Key gear processing technology in China
The machining here mainly refers to the machining of gear, shaft and other parts. Improving the level of processing technology […]
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Influence of hypoid gear torque on time-varying meshing parameters
1. Effect of torque on coincidence degree Calculate the large wheel torque as 1000 n respectively · m、2 000 N
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The theory of tooth tip sharpening of helical gear and the formation of transition surface
The intersection of the tooth surfaces on both sides of the helical gear tooth and the thickness of the tooth
Scientific
Tooth surface equation of helical gear
Before deriving the equation of helical gear, the meshing equation is obtained first. The process of machining helical gear is
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Key design technology of gear in China
(1) Present situation Gear technology powers such as Europe, America and Japan continue to improve the design level, product power
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Establishment of meshing coordinate system of helical gear
When the generating method is used to process helical gear, the main parameters are determined first: the rotation direction of
Scientific
Time varying equivalent meshing parameters of hypoid gears
The meshing position, meshing force, action direction and meshing stiffness of hypoid gear all change with time period. In the
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Seven key development areas of China gear industry
There are many types of gear products and a wide range of application fields. According to the market demand in
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Error coupling compensation principle of herringbone gear
Due to the limitation of manufacturing difficulty and production cost, it is difficult to improve the transmission stability by improving
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Finite element model of hypoid gear
Relevant parameters of hypoid gear. It is defined that the axis of the small wheel is parallel to the x-axis
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Detection and error compensation technology of spiral bevel gear
With the development of bevel gear processing and detection technology, bevel gear tooth surface detection and error compensation feedback technology
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Digital closed loop manufacturing technology of Aviation Spiral Bevel Gear
Because spiral bevel gear has the advantages of stable transmission, suitable for high-speed transmission, and very low noise and vibration,
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Current situation of gear industry in China
Driven by the rapid development of automobile, wind power, high-speed railway, construction machinery and other industries, China’s gear industry has
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Time varying meshing characteristics of hypoid gears based on finite element method
In the dynamic modeling and analysis of hypoid gear system, the meshing relationship of hypoid gear is treated as spring
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Analysis on the influence of distortion of hypoid gear cutting compensation heat treatment
1. Cutter compensation heat treatment distortion The tooth profile of hypoid gear is complex, which has the problems of difficult
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Achievements of China gear industry
China’s specialized production and new product K development of vehicle gears, represented by automobile gears, began with introduction and digestion.
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Effect of forging blank gear on mechanical properties of gear
1) The initial forging temperature is high, the holding time is long, the gear grain is coarse and overheated; If
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Material selection and microstructure of hardened gear
Due to the differences in stress conditions and working environment, the materials and heat treatment processes of gears used in
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Stress condition and technical requirements of gear
As we all know, gear is an important part of mechanical equipment. In the process of transmitting force and changing
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Experiment on influence of relative tooth surface error on contact area of hypoid gear after heat treatment
1. Test purpose In order to more clearly understand the influence of the relative helix angle error of the driving
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Gear cutting method using conical end milling cutter
In recent years, the electric vehicle and robot market has shown a rapid development trend. Gear is an important mechanical
Scientific
Analysis method of gear heat treatment contact zone offset
The tooth surface error caused by gear heat treatment distortion is the main reason for the offset of gear contact
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Stress condition and technical requirements of gear
As we all know, gear is an important part of mechanical equipment. In the process of transmitting force and changing
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Prospect of gear technology in China
As human history enters the 21st century, it has become a consensus to build a digital earth. Manufacturing informatization has
Scientific
Heat treatment distortion law of hypoid gear
In the process of heat treatment, heating and cooling of hypoid gear, due to the uneven thermal stress and tissue
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Progress of gear transmission technology in China
After the founding of new China, especially since the reform and opening up, gear transmission technology has developed greatly. The
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Causes of deformation and heat treatment defects of rear axle gear and preventive measures
1. Defect content The automobile rear axle gear is a hyperbolic bevel gear with complex shape. The deformation is inevitable
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Three dimensional modeling of hypoid gear transmission system
The hypoid gear transmission studied consists of a small hypoid gear and a large hypoid gear. Due to the complex
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Development trend of gear heat treatment technology
1. Research and develop new steel materials for gears, such as 20CrNi2Mo steel, 17CrNiMo6 steel, etc. 2. Development of new
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History of gear transmission in China
As we all know, China is an ancient country with a civilization history of thousands of years. Gear transmission technology
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Causes and preventive measures of hardened layer, hardness and heat treatment defects of rear axle gear
1. Defect content Including unreasonable distribution of hardened layer, heat treatment defects, surface hardness too high or too low heat
