基于球杆仪的数控机床空间误差建模与检测方法研究

为改善传统的数控机床空间误差检测方法检测时间长、成本高、操作复杂等缺点，提出一种新的基于球杆仪的空间误差分析与检测方法。沿半球螺旋线轨迹对数控机床空间误差进行检测，并利用多元回归分析理论建立空间误差的综合模型；利用所建的回归模型对不同检测点的误差进行预测和补偿。实验结果表明，该方法可将实验所用的立式加工中心几何误差减小80%左右。  

Research on Modeling of Volumetric Errors and Detection Method for CNC Machine Tools Using Ball Bar

Traditional detection method for volumetric errors of CNC machine tools has many shortcomings, such as time-consu- ming, high cost and being complicated to operate, in order to improve it, the authors proposed a novel analysis and detection method of the volumetric errors of machine tools, in which a hemispherical helix ball bar test was used. The error testing points in different posi- tions were predicted and compensated with a buih regression model. The experiment on a vertical machining centre for verifying the modeling and detection method showed that about an 80% reduction in geometric error was attained.