【摘要】：針對(duì)傳統(tǒng)諧波傳動(dòng)輪齒嚙合質(zhì)量較差和整體剛度不高等缺點(diǎn),為進(jìn)一步提高諧波齒輪傳動(dòng)的承載能力,設(shè)計(jì)出新型諧波傳動(dòng)機(jī)構(gòu),論文重點(diǎn)從諧波齒輪的齒形、柔輪結(jié)構(gòu)、強(qiáng)度及剛度等幾方面進(jìn)行對(duì)諧波齒輪傳動(dòng)的研究。 論文首先從提高齒輪承載能力的角度出發(fā),參照切線式雙圓弧齒輪設(shè)計(jì)柔輪齒形,及與其共軛的剛輪齒形。其次對(duì)柔輪的強(qiáng)度和剛度計(jì)算公式作了理論上的推導(dǎo),并以此作為柔輪結(jié)構(gòu)設(shè)計(jì)的依據(jù)。利用優(yōu)化算法,實(shí)現(xiàn)以減小柔輪體積并提高柔輪承載能力和剛度為目的的柔輪結(jié)構(gòu)參數(shù)優(yōu)化。 文中應(yīng)用ABAQUS進(jìn)行諧波齒輪結(jié)構(gòu)的力學(xué)特性分析,對(duì)設(shè)計(jì)齒形與傳統(tǒng)的漸開線齒形作比較,驗(yàn)證了具有圓弧齒形的輪齒承載能力比漸開線齒形要好。通過仿真計(jì)算驗(yàn)證所推導(dǎo)的柔輪剛度計(jì)算公式的正確性,并分析了柔輪剛度隨載荷變化的情況。加工柔輪的刀具通常為滾刀刀具,用近似齒形刀具加工柔輪得到的輪齒曲面誤差較大,為此論文以空間共軛理論為依據(jù)推導(dǎo)出與柔輪齒形共軛的刀具齒面方程。論文的研究為提高諧波齒輪傳動(dòng)的承載能力提供了理論依據(jù)。
[Abstract]:In order to improve the bearing capacity of harmonic gear transmission, a new type of harmonic transmission mechanism is designed in order to improve the bearing capacity of harmonic gear transmission. The paper focuses on the tooth shape of harmonic gear and the structure of flexible wheel, aiming at the shortcomings of the traditional harmonic drive gear teeth meshing quality and overall stiffness. The harmonic gear transmission is studied in terms of strength and stiffness. Firstly, from the point of view of improving the bearing capacity of gear, the tooth profile of flexible wheel and its conjugate rigid gear are designed with reference to tangent double circular arc gear. Secondly, the formula of flexure wheel strength and stiffness is deduced theoretically, and it is used as the basis of flexure wheel structure design. The optimization algorithm is used to optimize the structural parameters of flexible wheel in order to reduce the volume of flexible wheel and improve the bearing capacity and stiffness of flexible wheel. In this paper, ABAQUS is used to analyze the mechanical characteristics of harmonic gear structure. The comparison between the designed tooth shape and the traditional involute tooth shape is made. It is verified that the bearing capacity of the gear tooth with circular arc tooth shape is better than that with involute tooth shape. The correctness of the stiffness calculation formula is verified by simulation, and the variation of flexwheel stiffness with load is analyzed. The cutting tool for machining flexure wheel is usually hob tool, and the surface error of gear tooth obtained by using approximate tooth shape tool is large. Therefore, based on the theory of spatial conjugation, the equation of tooth surface of the tool is deduced based on the theory of space conjugation. The research in this paper provides a theoretical basis for improving the bearing capacity 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】：2012
【分類號(hào)】：TH132.41

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