Material selection and microstructure of hardened gear
Gears used in different machines have great differences in material and heat treatment process due to the differences in stress […]
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The hardened layer of gear is too shallow
The surface hardness of carburized gear is too shallow, which not only reduces the anti peeling performance of surface hardened
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Data acquisition of tooth surface point cloud in reverse engineering of spiral bevel gear
The so-called “cloud points” data refers to the three-dimensional data of the real object measured by various methods in the
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Tooth cutting test equipment for Hypoid Gear with small number of teeth
The gear cutting test of hypoid gear was carried out on gh-35 gear milling machine in gear laboratory. Gh-35 spiral
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Analysis of Gear Heat Treatment Defects
Gear is the main part of power transmission in all kinds of machinery. During operation, the tooth surface of the
Scientific
Excessive carburization of gear surface
Due to improper treatment and excessive carburization, massive and network carbides will appear on the surface of carburized gear. When
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Application of reverse engineering in surveying and mapping of involute cylindrical spur gear
In coal machinery equipment, many gear devices in China are imported from abroad. With the influence of factors such as
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3D reconstruction model of spiral bevel gear reverse engineering point cloud
3D model reconstruction mainly uses the point cloud data on the model surface collected by spiral bevel gear reverse engineering
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Processing of tooth surface point cloud in reverse engineering of spiral bevel gear
The processing of tooth surface point cloud in reverse engineering of spiral bevel gear is a very important process, which
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Research on reverse engineering modeling of spiral bevel gear
Spiral bevel gear is an important part of high-precision equipment. Spiral gear is generally processed by spiral milling machine. Because
Scientific
Calculation of axial force of hypoid gear pair
For loaded working side: The axial force fax1d of hypoid gear pinion is: The axial force fax2d of hypoid gear
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Tooth cutting test of hypoid gear with few teeth
Hypoid gears are difficult to manufacture due to the complex tooth surface structure. In this chapter, according to the theoretical
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Technical level of domestic gear heat treatment furnace
Computer technology is applied to the control of domestic heat treatment furnace, which realizes high precision and multi-function. Control accuracy:
Scientific
Causes and preventive measures of metallographic structure and heat treatment defects of rear axle gear
1. Defect content Including coarse martensite, excessive retained austenite as shown in figure (a), excessive surface carbides as shown in
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Accurate modeling of hypoid gear pair with small number of teeth and large reduction ratio
Taking the modeling process of small wheel as an example, this paper introduces the modeling process of hypoid gear with
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Research status of spiral bevel gear
Gleason of the United States has always been in a leading position in the world in the design and processing
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Calculation of tangential force of hypoid gear pair
In order to ensure that the working surface of the designed hypoid gear with small number of teeth bears the
Scientific
Influence of input torque on dynamic load performance of spiral bevel gear transmission
Other parameters remain unchanged. Under different input torques, the variation of dynamic load coefficient amplitude of spiral bevel gear transmission
Scientific
Principle of virtual gear hobbing
As shown in the figure 1, the tool rack pitch line AB is a straight line. During gear hobbing, AB
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Development of gear heat treatment equipment
In addition to the old standard well carburizing furnace, deep carburizing well furnace, sealed box multi-purpose furnace, single and double
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Tooth surface equation of hypoid gear with few teeth
Using the meshing principle of hypoid gear and based on the meshing equation, the tooth surface equation is deduced. The
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Study on hypoid gear with small number of teeth and large reduction ratio
Focus on hypoid gears with large reduction ratio with 2-4 small teeth and transmission ratio of more than 10. Because
Scientific
Undercut inspection of hypoid gear
In general, undercutting will not occur in the large wheel of hypoid gear with small number of teeth and large
Scientific
Hobbing linkage model of high order elliptic helical gear
The feed motion of hobbing helical gear is a helix, which can be divided into the vertical motion VZ of
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New technology of gear heat treatment
ZHY gear senior engineer team proposed a new heat treatment process for obtaining Austempered bainite ductile iron, namely room temperature
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Determination of pitch cone of hypoid gear with few teeth
For the design of hypoid gear pair blank with small number of teeth and large reduction ratio, the axle intersection
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Study on hypoid gear with small number of teeth and large reduction ratio
Taking the hypoid gear with 2-4 teeth and transmission ratio of 10-30 as the research object, the main research work
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Research on hypoid gear
Hypoid gear, as the main part of mechanical transmission system, is widely used in automobile, engineering machinery, mechatronics products and
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Influence of supporting stiffness of driven gear of spiral bevel gear on dynamic load performance of spiral bevel gear transmission
Other parameters remain unchanged. Under different support stiffness of spiral bevel gear driving wheel, the variation of dynamic load coefficient
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Research on control system of NC spiral bevel gear machining machine tool
Because spiral bevel gear is widely used in all walks of life, the development of spiral bevel gear processing machine
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Gear hobbing linkage model of high order elliptic spur gear
As shown in the figure, the machine tool coordinate system s (o-xyz) is established. The X axis and Z axis
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Development of new technology for gear heat treatment
Austenite Bainite Ductile iron has good comprehensive mechanical properties of high strength, high elongation and high impact value, as well
Scientific
Calculation method of natural frequency and vibration mode of spiral bevel gear transmission
The vibration characteristics of mechanical system can usually be described by the natural frequency and vibration mode of the system.
