平面连杆机构运动误差分析系统的开发

发布时间：2018-03-22 21:15

本文选题：平面连杆机构　切入点：运动分析　出处：《东北大学》2012年硕士论文　论文类型：学位论文

【摘要】：平面连杆机构全部采用低副连接,其结构简单易于制造,结实耐用,耐磨损。平面连杆机构可以实现多种运动规律,并且可以通过改变机构中各杆件长度,方便地改变机构的运动规律和性能,因而连杆机构在各种机械行业中被广泛的应用。由于连杆机构的零件在加工和装配过程中不可避免地存在制造误差和装配误差,连杆的传动链也比较长,这些误差会累加,必然会对连杆机构的运动特性产生影响,造成偏离理想情况下的位置误差,影响机构的传动质量。因此,开展对平面连杆机构的运动误差分析有着较大实际意义。目前所见到的多数机构误差分析方法,一般是只针对某一具体机构进行运动误差分析,分析方法不具有通用性。本文在平面连杆机构基本杆组法运动分析的基础上,考虑杆长误差和装配误差以及主动件转角误差,采用微分法,对运动分析中的位置方程全微分,推导出了连杆机构位置误差表达式。基于Visual C++6.0编制了杆组误差分析程序,并通过建立界面进行程序封装。开发平面连杆机构的运动误差分析软件。该软件不是针对一种平面连杆机构进行误差分析,而是,可以根据平面连杆机构的组成,通过调用相应的杆组程序,而求得平面连杆机构的位置误差,并以窗口的形式显示运动分析线图、运动误差分析线图。软件交互性良好。具有一定的通用性。
[Abstract]:The planar linkage mechanism all adopts the low pair connection, its structure is simple and easy to manufacture, strong and durable, wear-resistant. The planar linkage mechanism can realize a variety of motion laws, and can change the length of each member in the mechanism. It is convenient to change the movement law and performance of the mechanism, so the linkage mechanism is widely used in various mechanical industries. Because manufacturing errors and assembly errors inevitably exist in the machining and assembling process of connecting rod mechanism, and the transmission chain of connecting rod is also relatively long, these errors will accumulate, which will inevitably have an impact on the kinematic characteristics of the linkage mechanism. Therefore, it is of great practical significance to analyze the kinematic error of the planar linkage mechanism because of its deviation from the ideal position error and affect the transmission quality of the mechanism. At present, most of the mechanism error analysis methods are generally aimed at a specific mechanism, but the analysis method is not universal. In this paper, based on the kinematic analysis of the basic bar group method of planar linkage mechanism, Considering the error of rod length and assembly and the error of rotation angle of active part, the differential method is used to fully differential the position equation in motion analysis, and the expression of position error of linkage mechanism is deduced. Based on Visual C 6. 0, the program of error analysis of rod group is programmed. The software of kinematic error analysis of planar linkage mechanism is developed. The software is not for error analysis of a planar linkage mechanism, but can be based on the composition of planar linkage mechanism. The position error of the planar linkage mechanism is obtained by calling the corresponding rod group program, and the motion analysis diagram and the motion error analysis diagram are displayed in the form of window. The software has good interactivity and has certain generality.
【学位授予单位】：东北大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH112

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