【摘要】：弧面分度凸輪機構具有精確的傳動、導向和控制多種功能，廣泛應用于煙草、印刷、制藥等各種自動機械。目前，，弧面分度凸輪機構設計主要是基于靜力學和運動學的設計，基本不涉及動力學問題。由于機構在運行時存在周期性的慣性力矩，使機構的實際輸出與理論值有一定差距。由于弧面分度凸輪機構的發(fā)展趨勢為高轉速，高分度精度，其在運行過程中的動態(tài)性能是人們重點關注的要素。 本文以機械系統(tǒng)動力學為基礎，建立多自由度的弧面分度凸輪機構動力學模型。利用ADAMS及ANSYS，根據(jù)動力學模型建立弧面分度凸輪機構的虛擬樣機進行動力學仿真，研究其動態(tài)性能。主要內容如下： (1)研究了弧面分度凸輪機構的主要機構參數(shù)，詳細分析了影響機構動力學性能的因素，為準確的研究機構動態(tài)性能提供了充足的理論基礎。 (2)根據(jù)機械系統(tǒng)動力學，重點研究弧面分度凸輪的動力學數(shù)學模型。采用集中質量法，建立多自由度的弧面分度凸輪機構動力學模型，為虛擬樣機動態(tài)性能分析提供理論依據(jù)。 (3)研究弧面分度凸輪機構輸出軸的ANSYS的模態(tài)分析。 (4)通過ADAMS及ANSYS建立弧面分度凸輪機構的剛柔耦合虛擬樣機并進行動力學仿真，驗證動力學數(shù)學模型的正確性。 (5)研究仿真數(shù)據(jù)，綜合分析不同機構參數(shù)和工況對弧面分度凸輪機構的動力學性能的影響。
[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.
【學位授予單位】：陜西科技大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TH112.2

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本文編號：2245328