Active design method of FH hypoid gear tooth surface
There are a series of performance requirements in gear working process, such as tooth surface bearing capacity, installation tolerance and […]
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Calculation of meshing frequency of Spur Planetary Gear
The meshing frequency of gears refers to the meshing times of teeth in unit time. For NGW type planetary gear
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Tooth surface design method of FH hypoid gear based on transmission error
In the 1940s, Gleason company Ernest wildhaber proposed the pitch surface model of hypoid gears, which made the model become
Scientific
Calculation of related parameters of Spur Planetary Gear System
As shown in the figure is the structural diagram of the straight gear planetary gear transmission system. The planetary carrier
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Tooth surface design method of FH hypoid gear based on contact mark
TCA is to use computer simulation to analyze the contact marks and transmission error curves of gear teeth under no
Scientific
Dynamic model of planetary gear speed increasing system
In terms of theoretical analysis, the theoretical basis of gear system dynamics has gradually developed from the earliest impact theory
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Machining method of FH hypoid gear
There are two kinds of machining methods for hypoid gears, one is to use single index end face milling Face
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Equation of hypothetical profile of FH hypoid gear
The imaginary profile wheel is composed of the path of the blade in the virtual machining process, and the number
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Problems in design and manufacture of FH hypoid gear
The tooth surface of hypoid gear is more complex, and it is sensitive to the changes of tool and cutter
Scientific
Analysis of surface roughness of spiral bevel gear near pits by femtosecond laser ablation
The surface roughness Ra near the ablation pit can objectively reflect the micro geometric characteristics of the ablated material surface.
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High performance drive axle FH hypoid gear
With the rapid growth of China’s automobile consumption market, China has become a big automobile production and marketing country. Therefore,
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Experimental analysis of femtosecond laser ablation topography of spiral bevel gear
After femtosecond laser micromachining the tooth surface, optical microscope dmm-300c was used to observe the characteristics of ablation ring morphology
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Experimental analysis of femtosecond laser ablation of spiral bevel gear
In order to study the influence of different energy density on the depth of ablation pit, vhx-600 three-dimensional depth of
Scientific
Numerical solution and simulation analysis of spiral bevel gear
The finite difference method is used to solve the two temperature equation. The laser pulse width is 800 FS, and
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Experimental system and specimen for femtosecond laser ablation of spiral bevel gears
The femtosecond laser micromachining system used in the experiment is shown in the figure. It is mainly composed of laser,
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Energy coupling model for femtosecond laser ablation of spiral bevel gears
In the study of femtosecond laser ablation of 20CrMnTi gear material, the two temperature model is used to study the
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Spiral bevel gear material and femtosecond laser ablation mechanism
20CrMnTi, commonly used material for spiral bevel gears, is a kind of good carburizing steel with high impact toughness, high
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Femtosecond laser ablation characteristics of spiral bevel gear material 20CrMnTi
As a new type of gear transmission structure, spiral bevel gear transmission is the key component to realize spatial intersecting
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Finite element analysis on quenching process of transmission helical gear
In the quenching process of automotive transmission helical gear, the control of temperature, stress and thermal deformation has always been
Scientific
Comparison and analysis of time-varying meshing stiffness of helical gears
According to the international standard of iso6336-1-2006, the average meshing stiffness of a gear is regarded as the total stiffness
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Influence of process parameters on gear rolling process
Gear rolling forming is a new technology that makes metal billet produce plastic deformation continuously under the action of the
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Total time-varying meshing stiffness of helical gears
According to the above-mentioned time-varying meshing stiffness equation of helical gear, the contact line of helical gear pair is used
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Research object of gear vibration noise in manual transmission
The main research object is the transmission of a medium-sized commercial truck, which contains six gears, and the fifth gear
Scientific
Validation of finite element method for helical gear time varying meshing stiffness
In order to study the time-varying meshing stiffness of helical gears, a three-dimensional model is established by three-dimensional software, and
Scientific
Boundary conditions between sliced gears
When calculating the meshing stiffness of helical gear by slicing method, because the tooth surface of helical gear is helical,
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Research direction of transmission gear vibration and noise in China
In recent years, the accuracy of test equipment has been improved continuously, and the development of simulation software is becoming
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Main research contents of gear transmission system fault
According to the results of the research review, this paper takes the gear transmission system as the research object, aiming
Scientific
Helical gear contact line
When a pair of helical gears are engaged, the contact line of the two gear surfaces is a straight line
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Research on vibration and noise of transmission gears in China
With the maturity of simulation technology, the research of transmission vibration and noise begins to rely on the aid of
Scientific
Gear tooth matrix stiffness
In the process of gear meshing, the time-varying meshing stiffness is mainly related to the meshing force and deformation of
Scientific
Establishment of stiffness equation of helical gear under spalling fault
The tooth spalling model is shown in Figure 1, where SH is the depth of tooth spalling, SL is the
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Research status of transmission vibration and noise in China
China started to pay attention to transmission vibration and noise relatively late, and the early main direction focused on the
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Research direction of transmission gear vibration and noise abroad
With the development of sound radiation theory, the research on sound radiation of transmission case is more in-depth abroad. J.
