六圆弧弧齿锥齿轮设计、啮合特性及仿真加工

发布时间：2018-02-15 05:25

本文关键词： 六圆弧齿廓静力学接触应力啮合特性六圆弧弧齿锥齿轮仿真加工　出处：《宁夏大学》2017年硕士论文　论文类型：学位论文

【摘要】：本文在多圆弧齿轮的基础上提出了一种新型的六圆弧齿廓,这种新齿廓工作齿面由六段圆弧构成。在啮合传动过程中,一个轴向齿距内最多可以存在六个接触点分别分布在六段工作圆弧上,分散了轮齿所受的载荷提高了承载能力。本次研究对六圆弧齿轮齿廓齿轮的基础特性进行了分析以及将六圆弧齿廓运用到弧齿锥齿轮上进行了初步的研究,对后续的深入研究打下基础。主要的研究成果如下:(1)通过对多圆弧齿轮齿型以及随着齿廓圆弧数的增加对齿轮接触力学性能提高的分析,提出六啮合线圆弧齿廓,给出齿型详细几何参数表。运用模拟展成加工的方法创建了三维模型。(2)运用ABAQUS对六圆弧齿轮的静力学接触应力求解,并与相同参数的多圆弧齿轮的进行对比,得到了六圆弧齿轮啮合点处的接触应力相对来说有所减小,从而承载能力增加的结论。(3)通过对六圆弧圆柱齿轮的啮合过程的分析,运用线图法划分出了多个区间;根据不同区间分类讨论,给出了啮合点数量及啮合齿数目与齿宽之间的函数,求解了啮合过程中多点啮合系数以及多对齿啮合系数,列出了计算表格,为以后六圆弧齿轮的设计参数的确定提供参照。(4)介绍了将新型齿廓运用到弧齿锥齿轮上的理论可行性以及点接触的传动原理,通过对加工刀具几何参数分析阐述了六啮合线弧齿锥齿轮传动过程中各个接触点的啮合顺序,计算了传递扭矩时的重合度,给出了一种求解啮合系数的方法。(5)通过对两种不同的铣齿机机械结构的分析,阐述了弧齿锥齿轮的假想平面轮的原理。建立加工所用机床坐标系,根据各个坐标系之间的位置关系由盘铣刀截面齿型坐标变换得到锥齿轮齿面方程。在VERICUT软件中模拟组装了五轴铣齿机,确定了毛坯参数以及床身调整参数;选用数控加工系统,编写NC代码,完成了仿真加工。
[Abstract]:In this paper, a new type of six-arc tooth profile is proposed based on multi-arc gear. The working surface of the new tooth profile is composed of six sections of circular arc. There may be at most six contact points in an axial tooth pitch distributed on six working arcs, The basic characteristics of the six circular arc gear profile gear are analyzed and the application of six circular arc tooth profile to the arc bevel gear is preliminarily studied. The main research results are as follows: 1) through the analysis of the tooth profile of multi-circular arc gear and the improvement of contact mechanical properties of gear with the increase of the number of circular arcs of tooth profile, the six meshing line circular arc tooth profile is put forward. In this paper, the detailed geometric parameter table of tooth shape is given. The three-dimensional model is created by using the method of simulation generating. (2) the static contact of six circular arc gears should be solved by ABAQUS, and compared with that of multi-circular arc gear with the same parameters. The conclusion that the contact stress at the meshing point of six circular arc gears is relatively reduced and the bearing capacity is increased is obtained. By analyzing the meshing process of six circular arc cylindrical gears, several sections are divided by using the graph method. According to the discussion of different interval classification, the function between the number of meshing points, the number of meshing teeth and the tooth width is given. The meshing coefficient and the meshing coefficient of many pairs of teeth in the course of meshing are solved, and the calculation table is given. This paper introduces the theoretical feasibility of applying the new tooth profile to the spiral bevel gear and the transmission principle of point contact for determining the design parameters of the six circular arc gears in the future. By analyzing the geometric parameters of machining tool, the meshing sequence of each contact point in the transmission process of six meshing line arc bevel gear is expounded, and the coincidence degree of transmission torque is calculated. In this paper, a method to solve the meshing coefficient is given. By analyzing the mechanical structure of two different milling machines, the principle of the hypothetical plane wheel of the spiral bevel gear is expounded, and the coordinate system of the machine tool used for machining is established. According to the position relation among coordinate systems, the bevel gear tooth surface equation is obtained by transforming the profile coordinates of the section teeth of the disc milling cutter. The five-axis gear milling machine is simulated and assembled in VERICUT software, the blank parameters and the adjustment parameters of the bed are determined, and the NC machining system is selected. NC code is written, and simulation processing is completed.
【学位授予单位】：宁夏大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TG61;TG659

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