平面连杆机构运动及动力分析

毕业设计报告(论文) 报告(论文)题目：平面连杆机构运动及动力分析作者所在系部：机械工程系作者所在专业：机械设计制造及其自动化作者所在班级： B07115 作者姓名：作者学号：指导教师姓名：完成时间： 2011年6月北华航天工业学院教务处摘要平面连杆机构是一种应用十分广泛的机构。

平面连杆机构全部采用低副连接，因而结构简单易于制造，结实耐用，不易磨损，适于高速重载；运动低副具有良好的匣形结构，无需保养，适于极度污染或腐蚀而易出现问题的机器中；平面连杆机构能够实现多种多样复杂的运动规律，而且结构的复杂性不一定随所需完成的运动规律性的复杂程度而增加；平面连杆机构还具有一个独特的优点，就是可调性，即通过改变机构中各杆件长度，从而方便地改变了原机构的运动规律和性能。

连杆机构由于结构上的特点在各种机械行业中被广泛的采用。

通过对连杆机构的设计，可以实现不同的运动规律，满足预定的位置要求和满足预定的轨迹要求。

机构运动及动力分析的目的是分析各个构件的位移、、角加速度以及受力，分析构件上某点的位置、轨迹、速度和加速度等。

这种方法能给出各运动参数与机构尺寸间的解析关系及写出机构某些点的轨迹方程式，能帮助我们合理地选择机构的尺寸，从而对某一机构作深入的系统研究。

平面连杆机构运动及动力分析，就是以连杆机构作为研究对象，对其各个运动件之间的关系公式进行推导，应用现代设计理论方法和有关专业知识进行系统深入地分析和研究，探索掌握其运动规律，讨论重要参数间的关系。

关键词：平面连杆机构运动性能仿真运动规律AbstractPlanar linkage mechanisms are used widely. Planar linkage mechanisms take the use of lower pair connection, so its structure is easy to manufacture, durable and resistant, especially suitable for high-speed and heavy-duty; lower pair sports has a good box-shaped structure, without maintenance, which is fit for machines working in extreme contamination or often coming with problems because of corrosion; planar linkage mechanism not only can achieve a variety of complex movement, but also the more complex movem ent doesn’t go with more complex structure; what gives linkage a unique advantage is that the motive rules and performance of the original mechanism will change with the length of the bar. As a result, linkage mechanisms are widely used in mechanical industries. By changing the design of linkage mechanisms, it can achieve different motive rules in order to move as the intended location and trajectory.The analysis of mechanism’s motion and power is aimed at each linkage mechanism’s location, speed, angle acceleration and power, even those of some point of linkage mechanisms. This method can give the motion parameters and body size between the analytic relationship and trajectory equations of some point in the bar, which can help us choose a reasonable choice of mechanisms size, and thus to have further study about the system of some mechanisms.The research of simulation of planar linkage mechanisms is to infer relative formers about every motive bar by studying the linkage mechanisms. Going further study and analyze, by applying modern design theory method and relevant professional knowledge is to obtain motive rules of it, discuss the relationship of important parameters.Key Words: Planar Linkage Mechanisms Kinematical Performance SimulationComputer Aided Design目录摘要....................................................................Abstract....................................................................第1章绪论.................................................................1.1 本课题的选题背景 ...................................................1.2 目前国内外研究概况 .................................................1.3 连杆机构 ...........................................................1.3.1 连杆机构的概念及特点.........................................1.3.2 连杆机构的地位和作用.........................................1.3.3 连杆机构的发展及现状.........................................1.4 连杆机构的运动及动力分析 ...........................................1.4.1 运动及动力分析需完成的工作...................................1.4.2 平面连杆机构的运动及动力分析.................................1.5 本课题的研究内容 ...................................................1.5.1 课题的提出...................................................1.5.2 研究目标和研究内容...........................................1.5.3 拟解决的关键问题.............................................1.6 本章小节 ........................................................... 第2章连杆机构运动规律.....................................................2.1 研究连杆机构运动规律的目的 .........................................2.2 运动参数公式的推导 .................................................2.2.1 位置公式的推导...............................................2.2.2 速度公式的推导...............................................2.2.3 加速度公式的推导.............................................2.3 运动关系的分析 .....................................................2.3.1 位置关系曲线.................................................2.3.2 角速度关系曲线...............................................2.3.3 角加速度关系曲线.............................................2.4 运动结果分析 .......................................................2.5 本章小结 ........................................................... 第3章连杆机构动力分析.....................................................3.1 研究连杆机构动力规律的目的 .........................................3.2动力参数公式的推导..................................................3.2.1 运动副中反力的推导...........................................3.2.2 曲柄上平衡力矩的推导.........................................3.3 动力关系的分析 .....................................................3.3.1 运动副中反力曲线.............................................3.3.2 曲柄平衡力矩关系曲线.........................................2.4 动力结果分析 .......................................................3.5 本章小结 ........................................................... 第4章总结.................................................................4.1 总结 ...............................................................4.2 展望 ............................................................... 致谢.................................................................... 参考文献....................................................................第1章绪论1.1 本课题的选题背景平面连杆机构是由若干刚性构件用低副联接而成的平面机构，故又称平面低副机构。