Compact tensile test material of 42CrMo steel for low speed and heavy load gear
42CrMo steel is a kind of ultra-high strength steel, which has strong resistance to plastic deformation, less possibility of brittle […]
Scientific
News
Simulation design of tractor gear based on ADAMS
The modeling of Pro / E software is based on the characteristics of 3D model, and it can also carry […]
News
Carburizing and quenching process of low speed and heavy duty gear
There are three ways to improve the bearing capacity of gears, namely, ① improving the structure of reducer, such as […]
Scientific
Local eddy current and worst speed of low speed and heavy load gears
The existence of the worst speed in the boundary lubricated gears has not been discussed in the literature. There is […]
Scientific
Dynamic model of planetary gear transmission system with sun gear failure
1. Physical model Take 2K-H Planetary gear transmission system as the analysis object, as shown in Fig. 1 (a). The […]
News
Study on dynamic characteristics of gear fatigue pitting
From the engineering point of view, through the establishment of mathematical models and contact fatigue test platform under different physical […]
Scientific
Wear law of low speed and heavy load gears
It is known from the test results that for the low-speed and heavy-duty lubricated gears with circumferential velocity v = […]
News
Gear system model and dynamic response analysis under pitting corrosion
By establishing a simplified six degree of freedom dynamic mathematical model of gear system and a rigid body dynamic analysis […]
Scientific
Research on wear test method of low speed and heavy load gear
The tests were carried out on the modified CL-100 gear testing machine. The schematic diagram of the testing machine is […]
News
Analysis on crack propagation of internal meshing modified gear
According to the calculated stress intensity factors, the results of stress intensity factor analysis show that ki is the largest, […]
News
Application of improved entropy feature in planetary gear crack fault identification
Due to the bad working environment of a tank planetary gearbox, the gear is prone to crack and other faults. […]
News
Derivation and application of gear meshing stiffness model under pitting characteristics
The shape of pitting pits on tooth surface is simulated quickly and approximately by using rectangular geometry. The mathematical models […]
Scientific
Technological requirements for developing deep carburizing heavy duty gears
The carburizing layer of large low-speed and heavy-duty gears is deep, and the surface carbon concentration is low. The carburizing […]
Scientific
Transmission structure and noncircular gear design
The transmission ratio of non-circular gear can be changed according to the established motion law. Compared with the connecting rod, […]
Scientific
Mechanical performance test of engine starting motor drive gear
1. Hardness layer depth detection The results show that the surface hardness is 56-60hrc, the core hardness is 40-42hrc, and […]
News
Research and application of time varying meshing stiffness of gear under macro / micro interface characteristics
Considering the macro interface friction coefficient, the load component equation along the tooth profile direction is derived, and the mathematical […]
Scientific
Carburizing and quenching process of low speed and heavy duty gear
1.Technical Requirements 20grni2moa steel material, module M = 6, number of teeth z = 38, width of teeth H = […]
News
Derivation and application of refined gear time varying meshing stiffness model
“Innovation, coordination, green, open and sharing” are the five core supporting development concepts to promote the green transformation of traditional […]
Scientific
Load distribution coefficient model of involute spur gear at low speed
When involute spur gear works, it has to go through the process of single tooth meshing and double tooth meshing […]
Scientific
Response characteristics of gear meshing force under fatigue pitting
According to the advanced slicing function of gear modeling along the tooth width direction, the gear is sliced during gear […]
Scientific
Response characteristics of time varying meshing stiffness of gears
According to the motion relationship of gearbox transmission system and the advanced parameter modeling method of gear, bearing and other […]
News
Comparison and summary of fatigue pitting test results of spur gears
In order to better reflect the effect of the test gear on the dynamic response characteristics of the system due […]
News
Fatigue pitting characteristics of spur gear in fatigue pitting test
Figure 1 shows the measurement curve of tooth profile deviation of aa-1 gear after fatigue pitting. The measurement results show […]
Scientific
Characteristic response of fatigue pitting corrosion on tooth surface of gear transmission system
According to the above research on the time-varying meshing stiffness of gears with pitting features, the periodic stiffness curve with […]
News
Measurement data and response characteristics of fatigue pitting corrosion test for 8 million cycles spur gear
Figure 1 shows the measurement curve of tooth profile deviation of aa-1 gear after 8 million times of operation. The […]
Scientific
Damping ratio of fatigue non pitting characteristic response of gear transmission system
The displacement response of driving gear xp under different damping ratios (ζ = 0, 0.05, 0.10, 0.15) is plotted in […]
News
Measurement data and response characteristics of fatigue pitting corrosion test for spur gears with six million cycles
Figure 1 shows the profile deviation measurement curve of aa-1 gear working tooth surface (left tooth surface) after running for […]
Scientific
System parameters of dynamic model of gear transmission
Taking the basic parameters of gear pair 1 as an example, it is difficult to use regular geometric algorithm to […]
Scientific
Study on Meshing Stiffness of Random Distribution Pitting of Gear Transmission System
Micro pitting can be regarded as the precursor of the occurrence of early pitting characteristics, and its geometric characteristics are […]
News
Measurement data and response characteristics of fatigue pitting corrosion test for spur gears with 4 million cycles
Figure 1 shows the profile deviation measurement curve of aa-1 gear working tooth surface (left tooth surface) after running for […]
