發(fā)布時(shí)間：2018-12-23 10:28

【摘要】：現(xiàn)代機(jī)器制造業(yè)中機(jī)器的功率需求不斷增大，而同時(shí)機(jī)器的尺寸和重量卻要求減小，故此，對(duì)其中最重要的傳動(dòng)零件“齒輪”的強(qiáng)度和精度指標(biāo)提出了越來(lái)越高的要求。相應(yīng)地，近年來(lái)我國(guó)齒輪行業(yè)推廣使用硬齒面，要求其制造精度提高到5~6級(jí)，這在實(shí)際貫徹中仍有相當(dāng)?shù)睦щy，本文即以硬齒面齒輪為研究對(duì)象，研究結(jié)構(gòu)—工藝方法以控制其質(zhì)量的系統(tǒng)技術(shù)手段，，因而本文的研究工作不但具有一定的理論意義，也有著切實(shí)的實(shí)用價(jià)值。 本文提出工藝過(guò)程綜合優(yōu)化的概念。工藝過(guò)程的組織不僅僅是為了得到產(chǎn)品，而且要得到加工中零件誤差改變的信息，并根據(jù)這些信息采取優(yōu)化的工藝解，即綜合考慮各有關(guān)因素來(lái)最有效地達(dá)到所需要的精度和強(qiáng)度質(zhì)量指標(biāo)。為了提高實(shí)驗(yàn)工效，降低成本，本論文工作中采用了齒輪模型試驗(yàn)的方法。 本文就結(jié)構(gòu)、材料、機(jī)械加工、熱處理、檢測(cè)等因素對(duì)機(jī)器零件質(zhì)量的影響進(jìn)行了分析，采用數(shù)理統(tǒng)計(jì)方法對(duì)結(jié)構(gòu)、工藝因素對(duì)零件質(zhì)量指標(biāo)的影響予以評(píng)估，將零件進(jìn)行結(jié)構(gòu)—工藝性分類，利用系統(tǒng)分析的方法，建立起零件的結(jié)構(gòu)元素與制造工藝和生產(chǎn)組織間關(guān)系。 以在熱處理中零件能保證變形最小為目標(biāo)，本文研討了如何按系統(tǒng)分析的方法合理的設(shè)計(jì)零件結(jié)構(gòu)，通過(guò)定量估算結(jié)構(gòu)與熱處理零件變形元素各方案的辦法確定出最優(yōu)結(jié)構(gòu)方案，建立了齒輪熱處理模型，并通過(guò)具體實(shí)例予以檢驗(yàn)。 以齒輪作為典型零件，本文研究了其結(jié)構(gòu)—工藝因素對(duì)加工精度的影響。通過(guò)對(duì)齒輪模型分類，并采用概率論與數(shù)理統(tǒng)計(jì)方法來(lái)評(píng)估在熱處理過(guò)程中零件幾何特征量對(duì)模型變形的影響，以大量數(shù)據(jù)及圖表對(duì)零件結(jié)構(gòu)因素對(duì)其精度指標(biāo)的影響予以評(píng)估和分析。本章研究工作對(duì)硬齒面齒輪加工精度的提高具有重要的參考意義。
[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.
【學(xué)位授予單位】：燕山大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類號(hào)】：TH132.41

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