Problems in dynamic modeling of multistage gear transmission system box coupling
It should be noted that the dynamic substructure method is mainly convenient to establish the coupling dynamic model of the […]
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Research and development of multi stage gear transmission system box coupling dynamic modeling
Choy et al established the dynamic model of the transmission system by using the transfer matrix method and the dynamic
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Dynamic modeling of multistage gear transmission system box coupling
With the deepening of research and the improvement of computer performance, the research object of gear system dynamics has experienced
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Problems in gear meshing excitation modeling
There are some problems in gear meshing excitation modeling ① The time-varying meshing stiffness and static transmission error are scalars
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Multi stage gear meshing excitation modeling
As an elastic mechanical system, gear system produces vibration and noise problems under dynamic excitation. The dynamic excitation is the
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Research status and problems of gear system dynamics
Gear system is the most widely used transmission system in all kinds of mechanical equipment. Its mechanical behavior and working
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Research on fatigue damage of low speed and heavy load gears by foreign scholars
Shi uses the software perdynamic (PD), which is used to analyze the crack propagation in the fracture of engineering materials.
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Research significance of multi-stage gear transmission dynamics of shearer cutting part
The cutting part is the core part of the shearer’s function of cutting coal and loading coal. It is mainly
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Fatigue crack growth behavior of low speed and heavy load gears
Huang believes that the dispersion of fatigue crack growth behavior should be accurately characterized in the structural integrity assessment based
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Multi stage gear transmission of shearer cutting part
Coal is China’s basic energy and important chemical raw materials. Coal industry is an important basic industry related to national
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Research on fault mechanism of low speed and heavy load gear
Heavy duty gear is the core component of large equipment transmission, which is widely used in many industries such as
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Optimal design of bevel gear transmission mechanism
The function of bevel gear is to transmit the motion and power between two intersecting axes. Similar to cylindrical gears,
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Finish machining of super large modified gear
From the point of view of the purpose of designing super large modified gear (medium hard tooth surface and medium
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Rough machining of super large modified gears
According to the characteristics and cutting pattern of hobbing super large modified gear, the maximum wear of hob occurs at
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Rotation direction matching of super large modified gear hob
It can be seen from practice that in hobbing large modulus multi tooth number gears, because of the large cutting
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Study on carburizing process of low speed and heavy gear
The traditional gas carburizing method uses a single liquid (such as kerosene) carburizing to control the surface carbon content and
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Datum point and tangent point of axial displacement of super large modified gear hob
The principle of axial displacement method: (1) when the hob moves along the cutter bar, the thread of cutter teeth
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Flame surface hardening method for low speed and heavy load gear with soft tooth surface
In heavy mining and building materials machinery, a large number of large gear pairs with open drive are used. The
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Theoretical length of hob for cutting metal in gear slot
When the standard hob is used to hobbing the super large modified gear, the phenomenon of non involute tooth profile
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Carburizing and quenching heat treatment process for low speed and heavy duty gears
Mining machinery, transportation machinery and other low-speed heavy-duty gear, require the use of high reliability carburized hardened gear after grinding.
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Hobbing super large modified gear with standard hob
In order to improve the load-bearing capacity and service life of low-speed, heavy-duty, large modulus, multi tooth number and large
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Solutions to failure of asteroid gearbox
Due to the requirements of structure and economy, the planetary carrier must be designed with the structure of thin left
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Failure analysis of asteroid gearbox
In the early stage of new product development, there must be sufficient simulation analysis and calculation and a large number
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Structure and problem description of asteroid gearbox
The main components of planetary transmission include sun gear, planetary gear, ring gear, planetary carrier, pin shaft and bearing, which
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Failure analysis of an asteroid gearbox
Asteroid gear has compact structure and high reliability. It is usually used for reducing transmission in industrial fields (rotary, walking,
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A method for measuring axial parallelism of gear pair in gearbox
Gear transmission is a device that transmits motion and power by gear pair. It is the most widely used mechanical
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Gear fault classification based on morphological wavelet and fuzzy entropy
When the transmission gear has cracks, broken teeth and other faults, it will produce impact characteristics. Because of the impact
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Application of morphological wavelet and fuzzy entropy in gear fault classification
As one of the key assemblies of armored vehicle transmission system, the gear failure of transmission often leads to the
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Evolution process and dynamic response analysis of gear fatigue pitting
Through the gear contact fatigue test-bed, the evolution process of gear fatigue pitting phenomenon and the vibration response characteristics of
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Stress intensity factor and J-integral of helical gear crack
The finite element software is used to simulate the helical gear with three-dimensional cracks, and the values of stress intensity
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Application of high efficiency cutting tool in engineering gear machining
