平压平模切机动平台共轭凸轮驱动机构的分析研究
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摘要
自动平压平模切机是印刷包装行业中重要的表面整饰加工设备。动平台驱动机构是平压平模切机的关键工作部件,其性能直接影响模切工艺,决定产品的质量,反映机器本身的优劣。本论文在剖析传统曲柄肘杆机构的运动和动力特性基础上,提出采用共轭凸轮驱动平台的方案,并对其进行设计、分析与研究,从改进运动特性入手将其与传统机构进行对比分析,并利用计算机辅助设计技术开发出动平台驱动机构的选型分析软件。
本论文的主要工作包括如下内容：
(1)对曲柄肘杆机构进行运动学分析,结合模切工艺,掌握机构的运动变化规律；利用达朗贝尔原理对曲柄肘杆机构进行动态静力分析,掌握相关构件的受力情况。
(2)提出几何封闭共轭凸轮驱动动平台的运动方式,选择合适的运动规律,进行了共轭凸轮轮廓的反求设计研究。
(3)根据高副低代的原理,分析在不同运动规律下动平台的运动特性,并与原机构的运动特性进行对比,揭示新机构对改进模切过程的作用。
(4)建立了凸轮—从动件机构的动力学模型,对凸轮机构的动态特性进行分析。分析结果表明：机构的工作频率远小于系统自由振动的频率,工作端的动态响应接近静态运动规律,无需进行高速动态校核。
(5)利用VC与MATLAB编制了动平台驱动机构的选型分析演示界面。
通过课题研究,完成上述工作,达到预计目标,动平台共轭凸轮驱动机构能够满足模切工艺的需求并在一定程度上起到改善作用。
The driving mechanism of the moving platform is the key component of the die-cutting machine. Its function plays an important role on the die-cutting technology and decides the quality of the products, thus reflects the machine's performance. Though analyzing on the conventional dual-elbow-bar mechanism, the paper put forward a new scheme on the design of the driving mechanism, which use the conjugate cam instead. Then give a compare on the moving characteristics between two different kinds'mechanism.
The paper includes the key points done as follows:
(1)According to die-cutting technology, motion analysis of the dual-elbow-bar mechanism is done and the moving curve is acquired; then, force characteristics of the key components is analyzed.
(2)The conjugate cam-driving mechanism is proposed. By choosing adaptive moving law, the design on the conjugating cam is being researched and the contour of the cam is described.
(3)According to the formula of higher pair substitute equivalent linkage instead, the platform's moving characteristics under different motion laws is analyzed and compared with the original mechanism, then the impaction on the die-cutting technology is discussed.
(4)Kinetic model of the cam-follower mechanism is established, and force characteristics is analyzed. It is indicated that the cam mechanism's work frequency is smaller than the system's free vibration frequency, so that the work end's dynamic response has little difference with the static moving regulation and need not to be revised farther.
(5)The choosing and analyzing formula of the driving mechanism of the moving platform is compiled by using VC and MATLAB tools software.
Through research, the following work is done and the goal is almost achieved. It is indicated that the conjugate cam-driving mechanism could satisfy the die-cutting technology and even advance it.
本论文的主要工作包括如下内容：
(1)对曲柄肘杆机构进行运动学分析,结合模切工艺,掌握机构的运动变化规律；利用达朗贝尔原理对曲柄肘杆机构进行动态静力分析,掌握相关构件的受力情况。
(2)提出几何封闭共轭凸轮驱动动平台的运动方式,选择合适的运动规律,进行了共轭凸轮轮廓的反求设计研究。
(3)根据高副低代的原理,分析在不同运动规律下动平台的运动特性,并与原机构的运动特性进行对比,揭示新机构对改进模切过程的作用。
(4)建立了凸轮—从动件机构的动力学模型,对凸轮机构的动态特性进行分析。分析结果表明：机构的工作频率远小于系统自由振动的频率,工作端的动态响应接近静态运动规律,无需进行高速动态校核。
(5)利用VC与MATLAB编制了动平台驱动机构的选型分析演示界面。
通过课题研究,完成上述工作,达到预计目标,动平台共轭凸轮驱动机构能够满足模切工艺的需求并在一定程度上起到改善作用。
The driving mechanism of the moving platform is the key component of the die-cutting machine. Its function plays an important role on the die-cutting technology and decides the quality of the products, thus reflects the machine's performance. Though analyzing on the conventional dual-elbow-bar mechanism, the paper put forward a new scheme on the design of the driving mechanism, which use the conjugate cam instead. Then give a compare on the moving characteristics between two different kinds'mechanism.
The paper includes the key points done as follows:
(1)According to die-cutting technology, motion analysis of the dual-elbow-bar mechanism is done and the moving curve is acquired; then, force characteristics of the key components is analyzed.
(2)The conjugate cam-driving mechanism is proposed. By choosing adaptive moving law, the design on the conjugating cam is being researched and the contour of the cam is described.
(3)According to the formula of higher pair substitute equivalent linkage instead, the platform's moving characteristics under different motion laws is analyzed and compared with the original mechanism, then the impaction on the die-cutting technology is discussed.
