Spiral bevel gear is the most widely used spiral gear in production
Spiral bevel gear is the most widely used spiral gear in production. Because it has the characteristics of stable transmission, […]
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Formation mechanism of micro pitting corrosion of gears
In the process of gear transmission, the maximum shear stress caused by repeated rolling sliding contact leads to the plastic
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Expression of meshing force of parallel planetary gears
The connection form of parallel coupling planetary gear is shown in Figure 1, and each row has two parts connected.
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Floating track of sun gear in planetary gear transmission system
Under the same basic working condition, the floating track of the sun wheel under three kinds of fault factors is
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Micro pitting damage of lubricated contact gear based on contour integral
In the process of gear transmission, if it can not get good lubrication, a lot of micro pitting corrosion pits
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Dynamic analysis of planetary gear transmission system with sun gear failure factors
1. Simulation of planetary gear transmission system under fault free condition Using the established planetary gear dynamic model, when all
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Residual life prediction of gear based on deep belief network integration
Due to the influence of alternating stress, the gears in many equipment often have the faults of tooth surface wear
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Fault diagnosis of shearer rocker gear based on depth residual network
Shearer is one of the core equipment of coal mining face. Rocker arm is the key power component of shearer
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Fatigue crack life analysis of internal meshing modified gear
After the completion of the first propagation, the stress intensity factor is calculated, and the second crack propagation is carried
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Gear fault diagnosis based on multi scale fuzzy entropy
As a common part of mechanical equipment to transmit power and motion, gearbox has been widely used in modern mechanical
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Life analysis of internal meshing modified gears with cracks
ABAQUS software and FRANC3D software will be used to analyze the fatigue life of internal gear plate crack [4-6]. The
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Finite element analysis of internal modified gear
Because the working condition of the gear is the same when the inner gear plate and the outer gear contact
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Establishment of RBF neural network prediction model for planetary gear
1. Input and output of neural network The analysis of meshing force of parallel coupled planetary gear includes five factors:
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Dynamic analysis of internal modified gear
According to the mechanical model of internal gear pair and gear dynamic model, the dynamic model of internal modified gear
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Dynamic meshing force analysis of parallel planetary gear based on RBF neural network
The coupling phenomenon of meshing force often appears in the dynamic response of coupled planetary gears. In previous scholars’ research,
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Establishment of internal modified gear model
The three ring drive mainly adopts the internal meshing angle modified gear, so the construction method of modified gear is
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Design and Simulation of tractor gear system
Dongfanghong tractors produced by Luoyang No.1 tractor manufacturing plant of China are very important traction equipment for farming, harvesting and
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Experimental data validation of planetary gearbox
The effectiveness of arcmde features is verified by using the fault simulation experimental data of planetary gearbox. As shown in
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Design and Simulation of tractor gear system
In modern product design, the traditional experience design, analogy design and static design can not meet the needs of engineering,
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Multi scale dispersion entropy of planetary gear crack
DE is an index to measure the complexity or irregularity of time series, which has the advantages of high calculation
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The effective solution to the problem of gear broken in mining machinery
1. estimate the load bearing capacity of the mechanical gear in advance. In fact, the load bearing capacity of the
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The reason of mechanical gear breaking under eccentric load
In fact, there are many reasons leading to the problem of eccentric load and broken teeth of mechanical gears. The
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Influence of accuracy characteristics of machine tool on large gear error
From the configuration principle, the accuracy characteristics of such machine tools can be obtained: ① The tooth profile error is
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Simulation verification test of noncircular gear stepless speed regulation
1. Construction of experimental platform In order to verify the correctness of the design of non-circular gear, the differential equation
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This paper studies the causes of static broken teeth of mechanical gears
In the mining work, the actual working environment is very poor, the working equipment is not perfect, so the gear
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Analyzes the causes of fatigue fracture of mechanical gears
In fact, the so-called fatigue tooth breaking problem is that the mechanical gear breaks, and the whole spur gear will
Scientific
Simulation verification of noncircular gear stepless speed regulation
1. Modeling of non-circular gear stepless speed regulation mechanism This design mainly lies in the research of the output speed
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Parameter matching design of noncircular gear
Due to the different speed ratio characteristics of non-circular gears with different parameters, the design and processing of non-circular gears
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Optimization of machining process of mechanical gear
Although the strength of mechanical gear bearing capacity does not entirely depend on gear hardness, improving gear hardness is still
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Branch matching design of noncircular gear
