發(fā)布時間：2018-04-03 11:30

  本文選題：螺旋錐齒輪　切入點：球面漸開線　出處：《新疆大學(xué)》2017年碩士論文

【摘要】：螺旋錐齒輪作為一種用于相交軸或交錯軸傳動的動力傳輸部件。因其傳動比大、傳動平穩(wěn)、承載能力強(qiáng)等優(yōu)點,被廣泛用于航空、航天、航海、汽車、機(jī)床、工程機(jī)械和礦山機(jī)械等重要機(jī)械傳動領(lǐng)域。獲得高性能如低振動、低噪音是其重要的發(fā)展方向。首先,螺旋錐齒輪結(jié)構(gòu)形式極其復(fù)雜,其三維模型的設(shè)計難度較大;其次,螺旋錐齒輪在實際加工過程中不可避免的會發(fā)生切削力的改變、齒輪熱變形、等其它的一些不確定性因素,往往導(dǎo)致加工出來的齒面幾何形狀會偏離精確的標(biāo)準(zhǔn)齒面或理論設(shè)計的齒面;最后,螺旋錐齒輪嚙合性能的優(yōu)劣將直接影響其整機(jī)的工作性能。因此,精確的三維模型設(shè)計、優(yōu)質(zhì)高效的齒面加工誤差修正、準(zhǔn)確的嚙合性能分析一直是近些年來各專家學(xué)者在對螺旋錐齒輪研究中的熱點和重難點。本文依托近些年來在螺旋錐齒輪領(lǐng)域研究中取得的成果和所存在的不足,在螺旋錐齒輪三維模型設(shè)計、齒面加工誤差修正、嚙合性能等方面進(jìn)行了相關(guān)基礎(chǔ)性的研究,主要內(nèi)容可以歸納為以下幾個方面:I)完成螺旋錐齒輪精確三維實體模型的構(gòu)建。首先,指出了以共軛曲面原理為理論基礎(chǔ)設(shè)計加工出的螺旋錐齒輪所存在的不足,其設(shè)計加工出的齒廓曲線為近似的球面漸開線。然后,對球面漸開線相關(guān)理論進(jìn)行分析并總結(jié)出齒輪模型設(shè)計方案。最后,完成對齒面數(shù)學(xué)模型詳細(xì)的求解,并以三維模型設(shè)計軟件為工具構(gòu)建出螺旋齒輪精確三維實體模型。II)提出基于ease-off的通用加工參數(shù)的螺旋錐齒輪反調(diào)修正方法。首先,基于通用展成加工模型,通過利用數(shù)學(xué)上的高階多項式函數(shù)來正確表達(dá)出機(jī)床的通用加工參數(shù),并利用通用加工參數(shù)來完成對理論齒面的定義;然后,通過三坐標(biāo)測量獲取真實齒面的ease-off值,并建立目標(biāo)函數(shù);最后,通過引入敏感性矩陣和改進(jìn)的以置信域策略為基礎(chǔ)的Levenberg-Marquardat(L-M)算法來實現(xiàn)對機(jī)床通用加工參數(shù)反調(diào)量精確穩(wěn)定的求解,完成了齒面加工誤差的反調(diào)修正,實現(xiàn)了齒面高精度、高效率的設(shè)計制造。III)基于高質(zhì)量的有限元網(wǎng)格模型和合理的有限元分析前處理相關(guān)設(shè)置,采用有限元法研究分析螺旋錐齒輪的靜、動態(tài)嚙合性能。首先,研究計算了齒面接觸應(yīng)力、齒根彎曲應(yīng)力、齒面接觸區(qū)的形狀及其運(yùn)動軌跡;然后,總結(jié)分析了齒輪傳遞誤差的計算方法并探索了不同載荷工況對傳遞誤差的影響;最后,分別以小輪轉(zhuǎn)速、小輪加速時間、載荷為因素,通過建立對比數(shù)據(jù)曲線圖形,探究其對螺旋錐齒輪動態(tài)嚙合性能的影響。其研究規(guī)律和結(jié)論為螺旋錐齒輪的模型設(shè)計、加工制造、以及實現(xiàn)齒輪傳動的減振降噪提供了重要的參考價值。
[Abstract]:Spiral bevel gear is used as a power transmission part of intersecting axes or staggered shaft transmission. Because of its large transmission ratio, smooth transmission, strong bearing capacity, is widely used in aviation, aerospace, marine, automotive, machine tools, construction machinery and mining machinery and other important field of mechanical transmission. To obtain high performance such as low vibration. Low noise is an important direction of development. First of all, the structure form of spiral bevel gear is extremely complex, the 3D model design is difficult; secondly, the spiral bevel gear is inevitable in actual machining process will change gear cutting force, thermal deformation, and other uncertain factors, often lead to tooth surface geometry processing it will deviate from the standard of accuracy or theoretical design of tooth surface; finally, the performance of spiral bevel gear meshing performance will directly affect the whole machine. Therefore, accurate 3D model design Gauge, error correction of tooth surface machining quality and efficient, accurate analysis of the meshing performance in recent years has been the focus of experts and scholars in the study of spiral bevel gear and the heavy difficulty. Research in the field of spiral bevel gear based on the achievements in recent years and the existing problems, the 3D model design of spiral bevel gear and the modified tooth surface machining error, the fundamental research on the meshing performance and other aspects, the main contents can be summarized as follows: I) to complete the construction of spiral bevel gear with accurate 3D model. Firstly, pointed out the shortcomings of the conjugate principle for the theoretical basis for the design of spiral bevel gear machined. The design process of spherical involute tooth profile curve is approximate. Then, on the relevant theoretical analysis of spherical involute gear model and summed up the design scheme. Finally, the completion of the tooth number To solve the model in detail, and the three-dimensional model design software as a tool to construct helical gear 3D solid model.II) proposed correction method of spiral bevel gear antiregulation universal machining parameters based on ease-off. Firstly, the general machining model based on the correct expression of general processing parameters of the machine by using the high order polynomial function of mathematics the general and the use of processing parameters to complete the definition of the theoretical tooth surface; then, to obtain the ease-off value of real tooth surface by three coordinate measurement, and the objective function is established; finally, by introducing the sensitivity matrix and improved the confidence domain strategy based Levenberg-Marquardat (L-M) algorithm to solve general machine processing parameters the amount of compensation precision and stability, the tooth surface machining error correction antiregulation, realizes the tooth surface of high precision, high efficiency and high quality of design and manufacture based on.III) Finite element mesh model and finite element analysis of reasonable pretreatment related settings, the analysis of spiral bevel gear static finite element method, the dynamic meshing performance. Firstly, calculation of the tooth surface contact stress, bending stress, shape and trajectory of the tooth contact area; then, analyzes the calculation method of transmission error of gear and explore different load effect on the transfer error summary; finally, to ferry ferry speed, acceleration time, load factors, through the establishment of comparative data curve graphics, explore its influence on the dynamic meshing performance. The research conclusion and rules for the model design, the spiral bevel gear the processing and manufacturing, as well as the realization of gear vibration and noise reduction provides important reference value.

【學(xué)位授予單位】：新疆大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TH132.41

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