Scientific
Research on meshing stiffness of gear transmission system with randomly distributed pitting corrosion
According to the randomness of the pitting formation area, the pitting physical model under the random distribution shown in Figure […]
News
Results of original measurement data in fatigue pitting test of spur gear
First of all, the professional D80 gear measuring and Testing Center (Figure 1) is used to measure the accuracy of […]
Scientific
Multi pitting corrosion model of gear transmission system along tooth width direction
For as shown in figure 1 (b) along tooth width direction more corrosion characteristics of the model, select the multipoint […]
News
Data acquisition and measurement method for fatigue pitting test of spur gear
The main data acquisition method of cylindrical gear fatigue test-bed is to collect and record the data through the real-time […]
News
Summary of fatigue pitting test bench for spur gears
It is a very complicated and random process that gear evolves from the healthy state of tooth surface to fatigue […]
Scientific
Multi-point erosion model of gear transmission system along tooth profile direction
For as shown in figure 1 (a) along the direction of the tooth profile of multipoint corrosion characteristic model, selecting […]
Scientific
Multi-point erosion model of gear transmission system
The multi-point erosion model can be mainly divided into the direction along the tooth profile and the direction along the […]
News
Research on dynamic response of gear system pitting based on rigid body dynamics
Based on the theory of rigid body dynamics, the rigid body analysis model of pitting dynamics of gear system is […]
Scientific
Calculation and Discussion on meshing stiffness of gear transmission system with single pitting
According to the schematic diagram of pitting section in Figure 1, the section at the node is selected to study […]
News
Gear model and coupling force element characteristics
Gear is the key part of gearbox system, so it is very important to establish the coupling force element between […]
Scientific
Single pitting model of gear transmission system
According to the characteristics of pitting metal shedding, the most intuitive performance after pitting is that the width of meshing […]
News
Dynamic model of gear system
According to the rigid body multi-body dynamic motion analysis theory and modeling ideas, the single-stage gearbox can be dissected and […]
Scientific
Analysis of normal contact stiffness of gear transmission system
According to the measured data and theoretical calculation analysis of surface micro topography roughness of machining parts, the approximate relationship […]
News
Response characteristics of gear pitting dynamics simplified model
A simplified six degree of freedom dynamic mathematical model of gear system is established to study the dynamic response characteristics […]
Scientific
Normal load and normal contact stiffness model of gear transmission system with rough tooth surface
Let A1 be the contact area of the largest single asperity, and the contact of the tooth surface can be […]
Scientific
Simulation calculation and result analysis of involute spur gear wear
In order to verify the simulation model, the minimum oil film thickness is far less than the root mean square […]
News
Time-varying meshing stiffness analysis of gear under fatigue pitting corrosion
By referring to the physical causes of fatigue pitting on tooth surface and the characteristics of pitting pits, different mesh […]
Scientific
Physical and chemical detection and analysis of fracture cause of engine starter motor drive gear
1.Fracture morphology analysis 1.1 macroscopic observation of fracture The three teeth of the driving gear of the starting motor are […]
Scientific
Friction simulation analysis of meshing stiffness of gear transmission system
The basic parameters of gear pair 2 are selected to calculate and analyze the time-varying meshing stiffness with friction effect. […]
News
Overview of fatigue pitting of gears
According to the causes of pitting, pitting is a phenomenon of surface metal falling off under the action of cyclic […]
News
Influence of interface characteristics of gear transmission on time-varying meshing stiffness
By introducing the effect of interface characteristics (such as friction, rough surface, etc.) between gears, the comprehensive time-varying stiffness of […]
Scientific
Simulation and discussion of time-varying meshing stiffness of finite element gear pair
The quasi-static calculation method is adopted in the finite element simulation calculation, that is, the stiffness under the load at […]
Scientific
Basic wear model of involute spur gear
In the meshing process of gear pair, the relative sliding and rolling occurs between the meshing tooth surfaces, which causes […]
News
Calculation of tooth surface adhesion wear of involute spur gear under low speed condition
Adhesive wear is the most common fault type on the working surface of mechanical system, which often occurs on the […]
News
Specific control measures of gear heat treatment deformation
Gear deformation is affected by many factors. In order to effectively avoid tooth shape deformation during heat treatment and reduce […]
Scientific
Calculation and analysis of comprehensive time-varying meshing stiffness
According to the two models of contact stiffness calculation, the following are calculated and discussed respectively. Firstly, according to the […]
News
Analysis of time varying meshing stiffness of gears in ideal state
Based on the theory of gear kinematics and energy method, a high-precision modeling method for calculating the time-varying meshing stiffness […]
News
Study on dynamics of gear transmission system under fatigue pitting of tooth surface
Combined with the research results of earlier scholars at home and abroad, and aiming at the relevant research points and […]
Scientific
Measurement of involute profile error of helical gear
The measurement can be divided into two cases: the measurement of the profile error of the end face on the […]
Scientific
Calculation and analysis of stiffness of meshing contact matrix of gear tooth surface
As one of the important components of gear stiffness, it is very important to calculate the matrix stiffness reasonably and […]