Three dimensional simulation test of hypoid gear with small number of teeth and large reduction ratio
Compared with other hypoid gears with small number of teeth and large reduction ratio, hypoid gears not only have many […]
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Application test based on gear hobbing model simulation of spur gear
Gear as the core mechanical foundation. Despite the high requirements for the manufacturing and installation accuracy of gears, with the […]
Scientific
Analysis of stroke load curve in the total forging process of spiral bevel gear blank
The stroke load curve of the die in the general forging process of the spiral bevel gear blank is shown […]
Scientific
Three dimensional meshing model of gear hobbing
During gear hobbing, the hob axis and gear axis must meet a certain axis intersection angle. The installation axis intersection […]
Scientific
Simulation of tooth surface model of spur gear
According to the parameters of spur gear, the indexing circle radius R2 of spur gear is: Where: M2 — modulus […]
Scientific
Numerical simulation of forging process of driving spiral bevel gear blank
The CAD two-dimensional drawing of the upper and lower molds is shown in Figure 1. 1.Mold geometric model establishment According […]
Scientific
Influence of initial forging temperature and friction coefficient on forming effect of spiral bevel gear
Taking the initial forging temperature of spiral bevel gear as 1000 ° C, 1050 ° C and 1100 ° C […]
Scientific
Analysis of stress-strain and temperature variation with time in forging process of spiral bevel gear blank
In the DEFORM-3D post-processing function, the time-dependent curves of the equivalent stress-strain and temperature at a certain point of the […]
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Digital simulation of gear hobbing process
Digital simulation technology is a comprehensive technology based on a variety of disciplines and theories, using computer and its corresponding […]
Scientific
Establishment of tooth surface coordinate system of spur gear
The pressure equation at any point on the spur tooth surface of the cylindrical gear α ， The expanded length […]
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Precision forging of spiral bevel gear blank
Although a lot of research has been done on precision forging of spiral bevel gears at home and abroad, there […]
Scientific
Influence of die structure of spiral bevel gear forging blank on forming effect
Through the stress-strain analysis and temperature analysis of the spiral bevel gear blank after hot forging, we know that the […]
Scientific
Numerical simulation of forging and extrusion process of driving spiral bevel gear blank
1、 Establishment of geometric model Using pro/e4.0, the geometric model of extrusion process is established, including the geometric model of […]
Scientific
Forging and drawing forming method for driving spiral bevel gear blank
Due to the problems in the free forging process of the cutting block, other forming methods are considered to replace […]
Scientific
Numerical simulation of forging process of driving spiral bevel gear blank
The forging process of driving spiral bevel gear blank also includes four steps: heating, drawing, die forging and trimming. That […]
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Installation requirements of hob spindle and gear hob
The fit between hob spindle and gear hob inner hole should be accurate and firm, which is necessary to improve […]
Scientific
Equivalent stress analysis of spiral bevel gear blank during final forging
The equivalent stress distribution of spiral bevel gear blank during final forging is shown in the figure. The maximum stress […]
Scientific
Establishment of tooth surface coordinate system of spur gear
Spur cylindrical gear coordinate system: SG, (OG: XG, YG, ZG) take the center of spur cylindrical gear as the origin […]
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Application of numerical simulation technology in gear forging
Since the 1990s, with the development of computer software and hardware, numerical simulation methods have made great progress. There are […]
Scientific
Numerical simulation of forging and extrusion process of driving spiral bevel gear blank
1、 Metal flow law in extrusion process The metal velocity vector diagram of each stage of extrusion forming process is […]
Scientific
Overall error curve of helical gear transmission
According to the actual meshing sequence of the helical gear, the overall error curve of the unit helical gear pair […]
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Selection of gear hob
With the improvement of gear hobbing technology, gear hobs are gradually developing towards integration, small diameter and multi head. The […]
Scientific
Metal flow law in die forging process of spiral bevel gear blank
The metal velocity vector diagram of each stage in the forging process of spiral bevel gear blank is shown in […]
Scientific
Tooth surface equation of gear hob
Based on the gear hob coordinate system: SW, (ow: XW, YW, ZW), the involute helicoid model of gear hob is […]
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Application of numerical simulation technology in spur gear forging
Before the 1990s, the research and production of gear forging were mainly based on physical simulation. That is because the […]
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Machining deformation mechanism of extra large split straight bevel gear
Super large straight bevel gear is a key component in China’s large-scale equipment. Due to the limitation of transportation and […]
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Gear hobbing principle
Gear hobbing processing principle, as shown in the figure. There are many processing methods for cylindrical gears. According to the […]
Scientific
Ease_off Example analysis of vibration reduction optimization for hypoid gear
In order to study the relationship between vibration and stiffness, the meshing stiffness and frequency spectrum of different modified tooth […]
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Comparison and analysis of numerical simulation results of spiral bevel gear blank with real object
The actual forging of spiral bevel gear (without punching and trimming) is shown in the figure. Comparing the numerical simulation […]
Scientific
Metal flow law in upsetting process of spiral bevel gear blank
