Spectrum analysis method of tractor gear vibration
The comprehensive use of characteristic parameters can make a simple diagnosis of tractor gearbox, that is, to judge whether there […]
Scientific
Scientific
Three stages of fatigue fracture of heavy load transmission gears
The fatigue fracture process of metal materials can be divided into three stages: crack initiation, propagation and instantaneous fracture. In
Scientific
Fatigue crack propagation law formula of heavy load transmission gear
According to the formula, the stress intensity factors Ki, Kii and kiII are mainly used to characterize the stress field
Scientific
Frequency domain characteristic parameter analysis of tractor gear vibration
Through theory and experiment, it is proved that when the tractor gearbox has no fault, the vibration signal energy is
News
Tooth load meshing of spiral bevel gears
Through the load meshing analysis of spiral bevel gear and its simulation with computer, the following conclusions are obtained: 1)
Scientific
Fatigue crack propagation law of heavy load transmission gear
At present, the research on the law of fatigue crack growth mainly uses experimental methods and numerical analysis methods. According
News
Locus of contact center point of spiral bevel gear under load
Taking the number of large teeth of the gear pair as 47 and the number of small teeth as 33
Scientific
Force balance condition of spiral bevel gear
At a certain moment of gear transmission, the locally conjugate tooth profile engages and transmits load. When more than two
News
Pressure distribution of spiral bevel gear
It can be seen from the comparison of tooth surface contact area under no-load and load that there is a
Scientific
Kinematic coordination conditions of spiral bevel gears
In the process of gear transmission, the rotation angle of each tooth of the driven gear can be expressed as:
Scientific
Gear resonance demodulation of tractor gear vibration signal
When the vibration energy is large, such as broken tooth, serious tooth profile error and serious shaft bending, it will
News
Explain in detail the shape of contact area of spiral bevel gear
Taking the spiral bevel gear pair with 39 large teeth and 13 small teeth as an example, the shape of
Scientific
Basic equation of spiral bevel gear transmission
When considering the deformation of gear teeth under load, the basic meshing equation shall be rewritten as: Δ r2、 Δ
Scientific
Meshing modulation of gear vibration in practical work of tractor gears
Various defects will inevitably occur in the process of gear processing, installation and use, such as crack, tooth surface fatigue,
News
Shape of contact area of spiral bevel gear
Taking the spiral bevel gear pair with 47 big teeth and 33 small teeth as an example, when the meshing
News
Load meshing characteristics of spiral bevel gears
Tooth contact analysis (TCA) is an advanced technology to simulate and analyze the tooth meshing process of gear pair by
Scientific
Contact finite element model equation of spiral bevel gear
According to the contact conditions of the contact points, the contact equation of the contact boundary contact point pair can
News
Current situation of fault diagnosis technology for tractor gearbox
Gearbox fault diagnosis technology is also progressing with the development of science and technology and mechanical fault diagnosis technology. In
News
Importance of contact finite element model of spiral bevel gear to finite element calculation
The finite element analysis model is very important for finite element calculation. The models and boundary conditions are different, and
Scientific
Elastic formula of contact finite element model of spiral bevel gear
The two elastic contact bodies Ω 1 and Ω 2 are separated into two independent objects. According to the elastic
Scientific
Diagnostic parameter analysis method of tractor gear vibration amplitude domain
In the vibration characteristic analysis of condition monitoring and fault diagnosis, the characteristic parameter method plays an important role. The
News
Basic forms of tractor gearbox failure
Tractor gearbox not only has the same characteristics and failure forms as other types of gearbox, but also has some
News
Contact finite element model of spiral bevel gear
Due to the limitation of computer conditions, in the early application of finite element method to study gear problems, only
Scientific
Eight node finite element method is used for gear tooth contact
The original 20 node finite element method is adopted, which takes the eight vertices and the midpoint of twelve edges
Scientific
Ideal meshing vibration of tractor gears
Among the various methods of gearbox condition monitoring and fault diagnosis, vibration diagnosis method is widely used because of its
News
Application of wavelet analysis in fault diagnosis of tractor gearbox
Tractor gearbox is a complex device in the basic components of the whole machine, which is composed of gear pair,
News
Eight node finite element method for gear tooth contact
The elastic contact problem is a small deformation boundary nonlinear problem, which is caused by both the change of contact
Scientific
Calculation of initial clearance of spiral bevel gear tooth surface
Spiral bevel gear is point contact in theory. After bearing, the contact area becomes surface contact due to elastic deformation.
