《平行分度凸轮机构的参数化建模与运动仿真》-毕业论文.doc

平行分度凸轮机构的参数化建模与运动仿真 摘 要 凸轮是一具有曲面轮廓的构件，一般多为原动件（有时为机架）；当凸轮为原动件时，通常作等速连续转动或移动，而从动件则按预期输出特性要求作连续或间隙的往复运动、移动或平面复杂运动。 本文主要介绍凸轮的大体概念与凸轮廓线的设计计算，以及后期使用Pro/E软件仿真其廓线。 凸轮轮廓曲线是凸轮机构设计的关键，常用的设计方法有解析法和图解法。本文将对这两这种方法进行大致分析与应用设计，利用Pro/E软件绘制凸轮机构实体模型，并用Pro/E软件自带的Pro/MECHANICA Motion插件设计凸轮机构运动模型，进行机构运动学仿真分析，可以较准确掌握机械产品零部件的位移、速度和加速度等动力学参数，进而可分析机构动作的可靠性。 主要技术要求为：熟悉凸轮设计基本原理及相关理论计算；凸轮机构运动仿真及受力分析；指定内容的翻译和Pro/E软件的熟练应用。 本文将重点研究平行分度凸轮建模，受力分析和运动仿真与分析。通过理论上的计算和研究，结合图解以及解析的方法，算出凸轮廓线的大致数据，用Pro/E软件将其绘制出，进行运动仿真，记录和研究其位移、速度和加速度等动力参数，最后分析出机构动作的可靠性。使以后工作中，可以更准确掌握机械产品零部件的动力方面个参数，减少事故的发生，降低设计的难度。 关键词：凸轮，PRO/E，三维造型，仿真 Parallel indexing cam mechanism of parametric modeling and motion simulation Abstract Cam is a component with a surface profile is generally more dynamic pieces of the original (sometimes for the rack), when the cam piece to its original form, it is usually in a row for the constant rotation or move, and the follower output characteristics according to the requirements expected for continuous or reciprocating motion of the space, move, or the complexity of sports plane. This paper mainly introduces the general concept of the cam and cam profile design and calculation, and the latter the use of Pro / E software simulation of its profile. Cam cam curve design is the key to the design of methods commonly used analytical method and graphical method. In this paper, two such methods will be more or less analysis and application design, use of Pro/E software cam solid model rendering, and Pro / E software comes with the Pro/MECHANICA Motion cam plug design movement model, the kinematics Simulation can b a more accurate knowledge of machinery parts and components of displacement, velocity and acceleration, such as kinetic parameters, which can analyze the reliability of body movement. The main technical requirements are:familiar with the basic principles of cam design and related theoretical calculation; cam mechanism motion simulation and stress analysis; specify the contents of the translation an