螺旋齿轮成形磨削及砂轮修整技术研究

发布时间：2018-03-11 16:22

本文选题：渐开线螺旋齿轮　切入点：成形磨削　出处：《陕西理工学院》2015年硕士论文　论文类型：学位论文

【摘要】：齿轮传动的应用有着悠久的历史,是机械传动中的重要形式之一,渐开线螺旋齿轮由于其诸多优点逐渐在机械传动中得到广泛应用。与常用的渐开线齿轮加工方法相比,成形磨削是一种高精度、高效率、低成本的硬齿面齿轮精加工方法,成形法磨削渐开线螺旋齿轮时齿轮的精度由成形砂轮的廓形精度决定,如何修整出高精度的砂轮廓形,并精确地加工出齿轮渐开螺旋面是齿轮成形磨削研究的重要内容之一。以解析几何知识与齿轮啮合原理作为理论基础,通过分析砂轮成形磨削渐开螺旋面工件时二者的相对位置关系,建立渐开线螺旋齿轮的数学模型,由渐开螺旋面与砂轮的相切特性推导出空间接触线方程,通过坐标变换将空间接触线方程转换到砂轮坐标系中,得到砂轮轴向截形方程。对砂轮正确廓形的性质与接触线的性质进行研究分析,为以后的计算奠定理论基础。求解接触线方程对计算砂轮截形非常重要,而超越方程是接触线方程求解的关键。选用MATLAB数值分析方法中适用的函数命令求解超越方程,以此计算出砂轮的正确廓形离散点。根据砂轮的截形数据和修整器的结构特点设计出砂轮的修整方法和路线,对砂轮修整过程进行R参数编程,设计出采用CNC砂轮修整器修整砂轮的数控程序。为验证砂轮截形数据与数控修整程序的正确性,对螺旋齿轮进行磨削试验。为使成形磨削加工后的结果更方便、简单的显示出来,采用MATLAB中的GUIDE模块设计开发出可用于计算砂轮廓形和自动生成数控程序的螺旋齿轮成形磨削用砂轮修整软件,改变输入的参数值砂轮廓形和数控程序也会相应改变,使应用更简便化。
[Abstract]:The application of gear transmission has a long history and is one of the important forms of mechanical transmission. Involute helical gear has been widely used in mechanical transmission because of its many advantages. Forming grinding is a kind of high precision, high efficiency and low cost finishing method for hard gear. The precision of gear in grinding involute helical gear by forming method is determined by the profile accuracy of forming grinding wheel, how to repair the profile of high precision grinding wheel, The precise machining of gear involute helical surface is one of the important contents of gear forming grinding. The theoretical basis is the knowledge of analytic geometry and the meshing principle of gear. The mathematical model of involute helical gear is established by analyzing the relative position relation of grinding workpiece with involute helical surface in grinding with grinding wheel, and the spatial contact line equation is derived from the tangent characteristic of involute helical surface and grinding wheel. By transforming the space contact line equation into the grinding wheel coordinate system, the axial section equation of the grinding wheel is obtained. The properties of the correct profile and the contact line of the grinding wheel are studied and analyzed. The solution of contact line equation is very important to the calculation of grinding wheel truncation, and transcendental equation is the key to the solution of contact line equation. The function command used in MATLAB numerical analysis method is used to solve transcendental equation. According to the cutting data of the grinding wheel and the structural characteristics of the dresser, the dressing method and route of the grinding wheel are designed, and the R parameter programming for the dressing process of the grinding wheel is carried out. In order to verify the correctness of grinding wheel profile data and NC dressing program, the grinding test of helical gear is carried out. In order to make the results of forming grinding more convenient, the NC program of grinding wheel with CNC grinding wheel dresser is designed. It is shown simply that the grinding wheel dressing software for helical gear forming grinding can be developed by using GUIDE module in MATLAB, which can be used to calculate the profile of grinding wheel and generate NC program automatically. The profile of the grinding wheel and the NC program will be changed accordingly by changing the input parameter value of the grinding wheel, which makes the application easier.
【学位授予单位】：陕西理工学院
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TG743;TG616

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