共查询到19条相似文献,搜索用时 375 毫秒
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基于ANSYS直齿圆柱齿轮有限元模态分析 总被引:19,自引:0,他引:19
研究了直齿圆柱齿轮的固有振动特性,采用有限元法建立了直齿圆柱齿轮的动力学模型,通过有限元分析软件ANSYS对齿轮进行模态分析,得到了齿轮的低阶固有振动频率和主振型,可以为齿轮系统的动态设计提供参考,同时也为齿轮系统的动态响应计算和分析奠定了基础。 相似文献
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主要研究直齿圆柱齿轮的固有振动特性,利用ANSYS有限元软件建立直齿圆柱齿轮的三维模型并对其进行动力学模态分析,通过求解分析得到齿轮的低阶固有频率、主振型以及相对位移和相对应力,为齿轮及其系统的动态设计提供参考依据。 相似文献
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直齿圆锥齿轮参数化设计与原型件制造 总被引:1,自引:1,他引:0
以直齿圆锥齿轮为研究对象,使用三维设计软件Pro/E,通过分析直齿圆锥齿轮各个参数之间的关系,对直齿圆锥齿轮进行了参数化设计.参数化后的直齿圆锥齿轮可以通过改变各个相应驱动参数,能够快速得到不同参数的圆锥齿轮零件,体现了参数化设计快捷的优点.并对直齿圆锥齿轮进行陕速原型制造,为企业在产品开发中提供宏观上的模型,减少了企业开发新产品的成本和缩短了产品设计、制造的周期. 相似文献
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利用UG实现直齿圆锥齿轮的三维造型 总被引:6,自引:0,他引:6
利用UG软件的相关功能,生成直齿圆锥齿轮的当量齿轮的齿廓曲线,并沿分度圆锥母线扫描获得齿廓曲面片体;通过对片体进行裁剪缝合操作生成单个轮齿实体,然后通过布尔运算获得完整的直齿圆锥齿轮,从而实现对直齿圆锥齿轮的三维造型。 相似文献
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Pinion tooth surface generation strategy of spiral bevel gears 总被引:1,自引:0,他引:1
Aviation spiral bevel gears are often generated by spiral generated modified(SGM) roll method.In this style,pinion tooth surface modified generation strategy has an important influence on the meshing and contact performances.For the optimal contact pattern and transmission error function,local synthesis is applied to obtain the machine-tool settings of pinion.For digitized machine,four tooth surface generation styles of pinion are proposed.For every style,tooth contact analysis(TCA) is applied to obtain contact pattern and transmission error function.For the difference between TCA transmission error function and design objective curve,the degree of symmetry and agreement are defined and the corresponding sub-objective functions are established.Linear weighted combination method is applied to get an equivalent objective function to evaluate the shape of transmission error function.The computer programs for the process above are developed to analyze the meshing performances of the four pinion tooth surface generation styles for a pair of aviation spiral bevel gears with 38/43 teeth numbers.The four analytical results are compared with each other and show that the incomplete modified roll is optimal for this gear pair.This study is an expansion to generation strategy of spiral bevel gears,and offers new alternatives to computer numerical control(CNC) manufacture of spiral bevel gears. 相似文献
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弧齿锥齿轮传动系统的非线性振动特性研究 总被引:5,自引:0,他引:5
基于集中参数法建立了弧齿锥齿轮的多自由度弯-扭-轴-摆耦合振动三维空间十二自由度动力学模型。模型中考虑了传动轴和轴承的弹性变形以及齿轮的啮合刚度激励、误差激励和啮合冲击激励。在忽略扭摆振动的基础上,系统等效处理为八自由度模型,通过引入状态变量并用五阶变步长自适应Runge—Kutta数值积分方法直接求解该多自由度模型,得到系统的动态响应。随激励频率60h的改变,系统将出现单周期简谐、多周期次谐、拟周期和混沌响应,且发现各周期响应的过渡是通过拟周期的分叉实现的。 相似文献
