Material selection and technical requirements of spiral bevel gear
At present, the materials for spiral bevel gear are 20CrMnTi, 22CrMoH, etc. They are widely used in high-speed, medium or […]
News
Scientific
Time-varying meshing stiffness calculation of healthy gears
The potential energy method is used to solve the time-varying meshing stiffness of gears.Each tooth is considered as a variable […]
Scientific
Research on characteristics of gear knocking under no-load condition
To simulate the no-load knocking characteristics of gears, an angular acceleration excitation is applied in the torsional direction of the […]
News
Research on Dynamic Characteristics of Gear Drive System under No-load Conditions
No-load knocking of gears is one of the important sources of vehicle knocking noise. No-load knocking usually occurs in two […]
Scientific
Effect of Center Distance Deviation of Gear Drive System on Dynamic Load under Steady State Conditions
During machining and assembling of gear drive system, there is deviation between actual and theoretical center distance of gear due […]
Scientific
Effect of Engine Speed of Gear Drive System on Dynamic Load under Steady State Conditions
Under steady-state conditions, the engine speed range of heavy-duty vehicles studied ranges from 1000 r/min to 4200 r/min.Under full throttle […]
Scientific
Research on Dynamic Characteristics of Involute Spur Gear Drive System
Vibration characteristics of two-stage fixed-shaft gear drive system and single-stage planetary gear drive system were tested, and the correctness of […]
News
Standard tooth surface of the tooth-side contact point in the event of edge contact
In the figure, O1 and O2 are the rotation centers of large and small wheels, point D is the actual […]
News
Machining Analysis of Double Gear Shaft
With the rapid development of modern human scientific manufacturing technology, human beings began to use various scientific knowledge and manufacturing […]
Scientific
Modeling of gear drive system with cracks
The centralized parameter method is used to establish the dynamic model of gear transmission system.This method has a small amount […]
Scientific
Test device and system for vibration characteristics of planetary gear drive system
Taking single-stage planetary gear drive as test object, vibration characteristics test is carried out on the special test bench for […]
Scientific
Dynamic Model of Involute Spur Gear Drive System Fixed Shaft Gear Drive System
The bearings and gears are simplified as concentrated mass points and the rolling bearings are simplified as isotropic elastic supports.A […]
News
Calculation of Rolling Point Position of Modified Helical Gear
The key to calculate the impact force of rodent is to accurately locate the rodent point.Based on the position of […]
Scientific
Data Processing Method for Strain Signal of Involute Spur Gear Drive System
1.The cut-off frequency of low-pass filtering for strain test data is 3kHz of sampling frequency of dynamic strain gauge. 2.As […]
Scientific
Effect of Gear Modification Coefficient on Gear Slip Rate
To analyze the influence of gear displacement coefficient, it should be divided into equal displacement, unequal positive displacement and unequal […]
Scientific
Comparative analysis of torsional shear stress of involute spur gear
According to the test results of torsional shear strain of drive shaft, the torsional shear stress is calculated by formula […]
News
Optimized case of spiral bevel gear
1. Forms of Failure A hypoid gear pair is used to match medium truck, medium bus, medium empty cabinet tractor […]
Scientific
Effect of Helical Bevel Gear Cutter Modification on Tooth Root Bending Stress
In order to improve the bending strength of the small gear root, the heavy contact area is usually designed to […]
Scientific
Optimization of Spiral Bevel Gear Based on Tooth Height Factor
The tooth height coefficient of hypoid gear pair mainly includes working tooth height coefficient and tooth crest height coefficient, which […]
Scientific
Data Processing Method for Displacement Signal of Involute Spur Gear Drive System
The transverse displacement test principle of the drive shaft is shown in the figure.O-point is the center position of the […]
News
Optimization of fatigue carrying capacity of Spiral bevel gear pair
Spiral bevel gear pair is the main part affecting the performance of axle and vehicle. It is widely used because […]
Scientific
Comparison and analysis of vibration and displacement of involute spur gear drive
According to the test results of transverse vibration displacement of transmission, the displacement of axle in test direction is calculated […]
Scientific
Effect of Gear Modulus and Pressure Angle on Gear Slip Rate
Figure 1 shows the variation trend of sliding rate with gear modulus in standard drives with the number of teeth […]
News
Comparison and analysis of acceleration of involute spur gear drive
For acceleration, the main reasons for errors between simulation results and test results are as follows: 1.The parameters such as […]
Scientific
Comparison and analysis of acceleration of involute spur gear drive system
Torsional angular acceleration of gears 1 and 4 can be obtained by substituting acceleration test results of each gear into […]
Scientific
Data Processing for Nonlinear Dynamic Acceleration Signal of Involute Spur Gear Drive System
1.The acceleration test signal is filtered with low-pass filter whose cut-off frequency is 10kHz, the highest response frequency of the […]
News
Verification of Involute Harmonic Gear Flexible Wheel Finite Element Model
In order to verify the validity of the solid element finite element model in this paper, the stress results of […]
News
Selection of Blank for Helical Bevel Gear and Determination of Size and Accuracy
Blank type determination: In general, 20GrMnTi alloy steel is used for driving axle gears of automobiles and carburized and quenched.CA1092 […]
News
Operating conditions and performance requirements of helical bevel gears
Spiral bevel gears transmit power and change speed during working process. Rolling and sliding exist between the meshing tooth surfaces […]
Scientific
