Experimental device for dynamic characteristics of gear friction excitation
The experiment is carried out on the FZG Standard Test stand, as shown in Figure 1. The modified A-gear with […]
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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 friction coefficient of gear driven by different factors and its calculation model
The friction coefficient of tooth surface is affected by many factors, which will change with meshing position, lubrication state 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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Research progress on thermal behavior of gear system
Gear system thermal behavior plays an important role in high-speed and heavy-load gear transmission, affecting the strength, life and safety
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Profile modification of high-speed heavy-load gear drive
Profile modification is an effective method to reduce gear vibration, noise and thermal bonding failure. Profile modification can correct load
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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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Establishment of dynamic model for gear friction excitation
In addition to causing translation vibration of gear along the vertical engagement line, the friction moment will also form to
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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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Comprehensive Research on Thermal Behavior of Gear System
The thermal behavior of gear system is comprehensively studied.Based on thermal design and thermal check of gear transmission system, a
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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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Profile modification of involute spur gear drive system
Determining the profile modification quantity is a complicated problem. If the profile modification quantity is too large, the coincidence degree
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Current situation of dynamic research on friction excitation of gear tooth surface
Tooth surface friction is a force formed by the relative sliding between the two contact tooth surfaces of a gear
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Research on Gear Drive Power Excited by Different Factors
Gear drive system is a complex structure system which includes gear pair, drive shaft, bearing, box and other components. The
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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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Profile modification of involute spur gear drive system
For single-stage gear drive system, the influence laws of dynamic load and its parameters are analyzed under steady-state and no-load
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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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Nonlinear Vibration Characteristics of Involute Spur Gear Drive System
For single-stage gear drive system, engine excitation is taken as input condition, dynamic characteristics and parameter influence rules under steady-state
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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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Stress Analysis of Coal Mill Gear
The vertical coal mill is shown in Figure 1.Reducer is an important part of coal mill and is mainly used
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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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Design route of mechanical process for double drive gear
Process routing design in machining.In order to ensure that the geometrical shape, dimension measuring accuracy, position moving accuracy and various
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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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Gear Blank Selection for Double Drive Gears
1. Material Selection of Blank The mechanical gear blank is simple in structure and small in size, and it has
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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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Machining technology of double drive gear
The blank is determined to be abrasive forging. After cleaning, the blank is positive-heat quenched and ground to effectively eliminate
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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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Positioning Elements for Machining Helical Bevel Gears
The locating elements for spiral bevel gears are V-shaped blocks and press plates. After positioning the workpiece, before drilling, it
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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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Bevel gear without backlash
Gear is an important basic component in mechanical transmission. Different from other types of gears, bevel gear, as a special
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Basic Requirements for Helical Bevel Gear Locating Elements
The positioning of the workpiece is achieved by the contact between the positioning surface on the workpiece and the V-block
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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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Research Significance of Cold Extrusion Finishing of Cylindrical Gear by Hot Precision Forging
Compared with traditional cutting process, the hot precision forging cold extrusion compound forming process has the advantages of high efficiency,
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Advantages of Plastic Forming for Cylindrical Gears
The advantages of forming cylindrical gears by plastic forming are as follows: 1) Productivity.Taking the small module gear used in
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Composite Forming of Cylindrical Spur Gear by Hot Precision Forging and Cold Extrusion
Gears are wheel-shaped mechanical parts that transmit torque by whistling closure of teeth.Gears can change speed and torque, direction of
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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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High-speed heavy-duty gear drive
Gear drive system is widely used in various mechanical equipment because of its accurate transmission ratio, stable and reliable, long
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Gear drive system is the core mechanism of mechanical equipment
Gear drive system is the core mechanism of mechanical equipment and the main equipment to determine the performance of the
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Determination of Process Route for Helical Bevel Gear
Process analysis: The processing of spiral bevel gears is mainly divided into the following stages: 1) Billet processing: Billet forming
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Future Research on Nonlinear Dynamics of Involute Spur Gear Drive System
(1) Deep analysis of tooth bias torque caused by deformation of drive shaft and bearing and tooth error is introduced
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Research on Dynamic Characteristics and Optimum Design of Gear Drive System of Tracked Vehicle
For tracked vehicle gear drive system, firstly, the dynamic loads of main components in different gears are compared and analyzed;
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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