Universal joints are classified by angular rate
发布时间：2017.05.13 新闻来源：邢台远拓汽车零部件制造有限公司
Rigid joints can be divided into constant velocity joint (e.g. cardan joint), quasi constant velocity joint (such as double cardan joint, three pin type universal joint) and CVJ (such as rzeppaconstantvelocity joint, Weiss universal joint). Constant velocity and unequal velocity are the same as the angular velocity of the two shafts when the driven shaft rotates with the driving shaft. Of course, the average speed of the driving shaft and the driven shaft are equal.
1. constant velocity universal joint:
When the angular velocity of the main shaft and the driven shaft is equal to the angle between two shafts, the universal joint is called a constant velocity universal joint or a constant velocity universal joint. They are mainly used in wheel drive devices such as steering drive axles and off drive bridges, which are mainly used for power transmission in cars.
2. non constant velocity universal joint:
When the angular velocity of the main and driven shafts varies between the two axes, the unequal joint is called the unequal velocity universal joint, also called the cross shaft universal joint.
The cross shaft rigid Cardan drive shaft is the most widely used and the oldest in the automotive transmission system. When the car was rear wheel drive, often using a cross shaft universal joint drive shaft, on the part of luxury cars, but also the use of isokinetic ball head; when the car is front wheel drive, often using constant velocity universal joint is a kind of constant velocity universal joint drive shaft, just different names. Usually referred to as the transmission shaft generally refers to the cross shaft type rigid universal joint drive shaft. The cross axis rigid joints is mainly used for the change of transmission angle, generally by the flange fork, cross shaft with roller bearing assembly, universal joint fork or sliding fork, middle fork connection or spline shaft, needle bearing axial fixation etc..
Flange fork is a flanged fork parts, generally use the forged pieces of carbon steel or alloy steel, with precision casting and carbon steel or carbon alloy steel made of ductile cast iron sand casting. The flange fork generally has a flat flange, and also has an end face trapezoidal tooth flange. The cross roller needle roller assembly generally consists of four needle roller bearings, a cross shaft and a grease nipple. Needle roller bearings are generally composed of a number of needle roller, a bearing bowl, a multi blade rubber seal (with some skeleton) composition. In some needle roller bearings, there is also a circular gasket with oil grooves. It is made of nylon and copper or other materials. It is mainly used to reduce the axial gap of the universal joint and improve the dynamic balance quality of the drive shaft. Universal joint fork is a fork shaped parts, generally use the forged pieces of carbon steel or alloy steel, also has the precision casting of medium carbon steel. The axial fixing parts of needle roller bearings are generally bore (or shaft) with elastic retaining ring (inside and outside cassette), or bearing plate, lock piece, bolt and so on.
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