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面齿轮传动安装误差特性研究 总被引:1,自引:0,他引:1
对渐开线直齿圆柱齿轮和面齿轮的啮合传动的安装误差范围进行了研究。建立了面齿轮齿面方程,应用微分几何和啮合原理形成了齿面啮合迹;通过分析齿面啮合点处的弹性变形与其曲率的关系,得到了面齿轮上的齿面啮合域;最后分析了安装误差对传动误差和啮合域的影响,并确定了满足设计啮合域要求的安装误差变动范围。 相似文献
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针对双渐开线齿轮传动动态特性问题,通过建立双渐开线齿轮的有限元模型,综合考虑齿面摩擦与齿轮啮合刚度二因素,对双渐开线齿轮传动系统进行了有限元模态分析,运用响应曲面法研究了齿面摩擦与齿轮啮合刚度对双渐开线齿轮振动变形和模态频率的影响;选取不同模态阶数对双渐开线齿轮传动系统进行了动态特性研究,分析了不同模态阶数下双渐开线齿轮的振动变形与模态频率变化状况。研究结果表明,随着齿面摩擦因数与齿轮啮合刚度的增加,不同模态阶数下双渐开线齿轮传动系统各阶振动变形与模态频率均显著增加,齿面摩擦与齿轮啮合刚度对双渐开线齿轮传动动态特性有一定影响,在对齿轮传动系统进行动态特性研究时,必须对齿面摩擦与齿轮啮合刚度进行充分考虑。 相似文献
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对渐开线斜齿圆柱齿轮和面齿轮的啮合传动进行了研究,从齿面的几何计算入手建立了斜齿轮和面齿轮的齿面方程,并在此基础上形成了数值齿面。本文还研究了系统的安装误差,并把系统的安装误差分解为偏置距,径向误差,轴线夹角误差。在此基础上利用计算机编程仿真的方法,重点研究了一对齿轮在两项误差为零的情况下,其中一项误差对啮合迹线在齿面上的位置的影响。 相似文献
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双渐开线齿轮传动的啮合分析 总被引:4,自引:1,他引:3
从双渐开线齿轮基本齿廓的定义出发 ,基于包络曲面法原理 ,导出双渐开线齿轮各部分齿面方程通用表达式 ,应用啮合理论 ,给出双渐开线齿轮正确啮合条件及无侧隙啮合方程式 相似文献
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《机械制造与自动化》2017,(6)
环面渐开线齿轮作为一种既可作平行轴传动,又可作相交轴传动,对安装误差不敏感的新型齿轮,其啮合刚度的研究是进行动力学分析的基础。基于数值计算法生成齿面三维坐标点,建立环面渐开线齿轮的三维实体模型;采用Hyper Mesh和ABAQUS软件对环面齿轮模型进行有限元前处理,包括网格划分、耦合约束、边界条件及载荷设置;分析齿面啮合点处的法向接触力及综合弹性变形量,根据计算公式拟合单齿啮合刚度与多齿综合啮合刚度曲线;分析比较转矩对环面齿轮重合度与时变啮合刚度的影响。 相似文献
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齿轮副的安装误差会改变齿轮副的啮合状态。对于零载荷传动时的齿轮副,不考虑其制造误差,由于安装误差的存在,当一侧端面两轮齿渐开线齿廓啮合时,同一啮合齿对另一侧端面两渐开线齿廓并不一定啮合。将不啮合一侧端面两轮齿齿廓在啮合线上的两点的距离称为接触线偏差。以接触线偏差作为安装误差对齿轮副齿向接触均匀程度的影响的评判指标,对安装误差进行了分析,得到了误差与接触线偏差的关系式以及各类安装误差对齿轮副齿向接触的影响程度,并利用有限元仿真对存在安装误差的齿轮副做了接触分析及验证。 相似文献
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分阶式双渐开线齿轮啮合特性分析 总被引:5,自引:0,他引:5
分阶式双渐开线齿轮是一种新型齿轮,故对其传动的重合度、接触线长度等进行了分析研究,给出双渐开线齿轮传动重合度、总接触线长度的精确计算公式,并提出端面重合度与纵向重合度的最佳组合及最差组合条件,其结果对设计、分析渐开线斜齿轮及双渐开线齿轮传动具有重要意义。 相似文献
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Shyue-Cheng Yang 《The International Journal of Advanced Manufacturing Technology》2005,26(5-6):448-456
This paper describes a simple approach based on the gear theory for deriving a helical gear with asymmetric involute teeth. A helical gear with asymmetric involute teeth can be easily obtained through the envelope theory for the one-parameter family of surfaces. The mathematical models for asymmetric helical gears can be provided by the application of two imaginary rack cutters. The investigation on the undercutting analysis of the asymmetric helical gear is studied based on the developed mathematical model and the method of tooth-profile shifting. Here we provide geometric modeling of the designed asymmetric helical gear meshing when assembly errors are present. Stress analysis for the helical and the cylindrical forms are constructed. To illustrate the effectiveness of the approach, an analytical expression of helical gear with asymmetric involute teeth is given. 相似文献
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This paper describes a simple approach based on the gear theory for deriving a helical gear with asymmetric involute teeth. A helical gear with asymmetric involute teeth can be easily obtained through the envelope theory for the one-parameter family of surfaces. The mathematical models for asymmetric helical gears can be provided by the application of two imaginary rack cutters. The investigation on the undercutting analysis of the asymmetric helical gear is studied based on the developed mathematical model and the method of tooth-profile shifting. Here we provide geometric modeling of the designed asymmetric helical gear meshing when assembly errors are present. Stress analysis for the helical and the cylindrical forms are constructed. To illustrate the effectiveness of the approach, an analytical expression of helical gear with asymmetric involute teeth is given. 相似文献
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Jing Wei Pan Gao Xinglong Hu Wei Sun Jing Zeng 《Journal of Mechanical Science and Technology》2014,28(6):2253-2262
