机床基础大件振动时效工艺参数优化方法  

Optimization Method of VSR Process Parameters for Large Machine Tool Body

作　　者：胡敏[1] 余常武[1] 赵万华[1] 寸花英 袁胜万[2] 张文凯 

机构地区：[1]西安交通大学机械制造系统工程国家重点实验室,西安710054 [2]沈机集团昆明机床股份有限公司,昆明650203 [3]许继德理施尔电气有限公司,许昌461000

出　　处：《中国机械工程》2014年第23期3137-3142,共6页China Mechanical Engineering

基　　金：国家自然科学基金资助项目(51235009);国家科技重大专项(2010ZX04001-021)

摘　　要：通过模态仿真的方法得到了最佳的振动时效工艺参数,在此基础上选取相同的机床床身铸件作为实验对象,对新工艺和原工艺下的平均应力消除率进行了对比。实验结果表明,新工艺下床身铸件的平均应力消除率为65.1%,原工艺的平均应力消除率为38.5%,另外,原工艺下,有个测点的应力值没有减小反而增大。新工艺下铸件的应力消除率明显大于原工艺下铸件的应力消除率,验证了所提出的振动时效工艺参数优化方法的正确性。A new method of achieving the best process parameters of VSR through modal simulation was proposed herein.Then the average stress elimination rate of the new process and the original process on the bed casting was compared.The experimental results show that,the average stress elimination rate of the new technology is as 65.1%,while the original process is as 38.5%.Besides,the stress value of one test point under the original process condition increases instead.The stress elimination rate of the new process is higher than that of the original process.The results verify the correctness of the optimization method of VSR process parameters for large machine tool body.

关 键 词：振动时效 模态仿真 盲孔法 应力消除率 

分 类 号：TH16[机械工程—机械制造及自动化]