齿轮

Based on the analysis of calculation theories on magnetic field and torque of permanent magnetic gears, the characteristic curve of torque-angle are calculated with the use of Ansoft electromagnetic calculation software.

本文在分析永磁齿轮磁场和转矩计算理论的基础上，利用Ansoft 电磁计算软件计算了平行轴永磁齿轮的矩角特性曲线，并研究了恒定负载下永磁齿轮的转速波动情况。

Based on the fuzzy mathematics theory, the math model of the fuzzy optimal design for the gear reducer is set up and a computer optimal interface that gear optimal design plan is developed.

基于Pro/E的支撑平台，以Pro/TOOLKIT和MFC类库作为核心技术，提出了基于模糊优化设计理论的计算机辅助齿轮设计方案，结合模糊数学的基本原理，建立了齿轮传动模糊优化设计的数学模型，开发出一套计算机辅助齿轮优化设计的系统软件，分别给出了普通优化设计和模糊优化设计的计算结果，体现了模糊优化设计的优越性。

It has been revealed that gear's modification can improve its performance patently.

有大量研究表明，齿轮修形能有效改善齿轮使用性能，提高齿轮使用寿命。

These gears are manufactured with widths of their teeth (as measured along the pitch circle) such that when two such gears are installed with a center distance consistent with their standard pitch diameters, the teeth of the two gears will mesh "well".

生产齿轮的时候要根据齿的宽度，这样当两个齿轮装配成中心距离与分度圆直径相吻合的时候，两个齿轮的齿就可以正确啮合。

This method could not only applied to outer noncircular gear with all convex pitch line but also applied to outer noncircular gear with partial concave pitch line and inner noncircular gear.

这种磨削原理不仅可以应用于节曲线外凸的非圆齿轮，而且可以应用于磨削带内凹节曲线的外非圆齿轮及内非圆齿轮。

Thus, to study tooth surface curvature is significant. However, from the published information, the curvature of face gear drives hasn′t been well studied until now. Based on the knowledge of differential geometry, a method for calculating principal curvature and principal directions for face gears is established, and thus the principal v...

文中利用微分几何原理推导了面齿轮传动的齿面主曲率与主方向，由此得出面齿轮传动中诱导法曲率的两个主值；开发了相应的程序；进行了实例计算；分析了传动中的主要参数对曲率的影响，所获得的结论对面齿轮传动的强度计算与分析具有参考价值

Modern lathes have a quick-change gear box. The input end of this gear box ix driven from the lathe spindle by means of suitable gearing.

现代车床有一个变速齿轮箱，齿轮箱的输入端由车床主轴通过合适的齿轮传动来驱动。

Since the reform and open policy has been adopted in China, the Factory gives full play to the advantages of the advanced aviation industry technology, high level talents and advanced equipment to vigorously develop the civilian industry products. It has developed successfully six series products, i.e. the gearbox of the construction vehicles, marine gearbox, automobile gear, the precision gears in the mine machinery, textile machinery, steel wire rolling machine, tobacco machine, railway locomotives etc. and the special reductor.

改革开放以来，工厂又充分发挥航空工业技术尖端、人才密集、设备先进的优势，大力开发民用产品，先后成功地开发了工程车辆变速箱、船用齿轮箱、汽车齿轮以及矿山、纺织、线材轧钢机械、烟草机械、铁路机车等行业的精密齿轮及特种减速器六大类产品。

It is applicable to any type of pitch pairs and relatively easy to realize the desired geometrical and mechanical properties in the design. By this method, the gear drives have small sliding coefficients and contact stress. Therefore, the gear wear is effectively reduced.

使用此方法可以容易地在设计中加进所需要的齿轮几何和机械特性，使所设计的齿轮具有较小的滑动系数和接触应力，从而有效地减小齿轮的磨损。

The undercutting analysis probe the position of undercutting line and the spherical angle of spherical gears. Teeth contact analysis probe the kinematic error and the position of contact point of spherical gears with misalignment and ideal case. Another contact pattern analysis probe the positions and size of contact pattern ofspherical gears.

齿面过切分析主要探讨球形齿轮之齿面过切位置及过切发生的球形角，接触分析则讨论球形齿轮分别在具有装配误差及理想状况时之运动误差及接触点位置，另外，齿印分析探讨球形齿轮在受力变形后其接触椭圆之位置及大小。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。