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 […]
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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.
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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Effect of speed change on engagement position of fixed-shaft gear drive
It is assumed that the centre of both gears is rigidly supported.In the meshing state of tooth surface, the relationship
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Profile modification of involute spur gear drive system
Gear modification is a key technology to reduce vibration, noise and improve reliability of gear transmission system.Since the tooth profile
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Fan gear box lubrication
Lubrication of gear box is very important to the operation of gear box, especially the position of bearings, gear meshing
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Nonlinear time-varying model of gear transmission system
The nonlinear time-varying model contains many nonlinear factors such as time-varying stiffness and clearance. Recently, with the development of nonlinear
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The influence of meshing state change of tooth surface and back of involute spur gear on meshing position
The engagement state of the tooth surface can be determined by the formula at any time during the transmission process.From
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Dynamic meshing stiffness of involute spur gear transmission system
It can be seen from the analysis that the dynamic boundary conditions α B (T) and the dynamic boundary conditions
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Processing of double gear pair large gear
(1) Big gears need to be pre-grinded after carburizing treatment, in order to eliminate heat treatment deformation before machining locating
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Mechanism analysis and improvement of gear surface corrugation order noise
1. Gear corrugation order noise and analysis A bewildering “ghost-step” noise occurs in the pre-production stage of a vehicle reducer
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Nonlinear dynamic model of lateral-torsional-pendulum coupling for involute spur gear drive
The three-dimensional solid model of involute spur gear drive is shown in the figure, and the following assumptions are used
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Development status of fan gearbox
Wind power gearbox is the key part of wind power generator. With the development of wind power, wind power gearbox
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Nonlinear time-invariant model of gear drive system
In the process of gear transmission, in order to avoid jamming, clearance must be left between the sides of the
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Effect of Center Distance Change of Involute Spur Gear on Meshing Position
During gear transmission, changes in center distance cause changes in the direction of the engagement line, resulting in the actual
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Angular positioning groove machining of double gear shaft
(1) After grinding the teeth of the gear shaft, the locating groove is machined as shown in the figure. (2)
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Mechanism of gear surface corrugation order noise
In the gear vibration and noise phenomena of the automobile industry, gear screeching and knocking are usually the most common
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Nonlinear dynamic model of coupling of involute spur gear drive
According to the method used in establishing dynamic model, the dynamic model of gear transmission system can be divided into
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Nonlinear dynamic meshing stiffness of fixed-shaft gear drive
When calculating meshing stiffness by quasi-static method, fixed constraints are generally imposed on the center position of each gear and
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Vibration characteristics test of spur gear drive system
The experimental study on gear transmission system can repeat the same test condition several times, thus helping researchers to find
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Non-linear dynamic tooth side clearance of fixed-shaft gear drive
In calculating the dynamic meshing force of the gear, the influence of the degree of freedom of swing is neglected,
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Nonlinear dynamic meshing model of involute spur gear drive
For involute spur fixed-shaft gear drive and planetary gear drive respectively, a nonlinear dynamic model of yaw-torsion coupling was established
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Technical improvement of large-size and high-precision spiral bevel gears
The design of side gears and hypoid gears is the same as that of arc gears and hypoid gears. The
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Linear time-varying model of gear transmission system
In order to ensure the continuity of gear drive, the overlap degree of gears is generally greater than 1, which
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Non-linear time-varying model of spur gear
In fact, the engagement parameters such as engagement angle, clearance and time-varying rigidity of gears are affected to some extent
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Dynamic Models of Spur and Planetary Gear Drives
For involute spur gear drive and planetary gear drive, the yaw-torsion coupling non-linear dynamic model including the dynamic changes of
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Centroid Position Vector of Sun Gear Planetary Wheel and Action Direction of Engaging Force
The main difference between the three-dimensional dynamic model of the sun-planetary gear and that of the fixed-shaft gear drive is
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Nonlinear dynamic model of lateral-torsional-pendulum coupling for planetary gear drive
The three-dimensional solid model of the Involute Spur Planetary gear drive is shown in the figure, and the assumptions used
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Nonlinear Dynamic Model of Lateral-Torsion-Swing Coupling for Fixed-Shaft Gear Drive
Lagrange method is used to establish the yaw-torsion coupling nonlinear dynamic model of fixed-axle gear drive. The Lagrange equation is:
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Gear measurement and fault diagnosis
The manufacturing error of gear not only affects the stability of power transmission, resulting in vibration noise and dynamic load
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Process analysis of double gear pairing
(1) To meet the high requirement of gear accuracy, foreign high-precision gear grinder is used for gear grinding. Specifically, German
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Nonlinear dynamics of involute spur gear drive system
(1) Nonlinear dynamic model of yaw-torsion coupling of involute spur gear drive For involute spur fixed-shaft gear drive and planetary
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Nonlinear vibration characteristics of spur gear drive system
Nonlinear factors such as backlash and time-varying meshing stiffness inevitably exist in gear meshing process, which belongs to the research