大功率大扭矩的摆角铣头热特性分析  

Thermal Characteristics Analysis on Large Torque and High Capacity Angular Milling Head

作　　者：郭铁能[1] 戎伟[1] 刘志峰[1] 李富平[1] 杨文通[1] 董湘敏[1] 

机构地区：[1]北京工业大学机械工程与应用电子技术学院精密超精密加工国家工程研究中心,北京100124

出　　处：《北京工业大学学报》2011年第5期661-668,共8页Journal of Beijing University of Technology

基　　金：国家科技支撑计划资助项目(2006BAF01B09-04);北京市科委资助项目(D08010400130803)

摘　　要：针对大功率大扭矩摆角铣头系统,根据加工切削条件,充分考虑轴承、齿轮和切削等热源作用以及润滑、对流和辐射等散热方式,进行了有限元建模和分析.为了验证分析结果的准确性,对摆角铣头实际切削情况下铣头关键部位的温度进行测量,测量结果与分析结果表明,在摆角铣头设计阶段,通过提出的建模和分析方法,能较准确地获取铣头的热性能特征.In order to achieve precise temperature distribution,all possible factors are considered in the FEA model,such as the heat source and the way of heat dissipation.The heat source includes of bearings,gears,and cutting.And the heat dissipation includes of heat conversion,radiation and lubrication mode.The temperature change of key point on the angular milling head is analyzed and the characteristics of the angular milling head are obtained.The thermal experiment on the angular milling head under the practical cutting condition is carried on,and the temperature change of key point on the milling head is measured.The discrepancy between the experimental results and the analysis results is small.Therefore,the analysis model can simulate effectively the temperature change of the actual milling head,and the proposed method can be used to predict the temperature characteristics during the design of the angular milling head is effective.

关 键 词：摆角铣头 热特性 有限元 瞬态温度场 

分 类 号：TG502.15[金属学及工艺—金属切削加工及机床]