Influenced by assembly precision and rotating parts, five-axis machine tool structural error is ap-peared to lead offset error in cutter tip center and reduce the machining accuracy. By analyzing the impact of the errors on the knife sites, the five-axis kinematic error model is built, and multiple measuring the center of the ball at different angles used by 3D probe-ball device, which is a part of AxiSetTM Check-up compo-nent, to accurately solve the error terms based on the corresponding five-axis machine tool feed. The meas-uring method used in this paper has well consistent on various error models, by five-axis motion error com-pensation can not only improve the existing CNC machining accuracy, but also provide a uniform measuring basis for the multi-axis machine tool in the future.%针对五轴机床受装配精度和旋转部件的影响,使机床出现结构误差造成刀具在刀位点处出现偏移,影响机床的加工精度. 通过分析各项误差对刀位点的影响,建立五轴运动学误差模型,使用AxiSetTM Check-up组件中的3D测针-球体设备,对球心进行不同角度的多次测量,根据相应的五轴进给对机床误差项进行精确求解. 所采用的测量方法对建立的各类误差模型具有较好的一致性,通过对五轴运动误差的补偿不仅可以提高现有数控机床的加工精度,而且为以后多轴机床的测量提供了统一的测量基础.
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