483/1755 , Y10T483/176 , Y10T483/1767
摘要： The present invention provides an automatic tool changer which is adapted to detect the end of the service life of a bearing of a cam follower for systematic replacement of the bearing. The automatic tool changer comprises: a tool changer mechanism (26) including a rotation shaft, a changer arm fixed to the rotation shaft, a cam follower attached to the rotation shaft and having an engagement roller rotatably supported by a bearing, a cam engaged with the engagement roller of the cam follower, and driving means for driving the cam; and a controlling section (57) for controlling an operation of the tool changer mechanism (26). The tool changer further comprises a service life end detecting section (9) for counting the number of times of the operation performed by the tool changer mechanism (26) and judging whether or not the count of the number reaches a reference operation number serving as a basis for the detection of the end of the service life of the bearing. With this arrangement, maintenance can systematically be carried out by detecting the end of the service life of the bearing of the cam follower.
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公开(公告)号：EP1153705A2
公开(公告)日：2001-11-14
申请号：EP01110131.8
申请日：2001-05-03
IPC分类号： B23Q3/155 , G05B19/406
CPC分类号： B23Q3/1554 , B23Q5/341 , B23Q2003/155428 , B23Q2003/155439 , G05B2219/42328 , G05B2219/50186 , Y10T483/136 , Y10T483/1755 , Y10T483/176 , Y10T483/1767
摘要： The present invention provides an automatic tool changer which is adapted to detect the end of the service life of a bearing of a cam follower for systematic replacement of the bearing. The automatic tool changer comprises: a tool changer mechanism (26) including a rotation shaft, a changer arm fixed to the rotation shaft, a cam follower attached to the rotation shaft and having an engagement roller rotatably supported by a bearing, a cam engaged with the engagement roller of the cam follower, and driving means for driving the cam; and a controlling section (57) for controlling an operation of the tool changer mechanism (26). The tool changer further comprises a service life end detecting section (9) for counting the number of times of the operation performed by the tool changer mechanism (26) and judging whether or not the count of the number reaches a reference operation number serving as a basis for the detection of the end of the service life of the bearing. With this arrangement, maintenance can systematically be carried out by detecting the end of the service life of the bearing of the cam follower.
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公开(公告)号：EP2481941A4
公开(公告)日：2018-01-03
申请号：EP10818813
申请日：2010-09-22
申请人： JTEKT CORP
发明人： MATSUNAGA SHIGERU
CPC分类号： B23Q1/70 , B23Q15/12 , B23Q17/00 , F16C2233/00 , G05B2219/49044 , G05B2219/49086 , G05B2219/50186 , Y10T29/5172 , Y10T29/5173 , Y10T483/1705 , Y10T483/1733 , Y10T483/1743
摘要： Loads that act on all the bearings (131, 132 and 133) that support a main spindle (12) are derived from a variation in the state of the main spindle and, in addition, raceway surface contact pressures of the respective bearings are analyzed, so it is possible to accurately keep track of the state of each bearing. Then, when the raceway surface contact pressure exceeds a corresponding threshold, a machining condition is changed to execute control such that the raceway surface contact pressure does not exceed the corresponding threshold, and, furthermore, when the raceway surface contact pressure exceeds the corresponding threshold even when the machining condition is changed, the main spindle is controlled to stop, so it is possible to prevent a seizure of each bearing. Thus, it is possible to improve machining accuracy by controlling the main spindle with high accuracy.
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公开(公告)号：EP2481941A1
公开(公告)日：2012-08-01
申请号：EP10818813.7
申请日：2010-09-22
申请人： JTEKT Corporation
发明人： MATSUNAGA Shigeru
CPC分类号： B23Q1/70 , B23Q15/12 , B23Q17/00 , F16C2233/00 , G05B2219/49044 , G05B2219/49086 , G05B2219/50186 , Y10T29/5172 , Y10T29/5173 , Y10T483/1705 , Y10T483/1733 , Y10T483/1743
摘要： Loads that act on all the bearings (131, 132 and 133) that support a main spindle (12) are derived from a variation in the state of the main spindle and, in addition, raceway surface contact pressures of the respective bearings are analyzed, so it is possible to accurately keep track of the state of each bearing. Then, when the raceway surface contact pressure exceeds a corresponding threshold, a machining condition is changed to execute control such that the raceway surface contact pressure does not exceed the corresponding threshold, and, furthermore, when the raceway surface contact pressure exceeds the corresponding threshold even when the machining condition is changed, the main spindle is controlled to stop, so it is possible to prevent a seizure of each bearing. Thus, it is possible to improve machining accuracy by controlling the main spindle with high accuracy.
摘要翻译： 作用在支撑主轴（12）的所有轴承（131,132和133）上的负载来自主轴状态的变化，并且分析各个轴承的滚道表面接触压力， 因此可以准确地跟踪每个轴承的状态。 然后，当滚道面接触压力超过相应的阈值时，改变加工条件以执行控制，使得滚道面接触压力不超过相应的阈值，此外，当滚道面接触压力甚至超过相应的阈值时 当加工条件改变时，主轴被控制停止，因此可以防止每个轴承的卡住。 因此，通过高精度地控制主轴，能够提高加工精度。
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