Simulation and finite element method of hypoid gears
Hypoid gears are widely used in automobile, aircraft, ship, machinery, high-precision processing equipment and other fields. Its transmission has the […]
Hypoid gears are widely used in automobile, aircraft, ship, machinery, high-precision processing equipment and other fields. Its transmission has the […]
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
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
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
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
For the hypoid gear in the automobile drive axle, the previous research mainly focused on simulating the machining process of
The excitation of gear transmission system mainly includes the following two aspects: one is the internal excitation generated by the
Since the 1970s, scholars have done extensive and in-depth research on gear transmission system. Scholars began with the simple dynamics
The dynamic characteristics of gear system mainly include the natural frequency, dynamic response, dynamic stability, the influence of system parameters
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
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
Isothermal forging technology originated in the United States in the 1960s. It refers to the forging and forming of blank
The finite element method is an important method to predict the bending stress of the hypoid gear tooth root of
The dynamic behavior of gear transmission system mainly includes the dynamic meshing force, dynamic load coefficient, vibration and noise characteristics
Spiral bevel gear is widely used because of its strong bearing capacity and stable transmission. With the development of industrial
For the aviation bevel gear transmission system, the arrangement is as follows: 1). A general introduction to the research background
The precision forging of involute gear originated in Germany. In the 1950s, because there were not enough involute gear processing
The bending stress of the tooth root of the hypoid gear based on the integral drive axle model is predicted.
Drive axle vibration often produces annoying sound, which affects the transmission efficiency of the drive axle and reduces the fatigue
The key of involute gear machining is tooth profile machining. According to whether the material needs to be removed, the
In China, the research on the fatigue life of spur gears is mainly based on the method of stress life
The research conclusion of reverse engineering of logarithmic spiral bevel gear is mainly reflected in the following aspects: 1.The tooth
Based on the research of reverse technology of logarithmic spiral bevel gear, this paper expounds several important links in the
The tooth surface of logarithmic spiral bevel gear is a complex spatial curved surface shape, which makes its machining process
The design of automobile drive axle is the same as the design of other parts of transmission system. It needs
The surface reconstruction of logarithmic spiral bevel gear is to construct a real logarithmic spiral bevel gear tooth surface by
The bending fatigue of hypoid gear root of drive axle is affected by many parameters, including the geometry of hypoid
In HyperMesh, the geometric entity of hypoid gear is meshed. The curvature of hypoid gear changes greatly, especially the hypoid
Take a pinion from the logarithmic spiral bevel gear pair, apply the prepared red lead powder evenly on the surface
Figure (a) shows gleason#116 hypoid gear processing machine tool. The machine tool obtains the convex or concave surface of the
In 1981, Litvin and Gutman first proposed to use the comprehensive analysis method to determine the machining parameters of “format”
In the data acquisition process of logarithmic spiral bevel gear, there are many uncertain and complex comprehensive errors, which directly
Aiming at the problem that it is difficult to obtain the tooth surface coordinates of HFT hypoid gears, this chapter
The stress state and fatigue life of hypoid gear in the main reducer of drive axle is one of the
Logarithmic spiral bevel gear is a complex curved surface shape. In order to ensure the accuracy of the collected data,
The establishment of hypoid gear tooth surface model mainly includes the following five parts: Tool equation. The research object is
Aiming at the problem that it is difficult to obtain the tooth surface coordinates of HFT hypoid gears, this chapter
Reverse engineering is a reverse process of product design. The general product design is to design the shape and some
The research shows that the contact and bending stresses of spur gears can be obtained by finite element method, and
From the research status of hypoid gear or spiral bevel gear transmission error at home and abroad, it can be
Using the physical reverse engineering method to collect the discrete data points of the tooth surface of the logarithmic spiral
The mechanism of fatigue and noise generation of drive axle hypoid gear is deeply studied, and a method based on
The geometric model of drive axle hypoid gear is the basis of gear contact, transmission error, load and other analysis.
Munro defines the transmission error te (transmission error) as follows: the deviation between the actual position of the driven gear
Spiral bevel gear is a kind of space gear widely used in various high-speed and heavy-duty intersecting shaft and staggered
Cylindrical helical gear is a common transmission component in industrial machinery, which is widely used in transportation, aviation, shipbuilding and
In recent years, the competition in the automobile manufacturing industry has become increasingly fierce. In order to speed up the