Thermal error compensation for telescopic spindle of CNC machine tool based on SIEMENS 840D system |
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| Authors: | CUI Liangyu GAO Weiguo ZHANG Dawei ZHANG Hongjie HAN Lin |
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| Institution: | CUI Liangyu,GAO Weiguo,ZHANG Dawei,ZHANG Hongjie,HAN Lin (School of Mechanical Engineering,Tianjin University,Tianjin 300072,China) |
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| Abstract: | In this paper, eddy current sensors and thermocouple sensors were employed to measure the thermal field and thermal deformation
of a spindle of a telescopic CNC boring-milling machine tool, respectively. A linear regression method was proposed to establish
the thermal error model. Furthermore, two compensation methods were implemented based on the SIEMENS 840D system by using
the feed shaft of z direction and telescopic spindle respectively. Experimental results showed that the thermal error could be reduced by 73.79%
when using the second compensation method, and the thermal error could be eliminated by using the two compensation methods
effectively. |
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| Keywords: | machine tool thermal error linear regression error compensation |
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