二齿差摆盘式活齿传动的结构与齿形分析

发布时间：2018-02-12 22:34

本文关键词： 二齿差摆盘式活齿传动齿形顶切　出处：《工程科学与技术》2017年S1期 　论文类型：期刊论文

【摘要】：摆盘式活齿传动作为一种轴向活齿传动,具有径向尺寸小的突出特点,但其应用受到自身结构复杂及载荷与力偶不平衡等因素的限制。作者通过理论计算、建模仿真、作图分析与控制变量等方法,运用Pro/E与MATLAB等软件,对摆盘式活齿传动进行了结构改进与齿形研究。在摆盘式活齿传动现有研究成果的基础上,通过理论计算推导出了摆盘式活齿传动的二齿差形式及相应的运动方程与齿形方程,设计出两相激波器的新结构;对特征零件端齿轮进行了3维建模并对齿面的曲率分布进行了仿真分析,分别研究了曲率沿分度圆柱面的变化情况及曲率在空间全齿面上的分布情况;通过质点的瞬时圆周运动模型确定了空间全齿面上的齿顶位置,推导出了齿顶处的坐标向量与曲率半径的计算式;研究了平面活齿传动中的顶切现象及原理,由此计算出二齿差摆盘式活齿传动中顶切的边界条件;用控制变量法分别分析了分度圆半径、传动比、振幅及活齿半径等参数对齿形的影响情况,运用相对偏差的概念在同一坐标系中研究各参数对齿形的影响程度的大小。研究发现:二齿差摆盘式活齿传动中端齿轮的实际齿顶点位于分度圆柱面的内部而不在柱面上;4个重要参数的变化如分度圆半径减小、传动比增大、振幅增大、活齿半径增大均将导致齿形收窄变尖并引发顶切,其中前两者的变化实质是改变了齿形的周向分布周期,且影响程度较大,是主要影响因素,而后两者的变化实际上改变了齿形的轴向分布范围。
[Abstract]:As an axial movable tooth transmission, the swing disk movable tooth transmission has the prominent characteristic of small radial size, but its application is limited by the factors such as complex structure, unbalanced load and couple, etc. The author models and simulates by theoretical calculation, modeling and simulation, etc. By using the software of Pro/E and MATLAB, the structure improvement and tooth profile study of swing disk movable tooth drive are carried out by means of drawing analysis and variable control. On the basis of the existing research results of pendulum disk movable tooth transmission, Through theoretical calculation, the two tooth difference form, the corresponding motion equation and tooth shape equation of swing disk movable tooth drive are deduced, and a new structure of two phase shock wave device is designed. The 3D modeling of the end gear of the characteristic part is carried out and the curvature distribution of the tooth surface is simulated and analyzed. The variation of curvature along the indexing cylindrical surface and the distribution of curvature on the spatial tooth surface are studied respectively. Through the instantaneous circular motion model of the particle, the position of the tooth top on the whole tooth surface is determined, the coordinate vector at the tooth top and the calculation formula of the curvature radius are derived, and the phenomenon and principle of the top cutting in the plane movable tooth transmission are studied. In this paper, the boundary conditions of top cutting in two tooth difference pendulum disk movable tooth drive are calculated, and the influence of parameters such as indexing circle radius, transmission ratio, amplitude and movable tooth radius on tooth shape are analyzed by the control variable method. By using the concept of relative deviation in the same coordinate system, the influence of each parameter on the tooth profile is studied. It is found that the actual tooth vertices of the middle end gear of the two tooth difference pendulum disk movable tooth drive are located inside the indexing cylindrical surface, but not in the same coordinate system. On the cylinder, the changes of four important parameters, such as the decrease of the radius of the indexing circle, The increase of transmission ratio, amplitude and radius of the movable teeth will cause the tooth profile to narrow and sharpen and lead to the top cutting. The change of the former two changes in essence is to change the period of the circumferential distribution of the tooth profile, and the influence degree is great, which is the main influencing factor. The change of the latter two actually changed the axial distribution range of tooth profile.
【作者单位】：四川大学制造科学与工程学院;
【基金】：2015年度四川大学-泸州市人民政府战略合作项目资助(2015CDLZ-G18)
【分类号】：TH132.41

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