本文關鍵詞：雙圓弧齒廓短杯諧波齒輪的結構設計與有限元分析　出處：《南京理工大學》2012年碩士論文　論文類型：學位論文

  更多相關文章： 諧波齒輪傳動 嚙合 雙圓弧齒廓 有限元分析

【摘要】：諧波齒輪傳動機構作為一個新型的傳動機構,自上世紀問世以來,就以其獨特的性能而得到廣泛的應用。但隨著科技的發(fā)展,現(xiàn)有的諧波齒輪傳動裝置的性能也急需提高。 本文從諧波齒輪的整體設計開始,先確定柔輪的結構形式及相關幾何尺寸,然后確定波發(fā)生器及剛輪的結構形式及幾何尺寸。并對柔輪筒體的應力及應變情況進行分析計算,對輪齒的受力也進行分析。在此基礎上,為了提高諧波齒輪的傳動性能,分析雙圓弧嚙廓在適用于諧波齒輪傳動的嚙合中,將雙圓弧齒廓引入到諧波傳動中來。通過參考現(xiàn)有的標準的雙圓弧齒廓來確定柔輪輪齒的齒廓,然后通過幾何數(shù)學的方法及坐標變換,推導出與之相嚙合的剛輪輪齒的齒廓。在確定諧波傳動裝置的結構尺寸及嚙合參數(shù)后,對整體進行三維建模,并運用有限元軟件進行分析。在有限元軟件中,對諧波齒輪傳動裝置的波發(fā)生器、柔輪和剛輪進行網絡劃分、材料屬性的定義和邊界條件的給定,并定義分析步進行分析。對波發(fā)生器的裝配進行仿真,得出在波發(fā)生器裝入后,柔輪簡體的應力及應變情況。然后裝入剛輪,此時,諧波齒輪傳動裝置裝配完畢,此時波發(fā)生器、柔輪和剛輪的受力情況就是諧波齒輪傳動裝置的初始工作情況,觀察柔輪簡體及輪齒的受力情況。在裝配好之后,對整體模型施加負載,觀察在空載及不同負載的情況下,柔輪的應力及應變情況。然后改變柔輪結構的參數(shù),進行分析,結果進行對比,得出此次柔輪結構幾何尺寸的最優(yōu)解。 通過理論分析、計算和有限元的仿真,我們得出在諧波齒輪傳動中,雙圓弧齒形齒廓確實要優(yōu)越于普通漸開線齒形齒廓。確定了此次設計的長徑比為0.54轉速比為50的諧波齒輪傳動裝置的結構形式及幾何尺寸。而且通過對其的理論及有限元分析,為雙圓弧齒廓在諧波齒輪傳動中的應用提供了一定的基礎。
[Abstract]:Harmonic gear transmission mechanism, as a new type of transmission mechanism, has been widely used because of its unique performance since 0th century, but with the development of science and technology. The performance of the existing harmonic gear drive is also in urgent need of improvement. This paper begins with the overall design of harmonic gear, and first determines the structural form and related geometric dimensions of the flexible wheel. Then the structure form and geometric size of the wave generator and the rigid wheel are determined. The stress and strain of the flexible wheel cylinder are analyzed and the force of the gear teeth is also analyzed. In order to improve the transmission performance of harmonic gear, it is analyzed that the double arc mesh is suitable for the meshing of harmonic gear transmission. The double circular arc tooth profile is introduced into the harmonic drive. The tooth profile of the flexgear tooth is determined by referring to the existing standard double circular arc tooth profile, and then the geometric mathematics method and coordinate transformation are adopted. After determining the structure size and meshing parameters of the harmonic transmission, the three-dimensional modeling of the whole is carried out, and the finite element software is used to analyze it. The wave generator, flexible wheel and rigid wheel of harmonic gear drive are divided into network, the definition of material attribute and the boundary condition are given, and the analysis step is defined and analyzed. The assembly of wave generator is simulated. After the wave generator is installed, the stress and strain of the flexible wheel are obtained. Then the rigid wheel is mounted. At this time, the harmonic gear transmission device is assembled, and the wave generator is installed at this time. The force condition of flexible wheel and rigid wheel is the initial working condition of harmonic gear transmission, observe the force of simple body and gear tooth of flexible wheel. After assembly, apply load to the whole model. Under the condition of no load and different loads, the stress and strain of flexible wheel are observed, then the parameters of flexure wheel structure are changed, and the results are compared, and the optimum solution of the geometric dimension of flexwheel structure is obtained. Through theoretical analysis, calculation and finite element simulation, we get the harmonic gear transmission. The double circular arc tooth profile is indeed superior to the common involute tooth profile. The structural form and geometric size of the harmonic gear drive with a aspect ratio of 0.54 to 0.54 and a rotational speed ratio of 50 are determined. Its theory and finite element analysis. It provides a basis for the application of double circular arc tooth profile in harmonic gear transmission.
【學位授予單位】：南京理工大學
【學位級別】：碩士
【學位授予年份】：2012
【分類號】：TH132.41

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