Dynamic characteristics of ship helical gear after modification
Figure 1 and Figure 2 show the frequency domain diagram of angular acceleration of driven wheel after modification. It can […]
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Error measurement method of noncircular gear
A lot of research has been done on the measurement of cylindrical gear and non-circular gear at home and abroad,
Scientific
Nonlinear dynamic model of Marine Helical Gear Considering backlash
Helical gears are meshed at the same time in the process of meshing. When studying the dynamic problem of gear
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Calculation results and analysis of helical gear
Transmission error is an important index of gear transmission performance. Transmission error refers to the difference between the actual position
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Case test of non Hertz contact gear design theory
The results show that the EHL center stress design results are very close to those based on Hertz theory, which
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Case test of non Hertz contact gear design
The dividing circle diameter of driving wheel of locomotive traction gear is 324 mm, transmission ratio μ = 2.59, tooth
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Mechanism of tooth surface distortion in machining helical gear with profile modification
Worm machining helical gear is mainly realized by changing the center distance between cutter and gear along the tooth width
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Production example test of non Hertz contact gear
In the general concept of engineers, the gear design method based on Hertz contact theory widely used in current engineering
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Improvement of tooth surface distortion in machining helical gear with profile modification
As shown in Fig. 1, the tooth surface of the modified helical gear obtained by changing the center distance is
Scientific
Definition of twist coefficient of tooth surface in machining helical gear with profile modification
The phenomenon of tooth surface twist refers to the torsion of tooth surface along the direction of tooth width. As
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Papers on non Hertz contact gear design
There are a lot of literatures about EHL Analysis of gear transmission, but the research on the combination of EHL
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Design method of non Hertz contact gear
Based on the EHL theory, a new gear design theory and method non Hertz contact gear design theory and method
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Derivation of tooth surface equation of helical gear with profile modification
Worm or hob machining helical gear coordinate system is shown in the figure, S1 is worm or hob coordinate system,
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Non Hertz contact gear design theory
Gear is an important industrial basic component and the core component of mechanical equipment. Its performance and reliability determine the
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Case analysis of nonlinear vibration reliability of gear mechanism
The rationality of the proposed method is verified by the nonlinear vibration reliability analysis of a pair of standard spur
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Experimental verification of end face spiral gear
In order to verify the correctness of digital closed-loop manufacturing technology for end face spiral bevel gear coupling, grinding experiments
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Multi pass Monte Carlo simulation method for reliability analysis of gear nonlinear vibration
In practical engineering, the stochastic response of gear nonlinear vibration is difficult to be characterized by Gaussian random process or
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Construction of digital closed loop manufacturing system for end face spiral gear
The digital closed-loop manufacturing technology of end face spiral gear coupling is to organically combine the numerical control processing technology
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Construction of mathematical model of multi-stage gear transmission system
According to the stiffness characteristics, there is a certain difference between the multi-stage gear transmission and the general gear transmission.
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Stochastic process method for reliability analysis of gear nonlinear vibration
Under the influence of random factors, all kinds of nonlinear vibration responses of gears can be regarded as random processes.
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Digital closed loop manufacturing technology of end face spiral gear coupling
The digital closed-loop manufacturing technology of end face spiral gear coupling is studied (1) The mathematical model of tooth surface
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Nonlinear vibration model of gear transmission
The lumped mass method is used to establish the nonlinear vibration model of single degree of freedom gear transmission as
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Digital closed loop manufacturing of end face spiral bevel gear coupling
The end face spiral gear coupling (also known as circular arc end gear) was invented by Gleason company. Relying on
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Optimal design of gear multistage transmission system
Optimize design variables The multi-stage gear reducer has the characteristics of complex structure. Considering the installation environment and conditions of
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Optimal solution of single stage double circular arc spiral bevel gear
The optimal design mathematical model of single-stage bevel gear nutation reducer is as follows Where 1 ≤ J ≤ 12.
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Analysis of nonlinear vibration characteristics of gear transmission system
The integral time range of solving differential equations is 300tm. In order to solve this problem, it is necessary to
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Single stage nutation reducer with double circular arc spiral bevel gear
According to the principle of nutation, various nutation mechanisms have been designed and studied from the aspects of structure analysis,
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Influence of gear tooth line radius on tooth thickness deviation
Under the same parameters, the author calculates the tooth thickness deviation of different tooth line radii in the same section,
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Lubrication technology of large open gear
Spray lubrication Large open gear adopts spray lubrication technology, which requires not only reasonable selection of lubricant but also reasonable
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Lubrication system of large open gear
The working condition of large open gear is very bad. In order to meet the operation characteristics of open gear,
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Influence of gear tooth width on tooth thickness deviation
When m = 4, z = 31, RT = 100 mm, 200 mm, 300 mm, 400 mm, respectively, measure the
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Influence of design parameters on profile characteristics of cylindrical gear with circular arc profile
The main structural design parameters of circular arc gear include pressure angle, tooth width, tooth radius, modulus, etc. Since there
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Solid additive for large open gear lubricant
Since the main working conditions of open gear are heavy load and low speed, it is necessary for open gear
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Calculation of tooth thickness of spiral cylindrical gear
The profile characteristics of circular arc cylindrical gear have important influence on gear design, tooth profile modification, lubrication, strength, etc.
