大型龙门钻铣床主轴滑枕热结构分析  

Thermal Structure Analysis of Spindle Ram for Large-Scale Milling Planer

作　　者：张奎奎[1] 黄美发[1] 伍伟[1] 张政泼 

机构地区：[1]桂林电子科技大学机电工程学院,广西桂林541004 [2]桂林广陆数字测控股份有限公司,广西桂林541004

出　　处：《组合机床与自动化加工技术》2015年第2期42-46,共5页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：国家自然科学基金(51365009);广西科学研究与技术开发计划项(桂科能1355012-5);广西硕士研究生科研创新项(YCSZ2014134)

摘　　要：龙门机床滑枕部件在工作过程中发生热变形,导致不能满足高精度加工要求。该研究从滑枕结构方面进行分析,首先对滑枕的稳态热边界条件进行研究,在此基础上建立滑枕热结构耦合的初始条件,然后计算出滑枕在Z向进给不同位置时三个方向和综合的变形量,计算所得综合变形量与实际加工误差相吻合。通过对三个方向变形量与滑枕结构布置的分析发现,滑枕的弯曲和非线性变形是由于结构不对称以及主轴中心与热源中心不重合所导致的,为机床的热变形补偿和结构热设计提供了基础。Ram parts of gantry machine tool thermal deformation occur in the work process, which can not meet the requirements of high-precision processing. This research is analyzed from the aspects of structure of ram, first of all, the paper studied the steady state thermal boundary conditions of the ram. On the basis of the conditions, establish the initial conditions of thermal structure coupling, and then calculate the three di-rections and integrated deformation of ram in the Z to feed at different positions. Calculate the integrated de-formation consistent with the actual processing error. The analysis of the three direction deformation and ram structure layout found that ram the bending and nonlinear deformation is due to the structural asymmetry and spindle center does not coincide with the heat source center. The result provides the foundation for thermal deformation compensation and structure thermal design.

关 键 词：龙门机床 滑枕 热结构耦合 变形 结构分析 

分 类 号：TH132[机械工程—机械制造及自动化] TG502.3[金属学及工艺—金属切削加工及机床]