Oil trapping and meshing process of gear micropump
The trapping process and meshing process of the gear micropump are completely consistent with those of the commonly used gear […]
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Theory and method of manufacturing design for non Hertz contact gear
By coupling the strength design of gear based on EHL central stress fitting formula and the gear lubrication design based
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Lubrication design of gear manufacturing based on D-H formula
Based on D-H formula, Dowson D and Higginson GR proposed the minimum oil film thickness formula of EHL in line
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Comparison of gear design results based on EHL central stress formula and Hertz stress formula
1 Influence of speed The main parameters are as follows: helix angle β = 8.11 °, η 0 = 0.15
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Comparison of EHL central stress fitting formula and Hertz formula in gear line contact
The following figure shows the comparison of EHL central stress and maximum Hertz stress calculated by fitting formula under different
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EHL center stress formula of line contact and design of cylindrical gear based on EHL stress
1.EHL center stress formula of line contact The fitting formula of the central stress under EHL condition is proposed Where
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Hertz formula and design formula of cylindrical gear based on Hertz stress
1 Hertz formula The formula of maximum Hertz contact stress is as follows: Where, σ h is the maximum Hertz
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Tooth profile error correction of end face spiral gear
In the actual machining of the end face spiral gear coupling, due to the influence of machine tool thermal deformation,
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Mathematical modeling of theoretical tooth surface of face spiral gear
The end face spiral gear coupling is composed of concave tooth part and convex tooth part. The concave tooth part
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Finite element analysis of single stage double circular arc spiral bevel gear
The 3D models of nutation inner and outer bevel gears are imported into the finite element analysis software and assembled.
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Constraint function of single stage double circular arc spiral bevel gear
Fatigue strength constraint The nutation bevel gear adopts the basic tooth profile of GB / T 12759-1991 double circular arc
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Optimization objective function of single stage double circular arc spiral bevel gear
The single-stage nutation reducer is designed with the radial size less than 108 mm, the transmission power of 20 kW
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Nutation transmission principle of single stage double circular arc spiral bevel gear
The wobble of a coin on the table before it stops is nutation. A nutation transmission mechanism is formed by
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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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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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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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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
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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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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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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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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 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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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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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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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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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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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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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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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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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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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
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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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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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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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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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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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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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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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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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Finite element model of marine helical gear with backlash
In the process of helical gear transmission, the tooth surface contact deformation is caused by sudden change load, and the
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Parameters of sealed rotor system considering gear meshing characteristics
Based on the independent analysis of planetary gear transmission system and sealed rotor system, the two parts are integrated, and
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Establishment of dynamic equation of sealed rotor system with spur gear
According to the equivalent dynamic model shown in the figure, the dynamic differential equation of the system can be deduced
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Establishment of dynamic model of sealed rotor system with spur gear
According to the structural characteristics of each component in the system, a multi degree of freedom equivalent dynamic model of
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Simplification of sealed rotor system with straight planetary gear
Before the study of the system, firstly, the system is simplified, and the sealed runway and rotor are regarded as
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Structure analysis of sealed rotor system with straight planetary gear
For the rotor with seals, when the rotor is running at high speed, some characteristics of the seal will affect
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Structure analysis of sealed rotor system with straight planetary gear
The rotor with contact seal is taken as the research object. The system is composed of rotor shaft, seal track,
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Analysis of relative displacement of components in Spur Planetary Gear System
As shown in the figure, the relative position relationship of each gear is in the meshing state. (1) Projection of
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Kinematic analysis of components in Spur Planetary Gear System
In order to analyze the dynamics of the system, firstly analyze the acceleration of each component in the planetary gear
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Establishment of equivalent dynamic model of Spur Planetary Gear System
The model of gear transmission system is the expression of system mechanics and mathematics, and is the basis of gear
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Damping coefficient of Spur Planetary Gear System
Damping is an important introduction in the study of gear system dynamics. Because the damping value of gear system meshing
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Comprehensive meshing error of Spur Planetary Gear System
In the process of actual processing and installation of gears, it is inevitable to produce a variety of errors. These
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Total meshing stiffness of inner and outer meshing pairs of Spur Planetary Gear System
(1) When the gear teeth are in the single tooth meshing area, the total energy u in the meshing pair
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Bending stiffness, shear stiffness and axial compression stiffness of internal gears in Spur Planetary Gear System
In the picture: RR — pitch circle radius; RRB — radius of base circle; RRF — root circle radius; φ
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Bending stiffness, shear stiffness and axial compression stiffness of outer gear of Spur Planetary Gear System
In the picture: RB — radius of base circle; RF — radius of tooth root circle; Bending stiffness Kb: Shear
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Hertz contact stiffness of inner gear and outer gear in Spur Planetary Gear System
According to Hertz law, the elastic compression of two isotropic elastic bodies can be described by two projectile near the
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Nonlinear backlash of Spur Planetary Gear System
As shown in the figure is a sketch of the gear meshing pair with backlash. Its function is to reserve