(4)Kinetic model of the cam-follower mechanism is established, and force characteristics is analyzed. It is indicated that the cam mechanism's work frequency is smaller than the system's free vibration frequency, so that the work end's dynamic response has little difference with the static moving regulation and need not to be revised farther.
(5)The choosing and analyzing formula of the driving mechanism of the moving platform is compiled by using VC and MATLAB tools software.
Through research, the following work is done and the goal is almost achieved. It is indicated that the conjugate cam-driving mechanism could satisfy the die-cutting technology and even advance it.
引文
[1]魏瑞玲.印后原理与工艺[M].北京：印刷工业出版社,1995
[2]韩晓良.我国模切机发展现状[J].今日印刷,2005.(1)
[3]曹惟庆.连杆机构的分析与综合[M].北京：科学出版社,2001
[4]黄康生.机构学在印机设计的中应用[M].西安：西安理工大学
[5]黄颖为,张景霞.印刷机械计算机辅助设计.西安：西安理工大学
[6][日]牧野洋.自动机械机构学[M].北京：科学出版社,1980
[7]尚有轩.平压模切烫印机曲柄连杆和双肘杆机构的特点.印刷杂志,2002.(11)
[8]李桂红.模切机主切机构参数化设计及其优化的研究：[硕士学位论文][D].西安：西安理工大学,2004.1
[9]杨广义.动平台机构的特性分析与仿真研究：[硕士学位论文][D].西安：西安理工大学,2004.1
[10]唐锡宽,金德闻.机械动力学.北京：高等教育出版社,1983
[11]黄镇东,何大为.机械动力学[M].西北工业大学出版社,1989
[12]殷鸿梁,朱邦贤.间歇运动机构设计[M].上海：上海科学技术出版社,1996
[13]杨晓明.MW1050自动烫金模切机的动态研究：[硕士学位论文][D].西安：西安理工大学,2002
[14]张海燕.印刷机和印后加工设备[M].北京：中国轻工业出版社,2003.123
[15]吕庸厚.组合机构设计[M].上海：上海科学技术出版社,1994
[16]管荣法,汤从心.凸轮与凸轮机构基础[M].国防工业出版社,1985
[17]赵韩,丁爵曾.凸轮机构设计[M].北京：高等教育出版社,1996
[18]濮良贵,纪明刚.机械设计.高等教育出版社,1996.6
[19]师汉民.机械振动系统——分析、测试、建模、对策.2003
[20]肖学中,吴克坚.高速剑杆织机打纬共轭凸轮的研究[D].江苏南京：东南大学,2002
[21]冯昌伦.胶印机的使用与调节[M].北京：印刷工业出版社,2002.6
[22]张海燕,江祖勇.共轭凸轮递纸机构设计[J].机械设计与研究,2005,21
[23]J伏尔默.凸轮机构[M].郭连声,柴邦衡译.北京：机械工业出版社,1983
[24]王西珍,成刚虎.全自动平压平模切机肘杆机构精度分析及可靠性设计：硕士学位论文[D].西安：西安理工大学,2006.3
[25]张晓玲,房瑞明.下摆式递纸机构共轭凸轮的设计与研究[J].机械设计,2004.2(1)
[26]朱先梅,成刚虎.递纸机构中共轭凸轮的结构设计及其参数优化[D].陕西西安：西安理工大学印刷工程系,2004
[27]沈韶华,张晓玲.共轭凸轮机构的计算机辅助设计[J].包装工程,2005.40(5)
[28]肖亚彬.模切机活动平台驱动机构创新设计：硕士学位论文[D].西安：西安理工大学,2006.3
[29]常勇.关于摆动从动件共轭凸轮机构最小尺寸问题的讨论[D].集美大学学报,2004.9
[30]孙靖民.机械优化设计.北京：机械工业出版社,1989
[31]Neklutin.C.N.. Mechanisms and Cams for Automatic Machines:Influence of Dynamic Forces on High-speed Machine Component. American Elsevier, New York..1969
[32]Fan Y Chen. Mechanics and Design of Cam Mechanisms. Pergamon Press.1986
[33]Bagci C., Kurnool S. Exact response analysis and dynamic design of cam-follower systems using Laplace transforms.ASME Journal of Mechanical Design.1997
[34]Chew M, Chuang C H. Minimizing residual vibrations in high-speed cam-follower systems over a range of speeds. ASME Journal of Mechanical Design.1995
[35]Mahyuddin A I, Midha A, Bajaj A.K. Evaluation of parametric vibration and stability of flexible cam-follower systems. ASME Journal of Mechanical Design.1994
[36]Herman J.Vande Straete, Joris De Schutter. Hybrid Cam Mechanisms[J], IEEE/ASME TRANSACTIONS ON MECHATRONICS.1996,1
