Abstract:The kinematic equation of the thermal deformation error of the AACMM is established. The temperature variation and the measurement error variation trend of the main structural parameters of the AACMM are studied at the experimental temperature of about 20 ℃. A thermal deformation error compensation model based on multiple linear regression method is established and validated. The results show that the AACMM operating temperature rise up to 3℃, measurement error increases with temperature tends to increase, the maximum length measurement error of up to 0.115 mm. And the thermal deformation error compensation of AACMM is realized, the average length measurement error decreased from 0.0715 mm to 0.033 5 mm. The measurement accuracy of the AACMM is improved to a certain extent.
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