Firstly, according to the calculation principle of the meshing comprehensive stiffness of bevel gear teeth introduced, the time-varying comprehensive stiffness […]
Hypoid gears are widely used in automobile, aircraft, ship, machinery, high-precision processing equipment and other fields. Its transmission has the
The basic input involved in the dynamic equation of bevel gear transmission system. The time-varying meshing stiffness of bevel gear
The structure diagram of an aeroengine is shown in Figure 1. As can be seen from Figure 1, the central
The time-varying transmission error and meshing stiffness of the hypoid gear of the drive axle are directly related to the
The hypoid gear of the micro car main reducer is processed on the hypoid gear milling machine. The processing principle
With the development of numerical calculation methods, the finite element method (FEM) has been widely used in engineering analysis. It
The dynamic equation of bevel gear is a differential equation, which belongs to the initial value problem. The traditional methods
The bending fatigue strength and time-varying meshing characteristics of hypoid gears of drive axle are studied. Because of the complex
According to the meshing stiffness calculation model of hypoid gears, it is necessary to calculate the transmission error of hypoid
Although there are many harmonics in the meshing force of bevel gear, not all harmonics can arouse the resonance of
The structure of the rear axle is shown in Fig. 1. The vibration and noise are always associated with each
In the 1970s, China began to study the technology related to hypoid gears. It mainly focused on “Gleason gear”, listed
When the hypoid gear of the main reducer of the drive axle works in practice, the bending stress of the
As a key assembly component in the automobile transmission system, the drive axle plays a role in reducing speed and
The main contents are as follows: a finite element based static transmission error calculation model is briefly described, and the
As early as 1820, many mathematicians have put forward the concept of hypoid gear. Its essence is a space geometry
Select a spur gear to calculate its stiffness. The reason why spur gear is selected as the research object is
When studying the traveling wave vibration of bevel gear, in order to calculate the resonant speed of bevel gear, we
The automobile has a development history of more than 100 years. With the continuous development and progress of technology, various
When the central bevel gear transmission system works, the fatigue fracture fault of the central bevel gear often occurs due
From the previous analysis, as long as the elastic deformation of the gear teeth is obtained, the time-varying meshing stiffness
In the radiated noise of SUV, bus, light truck and other power train, the drive axle is one of the
Fig. 1 shows the meshing coupling model of hypoid gear based on the finite element model. From the meshing diagram,
When the bevel gear is working, once the frequency of the exciting force generated by the meshing vibration dynamic load
From the comparison of the dynamic and static transmission errors of hypoid gears, it can be seen that when the
The following is a comparison of the change law of gear mesh stiffness when the gear load is different. Here,
There are two kinds of torsional vibration of bevel gear transmission system: low-frequency torsional vibration and high-frequency torsional vibration. Low
For the hypoid gear in the automobile drive axle, the previous research mainly focused on simulating the machining process of
In the dynamic analysis of the hypoid gear, the difference from the static analysis is that the input end of
The excitation of gear transmission system mainly includes the following two aspects: one is the internal excitation generated by the
The dynamic model of bevel gear transmission contains various geometric parameters, physical parameters and load parameters. The geometric parameters include
Since the 1970s, scholars have done extensive and in-depth research on gear transmission system. Scholars began with the simple dynamics
The torsional vibration analysis model only considers the torsional vibration of the system. In the vibration analysis of the gear
The dynamic characteristics of gear system mainly include the natural frequency, dynamic response, dynamic stability, the influence of system parameters
1.Analysis type First, the static nonlinear meshing analysis is carried out. In the analysis step, the class’ static stress /
The installation deviation of hypoid gears is mainly divided into four categories. The definition of installation deviation direction is shown
The dynamic excitation caused by the time-varying characteristics of meshing stiffness during gear meshing is called stiffness dynamic excitation of
Relevant statistical analysis shows that the development difficulty of bevel gear and transmission system accounts for 9% ~ 13.5% of
When the rigidity of differential case, support bearing and support housing of drive axle hypoid gear is relatively large, their
Since the early 1970s, people have begun to use the finite element method to calculate the elastic deformation and tooth
As a very important form of mechanical transmission, gear transmission system has the characteristics of strong bearing capacity, stable transmission,
The time-varying transmission error te (transmission error) and mesh stiffness change are the main excitation sources in the dynamic meshing
Different angular velocities are applied to the meshing model of hypoid gears, and there is no concept of velocity in
Taking straight teeth as an example, the basic concept and properties of gear meshing stiffness are explained. Tooth meshing stiffness
Isothermal forging technology originated in the United States in the 1960s. It refers to the forging and forming of blank
Load different resistance moments on the output end of the large gear, and the corresponding transmission error is shown in
Gear mesh generation strategy is directly related to the calculation speed and accuracy. In order to determine the finite element
The finite element method is an important method to predict the bending stress of the hypoid gear tooth root of
The effect of the installation deviation Gama of the cross angle of the hypoid gear on the fatigue stress of
The second-order error of logarithmic spiral bevel gear can be understood as the longitudinal and transverse drum shape error of
The dynamic behavior of gear transmission system mainly includes the dynamic meshing force, dynamic load coefficient, vibration and noise characteristics
The influence range of each installation deviation on fatigue parameters is shown in the figure. According to the order of
Spiral bevel gear is widely used because of its strong bearing capacity and stable transmission. With the development of industrial
As shown in Fig. 1, the influence of the installation deviation V of the offset distance of the hypoid gear
In the actual measurement of logarithmic spiral bevel gear, there is an offset in the measurement error. This offset can
Difference surface is a widely used surface error analysis tool. It was initially applied to the error discrimination of first-order
For the aviation bevel gear transmission system, the arrangement is as follows: 1). A general introduction to the research background
According to the requirements of the national driving axle fatigue test standard qc/t 533-1999, the test bench as shown in
The tooth surface data point coordinates of logarithmic spiral bevel gear are collected by 3D laser scanner, and the tooth
