弧齿锥齿轮真实齿面的测量重构及啮合性能分析

发布时间：2018-04-24 07:14

本文选题：弧齿锥齿轮 + 反求测量　；参考：《河南科技大学》2011年硕士论文

【摘要】：弧齿锥齿轮因为传动平稳、噪音小、承载能力及重合度高而被广泛应用于相交轴的传动中,但是因其齿面结构复杂、加工调整困难,在应用过程中此种齿轮还不能达到完全的互换,经常须配对加工,成对使用,且更换起来也很困难,由此造成的配件问题也越来越突出。弧齿锥齿轮数字化是弧齿锥齿轮闭环设计与制造技术中的关键步骤,而逆向工程技术做为先进制造技术的一个分支,通过对实物的参照设计,在只有实体而没有工程图纸的情况下,通过测量设备来获取实体的三维数据,利用三维重构软件生成实体的几何模型,并在此基础上得到数控加工程序,控制数控机床加工出合格的产品。将逆向工程技术思想应用到弧齿锥齿轮闭环制造技术中,重构了真实齿面的弧齿锥齿轮三维模型,为接触仿真、运动仿真分析提供了精确的模型,也为齿轮修形、齿轮优化设计及数控加工提供了依据,具有重要的理论意义和应用价值。本文的研究内容及成果如下: 1.根据弧齿锥齿轮数字化集成技术的要求,确定了具体的实施方案,即反求测量—反求分析计算—真实齿面测量—建模。 2.根据现有螺旋锥齿轮逆向设计的现状,具体到弧齿锥齿轮的逆向设计,基于弧齿锥齿轮齿向线和齿廓线测量反求其设计参数及其部分加工参数,完成了弧齿锥齿轮基于特征线的逆向反求,得到了反求数据。 3.应用齿轮啮合原理和微分几何学,依据锥齿轮设计与加工的理论,推导出了弧齿锥齿轮大小轮的理论齿面方程,并按照坐标变换原理,规划了齿面测量网格,求解出了理论齿面的三维坐标值。 4.运用CNC齿轮测量中心,基于齿面网格理论坐标值,测量了一对经过滚检合格的弧齿锥齿轮,得到了真实齿面的三维坐标值,同时也获得了齿面误差图,运用CATIA强大的曲面造型能力,重构了基于真实齿面的CAD模型,完成了弧齿锥齿轮的数字化。 5.根据锥齿轮接触分析技术,求解了真实齿面方程及加工参数,对真实齿面进行了TCA分析,得到了弧齿锥齿轮啮合的接触路径和传动误差曲线。
[Abstract]:The spiral bevel gear is widely used in the transmission of the intersecting shaft because of its smooth transmission, small noise, high bearing capacity and high coincidence degree. But because of the complex structure of the tooth surface, the machining adjustment is difficult. In the process of application, this kind of gear can not be completely interchanged. It is often necessary to match the work, use it in pairs, and make it difficult to replace it. The problem of fitting parts is becoming more and more prominent. The digitalization of spiral bevel gear is the key step in the closed loop design and manufacturing technology of the spiral bevel gear, and the reverse engineering technology is a branch of the advanced manufacturing technology. By the reference design of the object, the object is obtained by the measuring equipment in the case of only the entity without the engineering drawings. On the basis of the 3D data, the geometric model of the entity is generated by the 3D reconstruction software, and the NC machining program is obtained on this basis to control the qualified products. The reverse engineering technology is applied to the closed loop manufacturing technology of the spiral bevel gear, and the three-dimensional model of the arc tooth bevel gear is reconstructed for the contact simulation. The dynamic simulation analysis provides an accurate model. It also provides a basis for gear modification, gear optimization design and NC machining, which has important theoretical significance and application value.
The contents and results of this study are as follows:
1. according to the requirements of the digital integrated technology of spiral bevel gear, the concrete implementation scheme is determined, namely, reverse measurement, reverse analysis and calculation - real tooth surface measurement - modeling.
2. according to the present situation of the reverse design of the spiral bevel gear, the reverse design of the spiral bevel gear is made. Based on the curve and profile of the spiral bevel gear, the design parameters and the parts of the machining parameters are calculated. The reverse reverse process of the spiral bevel gear based on the characteristic line is completed, and the reverse data is obtained.
3. the theory of gear meshing and differential geometry is applied. Based on the theory of bevel gear design and machining, the theoretical tooth surface equation of the spiral bevel gear wheel is derived, and the mesh of tooth surface measurement is planned according to the coordinate transformation principle, and the three-dimensional coordinate value of the theoretical tooth surface is solved.
4. using the CNC gear measurement center and based on the theoretical coordinates of the tooth surface mesh, a pair of qualified spiral bevel gear has been measured, and the three-dimensional coordinate value of the real tooth surface is obtained. At the same time, the tooth surface error map is obtained. The CAD model based on the real tooth surface is reconstructed by using the powerful surface modeling ability of CATIA, and the number of spiral bevel gear is completed. Word - oriented.
5. according to the contact analysis technology of bevel gear, the real tooth surface equation and processing parameters are solved. The real tooth surface is analyzed by TCA, and the contact path and the transmission error curve of the spiral bevel gear meshing are obtained.

【学位授予单位】：河南科技大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH132.41

【参考文献】