Automobile Transmission Steering Gear Shaft Forgings

The steering gear shaft of the automobile transmission is a part produced by forging process. Its function is to transmit the power of the engine to the wheels together with the gearbox and drive axle, so that the car can generate driving force. The gearbox changes according to the road conditions and driving conditions. , change the driving speed of the car, provide the appropriate driving force for the car, and at the same time cut off or transmit the engine power as needed, so that the engine can effectively output power or idle.

The role of the transmission intermediate shaft is to transmit the power of the engine to the wheels together with the gearbox and drive axle, so that the car can generate driving force. The transmission shaft is composed of a shaft tube, a telescopic sleeve and a universal joint. The transmission shaft is connected or Assembling various accessories, it is a movable or rotating circular object accessory, made of light alloy steel pipe with good torsion resistance.

Cross-sectional view of transmission assembly Double countershaft transmission Numbering rules Double countershaft series transmission Power transmission route The main and auxiliary transmissions of Faster double countershaft transmissions use two countershafts with exactly the same structure, 180° apart. After the power is input from the input shaft, it is divided into two intermediate shafts, and then converged to the main shaft input, and the same is true for the auxiliary transmission.

In theory, each intermediate shaft only bears 1/2 of the torque, so the use of double intermediate shafts can reduce the center distance of the transmission, reduce the thickness of the gears, shorten the axial dimension, and reduce the weight. After adopting the double countershaft structure, each gear on the main shaft must mesh with two countershaft gears at the same time.

In order to satisfy the correct meshing and distribute the load as evenly as possible, the main shaft gear is radially floating on the main shaft, and the main shaft adopts a hinged floating structure. The main shaft journal is inserted into the hole of the input shaft, and the oil-containing guide sleeve is pressed into the hole. , There is sufficient radial clearance between the spindle journal and the guide sleeve. The rear end of the main shaft is inserted into the driving gear hole of the auxiliary transmission through an involute spline, and the driving gear journal of the auxiliary transmission is supported on the ball bearing.

In the fine-toothed transmission, there are two grooves in the journal of the drive gear of the auxiliary case, and O-rings are installed in the grooves, which form elastic supports with the bearings.

Because each gear on the main shaft floats on the main shaft, the traditional needle roller bearings are eliminated, making the structure of the main shaft assembly simpler. When working, the radial forces exerted by the two countershaft gears on the main shaft gear are equal in size and opposite in direction, and cancel each other out, so that the main shaft only bears torque and does not bear bending moment, which improves the stress on the main shaft and bearings and improves the Transmission reliability and durability.

Features

  ● Due to the characteristics of the forging process, the forging of the steering gear shaft of the automobile transmission has high strength and fatigue resistance, and can withstand large steering loads.

  ● The forging process can improve the structure and performance of materials, and improve the comprehensive properties of materials such as hardness, wear resistance and corrosion resistance.

  ● Forgings can usually be formed at one time, reducing the process and cost of subsequent processing.

  ● Automobile transmission steering gear shaft forgings need to have high precision requirements to ensure the meshing of gears and the stability of transmission.

The manufacturing process of steering gear shaft forgings of automobile transmission generally includes the following steps: raw material preparation, preheating, forging, heat treatment, machining, surface treatment, etc. During the entire manufacturing process, parameters such as temperature, pressure and time need to be strictly controlled to ensure the quality and performance of forgings. The use of forging process to produce steering gear shaft forgings of automobile transmission can improve its strength, wear resistance and fatigue resistance, while improving production efficiency and reducing costs. This kind of forging is widely used in the automobile transmission system to provide reliable support for the steering function of the automobile.