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Research status of gear strength analysis methods
The gear strength calculation is based on the calculation formula proposed by and. Various coefficients are used to correct the
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Defects of gear heat treatment and technical improvement scheme
Gear heat treatment deformation is affected by many aspects, such as part shape, raw materials, forging and preliminary heat treatment,
Scientific
Hobbing conditions of high order elliptic gears
The gear hobbing condition of non-circular gear is that the pitch curve is not concave, that is, the radius of
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Analysis of dynamic characteristics of spiral bevel gear transmission with additional damping ring
Damping ring vibration reduction technology is an effective measure to improve the vibration characteristics of gears. By embedding damping rings
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Finite element modeling of spiral bevel gear pair
The meshing stiffness of cylindrical gear is usually calculated as a two-dimensional plane problem. The elastic deformation of single tooth
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Defects of gear heat treatment and examples of technical improvement
The problem of spline hole distortion of xf-125 primary transmission gear by China First Tractor internal combustion engine company is
Scientific
Higher order elliptic gear pitch curve equation
Based on the ellipse, keep the polar diameter unchanged, and reduce the polar angle of the ellipse by an integer
Scientific
Calculation of meshing stiffness of helical gears
The helical gear is divided into m slice helical gears along the tooth width direction AA ‘, the M slice
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Blank dimensions of spur gears
During precision forging blanking, the blank must be accurate. Due to the large hole of spur gear, there are two
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Defects and technical improvement of gear heat treatment
The deformation of gear heat treatment is very complex, which is a comprehensive reflection of the factors affecting the deformation
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Development of gear processing machine tools abroad
Since the 20th century, the demand for gears has increased rapidly, which has promoted the development and production of gear
Scientific
Angle relation between gear hob and gear
In the process of gear hobbing, according to the ideal processing conditions, that is, without considering any external error, the
Scientific
Bench loading test of drive axle hypoid gear
In order to verify the correctness of the drive axle model and LTCA simulation results, the bench loading test is
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The vibration characteristics of gear hobbing machine are analyzed
The process of vibration signal transmission caused by self-excited vibration between hob and workpiece in the machining process of machine
Scientific
Influence of tool radial circular runout error on Gear Hobbing
The tool radial runout error ∆ mainly affects the tooth profile error of the gear. The modeling is shown in
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Research progress of gear chemical heat treatment process
1. Chongqing Changjiang diesel engine factory has carried out rapid gas nitrocarburizing process test and mass production assessment on 45
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Overview of the development of China’s gear industry
As the core mechanical basic component, gear is widely used in automobile, ship, aerospace, high-speed railway, energy equipment, intelligent manufacturing
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Load bearing contact area and load transmission error of hypoid gear tooth surface of drive axle
Before LTCA analysis, firstly, the three-dimensional model of hypoid gear needs to be aligned for finite element mesh generation to
Scientific
Influence of tool rake angle error on Gear Hobbing
The schematic diagram of tool forefoot error is shown in the figure. When the cutter is grinding, there is an
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Machining error analysis of gear hobbing machine
There are 24 errors affecting the mutual position of gear hob and workpiece, including 12 motion errors and 12 installation
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Error analysis of gear hobbing machining system
In the process of gear hobbing machine machining, whether it is machine tool, fixture or meshing motion, there are errors,
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Research progress of gear annealing and quenching and tempering
For a long time, the forging blanks of car gears are mostly normalized. In recent years, with the diversification of
Scientific
Design contact area and transmission error of hypoid gear tooth surface of drive axle
Under the actual working condition, due to the meshing dislocation of the drive axle hypoid gear under the load, the
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Cold extrusion process of spur gear
The cold extrusion process of spur gear is a net forming or near net forming process. Its production efficiency and
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Gear material and heat treatment forming
1. Practice has proved that the general machine tool gears are made of medium carbon steel and treated by induction
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Compound forging process of spur gear
Spur gear is the key component of high-end equipment. The design and manufacture of high life, high performance, high efficiency
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Meshing misalignment of hypoid gear of drive axle
The installation position of hypoid gear in the drive axle transmission system is shown in Figure 1. The hypoid gear