外文翻译=等速万向节总成=2000字符

中国地质大学长城学院 本科 毕业 设计 外文资料翻译 系 别 ： 工程技术系 专 业： 机械设计制造及其自动化 姓 名： 张江飞 学 号： 05211508 2015 年 1 月 23 日 外文资料翻译译文 等速万向节总成是轿车动力系中的一个组件。一辆四驱车共由 6 根等速万向节总成组成 ,其中 2 根为前驱半轴总成 , 2 根为后驱半轴总成。它们连接在车轮与差速器上 , 把 差速器的转矩传递给车轮 , 故称为驱动轴 ; 由于车轮分左、 右两个轮 , 因此需成对安装 , 又称为驱动半轴总成 , 其特点是传递转矩大而转速低 ; 另外 2 根传递发动机转矩 , 其特点是传递转矩小而转速高 , 称之为传动轴 , 前传动轴连接在分动器和前差速器上 , 后传动轴连接在分动器和后差速器上。从使用性能上把等速万向节总成分成驱动半轴总成和传动轴总成两大类 , 下面分析每种类型的特点 。 钟形壳是等速万向节中的重要零件，其内腔弧形滚道形状复杂，成形困难。采用 冷锻与冷 精整联合挤压相结合的方法，实现了锻件 的成形。通过有限元模拟，分析 了 的流动情况，对成形工艺方案进行了改进，同时考虑钟形壳 的冷却收缩，将收缩量由 0 75改为 0 4。工艺试验后获得了较为理想的锻件，证明改进后的工艺使产品质量和精度都得到了显著的提高。 向节传动发展过程中，由在呈交角的两轴承 之间借助于 2 个圆锥齿轮来传递运动，发展成利 用钢球和球形窝来代替轮齿传动，即：在固定角度下的一对锥齿轮发展 变交角 p 的球式万向节。然而，为了使球式万向节具有铰接性能 (夹角可变的能力 )，球心窝必须扩展成弧形滚道，分别在钟形外壳和球形内上形成钟形外壳弧形滚道的制造过程 中，为了减小后工序的 磨 削量，设计锻件时，增大 42。角，俗称为圆弧与钢球的接触角，从 42。增大为 52 5。，同时测量钢球的球心距也相应增大。接触角增大后，锻件尺寸更接近产品尺寸。取消了一道粗磨削，部分磨削余量由 突 模挤压成形，塑性成形替代了部分机加工量，减少工序同时，机械性能也得到一定程度的提高。 外文原文 Patterned constant speed universal joint assembly is a group of cars powertrains. A raider buggies altogether is composed of six root patterned constant speed universal joint assembly,Precursors including 2 half shaft assembly, after 2 root for drive axle shaft assembly.They are connected to the wheel and the differential, the torque transfer differential.Hand wheel, so called the drive shaft; Due to the left and right wheels points twoWheel, so need to install in pairs, also known as the drive axle shaft assembly, its characteristic.Point is big transmission torque and rotational speed is low; In addition the root pass 2 engine.Torque, its characteristic is small and high speed transmission torque, called transmission.The front drive shaft, connected before the transfer case and differential, after transmission.Shaft connected to the transfer and the rear differential. From the using performance.Patterned constant speed universal joint assembly is divided into driving axle shaft total. Spherical housing is an important part in patterned constant speed universal joint, which arc raceway cavity shape is complex, forming difficulties.Warm forging and cold sizing combined extrusion method of combining the, implements the forging forming. Through finite element simulation, the paper analyzes the reverse flow situation of extrusion forming, the forming technology plan is improved, at the same time considering the cooling shrinkage temperature after forging forgings, will shrink by 0.75% to 0.4%. Ideal forging was attained after experiments and prove that the improved technology make the product quality and accuracy have been improved significantly. Cardan drive development, submitted by the Angle between two axes by using two bevel gears to transmit motion and development into the use of steel ball and spherical socket to replace gear drive, i.e., under the fixed Angle of the development of a pair of bevel gear into the change of p ball type universal joint. However, in order to make the ball type universal joint has articulated performance (variable Angle), ball heart must extend into arc raceway, respectively in the bell is formed on the shell and spherical in the hub shell arc raceway manufacturing process, after in order to reduce the amount of the cutting process, design of forging, 42. Angle, commonly known as for circular arc and the contact Angle o