摘要
滚珠丝杠副由于摩擦产生的热变形是进给系统热误差产生的主要原因。论文以TX1600数控镗铣加工中心为例,首先对丝杠建立了简化的三维模型,根据实际运动状态,通过施加移动热载荷,利用Ansys仿真出丝杠的温度场和热变形,得到了丝杠表面温度场的分布趋势和达到热平衡的时间,确定了滚珠丝杠的热变形。其次通过模糊聚类法对温度变量进行分组,找到关键的测温点的数量和位置,为后续建立补偿模型奠定基础。
The thermal deformation of the ball screw pair generated by friction is the main cause in the thermal error of teed system. In thin paper taked the TX1600 CNC boring and milling machining center as an example, at first, established a three-dimensional model of the ball screw and according to the actual motion state, by applying the moving load, and using Ansys to simulate temperature field and thermal deformation of the ball screw, we got the screw surface temperature field distribution trends and the time when reach to the thermal equilibrium, and also determined the thermal deformation of the ball screw. Secondly, by using fuzzy clustering method for grouping variable temperature, we found the critical temperature point, and it lay the foundation for the subsequent establishment of the compensation model.
出处
《机电产品开发与创新》
2014年第5期126-128,共3页
Development & Innovation of Machinery & Electrical Products
基金
辽宁省自然科学基金(2013020035)
辽宁省科学技术项目(2013220017)
关键词
ANSYS仿真
移动热源
模糊聚类
关键测温点
ansys simulation
moving load
fuzzy clustering
the critical measurement point
