Common faults, characteristic frequencies and harmonics of gears
The frequency components of gear failure are very complex, which are all broadband signals. According to the introduction of some […]
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F-beginning gear processing vocabulary Chinese English comparison
1． Face acvance 斜齿轮扭曲量 2． Face angle 顶锥角（面锥角） 3． Face angle distance 顶锥角距 4． Face apex 顶锥顶 5． Face apex […]
Scientific
Vibration mechanism analysis of gearbox
1. Generation of gear vibration Gear transmission is through a number of teeth at the end of the previous tooth […]
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Common faults of gears – wear and gluing
1.Wear The wear of tooth surface is caused by metal particles, dust and sand entering into the working surface of […]
Scientific
The choice of die processing and material for gear precision forging
“One fire and two forging” form straight bevel gear. The tooth surface of the gear die is affected by the […]
Scientific
Types and causes of gearbox faults
The gearbox has a certain design service life, and it will fail due to wear after a certain period of […]
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Common faults of gears – pitting
Pitting is a common damage form of closed gear transmission, which usually occurs on the tooth root surface near the […]
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E-beginning gear processing vocabulary Chinese English comparison
1． Ease-off 修正、失配 2． Eccentric 偏心 3． Eccentric angle 偏心角 4． Eccentricity 偏心度 5． Edge radius 刀尖圆角半径 6． Effective bearing […]
Scientific
Development and present situation of Gearbox Fault Diagnosis Technology
At present, oil analysis, noise monitoring, vibration monitoring, nondestructive testing, torsional vibration analysis, temperature and energy consumption analysis are commonly […]
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D-beginning gear processing vocabulary Chinese English comparison
1． Datum tooth 基准齿 2． Debur 去毛刺 3． Decibel (CB) （噪音）分贝 4． Decimal ratio 挂轮比值 5． Dedendum 齿根高 6． Dendendum […]
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Prospect of gear fault diagnosis technology
In the past ten years, with the continuous efforts of researchers, fault diagnosis technology in China has developed rapidly, and […]
Scientific
Gear profile modification
Gear modification is the key technology to reduce the vibration, noise and improve the reliability of gear transmission system. Since […]
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Dynamic model of three ring reducer
These documents do not consider the problem of over constraint and elastic deformation of the mechanism when analyzing the forces […]
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C-beginning gear processing vocabulary Chinese English comparison
1. Case crushing 齿面塌陷 2. CBN 立方氮化硼 3. chamfer 倒角 4. chordal addendum 弦齿高 5. chordal thickness 弦齿厚 6. chuck […]
Scientific
Time invariant / variable model of dynamic nonlinearity of gear transmission system
All the models are developed and established on the basis of the concept of equivalent tooth mesh stiffness, which are […]
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Passive gear failure of large bulldozer
The component with fracture failure is the passive gear of large bulldozer. The heat treatment process is quenching and tempering […]
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B-beginning gear processing vocabulary Chinese English comparison
1． back angle 背锥角 2． Back angle distance 背角距（在背锥母线方向） 3． Back cone 背锥 4． Back cone distance 背锥距 5． Back […]
Scientific
Dynamic linear time invariant / variable model of gear transmission system
Before the s of the th century, gear dynamics was based on the theory of impact. People used meshing impact […]
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Analysis of gear failure by cepstrum analysis
There are two ways to express the amplitude of spectrum: one is in the form of amplitude, which is called […]
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A-beginning gear processing vocabulary Chinese English comparison
1. abrasive tooth wear 齿面研磨磨损 2. absolute tangential velocity 绝对切向速度 3. accelerometer 加速表 4. addendum 齿顶高 5. addendum angle 齿顶角 […]
Scientific
A survey of the study on the dynamics of gear transmission system
Gear transmission is one of the most widely used mechanical transmission forms. It plays a very important role in machinery, […]
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How to choose gear motor
Electric motor is a kind of rotary electric machine, which transforms electric energy into mechanical energy. It mainly consists of […]
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Technological analysis and technical requirement analysis of spiral bevel gear
The spiral bevel gear plays the role of transmitting power and changing speed in the working process. There are rolling […]
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Determine the cutting parameters and machining allowance of each process of spiral bevel gear
1.Axle neck and back cone Since the whole part is machined as an outer round end face, all journals can […]
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The mechanical model analysis of gear
As shown in Figure 1, is the mechanical model of the gear pair, in which the gear has a certain […]
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Common faults of gears – broken teeth
Tooth breakage is the most common fault of gear. The fracture of gear teeth usually occurs at the root of […]
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Look at the answers to these industrial gear questions. Is there anything you need?
