卧式加工中心模态分析与测试
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摘要
结合面是影响整机动态特性的重要因素。对结合面的正确处理是研究整机特性的关键。首先,以TH6350卧式加工中心为对象。其次,采用合理的方法对四种不同类型的结合面进行等效处理,建立了整机有限元模型。然后,采用ANSYS有限元分析软件分析了整机的模态特性。最后采用锤击激振法对TH6350卧式加工中心进行了模态试验。通过对比试验结果与ANSYS分析结果,发现二者数据非常接近。从而验证了前期结合面处理的正确性与合理性,建立的有限元模型能真实地反映整机性能。
Joint surface is the important effect factor of the dynamic performance of the total machine.Dealing the joint surface with the correct ways is the key to research the characteristic of the total machine.Firstly,the horizontal machining center of TH6350 has been regarded as a research object.Secondly,several equivalent methods have been used to treat the four different kinds of joint surfaces.And the finite element model of the total machine has been built.Then,the modal characteristics of the total machine have been analyzed by the analysis software of ANSYS.Finally,the modal test by hammer-hitting pulse-inspirit method has been taken.Comparing the experimental results with ANSYS analysis results,it has been found that the two results are very close.Then it can be verified that the treatment of the joint surface is correct and the finite element model can truly reflect the performance of the total machine.
Joint surface is the important effect factor of the dynamic performance of the total machine.Dealing the joint surface with the correct ways is the key to research the characteristic of the total machine.Firstly,the horizontal machining center of TH6350 has been regarded as a research object.Secondly,several equivalent methods have been used to treat the four different kinds of joint surfaces.And the finite element model of the total machine has been built.Then,the modal characteristics of the total machine have been analyzed by the analysis software of ANSYS.Finally,the modal test by hammer-hitting pulse-inspirit method has been taken.Comparing the experimental results with ANSYS analysis results,it has been found that the two results are very close.Then it can be verified that the treatment of the joint surface is correct and the finite element model can truly reflect the performance of the total machine.
引文
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[8]夏玲玲,袁军堂,汪振华.KVC1050N立式加工中心有限元分析与模态试验[J].机械设计与制造,2012(1):18-20.(Xia Ling-ling,Yuan Jun-tang,Wang Zhen-hua.Finite element analysis and modal test of a vertical machining center of KVC1050N type[J].MachineryDesign&Manufacture,2012(1):18-20.)
[9]王小虎.卧式加工中心数字化建模与动态性能分析技术研究[D].成都:四川大学,2011.(Wang Xiao-hu.Study on th e digital modeling and dynamic analysis technology of horizontal machining centers[D].Chengdu:Sichuan University,2011.)
[10]Tedric A.Harris,Michael N.Kotzalas.Essential Concepts of Bearing Technology[M].US:Taylor&Francis Group,2007:33-53.)
[2]郝锌,闵小俊,张向宇.基于ANSYS的TH65100立柱结构静力分析及改进设计[J].机械,2009,36(4):44-46.(Hao Xin,Min Xiao-jun,Zhang Xiang-yu.Static FEA and improvement design of the column structure based on ANSYS[J].Machinery,2009,36(4):44-46.)
[3]张晓龙,李功宇,吴俊华.TH65100主轴箱结构动力学分析及改进设计研究[J].机床与液压.2008,36(4):354-356.(Zhang Xiao-long,Li Gong-yu,Wu Jun-hua.Dynamic analysis and modification design of the TH65100 headstock structure[J].Machine Tool&Hydraulics,2008,36(4):354-356.)
[4]金涛,彭晓辉,赵万华.基于结合面的车铣复合加工中心有限元建模[J].组合机床与自动化加工技术,2011(9):77-80.(Jin Tao,Peng Xiao-hui,Zhao Wan-hua.Turning-milling compound machining centers finite element modeling based on joint surface[J].Modular Machine Tool&Automatic Manufacturing Technique,2011(9):77-80.)
[5]黄玉美,付卫平,董立新.结合面法向动态特性参数研究[J].机械工程学报,1993,29(3):74-78.(Huang Yu-mei,Fu Wei-ping,Dong Li-xin.Research on the dynamic normal characteristic para meters of joint surface[J].Chinese Journal Of Mechanical Engineering,1993,29(3):74-78.)
[6]黄玉美,傅卫平,佟浚贤.获取结合面实用切向阻尼参数的方法[J].西安理工大学学报,1996,12(1):1-5.(Huang Yu-mei,Fu Wei-ping,Tong Jun-xian.A method of acquiring applied tangential damping parameters of joint surfaces[J].Journal of Xi’an University of Technology,996,12(1):1-5.)
[7]张学良.机械结合面动态特性及应用[M].北京:中国科学技术出版社,2002:27-55.(Zhang Xue-liang.The Dynamic Characteristics and Application of Machine Joint Surface[M].Beijing:Press of Science and Technology of China.2002.27-55.)
[8]夏玲玲,袁军堂,汪振华.KVC1050N立式加工中心有限元分析与模态试验[J].机械设计与制造,2012(1):18-20.(Xia Ling-ling,Yuan Jun-tang,Wang Zhen-hua.Finite element analysis and modal test of a vertical machining center of KVC1050N type[J].MachineryDesign&Manufacture,2012(1):18-20.)
[9]王小虎.卧式加工中心数字化建模与动态性能分析技术研究[D].成都:四川大学,2011.(Wang Xiao-hu.Study on th e digital modeling and dynamic analysis technology of horizontal machining centers[D].Chengdu:Sichuan University,2011.)
[10]Tedric A.Harris,Michael N.Kotzalas.Essential Concepts of Bearing Technology[M].US:Taylor&Francis Group,2007:33-53.)