From the application characteristics of the stepless speed regulating mechanism, it can be seen that the non-circular gear stepless speed
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Optimization of mechanical gear design
Because the mechanical operation is mostly heavy load, medium and low speed transmission, most of them start frequently and often
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Pitch curve design of noncircular gear pair
According to the structural relationship of the non-circular gear stepless speed regulation mechanism shown in Fig. 1, as the generation
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Material selection and processing technology of mechanical gear
1. Material selection of mechanical gears Other countries in the world mainly use Cr Ni and Cr Ni Mo carbon
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Principle of noncircular gear stepless speed regulation
As shown in Figure 1, the non-circular gear stepless speed regulation mechanism mainly includes two parts: the non-circular gear speed
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Material selection and design optimization of mechanical gear
Gear is a kind of mechanical element with continuous meshing transmission of motion and power on the rim, which plays
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Finite element analysis of noncircular gear
Due to the removal of part of the mass, especially the thinning of the tooth thickness, the load-bearing capacity of
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Effect of adjustment parameters of machine tool cutting on tooth contact of spiral bevel gear
The adjustment parameters of machine tool cutting play an important role in the tooth contact of spiral bevel gear. How
Scientific
Optimization design of noncircular gear
Let the mass of non-circular gear be m and the speed be m ω， The angular acceleration is ε， If
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Dynamic characteristics of planetary gear transmission system with sun gear failure
Planetary gear transmission system has the advantages of stable operation, high bearing capacity and high transmission ratio, so it has
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Fatigue performance of internal meshing modified gears with cracks
Gear drive is widely used in heavy industry and manufacturing industry, and is often used as reducer, speed increaser, differential,
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Force analysis of driving gear of starting motor
1. Principle of starting motor driving gear to start engine The starting motor of internal combustion engine is to convert
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Reliability optimization of transmission gears for flying vehicles
The traditional concept is that flying vehicle is a land and air amphibious vehicle with the functions of flying in
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Metallographic examination and analysis of driving gear of engine starting motor
1. Gear crack morphology After cutting, grinding and polishing, the fault gear was detected under the optical microscope. The crack
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Characteristics of noncircular gear stepless speed regulation
Since the relevant research of gear pair entered the right track in the 17th century, many scholars at home and
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Fracture analysis of driving gear of engine starting motor
The fracture of the driving gear is due to the looseness of the fastening nut of the starting motor gear,
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Fracture analysis of driving gear of engine starting motor
The starting motor drive gear material is 20CrMnTi, and the heat treatment process is normalizing quenching and tempering carburizing quenching
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Adhesion wear of involute spur gear at low speed
Adhesive wear is the most common fault type on the working surface of mechanical system, which often occurs on the
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Simulation calculation and result analysis of involute spur gear under low speed condition
1. Simulation method validation In order to verify the simulation model, the minimum oil film thickness is far less than
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Fracture analysis of driving gear of starting motor
It is concluded that the fracture of the driving gear is due to the looseness of the fastening nut of
Scientific
Wear prediction model of involute spur gear at low speed
1. Basic wear model In the meshing process of gear pair, the relative sliding and rolling occurs between the meshing
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Force analysis of driving gear of starting motor
1.Principle of starting engine with starter motor driving gear The starting motor of internal combustion engine is to convert electric
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Load distribution coefficient model of involute spur gear at low speed
When involute spur gear works, it has to go through the process of single tooth meshing and double tooth meshing
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Main influence factors of gear heat treatment deformation
In the process of gear heat treatment, due to various environmental factors and other external factors, gear deformation occurs. According
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Causes and control methods of gear heat treatment deformation
Gear is the main work piece in mechanical transmission, and it is also an important force unit. Due to the
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Measurement of tooth profile error of straight involute gear
Based on the generating principle of base circle involute, the tooth profile measurement method of involute gear is proposed °
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Kinematic geometry measurement concept of gear accuracy
Gear kinematic geometry measurement technology is a kind of technology to study and realize gear geometric error measurement from the
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Accuracy measurement of involute profile of gears
Around 1920s, people began to discuss the problem of gear accuracy measurement. In 1922, Switzerland applied for the patent of
Scientific
Vibration mechanism of planetary gearbox
Planetary gearbox is mainly composed of central shaft, planetary gear and sun gear. In the gearbox fault, the probability of
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Research on fault diagnosis of gearbox
As a device that can effectively change the speed and transfer power, gearbox is widely used in various types of
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Tooth surface detection formula of hourglass worm gear
Let the circumferential matching angle between the measuring coordinate system and the theoretical coordinate system be φ P. Then the