Spiral bevel gear is one of the most widely used gears
Spiral bevel gear is widely used in various mechanical products such as aircraft, ship and national defense equipment, machine tools, […]
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Discussion on failure mode of gear strength
Gear transmission is one of the most important mechanical transmission. More than 300 BC, Aristotle, the ancient Greek philosopher, expounded
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Effect of oil on fatigue strength life and wear of gears
In addition to the lubrication of gears and bearings, ATF is also used for the lubrication and cooling of hydraulic
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Noncircular gear drive mechanism
An important research direction of gear geometry is noncircular gear transmission. Its complex tooth surface geometry and special transmission performance
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Research status of temperature field in gear system
The thermal behavior of the high-speed and heavy-duty gear system has a great influence on its bearing capacity. In the
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Surface strengthening technology of anti high strength automobile gear surface contact fatigue
1. Spraying technology of superfine composite materials In recent years, Chinese and Japanese companies have studied and applied the spraying
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Design of eccentric displacement gear
The machining method of the eccentric modification gear generated by the modification method is the same as that of the
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Thermal behavior analysis of high speed and heavy load gear system
Gear transmission system is the core mechanism of mechanical equipment, which determines the performance of the whole machine. But for
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Surface strengthening of high strength automobile gear surface against contact fatigue by molybdenum disulfide coating
Molybdenum disulfide (MoS2), as a high quality solid lubricating material, has good antifriction, antiwear and bearing capacity. Molybdenum disulfide (MoS2)
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Transmission principle of eccentric gear and eccentric displacement gear
The transmission between the eccentric gears will produce the change of backlash. Therefore, when calculating the coefficient of deflection of
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Surface strengthening of high strength automobile gear surface against contact fatigue with manganese phosphate conversion coating
The application of manganese phosphate conversion coating technology in improving the surface strength of transmission parts first appeared in improving
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Measures to improve the structural performance of rocker gear shaft
According to the statistical analysis of the faults, it is found that the gears and bearings on the second shaft
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Structure of gear box of shearer rocker
As one of the main equipment of the coal mining face, the shearer is required to have high reliability in
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Heat treatment of high strength automobile gear
The strengthening technology of gear heat treatment should pay attention to the control of surface integrity, that is, to control
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Failure mode and mechanism of high strength automobile gear
The automobile gear is in the state of continuous load operation. There are rolling and sliding between the meshing surfaces
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Research on surface strengthening technology of high strength automobile gear
Gear is an important part to transmit power in mechanical devices. The Japanese mechanical society has carried out systematic investigation
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Optimization and improvement of thin-walled gear for mechanical transmission mechanism of airlock in nuclear power plant
According to the above analysis, in order to thoroughly solve the undercut fracture accident of thin-walled gear and ensure the
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Failure analysis of thin-walled gear used for mechanical transmission mechanism of airlock in nuclear power plant
According to the failure mechanism analysis of thin-walled gear, the gear material is 40Mn2. In the process of gear meshing,
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Research on rack and pinion of automobile steering gear
As the key part to change the driving direction and keep the vehicle running in a stable straight line, the
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Failure mechanism analysis of broken teeth of thin-walled gear used in mechanical transmission mechanism of airlock in nuclear power plant
It is found that the broken tooth thin-walled gear is a 2 ″ straight cylindrical gear with 12 teeth, which
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Gear machining and surface integrity control
In order to improve the production efficiency of gear machining and ensure the surface integrity of the gear, the gear
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Failure analysis of thin-walled gear for mechanical transmission mechanism of airlock in nuclear power plant
The gas gate of nuclear power plant runs through the inner and outer containment of reactor. Because of its complex
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Influence of four factors on fretting friction instability of gear shaft shoulder
The numerical calculation of the fretting friction instability state of the gear shoulder during the operation of the gear shaft
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Gear in place measurement
Gear in place measurement refers to the measurement when the instrument is installed on the gear or on the machine
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Big gear out of position measurement
In the field of gear measurement, the measurement of large and small gears has always been a technical problem, among
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Study on surface oxidation of Cr Mo Si steel used in automobile gearbox during gas carburizing
With the increasingly strict global regulations on carbon dioxide emissions and fuel consumption efficiency, automobile powertrain systems become more compact
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Analysis of micro torsional vibration mechanism of gear shoulder under complex working condition
In the gear transmission mechanism of complex power equipment, the gear shaft and the bearing are assembled by interference, so
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Heat treatment of motorcycle gear
Normalizing treatment Normalizing is a heat treatment process in which the steel is heated to 30 ~ 50 ℃ or
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Research on the way to solve the knock of automobile transmission gear
At present, the transmission knocking noise is mainly solved in the following ways (see Table 2): from the aspect of
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Research on the knock dynamics of automobile transmission gears
With the rapid development of the automobile industry, automobile users have higher and higher requirements for the comfort of automobile
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Analysis of the thermal characteristic simulation results of the gear shaft shoulder
Because the bearing and gear of the gear transmission mechanism will produce a lot of heat in the process of
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Selection of motorcycle gear materials
Gear is one of the most widely used components in mechanical transmission system. Its main function is to transfer power
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Analysis of the factors influencing the contact stress of gear shaft shoulder
The load conditions of the gear assembly mainly include three aspects: the pre tightening torque applied on the tightening nut,
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Numerical simulation analysis of fretting characteristics of gear shaft
The equivalent stress distribution of the gear assembly and the gear shaft is shown. It can be seen from the
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Contact fatigue analysis of carburized helical gear
1.Finite element modeling of helical gear The basic idea of establishing carburized helical gear under ANSYS is to first establish
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The tooth surface equation of profile generating rack of variable tooth thickness helical gear
1.Normal profile of profile rack The variable tooth thickness helical gear is generated by the envelope of the generating rack.
