基于有限元的机床导轨热误差分析  

Study of machine tool thermal error based on finite element

作　　者：杨定军[1] 

机构地区：[1]合肥通用机械研究院,安徽合肥230031

出　　处：《机械》2011年第8期47-50,58,共5页Machinery

摘　　要：机床热误差是影响高精密机床加工精度的重要因素之一,而目前对机床热误差的分析比较少,以机床导轨为研究对象提出了一种结合有限元理论的导轨热误差确定方法,将数值模拟技术和实际测量实验相结合,利用实验测量数据修正有限元分析边界条件,从而得到准确的导轨热变形计算结果,证明了该热误差确定方法应用到实际机床导轨热误差确定和补偿方面的可行性。Machine thermal error is the effect of high precision machine tool processing precision is one of the important factors for machine tools, and at present the thermal error analysis, this paper takes less machine sideway as the object of research put forward a kind of combination of finite element theory, a method to determine the thermal error guide It combines numerical simulation with actual measurement experiment experimental data, uses modified finite element analysis of boundary conditions, gets thermal deformation of the rail and accurate results, shows that the thermal error of determination of heat applied to the actual machine tool guide error identification and compensation is feasible.

关 键 词：机床误差 导轨 变形计算 有限元 

分 类 号：TG502.7[金属学及工艺—金属切削加工及机床]