卧式摆头加工中心动横梁热固耦合特性研究  

Research on Thermal-Solid Coupling Characteristics of the Movable Crossrail in Horizontal Machining Center with Rotary Milling Head

作　　者：梁庆铧 谢颖熙[1] 陆龙生[1] 黄光景 蔡思原 杨舒 韦世勇 姚云鹏 LIANG Qinghua;XIE Yingxi;LU Longsheng;HUANG Guangjing;CAI Siyuan;YANG Shu;WEI Shiyong;YAO Yunpeng(School of Mechanical&Automotive Engineering,South China University of Technology,Guangzhou Guangdong 510641,China;CATO Precision Machinery(Guangdong)Co.,Ltd.,Dongguan Guangdong 523000,China)

机构地区：[1]华南理工大学机械与汽车工程学院,广东广州510641 [2]巨冈精工(广东)股份有限公司,广东东莞523000

出　　处：《机床与液压》2024年第10期155-160,188,共7页Machine Tool & Hydraulics

基　　金：国家重点研发计划(2020YFB1711301)。

摘　　要：以五轴加工中心为代表的高端数控机床是国家重要战略物资,具有很高的综合性能需求。基于热固耦合分析方法,针对卧式加工中心中承载摆角铣头的动横梁进行结构特性研究。建立焊接式动横梁的实体单元热固耦合有限元模型并进行仿真,分析动横梁在结构静力载荷和热载荷综合作用下的变形和应力。采用多元回归拟合方法,研究不同结构参数对动横梁结构特性的影响规律,并根据影响规律对结构参数进行优化调整。在质量基本不变的情况下,优化后的动横梁焊接结构的Y轴最大位移减少了10.489%,最大应力减少了41.06%。High-end CNC machine tools represented by five-axis machining centers are important national strategic materials and have high comprehensive performance requirements.The structural characteristics of movable crossrail bearing rotary milling head in hor-izontal machining were investigated based on thermal-solid coupling analysis method.A solid finite element model of the movable cross-rail was established for thermal-solid coupling simulation,and the deformation and stress of the movable crossrail were analyzed under the comprehensive effects of structural static load and thermal load.The multiple regression fitting method was used to study the influ-ence law of structural parameters on the structural characteristics of the movable crossrail,and the structural parameters were optimized according to the influence law.After optimization,the maximum deformation of the movable crossrail along the Y axis is reduced by 10.489%and the maximum stress is reduced by 41.06%with the basically same quality.

关 键 词：五轴加工中心 动横梁 结构特性 热固耦合 多元回归拟合 多参数优化 

分 类 号：TG502.31[金属学及工艺—金属切削加工及机床]