Pitch curve of noncircular gear
Noncircular gear can realize variable speed transmission between two shafts. It is a variable speed mechanism with superior transmission characteristics. […]
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Dynamics of helical gear transmission system of hybrid electric vehicle
The helical gear transmission system of hybrid electric vehicle is composed of compound planetary gear mechanism and parallel shaft gear […]
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Dynamic characteristics of bevel gear transmission system of hybrid electric vehicle
The solution method of the natural frequency of the system is introduced, and the natural frequency of the bevel gear […]
Scientific
Influence of time-varying meshing stiffness and meshing phase on dynamic characteristics of planetary gears
There are three cases for the influence of tooth surface contact phase angle on parameter excitation intensity: the first case, […]
Scientific
Analysis of simulation results of coupling dynamic model of helical gear modification and friction excitation
Based on the 8-DOF coupling dynamic model of helical gear system, the Runge Kutta method is used to solve the […]
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Causes of crack defects in aviation fuel pump gear
1. Influence of parts on cyanidation process Due to the need of infiltration layer, the gear parts of this type […]
Scientific
Total meshing stiffness of automobile helical gear
In the helical gear transmission of hybrid electric vehicle, although the rolling motion conditions are considered in the tooth surface […]
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Exploring the Durability and Strength of Worm Gear in Heavy Machinery
The durability and strength of worm gear in heavy machinery are critical aspects that determine the performance and longevity of […]
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Common problems of helical gear reducer
1.Common problems and causes of helical gear reducer: a. Heating and oil leakage of reducer; b. Worm gear wear; c. […]
Scientific
Test results of grinding residual stress of bevel gear steel
In 1997, Professor Wang Xibin of Beijing University of technology conducted an experimental study on the grinding surface residual stress […]
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Improvement of grinding surface performance of spiral bevel gear
There are still many contents to be discussed and improved in the field of grinding surface integrity of spiral bevel […]
Scientific
Comprehensive meshing error of automobile planetary gear
The meshing error of gear teeth mainly comes from the error caused by gear processing and installation. Machining error mainly […]
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Solid modeling of helical gear
In recent years, with the continuous research in the field of face gear, according to the axis relationship of transmission […]
Scientific
Modeling of automotive planetary gear system
The planetary gear transmission system of hybrid electric vehicle studied is composed of composite planetary gear mechanism and parallel axis […]
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Gear transmission design criteria
Different failure forms of gear transmission are unlikely to occur simultaneously on a pair of gears, but they affect each […]
Scientific
Backlash of automobile cylindrical gear
In the cylindrical gear transmission system of hybrid electric vehicle, due to the need of lubrication and the manufacturing accuracy […]
Scientific
Influence of speed of spiral bevel gear on grinding force
Fixed grinding speed vs = 20.3 M / s, grinding depth AP = 50 μ m. The test is carried […]
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Grinding strengthening of spiral bevel gear steel 30CrMnTi
In view of the performance change of strengthening layer of gear steel 30CrMnTi material under dry grinding condition, through grinding […]
Scientific
Analysis of relative meshing displacement between large planetary gear and ring gear
The direction shown in the figure is positive, φ R is the included angle between the connecting line between the […]
Scientific
Simulation conditions and solution method of coupling dynamic model of helical gear modification and friction excitation
① Simulation conditions Based on the established 8-DOF coupling dynamic model of helical gear system, Runge Kutta method is used […]
Scientific
Relative meshing displacement of small sun gear and large planet gear
Take the direction shown in the figure as the positive direction, φ S1 is the angle between the connecting line […]
Scientific
Establishment of dynamic model of automobile gear transmission system
Using the lumped parameter method, fully consider the nonlinear factors in the gear transmission system, such as time-varying meshing stiffness, […]
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Basic theory of gear transmission dynamics
Most of the vibration and noise of the machine come from the vibration generated by the gear transmission system when […]
Scientific
Research on calculation method of helical gear meshing stiffness based on unit contact line length of helical gear end face
The dynamic excitation caused by the time-varying meshing comprehensive stiffness of helical gear system is one of the most important […]
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Research status of hybrid electric vehicle planetary gear transmission in China
Compared with foreign countries, China’s research on the dynamic characteristics of planetary gear train is not backward. Lu Jingjing of […]
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Causes of noise in gear transmission system
The vibration and noise of the gear transmission system are caused by the following aspects: (1) Gear design. The transmission […]
Scientific
Effect of grinding depth on residual stress of cylindrical gear steel
Fixed grinding speed vs = 20.3 M / s and cylindrical gear steel speed VW = 1200 m / min. […]
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Classification of helical gears
Helical gear reducer is a novel reduction transmission device. It has many advantages, such as small volume and light weight. […]
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Grinding surface performance of spiral bevel gear
The research status of grinding surface integrity of spiral bevel gear is deeply analyzed. Firstly, the basic experimental research of […]
Scientific
Orthogonal experiment of spiral bevel gear
The test mainly investigates the influence of the grinding process parameters of spiral bevel gear (grinding depth, grinding speed and […]
