Vibration response of high speed helical gear drive under meshing impact excitation
In order to study the vibration characteristics of the system under separate excitation of meshing impact, the meshing impact curve […]
Scientific
Scientific
Vibration Response of High Speed Helical Gear Transmission Excited by Time varying Meshing Stiffness
Input the obtained time-varying meshing stiffness curve into the dynamic equations, obtain the vibration response of single-stage helical gear transmission […]
Scientific
Vibration Characteristics of High Speed Helical Gear Transmission Excited by Time Varying Meshing Stiffness
The calculated vibration accelerations in all directions of the helical gear are combined into “relative vibration accelerations a in the […]
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Precision Casting Technology for Automobile Castings
The precision casting forming technology of automobile castings refers to a kind of casting forming method. The castings produced by […]
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Analysis Conclusion of Wind Resistance Power Loss of Aviation Spiral Bevel Gear Pair
The windage power loss of aviation spiral bevel gear pair can be concluded through simulation analysis: 1) For the spiral […]
Scientific
Wind resistance power loss of spiral bevel gear pair
Figure 1 shows the pressure cloud diagram of the driven gear tooth surface. The pressure P is in MPa. It […]
Scientific
Wind resistance power loss result of spiral bevel gear pair
The numerical simulation results are shown in Table 1 and Table 2. Test No. Gap/mm Opening/(°) Wind resistance torque of […]
Scientific
Simulation of wind resistance power loss of spiral bevel gear pair
1. Simulation scheme design The numerical simulation calculation is carried out in two parts, one is the gearbox configuration without […]
Scientific
Model Solution Setting of Spiral Bevel Gear Pair
The model is solved with Fluent software, and the mesh file is imported into Fluent to set the boundary conditions; […]
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Technology in gear machining
Based on the development of control technology, the development speed of manufacturing industry has also been greatly improved to a […]
Scientific
Turbulence model equation of spiral bevel gear pair
1) Fluid Reynolds number calculation Where, v is the characteristic velocity of the flow field, in m/s; L is the […]
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Profile modification and vibration reduction of helical gear of electric vehicle reduction box
Based on the multi-body dynamics, statics and acoustics of the reduction box and gear system of the electric vehicle, the […]
Scientific
Basic governing equations of spiral bevel gear pair in fluid domain
The spiral bevel gear pair involved in the calculation is placed in a given reduction gearbox. If the wind shield […]
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Profile modification, vibration reduction and noise reduction of helical gear of electric vehicle reduction box
(1) At present, domestic and foreign research on the helical gear modification technology is almost concentrated on the simultaneous tooth […]
Scientific
Influence of optimal modification of addendum involute of long tooth profile on time-varying meshing stiffness and time-varying meshing force of helical gears
The optimal modification scheme of the addendum involute of the long tooth profile is the modification amount of the driving […]
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Preliminary optimization, modification and meshing contact analysis of helical gear pair in electric vehicle reduction box
Taking the helical gear pair of a reduction box of an electric vehicle as the research object, the influence of […]
Scientific
Influence of optimal modification of addendum arc of long tooth profile on time-varying meshing stiffness and time-varying meshing force of helical gears
The optimal modification scheme of the addendum arc of the long tooth profile is 5% of the modification amount of […]
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Influence of optimized profile modification on power loss of helical gear pair
Wu Luji believes that the power loss directly determines the transmission performance of the helical gear, so it is necessary […]
Scientific
Influence of optimized modification on sliding coefficient of helical gear pair
The sliding coefficient is an important parameter to measure the relative sliding degree between the tooth surfaces of the meshing […]
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Influence of optimized profile modification on transmission efficiency of helical gear pair
It can be seen from the figure that the efficiency of helical gear transmission after the optimization and modification of […]
Scientific
Compound modification scheme of helical gear
In order to further reduce the transmission error of the helical gear pair, it is necessary to consider the composite […]
Scientific
Optimization Analysis of Helical Gear Drum Modification Scheme
Figures 1, 2 and 3 respectively show the simultaneous tooth drum modification of wheel and pinion gears, the drum modification […]
Scientific
Influence of pinion tooth width on meshing performance of helical gear pair
(1) Influence of pinion tooth width on transmission error of helical gear Figure 1 shows the relationship curve between pinion […]
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Gearbox efficiency of electric vehicle wheel drive system
At present, most of the cars produced and sold on the market are traditional fuel vehicles. Fuel cars bring many […]
Scientific
Influence of gear width on meshing performance of helical gear pair
(1) Influence of gear width on transmission error of helical gear Figure 1 shows the curve of the relationship between […]
Scientific
Influence of helix angle on meshing performance of helical gear pair
(1) Influence of helix angle on transmission error of helical gears Figure 1 shows the relationship curve between the helix […]
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Planetary gear wheel reducer of electric vehicle
The most prominent feature of planetary gear transmission is to change the fixed axis transmission of ordinary gear transmission to […]
Scientific
Helical gear pair check
1. Meshing interference inspection KISSsoft software can mark the contact point of the tooth surface of two gears in the […]
Scientific
Establishment of Helical Gear Pair Model for Electric Vehicle Reduction Box
1. Helical gear material selection Helical gear materials can be roughly divided into four categories, such as Q235, Q275, 45 […]
Scientific
Solution of Herringbone Gear Meshing Stiffness by Finite Element Method
When Abaqus is used to simulate the meshing stiffness of herringbone gear, the calculation accuracy is affected by the increased […]