[37]Avinash Panga, Bhartendu Seth. Experimental study of hybrid cam mechanism[J], IEEE Conference on Robotics, Automation and Mechatronics Singapore,2004,1-3
[38]Delbert Tesar, Mathew G K. The Dynamic Synthesis, Analysis and Design of Modeled Cam Systems. University of Florida,1986
[39]Jensen P W, Cam Design and Manufacture, Marcel Dekker.Ins,1987
[40]C.H.Such., C.W.Radcliffe:Kinematics and mechanisms design. J.Wiley & sons.1978
[2]韩晓良.我国模切机发展现状[J].今日印刷,2005.(1)
[3]曹惟庆.连杆机构的分析与综合[M].北京：科学出版社,2001
[4]黄康生.机构学在印机设计的中应用[M].西安：西安理工大学
[5]黄颖为,张景霞.印刷机械计算机辅助设计.西安：西安理工大学
[6][日]牧野洋.自动机械机构学[M].北京：科学出版社,1980
[7]尚有轩.平压模切烫印机曲柄连杆和双肘杆机构的特点.印刷杂志,2002.(11)
[8]李桂红.模切机主切机构参数化设计及其优化的研究：[硕士学位论文][D].西安：西安理工大学,2004.1
[9]杨广义.动平台机构的特性分析与仿真研究：[硕士学位论文][D].西安：西安理工大学,2004.1
[10]唐锡宽,金德闻.机械动力学.北京：高等教育出版社,1983
[11]黄镇东,何大为.机械动力学[M].西北工业大学出版社,1989
[12]殷鸿梁,朱邦贤.间歇运动机构设计[M].上海：上海科学技术出版社,1996
[13]杨晓明.MW1050自动烫金模切机的动态研究：[硕士学位论文][D].西安：西安理工大学,2002
[14]张海燕.印刷机和印后加工设备[M].北京：中国轻工业出版社,2003.123
[15]吕庸厚.组合机构设计[M].上海：上海科学技术出版社,1994
[16]管荣法,汤从心.凸轮与凸轮机构基础[M].国防工业出版社,1985
[17]赵韩,丁爵曾.凸轮机构设计[M].北京：高等教育出版社,1996
[18]濮良贵,纪明刚.机械设计.高等教育出版社,1996.6
[19]师汉民.机械振动系统——分析、测试、建模、对策.2003
[20]肖学中,吴克坚.高速剑杆织机打纬共轭凸轮的研究[D].江苏南京：东南大学,2002
[21]冯昌伦.胶印机的使用与调节[M].北京：印刷工业出版社,2002.6
[22]张海燕,江祖勇.共轭凸轮递纸机构设计[J].机械设计与研究,2005,21
[23]J伏尔默.凸轮机构[M].郭连声,柴邦衡译.北京：机械工业出版社,1983
[24]王西珍,成刚虎.全自动平压平模切机肘杆机构精度分析及可靠性设计：硕士学位论文[D].西安：西安理工大学,2006.3
[25]张晓玲,房瑞明.下摆式递纸机构共轭凸轮的设计与研究[J].机械设计,2004.2(1)
[26]朱先梅,成刚虎.递纸机构中共轭凸轮的结构设计及其参数优化[D].陕西西安：西安理工大学印刷工程系,2004
[27]沈韶华,张晓玲.共轭凸轮机构的计算机辅助设计[J].包装工程,2005.40(5)
[28]肖亚彬.模切机活动平台驱动机构创新设计：硕士学位论文[D].西安：西安理工大学,2006.3
[29]常勇.关于摆动从动件共轭凸轮机构最小尺寸问题的讨论[D].集美大学学报,2004.9
[30]孙靖民.机械优化设计.北京：机械工业出版社,1989
[31]Neklutin.C.N.. Mechanisms and Cams for Automatic Machines:Influence of Dynamic Forces on High-speed Machine Component. American Elsevier, New York..1969
[32]Fan Y Chen. Mechanics and Design of Cam Mechanisms. Pergamon Press.1986
[33]Bagci C., Kurnool S. Exact response analysis and dynamic design of cam-follower systems using Laplace transforms.ASME Journal of Mechanical Design.1997
[34]Chew M, Chuang C H. Minimizing residual vibrations in high-speed cam-follower systems over a range of speeds. ASME Journal of Mechanical Design.1995
[35]Mahyuddin A I, Midha A, Bajaj A.K. Evaluation of parametric vibration and stability of flexible cam-follower systems. ASME Journal of Mechanical Design.1994
[36]Herman J.Vande Straete, Joris De Schutter. Hybrid Cam Mechanisms[J], IEEE/ASME TRANSACTIONS ON MECHATRONICS.1996,1
[37]Avinash Panga, Bhartendu Seth. Experimental study of hybrid cam mechanism[J], IEEE Conference on Robotics, Automation and Mechatronics Singapore,2004,1-3
[38]Delbert Tesar, Mathew G K. The Dynamic Synthesis, Analysis and Design of Modeled Cam Systems. University of Florida,1986
[39]Jensen P W, Cam Design and Manufacture, Marcel Dekker.Ins,1987
[40]C.H.Such., C.W.Radcliffe:Kinematics and mechanisms design. J.Wiley & sons.1978