发明名称 |
Numerical control apparatus for machine tool |
摘要 |
<p>The present invention provides a numerical control apparatus for a machine tool, which corrects an axial displacement of a main spindle caused due to a change in preload level and occurring according to the rotation speed of the main spindle. The numerical control apparatus (3) comprises: a numerical control section (6) for numerically controlling the movement of a spindle head (2) and for outputting a rotation command; a spindle control section (7) for controlling the rotation of a main spindle (5); a preload change control section (8) for changing the level of a preload applied to bearings (36,37); and a correcting section (9) for outputting correction data for correction of an axial displacement of the main spindle (5) caused due to a change in the preload level and occurring according to the rotation speed of the main spindle (5) to the numerical control section (6) on the basis of the rotation command. <IMAGE></p> |
申请公布号 |
EP1215550(A2) |
申请公布日期 |
2002.06.19 |
申请号 |
EP20010126525 |
申请日期 |
2001.11.13 |
申请人 |
MORI SEIKI CO., LTD. |
发明人 |
MIZUGUCHHI, HIROSHI;YOKOYAMA, MASAAKI;WAKIZAKA, MUNETAKA |
分类号 |
B23Q15/18;B23B19/02;B23Q1/26;B23Q1/30;B23Q1/40;G05B19/10;G05B19/404;(IPC1-7):G05B19/404 |
主分类号 |
B23Q15/18 |
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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