Establishment of numerical model for pitting corrosion process of gear in lubrication contact
Based on ABAQUS software, contour integral and MTs criterion are used to simulate the process of pitting corrosion crack propagation […]
Scientific
News
Analysis on forging crack of a fuel gear pump shell
Fuel gear pump is a kind of product that relies on the change of working volume formed between the pump […]
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Selection of cutter face form of scraping cutter head for spiral bevel gear
A Rake face selection Generally, tool regrinding is carried out on the rake face. The scraping cutter head is a […]
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Precision improvement of laser tracking measurement for super large gear
In industry, the gear with diameter over 3000mm is called super large gear, which is the most widely used transmission […]
Scientific
Analysis of experimental results of shearer rocker gear fault
The vibration data of each state of gear under 50% load is selected for experiment, and the sample length is […]
News
Calculation of chord tooth thickness and chord tooth height of double circular arc gear drive by Newton iteration method
Our country began to study the double circular arc gear from the mid-1960s, but entered the substantive research, test and […]
Scientific
Fault data acquisition of shearer rocker gear
The working environment of shearer is bad, and the gear fault data of rocker transmission system is not easy to […]
Scientific
Prediction of RBF neural network model for planetary gear
1. Training data validation The 90 groups of trained samples are predicted by the RBF neural network established. Fig. 1 […]
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Using CAXA to figure out the proper measuring ball diameter of helical gear
In the manufacture, inspection and design of gears, the span of measuring ball is widely used to measure the tooth […]
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Formation mechanism of micro pitting corrosion of gears and normal and tangential load conditions
Under the condition of non lubrication, according to Hertz theory, the contact geometry of gear tooth surface can be transformed […]
Scientific
Influence of speed and load on meshing force and frequency coupling of planetary gears
The rotational speed of P10 row is set at 3 000 R / min, and the load of P20 row […]
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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 […]
Scientific
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. […]
Scientific
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 […]
News
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 […]
Scientific
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 […]
News
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 […]
News
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 […]
Scientific
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 […]
News
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 […]
Scientific
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 […]
Scientific
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 […]
News
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: […]
Scientific
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 […]
News
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, […]
Scientific
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 […]
News
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 […]
Scientific
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 […]
News
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, […]
Scientific
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 […]
News
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 […]
News
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 […]
News
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 […]
Scientific
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 […]
News
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 […]
News
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 […]
Scientific
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 […]
Scientific
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 […]
News
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 […]
Scientific
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 […]
Scientific
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 […]
Scientific
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 […]
News
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 […]
News
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 […]
News
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, […]
Scientific
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 […]
News
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 […]
Scientific
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 […]
Scientific
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 […]
News
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, […]
Scientific
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 […]
News
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 […]
Scientific
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 […]
News
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 […]