Scientific
Optimization of adjustment parameters of spiral bevel gear machine tool
The actual contact part on the tooth surface of a pair of bevel gears under normal meshing operation conditions is
News
Influence of cutting adjustment parameters of machine tool on tooth contact of spiral bevel gear
The cutting adjustment parameters of machine tool play an important role in the tooth contact of spiral bevel gear. How
Scientific
Precision forming technology of bevel gear by cold rotary forging and cad-capp
Based on the systematic theoretical and Experimental Research on the precision forming process of bevel gear cold rotary forging, the
Scientific
Effect of discharge gap on electrode tooth profile in precision cold rotary forging of bevel gear
In EDM, there is a discharge gap between the tooth profile of concave model cavity and electrode tooth profile δ。
News
Tooth shape design of electrode of precision forming tool for bevel gear cold rotary forging
The rotary forging die of bevel gear is composed of concave mold cavity and upper mold swing head. The machining
Scientific
Point contact conjugate transmission of spiral bevel gear
Spiral bevel gear is point contact conjugate transmission. Under light load, the gear pair forms an elliptical contact area near
News
Establishment of gear geometric analysis and mechanical analysis
In the establishment of mechanical model, the gear tooth is simplified as a cantilever beam, and the contact state under
Scientific
Calculation of rotary forging force of bevel gear
The calculation of rotary forging deformation force can provide a theoretical basis for selecting the tonnage of rotary forging machine.
Scientific
Bevel gear cold rotary forging precision forming swing head inclination γ determine
Swing head inclination γ It refers to the included angle between the cone die axis and the fuselage axis. Swing
Scientific
Meshing analysis of spiral bevel gear tooth surface
According to the establishment of coordinate system and spatial matrix transformation, such as the distance from any point of wheel
News
Load contact analysis of gear teeth
Gleason system is the main spiral bevel gear produced and used in China. Gleason gear technology has been the object
News
Historical background of spiral bevel gear research
Spiral bevel gears have been widely used in many industrial fields, such as aviation, automobile, shipbuilding, construction machinery and so
Scientific
Establishment of meshing coordinate system and spatial matrix transformation of spiral bevel gear tooth surface
At present, most of the spiral bevel gears used in China adopt the American Gleason gear system, and its design
Scientific
Rolling ratio spiral bevel gear technology of machining machine tool
i02 is the roll ratio of the machine tool and the process pitch cone of the spiral bevel gear. As
News
NC machining of spiral bevel gear
NC machining is a new technology in spiral bevel gear machining. Because of its great technical difficulty, at present, only
News
Application of cold rotary forging process in precision machining of bevel gear
The precision forming of bevel gear by cold rotary forging is an advanced gear processing technology adopted in recent years.
Scientific
Preparation of preform for cold rotary forging deformation of bevel gear
The preparation of bevel gear cold rotary forging preform needs three steps: forming, softening annealing and lubrication process design. 1)
Scientific
Determination of adjustment parameters of spiral bevel gear meshing machine tool
In the process of spiral bevel gear machining, the large wheel often adopts the generating method and forming method, and
News
Principle of post processing algorithm for spiral bevel gear NC machine tool
In the processing program of NC automatic programming language, the part that transforms the tool path generated in the pre-processing
News
Study on precision forming process of bevel gear by cold rotary forging
As a typical transmission part, gear is widely used in many industries, such as aviation, aerospace, automobile, instrument and so
News
Advantages of hyperbolic gears
In addition to the advantages and disadvantages of spiral bevel gears, hyperbolic gears have the following advantages: 1. Due to
Scientific
Meshing point contact conjugate surface of spiral bevel gear
When two moving surfaces s (1) and S (2 When two moving surfaces s (1) and S (2) are driven,
News
Spiral bevel gear has more advantages than straight bevel gear
Compared with straight bevel gears, spiral bevel gears have the following advantages. 1. The contact ratio is increased, that is,
Scientific
Induced curvature of common roller surface of spiral bevel gear meshing
When two surfaces s (1) and S (2) are completely conjugate, their relative curvature at the contact point is called
News
Classification of spiral bevel gears according to tooth height
Along the tooth length direction, see whether the big end and the small end of the tooth are consistent to
Scientific
Meshing equation of spiral bevel gear
When two tooth surfaces mesh, the two tooth surfaces must be tangent at a point m in space. It can
News
Classification of spiral bevel gears according to the intersecting position of axes
Due to the need of use, the position relationship between the axes of a pair of spiral bevel gears is
Scientific
Relative differential method of spiral bevel gear meshing
Let s (T) be a surface moving continuously in space, u and V are its surface parameters. When expressed by
News
Classification of spiral bevel gears according to the pitch line of tooth surface
Spiral bevel gear is a kind of complicated gear among all kinds of gears. Because of its special tooth profile,
Scientific
Post processing algorithm of five coordinate linkage for spiral bevel gear NC machine tool
According to the processing principle of spiral bevel gear, to process the bevel gear on the NC machine tool shown
News
Research on Machining Theory of Spiral Bevel Gear NC Machine tool
The machining theory of spiral bevel gear is to get rid of the original Gleason machine tool shaking table, eccentric
Scientific
Parameter adjustment of spiral bevel gear pinion machine tool
The machine tool adjustment of the variable method for machining the small wheel is shown in the figure, and the