共查询到20条相似文献,搜索用时 203 毫秒
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对偶数齿齿轮组在中心距和分度圆直径受限状况下,采用CAD方法快速设计出任意传动比和传动精度内的各齿轮齿数的基本原理和程序设计作了较详细的介绍,并给出了设计齿轮组的BASIC程序。 相似文献
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非圆齿轮节曲线设计的新方法 总被引:7,自引:2,他引:5
通过将非圆齿轮转化成高精度分段圆齿轮的节曲线设计新方法,使得用圆齿轮代替非圆齿轮节曲线后,其逼近误差和弧长误差可控制到很小,从而使非圆齿轮的设计及加工问题简化成圆齿轮来解决,并在导出一种非圆齿轮低速大扭矩液压马达节曲线公式的基础上,用该方法对节曲线进行圆弧逼近,得到了极高的弧长封闭精度及逼近精度。 相似文献
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在变速箱齿轮加工中,热处理尤为重要,其是齿轮硬度、强度及耐磨性重要影响因素。热处理过程不但能够使得齿轮机械性能得到改善,同样会使得尺寸出现改变,并且加工精度会减小,减小齿轮传动精度,导致齿轮传动形成强烈的噪音及异响,有的时候还会使得齿轮寿命缩短的现象。 相似文献
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为解决TY130变矩器与分动箱齿轮产生异常噪声的问题,通过观察现象,分析原因,找到齿轮噪声产生的根本原因.通过改进齿轮设计,改变热处理方式,调整刀具与加工方法,提高齿轮精度,使得改进后的齿轮再无异常噪声的现象出现. 相似文献
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齿轮传动的精度在一定程度上影响着整台机器的质量,在进行齿轮精度设计时对齿轮精度要求也各不相同,而不同的齿轮精度将会使齿轮的加工成本受到影响。在齿轮精度设计过程中如何在保证齿轮正常传动下,降低齿轮加工成本,即齿轮精度设计过程中其经济精度的确定。分析结果显示,利用该方法进行渐开线圆柱齿轮精度设计,可降低企业成本,提高经济效益。 相似文献
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根据齿轮传动的不同要求,齿轮精度设计时齿轮精度要求也各不相同,而不同的齿轮精度要求将使齿轮的加工成本受到影响.讨论齿轮在精度设计过程中如何在保证齿轮传动的工作要求前提下,使齿轮加工成本经济合理,即齿轮精度设计过程中其经济精度的确定.分析结果显示,利用该方法进行渐开线圆柱齿轮精度设计,可降低企业成本,提高经济效益. 相似文献
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展成法大轮准双曲面齿轮点啮合齿面主动设计 总被引:2,自引:0,他引:2
为准双曲面齿轮传动点啮合齿面主动设计建立通用的技术平台对于方便点啮合齿面主动设计的实际应用和更加深入的锥齿轮技术研究都是一项重要的基础工作.基于三轴联动锥齿轮机床建立准双曲面齿轮展成法大轮齿面的通用数学模型.根据点啮合齿面主动设计的原理和方法,在大轮轴截面内描述空间齿面啮合的接触点迹线,推导得到了展成法大轮点啮合齿面主动设计所需要的具体计算公式.这些公式可用于不同展成型式的展成法大轮点啮合齿面主动设计.最后,给出了一个展成法大轮准双曲面齿轮传动点啮合齿面主动设计的算例. 相似文献
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本文介绍了新型高精度光纤微调装置的设计,通过确定最佳设计指标,使其结构更合理,成本更低廉;每一维自由度的调节在其空间上正交独立,操作方便;径向微调量可以达到0.1μm以下,具有较高调节精度。 相似文献
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基于两齿轮的几何中心连线等分回转中心连线的假设 (等分模型 ),建立了偏心渐开线齿轮传动分析和设计方程,分析了模型的误差。等分模型存在模型误差,但计算比较简便,当精度要求较低或者离心率较小时,可以用等分模型进行设计和计算,以便简化设计和计算过程,便于工程技术人员掌握。 相似文献
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Traditional gear weight optimization methods consider gear tooth number, module, face width or other dimension parameters of gear as design variables. However, due to the complicated form and geometric features peculiar to the gear, there will be large amounts of design parameters in gear design, and the influences of gear parameters changing on gear trains, transmission system and the whole equipment have to be taken into account, which increases the complexity of optimization problem. This paper puts forward to apply functionally graded materials(FGMs) to gears and then conduct the optimization. According to the force situation of gears, the material distribution form of FGM gears is determined. Then based on the performance parameters analysis of FGMs and the practical working demands for gears, a multi-objective optimization model is formed. Finally by using the goal driven optimization(GDO) method, the optimal material distribution is achieved, which makes gear weight and the maximum deformation be minimum and the maximum bending stress do not exceed the allowable stress. As an example, the applying of FGM to automotive transmission gear is conducted to illustrate the optimization design process and the result shows that under the condition of keeping the normal working performance of gear, the method achieves in greatly reducing the gear weight. This research proposes a FGM gears design method that is able to largely reduce the weight of gears by optimizing the microscopic material parameters instead of changing the macroscopic dimension parameters of gears, which reduces the complexity of gear weight optimization problem. 相似文献
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G. A. Timofeev 《Journal of Machinery Manufacture and Reliability》2016,45(3):191-198
Design diagrams of wave gears with external deformation wave generators based on a parallel crank mechanism are considered. Wave gears can be used to develop new drives with a high-quality rating in terms of efficiency, kinematic accuracy, torsional stiffness, and interesting layout solutions. In order to obtain the best possible ratings of these gears, it is necessary to determine if there are redundant constraints in the design and to reduce (or eliminate) them. To do this, one of the modern structural analysis methods, the graph method, is used. It makes it possible to find circuits with redundant constraints and reasonably eliminate them. The simplicity and illustrativeness of the method are shown. 相似文献
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A new design concept of a multi-turn absolute rotary encoder which is insensitive to the accuracy of encoder components is proposed. This new design does not demand high accuracy of the encoder structure other than the fundamental pattern to produce the least significant digit. The allowable error in the encoder structure is compensated by electronic light circuits. This absolute encoder has been applied to the measurement of height position in a cylindrical form-measuring system. The new encoders can be connected in series by reduction gears whose accuracy is fairly rough, so that a multi-turn device in realized. The allowable tolerances in the encoder structure are presented. 相似文献
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基于Pro/E和ANSYS的渐开线齿轮的参数化精确建模及接触分析 总被引:2,自引:0,他引:2
介绍了Pro/E建模软件进行渐开线齿轮精确建模的参数化方法及步骤,使得建模更加方便,其中利用渐开线方程,保证了渐开线齿轮齿廓的准确性。利用Pro/E与ANSYS的专用接口,将在Pro/E中建立的实体模型方便地导入到ANSYS中,进行网格划分、加载及求解。通过对于一个个间断的啮合点的接触应力的静力学分析,从而实现对单对轮齿从齿根到齿顶的连续啮合过程中接触应力的仿真分析,进一步了解齿轮啮合过程中从齿根到齿顶接触应力的变化规律,从而验证了ANSYS进行有限元接触分析的精确性,为齿轮的优化设计提供了理论依据 相似文献