Machining of cylindrical helical gears considering manufacturing errors
Cylindrical helical gear is a common transmission component in industrial machinery, which is widely used in transportation, aviation, shipbuilding and […]
Cylindrical helical gear is a common transmission component in industrial machinery, which is widely used in transportation, aviation, shipbuilding and […]
In order to reduce the transmission error below 1, the modification amount of helical gear is analyzed. First, analyze the
China’s research on spiral bevel gear processing mainly focuses on the research on the processing technology and equipment of Gleason
Compared with the traditional cylindrical gear, the tooth line of vh-catt is special. It is arc-shaped on the plane that
The variable step adaptive Runge Kutta numerical integration method will be used to solve the nonlinear dynamic differential equation of
The power loss of the gearbox mainly includes oil stirring loss, wind resistance loss, gear meshing loss and bearing loss.
Using the finite element simulation method to analyze the actual machining of gears, the force of the tool in the
Variable hyperbolic arc tooth profile cylindrical gear (vh-catt) is a new type of gear which applies arc tooth profile to
The cutting technology of spiral bevel gear was first proposed by Ernst wildhaber and Meriwether L. Baxter of Gleason company
Spiral bevel gears are widely used in aviation, ships, national defense technical equipment, machine tools, automobiles, engineering machinery, mining machinery
The dynamic equation of bevel gear is a nonlinear second-order differential equation with variable parameters. If it is solved directly
1.Introduction to transmission error of reducer gear There is a gear pair in the reducer. Theoretically, under the ideal assumption,
The transmission error of the first stage reduction driving helical gear in the reducer of a pure electric vehicle is
In the development of NVH for pure electric vehicles, the noise problem of the reducer is often found. The howling
The dynamics of bevel gear transmission system has been studied, but due to the author’s limited level and the complexity
ANSYS software is used to calculate the natural frequency of the central bevel gear of an aeroengine, and the static
The research work is carried out on the bevel gear fault of an aeroengine under research. The current situation of
Taking the hypoid gear of the drive axle as the research object, the mechanism of fatigue and noise generation of
The meshing stiffness of hypoid gears can be obtained by substituting the data of gear force, static transmission error and
Virtual assembly is to determine the relative position between models and complete model assembly through the reference and link relationship
Same as spur gear. In the actual working state of the central bevel gear, the meshing of the teeth is
In order to analyze the hypoid gear alignment, an accurate geometric model must be established to lay a foundation for
The physical parameters of the material used for the central bevel gear at working temperature are: elastic modulus, Poisson’s ratio
The noise prediction model of Hypoid Gear Meshing Based on drive axle is established. Firstly, the classical 14 DOF lumped
Conduct contact analysis (LTCA) on the hypoid gear under load. The resistance torque applied at the output end of the
ZHY gear provided the part drawing and assembly drawing of the hypoid gear of the main reducer of a certain
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