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Mechanism of vibration and noise in gear transmission system
In the hybrid drive mode, engine ice, large motor E2 and small motor E1 are in working state, while the […]
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30CrMnTi grinding of spiral bevel gear of heavy vehicle
The spiral bevel gear of heavy vehicles generally adopts high-strength alloy steel such as 30CrMnTi. This kind of steel is […]
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Polishing and grinding method of automobile helical gear drum and abrasive flow machining technology
Barrel grinding can improve the tooth surface roughness and the fatigue life of automotive helical gears under certain conditions, and […]
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Analysis of gear transmission working mode of hybrid electric vehicle
In order to meet the requirements of the power split working mode, the engine ice is connected to the planet […]
Scientific
Analysis of tooth surface roughness of spiral bevel gear
Surface roughness is not only the most important index to measure the surface morphology, but also an important standard to […]
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Failure form of gear transmission
Gear transmission works by the meshing of teeth, and the gear tooth is the part of the gear directly involved […]
Scientific
Influence of grinding depth on grinding force of spiral bevel gear
The fixed grinding speed vs = 20.3 M / s and the spiral bevel gear speed VW = 1200 mm […]
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Gear transmission system of hybrid electric vehicle
The compound planetary gear mechanism in the gear transmission system of hybrid electric vehicle is the key of the compound […]
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Research on hobbing of helical gear
The solid modeling of helical gear tooth surface generation is carried out, and the gear meshing analysis, machining method and […]
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Research status of hybrid electric vehicle planetary gear transmission abroad
Foreign scholars have made some achievements in the research on the dynamic characteristics of planetary gear system. Kahraman initially established […]
Scientific
Calculation results of time-varying friction excitation of helical gear
The calculation program of friction force and friction torque is compiled by MATLAB software. The total comprehensive contact line length […]
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Helical gear transmission of hybrid electric vehicle
The dynamic characteristics of the helical gear transmission system of a new compound power split hybrid electric vehicle of a […]
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Hybrid electric vehicle planetary gear transmission
At present, the most representative hybrid electric vehicles are Toyota hybrid electric vehicle and general dual-mode hybrid electric vehicle. However, […]
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Development of hybrid electric vehicles
Hybrid power system refers to more than two power sources with different working principles, which are matched together to make […]
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Advantages and disadvantages of helical gear
Advantages: (1) Good meshing performance: the meshing process between helical cylindrical gear teeth is an excessive process, and the force […]
Scientific
Simulation results of grinding stress field of bevel gear steel
With grinding speed vs = 20.3 M / s and grinding depth AP = 50 μ m. The speed of […]
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Grinding surface integrity technology of spiral bevel gear
The grinding test of spiral bevel gear on gleason-600g CNC gear grinding machine is designed. Firstly, the surface morphology of […]
Scientific
Analysis of residual stress on grinding surface of spiral bevel gear
The influence of different grinding parameters of gear steel materials on the surface residual stress has been discussed in detail. […]
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Surface grinding performance of spiral bevel gear 30CrMnTi
(1) Experimental study on basic grinding of gear steel 30CrMnTi Referring to the actual processing conditions of spiral bevel gear, […]
Scientific
Spraying technology of ultra-fine composite materials for automobile gears
In recent years, companies in Japan and Taiwan have studied and applied the spraying technology of composite materials containing MoS2 […]
Scientific
Analysis of grinding surface topography of spiral bevel gear
After the spiral bevel gear is processed under given grinding conditions, the tooth surface has no obvious defects such as […]
Scientific
Influence of grinding speed on grinding force of spiral bevel gear
Fixed spiral bevel gear speed VW = 1200 mm / min, grinding depth AP = 50 μ m. The test […]
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Innovation in hobbing of helical gear
The research on the machining method of face gear is an important part of the research on face gear transmission […]
Scientific
Grinding process parameters of spiral bevel gear
The grinding parameters of spiral bevel gear arranged by single factor test are shown in the table. Parameters Value Grinding […]
Scientific
Processing technology of spiral bevel gear
Before grinding the spiral bevel gear used for the test, ensure the same machining process and its machining process as […]
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Surface integrity and process optimization of spiral bevel gear grinding
Based on the accumulated Basic test data of surface grinding, the actual grinding test of spiral bevel gear on NC […]
Scientific
Effect of grinding parameters on surface microhardness of spiral bevel gear steel
The microhardness of workpiece grinding surface corresponding to different grinding speed and grinding depth of spiral bevel gear steel is […]
Scientific
Effect of grinding cooling mode on residual stress of cylindrical gear steel
This paper studies the strengthening effect of cylindrical gear steel grinding on the surface properties of 30crmnti material. The main […]
Scientific
Analysis of micro hardness mechanism of grinding surface of spiral bevel gear steel
In the process of meshing transmission of spiral bevel gear, the surfaces of two teeth often need to contact and […]
Scientific
Calculation of time-varying friction torque of helical gear
According to the previous analysis, the friction perpendicular to the meshing line will cause the friction torque around the rotation […]