Transmission error is an important reason for instability in helical gears. A six-degree-of-freedom dynamic model coupled flexional, torsional and axial motion of a helical gear transmission system, which includes time varying mesh stiffness, bearing supporting stiffness, mesh damping and backlash, is developed, after taking into account the dynamic characteristics and vibration responses of helical gear in three dimensions. Influences of involute contact ratio, bearing supporting stiffness, mesh damping and backlash on the dynamic transmission errors and vibration stability of the helical gear system are investigated using numerical simulation technique. The effects on dynamic transmission errors and stabilities by contact ratio, supporting stiffness and mesh damping as well as gear backlash are analyzed. The intrinsic relationship between above parameters and dynamic transmission errors and stabilities for helical gear system are presented. The stable and unstable regions under different parameters are given. The results in this paper can be helpful to the dynamic and stable design of a helical gear transmission system. 相似文献
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Bevel gear processing has diversified based on constant technical developments in forging, CNC cutting and hob design. Standardization
of bevel gears is in higher demand than ever for different bevel gear systems that have different shapes and forms according
to processing methods. With advantages such as excellent compatibility and the ability to absorb assembly errors well, the
involute gear is referred to as the spherical involute tooth profile in bevel gear systems. This paper explains the geometrical
characteristics and kinematic behavior of spherical involute gears. A spherical involute function is derived to effectively
represent tooth profiles, and a common basic rack is developed using the equation of meshing to generate spherical involute
gears. This study also analyzes the general characteristics of spherical involute gears and discusses the issue of bevel-gear
standardization. 相似文献
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为了制造出高精度硬齿面斜齿面齿轮和获得抛物线传动误差并改善啮合性能,对采用碟形砂轮加工双向修形的斜齿面齿轮的磨齿方法进行了研究。设计了渐开线失配的碟形砂轮齿面,分析了碟形砂轮磨削斜齿面齿轮的展成原理,根据展成原理和用渐开线失配的碟形砂轮并改变砂轮的运动,推导出双向修形斜齿面齿轮的齿面方程。给出了双向修形斜齿面齿轮的齿面计算和接触分析实例,结果表明:理论齿面的最大齿面误差为5.98×10-4μm,采用碟形砂轮加工双向修形斜齿面齿轮的磨齿方法是可行的,获得了斜齿面齿轮抛物线传动误差,避免了边缘接触并改善了斜齿面齿轮的啮合性能。 相似文献
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In simulation of the three-dimensional contact problem for modified (barrel-shaped) gear teeth in cylindrical straight-tooth involute transmissions, skewing of the gear shafts due to manufacturing and assembly errors and to deformation of the drive components under load is taken into account. With considerable skewing, the limiting factor is not the normal stress but the effective contact stress. 相似文献
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In this study, the forging processes of helical gears have been investigated wherein they have been classified into two types: the guiding type and the clamping types. These two types of forgings of helical gears have been analyzed by using the upper-bound method. New kinematically admissible velocity fields of the clamping-type forging of helical gears have been proposed, where an involute curve has been introduced to represent the tooth profile of the gear. The proposed velocity fields of the clamping-type forging of helical gears have been applied to the non-symmetric lateral extrusion forging and the result has been compared with the solution proposed by Plancak et al. [J. Mater. Process. Technol. 1992; 34:465–472]. Numerical calculations have been carried out to investigate the effects of various parameters, such as modules, number of teeth, helix angles and friction factors on the clamping-type forging of helical gears. For the forging of helical gears, the results of the upper-bound analysis of the clamping type have been compared with those of the guiding ones. Some experiments of the clamping-type forging were carried out with commercial aluminum alloy to show the validity of the analysis. Good agreement was found between the predicted values of the forging load and the experimental forging load. 相似文献