数控双主轴车床几何和热误差综合数学模型及实时补偿  

Geometric and Thermal Error Synthesis Model and Real Time Compensation of a NC Twin spindle Lathe

作　　者：杨建国[1] 潘志宏[1] 薛秉源[1] 

机构地区：[1]上海交通大学

出　　处：《机械设计与研究》1998年第1期44-46,共3页Machine Design And Research

摘　　要：本文以某生产厂家的一台数控双主轴车床为研究对象，根据齐次坐标变换原理，推导出了该机床的几何误差和热误差的综合数学模型。在此数学模型中包括了该机床几何误差和热误差的２３个误差因子。经基于此误差综合数学模型的补偿，工件之间的尺寸变化可从原来的６０μｍ以上降低到１４μｍ，工件的锥度变化可从５０μｍ／ｃｍ以上降低到１５μｍ／ｃｍ，大幅度地提高了机床的加工精度。Based on the homogeneous coordinate transformation method,a unique form of the planar error synthesis models is proposed to combine both the geometric and thermal errors of a NC twin spindle lathe.In the models,there are 23 error components,which could mainly affect the accuracy of the machine.After compensation with the models,the sizes variations of the workpieces being cut by the machine could be reduced from 60μm to 14μm,and the taper could be reduced from 50μm/cm to 15μm/cm.

关 键 词：热误差 综合数学模型 实时补偿 数控车床 

分 类 号：TG519.1[金属学及工艺—金属切削加工及机床]