共查询到20条相似文献,搜索用时 578 毫秒
1.
一、双导程尼曼(Niemann)蜗轮副简介某些要求准确传递运功的蜗轮副需要的侧隙极小,由于蜗轮副的制造误差和蜗轮磨损所形成的过大的侧隙影响传动精度,不能满足技术要求,住往需要采用双导程蜗杆传动可使侧隙得到调整。双导程圆柱蜗杆传动与普通圆柱蜗杆传动的区别在于蜗杆左、右齿面具有不等的导程,而同则导程则相等。因而,这种蜗杆的轴向齿厚沿其轴线从一端至另一端按比例增大或减小,而与其齿合的蜗轮所有齿 相似文献
2.
3.
我厂奥氏真空过滤机减速蜗杆传动装置的蜗轮使用寿命有的只有2~3个月;有的因适当调整入口有一定侧隙,则寿命可相对地延长一些;另外,有几台自1954年运转至今 相似文献
4.
刘法权 《仪表技术与传感器》1983,(5)
在仪器制造中,蜗杆传动应用较多,为保证蜗杆传动的精度和啮合侧隙,在加工蜗轮时,对其加工中心距应严格加以控制。蜗轮加工中心距的偏差可用以下方法进行检验:1.在齿轮双面啮合综合检查仪上用标准蜗杆测量其度量中心距;2.用一对标准蜗杆相对的放入蜗轮齿槽,测量其M值,3.用一对尺寸相同的钢球相对的放入蜗轮齿槽,测量其M值等。用一对钢球测量的M值就是所谓的量球 相似文献
5.
通过对传动装置支承结构及其受力情况进行分析,找出蜗轮蜗杆传动装置支承结构在使用过程存在的问题;并针对问题,对蜗轮蜗杆传动装置支撑结构进行优化设计分析。对蜗轮蜗杆传动装置支撑结构进行优化设计,可提高蜗轮蜗杆传动装置的工作效率,提高传动装置支撑结构的安全性。 相似文献
6.
7.
8.
9.
针对专用设备头架传动机构上的蜗轮磨损过快问题,用蜗轮齿面的接触疲劳强度计算对蜗轮的磨损进行研究,提出了解决措施:用直廓环面蜗杆传动替代阿基米德蜗杆传动,实践表明此法简单可行,是解决蜗轮磨损问题的良好方法。 相似文献
10.
11.
12.
13.
14.
仔细分析了某型摩托车里程表主动齿轮(形式上相当于一个渐开线圆柱蜗杆)的轴向齿形。结果发现,对一些螺旋角很大的渐开线圆柱蜗杆,完全可以将其轴向齿廓看成直线段,并按阿基米德蜗杆来加工,这样可以大大降低加工难度,而且几乎不会对其齿形精度产生影响。 相似文献
15.
《Measurement》2016
The measurement of planar double-enveloping hourglass worms has always been a technical problem in the field of gear metrology. To solve this problem, we propose a new method and develop a measuring machine to inspect each deviation of the worms. In a cylindrical-coordinate system, the measuring principle adopts electronic generative metrology. The mathematical model of the worms is established according to the forming process of the worms. Based on the definitions of error items to be measured, the model of each deviation will be determined. The model could be transformed to the control path that leads the probe by controlling the movements of X axis, Y axis and Θ axis. In this process, probe radius compensation is necessary to correct the control path. At last, the helix deviations, the tooth profile deviations and the topologic deviations of a worm are inspected. It is the first time that the topologic deviation of this kind of worm is measured. The analysis shows that the deviations of the worm could be a reference to adjust the processing of the worms. The measuring machine could inspect the hourglass hobs, the cylindrical worms and the hobs as well. 相似文献
16.
为更真实地反映谐波齿轮的侧隙分布,改进侧隙算法中柔轮齿根的定位方式,建立坐标变换下的齿廓方程以代替原有侧隙算法中的齿厚方程,提出基于周向位移定位和弧长定位的侧隙计算方法,建立含渐开线齿廓的平面齿圈实体有限元模型,获得空载啮合状态下侧隙分布。将理论计算的侧隙值与有限元模型计算的侧隙值比较发现,两者所得结果一致性较高。同时为了揭示侧隙偏差的来源,获取了有限元模型柔轮中性层的径向位移、周向位移和法线转角,并求解了周向位置极角。与理论算法结果比较发现,柔轮齿根周向位移偏差是引起侧隙偏差的主要因素。 相似文献
17.
间隙对含摩擦和时变刚度的齿轮系统动力学响应的影响 总被引:21,自引:3,他引:18
主要研究在考虑摩擦和时变刚度时,轮齿间隙对齿轮系统动力学响应的影响。建立常间隙、时变间隙和随机间隙三种不同的间隙形式。利用数值仿真的方法得到系统的幅频响应曲线和时间历程曲线。分析发现:①在低速时,随着摩擦因数的增大,系统响应的方均值和平均分量增大;并经过三次跳跃之后系统进入混沌运动状态;②时变间隙幅值增大导致系统提前进入混沌状态,而且随着时变幅值的增大跳转频率逐渐减小;时变间隙频率较小时,间隙对系统的影响较小;当时变间隙的频率较大时,系统在 =0.2,0.3时出现明显的共振响应,系统的响应以高频率分量4、5和6为主;③考虑随机间隙时,随着 的增大,齿轮系统响应的平均分量波动比较大。 相似文献
18.
19.
Chan Il Park 《Journal of Mechanical Science and Technology》2020,34(2):565-572
Gear backlash is a nonlinear effect of the gear system. In a spur gear system with the backlash, the initial position of gears with the backlash affects the impact force. This work conducted a dynamic analysis of the spur gear system with time-varying mesh stiffness and bearing stiffness with a focus on the initial gear position within the backlash. For this purpose, the time-varying stiffness of the gears and rolling bearings were calculated. Mesh force with the time-varying stiffness and the gear backlash was applied to four DOF equations of motion. The equations of motion were solved using the Newmark beta method and Newton-Raphson method. The dynamic characteristics of the spur gear system by the initial position of gears within the backlash were investigated along with the magnitude of the backlash. The results showed that as the backlash increased, the mesh and bearing forces increased as well. The mesh and bearing forces were highly dependent on the initial gear position within the backlash. Significant initial mesh and bearing forces by the initial gear position within the backlash can lead to cumulative damages to the gear system. 相似文献
20.
ZK蜗杆过渡曲线的研究 总被引:1,自引:0,他引:1
建立了ZK蜗杆的数学模型 ,分析了加工ZK蜗杆时过渡曲线起始点随刀具半径的变化规律 ,首次提出了“最大刀具半径”的概念 ,给出了在不同蜗杆参数下“最大刀具半径”的数值。 相似文献