基于龙门五轴加工中心薄弱环节的静力学补偿研究  

Study on Static Compensation Based on the Weakness of Gantry Five Axis Machining Center

作　　者：包丽[1] 李希朝[2] 仝建[3] 

机构地区：[1]齐齐哈尔大学机电工程学院,黑龙江齐齐哈尔161006 [2]山东劳动职业技术学院机械工程学院,济南250022 [3]沈阳机床集团设计研究院,沈阳110142

出　　处：《组合机床与自动化加工技术》2014年第10期5-8,共4页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：国家自然科学基金(51075218);黑龙江省教育厅面上项目(11551536);齐齐哈尔大学青年教师科研启动支持项目(2012k-M18);齐齐哈尔大学青年重点教研项目(2013071)

摘　　要：以某型龙门五轴加工中心为研究对象,采用有限元技术对整机进行动静态特性分析。建立了有限元模型并对其进行了三个方向静刚度的对比分析后,结合前4阶模态振型找出了影响整机动静态特性的薄弱环节-横梁。由于横梁是保证机床加工精度的关键,依托有限元软件分析出横梁上主轴箱等组件在不同的11个位置得到的静力学结果,对原有横梁加工工艺进行改进。通过实际测量试验结果对比,发现改进工艺后比改进前横梁的变形量降低了30%,证明了工艺改进的有效性。Taking a certain type of gantry five axis machining center as research object,the paper uses the theory of finite element analysis to analyse the static and dynamic characteristics. The finite element model is established and the three directions of static stiffness are comparative analysed,with the combination of the first four modal shape,the weak link of the whole motor static characteristics is beam. Because the beam is the key to guarantee the processing precision of machine tools,based on the finite element software,getting the results of the spindle box and other components on the beam in the 11 different positions. Thus,the original processing technology is improved. Through the actual measurement test results,found the improvement process compared with the before process,deformation of beam is reduced by 30%. It proves the effectiveness of the improvement process.

关 键 词：龙门五轴加工中心 有限元分析 横梁变形 补偿 

分 类 号：TH659[机械工程—机械制造及自动化] TG502[金属学及工艺—金属切削加工及机床]