The product output to sprain torque , which make gears the least load and ( with the equal center distance ) can inproue more 30 % bearing capacity than the traditional load capacity 本产品为输出升扭，使各档轮所受载荷减小，相同中心距较传统结构提高承载能力30以上。
The article introduces the calculation equation of how the gauge sets up and calculates the roller center distance which is of guiding signification to cotton mills and cradle manufacturers 文章介绍了摇架上罗拉隔距规设定隔距的计算公式的推导过程，对棉纺厂、摇架制造厂具有指导意义。
Main products : standard series of plane enveloping toroidal worm tp worm for short reducers and worm gear sets . center distance is a loo - 500mm 标准系列平面包络环面蜗杆减速器及其蜗杆副：中心距a 100 - 500mm ，传动比10 - 63按用户要求设计制造非标平面包络环面蜗杆减速器及其蜗杆副：中心距： a
As the method of center distance varing was adopted and the technologe was differ from the condition of center distance constant , the gear concordance of abrasion rate on the tooth face of gears was improved obviously especially in the big gear 由于采用了变更中心距的方法以及与定中心距的工艺不同，齿面研磨率的一致性得到明显的改善，特别是大齿轮上更是如此。
Analytic relationships among radial clearance , axial clearance , contact angle , center distance between two grooves , and bearing fit gap are derived for bearing design ; 3 . analytic relations of radial fit gap and radial clearance is derived for bearing production 推导出了双列角接触球轴承的轴向游隙与径向游隙、双沟沟心距及轴承配套间隙之间的解析关系式，可应用于轴承设计。
In this paper , based on the theory of ehl ( elasto - hydrodynamic lubrication ) , a study is conducted to investigate the impacts of geared factors ( including gear speed ratio , gear teeth modulus and center distance ) on the lubrication behavior of gearing , and some useful conclusions are obtained 应用弹性流体动力润滑理论，计算分析了传动比、模数及中心距等齿轮参数对齿轮副润滑性能的影响，得出了一些有益的结论。
After considering the coupling of the mounting errors and elastic deformation , the meshing influences of the error of the center distance , the setting parametric error in the axial direction , and the intersect angle between the two axes on transmission performance are investigated . 4 考虑到安装误差和载荷作用下的弹性变形等非共轭因素耦合作用，分析了渐开线蜗杆传动在安装时存在中心距误差，轴间相对位置误差，轴间相对夹角误差对其承载啮合的影响； 4
Those sensitive parameters making system have negative damping and occur self - excited shimmy are horizontal pulling lever rigidity , tire sideslip rigidity , steering gear rigidity and damping , kingpin equivalent damping , kingpin caster angle , tire drag . and wheel center distance , tire side rigidity , vehicle wheel unbalanced mass , tire vertical rigidity , and distance from kingpin center to the vertical central line plane of tire have great influence on shimmy , but they do n ' t make the system have negative damping . and horizontal pulling lever damping , suspension damping and rigidity have very small influence on shimmy 横拉杆刚度、轮胎的侧偏刚度、转向机刚度、转向机阻尼、绕主销当量阻尼、主销后倾角、轮胎拖距是影响摆振的敏感性参数，适当调节某一参数可引起系统的负阻尼，使系统产生自激摆振；轮距、轮胎侧向刚度、车轮上的不平衡质量、轮胎垂向刚度及主销延长线与地面交点至车轮平面的距离对摆振的影响也较大，但不会使系统出现负阻尼；而横拉杆阻尼、悬架阻尼与悬架刚度对摆振的影响很小。
Then all manufactories of spinning frames and cotton mills try to shorten the gauge between front and middle rollers and make the center distance reduce to 42 - 43mm , but the distances are still so longer , thin and thick slubs when spinning purified cotton are distinctly more than that nitto model drafting , which have been hindering the cotton mills to improve the quality of cotton spinning all along 因此各细纱机制造厂和棉纺厂都在想方设法把前、中罗拉隔距缩小，中心距缩小至42 43毫米，但还是偏大，纺纯棉时细节、粗节明显比原先的日东式牵伸多，一直困扰着棉纺厂提高棉纺质量。
By means of the optimization method - punishing function method and taking the sum of the planet gear radius and center distance as the target function , the parameters of drive are optimized . by using the optimization program , the initial serial studies of drive are completed , the best serial parameter value of the drive is given 采用外点罚函数优化方法，通过取行星轮半径和中心距之和作为优化目标函数，对滚锥齿超环面行星蜗杆传动进行了参数优化，运用此优化程序，初步完成了对该种传动的系列化研究，给出了传动系列的最佳参数取值。
