共查询到18条相似文献,搜索用时 62 毫秒
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任意转角位置的双渐开线齿轮的齿面数学模型 总被引:6,自引:0,他引:6
运用渐开线展开和曲线包络原理,建立了双渐开线齿轮端面齿廓数学模型,用数据验证了模型的准确性。在端面齿廓数学模型基础上建立了任意转角位置的双渐开线齿轮齿面数学模型,使用该模型获得了三种典型刀具齿顶圆弧半径的双渐开线齿轮三维仿真图形,并进行了啮合仿真,从而验证了齿面数学模型的正确性和可行性。该齿面数学模型表述简单,使用时无须坐标变换,能快速、真实地描述双渐开线齿轮任一轮齿在任意转角位置时齿面上的任一点。为双渐开线齿轮三维数字化设计、制造,啮合干涉、运动学和动力学分析提供了简捷的新理论依据。 相似文献
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准端面双圆弧齿轮及其齿面方程 总被引:3,自引:0,他引:3
叙述了准端面双圆弧齿轮的形成原理,推导了了这种齿轮的通用齿面方程通过端面齿廓图谱的分析,经与目前广为采用的法面圆弧齿轮以及理想的端面圆齿轮的对比,指出了准确面圆弧齿轮在克服法面圆弧齿轮传动接触区位置对误差敏感性方面所具有的独特优点; 相似文献
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根据激光加工的特点,讨论了用激光切割的方法加工薄形渐开线可能性。在标准齿轮啮合理论基础之上,找出适用于激光加工的齿廓曲线方程的表达形式,并确定出齿廓各段曲线连接点的坐标。 相似文献
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根据齿轮误差同变速器噪声的关系来看,齿形误差是影响变速器噪声的最重要的因素之一。齿形误差包括两个方面:齿形的形状误差和压力角偏差。对于齿形而言,齿形的形状影响噪声,鼓形齿形可以降低变速器噪声。 相似文献
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双渐开线齿轮是一种新型渐开线齿轮。这些齿轮的齿廓由两组渐开线和连接它们的过渡曲线组成,形成阶梯形。基于等强度原则,利用有限元关于接触强度、弯曲率强度分析计算结果,建立了双渐开线齿轮齿廓参数优化数学模型,并进行优化,给出双渐开线齿轮滚刀前刀面齿廓方程,并利用优化结果,设计、加工出双渐开线齿轮滚刀。 相似文献
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Ognyan AlipievAuthor Vitae 《Mechanism and Machine Theory》2011,46(1):10-32
The index gear drive potential is defined for the estimation of the quality of spur gear drives as a maximum contact ratio obtained at the contact of teeth profiles along the full line of action. In this paper, a new method is proposed for the geometric design of symmetric and asymmetric involute meshing in which the contact ratio of the gear drive is equal to its potential. This method is appropriate for the geometric design of spur gears with a small teeth number and is based on the generalized model of involute meshing. The gear drive potential is assigned as an input value, from which, after appropriate calculations, the geometry of rack-cutters, gears and involute meshing can be determined. Using the proposed method, the areas of the realized potential and the areas of the existence of involute gear drives are defined. In addition, many numerical examples are solved. In the cases of symmetric and asymmetric meshing, the minimum teeth number is obtained when the gear drive potential is larger than one. 相似文献
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齿轮传动是一种常见的机械传动形式。其中齿数少于10的少齿数齿轮是一种特殊齿轮,已经形成了一系列设计理论和方法。随着CAD/CAM技术的发展,分析少齿轮传动的平稳性和可靠性的方法除了物理样机试验外,在设计早期,虚拟样机技术是一种方便快捷、低成本的方法。提出基于虚拟样机技术对设计的渐开线少齿数齿轮传动进行运动和动力性能分析,提高设计成功率的思想。通过建立精确的三维模型,设置仿真运行环境,仿真后分析,确保传动过程连续、平稳。 相似文献
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运用渐开线变位齿轮传动设计原理,建立了渐开线少齿差行星齿轮传动变位系数选择的约束模型,依据AutoCAD2000版本开发出了渐开线少齿差行星齿传动变位系数选择软件模块,从而大大提高了渐开线少齿差行星齿轮传动的设计效率和设计质量。 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 analyses the thermo-elastohydrodynamic lubrication on an involute spur gear tooth surface and the influence of the inlet temperature of the lubricant. The oil film temperature distribution shows a minimum near the point where the pressure distribution is a maximum and the energy loss a minimum. Then the temperature increases slightly in the outlet region. Calculated results show a decrease of a few percent in the maximum pressure distribution compared with an oil film on a rigid surface. Based on oil film thickness and gear tooth deflection, the load sharing coefficient and the relative transmitting errors are calculated. The behaviour of the oil film due to the variation of the normal tooth load at the transition point of the meshing is investigated also 相似文献