提高大型叶片数控加工精度技术

Improving Machining Accuracy of the Large Blade by NC Machine Tools

以多体系统理论为基础 ,通过分析位移变换矩阵和位置变换矩阵 ,考虑几何误差参数、热变形误差参数和载荷误差参数 ,建立了机床空间误差综合计算模型 ,在不同类型的机床上分别对几何误差、热变形误差和载荷误差进行实验 ,结果表明加工精度可提高 50

Based on the theory of multi-body system,through analysiny the matrix of the position transformation and the displacement transformation,a synthetic model for positioning errors combined with the parameters of geometric errors,thermal deformation errors and loading errors is put forth.This model is tested in different type machine tools,and a series of experimental results show that the process accuracy could be enhanced more than 1 time.