定日鏡傳動系統(tǒng)精度分析與實(shí)驗(yàn)研究
本文選題:定日鏡傳動系統(tǒng) 切入點(diǎn):傳動精度 出處:《重慶大學(xué)》2012年碩士論文 論文類型:學(xué)位論文
【摘要】:定日鏡傳動是由行星齒輪傳動、新型移動基圓變厚齒輪傳動副以及雙環(huán)面蝸桿副組合而成的一種新型傳動機(jī)構(gòu),其中,雙環(huán)面蝸桿副和新型變齒厚齒輪傳動副具有實(shí)現(xiàn)小體積、高精度、大剛度、小側(cè)隙(側(cè)隙可調(diào))和大承載能力的特點(diǎn),并發(fā)揮環(huán)面蝸桿傳動具有大速比,高效率,長壽命,結(jié)構(gòu)緊湊,運(yùn)動平穩(wěn),噪聲低,對上游誤差有收斂作用,平均分度誤差小,常用于精密圓分度機(jī)構(gòu)等特點(diǎn),且環(huán)面蝸桿傳動隨工作時間的延伸,齒面接觸狀態(tài)更佳。 根據(jù)定日鏡傳動精度實(shí)驗(yàn)系統(tǒng)的功能要求,本文設(shè)計了一套以角位移傳遞為基礎(chǔ)的動態(tài)測量實(shí)驗(yàn)系統(tǒng)。系統(tǒng)主要由伺服系統(tǒng)、傳動系統(tǒng)、檢測系統(tǒng)三部分組成,以電機(jī)內(nèi)置編碼器信號作為標(biāo)準(zhǔn)信號,以數(shù)顯自準(zhǔn)直儀測量信號作為輸出信號,兩者差值的變化反映傳動系統(tǒng)精度的變化情況。通過理論計算與實(shí)驗(yàn)數(shù)據(jù)結(jié)果的對比分析,可以尋找精度變化規(guī)律,以及為誤差溯源提供可靠的依據(jù)。 論文針對變厚齒輪副和雙蝸桿副對定日鏡傳動系統(tǒng)傳動精度的影響,利用統(tǒng)計計算的方法進(jìn)行了傳動鏈傳動精度的理論計算,并開展了系統(tǒng)動、靜態(tài)傳動精度的實(shí)驗(yàn)研究。 論文主要做了以下工作: ①研究了定日鏡傳動精度實(shí)驗(yàn)系統(tǒng)的總體設(shè)計以及工作原理,介紹了伺服系統(tǒng)的工作原理以及控制模式的選擇和實(shí)驗(yàn)參數(shù)的設(shè)置,分析了減速齒輪箱及系統(tǒng)加載裝置的設(shè)計,對測試系統(tǒng)的選型進(jìn)行了說明。 ②基于統(tǒng)計計算的方法,對傳動系統(tǒng)中的變厚齒輪副和蝸輪蝸桿副傳動誤差與回差進(jìn)行了理論計算,確定了傳動誤差與回差的規(guī)律特征,從理論上分析了影響傳動精度的主要因素。 ③為了驗(yàn)證理論計算得到的結(jié)論,,開展了定日鏡傳動系統(tǒng)的傳動精度實(shí)驗(yàn)研究。介紹了傳動精度的測試方法;分析了所獲得的實(shí)驗(yàn)測試數(shù)據(jù);最后對理論計算結(jié)果與實(shí)驗(yàn)結(jié)果進(jìn)行了對比分析,從而為定日鏡傳動系統(tǒng)的傳動精度研究提供了參考依據(jù)。
[Abstract]:The helioscope transmission is a new type of transmission mechanism composed of planetary gear transmission, new moving base circular thickened gear transmission pair and double toroidal worm gear pair, in which the double torus worm gear pair and the new type variable tooth thick gear transmission pair have the ability to achieve small volume. The characteristics of high precision, large stiffness, small side gap (adjustable side gap) and large load carrying capacity. The toroidal worm gearing has the advantages of large speed ratio, high efficiency, long life, compact structure, steady motion, low noise, and convergent effect on upstream error. The mean indexing error is small, which is often used in precise circular indexing mechanism, and the contact state of tooth surface is better with the extension of the working time of the toroidal worm gearing. According to the functional requirements of the precision experiment system of helioscope transmission, a dynamic measuring system based on angular displacement transfer is designed in this paper. The system consists of three parts: servo system, transmission system and testing system. Taking the signal of motor built-in encoder as standard signal and measuring signal of digital display autocollimator as output signal, the variation of the difference between them reflects the change of transmission system precision. We can find the law of accuracy change and provide reliable basis for error tracing. Aiming at the influence of thickening gear pair and double worm gear pair on the transmission accuracy of the helioscope transmission system, the theoretical calculation of the transmission chain transmission accuracy is carried out by using the statistical calculation method, and the experimental study of the system dynamic and static transmission accuracy is carried out. The main work of this paper is as follows:. The main contents are as follows: 1. The general design and working principle of the precision experiment system of helioscope transmission are studied. The working principle of the servo system, the selection of control mode and the setting of experimental parameters are introduced. The design of the decelerating gear box and the loading device of the system is analyzed. The selection of test system is explained. 2 based on the statistical calculation method, the transmission error and return difference of the variable thickness gear pair and the worm gear pair in the transmission system are calculated theoretically, and the regular characteristics of the transmission error and the return error are determined. The main factors affecting transmission accuracy are analyzed theoretically. (3) in order to verify the conclusion of theoretical calculation, the transmission accuracy of helioscope transmission system is studied experimentally, the testing method of transmission accuracy is introduced, the experimental test data obtained are analyzed. Finally, the theoretical calculation results and the experimental results are compared and analyzed, which provides a reference for the study of the transmission accuracy of the helioscope transmission system.
【學(xué)位授予單位】:重慶大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2012
【分類號】:TH132.41
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