新型渐开线少齿差行星减速器的设计研究

发布时间：2019-05-14 06:40

【摘要】：本文研究了一种用于小型传动机构的新型渐开线少齿差行星减速器，这种减速器具有刚度大、效率高、体积小等优点。本文在研究优化现有的渐开线少齿差行星减速器基础上，提出了一种新双偏心曲轴的少齿差行星减速机结构。该结构充分利用少齿差传动的原理，采用双偏心曲轴代替传统的单偏心曲轴和平衡块，通过在双偏心曲轴上安装两个相同的双联齿轮抵消少齿差机构运行中产生的惯性力，减轻了振动、噪声、发热等不利影响。本文采用封闭图法选取新型渐开线少齿差行星减速器内啮合齿轮副的变位系数，并且计算了齿轮副其他相关参数，从而完成了减速比30的新型渐开线少齿差行星减速器结构整体设计。运用ANSYS软件对减速器虚拟样机的曲轴、齿轮副和整机进行了静力学分析，得出其结构应力和变形量完全满足设计要求；运用ANSYS软件对减速器的虚拟样机进行了模态分析，得出其系统固有频率远高于输入频率，不会产生共振，并提出了设计的应注意加强某些关键部件的刚性和强度。制造出了新型渐开线少齿差行星减速器样机并进行了效率实验，此减速器样机的效率可达86.2%。本文主要创新点是研究优化了渐开线少齿差行星减速器的结构，把单偏心曲轴设计成双偏心曲轴的结构，，简化了渐开线行星少齿差减速器的结构，使整个减速器的性能趋于优良；总结了新型渐开线少齿差行星减速器系列的设计方法。
[Abstract]:In this paper, a new involute planet reducer with small tooth difference is studied, which has the advantages of high stiffness, high efficiency and small volume. On the basis of studying and optimizing the existing involute planet reducer with small tooth difference, a new structure of small tooth difference planet reducer with double eccentric crankshaft is proposed in this paper. The structure makes full use of the principle of low tooth difference transmission, adopts double eccentric crankshaft instead of traditional single eccentric crankshaft and balance block, and offsets the inertia force produced in the operation of small tooth difference mechanism by installing two same double gears on the double eccentric crankshaft. It reduces the adverse effects of vibration, noise, heating and so on. In this paper, the displacement coefficient of the internal meshing gear pair of a new involute planet reducer with small tooth difference is selected by using the closed graph method, and other related parameters of the gear pair are calculated. Thus, the overall design of the new involute less tooth difference planet reducer with deceleration ratio 30 is completed. The static analysis of the crankshaft, gear pair and the whole machine of the virtual prototype of the reducer is carried out by using ANSYS software, and it is concluded that the structural stress and deformation of the reducer fully meet the design requirements. The modal analysis of the virtual prototype of the reducer is carried out by using ANSYS software. It is concluded that the natural frequency of the reducer is much higher than the input frequency and will not produce resonance. It is proposed that attention should be paid to strengthening the rigidity and strength of some key components in the design. A new type of involute planet reducer with small tooth difference is manufactured and the efficiency experiment is carried out. the efficiency of the reducer prototype can reach 86.2%. The main innovation of this paper is to study and optimize the structure of involute planet reducer with small tooth difference. The single eccentric crankshaft is designed as the structure of double eccentric crankshaft, which simplifies the structure of involute planet less tooth difference reducer. The performance of the whole reducer tends to be excellent. The design method of a new series of involute planet reducer with small tooth difference is summarized.
【学位授予单位】：浙江工业大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH132.46

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