According to Hertz contact theory, the elastic deformation of tooth surface increases with the increase of contact stress when the […]
As a complex sealed rotor system, the theoretical analysis and research of the system are carried out, and the related
The modeling method of FH hypoid gear is shown in Fig. 1 The two tooth surfaces are assembled in the
After meshing, the preprocessing file is imported into ABAQUS and set as follows: (1) Material definition: the material parameters of
Based on the dynamic theory, the planetary gear speed increasing system and the rotor system with contact seal are analyzed
The physical quantity measured by the sensor is the radial vibration acceleration signal of the rotor in the sealing tester,
Considering the gear meshing characteristics of the seal rotor system dynamic characteristics test device, the actual photos and overall structure
The detailed steps of solving the elliptic boundary and contact line of the instantaneous contact between two tooth surfaces based
Considering that the test system is more complex, it is affected by many objective factors such as the accessories of
The physical quantity measured in the test is mainly the radial vibration of the rotor in the sealing tester. Therefore,
The number of planetary gears is n = 3, the comprehensive meshing error amplitude is e = 10 μ m,
The physical quantity measured in the test is mainly the radial vibration of the rotor in the sealing tester. Therefore,
The rotor with contact seal is taken as the research object. The simplified model is shown in Fig. 1. The
The sealed rotor system considering gear meshing characteristics is a complex mechanical system composed of gear pairs, rotors, seals and
The planetary gear transmission system studied in this paper has fixed inner gear ring, planetary carrier and sun gear as
As shown in the figure, the relative position relationship of each gear is in the meshing state. (1) Projection of
The reason why the contact seal can play a sealing role is that the contact between the seal and the
As shown in the figure, the relative position relationship of each gear is in the meshing state. (1) Projection of
In order to carry out dynamic analysis of the system, this section first analyzes the acceleration of each component in
From the point of view of vibration theory, gear transmission system is more complex than ordinary mechanical system, and the
As shown in the figure is the translation torsion coupling dynamic model of the spur gear transmission system established in
In essence, stiffness excitation is a kind of parametric excitation based on the number of teeth. In the process of
Taking the practical engineering application as the background, this paper takes the sealed rotor system considering the gear meshing characteristics
The model of gear transmission system is the expression of system mechanics and mathematics, and is the basis of gear
The nonlinear dynamic characteristics of rotor system have also been studied in China. In 2002, Li Songtao, et al. Studied
Damping is an important introduction in the study of gear system dynamics. Because the damping value of gear system meshing
The research on the dynamic characteristics of rotor has experienced from linear theory to nonlinear theory, and the research and
The meshing phase relationship of planetary gears can be determined according to the position angle of planetary gears and the
In China, in 1997, Zhang Jianyun et al. Established the dynamic model of 2K-H Planetary Gear Reducer by using the
In the process of actual processing and installation of gears, it is inevitable to produce a variety of errors. These
In foreign countries, in 1999, Jian Lin and Parker R G analyzed the inherent characteristics and free vibration characteristics of
According to Hertz law, the elastic compression of two isotropic elastic bodies can be described by two projectile near the
In recent years, with the continuous development of mechanical vibration theory, the research on mechanical system at home and abroad
As shown in Fig. 1, the sketch of gear meshing pair with backlash is used to reserve the side clearance
As a kind of rotating machinery which mainly relies on rotary motion to complete power and motion transmission, it is
Face milling (FM) and face hobbing (FH) are widely used in machining bevel gears, hypoid gears and other complex curved
The FH hypoid gear is mainly studied. Firstly, the tooth surface modeling is carried out by cutting simulation, and the
There are a series of performance requirements in gear working process, such as tooth surface bearing capacity, installation tolerance and
The meshing frequency of gears refers to the meshing times of teeth in unit time. For NGW type planetary gear
In the 1940s, Gleason company Ernest wildhaber proposed the pitch surface model of hypoid gears, which made the model become
As shown in the figure is the structural diagram of the straight gear planetary gear transmission system. The planetary carrier
TCA is to use computer simulation to analyze the contact marks and transmission error curves of gear teeth under no
In terms of theoretical analysis, the theoretical basis of gear system dynamics has gradually developed from the earliest impact theory
There are two kinds of machining methods for hypoid gears, one is to use single index end face milling Face
The imaginary profile wheel is composed of the path of the blade in the virtual machining process, and the number
The tooth surface of hypoid gear is more complex, and it is sensitive to the changes of tool and cutter
The surface roughness Ra near the ablation pit can objectively reflect the micro geometric characteristics of the ablated material surface.
With the rapid growth of China’s automobile consumption market, China has become a big automobile production and marketing country. Therefore,
After femtosecond laser micromachining the tooth surface, optical microscope dmm-300c was used to observe the characteristics of ablation ring morphology
In order to study the influence of different energy density on the depth of ablation pit, vhx-600 three-dimensional depth of
The finite difference method is used to solve the two temperature equation. The laser pulse width is 800 FS, and
The femtosecond laser micromachining system used in the experiment is shown in the figure. It is mainly composed of laser,
In the study of femtosecond laser ablation of 20CrMnTi gear material, the two temperature model is used to study the
20CrMnTi, commonly used material for spiral bevel gears, is a kind of good carburizing steel with high impact toughness, high
As a new type of gear transmission structure, spiral bevel gear transmission is the key component to realize spatial intersecting
In the quenching process of automotive transmission helical gear, the control of temperature, stress and thermal deformation has always been
According to the international standard of iso6336-1-2006, the average meshing stiffness of a gear is regarded as the total stiffness
Gear rolling forming is a new technology that makes metal billet produce plastic deformation continuously under the action of the
According to the above-mentioned time-varying meshing stiffness equation of helical gear, the contact line of helical gear pair is used
The main research object is the transmission of a medium-sized commercial truck, which contains six gears, and the fifth gear