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Dynamic load of high-speed helical gear of electric vehicle based on dynamic model of motor
With the increasingly serious energy and environmental problems, new energy vehicles have attracted much attention. With its advantages of zero […]
Scientific
Evaluation of experimental model of herringbone gear symmetry deviation
In order to evaluate the accuracy of the model, the measured results of herringbone gear at 1000r · min ^ […]
Scientific
Symmetry deviation of herringbone gear
Herringbone gear is composed of two helical gears with equal helix angle and opposite direction. If the tooth surfaces on […]
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Application effect of heavy gear of shearer rocker arm
In order to verify the actual effect of domestic R&D and manufacturing of heavy gears, Shendong Coal Group Co., Ltd. […]
Scientific
Basic parameters of planetary gear transmission system
In the research of planetary gear transmission system, the module selection range is usually 1-50 mm. Because the small module […]
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Quality control of heavy gear of shearer rocker arm
The whole process of heavy gear processing shall strictly control the quality and make tracking records, and must be tested […]
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Dynamic temperature field of planetary gear transmission system
As an important part of wind turbine, planetary gear transmission system has the advantages of compact structure, strong bearing capacity, […]
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Calculation and optimization design of heavy gear parameters of shearer rocker arm
By using the professional heavy gear simulation analysis software, combined with the actual measurement parameters and working condition parameters, the […]
Scientific
Raw material characteristics of imported shearer rocker gear
The gear material was sampled, and its chemical composition was analyzed by three testing institutions. The chemical composition index was […]
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Analysis of Idler Gear Working Condition of Rocker Arm Gear Drive of Imported Shearer
The transmission system of the cutting section (hereinafter referred to as the rocker arm) of the imported 6C shearer of […]
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Gear failure of shearer cutting unit based on deep learning
At present, the common mining method in coal mine production is the comprehensive mining method mainly based on mechanized mining. […]
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Research on on-line detection method of helical gear helix angle based on machine vision
Through MATLAB simulation, the uniqueness of the helical gear side profile shape is verified, the helical gear rotation direction is […]
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Experimental comparison of on-line helical angle detection of helical gears based on machine vision
There is still a certain gap between the accuracy of this method and that of contact measurement. The main reasons […]
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On line detection of helical angle of helical gear based on machine vision
Helical gears are widely used in engineering. Compared with straight gears, helical gears have the advantages of smooth operation, high […]
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Machining of bevel gear with high reduction ratio by surface synthesis
Power density and efficiency have always been the main goals pursued in the field of mechanical transmission, among which gear […]
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Digital design of transmission system of reducer
It is a long and tedious process to calculate the parameters of involute gear transmission system in reducer design. In […]
Scientific
Influence of contact force on temperature of helical gear tooth surface
In order to study the influence of temperature on the contact force of helical gear tooth surface, the tooth surface […]
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Tool shifting of automobile gear hobbing
The amount of channeling should be based on the maximum allowable wear of hobs. Firstly, the allowable gear hobbing channeling […]
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High order contact analysis method for spiral bevel gears based on ease-off
Based on ease-off theory, a high-order contact analysis method for spiral bevel gear tooth surface is proposed. Compared with previous […]
Scientific
Influence of helical gear tooth surface friction
The friction coefficient of tooth surface in helical gear meshing is f ≤ 0 2. Combined with the relevant research […]
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Gear hobbing tool shifting method for automobile gear
The gear hobbing and tool shifting on the gear hobbing machine can be completed by manual operation or automatic control […]
Scientific
Influence of helical gear tooth plastic deformation
Based on the elastic-plastic model, the tooth surface contact force of helical gear under different loads (400, 1000, 1500, 2000N […]
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Shifting of automobile gear hob
The purpose of tool shifting of automobile gear hob is to make all teeth of hob have about the same […]
Scientific
Contact analysis of helical gear teeth
The heating flow density is applied to the meshing contact helical gear tooth surface, and the convective heat transfer coefficient […]
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Calibration of automobile gear hob
Most of the inherent accuracy of the gear hob can be destroyed. Therefore, if the tolerance of tooth profile is […]
Scientific
Contact analysis of helical gear tooth elastic model
The elastic and elastoplastic models can be obtained by inputting two different strain curves. Among them, the elastic model only […]
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Calibration of automobile gear hob
Most of the inherent accuracy of the gear hob can be destroyed. Therefore, if the tolerance of tooth profile is […]
Scientific
Deviation analysis of parametric modeling for reverse measurement of double circular arc gears
The sources of gear errors are as follows: machining deviation, measurement deviation and wear deviation. In terms of machining, the […]
Scientific
3D modeling of helical gear
By combining the basic involute equation with the involute in the gear machining coordinate system, the involute curve equation of […]
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Backlash of automobile gear and gear hob
In general, the tooth side clearance of automobile gear is switched with the matching wheel. It only happens when the […]