S1301-2-3 CNC旋盤の熱変形簡易補正法の実用化(工作機械と生産加工(2))

概要

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This study presents a simple method to compensate the thermal deformation by measuring temperatures at only a few points on a CNC lathe. Approximate functions are derived for the compensation from the thermal deformations of a head stock and a ball screw, which can be considered as the main factor to cause the thermal deformation of a lathe. The approximate formula of the thermal deformation about the headstock is derived as a function of the temperatures measured at a few points and the rotational speed of the main spindle. Furthermore, the approximate formula of the thermal deformation of the ball screw is likewise derived as a function of the temperatures of the ball nut. By using the estimation value of the thermal deformation obtained from both the approximation functions, the study confirms the work error is well compensated.
2009-09-12