本文關(guān)鍵詞：球面漸開(kāi)線齒形弧齒錐齒輪NURBS設(shè)計(jì)與動(dòng)力學(xué)分析　出處：《新疆大學(xué)》2015年碩士論文　論文類(lèi)型：學(xué)位論文

  更多相關(guān)文章： 弧齒錐齒輪 球面漸開(kāi)線 建模 NURBS 動(dòng)力學(xué)

【摘要】：弧齒錐齒輪齒面的精確數(shù)字化模型是其數(shù)字化制造中關(guān)鍵技術(shù)(如齒面接觸分析、齒面誤差修正以及測(cè)試等)的基礎(chǔ)。目前,弧齒錐齒輪實(shí)體建模大都以嚙合原理為基本理論出發(fā)點(diǎn),得到的近似球面漸開(kāi)線齒形弧齒錐齒輪存在原理性誤差。因此本文提出了球面漸開(kāi)線齒形弧齒錐齒輪設(shè)計(jì)方案,并利用動(dòng)力學(xué)分析對(duì)模型的動(dòng)態(tài)嚙合特性和振動(dòng)特性進(jìn)行了相關(guān)研究,為弧齒錐齒輪的數(shù)字化建模提供了新的思路和途徑�；↓X錐齒輪的理論齒形曲線為球面漸開(kāi)線,本文從弧齒錐齒輪齒面精確組成和形狀特征出發(fā),將球面漸開(kāi)線形成原理應(yīng)用于齒面基本曲線的求導(dǎo)中,完成了齒面曲線的分段參數(shù)化。采用NURBS曲面擬合方法對(duì)齒面進(jìn)行重構(gòu)以提高齒面精度。通過(guò)三維軟件的運(yùn)動(dòng)仿真,表明了建模方案所得齒輪模型具有良好的傳動(dòng)可行性和正確性�；诰_的參數(shù)化實(shí)體模型,通過(guò)動(dòng)力學(xué)分析方法對(duì)模型的動(dòng)態(tài)嚙合特性進(jìn)行了深入的研究。以主被動(dòng)輪轉(zhuǎn)速和加速度變化規(guī)律為切入點(diǎn),從嚙合速度和負(fù)載兩個(gè)典型的工作條件因素出發(fā),研究了弧齒錐齒輪的嚙合沖擊特性,得到了主被動(dòng)輪轉(zhuǎn)速和轉(zhuǎn)動(dòng)加速度的變化規(guī)律,以及齒面接觸應(yīng)力云圖。完成了球面漸開(kāi)線齒形弧齒錐齒輪動(dòng)態(tài)特性的研究。通過(guò)對(duì)弧齒錐齒輪輪齒的受力分析,總結(jié)了弧齒錐齒輪系統(tǒng)的振動(dòng)形式,利用質(zhì)量集中法建立齒輪系統(tǒng)耦合振動(dòng)數(shù)學(xué)分析模型,對(duì)模型的運(yùn)動(dòng)微分方程求解后得到了主被動(dòng)齒輪的沿各方向的振動(dòng)位移響應(yīng),完成了對(duì)齒輪振動(dòng)特性的研究。利用模態(tài)分析對(duì)主被動(dòng)齒輪模型的模態(tài)進(jìn)行了研究,得到了主被動(dòng)輪的靜止?fàn)顟B(tài)下的各階固有頻率和振型圖,為避免共振提供了依據(jù)。同時(shí)也說(shuō)明了齒輪模型具有良好的振動(dòng)特性。
[Abstract]:The tooth surface of spiral bevel gear precision digital model is the key technology in digital manufacturing (such as tooth contact analysis, tooth surface error correction and testing) foundation. At present, the spiral bevel gear modeling mostly the meshing principle of basic theory, the approximate spherical involute spiral bevel gears have the principle of error. So this paper put forward the spherical involute spiral bevel gear design, and the use of the relevant research dynamic meshing characteristics and vibration characteristics of the model, and provides a new approach for digital modeling of spiral bevel gear. The theoretical tooth curve of spiral bevel gear is spherical in this paper, involute, spiral bevel gear tooth surface precision components and shape features, the formation of spherical involute tooth surface principle applied to basic curve derivation, piecewise curve tooth surface finish Parameter. Using NURBS surface fitting method on tooth surface reconstruction to improve the tooth surface precision. Through the motion simulation of 3D software, show that the model of gear drive with the modeling scheme feasibility and correctness. Parametric modeling based on accurate, through dynamic analysis method to model the dynamic meshing characteristics in-depth in order to study. The main passive wheel speed and acceleration variation as the starting point, from the point of meshing speed and load of two typical working conditions of meshing impact factors, characteristics of the spiral bevel gear has been active and passive wheel speed and rotating acceleration variation, contact stress nephogram and tooth surface. The research of spherical involute the tooth bevel gear dynamic characteristics is done. By force of spiral bevel gear vibration analysis, summed up the form of a spiral bevel gear system, the use of quality Centralized method to establish the coupled vibration analysis of the gear system mathematical model for solving the differential equation of motion model has been obtained after each direction vibration displacement of main driven gear response of gear vibration was carried out. Using modal analysis modal of active and passive gear model are studied, and obtain the order natural frequency and vibration figure still under active and passive wheel, to avoid resonance. Provide the basis also show that the gear model has good vibration characteristic.

【學(xué)位授予單位】：新疆大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：TH132.41

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本文編號(hào)：1369965