数控机床外文资料

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数控机床外文资料

Abstract： A method for improving accuracy of CNC machine tools through compensation for the thermal errors is studied. The thermal errors are obtained by 1-D ball array and characterized by an auto regressive model based on spindle rotation speed. By revising the workpiece NC machining program ， the thermal errors can be compensated before machining. The experiments on a vertical machining center show that the effectiveness of compensation is good.
Key words : CNC machine tool Thermal error Compensation