基于热-结构顺序耦合对机床主轴箱环境温度的热特性分析  

Thermal Characteristic Analysis of Machine Tool Spindle Box Based on Thermal Structure Coupling

作　　者：李志伟[1] 

机构地区：[1]四川建筑职业技术学院,四川德阳618000

出　　处：《机械研究与应用》2017年第2期96-100,共5页Mechanical Research & Application

基　　金：国家科技重大专项:数控铣床研究(编号:2011ZX04002-081)

摘　　要：以轮槽数控铣床为研究对象,利用有限元软件中热-结构顺序耦合功能对机床主要热源主轴箱在运行中受环境温度影响进行热特性分析。为了能够准确揭示环境温度对机床主轴箱在运行中的热特性影响,通过模拟主轴箱在20℃~32℃的环境温度状态,结果表明:当主轴箱运行的环境温度从20℃升高到32℃,主轴前端的热变形从52μm增加到187μm,同时随着环境温度升高,主轴前端热变形加剧。主轴箱的热特性受环境温度影响很大,对于轮槽数控铣床这样大型精密加工设备,应该合理降低环境温度变化对主轴箱加工精度的影响,提高机床加工的整体稳定性。Based on the wheel groove CNC milling machine as the research object, thermal characteristic analysis to the mainheat source of NC machine tools spindle box in operation would be affected by environmental temperature is conducted by usingthe hot-structure order coupling function of the finite element software. In order to accurately reveal the effect of environmentaltemperature on the thermal characteristics of spindle box in running process, the spindle box in 20℃ - 32℃ ambient tempera-ture is simulated; the results show that when temperature of the operational spindle box environment increases from 20℃ to32℃, thermal deformation of the front-end of spindle increases from 52 μm to 187μm, and at the same time, as the incre-ment of environment temperature, thermal deformation of the front-end of spindle becomes serious. Thermal characteristics ofthe spindle box is highly affected by the environment temperature, as for the large-scale precision machining equipments likethe wheel groove CNC milling machine, it is necessary to reasonably reduce the effect of environmental temperature change onthe machining accuracy of the spindle box, so as to enhance the overall stability of the machine tool.

关 键 词：主轴箱 热-结构顺序耦合 环境温度 热特性分析 

分 类 号：TG659[金属学及工艺—金属切削加工及机床]