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
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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
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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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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
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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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Characteristics and application of precision forging process for spur gears
Compared with ordinary die forgings, the shape of precision forgings is more complex, the machining allowance is less or even
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Analysis and preventive measures of heat treatment defects of automobile rear axle gears
Automobile rear axle gear is one of the important parts in automobile driving system. It transmits power in the process
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Development status of gear die and forging industry
Gear mold is an important basic equipment of industrial production and an integral part of high-tech industry. Gear mold technology
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Gear hobbing method of high order elliptic gear
The research on non-circular gears with typical pitch curve is a representative direction of non-circular gear design and manufacturing. The
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Analysis of precision forging of spiral bevel gear
The forging of spiral bevel gear belongs to complex curved surface forging. As shown in the figure, the forging difficulty
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Influence of geometric parameters on precision forging of spiral bevel gears
There are still some difficulties in the precision forging process, so the forging of spiral bevel gear has not been
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Simulation of precision forging process of spiral bevel gear by DEFORM-3D
Import the cold precision forging die and blank model of spiral bevel gear into DEFORM-3D software. The specific steps are
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Application of precision forging in tractor gear
Precision forging (net forming or near net forming) refers to the forming technology that only needs a small amount of
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Analytical calculation model of meshing stiffness of helical gear pair with tooth profile modification
In helical gear transmission system, internal excitation such as stiffness excitation and error excitation of helical gear is an important
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Analysis of die for Cold Precision Forging Spiral Bevel Gear
The precision forging adopts the closed die forging die. During the forging process, the gap between the upper die and
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Design and machining of traditional spiral bevel gear
The design of spiral bevel gear includes the determination of basic parameters of gear pair, the selection of tooth cutting
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Calculation example of tooth profile parameters of spiral bevel gear
1. Calculation of tooth profile geometric parameters of precision forged small module spiral bevel gears Under the cold forging process,
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Finite element model of drive axle hypoid gear
The research object is a light bus produced by the company. According to the drive axle drawing of the vehicle,
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Tooth profile machining of spiral bevel gear
As the basic transmission parts of the machinery industry, more and more high-strength and multi-purpose gears and gear like products
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Influence of alignment error and error coupling compensation on meshing characteristics of herringbone gear
Herringbone gear transmission has the advantages of high bearing capacity, stable transmission and small axial load. It plays an important
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Influence of temperature on forging forming of helical gear
The strain of helical gear forging is different under different blank temperature. Figure 1 shows the strain distribution of blank
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Friction coefficient and meshing efficiency of spiral bevel gears
Spiral bevel gears are widely used in heavy load conditions such as helicopters, ships and automobiles. Their friction characteristics are
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Analysis of forging speed field of helical gear
Fig. 1 shows the blank flow velocity field under different pressing amounts. The velocity field of helical gear die forging
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Establishment of finite element model of helical gear
The die forging process of helical gear studied adopts closed die forging process, which is divided into two processes: blanking
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Gear precision forging technology – die manufacturing and gear measurement
The precision of cold forming die is the key of gear precision forging technology. At present, the analysis method has
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Research trend of root crack of spur gear
The research of fatigue crack is a part of reliability research. In engineering application, it is mainly to predict the
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Experimental design of dynamic characteristics of helical gear transmission system
According to the operating conditions of high-speed railway traction gear transmission system, different experimental conditions are designed and steady-state experiments
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Study on continuous cold extrusion process of spur gear (sun gear)
Based on the numerical simulation, the cold extrusion process and die design of spur cylindrical gear (sun gear) are partially
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Continuous extrusion forming of external teeth of spur gear
Stack two spur gear ring blanks into the outer tooth female die sleeve, and insert the spur gear ring blank
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Gear precision forging technology – cold treatment process
As the first stage of gear precision forging, hot and warm forging process is relatively easy to control, because the
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Differential eccentric gear train transplanting mechanism
As the core component of the high-speed transplanter, the rotary transplanting mechanism first used the eccentric gear to drive the
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Rolling forming technology of spur gear
With the rapid development of China’s aerospace, engineering machinery and truck industries, spur gear is an indispensable part of heavy-duty
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Design of eccentric modified gear
Due to its simple design and convenient processing, eccentric circular gear is widely used in the transmission system of non-uniform
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Analysis of rice transplanting mechanism with eccentric gear planetary system
At present, rice transplanters used in China, such as 2zt-935 rice transplanter produced by Yanji rice transplanter factory in Jilin
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Future development of face gear manufacturing technology
Based on their manufacturing principles, the manufacturing technology of face gear can be generally divided into three categories: Based on
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Honing, milling and planing of face gear
In order to reduce the surface roughness of hard gear and trim the tooth surface texture after grinding, Wang Yanzhong
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Technical requirements and process analysis of aviation fuel pump gear
1. Casting technical requirements The structure of gear parts of an oil pump is shown in Fig. 1 and Fig.
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Additive manufacturing and secondary machining face gear
As an additive manufacturing technology, 3D printing is a new technology that subverts the traditional manufacturing and has become the
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Delayed crack of aviation fuel pump gear
The design accuracy of gear pair of fuel oil gear pump is high, and the gear accuracy generally reaches level
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Single tooth indexing grinding gear with straight edge cutter
Because the first three machining methods are based on the simulation of the meshing between the small wheel (or production
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Disc cutter grinding face gear
Dr. Stadtfeld of Greenson first outlined the idea of machining face gear with dished grinding wheel. The use of dished
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Worm cutter grinding face gear
Due to the low efficiency and accuracy of gear shaping and can only cut soft tooth surface gears, which is
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Gear shaping machining of face gear
Fellows company has invented the gear shaping processing of face gear as early as 1945. The parameters of the gear
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NC machining technology of spiral bevel gear
The processing technology of spiral bevel gear is to first cut the gear surface, then select some reference points on
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Cause analysis of grinding crack of shearer gear
The material composition of the shearer gear meets the technical requirements, the hardness of the oxidation zone at the tooth
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Mechanism analysis of grinding cracks on automobile steering shaft teeth
The microstructure before carburizing and quenching is ferrite + pearlite. Pearlite is distributed on the ferrite matrix in lamellar form.
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Surface crack of s40c steel gear
With the advent of China’s high-speed, heavy load, alpine and other models, especially the successful launch of China’s standard EMU,
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Technological process of grinding burns and cracks on hard tooth surface of cylindrical gear
There is a heat treatment tooth surface hardening process before grinding the hardened cylindrical gear, which will inevitably lead to
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Improvement of machining technology of large size and high precision spiral bevel gear
The design of side gear and quasi double-sided curved surface gear is the same as that of arc gear and
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Machining technology of large size and high precision spiral bevel gear
Processing principle of spiral bevel gear: the Simulation wheel is a processed spiral bevel gear, and the unified chuck is
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Machining of large size and high precision spiral bevel gear
Spiral bevel gear is a key part in the field of mechanical transmission, which transmits motion or power between intersecting
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Cutting simulation of equal height spiral bevel gear
Equal height spiral bevel gear is widely used in automobile, aviation, aerospace and other fields because of its high transmission
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Composition of gear cutting system
1.Hardware structure of gear cutting system Hardware structure of gear cutting system: main control computer and main control system are
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CNC system for gear cutting
NC machining of gears is an effective way to improve gear accuracy and machining efficiency. It is one of the
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Melting and heat treatment of cast steel large gear of mining mill
The method of electric arc furnace primary smelting + LF refining is adopted for liquid steel smelting. In order to