本文選題：齒輪傳動系統(tǒng) + 有限元法��； 參考：《沈陽工業(yè)大學》2012年碩士論文

【摘要】：齒輪是各類機械設備中應用最廣泛的傳動零件,其工作性能對整個設備都有著至關(guān)重要的影響。隨著現(xiàn)代工業(yè)技術(shù)的快速發(fā)展,齒輪傳動系統(tǒng)傳遞的功率不斷增大,齒輪的轉(zhuǎn)速不斷加快,使得對齒輪傳動系統(tǒng)的設計、制造及裝配都提出了更高的要求。 本課題以遼寧省復雜曲面數(shù)控制造技術(shù)重點實驗室設計、生產(chǎn)的數(shù)控螺桿銑床銑頭內(nèi)的齒輪傳動系統(tǒng)為研究對象,對漸開線直齒圓柱齒輪進行接觸分析,得到了齒輪傳動系統(tǒng)的綜合時變嚙合剛度曲線;通過實驗確定齒輪系統(tǒng)中三個齒輪的齒廓誤差,再用數(shù)值仿真的方法得到齒輪傳動系統(tǒng)的誤差激勵曲線。之后將齒輪嚙合的剛度激勵同誤差激勵合成,得到整個齒輪傳動系統(tǒng)的內(nèi)部激勵;然后對齒輪傳動系統(tǒng)模型進行了模態(tài)分析和動態(tài)響應分析,得到傳動系統(tǒng)的固有頻率范圍及系統(tǒng)兩個位置的振動響應曲線。最后通過對銑頭的振動測試實驗,驗證了采用有限元法對齒輪傳動系統(tǒng)進行分析的有效性和準確性。 本文具體的研究工作主要為,首先建立齒輪嚙合的三維有限元模型,對其進行靜態(tài)接觸有限元分析,通過計算輪齒的嚙合力及變形,得到齒輪綜合時變嚙合剛度曲線;然后建立了整個傳動系統(tǒng)的有限元模型,對模型進行模態(tài)分析,通過提出的一種更加準確計算齒輪裝配體模態(tài)的方法,得到了齒輪傳動系統(tǒng)的固有頻率范圍及振型;對齒輪傳動系統(tǒng)進行動態(tài)響應分析,得到了齒輪傳動系統(tǒng)的振動速度、振動加速度和振動位移。最后對數(shù)控螺桿銑床銑頭進行振動檢測試驗,通過分析頻譜中主要的成分確定了齒輪傳動系統(tǒng)中主要的振動及噪聲來自于齒輪嚙合,與動態(tài)響應分析結(jié)果進行比較,結(jié)果基本一致。
[Abstract]:Gear is the most widely used transmission part in all kinds of mechanical equipment, and its working performance has a vital influence on the whole equipment.With the rapid development of modern industrial technology, the transmission power of the gear transmission system is increasing, and the speed of the gear is accelerating, which makes the design, manufacture and assembly of the gear transmission system more demanding.This subject takes the gear transmission system in the milling head of the NC screw milling machine designed and produced by Liaoning Provincial key Laboratory of NC Manufacturing Technology of complex curved Surface as the research object, and carries on the contact analysis to the involute spur gear.The comprehensive time-varying meshing stiffness curve of the gear transmission system is obtained, and the tooth profile error of the three gears in the gear system is determined by experiments, and the error excitation curve of the gear transmission system is obtained by numerical simulation.Then the stiffness excitation of gear meshing is combined with the error excitation, and the internal excitation of the whole gear transmission system is obtained, and then the modal analysis and dynamic response analysis of the gear transmission system model are carried out.The natural frequency range of the transmission system and the vibration response curve of the two positions of the system are obtained.Finally, the validity and accuracy of the finite element method for the analysis of gear transmission system are verified by testing the vibration of the milling head.In this paper, the main research work is as follows: firstly, the three-dimensional finite element model of gear meshing is established, and the static contact finite element analysis is carried out. By calculating the meshing force and deformation of gear teeth, the comprehensive time-varying meshing stiffness curve is obtained.Then the finite element model of the whole transmission system is established and the modal analysis of the model is carried out. The natural frequency range and mode shape of the gear transmission system are obtained by a more accurate method to calculate the modal of the gear assembly body.The dynamic response of gear transmission system is analyzed, and the vibration velocity, vibration acceleration and vibration displacement of gear transmission system are obtained.Finally, the vibration test of the milling head of NC screw milling machine is carried out. By analyzing the main components of the frequency spectrum, the main vibration and noise in the gear transmission system are determined from the gear meshing, and the results are compared with the dynamic response analysis results.The results are basically the same.
【學位授予單位】：沈陽工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2012
【分類號】：TH132.41

【引證文獻】

相關(guān)期刊論文 前1條

1 武小歡;黃海鑫;趙正飛;吳燕瑞;;考慮齒輪軸承座加工誤差的齒輪靜力學分析[J];裝備制造技術(shù);2013年07期

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本文編號：1748923