复杂工况数控车削加工振动敏感点测试与分析
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摘要
为研究复杂工况参数(主轴转速、进给量、切削深度等)对车削振动的动态耦合性影响,提出一种敏感点振动测试分析方法。以轴类零件数控车削加工工艺系统为研究对象,在工艺系统数字样机中加入复杂工况模型进行仿真测试以确定振动敏感点和不同工况下敏感点的振幅频率动态响应。实验结果表明:相对于主轴转速和切削深度,进给量对车削振动的影响最大,与数值模拟结果一致。
In order to study the dynamic effects of operating parameters( spindle speed,feed rate,cutting depth,etc.) on turning vibration,a method of testing and analyzing the vibration of sensitive point was proposed.Taking the numerical control turning process system of shaft parts as the research object,the complex working condition model was added to the digital prototype of the process system; then dynamic performance simulation test was carried out to determine the vibration sensitive points,the amplitude-frequency dynamic response would be recorded under different working conditions.The experimental results shown that the feed rate had the greatest influence on turning vibration relative to spindle speed and cutting depth,which was consistent with the numerical simulation results.
In order to study the dynamic effects of operating parameters( spindle speed,feed rate,cutting depth,etc.) on turning vibration,a method of testing and analyzing the vibration of sensitive point was proposed.Taking the numerical control turning process system of shaft parts as the research object,the complex working condition model was added to the digital prototype of the process system; then dynamic performance simulation test was carried out to determine the vibration sensitive points,the amplitude-frequency dynamic response would be recorded under different working conditions.The experimental results shown that the feed rate had the greatest influence on turning vibration relative to spindle speed and cutting depth,which was consistent with the numerical simulation results.
引文
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[16]Dehkordi S H H F,Almassi M,Borghei A M,et al.Simulation of small diesel engine vibration using artificial neural network[J].International Journal of Agriculture and Crop Sciences,2013,5(18):2084-2090
[2]Sabirov F S,Kochinev N A,Shemyakin S S.Operational assessment of machine tool vibration resistance[J].Procedia Engineering,2016,150:215-219
[3]Duro J A,Padget J A,Bowen C R,et al.Multi-sensor data fusion framework for CNC machining monitoring[J].Mechanical Systems and Signal Processing,2016,66-67:505-520
[4]Olejárová,Dobránsky J,Svetlík J,et al.Measurements and evaluation of measurements of vibrations in steel milling process[J].Measurement,2017,106:18-25
[5]Wu D Z,Liu S P,Zhang L,et al.A fog computingbased framework for process monitoring and prognosis in cyber-manufacturing[J].Journal of Manufacturing Systems,2017,43:25-34
[6]刘春时,孙伟,李小彭,等.数控机床整机振动测试方法研究[J].中国工程机械学报,2009,7(3):330-335 Liu C S,Sun W,Li X P,et al.Vibration testing method for CNC machines[J].Chinese Journal of Construction Machinery,2009,7(3):330-335(in Chinese)
[7]魏要强,李斌,毛新勇,等.数控机床运行激励实验模态分析[J].华中科技大学学报(自然科学版),2011,39(6):79-82 Wei Y Q,Li B,Mao X Y,et al.Movement exciting-based experimental modal analysis of NC machine tools[J].Journal of Huazhong University of Science and Technology(Natural Science Edition),2011,39(6):79-82(in Chinese)
[8]宫海军,任向鑫,李庞.振动响应测试技术方法研究及应用[J].合肥工业大学学报(自然科学版),2016,39(6):833-836 Gong H J,Ren X X,Li P.Research and application of vibration response test technology[J].Journal of Hefei University of Technology,2016,39(6):833-836(in Chinese)
[9]卢秉恒,赵万华,张俊,等.高速高加速度下的进给系统机电耦合[J].机械工程学报,2013,49(6):2-11 Lu B H,Zhao W H,Zhang J,et al.Electromechanical coupling in the feed system with high speed and high acceleration[J].Journal of Mechanical Engineering,2013,49(6):2-11(in Chinese)
[10]兰博骁.高速数控车床动态性能监控系统的研究与设计[D].天津:河北工业大学,2015 Lan B X.Research and design on dynamic Characteristics monitoring system of high-speed CNClathe[D].Tianjin:Hebei University of Technology,2015(in Chinese)
[11]王济,胡晓.MATLAB在振动信号处理中的应用[M].北京:中国水利水电出版社,2006 Wang J,Hu X.The Application of MATLAB in vibration signal processing[M].Beijing:China Water Conservancy and Hydropower Press,2006(in Chinese)
[12]张君,王金平,朱波.旋转机械振动信号处理中的滤波及特征提取技术[J].南京工程学院学报(自然科学版),2009,7(3):14-21 Zhang J,Wang J P,Zhu B.Signal filtering and feature extraction technology of rotating machinery vibration signal process[J].Journal of Nanjing Institute of Technology(Natural Science Edition),2009,7(3):14-21(in Chinese)
[13]李舜酩,郭海东,李殿荣.振动信号处理方法综述[J].仪器仪表学报,2013,34(8):1907-1915 Li S M,Guo H D,Li D R.Review of vibration signal processing methods[J].Chinese Journal of Scientific Instrument,2013,34(8):1907-1915(in Chinese)
[14]何俊杰.数控机床动态特性测试分析系统的研究与开发[D].武汉:华中科技大学,2009 He J J.Research and development of a testing and analysis system for dynamic performance of cnc machine[D].Wuhan:Huazhong University of Science and Technology,2009(in Chinese)
[15]崔政,陈南,季鹏,等.切削用量对切削力和切削振动的影响[J].机床与液压,2016,44(7):10-13,52 Cui Z,Chen N,Ji P,et al.Effects of cutting parameters on cutting forces and cutting vibrations[J].Machine Tool&Hydraulics,2016,44(7):10-13,52(in Chinese)
[16]Dehkordi S H H F,Almassi M,Borghei A M,et al.Simulation of small diesel engine vibration using artificial neural network[J].International Journal of Agriculture and Crop Sciences,2013,5(18):2084-2090