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双圆弧修正摆线齿轮行星轮系啮合性能的研究

发布时间:2018-01-31 01:32

  本文关键词: 双圆弧修正摆线齿轮 接触强度 分形理论 仿真 疲劳寿命 出处:《昆明理工大学》2011年硕士论文 论文类型:学位论文


【摘要】:目前,摆线齿轮主要应用于钟表、仪器和仪表中,它具有体积小、无根切、传动平稳、重合度大等优点,更多地被应用到一些精度要求很高的场合,尤其在军械、钟表等行业应用广泛。工程中主要使用修正摆线齿轮,目前有三种常用的修正摆线齿轮:钟表齿轮、双圆弧修正摆线齿轮及摆线针轮。由于对双圆弧修正摆线齿轮缺乏系统性的理论研究,本论文将针对双圆弧修正摆线齿轮的啮合性能进行研究。 双圆弧修正摆线齿轮的加工特点为:模数相同,齿数不同的双圆弧齿轮,可以用同一把滚刀滚切,使滚刀品种可以减少,大大降低了加工成本。传动特点为:啮合齿廓为内外凸凹圆弧面接触,其接触面积大,接触应力小,传动效率高;传动过程中,传动比为定值,传动平稳、可靠;侧隙和顶隙较大,传动灵活;齿顶高和齿根高较小,不容易卡滞;轮齿根部有较宽的齿厚,提高了轮齿根部的弯曲强度。 本文首先建立了齿轮齿廓的参数化数学模型,用UG三维软件建立了齿轮模型。其次,本文主要研究轮齿的接触性能,传统的齿轮接触是建立在Hertz理论上的,Hertz模型是从物体的宏观特性进行研究的,能较正确地反映两接触齿轮的应力状态,但没有考虑接触体的表面微观特性,如接触表面的形貌特征及其表面粗糙度等对接触强度的影响,而分形理论对齿轮接触的微观特性提供了较好的研究,充分考虑到两齿轮的微观特性因素。本文将从宏观和微观两个方面出发对双圆弧修正摆线齿轮的轮齿接触强度进行研究,利用分形理论研究齿轮啮合的接触强度,利用有限元软件UG/NAS TRAN进行有限元分析;再次,基于FE-safe软件对齿轮的接触疲劳寿命进行分析,并对疲劳寿命进行了预测;最后,基于ADAMS对齿轮的动力学性能进行分析,提取相关数据的图表进行分析。 通过本论文的研究,有助于齿轮加工制造的优化设计,并为实际加工制造中设计效率、产品质量及可靠性的提高提供了理论依据,促使双圆弧修正摆线齿轮更广泛地应用于高接触强度、高寿命的齿轮传动系统中。
[Abstract]:At present, cycloidal gear is mainly used in clocks, instruments and instruments. It has the advantages of small volume, rootless cutting, stable transmission, high coincidence, and so on. Especially in the ordnance, clock and other industries widely used. The main engineering use of modified cycloidal gear, there are three kinds of commonly used modified cycloidal gear: clock gear. Due to the lack of systematic theoretical research on double circular arc modified cycloidal gear, the meshing performance of double circular arc modified cycloidal gear is studied in this paper. The machining characteristics of double circular arc modified cycloidal gear are as follows: double circular arc gear with the same modulus and different teeth can be hobbed with the same hob so that the variety of hob can be reduced. The characteristics of the transmission are as follows: the tooth profile is internal and external convex and concave arc contact, its contact area is large, the contact stress is small, and the transmission efficiency is high; In the process of transmission, the transmission ratio is fixed, the transmission is stable and reliable; Large clearance and top gap, flexible transmission; The tooth top height and the tooth root height are smaller, not easy to get stuck; There is a wide tooth thickness at the root of the gear, which increases the bending strength of the root of the gear. In this paper, the parameterized mathematical model of gear tooth profile is established, and the gear model is established by UG software. Secondly, the contact performance of gear tooth is studied in this paper. The traditional gear contact model, which is based on Hertz theory, is studied from the macroscopic characteristics of the object, which can accurately reflect the stress state of the two contact gears. However, the influence of the contact surface on the contact strength is not taken into account, such as the morphology of the contact surface and the surface roughness, while the fractal theory provides a better study on the contact microcosmic characteristics of the gear. In this paper, the tooth contact strength of double circular arc modified cycloidal gear is studied from macro and micro aspects. The contact strength of gear meshing is studied by fractal theory, and finite element analysis is carried out by finite element software UG/NAS TRAN. Thirdly, the contact fatigue life of gear is analyzed based on FE-safe software, and the fatigue life is predicted. Finally, the dynamic performance of gear is analyzed based on ADAMS, and the graph of relevant data is extracted for analysis. Through the research of this paper, it is helpful to the optimization design of gear machining and manufacturing, and provides the theoretical basis for the improvement of design efficiency, product quality and reliability in actual manufacturing. The double circular arc correction cycloidal gear is more widely used in the gear transmission system with high contact strength and long service life.
【学位授予单位】:昆明理工大学
【学位级别】:硕士
【学位授予年份】:2011
【分类号】:TH132.41

【参考文献】

相关期刊论文 前10条

1 杨桂萍,冷永胜;理想粗糙表面的弹性全接触研究[J];北方工业大学学报;1998年03期

2 李力行;洪淳赫;;摆线针轮行星传动中摆线轮齿形通用方程式的研究[J];大连铁道学院学报;1992年01期

3 成万植;有限元分析在常规强度计算工作中的地位和作用[J];飞机设计;2002年04期

4 李伯奎,杨凯,刘远伟;分形理论及分形参数计算方法[J];工具技术;2004年12期

5 刘更,吴立言;内啮合直齿轮的三维接触应力分析[J];计算结构力学及其应用;1994年01期

6 龙凯,程颖;齿轮啮合力仿真计算的参数选取研究[J];计算机仿真;2002年06期

7 黄泽平;马吉胜;吴大林;;齿轮轮齿接触力仿真研究[J];机械传动;2007年02期

8 陈赛克;王毅;;基于精确模型的齿轮接触疲劳寿命有限元分析[J];机械传动;2007年02期

9 周春国;王付岗;刘宏昭;崔亚辉;;基于虚拟样机的行星齿轮机构效率仿真分析[J];机械传动;2009年04期

10 王建明,刘才山,周学军;内、外啮合斜齿轮三维接触应力有限元分析[J];机械传动;1998年03期

相关硕士学位论文 前2条

1 姚静媛;双圆弧齿轮的啮合特性研究及仿真[D];太原理工大学;2006年

2 仰荣德;凹凸啮合齿轮接触强度计算的分形方法研究[D];合肥工业大学;2009年



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