Precision forging process of spur gear
Yang Cheng et al. Analyzed the influence of mandrel exchange, floating die and local upsetting on the precision forging of […]
Yang Cheng et al. Analyzed the influence of mandrel exchange, floating die and local upsetting on the precision forging of […]
Spiral bevel gear has conical shape and arc tooth shape, which is mainly used for transmission between intersecting shafts. Compared
The figure shows the universal material testing machine selected for experimental research. The maximum test load of the helical gear
The design, research, processing and production of gears at home and abroad have a history of many years and have
Driven spiral bevel gear is an important part in automobile, aerospace and other fields. The optimization of its production process
By changing the die structure and the cone angle of lead billet, the test is carried out on the universal
The precision forging of spiral bevel gear parts is numerically simulated, and the accuracy of the numerical simulation results is
Combined with the numerical simulation analysis results and the best process parameters, experimental research is carried out to verify the
The three-dimensional geometric modeling of the punch and die is completed by ug-3 software, as shown in the three-dimensional geometric
According to the characteristics of cold and closed bevel gear finishing, two schemes of cold and closed bevel gear finishing
The influence of the bearing stiffness of the central component of the system on the dynamic characteristics of planetary gears
As shown in the figure, the equivalent stress distribution diagram corresponding to different finishing quantities at the end of cold
Based on the analysis of the forging process of the double spiral bevel gear of an automobile, the forming process
Gear research, production and production at home and abroad have been put into production for many years, and fruitful results
The reason why lead is selected as the blank of spiral bevel gear is that the recrystallization temperature of lead
When forming parts under cold extrusion, the selection of die materials for precision forming of spiral bevel gear should have
To calculate the vibration noise of the acoustic boundary element model of helical gear system, it is necessary to obtain
Among the designed parts, the tooth shape concave die of spiral bevel gear is the most critical part. Because the
Bevel angle of preform of spiral bevel gear α It has a great influence on the filling fullness of tooth
Finite element method is widely used in various fields of plastic processing. It is not only an important means to
In order to verify the correctness of the on-machine measurement method for the profile error of spiral bevel gear, a
In order to facilitate the analysis, a quarter of the spiral bevel gear is selected as the research object. As
The position of the inner shunting surface is determined by the relative height of the punch and the die core,
Adopting the compound forming process of hot forging and cold finishing the tooth shape can eliminate the defects of oxidation
The figure is the machine tool model diagram of h350g CNC spiral bevel gear grinding machine. The linear axis X
During the simulation, the temperatures of 900 ℃, 950 ℃, 1000 ℃, 1050 ℃ and 1100 ℃ are selected, and
The size of the outer shunt gap is determined by the distance between the lower end face of the upper
The figure shows the relationship curve of forming force corresponding to the finishing amount of bevel gear tooth blank. As
The volume forming of metal is a complex plastic large deformation process. There are geometric nonlinearity caused by large deformation
The size of the inner shunt gap is determined by the distance between the lower end face of the punch
The influence of the change of the relative position of the outer split surface on the tooth shape quality of
① Establishment of structural finite element model of helical gear system The acoustic grid requires the grid size to be
The position of the split surface of the helical gear is determined by the distance between the male die and
The shape of preform has a great influence on the cavity filling, material consumption and forming force of metal in
Spiral bevel gear parts are formed by double split precision forging. In the forming process, the forming quality and forming
Analyze each tooth of the meshing diagram of the driving wheel and driven wheel, number each tooth, as shown in
Under the condition of ensuring the same volume and shape of the preform of spiral bevel gear, the internal split
Because DEFORM-3D software does not have the function of 3D modeling, UG modeling software is used to establish the solid
Figure (a) is the sectional grid diagram of some forgings before precision forging of driven spiral bevel gear, figures (b)
Gear is an indispensable part in mechanical transmission. It needs special equipment and cutting tools for processing. The processing technology
The driven spiral bevel gear of an automobile rear axle is taken as the research object, and its part structure
Using ADAMS software, the kinematics of non-circular gear is analyzed to verify whether the output transmission ratio of non-circular gear
Figure 1 is the structure diagram of the designed precision forging part. Because the tooth surface of the spiral bevel
There are many factors affecting the precision forging of driven spiral bevel gear, large forming load, complex metal filling process,
Spiral bevel gear is a key part to realize intersecting shaft or staggered shaft transmission in the field of mechanical
Spiral bevel gear is the key part of the main reducer of automobile rear axle. Its main function is to
1) Design of precision forging process of helical gear. According to the principle of precision forging and the structural characteristics
At present, the main processing method of spiral bevel gear is cutting method, and its whole production process is: blank
In UG software, open the forging drawing interface, and open the analysis → measuring body → selecting body → volume
All mechanical motions are accompanied by the loss of mechanical energy, that is, all vibrations have damping. The damping force
Precision forging technology is a less cutting technology, that is, after metal plastic forming, it can be applied to mechanical
China’s gear manufacturing industry started in the 1950s. After more than ten years of development, it has initially laid the
The friction coefficient has an important influence on the dynamic response characteristics of helical gear. Based on the coupled dynamic
In the 21st century, new changes have taken place in the world pattern. As an emerging developing country, China has
The pitch tooth line is a curve. This determines that when the teeth mesh, each pair of teeth can only
In order to obtain the precision forging spiral bevel gear that meets the design requirements, it is necessary to comprehensively
20CrMnTi gear steel is used for precision forging driven spiral bevel gear, and lead is selected as the simulation material.
In hot precision forging of driven bevel gear, the choice of die shape and size is very important. It not
Basic dimensions: the shape of the blank is close to the shape of the driven spiral bevel gear after forming.
Compared with mechanical press, friction press has no fixed bottom dead center, convenient installation and debugging of die and less