万向节

In this thesis, with the aid of the method of reconstructive direction cosine matrices of the analysis and synthesis of spatial mechanism, the more overall and systematic theoretical research is done about trident-bar universal joint and drawn some useful conclusions about kinematics analysis, dynamics analysis, kinematical precision analysis, vibration analysis, simulation and experimental results analysis, mechanism type selection analysis based method of fuzzy distinguishable pattern, integrated designing prototype system.

本文以改造的方向余弦矩阵为数学工具，以三叉式万向节为研究对象。进行了机构有关的解析求解、仿真和试验结果分析，基于模式识别技术的机构选型及机构的集成设计原型系统，得出了以下结论：(1)采用改造的方向余弦方法适用于空间机构的运动求解及动力求解。它的特点是解析明了，以矩阵方式体现，适合计算机求解。并以万向节为实例进行了万向节的详细的运动分析，建立了求解的各个变换矩阵，得出了机构的详细的运动关系。

This thesis is combined with the project－"design and exploitation of Automotive Constant Drive-Shaft", which is undertaken by the topic team. Based on the structural simplification to three-dimension solid models of ball-cage type and three column-shaft type constant velocity joint, and the three-dimension solid models are obtained by conversion engineering. Altair/Hpermesh software is used here for generating the finite element mesh of key parts of ball-cage type and three column-shaft type constant velocity joint.

本文结合课题组承担的"汽车等速驱动轴设计开发"项目，在对通过逆向工程方法获得的等速驱动轴的球笼式等速万向节和三枢轴式等速万向节三维实体模型进行结构简化的基础上，利用Altair/Hypermesh软件对球笼式和三枢轴式等速万向节的各关键零件进行了有限元网格划分。

Hangzhou Xiaoshan Wanchuan Automobile Fittings Co., LTD is specialized producing automobile, heavy, minisize, ongineering, facility, gimbal, automobile differential gear spider, three-prong gimbal, gimbal rowlock, saloon car nave axletree automobile apart axletree, axletree roller pin, axletree roller and etc.

杭州萧山万传汽车配件有限公司是一家专业生产汽车、重型、微型、工程、设备，农机万向节总成，汽车差速器十字轴，三叉万向节，万向节活动叉，轿车轮毂轴承，汽车分离轴承，轴承滚针，轴承滚柱等汽配。

In the trunnion bearing of a Hooke's universal joint, the crown drop on the needle roller determines the contact pressure distribution between the needle and the raceway, and is one of the most important factors to affect the capability and life of the joint.

虎克万向节十字轴节叉轴承的滚针凸度决定了滚针与滚道间接触压力的分布状况，是影响万向节性能和寿命的主要因素之一。

"A variety of universal joints have been used on auto-mobiles, But the types now in most common use are the spider and two-yoke, the constant-velocity, and the Ball-and-trunnion joints."

汽车上使用的万向节有多种形式，但是使用最普遍的是双叉十字轴万向节、等速万向节和球叉式万向节。

Ningbouniversal joints are universal joints specializing in the production of automobiles, engineering machinery universal joint, cross axle differential enterprises, located in Yuyao City, Zhejiang Province Economic Development Zone, adjacent to Hangzhou-Ningbo Expressway and strategic location, the transportation is convenient.

宁波正虹万向节有限公司是专业生产汽车万向节、工程机械万向节、差速器十字轴的企业，坐落于浙江省余姚市经济开发区，毗邻杭甬高速公路，地理位置优越，交通便捷。

"The four arms of the spider, known as trunnions, are assembled into bearings in the ends of the two shaft yokes."

万向节十字轴的四个轴颈叫做万向节十字头，分别装在两个万向节叉顶端的轴承中。

"The four arms of the spider, known as trunnions, are assemble d into bearings in the ends of the two shaft yokes."

万向节十字轴的四个轴颈叫做万向节十字头，分别装在两个万向节叉顶端的轴承中。

"When the two shafts are at an angle to each other, the bearings in the yokes permit the yokes to swing around on the trunnions with each revolution ."

当两轴相互处在同一角度上，主动轴转动时万向节叉上的轴承使万向节叉绕万向节十字轴摆动。

"When the two shafts are at an angle to each other, the bearings in the yoke s permit the yoke s to swing around on the trunnions with each revolution."

当两轴相互处在同一角度上，主动轴转动时万向节叉上的轴承使万向节叉绕万向节十字轴摆动。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。