基于主动冷却的机床主轴系统热误差仿真研究  

Simulation study on thermal error of precision machine tool spindle system based on active cooling

作　　者：郭力[1] GUO Li(Shaanxi institute of Technology,Xi'an 710300)

机构地区：[1]陕西国防工业职业技术学院,西安710300

出　　处：《航空精密制造技术》2024年第5期33-35,共3页Aviation Precision Manufacturing Technology

摘　　要：针对精密机床的热误差控制问题,提出基于主动冷却的热误差控制法。通过设计精密机床主轴系统的冷却方案,搭建了基于主动冷却的精密机床主轴冷却系统,建立了PT-400H数控机床热流固耦合仿真模型,进行了机床热误差仿真实验研究。实验结果显示20℃恒温冷却作用下,主轴到达热平衡状态的时间有效缩短,且最大热伸长降低了15μm,仿真实验的结果证明了所提出主动冷却方案的有效性,为进一步的实验验证提供了依据。A thermal error control method based on active cooling is proposed for precision machine tools.By designing a cooling scheme for the precision machine tool spindle system,a precision machine tool spindle cooling system based on active cooling was built,and a thermal fluid solid coupling simulation model of PT-400H CNC machine tool was established.The thermal error simulation experiment of the machine tool was conducted.The experimental results show that under the constant temperature cooling of 20°C,the time for the spindle to reach thermal equilibrium is effectively shortened,and the maximum thermal elongation is reduced by 15μm.The simulation results prove the effectiveness of the proposed active cooling scheme and provide a basis for further experimental verification.

关 键 词：精密机床 主轴系统 热误差 仿真模型 

分 类 号：TH115[机械工程—机械设计及理论] TG533[机械工程—精密仪器及机械]