滚珠丝杠直线模组的模态分析
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摘要
针对直线模组在工作过程中容易出现共振、影响工作精度、缩短使用寿命等问题,提出用有限元分析和试验相结合的方法来研究滚珠丝杠直线模组的固有频率。通过建立三维实体模型,用有限元分析方法对滑块在不同位置状态下直线模组的模态进行分析。通过锤击法产生激振力,用振动传感器获取模组的振动信号。通过有限元分析,得到滑块在不同位置下直线模组的固有频率和固有振型。通过对采集到的振动信号进行快速傅里叶变换,得到频谱图。通过对测试数据的分析对比,验证模态分析建模的正确性,为滚珠丝杠直线模组的结构优化设计与应用提供理论依据。
Since the linear module under operation is prone to resonance, which will lower its working accuracy and shorten its service life, in this paper, the analysis is conducted on the natural frequency of the linear module with ball screw, by means of and experiment. Based on the established 3 D solid model, the finite-element modal analysis is conducted on the linear module when the slider is placed at different positions; the hammering method is applied to generate the exciting force, and the vibration signal of the module is obtained by the vibration sensor. Through the finite element analysis, the natural frequency and the natural vibration mode of the linear module when the slider is put in place at different positions are identified, and the frequency spectrogram is obtained by collecting the vibration signals via Fast Fourier Transform. The data analysis and comparison prove that this method is correct, which provide theoretical reference for the structural optimization and application of the linear module with ball screw.
Since the linear module under operation is prone to resonance, which will lower its working accuracy and shorten its service life, in this paper, the analysis is conducted on the natural frequency of the linear module with ball screw, by means of and experiment. Based on the established 3 D solid model, the finite-element modal analysis is conducted on the linear module when the slider is placed at different positions; the hammering method is applied to generate the exciting force, and the vibration signal of the module is obtained by the vibration sensor. Through the finite element analysis, the natural frequency and the natural vibration mode of the linear module when the slider is put in place at different positions are identified, and the frequency spectrogram is obtained by collecting the vibration signals via Fast Fourier Transform. The data analysis and comparison prove that this method is correct, which provide theoretical reference for the structural optimization and application of the linear module with ball screw.
引文
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[3]魏效玲,王佳宁,刘强.基于ANSYS Workbench的滚珠丝杠副模态分析[J].河北工程大学学报:自然科学版,2017,34(1):103-106.
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[9]蔡力钢,马仕明,赵永胜,等.多约束状态下重载机械式主轴有限元建模及模态分析[J].机械工程学报,2012,48(3):165-173.
[10]刘栋,梅雪松,冯斌,等.基于Symlets小波滤波的滚珠丝杠伺服进给系统频响特性辨识[J].机械工程学报,2011,47(13):153-159.
[11]Choi Y H,Cha S M,Hong J H,et al.A study on the vibration analysis of a ball screw feed drive system[J].Materials Science Forum,2004,506(471):149-154.
[12]傅中裕,杨晓京.ANSYS的丝杠模态分析[J].机械制造与自动化,2004,33(6):37-39.
[13]荣双龙,李传日,徐飞,马甜.试验模态分析最佳测试点选取方法的优化[J].北京航空航天大学学报,2014,40(4):536-543.
[14]Xu Xiang Rong,Song Xian Chun,Jiang Hong Kui,et al.Finite wlement modal analysis of ball screws linear guide feed unit[J].Applied Mechanics and Materials,2013,2755(433):67-71.
[15]褚志刚,吴洋俊,熊敏,等.锤击法固有频率在线检测系统的开发[J].电子测量与仪器学报,2015,29(1):31-37.
[2]杨晓君,赵万华,刘辉.丝杠进给系统的振动模态耦合分析[J].机械设计与制造,2012,50(10):259-261.
[3]魏效玲,王佳宁,刘强.基于ANSYS Workbench的滚珠丝杠副模态分析[J].河北工程大学学报:自然科学版,2017,34(1):103-106.
[4]康件丽,陈国强,赵俊伟.3-PRS机构工作空间的蒙特卡洛方法分析[J].河南理工大学学报:自然科学版,2014,33(4):478-481.
[5]吕建法,闫兵,李柏林,等.TX6916镗铣床主轴模态分析及其动态性能试验[J].机械设计,2010,27(5):45-49.
[6]Zhang Ya Wei,Zhang Wei Min.Modal analysis of ball screw drive system by finite element method[J].Key Engineering Materials,2011,1076(464):285-288.
[7]梁君,赵登峰.模态分析方法综述[J].现代制造工程,2006(8):139-141.
[8]朱坚民,张统超,李孝茹.基于结合部刚度特性的滚珠丝杠进给系统动态特性分析[J].机械工程学报,2015,51(17):72-82.
[9]蔡力钢,马仕明,赵永胜,等.多约束状态下重载机械式主轴有限元建模及模态分析[J].机械工程学报,2012,48(3):165-173.
[10]刘栋,梅雪松,冯斌,等.基于Symlets小波滤波的滚珠丝杠伺服进给系统频响特性辨识[J].机械工程学报,2011,47(13):153-159.
[11]Choi Y H,Cha S M,Hong J H,et al.A study on the vibration analysis of a ball screw feed drive system[J].Materials Science Forum,2004,506(471):149-154.
[12]傅中裕,杨晓京.ANSYS的丝杠模态分析[J].机械制造与自动化,2004,33(6):37-39.
[13]荣双龙,李传日,徐飞,马甜.试验模态分析最佳测试点选取方法的优化[J].北京航空航天大学学报,2014,40(4):536-543.
[14]Xu Xiang Rong,Song Xian Chun,Jiang Hong Kui,et al.Finite wlement modal analysis of ball screws linear guide feed unit[J].Applied Mechanics and Materials,2013,2755(433):67-71.
[15]褚志刚,吴洋俊,熊敏,等.锤击法固有频率在线检测系统的开发[J].电子测量与仪器学报,2015,29(1):31-37.