THERMAL DISPLACEMENT CORRECTION DEVICE AND THERMAL DISPLACEMENT CORRECTION METHOD
申请公布号:EP2711126(A4)
申请号:EP20120786586
申请日期:2012.05.16
申请公布日期:2016.11.30
发明人:SASAKI YUJI;IWAI HIDEKI;SAKURAI YASUMASA;ONISHI KIMIHIRO;WAKAZONO YOSHIO;YAMAMOTO YOSHIJI
分类号:G05B19/404;B23Q15/18
主分类号:G05B19/404
摘要:Provided are a thermal displacement compensating device and a thermal displacement compensating method for a machine tool, capable of performing a structural analysis by a finite element method at a high speed and hence, of performing a thermal displacement compensation accurately on a real time basis. A block temperature obtaining section obtains temperatures of respective blocks based on temperature information detected by temperature sensors wherein temperatures in each of the respective blocks into which a column is divided to be pluralized are defined as a uniform value. An FEM analysis section performs a structural analysis by a finite element method based on the temperatures of the respective blocks obtained by the block temperature obtaining section and infers thermal displacement amounts of the column. A compensation value calculation section calculates a compensation value for a machining command position based on the thermal displacement amounts of the column inferred by the finite element method analysis section. A compensation section compensates the machining command position by the compensation value obtained by the compensation value calculation section.
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