精密机床主轴主动冷却方法研究  

Research on Active Cooling Method for Precision Machine Tool Spindles

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3期36-39,共4页Aviation Precision Manufacturing Technology

基　　金：陕西国防工业职业技术学院重点科研计划项目(Gfy23-14)。

摘　　要：针对精密机床主轴的热误差控制问题,设计了基于螺旋盘管的主轴主动冷却的热误差控制方案。通过搭建主轴热特性测试系统,完成了基于PT-400H精密机床的主轴主动冷却系统。通过在不同冷却液温度下的主轴主动冷却的热特性实验,表明了冷却液温度对热平衡时间没有显著影响,但冷却液温度对于稳态热误差有较为明显的影响。其次,热流固耦合仿真模型可以准确反映主轴内部的生热和变形情况,预估一定实验条件下的热平衡时间和稳态热误差值,可以为工程应用提供参考。Aiming at the thermal error control problem of precision machine tool spindles,a thermal error control scheme based on spiral coil tube for active cooling of spindles is designed.By constructing a spindle thermal behaviors testing system,an active cooling system for the spindle based on PT-400H precision machine tool has been completed.Through thermal behaviors experiments of active cooling of the spindle at different coolant temperatures,it was shown that the coolant temperature has no significant effect on the thermal equilibrium time,but has a significant impact on steady-state thermal error.The thermal fluid structure coupling simulation model can accurately reflect the heat generation and deformation inside the spindle,estimate the thermal equilibrium time and steady-state thermal error under certain experimental conditions,and provide reference for engineering applications.

关 键 词：精密机床 主轴 热特性 稳态误差 

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]