Development status of rack and pinion steering gear abroad
The steering gears commonly used in modern cars include recirculating ball steering gear, worm crank finger pin steering gear, rack […]
The steering gears commonly used in modern cars include recirculating ball steering gear, worm crank finger pin steering gear, rack […]
The metallurgical quality of steel for truck gear has the following requirements: 1.End hardenability At present, the bandwidth control of
After the above experimental analysis and referring to the metallographic inspection of Automobile Carburized Gears, it can be observed that
The purpose of pre heat treatment is to obtain uniform and fine structure and completely eliminate stress. The pre heat
Taking 9t one speed gear parts as an example, the effects of different pre heat treatment methods on the deformation
Gear is an important part of automobile transmission device, which has the functions of changing movement direction, changing speed and
For the research of tooth surface friction, more attention is paid to the heating and energy consumption caused by friction,
Three typical parts of heavy truck gearbox hc7s-120: first and second speed gear sleeve (representative of thin-walled castings), fourth speed
Material quality is affected by multiple factors. Different origin, smelting methods, quality categories and supply forms of truck bevel gear
The process tests of 9T 34556 speed gear sleeve with different heat treatment methods, different heat treatment process parameters and
In 1674, Danish astronomer Romer used the enveloping cycloid as the gear tooth profile to obtain the gear with conjugate
Through the process test of two different pre heat treatments on the deformation law of the parts after final carburizing
From the above analysis of the service conditions and failure forms of gears, it is proposed that the performance requirements
1. Test purpose Verifying the rationality of bevel gear process is an effective guarantee to reduce the heat treatment deformation
1. Effect of pre heat treatment on cylindrical gear deformation Before 2010, our company adopted the ordinary normalizing method for
Among the main factors affecting the gear heat treatment deformation, the only thing that can be improved by the heat
The automotive helical gear transmission system under various complex working conditions makes the surface strengthening technology of automotive helical gear
The gearbox gear of heavy truck is one of the three major products of ZHY Gear. It has been supporting
The influence of material quality on the quality of truck helical gear has attracted more and more attention. The unstable
The machining method and residual stress of spiral gear will have a certain influence on the deformation of carburized spiral
Forging can make the forging billet segregation, uniform structure and reduce the banded structure, which is conducive to reducing the
The deformation of heavy truck gearbox gear after carburizing and quenching is caused by the gear in the process of
The purpose of gear modification is to make the pressure distribution on the tooth surface as uniform as possible after
With the continuous development of China’s automobile industry and national economy year-on-year, the heavy vehicle industry has also entered a
Due to these irreplaceable advantages, spiral bevel gear has been widely used as an important part in the transmission system
At the beginning of this century, the German automobile industry used high Ni alloy steel to produce high load truck
Heavy truck gear refers to all kinds of gears in the gearbox of heavy truck. The automobile gearbox is located
① Aiming at the problems of serious tooth tip collapse, low material utilization, low forming accuracy and low die service
In the field of scientific research and engineering technology, numerical simulation is a basic research method that pays equal attention
Shot peening is a widely used method to improve the fatigue strength of automobile gears by mechanical means to produce
With the continuous improvement of automotive gear requirements and the continuous development of automotive gear surface processing engineering technology, the
Gear is an important part for transmitting power in mechanical devices. The Japanese mechanical society has conducted systematic investigation and
Spiral bevel gear is the general name of bevel gear whose tooth surface pitch line (the intersection line of tooth
Combined with the actual needs of gear hobbing tools in automobile gear production line, select the problems often encountered in
Taking the spur cylindrical gear for truck wheel reducer as the research object, a new compound forming process scheme of
Based on the open die forging of spiral bevel gear, a new type of precision forging die without flash is
Custom gear manufacturing plays a crucial role in meeting the unique requirements of specialized applications across various industries. Unlike standard
The numerical simulation of precision forging is to track and describe the forming process of the blank metal of the
In order to ensure the smooth implementation of cold extrusion production and processing, in addition to having a pair of
In the 1950s, gears were mainly obtained by cutting, and the output was very low. At that time, German Burwell
Gear is a basic mechanical part widely used to transmit power and change the speed and direction of movement. It
Over the years, many scholars at home and abroad have been committed to the research of precision forging technology of
With its convenient operability and accuracy of simulation results, finite element software helps designers greatly shorten the R & D
As a basic part, spiral bevel gear is widely used in the machinery industry and is in great demand, but
For a long time, researchers and scholars all over the world have made unremitting efforts on the deformation law analysis,
Improving the service life of cold extrusion die is the key point of precision forming of large modulus spur gear.
All automobile gear hob teeth must be in the same center, especially for insert hob teeth with undercutting and chamfering
After the surface modeling and Simulation of straight cup grinding wheel is completed, the tooth surface needs to be discretized
It has the advantages of compact structure and stable operation, and is the most widely used mechanical transmission system. As
1. Assumptions The numerical analysis of the induction heating process of bevel gear by using the finite element software ANSYS
As can be seen from Fig. 1a) and Fig. 1d), a more uniform temperature field model is obtained when the
By optimizing the cold extrusion process parameters of spur gears, spur gears with high forming quality can be obtained, but
Combined with the characteristics of medium and high frequency induction heating, a dual frequency induction heating process is proposed to
Firstly, the simulation scheme is formulated for the numerical simulation of double frequency induction heating of bevel gear, the problems
CNC three-axis gear hobbing machine can feed in axial, tangential and radial directions at the same time. The axial feed
In the process route of gear processing, generally after gear finishing, the surface induction quenching is required to improve the
Aiming at the problems of large end machining allowance, large tooth tip collapse angle and large forming load in the
In the surface hardening technology of bevel gear, induction heating quenching is one of the four basic processes. Induction heating
With the in-depth research on the forming process of spur gears and the continuous development of market demand, the modern
With the increase of wear degree, the cutting performance of gear hob will gradually decline, which will reduce the finish