查询词典 bevel gearing

In this dissertation, first, based on theory of cutting tooth about the gleason spiral bevel gear, the equation of meshing in the process of cutting tooth, the surface equation of generating gear as well as the general tooth surface equation of the double circular arc spiral bevel gear, using GB12759-1991 type of double circular arc gear as a basic gear profile, a three-dimension solid model of double circular arc spiral bevel gear which has the good adaptability was carried out by used of Unigraphics software;Second, by researching of the algorithm about contact and collision as well as various contact types based upon Contacting Finite Element Method, a foundation was laid for selecting the contact type in analyzing contact stress of double circular arc spiral bevel gearing;Finally, through the connection port of PARASOLID between UG software and ANSYS/LS-DYNA software, the three-dimension solid model of double circular arc spiral bevel gearing obtained above in UG was imported into ANSYS/LS-DYNA, a finite element analyzing about contact stress of double circular arc spiral bevel gearing was carried out by applying new loading method.

本文首先基于格利森弧齿锥齿轮加工原理及切齿啮合过程中的啮合方程、产形轮齿面方程以及双圆弧弧齿锥齿轮的齿面方程，选用GB12759-1991型双圆弧齿轮基本齿廓为基准齿形，利用Unigraphics软件的建模功能，绘制了有较好适应性的双圆弧弧齿锥齿轮传动三维实体模型。其次，描述了应用有限单元法进行实体接触与碰撞问题算法的公式，研究了有限元分析中的各种接触类型以及双圆弧弧齿锥齿轮接触应力分析中所选择接触类型的依据。最后，通过UG软件和ANSYS/LS-DYNA之间的PARASOLID接口工具包，将UG软件中得到的啮合齿轮模型导入ANSYS/LS-DYNA有限元分析软件，给出一种新的加载方法，进行了双圆弧弧齿锥齿轮传动的接触应力的有限元分析。

The tongs all passes in the machine the gearing on the bed what tongs the gearing on realizes with superficial contact in the cowgirl on the bed in machine or matches.when the tongs installs in the machine bed work on the stage,the center of gravity of the tongs should be as far as possible low,center of gravity the more high an accepts should the dint is more big,the tongs bottom four directions should bulge,make its contact good,or the bottom establishes four a feets.when the tongs installs on the machine bed principal axis,the tongs install the to should have the enough match accuracy with principal axis cowgirl surface,and guarantee the gearing the stability dependable.

夹具体在机床上的安装都是通过夹具体上的安装基面与机床上的相应表面的接触或配合实现的。当物流设备需要的公司体在机床工作台上安装时，夹具的服装厂应尽量低，重心越高则支承面应力越大，夹具底面四边应凸出，使其接触良好，或底部设置四个支脚。当夹具体在机床主轴上安装时，夹具安装基面与主轴相应表面应有足够的配合精度，并保证安装稳定可靠。

They are divided into two main classes: one class with handwheels but no gearing, and the other class with cranking actuators and worm gearing or worm and spur gearing combined.

这些地轴架分为两大类：一类配置手轮，没有齿轮执行机构；另一类配置转动曲轴执行机构和蜗轮或蜗轮和凸轮组合执行机构。

It was proved by theories and experiments that the load capacity of double circular arc spiral bevel gearing is higher than involute gearing's.

实践证明，双圆弧弧齿锥齿轮传动具有比渐开线齿轮传动高得多的承载能力。

The double circular arc spiral bevel gearing is a type of points contact transmission by concave-convex tooth profile between meshing gearing, it has the advantages of large comprehension radius of curvature, good lubricating ability etc..

双圆弧弧齿锥齿轮传动是一种凸凹齿廓相接触的点啮合传动，有较大的综合曲率半径，因此有很高的接触强度；且润滑效果良好。

The equation and the mathematical model are acquired just after studying of the theory of gearing, and the mathematical model also result from the actual manufacturing method. Then, the paper accomplish the accurately 3D-modeling of the four generally used types of gears: cylindrical spur gean cylindrical helical gean straight bevel gear and curved-tooth bevel gear.

利用具有强大三维造型功能的工程软件实现了四种常见齿轮：圆柱直齿轮、圆柱斜齿轮、直齿锥齿轮和弧齿锥齿轮的三维造型，解决了齿轮的精确三维建模难题。

It was indicated by theories and experiments that as a new type spiral bevel gear transmission, double circular arc spiral bevel gearing has the advantage of higher load capacity, longer service live, smaller volume, lighter weight and higher transmitting efficiency etc. Therefore, more and more attention has been paid to its application and research in recent years.

理论和实验研究表明，作为一种新型弧齿锥齿轮传动方式，双圆弧弧齿锥齿轮传动具有承载能力高、使用寿命长、体积小、重量轻、传动效率高等特点，所以对它的应用和研究日益受到人们的重视。

Air wrench operation speeds up cycle time on high gear ratio bevel gears however, the mechanical advantage available from bevel gearing enables the operator to damage the valve.

气动扳手操作加快了高齿轮传动比伞齿轮装置的循环速度，但是，其伞齿轮的机械增益使得操作者可能对阀门造成破坏。

To start off, we're going to look at the butt end of the racket handle. The handle has eight sides, also called "bevels," and the topmost bevel is Bevel 1. Bevels 2, 3, 4 etc. follow going clockwise around the handle. Bevel 5 is located on the "bottom" of the handle.

首先我们观察拍柄的平头端，拍柄有八面，也就是八个斜面，最上面的标记为1，然后顺时针方向是2，3，4等等，底5面试拍柄的最下面的一个面。

Analyse the tooth geometry of Klingelnberg Cyclo-Palloid spiral bevel gear.,according to the relative position and kinematic relation of the cutter heads,virtual crown gear and the processed wheel blank,established the system of coordinates of the gear cutting, dedcuced the tooth face equation of the virtual crown gear, according to relations of the gear cutting and space theory of engagement, deduced the tooth face equation of klingelnberg Cyclo-Palloid spiral bevel gear, and drawing the three-dimensional graphs of the virutal crown gear and Klingelnberg Cyclo-Palloid spiral bevel gear according to the design and setting parameters.

根据铣齿加工中刀盘、摇台和轮坯的相对位置和相对运动关系建立了切齿啮合坐标系，由矢量的旋转推导了产形轮齿面方程；根据空间啮合原理和切齿啮合关系推导了被加工齿轮的齿面方程；由设计参数和铣齿调整参数计算得到齿面离散数据，绘制了产形轮和摆线齿锥齿轮的三维齿形。

In the days of sailing vessels the crew were afraid they would be becalmed on the ocean.

在使用帆船的时代，船员们担心他们会因为无风而无法在海洋上航行。

As long as foreign donors pay the PA's salary bill, few expect a new intifada.

只要外国继续为巴权力机构的薪水买单，希望发动新暴动的人便寥寥无几。