本文選題：諧波齒輪傳動(dòng) + 承載特性��； 參考：《南京理工大學(xué)》2011年碩士論文

【摘要】：飛行器伺服傳動(dòng)系統(tǒng)使用的諧波齒輪傳動(dòng)具有工作時(shí)間短,過(guò)載大等工作特點(diǎn),并且要求結(jié)構(gòu)小型化和輕量化,現(xiàn)有商品化的諧波齒輪傳動(dòng)產(chǎn)品一般無(wú)法滿足系統(tǒng)的整體技術(shù)指標(biāo)要求。論文針對(duì)這類諧波齒輪傳動(dòng)的承載特性與失效形式進(jìn)行了研究,旨在找出提高其承載能力的措施和設(shè)計(jì)方法。 論文首先根據(jù)短時(shí)高過(guò)載工況的特殊性,分析了諧波齒輪傳動(dòng)的薄弱環(huán)節(jié)和主要失效方式。然后在諧波齒輪傳動(dòng)經(jīng)典理論的基礎(chǔ)上,分析了柔輪這一薄弱環(huán)節(jié)的變形特征和承受載荷時(shí)的應(yīng)力分布狀況,從中發(fā)現(xiàn)了影響承載的危險(xiǎn)截面,進(jìn)而提出了危險(xiǎn)截面的強(qiáng)度計(jì)算方法。同時(shí)論文以短杯72型諧波為例,利用ABAQUS有限元分析工具對(duì)諧波齒輪傳動(dòng)裝配體進(jìn)行了仿真,對(duì)柔輪的變形和應(yīng)力進(jìn)行了分析,重點(diǎn)比較了空載時(shí)和承受1倍-5倍額定載荷時(shí)的柔輪應(yīng)力分布狀況,找出了不同載荷下柔輪的應(yīng)力分布規(guī)律。論文中還通過(guò)改變?nèi)彷喌慕Y(jié)構(gòu)參數(shù)如長(zhǎng)徑比、壁厚等,充分分析了結(jié)構(gòu)參數(shù)對(duì)諧波齒輪傳動(dòng)承載能力的影響,從中找出了既滿足小型化、輕量化要求,又滿足承載指標(biāo)的最佳結(jié)構(gòu)參數(shù)。為了進(jìn)一步改善柔輪應(yīng)力狀況,提高諧波齒輪傳動(dòng)的承載能力,論文重點(diǎn)對(duì)一種新型STS齒形諧波齒輪傳動(dòng)的齒廓曲線進(jìn)行了理論推導(dǎo),尋求改善柔輪應(yīng)力狀況的最佳嚙合曲線。論文的研究為提高諧波齒輪傳動(dòng)的承載能力和該類諧波齒輪傳動(dòng)的設(shè)計(jì)提供了理論依據(jù)。
[Abstract]:The harmonic gear drive used in the servo transmission system of aircraft has the characteristics of short working time, large overload and so on, and requires the structure to be miniaturized and lightweight. The existing commercial harmonic gear transmission products generally can not meet the overall technical requirements of the system. In this paper, the bearing characteristics and failure form of this kind of harmonic gear transmission are studied in order to find out the measures and design methods to improve its bearing capacity. Firstly, according to the particularity of short time high overload condition, the weak link and main failure mode of harmonic gear drive are analyzed. Then on the basis of the classical theory of harmonic gear transmission, the deformation characteristics of the weak link of flexible wheel and the stress distribution under load are analyzed, and the dangerous section which affects the bearing capacity is found. Furthermore, a method for calculating the strength of the dangerous section is proposed. At the same time, the paper takes the short cup 72 type harmonic as an example, uses Abaqus finite element analysis tool to carry on the simulation to the harmonic gear drive assembly body, has carried on the analysis to the flexible wheel deformation and the stress. The stress distribution of flexible wheel under no-load and under one to five times rated load is compared, and the stress distribution law of flexible wheel under different loads is found out. By changing the structural parameters of flexible wheel, such as aspect ratio, wall thickness and so on, the influence of structural parameters on the bearing capacity of harmonic gear transmission is fully analyzed, and the miniaturization and lightweight requirements are found out. The optimum structural parameters of bearing index are also satisfied. In order to further improve the stress condition of flexible wheel and improve the bearing capacity of harmonic gear transmission, the paper mainly deduces the tooth profile curve of a new type of STS tooth shape harmonic gear transmission, and seeks for the best meshing curve to improve the stress condition of flexible wheel. The research in this paper provides a theoretical basis for improving the bearing capacity of harmonic gear transmission and the design of this kind of harmonic gear transmission.
【學(xué)位授予單位】：南京理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2011
【分類號(hào)】：TH132.41

【引證文獻(xiàn)】

相關(guān)碩士學(xué)位論文 前1條

1 羅明;雙圓弧齒廓短杯諧波齒輪的結(jié)構(gòu)設(shè)計(jì)與有限元分析[D];南京理工大學(xué);2012年

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本文編號(hào)：2048925