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To obtain the change tendency of output angular velocity and tangential contact force of a gear when the pinion under the step input during meshing of a new type of spiral bevel gear, which is a logarithmic spiral bevel gear, the tooth flank equation of logarithmic spiral bevel gear is deduced based on the formation mechanism of the tooth flank formation. A three-dimensional model of a pair of logarithmic spiral bevel gears whose number of teeth was 37:9, with modules being 4.5 mm, normal pressure angle being 20 degrees and spiral angle being 35 degrees were built and assembled. Based on Hertz elastic contact theory, the calculation formulas and parameters sets of contact force for conventional spiral bevel gear meshing simulation and logarithmic spiral bevel gear meshing simulation were done. Consider the dynamic simulation about meshing angular velocity and tangential contact force for conventional spiral bevel gear meshing and logarithmic spiral bevel gear meshing, respectively. Finally, by analyzing and comparing the simulation data, the results show that under the same input conditions, the fluctuation of the gear angular velocity and tangential contact force of logarithmic spiral bevel gear meshing are smaller than the conventional spiral bevel gear. That is, the transmission stationary of logarithmic spiral bevel gear meshing is superior to conventional spiral bevel gear. 相似文献
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Fuhao Liu Hanjun Jiang Shaona Liu Xuehua Yu 《Journal of Mechanical Science and Technology》2016,30(12):5363-5370
A new analytical model of a spur gear system with sliding friction is presented. Unlike previous models, the excitation consists of two parts: the rotational driving speed of the pinion and the drag torque acting on the gear. The proposed model was validated with the finite element model. Using numerical method, the steady state resolutions was obtained to mainly demonstrate the nonlinear characteristics under both constant and variable excitations. The results obtained illustrate that sliding friction could introduce additional vibration. Moreover, the sliding friction even could decrease the dynamic transmission errors under proper operation condition. Further, the bifurcation diagram was plotted to show the influence of the rotational driving speed of the pinion on the dynamical characteristic of the gear system. Finally, the fluctuated excitation was used to exhibit their different effects on the gear system, which should form the basis of further analytical and experimental work in the gear dynamic area. 相似文献
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有误差的螺旋锥齿轮传动接触分析 总被引:13,自引:2,他引:11
以多体系统误差建模理论和齿轮啮合原理为基础,提出含有机床运动几何误差以及齿轮副安装误差的螺旋锥齿轮齿面接触分析(Error tooth contact analysis, ETCA)方法。以SGM法(大轮展成法加工,小轮变形法加工)加工的弧齿锥齿轮为例,通过ETCA分析,得到机床运动误差和安装误差对螺旋锥齿轮齿面加工质量影响的定量关系,对ETCA和TCA的结果进行对比分析,结果表明机床运动误差和安装误差对螺旋锥齿轮的齿面接触质量有较大的影响,为了通过齿面接触分析达到更准确的反调加工参数的目的,采用ETCA的分析结果指导加工参数反调更为合理。 相似文献
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为解决烟库搅烟传动装置的润滑油易渗入到搅烟电动机内部,引起绕组损坏,烧毁直流电动机及控制器件的问题。将搅烟电动机的安装方式改变为立式。重新设计了弧齿圆锥齿轮、圆锥齿轮轴和锥齿轮传动箱,使电动机动力输出轴的前端盖位置高于原传动箱润滑油的液面位置,采用两个滚动轴承将圆锥齿轮轴固定在锥齿轮传动箱内。经半年的试运行,新的烟库搅烟传动装置传动平稳,运行可靠,在车间所有设备推广使用,未发生烧毁直流电动机及控制器件的现象,改进效果明显。 相似文献
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航空弧齿锥齿轮往往在高速重载下工作,它的动态特性是齿轮设计和使用中非常重要的依据。作者计算了螺旋角、支承结构、齿轮辐板的扭转刚度和轴向刚度、传动误差幅值以及齿数对齿轮系统动态特性的影响。计算结果表明,恰当地调整参数,进行合理的动态设计,将显著改善齿轮系统的动态特性。 相似文献