The metal velocity vector diagram of each stage in the upsetting process of spiral bevel gear blank is shown in […]
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Forging process of driven spiral bevel gear blank
In view of the problems of large material waste and high cost caused by the traditional die design and process […]
Scientific
Contact pressure distribution of helical gears
The contact pressure history curve during helical gear meshing is shown in Figure 1. It can be seen that the […]
Scientific
Establishment of gear hob coordinate system
Based on the selection of basic worm, it is determined that the gear hob selected in this subject is involute […]
Scientific
Ease_ Off example of vibration reduction optimization for hypoid gear
For high-precision hypoid gear pairs, in order to increase the actual coincidence degree after loading, the design of large inclination […]
Scientific
Calculation of time-varying meshing stiffness of helical gears
The meshing of helical gears can be regarded as line contact, and the load changes and distributes along the contact […]
Scientific
Contact analysis of modified helical gear
1. Law of equivalent stress and time change during helical gear meshing The variation law between the dynamic contact equivalent […]
Scientific
Basic attribute setting of spiral bevel gear blank and cutting board
The spiral bevel gear blank is set as a plastic body. Determination of initial forging temperature of spiral bevel gear […]
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Research on gear forging in China
China’s gear manufacturing industry started late. It began to produce gears in the 1950s and formed its own gear manufacturing […]
Scientific
Deformation measurement of straight bevel gear split blank
Through the measurement of the straight bevel gear split blank with the coordinate measuring instrument, it can be found that […]
Scientific
Integral error model of helical gear transmission
The overall error curve of helical gear is a complete error curve of helical gear, which is formed by measuring […]
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Machining principle and error of gear hobbing
With the progress of science and technology, the introduction of technology and the deepening of technological transformation, the processing technology […]
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Forging process of driven spiral bevel gear blank
The purpose of this paper is to simulate the forging process of the blank of the driven spiral bevel gear […]
Scientific
Expression of ease off modification tooth surface of hypoid gear pinion
According to the meshing theory and installation relationship of hyperboloid gear, the gear tooth surface is regarded as an imaginary […]
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Tooth surface vibration reduction of ease off modified hypoid gear
In order to improve the comprehensive transmission performance of automobile drive axle, the ease off modification hypoid gear tooth surface […]
Scientific
Analysis and calculation of helical gear after changing speed conditions
Increase the speed of helical gear from 25rad / s to 35rad / s, and keep the torque unchanged. Using […]
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Vibration reduction optimization of ease off modified hypoid gear
Hypoid gear is widely used in vehicle main reducer. With the development of spiral bevel gear towards high speed and […]
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Research on spur gear forging
The research on spur gear forging at home and abroad mainly focuses on the precision forging of spur gears. The […]
Scientific
Error of generating surface of gear hobbing hob
When machining and manufacturing gear hobs, there is an error between the generating surface of gear hobs and the theoretical […]
Scientific
Gear cutting processing of straight bevel gear split wheel blank
Before machining the straight bevel gear to split the wheel blank, first measure the flatness of the upper and lower […]
Scientific
Principle of helical gear profile modification
Because the coincidence degree of helical gear is not an integer, its meshing transmission process is alternating between single and […]
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Transmission error and meshing impact of Helical Gears Considering tooth surface friction
Transmission error is an important excitation that causes the vibration and noise of helical gears. It is a parameter that […]
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Digital simulation of cylindrical gear hobbing process
The basic research idea is: carry out digital simulation on the gear hobbing process of cylindrical gear, analyze the position […]
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Helical gear transmission considering tooth friction
(1) This paper breaks through the condition limitation of calculating the time-varying contact line length of helical gear multi tooth […]
Scientific
Equivalent stress nephogram of helical gear
(1) Equivalent stress nephogram of helical gear at 0.0025s It can be seen from Fig. 1 that the contact stress […]
Scientific
Time varying contact line load distribution of helical gears
The load distribution along the contact line is affected by the position and length of the helical gear contact line. […]
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Spiral bevel gear forging
Forging is a plastic forming processing method, which uses various pressure machines to exert pressure on the metal blank under […]
Scientific
Calculation of helical gear modification drum shape and determination of drum shape center
(1) Through analysis, it can be seen that there is no mechanism to determine the size of helical gear drum […]
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Common helical gear modification methods
Many scholars at home and abroad have put forward a variety of theories and methods for helical gear modification. At […]
Scientific
Classification of tangential and axial machining errors of gear hobbing
The machining error of gear is determined by the process error factors of machine tool, cutting tool, wheel blank and […]
Scientific
Machining technology and NC machining of straight bevel gear split gear blank cutting
According to the structural characteristics and the complexity of the tooth profile of the split straight bevel gear, the vertical […]