本文選題：高分子齒輪 + 磨損曲線��； 參考：《濟(jì)南大學(xué)》2016年碩士論文

【摘要】：隨著高分子材料的迅速發(fā)展,高分子齒輪在機(jī)械性能、力學(xué)性能方面有了很大提高,推動(dòng)高分子齒輪從傳遞運(yùn)動(dòng)向傳遞動(dòng)力領(lǐng)域發(fā)展。由于在高速、重載時(shí)高分子齒輪溫升較快,當(dāng)超過(guò)材料的臨界溫度時(shí),齒輪極易軟化、磨損嚴(yán)重,最終磨損失效,因此預(yù)測(cè)高分子齒輪的壽命對(duì)齒輪發(fā)展有重要意義。目前,高分子齒輪設(shè)計(jì)以金屬齒輪參數(shù)作為設(shè)計(jì)依據(jù),這些參數(shù)是從金屬齒輪試驗(yàn)中得出,這與高分子齒輪實(shí)際工況不同存在較大誤差。為此開發(fā)設(shè)計(jì)高分子齒輪疲勞磨損試驗(yàn)裝置,以便于高分子齒輪動(dòng)力傳輸和失效機(jī)理的分析,以及研究齒輪設(shè)計(jì)參數(shù),為高分子齒輪設(shè)計(jì)制造提供理論依據(jù)和試驗(yàn)數(shù)據(jù)。本文通過(guò)高分子齒輪的摩擦磨損原理,研究出適用于高分子齒輪的壽命預(yù)測(cè)方法。分析高分子齒輪失效形式、磨損規(guī)律及磨損機(jī)理,建立高分子齒輪摩擦學(xué)、動(dòng)力學(xué)耦合模型,基于該模型分析高分子齒輪受力情況。根據(jù)Archard磨損計(jì)算模型建立高分子齒輪磨損率與轉(zhuǎn)數(shù)的數(shù)學(xué)模型,利用最小二乘法擬合出高分子齒輪磨損曲線,研究高分子齒輪疲勞磨損試驗(yàn)裝置工作原理。通過(guò)有限元軟件對(duì)高分子齒輪進(jìn)行應(yīng)力分析,得出齒輪嚙合最大應(yīng)力及最大應(yīng)力出現(xiàn)位置,利用力學(xué)公式計(jì)算得到齒輪能承受的最大扭矩32N?m,即高分子齒輪疲勞磨損試驗(yàn)裝置加載最大扭矩為30N?m。根據(jù)高分子齒輪疲勞磨損試驗(yàn)裝置的設(shè)計(jì)要求得出試驗(yàn)裝置的設(shè)計(jì)思路;根據(jù)該試驗(yàn)裝置的性能指標(biāo)要求確定試驗(yàn)裝置的總體結(jié)構(gòu);根據(jù)單軸支撐原理設(shè)計(jì)柔性加載系統(tǒng);根據(jù)封閉功率流原理設(shè)計(jì)該傳動(dòng)系統(tǒng),并計(jì)算該封閉系統(tǒng)功率Ps為1.1 KW。分析高分子齒輪試驗(yàn)裝置整體結(jié)構(gòu),總結(jié)出結(jié)構(gòu)特點(diǎn)及該試驗(yàn)裝置的優(yōu)勢(shì)。根據(jù)試驗(yàn)裝置總體設(shè)計(jì)、布局設(shè)計(jì)制備出試驗(yàn)裝置的本體部分;根據(jù)試驗(yàn)裝置的工作原理制定了試驗(yàn)步驟。
[Abstract]:With the rapid development of polymer materials, the mechanical and mechanical properties of polymer gears have been greatly improved, which promotes the development of polymer gears from the transfer of motion to the transfer of power. Due to the high speed and heavy load, the temperature rise of polymer gears is faster. When the material temperature exceeds the critical temperature, the gears are easy to soften, wear is serious, and the final wear failure, so it is important to predict the life of polymer gears for the development of gears. At present, the design of polymer gears is based on the parameters of metal gears. These parameters are derived from the experiments of metal gears, which are different from the actual conditions of polymer gears. In order to facilitate the analysis of the dynamic transmission and failure mechanism of polymer gears, and to study the design parameters of the gears, the fatigue wear test device of polymer gears is developed, which provides the theoretical basis and experimental data for the design and manufacture of polymer gears. Based on the principle of friction and wear of polymer gears, a method for predicting the life of polymer gears is developed in this paper. The failure form, wear law and wear mechanism of polymer gear are analyzed, and the coupling model of tribology and dynamics of polymer gear is established. Based on the model, the mechanical behavior of polymer gear is analyzed. According to the Archard wear calculation model, the mathematical model of the wear rate and rotation number of polymer gears was established. The wear curve of polymer gears was fitted by least square method, and the working principle of the fatigue wear test device for polymer gears was studied. Through the finite element analysis of polymer gear, the position of maximum stress and maximum stress in gear meshing is obtained. The maximum torque of the gear can be calculated by using the mechanical formula, that is, the maximum torque of the high molecular gear fatigue wear test device is 30 Nm. According to the design requirements of the high molecular gear fatigue wear test device, the design idea of the test device is obtained, the overall structure of the test device is determined according to the performance requirements of the test device, and the flexible loading system is designed according to the principle of uniaxial support. According to the principle of closed power flow, the transmission system is designed, and the power Ps of the closed system is calculated as 1.1 KW. The overall structure of the polymer gear test device is analyzed, and the structural characteristics and advantages of the test device are summarized. According to the overall design of the test device and the layout design, the body part of the test device is prepared, and the test steps are made according to the working principle of the test device.
【學(xué)位授予單位】：濟(jì)南大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：TH132.41;TQ317

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1 張金坤;高分子齒輪壽命預(yù)測(cè)及其疲勞磨損試驗(yàn)裝置設(shè)計(jì)[D];濟(jì)南大學(xué);2016年

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本文編號(hào)：1793469