本文選題：電動(dòng)助力　切入點(diǎn)：雙錐面二次包絡(luò)環(huán)面蝸桿　出處：《上海師范大學(xué)》2013年碩士論文　論文類型：學(xué)位論文

【摘要】：采用環(huán)面蝸桿副的電動(dòng)助力增益機(jī)構(gòu)由于啟動(dòng)頻繁、沖擊較大、潤滑及冷卻條件有限等原因，使得在實(shí)際使用中經(jīng)常因蝸輪蝸桿副失效，引起轉(zhuǎn)向系統(tǒng)失靈、失效等安全隱患。 本文以某型號電動(dòng)助力增益器上的雙錐面二次包絡(luò)環(huán)面蝸桿副作為研究對象，建立參數(shù)化數(shù)學(xué)和實(shí)體模型，進(jìn)行裝配和仿真，，并研究蝸桿副的接觸應(yīng)力特性，主要研究內(nèi)容如下： （1）根據(jù)空間幾何原理和齒輪嚙合原理，推導(dǎo)、建立蝸桿副的數(shù)學(xué)模型。根據(jù)傳動(dòng)類型特點(diǎn)進(jìn)行整理和分析，以之作為研究雙錐面二次包絡(luò)環(huán)面蝸桿傳動(dòng)模型的理論基礎(chǔ)。 （2）研究了嚙合質(zhì)量評價(jià)方法。通過蝸桿副的基本幾何和工藝參數(shù)計(jì)算，總結(jié)各變量之間相互影響關(guān)系；給出了基于最小油膜厚度和接觸線分布以有效評價(jià)環(huán)面蝸桿副嚙合質(zhì)量的約束方程。 （3）研究了雙錐面二次包絡(luò)環(huán)面蝸桿的實(shí)體參數(shù)化建模和運(yùn)動(dòng)仿真。根據(jù)蝸桿副實(shí)體特點(diǎn)，提出了一種基于虛擬建模的雙錐面環(huán)面蝸桿副的建模方法，并基于SolidWorks-API成功實(shí)現(xiàn)了高精度參數(shù)化高精度建模。 （4）研究了雙錐面二次包絡(luò)環(huán)面蝸桿副的接觸應(yīng)力分布特點(diǎn)。借助有限元分析工具，分析了蝸桿副接觸應(yīng)力的分布隨產(chǎn)形傾角及產(chǎn)形半徑變化特點(diǎn)。將計(jì)算結(jié)果與理論分析相印證，為蝸桿副的加工制造、修形等提供了有效的方法和有力的支持。
[Abstract]:Because of frequent start-up, large impact, limited lubrication and cooling conditions, the electric booster gain mechanism with toroidal worm gear pair is often caused by the failure of worm gear pair in practical use, which leads to the failure of steering system, failure of safety hazard and so on. In this paper, the double conical double enveloping torus worm pair on a certain type of electric power booster is taken as the research object, the parameterized mathematical and solid models are established, the assembly and simulation are carried out, and the contact stress characteristics of the worm pair are studied. The main contents of the study are as follows:. 1) according to the principle of space geometry and gear meshing, the mathematical model of worm pair is established, which is arranged and analyzed according to the characteristics of transmission type, which is used as the theoretical basis for studying the transmission model of double conical double enveloping worm gear. (2) the evaluation method of meshing quality is studied. Through the calculation of the basic geometry and technological parameters of worm gear, the relationship between the variables is summarized. Based on the minimum oil film thickness and contact line distribution, a constraint equation for evaluating meshing quality of toroidal worm pair is presented. In this paper, the parametric modeling and motion simulation of double conical double enveloping torus worm are studied. According to the characteristics of worm pair, a modeling method based on virtual modeling for double conical toroidal worm pair is proposed. The high precision parameterized high precision modeling is successfully realized based on SolidWorks-API. In this paper, the contact stress distribution characteristics of double conical double enveloping torus worm pair are studied, and the finite element analysis tool is used to analyze the contact stress distribution. The characteristics of the distribution of contact stress of worm pair with the inclination angle and radius of production are analyzed. The calculated results are verified by theoretical analysis, which provides an effective method and powerful support for the manufacture and modification of worm pair.
【學(xué)位授予單位】：上海師范大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TH132.44

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