共查询到17条相似文献,搜索用时 136 毫秒
1.
分析了渐开线齿轮基圆位置的变化规律 ,以此确定渐开线理论起始点的位置 ;分析了渐开线齿轮的加工过程 ,以此确定渐开线实际起始点的位置 ;最后分析了齿轮实际啮合过程 ,说明只要齿廓工作段起始点位于渐开线实际起始点之外 ,便不会出现传动的干涉。 相似文献
2.
3.
基于UG的齿轮三维精确建模与运动仿真 总被引:2,自引:0,他引:2
齿轮传动作为一种通用的传动机构,具有其特殊的设计和制造方法。设计和制造的关键在于齿廓线的形成。利用当今世界先进的三维造型软件UG可以对齿轮进行精确三维造型并实现啮合运动仿真。以渐开线齿轮为例绘制出其精确的渐开线齿廓,实现三维造型,从而可以进行运动仿真,为齿轮有限元动力学分析提供精确的模型,减少设计开发的成本,使其具有快速响应市场的能力。 相似文献
4.
5.
6.
朱效波 《江苏广播电视大学学报》1995,(4)
在渐开线齿轮啮合传动中,由渐开线性质可知:齿廓上各点的曲率半径是变化的,齿廓各点所受的载荷也不一样。对于重合度ε≤2的标准直齿轮传动,在节点C处是一对轮齿啃合,在齿顶与齿根相接触时不两对齿哨合。因此用赫兹公式的一般表达式计算时,就应该同时考虑啮合点所受载荷与该点的当量曲率半径的大小有关。如图1所示,在单齿对啮合时,由各啮合点的受力分析和计算各点的当量曲率半径后可知,小齿轮1的齿根与齿轮2的齿顶在B点接触时,该处的接触应力最大。这不仅是因为B点是一对齿受力,而且该点的当量曲率半径Pr。。是一对齿啮合区内… 相似文献
7.
渐开线斜齿轮具有非常复杂的齿廓,应用三维建模软件UG基于斜齿轮渐开线齿面的生成原理进行三维实体建模,用户只要输入新的设计参数即可实现齿轮实体模型重建。采用有限元分析软件ANSYS以及ANSYS/LS-DYNA对斜齿轮的接触性能进行有限元分析,全面反映斜齿轮传动过程中的动态特性。 相似文献
8.
9.
涂杰 《武汉职业技术学院学报》2013,12(1):97-99
为了减小齿轮的齿根弯曲应力,提高齿轮的传动能力,本文根据非对称渐开线齿轮研究学者提出的齿廓方程构建思路进行了建模,并用NISAⅡ进行了齿轮应力变化的有限元分析。通过分析比较得出使用非对称渐开线齿轮可以提高齿轮的弯曲强度从而提高齿轮的传动能力。 相似文献
10.
11.
基于Pro/E的齿轮类零件三维建模 总被引:1,自引:1,他引:1
根据齿轮渐开线齿廓的形成原理,利用Pro/E强大的参数化设计功能,通过方程建立精确的渐开线齿轮齿廓,能够简化设计过程,减少重复工作,提高齿轮类零件的设计计算效率,方便快捷地实现直齿轮、斜齿轮、圆锥齿轮、蜗轮和蜗杆等各类齿轮的三雏造型设计。 相似文献
12.
We focused on the mathematical modeling and characteristics analysis for the nutation drive based on error parameters. The crown gear tooth profile equation was introduced according to the national standard double circular arc tooth profile and based on the equal tooth strength principle. The nutation drive meshing coordinate system was set up by introducing the cone vertex error, tilt error, nutation angle error and spiral angle error. The tooth profile equations of the double circular arc external and internal spiral bevel gears were further obtained based on the crown gear tooth profile equation concerning above mentioned error parameters. The influences of the nutation gear reducer tooth contact conditions were analyzed with the gear tilt error and axial misalignment error. Finally, the correctness of the theoretical analysis was verified by the contact spot test. 相似文献
13.
Based on the theory of gearing and the gear generating mechanism, this study investigates the contact characteristics of conical involute gear pairs with crossed axes. The meshing model with a reference rack as intermedium is established and tooth contact analysis (TCA) is performed to examine the meshing and bearing contact of the conical involute gear pairs composed of a pinion and a gear. Using the contact line of reference rack tooth surface, the path of contact is confirmed, and the calculation formula of principal direction, relative curvature, path of contact and ellipse of contact are derived. Finally, numerical examples are provided to demonstrate computational results and test gears are made for tooth-bearing tests. The conclusion verifies that the theory is applicable. 相似文献
14.
针对教学过程中渐开线齿廓的形成过程难教难学的问题,设计制造了齿轮范成加工教具。该教具采用滚齿加工蜡制齿轮,可实现渐开线直齿圆柱齿轮和变位齿轮的加工,可用于范成法加工齿轮的演示教学和学生实验。 相似文献
15.
16.
Monte Carlo method was adopted to calculate the meshing error considering the manufacture error and assembly error of the meshing point along the time-varying contact line for helical gear pair. The flexural-torsion-axis dynamic model coupled was established under the tooth friction force and solved by the perturbation method to compute real dynamic tooth load. The change laws of the friction force and friction torque were obtained in a meshing period. The transmission error formulation was analyzed to introduce meshing excitations. The maximum dynamic transmission error, the maximum meshing force and the maximum dynamic factor were calculated under different speeds, external loads and damping factors. The conclusions can provide theoretical basis for the gear design especially in tooth profile correction. 相似文献
17.
基于齿轮形金钢面修磨轮 ,TI蜗杆才能被精修磨 ,由此形成一种 TI蜗杆与渐开线斜齿轮的啮合传动型式 .本文对于这种新型传动副 ,建立了数学模型 ,推导出了若干基本方程式 ,并且进行了齿面接触分析 .理论分析表明这种蜗杆传动具有许多优点 . 相似文献