Pitch curve and transmission ratio of reducer variable speed integrated gear
The reducer variable speed integrated gear is a new type of gear mechanism, which is composed of ordinary involute cylindrical […]
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Robustness analysis of gear modification
Robustness is also known as robustness. For gear modification, it is to ensure that the optimal modification scheme has stable […]
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Chemical Composition Analysis of Coal Mill Gear Material
A more detailed chemical composition analysis of the gear material sent for inspection is performed based on the spectral analysis […]
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Dynamic simulation of gear transmission under different factors
Based on the actual engineering application, the dynamic characteristics of gear transmission system and the methods of vibration reduction and […]
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Gear backlash and its smoothing
Gear backlash is the amount of circumferential shaking of another gear when one gear is fixed, which is calculated by […]
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Energy Spectrum Analysis of Coal Mill Gear
Electron spectroscopy is a common method for analyzing surface components of materials.The root surface near the fracture source and the […]
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Analysis on Main Factors of Gear Beating
The knocking dynamics of the vehicle transmission includes two aspects: one is the knocking in neutral, i.e. the knocking produced […]
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Vibration excitation and signal model of gear engagement
Transmission error is the main excitation of gear vibration. It combines the influence of meshing time-varying stiffness and manufacturing error, […]
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Optimization target setting of gear modification parameters based on genetic algorithm
For the set optimization objective, that is, the minimum peak peak te optimization of transmission error, it is not known […]
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The establishment of the analysis model of gear mesh excitation modulation sideband frequency
In the development of planetary gear drive, it is found that there is obvious noise in the bench test of […]
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Microscopic morphology analysis of coal mill gear
The fracture specimens were cut at the gear break and cleaned several times, then the fracture morphology was analyzed.The micro-morphology […]
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The dynamic load on the gear system of the vehicle
The maximum dynamic meshing force and the dynamic load coefficient of the loaded gear are analyzed respectively. They can provide […]
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Optimization evaluation group of gear modification parameters based on genetic algorithm
1) Decoding According to the encoding mode, the chromosome bit string is decoded to obtain the shape modification quantity is, […]
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External excitation load of vehicle gear transmission system
The external excitation load of vehicle gear transmission system mainly includes engine input torque and load torque. The engine of […]
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Optimization of gear modification parameters based on genetic algorithm
① Gene coding of modification parameters Four modification parameters of driving gear are defined as tooth height deflection (is δ), […]
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Dynamic bearing force of coupling model of gear transmission
The dynamic bearing force is an important parameter in the dynamic response. The dynamic characteristics of the gear system are […]
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Dynamic Inherent Mode Analysis of Gear Drive Coupling Model
In the established five-gear manual transmission model, there is coupling of finite element model, and the number of degrees of […]
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Dynamic Characteristic of Gear Drive Error Excitation Stiffness Matrix of Rolling Bearing
The stiffness matrix of the rolling bearing connects the relative displacement and deflection of the inner raceway to the center […]
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Hardness Test of Coal Mill Gear
Rockwell hardness tests were carried out on the surface and center of the intermediate shaft sun wheel at different points. […]
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Dynamic Modal Compliance Analysis of Gear Drive Coupling Model
Modal flexibility is the degree to which a modal frequency of the system is easily excited by the transmission error […]
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Dynamic Characteristics of Gear Drive Error Excitation Calculation Method of Gear Drive Error
There are several calculation methods for gear drive errors, including finite element method and empirical analysis method.The transmission error obtained […]
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Analysis and discussion of experimental results on dynamic characteristics of gear friction excitation
(1) Comparison between simulation and experiment Figure 1 compares the acceleration simulation and experimental results of pinion end with obvious […]
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Optimization model for static performance of involute spur gears
(1) Design variables The design variables of static performance optimization model and dynamic performance optimization model are the same. (2) […]
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Dynamic Characteristic of Gear Drive Error Excitation Shafting Timoshenko Beam Unit
The establishment of dynamic simulation model is completed by RomaxDesigner.In the model, the shafting is treated as a Timoshenko beam […]
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Application of 6-DOF Dynamic Model in Gear Industry
Then the engagement force Np, Ng and friction force Fp, Fg can be expressed as: Where: lambda (t) is the […]
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Comparison of Dynamic Characteristics of Gears with Different Tooth Surfaces under Different Factor Excitation
The dynamic simulation is carried out by using Benedict amp; Kelly model and time-varying friction coefficients obtained in Figure 2.8 […]
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Dynamic performance optimization model of involute spur gear profile modification
Based on the dynamic and static characteristics, the optimization model of tooth profile modification is established, and the optimization design […]
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Comparison of Dynamic Characteristics of Different Friction Models of Gears Excited by Different Factors
First, the differences of gear dynamic characteristics with different friction models are discussed.Figures 1 and 2 show the time and […]
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Time-varying meshing stiffness and friction arm of gear driven by different factors
The fluctuation of gear meshing stiffness is an important excitation source for gear vibration. Accurate calculation of gear meshing stiffness […]
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6-DOF Gear Dynamics Model
In order to study the comprehensive influence of meshing force and friction force on tooth surface, a simplified dynamic model […]
