共查询到20条相似文献,搜索用时 468 毫秒
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针对齿轮挤压模具型腔易损坏、精度和效率低等弊病,引入流曲线和Bezier曲线理论,建立挤压型腔参数化模型,利用Pro/E软件的造型和图形交互功能,实现型腔的实体模型建立及高速铣削模拟。 相似文献
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小模数塑料齿轮用于电器产品上的传动零件,应用广泛。目前齿轮型腔成形计算尚无规范可循,尤其是小模数变位齿轮,欲保证精确的渐开线形状,需要涉及齿轮成形的非线性收缩计算,以及型腔齿形的制造等问题。一、塑料齿轮的齿邢参数已知外啮合塑料直齿轮模数m,齿数Z,压力角a,变位系数x,啮合齿轮齿数Z’,喻合角a’,中心距A’,在进行型腔齿形计算前,先计算出塑料齿轮的齿形参数。对角变位齿轮,标准中心距为A=m(Z+Z’)/2,啥合中心距为A’=A·(cosa/cosa’),中心距的变动系数为罗。(A’一A)/m,总变位系数为:xx。【(z… 相似文献
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基于UG的圆柱直齿轮参数化建模及有限元分析 总被引:2,自引:0,他引:2
根据渐开线齿轮的成形原理,在UG环境下完成了圆柱直齿轮的参数化建模,根据振动力学及有限元理论在UG/Structure模块中建立了圆柱直齿轮的有限元模型,通过计算机仿真提取了前5阶的固有频率及振型,为改善齿轮零件的频率响应特性、工作中的可靠性提供了依据。 相似文献
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分析渐开线圆柱齿轮中齿廓渐开线的形成,推导其参数方程;利用Pro/E三维建模软件中参数和关系建模方法,创建渐开线圆柱齿轮,实现渐开线圆柱齿轮三维建模的参数化控制,为齿轮的后续完善设计、运动和受力分析、制造提供依据。 相似文献
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这里针对计算渐开线直齿圆柱齿轮的各几何尺寸,用Visual Basic设计了一个程序软件,该软件对标准齿轮和变位齿轮均适用,可以迅速、准确地计算出结果,大大减少了手工劳动,提高了工作效率。特别是在变位齿轮啮合角的计算中,起到了重要作用。并以一对无侧隙啮合的渐开线变位齿轮为例进行说明。然后在Pro/E2001下实现渐开线变位齿轮的精确造型,以及在此环境下的动态仿真设计。 相似文献
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This paper deals with prediction of wear in spur gears, which has been calculated using an approach in which the wear depth on a tooth surface is integrated over time using the Euler integration method. Variations in pressure distribution over the surface have been considered, as well as changes in curvature and surface profile of the teeth as they wear. The paper focuses on the use of an appropriate wear model for simulating wear using calculated conditions between high-performance slow-running lubricated spur gears. A numerical model for prediction of surface interaction of spur gears developed earlier by the authors has been applied as the basis for the simulation of wear using different wear models. Owing to the nature of the wear models, methods of calculating the contact temperature have been investigated for the specific case of interacting gear teeth. It was found that a linear wear model, when compared with a more complex oxidation model and with a model based on adsorption of lubricant molecules, satisfactorily predicts wear. It was also found that it is the geometry of the gears that causes sliding velocity to be the dominant wear-inducing factor, and so determines the general nature of the wear behaviour. 相似文献
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许金瑞 《机械工程与自动化》2011,(2)
基于CAXA制造工程师软件平台,根据渐开线的参数方程及渐开线直齿圆柱齿轮的形成原理,通过建立精确的渐开线齿轮的齿廓,实现渐开线直齿圆柱齿轮的三维精确造型。该方法为渐开线直齿圆柱齿轮的设计、分析及加工制造提供了依据。 相似文献
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通过渐开线直齿轮齿廓方程在MATLAB中构建出渐开线直齿轮的点云模型生成精确地齿廓,将点云数据导入到SolidWorks中构建出齿廓精确的渐开线直齿轮副的三维模型;然后对渐开线直齿轮副进行理论接触应力计算,并对联合建模的齿轮副与参数化建模的齿轮副进行接触应力的有限元仿真分析和动力学仿真分析结果进行对比.结果表明:联合建... 相似文献
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A mathematical model is proposed for geometric measurements of cylindrical spur gears using triaxial coordinate-measurement machines. The measurement errors associated with the proposed model are compared with those of the standard method. 相似文献