Contact relationship and stress distribution of flexible ring gear of Involute Harmonic Gear
Flexible ring gear is a spur cylindrical external gear, and the ring gear after assembly deformation presents straight bus deformation […]
News
Main functions of helical bevel gears in automobiles
1.Transfer the power output from the engine to the driving wheels via the transmission and the main drive. 2.Change the […]
News
Vibration characteristics test of fixed-shaft gear drive system
Vibration characteristics of two-stage fixed-shaft gear drive system were tested on a dynamic simulation test bench in the Key Laboratory […]
News
Calculation Method of Rolling Impact Force of Modified Helical Gear Based on Contact Analysis of Tooth Bearing
Calculation Method of Rolling Impact Force of Modified Helical Gear Based on Contact Analysis of Tooth Bearing Rolling impact can […]
News
Nonlinear dynamic engagement model of planetary gear drive
For involute spur fixed-shaft gear drive and planetary gear drive respectively, a non-linear dynamic engagement model including dynamic backlash and […]
Scientific
Involute Harmonic Gear Flexible Gear Profile Parameters
1. Basic profile parameters and definitions Taking the involute profile as an example, the figure is an illustration of the […]
Scientific
Nonlinear dynamic backlash and meshing stiffness of sun gear
The analysis process of the dynamic backlash of the outer meshing pair composed of the sun wheel and the star […]
Scientific
The dynamic boundary condition of the modification area of involute spur gear
If there is tooth profile modification, the dynamic boundary condition of the modification area should be added on the basis […]
Scientific
Centroid Position Vector and Engaging Force of Gear Pair
The dynamic center distance of a gear pair at any time is the modulus of the difference between the vector […]
News
Grinding and centering of double gear pairs
Centering of grinding teeth is the final procedure to ensure the accuracy of angular position of gears. Gear alignment accuracy […]
Scientific
Maximum circumferential stress of ring gear considering the influence of gear teeth
1. Maximum circumferential stress of ring gear in design specification Considering the influence of tooth parameters, load distortion of flexible […]
News
Current problems in the study of gear drive system dynamics
After nearly a hundred years of continuous exploration and research, the dynamics of gear transmission system has developed into a […]
News
Operation monitoring of wind power gearbox
The performance of the wind power system depends to a certain extent on the operation of the wind power gearbox. […]
Scientific
Engaging position of involute spur gear at any engagement teeth
In order to obtain the dynamic engagement stiffness in the process of gear transmission, besides determining the engagement positions, the […]
News
Rolling impact calculation conclusions for modified helical gears
(1) After tooth surface modification, under a small load, the clearance between the teeth of the latter pair is sufficient […]
Scientific
Example Analysis of Rolling Impact of Helical Gear
Figure 1 shows the calculation results of the load-dependent position of the rodent points on the standard and modified tooth […]
Scientific
Nonlinear dynamic meshing model of planetary gear drive
For the fixed shaft gear drive, the design parameters of each gear pair are different, the period of meshing stiffness […]
News
Rolling impact calculation of helical gear
Based on the proposed calculation method of meshing impact force, the optimum profile design of small gear tooth surface with […]
News
Assembly combination of double gear pairs
(1) The large gear is heated in the heating furnace. The heating temperature is controlled at 120 C for 3 […]
Scientific
Centroid Position Vector of Gear Pair and Action Direction of Engaging Force
At present, the meshing force of gear in most models always follows the theoretical direction of meshing line, ignoring the […]
Scientific
Aperture circumferential stress in ring gear ring theory
Flexible wheels are subject to alternating stress with an amplitude twice that of assembly stress. In the structural analysis of […]
Scientific
Solution of Rolling Point Position of Tooth Face without Edge Contact of Helical Gear
When TE is greater than LTE at small wheel angle_1A under small load, it means that the clearance between teeth […]
News
Development of Dynamic Gear Profile Modification at China and Abroad
With the increase of speed of gear transmission system, more and more attention has been paid to the research of […]
News
Current situation of profile modification of involute spur gear drive system at China and abroad
Abroad, it is first pointed out that the load of the gear changes in a stepped manner. This method can […]
News
Application of Bearings in Fan Gearbox
Bearing is a key part in the gear box, if there is a problem with the bearing, the gear box […]
Scientific
Solution to Nonlinear Vibration of Spur Gear Drive System
The experimental research shows that the gear transmission system shows obvious non-linear vibration characteristics, and the traditional linear model can […]
Scientific
Engaging position of involute spur gear at any engagement teeth
The engagement position of individual gear teeth during gear transmission can be determined by analysis.In order to ensure the continuity […]
Scientific
An example analysis of dynamic meshing stiffness of involute spur gear transmission system
The engagement stiffness of the gear pair is calculated by applying the rotating speed of 2000r / min on the […]
Scientific
Maximum Assembly Stress of Flexible Wheel for Involute Harmonic Gear
Harmonic gear reducer is widely used in robotics, aerospace and other fields due to its high transmission ratio, high load-carrying […]
Scientific
Interaction force between cross-torsion-pendulum coupling gear pairs in involute spur gear drive
Most gear dynamic models assume that the meshing force is evenly distributed along the tooth width direction, but during actual […]
News
Rolling impact mechanism of modified helical gear
Under ideal conditions, the normal line of the standard involute tooth surface follows the direction of the theoretical engagement line […]