保证齿轮质量的结构和工艺措施研究

发布时间：2018-12-23 10:28

【摘要】：现代机器制造业中机器的功率需求不断增大，而同时机器的尺寸和重量却要求减小，故此，对其中最重要的传动零件“齿轮”的强度和精度指标提出了越来越高的要求。相应地，近年来我国齿轮行业推广使用硬齿面，要求其制造精度提高到5~6级，这在实际贯彻中仍有相当的困难，本文即以硬齿面齿轮为研究对象，研究结构—工艺方法以控制其质量的系统技术手段，，因而本文的研究工作不但具有一定的理论意义，也有着切实的实用价值。本文提出工艺过程综合优化的概念。工艺过程的组织不仅仅是为了得到产品，而且要得到加工中零件误差改变的信息，并根据这些信息采取优化的工艺解，即综合考虑各有关因素来最有效地达到所需要的精度和强度质量指标。为了提高实验工效，降低成本，本论文工作中采用了齿轮模型试验的方法。本文就结构、材料、机械加工、热处理、检测等因素对机器零件质量的影响进行了分析，采用数理统计方法对结构、工艺因素对零件质量指标的影响予以评估，将零件进行结构—工艺性分类，利用系统分析的方法，建立起零件的结构元素与制造工艺和生产组织间关系。以在热处理中零件能保证变形最小为目标，本文研讨了如何按系统分析的方法合理的设计零件结构，通过定量估算结构与热处理零件变形元素各方案的办法确定出最优结构方案，建立了齿轮热处理模型，并通过具体实例予以检验。以齿轮作为典型零件，本文研究了其结构—工艺因素对加工精度的影响。通过对齿轮模型分类，并采用概率论与数理统计方法来评估在热处理过程中零件几何特征量对模型变形的影响，以大量数据及图表对零件结构因素对其精度指标的影响予以评估和分析。本章研究工作对硬齿面齿轮加工精度的提高具有重要的参考意义。
[Abstract]:In the modern machine manufacturing industry, the power demand of the machine is increasing, while the size and weight of the machine are reduced. Therefore, the strength and precision of the most important transmission part, "gear", are demanded more and more high. Accordingly, in recent years, the hard tooth face is widely used in the gear industry of our country, and its manufacturing precision is required to be raised to 5 ~ 6 grade, which is still quite difficult in the actual implementation. This paper takes the hard tooth face gear as the research object. The study of structure-process method to control the quality of the system technology means, so this study not only has certain theoretical significance, but also has practical value. In this paper, the concept of process synthesis optimization is proposed. The organization of the process is not only to obtain the product, but also to obtain the information about the error change of the parts in the process, and to take the optimized process solution based on this information. That is to consider all the relevant factors to achieve the required accuracy and strength of the most effective quality index. In order to improve the experimental efficiency and reduce the cost, this paper adopts the method of gear model test. In this paper, the influence of structure, material, machining, heat treatment, testing and other factors on the quality of machine parts is analyzed, and the influence of structure and process factors on the quality of parts is evaluated by means of mathematical statistics. The structure-process classification of the parts is carried out, and the relationship between the structural elements of the parts and the manufacturing process and production organization is established by the method of systematic analysis. In order to ensure the minimum deformation of the parts in heat treatment, this paper discusses how to design the structure of the parts reasonably according to the method of systematic analysis. The optimal structure scheme is determined by quantitative estimation of deformation elements of structure and heat treatment parts. The heat treatment model of gears is established and tested by concrete examples. Taking gear as a typical part, the influence of structure-process factors on machining accuracy is studied in this paper. By classifying gear models and using probability theory and mathematical statistics, the effects of geometric characteristics of parts on model deformation during heat treatment are evaluated. The influence of structural factors on precision index is evaluated and analyzed with a large amount of data and charts. The research work in this chapter has important reference significance for improving the machining accuracy of hard gear.
【学位授予单位】：燕山大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH132.41

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