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Modeling of gear components under complex working conditions
In the finite element method, the continuum structure is considered to be composed of finite elements connected by finite nodes.
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Theory of gear shaft fretting diagram in transmission system
The running state of fretting wear is not only related to the yield strength, material rigidity, elastic modulus and elastic-plastic
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Worm cutter cutting and grinding gear
Due to the low efficiency and precision of gear shaping, which can only cut the soft tooth surface gear, it
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Design and transmission performance analysis of circular arc tooth line cylindrical gear reducer
There are many problems in traditional reducers, such as large volume, high quality, low efficiency and high noise when the
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Load distribution between traction gears of locomotive based on meshing stiffness
For the gears whose coincidence degree is between (1 ~ 2), the meshing process is always in the alternating meshing
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Three body theory of gear shaft fretting wear in transmission system
According to the three body theory of fretting wear, the formation and evolution of wear debris are produced simultaneously and
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Three dimensional modeling of circular arc gear and reducer
According to the forming principle of the circular arc tooth line cylindrical gear, in theory, the circular arc tooth line
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Stiffness calculation of locomotive traction gear based on meshing stiffness
According to the definition of gear stiffness: It can be seen that the deformation of gear teeth has a linear
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The gear shaft of transmission system is one of the most important components of power transmission in complex power equipment
The gear shaft of the transmission system is one of the most important components of power transmission in the complex
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Early theory of gear shaft fretting wear in transmission system
Fretting refers to the micro relative motion of the closely matched contact surface in the mechanical parts under the action
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The main reason of torsional vibration instability of gear transmission shaft of rotating machinery
(1) The transmission system of rotating machinery produces torsional vibration when it bears impact load. The main transmission system of
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Development prospect of gear hobbing technology
With the rapid development of information technology and material technology, many new technological achievements have appeared in the field of
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Transmission error of hypoid gear under small load
It can be seen from the calculation model of gear mesh stiffness that before calculating the gear mesh stiffness under
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Principle of electronic gearbox
The “electronic gearbox” was put forward by the British in the s. The purpose is to replace the mechanical transmission
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Research on the difficulties and key technologies of Hobbing
For a long time, short life, poor reliability and heavy structure have become the three major problems restricting the development
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The influence of the blank shape on the height and pitch of the workpiece in the process of cross wedge rolling
The influence of billets on the forming of rolled pieces is studied. The rolling experiments are carried out on the
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Contact test experiment of face gear
1. Face gear tooth surface contact detection machine According to the parameters of the face gear, the corresponding face gear
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Semi digital and full digital control of gear shaping
Semi digital control of spiral gear shaping The so-called semi digital control refers to the use of digital differential chain
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Experimental study on forming process parameters of cross wedge rolling helical gear shaft
All kinds of helical gear shafts are components that transmit motion and power, and are used in many mechanical or
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Contact simulation of face gear
1. Meshing parameters of face gear The meshing parameters of face gear are: modulus M = 5, pressure angle
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Research on CNC machining of spiral bevel gear shaping
With the development of electronic technology, computer control technology and numerical control technology, the full digital control of gear shaping
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The influence of die helix angle on workpiece during cross wedge rolling
The helix angle of the forming section of the three working conditions is different. The B2 blank in Table 1
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Modification of long gear shaft machined by gear hobbing machine
Gear shaft and spline shaft are common parts in mechanical equipment. In the mechanical equipment of metal processing, gear hobbing
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Fracture analysis of 40Cr steel gear shaft
40Cr steel gear shaft is the transmission part of small mechanical equipment. Because the gear shaft must bear large torque