共查询到19条相似文献,搜索用时 312 毫秒
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双圆弧齿轮凸、凹齿同时加载的齿腰弯曲应力 总被引:1,自引:1,他引:0
根据任意转角位置的双圆弧齿轮齿廓数学模型,运用Pro/E软件构建了双圆弧齿轮模型,首先分析比较了仅在凸齿处加载和在凸、凹齿处同时加载两种不同加载方式时的齿腰弯曲应力,然后在轮齿的凸、凹齿处同时加载,对齿腰处的弯曲应力进行了有限元分析,得出了双圆弧齿轮齿腰弯曲应力与螺旋角、模数、齿数的关系曲线。其分析结果将为双圆弧齿轮设计和制造等提供参考依据。 相似文献
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直齿面齿轮加载啮合有限元仿真分析 总被引:20,自引:0,他引:20
研究正交面齿轮在加载条件下面齿轮啮合的传动性能参数、齿面接触应力和轮齿弯曲应力变化规律的有限元分析计算关键技术,以赫兹接触应力解析公式计算结果为对比,提出接触应力和弯曲应力计算的有限元网格密度确定方法。根据面齿轮重合度,分析面齿轮加载啮合仿真的五齿模型和七齿模型适用场合,给出面齿轮在啮合过程中的齿面接触应力和齿根弯曲应力最大值位置,计算面齿轮多齿模型接触应力及弯曲应力极值,准确得到面齿轮传动的重合度、传动误差、载荷分布系数等传动性能参数,以及载荷对这些传动性能参数的影响规律。研究结果表明,赫兹接触应力解析公式计算的结果合理地确定了有限元模型的网格密度,有限元仿真得到的应力值可靠,传动性能参数的分析结论正确。 相似文献
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《机械工人(冷加工)》1960,(6)
八、基圆螺旋角的测算用测算正齿轮基节和基圆齿厚的方法,在斜齿轮的法面上来测量,就可以测算出斜齿轮法面的基节和基圆齿厚。测出法面的基节和基圆齿厚以后,便可测实基圆螺旋角。下面介绍两种测算基圆螺旋角的方法。1.用图17所示的方法测出斜齿轮的轴向齿距 P。如果斜齿轮的螺旋角较小,在轴线方向量不到两个齿相应点的距离时,可以把齿顶涂上印泥在纸上 相似文献
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介绍了成形法和展成法两种加工斜齿内齿轮的方法。详细介绍了用展成法加工斜齿内齿轮时,其螺旋导轨导程和斜齿插齿刀螺旋角尻的确定,以及工件法面模数帆的计算。并用公式表述了螺旋导轨导程、螺旋角及模数等参数之间的关系。 相似文献
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我厂以前加工的胶木小模数斜齿轮,45°螺旋角误差较大,相邻齿的螺旋角一致性也较差。因而使齿轮相邻周节误差大,瞬时传动比变化大,工作不平稳,齿轮噪声大。为此,我们采用钢质齿轮与胶木齿轮跑合进行修正。胶木齿轮跑合后,螺旋角误差减小,相邻齿螺旋角一致性明显好转,齿面光洁度提高,工作平稳,噪声减小,效果良好。具体跑合方法如下: (1) 将精度合格的钢质齿轮套在心棒上,顶在两顶尖之间,并用螺帽固定。并紧螺帽时用百分表检查 相似文献
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Tooth contact analysis of face-gear drives 总被引:1,自引:0,他引:1
Shuo-Hung Chang Tsang-Dong Chung Shui-Shong Lu 《International Journal of Mechanical Sciences》2000,42(3):487
Based on the face-gear generation process, the analytical geometry of the face-gear drive and its mathematical model for tooth contact analysis of the face-gear and the spur pinion meshing were derived. The tooth contact paths and the transmission errors due to assembly error along the axis of face-gear, misalignment of crossed and angular displacements between axes of spur pinion and face-gear were analyzed. Furthermore, the conditions of undercutting and pointing in the generation process were studied. Several design charts were then developed. Finally, the conditions of undercutting and pointing for a face-gear drive were all identified in meshing with and without assembly error along the direction of the axis of face-gear and misalignment of angular displacement between axes of spur pinion and face-gear. Several numerical examples were also presented. 相似文献
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基于斜齿小齿轮的面齿轮的齿面生成研究 总被引:1,自引:0,他引:1
文中提出了基于斜齿小齿轮的面齿轮传动的两种几何设计方法,一种是利用传统的螺旋渐开线小齿轮的包络原理,另一种是利用由齿条刀具生成的小齿轮的包络原理;推导了两种情况下面齿轮的齿面方程,并讨论了齿宽的限制条件,实现了面齿轮齿面的可视化. 相似文献
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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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基于LS-DYNA的正交面齿轮动态接触分析 总被引:1,自引:0,他引:1
以圆柱齿轮和面齿轮传动为研究对象,采用齿轮啮合原理,分别形成了两者的齿面数据,在此基础上,采用CATIA形成了齿轮齿面,并对齿轮轮齿进行了几何实体造型,而后利用ANSYS/LS-DYNA对面齿轮进行动力学接触仿真分析,计算了齿轮副在动态啮合过程中齿面接触应力的变化情况,并对结果进行相应的分析。 相似文献
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In a given size of symmetric involute gear designed through conventional approach, as the load carrying capacity is restricted at the higher pressure angle due to tipping formation, the use of the asymmetric toothed gear to improve the fillet capacity in bending is examined in this study. Non-standard asymmetric rack cutters with required pressure angles and module are developed to generate the required pinion and gear of a drive with asymmetric involute surfaces and trochoidal fillet profiles. The respective profiles thus generated are optimized for balanced fillet stresses that are equal and possibly the lowest also. For this study of optimization, several non-standard asymmetric rack cutters are designed to accommodate different combinations in the values of pressure angle, top land thickness ratio, profile shift, speed ratio and the asymmetric factors. However for any drive with a given center distance and a speed ratio, only two non-standard asymmetric rack cutters, one for the pinion and other for the gear are used to generate a required numbers of pinion and gear with different cutter shift values for the purpose of optimization. The influence of these parameters on the maximum fillet stress has been analyzed to suggest the optimum values of these parameters that improve the fillet capacity in bending. The optimization of the asymmetric spur gear drive is carried out using an iterative procedure on the calculated maximum fillet stresses through FEM for different rack cutter shifts and finally the optimum values of rack cutter shifts are suggested for the given center distance and the speed ratio of an asymmetric gear drive. Comparisons have also been made successfully with the results of the AGMA and the ISO codes for symmetric gears to justify the results of the finite element method pertaining to this study. 相似文献
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通过设计正交试验表,利用有限元软件对正交面齿轮在均布载荷作用下的齿根弯曲应力进行分析,拟合了面齿轮齿根弯曲应力计算公式,并分析了有限元值和拟合公式计算值间的误差,验证了拟合公式的可信性.该计算方法可为面齿轮传动的齿根弯曲强度分析奠定一定的理论基础. 相似文献
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面齿轮加工后的精度评定是面齿轮研究的主要方向之一。分析了GPS系统分析过程和实施思路,将GPS理论与面齿轮齿面检测结合,建立了面齿轮齿面检测方法,完成了面齿轮齿面偏差的精度评定,为面齿轮加工精度的评定奠定了基础。 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