Scientific
Time varying meshing stiffness principle of helical gear
When the potential energy method is used to solve the time-varying meshing stiffness of spur gear, the meshing stiffness mainly
Scientific
Meshing stiffness analysis of time-varying Gears Considering Different spalling shapes
With the rapid development of wind power technology in recent years, improving the working performance of wind turbine is gradually
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Research on vibration and noise of transmission gears abroad
Recently, with the improvement of research level and the progress of transmission vibration and noise research related technology, foreign scholars
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Research status of transmission gear vibration noise
At present, great attention has been paid to the control and research of transmission vibration and noise at home and
Scientific
Influence of process parameters on gear rolling process
In order to analyze the influence of rolling process parameters on rolling process, orthogonal test method was used to analyze
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Research status of transmission gear vibration and noise abroad
Transmission vibration and noise have been studied abroad for many years, and some remarkable achievements have been made. First of
Scientific
Analysis of gear rolling process
The rolling process is divided into four stages: initial feeding stage, gear dividing stage, continuous feeding rolling stage and shaping
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Practical application field of transmission gear
With the rapid development of China’s economy, the proportion of automobile in urban construction, resource exploitation, transportation and daily travel
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Finite element parameter setting of gear rolling process
According to the characteristics of roll forming process, the finite element analysis model is established, and the process simulation parameters
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Prospect of research on fault vibration characteristics of gear transmission system
A series of research work is carried out on the influence of typical faults such as root crack and bearing
Scientific
Analysis on vibration characteristics of gear transmission system with root crack and bearing compound fault
1) Root crack and inner and outer raceway failure of bearing Figure 1 shows the frequency domain diagram of bearing
Scientific
Comparison of vibration characteristics of gear transmission system under different conditions
As shown in figure (a) is the time domain diagram of the displacement and vibration analog signal of the driving
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Fault vibration characteristics of gear transmission system
Taking the typical fault vibration characteristics of gear transmission system as the research object, the time-varying meshing stiffness of gear
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Dynamic model of gear-rolling bearing system
Taking the gear bearing transmission system as the research object, the dynamic model of the gear rolling bearing system with
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Unit contact line load of helical gear
Calculation of contact line length of helical gear The length of contact line of helical gear has a great influence
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Gear root crack and bearing rolling element fault
The figure shows the frequency domain diagram of bearing 1 and bearing 3 when root crack and raceway fault occur
Scientific
Calculation of engagement length and coincidence degree based on helical gear
1.Actual meshing line length of tooth profile In the transmission process of helical gear, the meshing line of tooth profile
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Gear root crack and bearing inner raceway fault
The figure shows the frequency domain diagram of bearing 1 and bearing 3 when root crack and raceway fault occur
Scientific
Vibration characteristics of gear pitch error
Single tooth pitch error (1) Time domain characteristics The existence of single tooth pitch error will lead to the problem
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Gear root crack and bearing outer raceway fault
The figure shows the frequency domain diagram of bearing 1 and bearing 3 when root crack and outer raceway fault
Scientific
Research on contact degree and unit contact line load based on helical gear
Helical gear is widely used in high-speed and heavy-duty transmission because of its smooth transmission, strong bearing capacity, low noise,
Scientific
Time domain and frequency domain characteristic analysis of gear typical machining errors
Gear is the core component in the field of power transmission. It is widely used in automobile, aerospace, ship and
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Frequency domain characteristics of gear profile error and vibration characteristics of bump
Frequency domain characteristics of tooth profile error The tooth profile error mainly acts on the gear meshing frequency energy, and
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Research on gear vibration noise of manual transmission
As far as the current research is concerned, the research on the vibration and noise of automobile transmission mainly focuses
Scientific
Typical machining error of gear
Single tooth pitch error Single tooth pitch error refers to the arc length dimension deviation of two adjacent teeth on
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Research purpose of gear transmission system fault
As the most widely used power and motion transmission device of mechanical equipment, the mechanical behavior and working performance of
Scientific
Dynamic model and solution of gear transmission system
At present, there are more researches on the vibration of gear pair under the action of nonlinear excitation, and there