Abstract：This paper described the kinematic calibration of the measurement trajectory and error compensation of a 5-axis hybrid machine tool. The kinematics model was based on the closed loop vector kinematic equations while the error model was based on the linear perturbation method. An index to evaluate the measurement trajectory was developed from a non-orthogonal index of the trajectory vectors. Two calibration tests were performed using different trajectories. Two error compensation schemes were based on the forward and inverse kinematics. The calibration tests show that the error compensation scheme based on the inverse kinematics has higher compensation accuracy. Finally, a test of machining an "S"-shape test specimen shows that 94% of the detected points are acceptable. The results verify the effectiveness of the index and the error compensation scheme.
刘宇哲, 吴军, 王立平, 汪劲松. 5轴混联机床运动学标定的测量轨迹评价及误差补偿[J]. 清华大学学报（自然科学版）, 2016, 56(10): 1047-1054.
LIU Yuzhe, WU Jun, WANG Liping, WANG Jinsong. Measurement trajectory evaluation and error compensation for kinematic calibration of a 5-axis hybrid machine tool. Journal of Tsinghua University(Science and Technology), 2016, 56(10): 1047-1054.
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2016, Vol. 56 
