Precision plastic forming part of helical gear
The precision plastic forming part of spiral gear has high dimensional accuracy and less machining allowance. It only needs a […]
The precision plastic forming part of spiral gear has high dimensional accuracy and less machining allowance. It only needs a […]
At present, the research on precision plastic forming of bevel gear and spur gear has made great progress and has
Taking a certain type of automobile rear axle spiral bevel gear as the research object, taking the product part drawing
Y. Qin and R. Balendra used abaques simulation software to study the elastic deformation of the die cavity in the
The precision forming technology of cylindrical gear comes from Germany. As early as the 1950s, due to the lack of
Precision near net shape forming of spiral gear belongs to less and no cutting technology. Due to its outstanding advantages
The numerical simulation analysis is based on the assumption of rigid plastic finite element model. Properly combine and simplify the
Taking the sun gear in a truck wheel reducer as the research object, its part drawing and three-dimensional solid model
Spiral gears include spiral cylindrical gear and spiral bevel gear. As one of the most basic parts to transmit motion
1.Open die hot die forging Open die hot die forging is the earliest forging process of driven bevel gear. With
Warm forging of helical gear is a kind of plastic forming process with less and no cutting developed on the
1.Existing process of hot die forging (cross forging) Hot die forging of driving spiral bevel gear blank is the earliest
Because the composite casting and forging process used to produce automobile rear axle spiral bevel gear has not been applied
As the starting point of casting forging compound forming process, whether the process design of casting process and the control
The rolling forming process of spur gear improves the production efficiency and material utilization, shortens the processing process, and the
Research overview of spiral bevel gear forging at home and abroad and the application of numerical simulation technology in spiral
Based on the existing forming methods of driving and driven bevel gear blank of automobile rear axle, a new composite
The driving and driven spiral bevel gears of the automobile rear axle are the key parts of the automobile rear
At present, the better process methods for producing the driven helical gear blank of automobile rear axle at home and
Automobile rear axle gear is an important part of automobile drive system. Due to its poor working condition and heavy
The figure shows the metal velocity distribution of different strokes in the cold finishing process of spiral bevel gear, in
As the starting point of casting forging compound forming process, whether the process design of casting process and the control
1. Tooth surface contact analysis of spiral bevel gear Based on the above theoretical methods, the whole process design software
The cold / hot forging drawing is determined by the helical gear part drawing. The influence of the tooth shape
1.Load stroke curve Figure 1 shows the load stroke curve of hot die forging process of different taper schemes of
Shu Qifu once put forward the concept of “equivalent blank” to study the influence of taper on the forming process
Cold extrusion process is a production technology with high precision, high efficiency, high quality and low consumption, which is widely
1.Load stroke curve Fig. 1 is the load stroke curve of spiral bevel gear blank obtained according to the approximate
The figure shows the distribution of equal effect variation in the final step. From the figure, it can be seen
Referring to the tooth size of cold precision forging preform, the closed hot die forging die chamber is designed and
Fully referring to the idea of shunting method, it is decided to adopt the approximate trapezoidal tooth profile scheme with
Based on the design of process flow, the main purpose of closed hot die forging step is to realize the
The traditional tooth surface contact mainly includes transmission error and tooth surface contact area. At present, a new analysis method,
The basic forming process of spur gear has its own obvious advantages and disadvantages. It can only solve the problems
1.Load stroke curve Figure 1 shows the load stroke curve of preforms with different cold precision forging quantities according to
CATIA software is used to complete the three-dimensional modeling of upper die, lower die and cold precision forging preforms with
The forming quality of forgings directly determines the quality and service life of products. The surface finish of the straight
The optimal parameter scheme is numerically simulated and the forming process is analyzed. The following conclusions are obtained: (1) The
The figure shows the equivalent stress distribution diagram of spiral bevel gear at different strokes in the cold finishing process,
The risk of casting forging compound forming process is controllable and the process predictability is strong; Taking the product part
1. Part drawing analysis Figure 1 is the part drawing of the driven spiral bevel gear of the rear axle
Using traditional manufacturing technology to produce high-performance complex parts has become the bottleneck restricting the improvement of product quality and
Germany, Japan and other developed countries began to study the helical gear forming process very early, and the technology is
The basic principle of split flow forging is shown in Figure 1. It is to set up metal overflow channels
The data obtained from the on-site measurement of the profile error of spiral bevel gear teeth are the readings XRK
Automobile rear axle (also known as drive axle) refers to the rear drive shaft and related components used to transfer
The figure shows the stroke load curve of the helical gear cold finishing process. It can be seen from the
As one of the main transmission parts of automobile, the driven spiral bevel gear of automobile rear axle has great
Physical simulation is a method based on similarity theory and combined with experiment to study the essence and law of
Use CATIA three-dimensional mathematical modeling software to establish the three-dimensional mathematical models of the upper die and lower die in
In the process of metal plastic forming, most of the deformation work of metal plastic deformation will be transformed into
The analysis of metal flow law can make us more clearly understand the flow law of metal in the forming
The process principle of floating die is shown in the figure. It was first put forward in 1987 when scholars
Based on the generating principle, the profile error of gear teeth is measured on the machine, and the workpiece needs
Equivalent strain refers to the strain equivalent to unidirectional strain formed by the appropriate combination of various strain components in
The equivalent stress distribution diagram can clearly show the equivalent stress distribution in the bevel gear blank, so that the
During the precision forging process of the driven spiral bevel gear of the automobile rear axle, the load will change
By analyzing the equivalent stress distribution obtained from each group of simulation experiments, it is found that the equivalent stress
Stress is the internal force per unit area, which reflects the stress of spiral bevel gear blank. Figures (a), (b),
It can be seen from the research that the change of finishing forming force is not only affected by the