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Gear engagement process analysis
Firstly, the engagement process of the gear is analyzed. The engagement state and force diagram of the gear is shown […]
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The influence of the modification quantity on the dynamic load of the involute spur gear under different modification types
Analyze the time-domain curve of meshing stiffness and meshing force of the gear under the optimal modification amount, and compare […]
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The influence of the modification quantity on the dynamic load of the involute spur gear under different modification types
The modification length is 2.8mm, the change range of modification amount is [0, 0.05mm], and the value interval is 0.02mm. […]
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Types of profile modification for involute spur gear drive system
There are many types of profile modification curves. According to the different functional forms of the modification quantity with respect […]
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Effect of Center Support Stiffness of Gear Drive System on Dynamic Load under Steady State Conditions
The center support stiffness is selected according to the allowable deflection of the drive shaft. The center support stiffness meets […]
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Impact test of coal mill gear
Cut and process the inspection gear along the axial direction and about 1/4 diameter into U-type impact test specimen, and […]
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Experimental results and data processing of shot peening on bending fatigue properties of gear materials
1. Group test results Data of fatigue test results obtained by group method of shot peened gear and non shot […]
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Test of shot peening on bending fatigue property of gear material
1. Test method The bending fatigue test fixture of gear material adopts the single tooth loading method shown in Figure […]
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Effect of shot peening on bending fatigue of gear material
Bending fatigue performance is an important index to evaluate the bearing capacity of gears. Shot peening is an effective way […]
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Comparison and Analysis of Different Dynamic Modes of Gear Drive System under Steady State Conditions
In the nonlinear dynamic model of yaw-torsion coupling, there are two main factors affecting the yaw vibration, i.e. the bias […]
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Metallographic Structure Analysis of Coal Mill Gear
Metallographic structure evaluation of failed gears is carried out according to national inspection standards.The metallographic observation is etched with 4% […]
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Effect of Tooth Tip Circular Radius of Spiral Bevel Gear on Tooth Root Bending
There are three aspects to consider when designing the tip radius: (1) No interference occurs in the running process of […]
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Tooth surface equation of bevel gear without backlash
Take the point on the center line as the coordinate origin, fix the base vectors of the coordinate systems S0 […]
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Effect of Variation of Tooth Thickness of Helical Bevel Gear on Stress of Gear Pair
Tooth thickness is an important parameter for balancing the fatigue life of large and small wheels.Since the number of small […]
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Research on Nonlinear Dynamics of Involute Spur Gear Drive System
Nonlinear dynamic model of yaw-torsion coupling was established for involute spur fixed-shaft gear drive and planetary gear drive respectively, and […]
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Design example of bevel gear tooth surface without backlash
Use CAD software to build accurate 3D model of linear bevel gear pair, as shown in the figure. By substituting […]
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Profile of bevel gears with concave convex contact surface without backlash
The tooth profile of the driving and driven section of the linear gear pair is shown in the figure. The […]
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Fatigue bearing capacity of helical bevel gears
Bending fracture of teeth and pitting and flaking of tooth surface are the two most common failure modes of main […]
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Research on Nonlinear Dynamics of Involute Spur Gear Drive System
Nonlinear dynamic model of yaw-torsion coupling was established for involute spur fixed-shaft gear drive and planetary gear drive respectively, and […]
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Analysis on the coincidence degree of bevel gears without backlash
The linear gear can also improve the transmission stability by increasing the degree of coincidence. The calculation formula of line […]
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Establishing conjugate contact line of bevel gear without backlash
Establish the right-hand coordinate system, as shown in Figure 1. S (o-xyz) and S (oxpypzp) are the main and driven […]
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Special testing principle of vibration of fixed-shaft gear drive system
(1) Acceleration signal testing principle A three-way acceleration sensor is installed at 180 degrees intervals on the same circumference of […]
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Research on Nonlinear Dynamics of Involute Spur Gear Drive System 2
Nonlinear dynamic model of yaw-torsion coupling was established for involute spur fixed-shaft gear drive and planetary gear drive respectively, and […]
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Optimization of tooth profile modification for helical gears to reduce impact of meshing
1 Construction of modified tooth surface The modified tooth surface is constructed by superposition of theoretical tooth surface and modified […]
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Innovation in Research on Nonlinear Dynamics of Involute Spur Gear Drive System
The innovations of the research work can be summarized as follows: (1) The coupling relationship between the acting direction of […]
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Research on Nonlinear Dynamics of Involute Spur Gear Drive System 1
Nonlinear dynamic model of yaw-torsion coupling was established for involute spur fixed-shaft gear drive and planetary gear drive respectively, and […]
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Calculation of Rolling Impact of Helical Gear
The calculation of impact force in this paper is based on the principle of energy conservation at the moment of […]
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Analysis on Dynamic Characteristics of Gears with Different Machining Dynamic Balance Accuracy
Balancing is a process that improves the mass distribution of the rotor to ensure that the vibration or vibration force […]
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Different gear machining accuracy of vehicle gear drive system
In theory, the higher the gear machining accuracy level, the better the dynamic performance of the gear drive system, but […]
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Dynamic Stress of Drive Shaft of Vehicle Gear Drive System
The bending and torsional vibration displacements of the concentrated mass points on each drive shaft obtained by simulation are taken […]