What is non-standard installation center distance? What are the features of non-standard installation? Answer: a pair of meshing transmission gears, […]
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The gear manufacturer tells you how to process the gear
There are many processing methods of gear, but the main methods are gear hobbing, gear shaping, shaving and gear grinding. […]
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Frequency domain method for gear fault diagnosis
Among all kinds of gear fault diagnosis methods, the gear fault diagnosis method based on vibration detection has the advantages […]
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Gear steel and gear heat treatment
Gear steel Steel C, is, man, Cr, Ni, Mo, Ti, 42CrMo: 0.38-0.45, 0.17-0.37, 0.50-0.80, 0.90-1.20, ≤ 0.30, 0.15-0.25. 20CrMnTiH: 0.17-0.23, […]
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The failure form of gear teeth
1.Pitting on tooth surface Most of the pitting occurred on the root surface near the pitch line. Tooth surface pitting […]
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Design of clamp for spiral bevel gear
Process dimension analysis of fixture It is very important to fix the fixture in the process of machining. When the […]
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The rack and pinion drive
1, Rack A flat or straight bar is called a rack when it has a series of equally spaced teeth. […]
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Process flow chart of spiral bevel gear
Number Procedure Machine 1 forging 2 heat treatment normalizing 3 Milling two end faces and […]
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Straight bevel gear and its transmission
Straight bevel gear The gear whose indexing surface is a conical surface is called a bevel gear. According to the […]
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Determination of technological process of spiral bevel gear
Process analysis: the processing of spiral bevel gear is mainly divided into the following stages: 1) Gear blank machining: the […]
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Helical cylindrical gear and its transmission
Helical cylindrical gear The cylindrical gear whose tooth line is helix is called helical cylindrical gear, which is abbreviated as […]
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Selection of the datum and determination of the precision of the spiral bevel gear
1) Selection of rough datum According to the principle of selection: (1) Principle of non machined surfaces. (2) The principle […]
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Calculation of geometric dimension of involute standard spur gear
Geometric dimension calculation of standard spur gear Name Code Calculation formula Tooth shape angle α 20 ° for standard gear […]
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Analysis and design of the processing procedure for spiral bevel gear
Selection of blank, determination of dimension and accuracy· Determination of blank type: generally, 20grmnti alloy steel is used for automobile […]
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Basic parameters of involute standard spur gear
Names of gear parts 1.Cogging: the space between two adjacent cogs on a gear. 2.Addendum circle: the circle at the […]
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Description of involute profile of the most complete gear transmission
The basic requirements of gear transmission for tooth profile curve First, the transmission should be stable; second, the bearing capacity […]
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The function of spiral bevel gear
Spiral bevel gear is one of the main parts of machine parts, which is used for motion and power transmission. […]
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Structure characteristics of pitchgear hob
At present, all gear hobs are Archimedes, and the basic worm is Archimedes worm. This kind of hob is similar […]
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Single head worm gear hob and multi head worm machining
Because it is difficult to manufacture the multi head worm gear hob, and it is not easy to manufacture accurately, […]
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Type and application of gear transmission
I. Concept Gear mechanism is composed of gear pair to transmit motion and power. 2、 Type of gear drive There […]
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Determining the modification coefficient of two gears
① ② Selection of normal face modification coefficient of pinion Selection principles: (1) when the hardness of the gear surface […]
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Comparison between single head hob and multi head hob
In pitchgear machining, full cut hob is often used. Although the cutting amount of hob increases, the cutting force will […]
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Calculate the pressure angle of dividing cylinder, base cylinder and pitch cylinder, normal surface and end pitch circle of gear
① Spiral angle of two gears: β1=0.5×（Σ-1） β2=β1 ② Two gear indexing cylinder helix angle: ③ Two gear base cylinder […]
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Comparison between full cut and non full cut hobs
The essence of worm gear hob is a worm meshed with the worm gear to be machined, but its outer […]
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Assembly of planetary gear transmission with small tooth difference
The involute planetary gear reducer with small tooth difference has been developed recently, and its application range is gradually expanding, […]
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Design of helical gear transmission based on MATLAB
1.The establishment of the mathematical model of gear transmission design generally includes three parts: (1) design variables: the basic geometric […]
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Design principle of gear hobbing fixture
When the accuracy of machine tool and hob meet the requirements, the fixture manufacturing and installation accuracy are the main […]
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Force analysis of helical gear
The figure shows a pair of helical cylindrical gears. If the friction between tooth surfaces is omitted, the normal force […]
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Necessary conditions for the operation of gear drive chain
Gear transmission mechanism with large transmission ratio is often composed of many single-stage gears. The sum of these gears and […]
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Advantages of cepstrum analysis in gear fault diagnosis
Cepstrum analysis plays a special role in gear fault diagnosis, especially in side band analysis. Because the frequency spectrum of […]
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Effective measures to solve carburizing defects of gears
(1) Strengthen the gear cleaning before carburizing Generally, the material for making gear is metal material. In order to prevent […]
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Amplitude modulation of industrial gears
All kinds of faults of gears are embodied in a transmission error in operation, that is, the difference between the […]
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Basic design of helical gear drive system
In the optimization design of mechanical design, the methods of advance and retreat, golden section method, conjugate gradient method, coordinate […]
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Fracture failure of bevel gear
The 18crmnti material is used for bevel gear of car. After carburizing and quenching, it is tempered at low temperature. […]