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Isothermal normalizing process of carburized gear blank forging waste heat
Automobile gears are usually made by alloy carburizing. The gear blank generally needs to go through multiple cold and hot
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Optimization of gear grinding machine parameters to improve gear grinding efficiency of carburized and quenched gears
Grinding parameter optimization According to the grinding characteristics of grinding wheel, reasonably improve the grinding parameters. Comparison of grinding efficiency
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Example of hobbing method for high order elliptic gear
Taking MATLAB as a tool, the three-dimensional virtual gear hobbing of high-order elliptical spur gear and helical gear is carried
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Forging process of gear blank based on minimum damage value
In forging industry, in order to improve design efficiency, reduce manufacturing cost and improve product quality, it is necessary to
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Selecting grinding wheel to improve grinding efficiency of carburized and quenched gear
The selection of grinding wheel mainly considers abrasive, particle size, hardness, binder, etc. Abrasive The selection of grinding wheel abrasive
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Composite structure design of large gear blank
As one of the most basic transmission parts in the mechanical industry, gear is used to adjust the speed and
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Methods of improving gear grinding efficiency of carburized and quenched gears
The heavy-duty gearbox gear bears a great load, which requires the characteristics of stable transmission, low noise and long service
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Influence of cutting edge shape of gear hobbing tool on tooth surface roughness
The shape of tool edge is also an important factor affecting the tooth surface roughness in gear hobbing. Two hole
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Forging and heat treatment process of large gear blank
Large gear is an important mechanical transmission part in mining machinery, steam turbine, generator and other large equipment. Its quality
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Influence of fillet radius of hob top edge on tooth surface roughness in gear hobbing
During gear hobbing, the surface quality at the gear root is determined by the fillet radius and rake angle of
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Improvement of forged gear blank production line
Some situations and solutions encountered in the forged gear blank production line are described below. (1) During parting, the forged
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Influence of gear hobbing processing parameters on tooth surface roughness
Y3150 gear hobbing machine is selected as the experimental equipment, 6542 tungsten molybdenum high-speed steel, class a gear hob with
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Production technology of forged gear blank
Straight bevel bevel gear is a component of automobile differential, which is made of low-carbon alloy steel. Its normal warm
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Measuring method of tooth surface roughness in gear hobbing
Because the gear tooth surface roughness is affected by many factors, the results obtained from different tooth surface measurement directions
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Precision forging of driven spiral bevel gear
The spiral bevel gear formed by precision forging has the advantages of reasonable streamline distribution, less material waste and high
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Calculation results of meshing stiffness of helical gears without considering tooth profile trimming
In order to verify the accuracy and rapidity of the method in this paper, the same gear parameters are used
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Precision forging and numerical simulation of driven spiral bevel gear
The precision forging process of spiral bevel gear has high requirements for pre forming and forging process parameter design. Reasonable
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Machining simulation experiment and analysis of driving gear of shearer cutting part
Based on the parameters of a shearer and combined with the actual operation, the simulation experiment is carried out by
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Numerical simulation of final forging process of spiral bevel gear and Study on die elastic deformation
The material deformation, physical field distribution and die elastic deformation of final forging process are analyzed. The shape and size
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Machining error and influence of driving gear in shearer cutting section
The transmission system of shearer cutting part is mainly composed of cutting motor, cutting drum, fixed shaft gear, gear shaft
Scientific
Establishment of comprehensive meshing stiffness model of helical gear with tooth profile trimming
When the helical gear is an ideal tooth profile, assuming that there is no backlash between the gear pairs and
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Gear cutting test on universal milling machine
In order to realize the new gear cutting method on the general milling machine, a device which can make the
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Finite element analysis of forging process of spiral bevel gear
According to the process scheme of “blanking upsetting punching compound rolling preform final forging”, the rings rolled to the required
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Gear cutting test on shaft machining center
The proposed gear cutting method can be directly realized by using a 5-axis machining center. When the vertical machining center
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Numerical simulation of final forging process of spiral bevel gear
The final forging process ultimately determines the quality of forgings, so it is very important to optimize the final forging
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Gear cutting processing of helical gear blank conical end mill
In the case of machining helical gears, the tool moves along the rotation axis of the gear blank, which is
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Gear precision forging technology warm forging process
As the project requires to find a practical production way suitable for the factory, a high-speed, single action and single
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Preform technology in forging process of spiral bevel gear
In order to study the preform process in the forging process of spiral bevel gear, the thermal mechanical coupling finite
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Analysis of forging defects of helical gears
The defects in the forging process of helical gear are shown in the figure. In the process of helical gear