镗铣加工中心进给系统热特性分析与实验研究  

The Thermal Characteristics Analysis and Experiment Research of Feed System of CNC Boring and Milling Machining Center

作　　者：孙军[1] 秦显军[1] 钱彬彬[1] 黄圆[1] 

机构地区：[1]沈阳建筑大学机械工程学院,沈阳110168

出　　处：《组合机床与自动化加工技术》2016年第5期46-50,共5页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：辽宁省自然科学基金(2013020035);辽宁省科技计划项目(2013220017)

摘　　要：对于精密机床,随着制造水平的提高,削弱了几何误差对加工精度产生的影响,但机床进给系统的热变形对加工误差的影响越来越大,因此研究进给系统热特性具有深远的意义。以TX1600G数控镗铣加工中心铣削部分的进给系统为研究对象。首先,利用ANSYS建立进给系统的简化三维模型,通过施加移动热源来模拟实际的加工条件,得到滚珠丝杠在5m/min的转速下的温度场分布。再次,并设计滚珠丝杠温度场实验方案,开发了温度测量系统来实现温度场数据采集。最后,将实验结果与有限元结果进行对比,对仿真结果的可靠性和精度进行验证。同时为热误差模型建立,提供必要的数据支持。For precision machine tools, with the improvement of manufacturing level, weaken the impact of the geometric error on machining precision, but the influence of the thermal deformation of machine tool feed system to processing error become more bigger, so the thermal characteristics of feed system has far-reaching significance. Taking the feed system milling machining center of TX1600G milling boring as the research object. First of all, using ANSYS to establish a simplified three-dimensional model of the feed system, by applying moving heat source to simulate the actual processing conditions, get the ball screw temperature field distribution under the speed of 5m/rain. Again,design ball screw temperature field experiment and scheme of temperature measuring system to collection the temperature field data. Finally, the experimental results compared with the finite element results, to verify the the reliability and accuracy of simulation results. For thermal error model was established, at the same time provide the necessary data to support.

关 键 词：温度场 移动热源 实验方案 温度采集系统 

分 类 号：TH16[机械工程—机械制造及自动化] TG65[金属学及工艺—金属切削加工及机床]