本文選題：支撐剛度　切入點(diǎn)：內(nèi)嚙合　出處：《湘潭大學(xué)》2012年碩士論文　論文類型：學(xué)位論文

【摘要】：在機(jī)械產(chǎn)品應(yīng)用的領(lǐng)域和范圍越來越廣泛的同時，人們對產(chǎn)品的性能要求也越來越高。作為最傳統(tǒng)的傳動部件之一的齒輪，近年來正朝著高速重載和低速重載的方向發(fā)展，因此，對于重載齒輪，其傳動的平穩(wěn)性和承載能力成為齒輪設(shè)計者越來越關(guān)注的命題。為了能夠在不改變齒輪幾何尺寸和大幅提高生產(chǎn)成本的前提下保證重載齒輪的傳動性能和使用壽命，對齒輪進(jìn)行適當(dāng)?shù)凝X廓修形和齒向修形是齒輪設(shè)計者常用的設(shè)計方法。本文圍繞重載齒輪中齒廓修形和齒向修形中幾個主要修形參數(shù)的確定做了以下工作： 首先用有限元迭代方法求得齒輪軸軸承的支承剛度，在綜合考慮支承剛度和齒輪軸彈性變形的影響下用石川方法求得齒輪的嚙合剛度，同時推導(dǎo)了內(nèi)齒輪當(dāng)量齒形的幾何尺寸以便于石川方法在內(nèi)嚙合中的使用。在此基礎(chǔ)上，本文以齒輪嚙合過程中嚙入時刻的齒輪副的綜合彈性變形量作為齒廓修形的最大齒廓修形量，并用石川方法求得這一變形量，從而得到了考慮支承剛度和齒輪軸彈性變形作用下的齒廓最大修形量。在齒向修形上，，考慮了齒輪輪齒嚙合時齒厚方向上的接觸變形和由于軸和輪齒的彈性變形以及空間幾何因素影響而產(chǎn)生的齒輪的歪斜雙重因素，從而得到最大鼓形量。得到最大鼓形量的同時以獲得最大的輪齒強(qiáng)度而保證互相嚙合的兩輪齒相切而不相割的原則下求得齒輪修鼓的鼓形中心。 然后根據(jù)前面得到的齒廓最大修形量、鼓形量、鼓形中心的計算方法，運(yùn)用Visual C++平臺開發(fā)齒輪修形計算軟件，并用該計算軟件計算XE-93型號風(fēng)電變槳減速器輸出軸齒輪齒廓最大修形量、鼓形量以及鼓形中心，同時確定其他一些相關(guān)修形參數(shù)從而確定齒輪的修形方案，并與國外提供的修形參數(shù)對比。確定齒輪修形方案后，在三維軟件中建立齒輪模型并導(dǎo)入到有限元分析軟件ABAQUS和動力學(xué)分析軟件ADAMS中進(jìn)行有限元和動力學(xué)分析，得到齒輪修形前后嚙入嚙出時刻齒輪應(yīng)力分布云圖、齒輪副接觸面積隨時間變化規(guī)律、以及輸出軸齒輪配對內(nèi)齒圈轉(zhuǎn)速隨時間的變化規(guī)律，并對這些分析數(shù)據(jù)進(jìn)行比較。最后，搭建試驗(yàn)臺對齒輪進(jìn)行接觸疲勞性試驗(yàn)，驗(yàn)證修形齒輪的可靠性。
[Abstract]:As the fields and scope of mechanical products are more and more extensive, the performance requirements of products are becoming more and more high. As one of the most traditional transmission components, gear is developing in the direction of high speed and heavy load and low speed and heavy load in recent years. So, for heavy-duty gears, In order to ensure the transmission performance and service life of heavy-duty gears without changing the geometric dimensions of the gears and greatly increasing the production cost, the stability and bearing capacity of the gears become a more and more important proposition for the gear designers. Gear profile modification and tooth profile modification are commonly used by gear designers. In this paper, the main modification parameters of tooth profile and tooth modification in heavy-duty gear are determined as follows:. Firstly, the bearing stiffness of gear shaft bearing is obtained by means of finite element iteration method, and the meshing stiffness of gear shaft is obtained by Shi Chuan method under the influence of bearing stiffness and elastic deformation of gear shaft. At the same time, the geometric dimensions of the equivalent tooth profile of the inner gear are deduced to facilitate the use of Shi Chuan's method in the internal meshing. In this paper, the synthetic elastic deformation of the gear pair at the moment of gear meshing is taken as the maximum profile modification of the tooth profile, and the deformation is obtained by Shi Chuan's method. In this way, the maximum modification of tooth profile under the consideration of supporting stiffness and elastic deformation of gear shaft is obtained. Taking into account the contact deformation in the tooth thickness direction during gear gear tooth meshing and the double factors of gear skew caused by the elastic deformation of shaft and gear tooth and the influence of spatial geometric factors, The maximum drum shape is obtained and the drum center of gear repair drum is obtained under the principle of obtaining the maximum gear tooth strength and ensuring the tangent but not cutting of the two gears engaged in each other. Then, according to the calculation method of the tooth profile maximum modification, the drum shape and the drum center, the software of gear profile modification is developed by using Visual C platform. The calculation software is used to calculate the maximum profile modification, the drum shape and the drum center of the output shaft gear of the XE-93 type wind power variable propeller reducer. At the same time, some other relevant modification parameters are determined to determine the modification scheme of the gear. The gear model is established in 3D software and imported into finite element analysis software ABAQUS and dynamic analysis software ADAMS for finite element and dynamic analysis. The stress distribution of the gear before and after the gear modification, the change of the contact area with time, and the variation of the speed of the inner ring of the output shaft gear pair with time are obtained, and the analysis data are compared. The contact fatigue test was carried out on the test rig to verify the reliability of the modified gear.
【學(xué)位授予單位】：湘潭大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：TH132.41;TG61

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相關(guān)期刊論文 前2條

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本文編號：1616476