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Characteristics of different base oils for large open gear lubricants
(1) Performance comparison of different base oils for open gear lubricants. (2) Characteristics of different types of lubricant base oils
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Tooth profile equation of gear milling with rotating cutter head
In order to establish the accurate three-dimensional model of cylindrical gear with circular arc tooth profile and study the tooth
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Types of lubricants for large open gear
(1) Asphalt based products. It is directly extracted from crude oil and contains extreme pressure additives and organic solvents. In
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Gear tooth profile equation of parallel connecting rod machining
The forming principle diagram of cylindrical gear tooth surface with circular arc tooth line processed by parallel linkage mechanism is
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Common wear forms of large open gear
Failure mode of open gear The main failure modes of open gear are pitting corrosion, spalling, plastic deformation, gluing, broken
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Lubrication and maintenance of large open gear
Gear is one of the key transmission parts of mechanical equipment, and is a main form of equipment power conversion:
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42CrMo4 gear hub blank flaw detection and internal crack ultrasonic flaw detection
The instrument model used for ultrasonic flaw detection is cts-1002 digital ultrasonic flaw detector. As the diameter of steel is
Scientific
Comparison between simulation and theoretical results of a sealed rotor system with gear meshing characteristics
The lumped parameter method and ADAMS software are used to model and solve the dynamics of the same research system.
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Transient dynamic analysis results of marine helical gear
In the process of helical gear meshing, because the hardness of the gear shaft is higher than that of the
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ADAMS simulation analysis of sealed rotor system based on gear meshing characteristics
According to the above analysis, before the simulation starts, the relevant parameters are set, and the corresponding settings are carried
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Time varying load torque of marine helical gear driven wheel
The MNF file generated in ANSYS is used to replace the ring gear on the wheel hub, that is to
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Dynamic equation of sealed rotor system with gear meshing characteristics
In ADAMS simulation software, for any mechanical system with motion constraints, the first Lagrange equation with Lagrange multiplier is used
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Research on dynamic characteristics and profile modification of marine helical gears
The dynamic characteristics of marine gearbox transmission system directly affect the fatigue life of gear and the transmission efficiency of
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Finite element quasi static contact analysis method for helical gears
The mesh quantity and quality of the finite element model directly affect the speed and accuracy of the calculation results.
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Define the collision contact force between gear and gear, between seal and seal track, and sleeve force
In ADAMS, the meshing between gear and gear is simulated by contact pair and collision contact force. Therefore, ADAMS simulation
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3D geometric model of helical gear
Taking the gear pair in gear parameters as an example, the three-dimensional geometric model of four groups of gear pairs
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Distortion mechanism and meshing performance of helical gears with profile modification
Gear is an important basic part of industrial equipment. With the development of modern industrial technology, higher requirements are put
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Dynamic response of a sealed rotor system with gear meshing characteristics solved by MATLAB
According to the specific parameters, the number of planetary gears is n = 3, the comprehensive meshing error amplitude is
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Definition and analysis framework of gear nonlinear vibration reliability
Firstly, the reliability of gear nonlinear vibration is defined as the probability that the vibration displacement, vibration velocity and vibration
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Multi point traversal method for nonlinear vibration reliability analysis of gear mechanism
Gear mechanism is widely used in aviation, aerospace, machine tools and key infrastructure and other fields, and is usually the
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Matlab solution of dynamic equation of sealed rotor system with gear meshing characteristics
The above characteristics of MATLAB make it have a strong advantage in solving differential equations. It provides seven kinds of
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Factors of industrial gear noise
Material selection The most commonly used material of gear is steel, followed by cast iron, nonferrous metals, nonmetal, etc., but
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Method for solving dynamic equations of sealed rotor system with gear meshing characteristics
At present, there are mainly analytical method, numerical method and experimental method to solve the dynamic analysis model of mechanical
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The dynamic performance simulation model of multi-stage gear transmission system is established
After establishing the mathematical model of the dynamic performance of the multi-stage gear transmission system, the dynamic performance simulation model
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Dynamic model and equation establishment of sealed rotor system with gear meshing characteristics
Because the transmission and seal tester is connected by rigid coupling, the dynamic model of the system is shown in
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Dynamic performance analysis and optimization of gear transmission system
Compared with ordinary gear transmission system, multi-stage gear transmission system has many advantages, such as small volume, light weight, high