基于齒輪嚙合動力學(xué)的工業(yè)減速器齒輪齒廓修形理論研究
發(fā)布時(shí)間:2018-11-12 14:00
【摘要】:隨著現(xiàn)代工業(yè)技術(shù)的飛速發(fā)展,齒輪傳動正朝著高效、高速和重載的方向發(fā)展。齒輪傳動系統(tǒng)傳遞的功率不斷增大,齒輪轉(zhuǎn)速不斷加快,不僅使得減速器的振動和噪聲問題更加尖銳突出,同時(shí)也影響了整套機(jī)組的安全性和穩(wěn)定性。齒廓修形技術(shù)是高精度齒輪傳動設(shè)計(jì)、制造的關(guān)鍵技術(shù),是解決齒輪傳動的振動和噪聲問題的一個極其重要的方法。 本文結(jié)合齒輪系統(tǒng)動力學(xué)的基本理論,對其動態(tài)激勵原理、數(shù)學(xué)模型種類以及動態(tài)特性內(nèi)容進(jìn)行了一定的概述,并重點(diǎn)針對嚙合剛度、嚙合誤差和嚙合沖擊等三大內(nèi)部激勵的機(jī)理進(jìn)行了深入的探討;通過ADAMS和ANSYS軟件聯(lián)合動力學(xué)仿真的方式,建立了齒輪系統(tǒng)的柔體動力學(xué)模型,實(shí)現(xiàn)了對齒輪嚙合力動態(tài)特性的研究;根據(jù)齒輪系統(tǒng)齒廓修形的基本原理,采用有限元的方法,建立了齒輪單齒嚙合位置的接觸有限元模型,確定了齒輪齒廓修形的最大修形量;針對四種常用的修形曲線,計(jì)算出不同嚙合位置的修形量,并通過描點(diǎn)法對修形曲線進(jìn)行精確擬合,建立了修形齒輪的實(shí)體幾何模型,進(jìn)行動力學(xué)仿真分析對比,證實(shí)了齒廓修形的合理性,隨后以齒輪動態(tài)嚙合力的振動特性作為性能指標(biāo),,選取了針對本文工況的最優(yōu)修形曲線;最后在此基礎(chǔ)上,總結(jié)出一種利用現(xiàn)代計(jì)算機(jī)仿真技術(shù)合理地確定齒輪修形量和選擇修形曲線的方法,為齒廓修形的研究和實(shí)踐運(yùn)用提供了理論依據(jù)。
[Abstract]:With the rapid development of modern industrial technology, gear transmission is developing in the direction of high efficiency, high speed and heavy load. The transmission power of the gear transmission system is increasing and the speed of the gear is speeding up, which not only makes the vibration and noise problems of the reducer more acute, but also affects the safety and stability of the whole unit. Profile modification is a key technology in the design and manufacture of high precision gear transmission. It is a very important method to solve the problem of vibration and noise of gear transmission. Combined with the basic theory of gear system dynamics, this paper summarizes the dynamic excitation principle, mathematical models and dynamic characteristics of gear system, and focuses on meshing stiffness. The mechanism of three internal excitations, such as meshing error and meshing shock, is discussed deeply. Through the joint dynamic simulation of ADAMS and ANSYS software, the flexible body dynamics model of gear system is established, and the dynamic characteristics of gear meshing force are studied. According to the basic principle of tooth profile modification in gear system, the contact finite element model of gear tooth meshing position is established by using finite element method, and the maximum modification quantity of gear tooth profile modification is determined. According to four kinds of common modification curves, the modification quantity of different meshing position is calculated, and the modification curve is accurately fitted by drawing point method, and the solid geometric model of modified gear is established, and the dynamic simulation analysis and comparison are carried out. The rationality of tooth profile modification is confirmed, and then the vibration characteristic of gear dynamic meshing force is taken as the performance index, and the optimal profile modification curve is selected according to the working conditions in this paper. Finally, a method of determining gear profile modification and selecting profile modification curve by using modern computer simulation technology is summarized, which provides a theoretical basis for the research and practical application of tooth profile modification.
【學(xué)位授予單位】:合肥工業(yè)大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2012
【分類號】:TH132.46
本文編號:2327314
[Abstract]:With the rapid development of modern industrial technology, gear transmission is developing in the direction of high efficiency, high speed and heavy load. The transmission power of the gear transmission system is increasing and the speed of the gear is speeding up, which not only makes the vibration and noise problems of the reducer more acute, but also affects the safety and stability of the whole unit. Profile modification is a key technology in the design and manufacture of high precision gear transmission. It is a very important method to solve the problem of vibration and noise of gear transmission. Combined with the basic theory of gear system dynamics, this paper summarizes the dynamic excitation principle, mathematical models and dynamic characteristics of gear system, and focuses on meshing stiffness. The mechanism of three internal excitations, such as meshing error and meshing shock, is discussed deeply. Through the joint dynamic simulation of ADAMS and ANSYS software, the flexible body dynamics model of gear system is established, and the dynamic characteristics of gear meshing force are studied. According to the basic principle of tooth profile modification in gear system, the contact finite element model of gear tooth meshing position is established by using finite element method, and the maximum modification quantity of gear tooth profile modification is determined. According to four kinds of common modification curves, the modification quantity of different meshing position is calculated, and the modification curve is accurately fitted by drawing point method, and the solid geometric model of modified gear is established, and the dynamic simulation analysis and comparison are carried out. The rationality of tooth profile modification is confirmed, and then the vibration characteristic of gear dynamic meshing force is taken as the performance index, and the optimal profile modification curve is selected according to the working conditions in this paper. Finally, a method of determining gear profile modification and selecting profile modification curve by using modern computer simulation technology is summarized, which provides a theoretical basis for the research and practical application of tooth profile modification.
【學(xué)位授予單位】:合肥工業(yè)大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2012
【分類號】:TH132.46
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