Influence of addendum fillet r on spur gear forming
In order to study the influence law of tooth top fillet r on the forming of spur cylindrical gear, the […]
In order to study the influence law of tooth top fillet r on the forming of spur cylindrical gear, the […]
The die angle is one of the important process parameters in the design of tooth concave die. It is not
The correctness of the finite element model needs to be compared with the actual situation. If the simulation results are
Cold extrusion process is a complex elastic-plastic deformation process with many influencing factors. Die shape, material properties, lubricant selection and
Large module gear in power transmission of heavy industry (m ≥ 3) is essential. With the rapid development of heavy
From the multi-objective optimization of cold extrusion process parameters of spur gear, the influence of shaping quantity on the accuracy
Hot precision forging of spur gear is a precision forming method developed from hot die forging technology. It is mainly
With the rapid development of automobile industry, precision forming of spur gear has become an inevitable trend in the development
Figure 1 shows the front view of the temperature field on the single tooth profile surface and the middle section
Adhesive wear is the most common fault type on the working surface of mechanical system, which often occurs on the
1. Simulation method validation In order to verify the simulation model, the minimum oil film thickness is far less than
1. Basic wear model In the meshing process of gear pair, the relative sliding and rolling occurs between the meshing
When involute spur gear works, it has to go through the process of single tooth meshing and double tooth meshing
When involute spur gear works, it has to go through the process of single tooth meshing and double tooth meshing
In order to better reflect the effect of the test gear on the dynamic response characteristics of the system due
Figure 1 shows the measurement curve of tooth profile deviation of aa-1 gear after fatigue pitting. The measurement results show
Figure 1 shows the measurement curve of tooth profile deviation of aa-1 gear after 8 million times of operation. The
Figure 1 shows the profile deviation measurement curve of aa-1 gear working tooth surface (left tooth surface) after running for
Figure 1 shows the profile deviation measurement curve of aa-1 gear working tooth surface (left tooth surface) after running for
First of all, the professional D80 gear measuring and Testing Center (Figure 1) is used to measure the accuracy of
The main data acquisition method of cylindrical gear fatigue test-bed is to collect and record the data through the real-time
It is a very complicated and random process that gear evolves from the healthy state of tooth surface to fatigue
In order to verify the simulation model, the minimum oil film thickness is far less than the root mean square
In the meshing process of gear pair, the relative sliding and rolling occurs between the meshing tooth surfaces, which causes
Adhesive wear is the most common fault type on the working surface of mechanical system, which often occurs on the
Through the gear contact fatigue test-bed, the evolution process of gear fatigue pitting phenomenon and the vibration response characteristics of
The standard involute gear with 20 ° pressure angle processed by rack cutter is shown in the figure. The complete
As shown in the figure, it is known that the input power P1 of the high-speed stage of the two-stage
As shown in the figure, it is known that the input power P1 of the high-speed stage of the two-stage
① According to the contact fatigue strength formula of tooth surface, the The constraint conditions of tooth surface are obtained
The transmission diagram of the reducer is shown in the figure, and the optimization design is carried out according to
Given the transmission power P, transmission ratio I and output speed n of the reducer, a set of technical parameters
The load stroke curves of the two processes are shown in the figure. It can be seen from the figure
The traditional and improved processes are used for experimental study. The typical deformation conditions of the blank during the deformation
In this paper, the first mock exam of the internal gear of a solid cylinder with no hub hub and
The traditional closed die forging of internal gear is shown in figure (a). In the process of pressing the blank
With reliable transmission quality and efficiency, gears are widely used in mechanical field, especially in military industry, aerospace and other
According to the equivalent dynamic model shown in the figure, the dynamic differential equation of the system can be deduced
According to the structural characteristics of each component in the system, a multi degree of freedom equivalent dynamic model of
As shown in the figure, the relative position relationship of each gear is in the meshing state. (1) Projection of
In order to analyze the dynamics of the system, firstly analyze the acceleration of each component in the planetary gear
The model of gear transmission system is the expression of system mechanics and mathematics, and is the basis of gear
Damping is an important introduction in the study of gear system dynamics. Because the damping value of gear system meshing
In the process of actual processing and installation of gears, it is inevitable to produce a variety of errors. These
(1) When the gear teeth are in the single tooth meshing area, the total energy u in the meshing pair
In the picture: RR — pitch circle radius; RRB — radius of base circle; RRF — root circle radius; φ
In the picture: RB — radius of base circle; RF — radius of tooth root circle; Bending stiffness Kb: Shear
According to Hertz law, the elastic compression of two isotropic elastic bodies can be described by two projectile near the
As shown in the figure is a sketch of the gear meshing pair with backlash. Its function is to reserve
The meshing phase relationship of planetary gears can be determined according to the position angle of planetary gears and the
In essence, stiffness excitation is a kind of parametric excitation based on the number of teeth. In the process of
The meshing frequency of gears refers to the meshing times of teeth in unit time. For NGW type planetary gear
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 structural diagram of the straight gear planetary gear transmission system. The planetary carrier
As a complex sealed rotor system, the theoretical analysis and research of the system are carried out, and the related
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
Considering that the test system is more complex, it is affected by many objective factors such as the accessories of
The number of planetary gears is n = 3, the comprehensive meshing error amplitude is e = 10 μ m,