A cage is a mechanism that connects two axes that do not coincide with each other and that transmits the two axes at the same angular velocity. It is an important component in the transmission system of a car. Its role is to transmit the power of the engine from the transmission to the drive wheels of the car to meet the requirements of the outer corner of the drive shaft of the car. The power of the engine is transmitted smoothly and reliably to the wheels; Suspension of the end suspension. Drive the car at high speed.
There are many types of ball cages used in cars. The most widely used ones are ball cage type cages and tripod type cages. They mainly include sliding sleeves, three-way shafts, transmission shafts, star sleeves, cages and bell-shaped shells. Part composition. Due to the heavy driving torque transmitted by the ball cage, with the heavy load, high transmission precision, large demand, and safety parts, the main parts are all made of precision forging parts.
Ball cage, English name: CVJoint (ConstantVelocityJoint) ball cage, is the universal axis of the rotational speed (angular velocity) of the master axis and the slave axis. In the front-wheel drive car, the front axle is equipped with a cage drive shaft (drive and steering).
Power for front-wheel drive vehicles is transmitted directly from the powertrain consisting of the engine, transmission and final drive to the front wheels. The front wheel is not only the driving wheel but also the steering wheel. The angle of deflection during steering is very large, with a maximum of 400 or more. At this time, it is not possible to use a conventional universal transmission shaft with a small deflection angle. Because, when the deflection angle is large, the universal joint will produce large fluctuations in the rotational speed and torque. Therefore, it is necessary to use a cage with a large deflection angle and uniform angular velocity.
The principle of the cage is similar to that of the meshing of the bevel gears. Because the position of the force transmission point is always on the bisection of the angle between the two axes, constant velocity motion is guaranteed. The disadvantage of the cage is that the structure is complex, the manufacturing process is precise, and the cost is high. Therefore, the universal joint cannot be completely replaced.
The appearance of the cage has greatly promoted the development of front-wheel drive vehicles and all-wheel drive vehicles.
The front-wheel drive ball cage is divided into two types: the wheel-end fixed type and the differential-end sliding type. The latter can slide in the axial direction to compensate for the change in the axial length.
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