Using coating technology In the process of construction machinery gear processing, coating technology has a very important application, and 70%
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Experimental study on fatigue pitting corrosion of spur gears
Through the gear contact fatigue test-bed, the evolution process of gear fatigue pitting phenomenon and the vibration response characteristics of
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Application of high efficiency cutting in gear grinding engineering
In the process of gear processing of construction machinery, another important link is gear grinding. In the process of gear
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Application of high efficiency CNC hobbing machine in gear processing of construction machinery
In the process of efficient cutting engineering gear processing, an important solution to solve the low efficiency of automatic production
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Application of high efficiency cutting in gear machining
The concept of efficient machining has been widely used in China’s current automotive industry. However, in the aspect of engineering
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Influence of grinding wheel position deviation on profile of cylindrical gear
Gear mechanism is one of the most widely used transmission mechanism and speed change mechanism in mechanical industry. With the
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Analysis of machining problems of mechanical gear at present
1.Wrong number of gears The number of gears on the outer edge of the gear is called the number of
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Analysis of high precision gear processing technology
The overall structure of gear is mainly composed of tooth surface, tooth circle and tooth. According to different parameters and
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Machining technology of high precision mechanical gear
1.Involute machining technology Involute gear manufacturing is a common manufacturing method for high-precision gear processing in China. Therefore, the relevant
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Finite element analysis of gear shaft in feed box of lathe
In the machining process, each axis of C6136A lathe in the working process, due to the different stress conditions, the
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Strategy of effectively controlling noise of internal gear pump
(1) Control of noise caused by flow pulsation. Through the above analysis of the causes of noise, we can see
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Cause analysis of noise in internal gear pump
(1) Pump flow pulsation causes noise. In the process of operation, the pump is faced with the noise problem caused
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Working principle of internal gear pump
With the rapid development of industrial society, the application scope of internal gear pump is more and more wide, and
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Calculation results of wheel side meshing gear
40CrMnMo is selected as the solar gear and planetary gear. The material is assumed to be isotropic. Next, constraints are
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Finite element analysis of meshing gear of a wheel side gear reducer
For heavy trucks, mining vehicles and off-road vehicles, large transmission ratio is needed, so wheel reducers are needed as the
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Influence of hub deformation on engagement scheme of star gear reducer
In the case of reducing the hole diameter properly, modifying the size of a hole alone can not completely eliminate
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Influence of hub deformation on meshing finite element model of star gear reducer
According to the real structure and the above model simplification method, the author establishes the three-dimensional solid models of internal
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Effect of hub deformation on meshing model simplification of star gear reducer
In fact, there are many parts in the transmission gear train of planetary gear output type planetary gear reducer, the
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Brief introduction of planetary gear reducer with planetary gear output
For planetary gear output type planetary gear reducer, during its operation, the planetary gear not only makes translation around the
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Influence of hub deformation on meshing characteristics of star gear reducer
Star gear transmission is a kind of transmission system with few internal teeth difference and internal translation. Compared with other
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Study on nonlinear dynamic characteristics of two stage planetary gear train
The lumped parameter method is used to establish the “translation torsion” coupling dynamic model of the two-stage speed increasing planetary
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Nonlinear dynamic characteristics of two stage planetary gear train
Compared with single-stage transmission, multi-stage planetary gear transmission has higher efficiency, but its structure is more complex. Multi stage planetary
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Modal analysis of gear transmission shaft considering forced vibration
The modal module is used to simulate and test the transmission shaft structure. As shown in the figure, when using
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Modal establishment of gear transmission shaft considering forced vibration
The gear transmission structure composed of four stage reduction system is selected as the test object, and the gear transmission
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Dynamic simulation analysis of gear transmission shaft considering forced vibration
At this stage, the research on gear transmission structure is mainly concentrated in the field of vehicle transmission, reducer and
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Residual life prediction of gear based on long term and short term memory network
Gear as the transmission device of mechanical equipment, its health has a great impact on the stability and life of
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Preprocessing of finite element analysis model of variable hyperbolic arc gear
The pre-processing of finite element analysis of variable hyperbolic arc gear includes: the selection of element, the setting of analysis
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Finite element model of variable hyperbolic arc gear
In the finite element calculation, the choice of mesh type is very important to the accuracy of the results. According
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Effect of tooth surface roughness on gear transmission system
The rough appearance of the tooth surface is random, and the geometric characteristics of the appearance are related to the
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Interface characteristics of gear pair
The interface characteristics of gear pair refer to the complex composition combination properties formed by the micro geometric characteristics, lubrication