Hot precision forging of spur gear and its compound forming process
Hot precision forging of spur gear is a precision forming method developed from hot die forging technology. It is mainly […]
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Precision forming technology of large modulus and large specification spur gear
With the rapid development of automobile industry, precision forming of spur gear has become an inevitable trend in the development
Scientific
Tooth surface equation of hypoid gear
In the process of generating, the wheel blank and the forming wheel are hobbed to form a cycloid hypoid gear.
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Machining error analysis of driving gear in shearer cutting section
Because MATLAB software adopts a unified data type without specifying variables, and has good scalability and high programming efficiency, it
Scientific
Finite element calculation model of meshing stiffness of spiral bevel gear
The stiffness calculation of spiral bevel gear requires the comprehensive elastic deformation UN of contact force FN and contact position.
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Meshing stiffness of spiral bevel gear based on finite element method
Stiffness excitation is one of the main excitation of gear meshing vibration. Determining the elastic deformation and meshing stiffness of
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Development of automobile gear manufacturing industry in China
Automobile gear manufacturing industry is the industry with the largest annual output, the highest output value and the largest number
Scientific
Equation of hypoid gear face hobbing cutter
According to the cyclo palloid method, the gear is processed with a multi head cutter head. The cutter head adopts
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Kinematic die for strong tooth scraping of cylindrical gear
Kinematic model of strong tooth scraping take spur gear as an example. The kinematic model of strong tooth scraping is
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Composition of gear products in China
According to the statistics of China gear professional association, in 2014, the product composition of China’s gear industry was 60%
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Manufacturing technology of curved bevel gear for automobile drive axle
At present, there are two kinds of gear systems in China, Gleason system and Oricon system. The tooth line made
Scientific
Loaded meshing stiffness of hypoid gear
Then, the contact analysis of the gear under loading is carried out. The resistance moment applied at the output end
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Meshing assembly and motion simulation of helical cylindrical gear
Using the parametric design of helical gear in Chapter 2, a helical gear with the same modulus as helical cylindrical
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Key process equipment technology of gear in China
Gear is an important basic part of electromechanical products. Gear transmission is a main form of transmitting machine power and
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Transmission error of hypoid gear under small load
According to the gear meshing stiffness calculation model, before calculating the gear meshing stiffness under loading, the transmission error of
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Research on hobbing of helical gear
In the parametric design of involute helical cylindrical gear, the meshing motion simulation of helical cylindrical gear and helical surface
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Parametric modeling of helical cylindrical gears
Before the meshing motion simulation of helical gear, the involute helical cylindrical gear is created first. According to the involute
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Realization of helical gear hobbing
When hobbing helical gear, first check the correctness of fixture installation, the accuracy of tool setting and the adjustment of
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Key process equipment technology of gear in China
(1) Present situation ① Gear cutting machine tools: cylindrical gear making machine tools such as gear hobbing machine, gear shaper
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Establishment of finite element model of hypoid gear
The established three-dimensional model of hypoid gear is saved in *. STP format and imported into the software HyperMesh for
Scientific
Structural parameters of helical gear hob
(1) Outer diameter of helical gear hob The outer diameter of helical gear hob not only affects the stability of
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Gear lubrication, cooling and sealing technology in China
(1) Present situation The friction design of gear transmission, the development of high-quality lubricating medium and the research of efficient
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Verification of meshing stiffness model of hypoid gear
The spur gear is selected as the object to verify the model. This is mainly because the current spur gear
Scientific
Selection of basic worm of helical gear hob
Helical gear hob is one of the most widely used high-efficiency tools. Gears with any number of teeth with the
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Gear materials and heat treatment technology in China
(1) Present situation ① The quality of gear materials is low, there are many defects in castings and forgings, and
Scientific
Time varying meshing stiffness of hypoid gear of automobile drive axle
The previous gear meshing model is based on empirical design formula or gear geometric meshing analysis. With the improvement of
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Determination of hobbing scheme for helical gear
Main motion transmission chain: the main motion chain to realize the rotation of gear hobbing hob: motor-1-2-uv-3-4-hob. Among them, UV
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Introduction to Y3150E gear hobbing machine
Because gears are widely used and used, gear processing machine tools are key equipment in engineering machinery, automobile industry and
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Hobbing principle of helical gear
Gear hobbing belongs to the generating method, and its principle is equivalent to the meshing transmission of a pair of
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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
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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
Scientific
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
Scientific
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
Scientific
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
Scientific
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
Scientific
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
Scientific
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
Scientific
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
Scientific
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
Scientific
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