弧面分度凸轮机构刚柔耦合动力学研究

发布时间：2018-09-17 08:41

【摘要】：弧面分度凸轮机构具有精确的传动、导向和控制多种功能，广泛应用于烟草、印刷、制药等各种自动机械。目前，，弧面分度凸轮机构设计主要是基于静力学和运动学的设计，基本不涉及动力学问题。由于机构在运行时存在周期性的惯性力矩，使机构的实际输出与理论值有一定差距。由于弧面分度凸轮机构的发展趋势为高转速，高分度精度，其在运行过程中的动态性能是人们重点关注的要素。本文以机械系统动力学为基础，建立多自由度的弧面分度凸轮机构动力学模型。利用ADAMS及ANSYS，根据动力学模型建立弧面分度凸轮机构的虚拟样机进行动力学仿真，研究其动态性能。主要内容如下： (1)研究了弧面分度凸轮机构的主要机构参数，详细分析了影响机构动力学性能的因素，为准确的研究机构动态性能提供了充足的理论基础。 (2)根据机械系统动力学，重点研究弧面分度凸轮的动力学数学模型。采用集中质量法，建立多自由度的弧面分度凸轮机构动力学模型，为虚拟样机动态性能分析提供理论依据。 (3)研究弧面分度凸轮机构输出轴的ANSYS的模态分析。 (4)通过ADAMS及ANSYS建立弧面分度凸轮机构的刚柔耦合虚拟样机并进行动力学仿真，验证动力学数学模型的正确性。 (5)研究仿真数据，综合分析不同机构参数和工况对弧面分度凸轮机构的动力学性能的影响。
[Abstract]:The globoidal indexing cam mechanism has many functions, such as precise transmission, guidance and control, and is widely used in tobacco, printing, pharmaceutical and other automatic machinery. At present, the design of globoidal indexing cam mechanism is mainly based on statics and kinematics. Due to the periodic inertia moment of the mechanism in operation, the actual output of the mechanism is far from the theoretical value. Because the development trend of globoidal indexing cam mechanism is high rotational speed and high indexing precision, the dynamic performance of globoidal indexing cam mechanism in operation process is the key element that people pay attention to. On the basis of mechanical system dynamics, the dynamic model of globoidal indexing cam mechanism with multiple degrees of freedom is established in this paper. The virtual prototype of globoidal indexing cam mechanism was established by ADAMS and ANSYS, according to the dynamic model and its dynamic performance was studied. The main contents are as follows: (1) the main mechanism parameters of globoidal indexing cam mechanism are studied, and the factors influencing the dynamic performance of the mechanism are analyzed in detail. It provides a sufficient theoretical basis for the accurate study of the dynamic performance of the mechanism. (2) according to the dynamics of the mechanical system, the dynamic mathematical model of the globoidal indexing cam is studied emphatically. The dynamic model of globoidal indexing cam mechanism with multiple degrees of freedom is established by means of lumped mass method. It provides a theoretical basis for dynamic performance analysis of virtual prototyping. (3) Modal analysis of the output shaft of globoidal indexing cam mechanism is studied. (4) the rigid-flexible coupling virtual of globoidal indexing cam mechanism is established by ADAMS and ANSYS. The pseudo prototype is simulated by dynamics. The correctness of the dynamic mathematical model is verified. (5) the simulation data are studied and the influence of different mechanism parameters and working conditions on the dynamic performance of the globoidal indexing cam mechanism is analyzed synthetically.
【学位授予单位】：陕西科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TH112.2

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