Current problems in the study of gear drive system dynamics
After nearly a hundred years of continuous exploration and research, the dynamics of gear transmission system has developed into a […]
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Operation monitoring of wind power gearbox
The performance of the wind power system depends to a certain extent on the operation of the wind power gearbox.
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Rolling impact calculation conclusions for modified helical gears
(1) After tooth surface modification, under a small load, the clearance between the teeth of the latter pair is sufficient
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Rolling impact calculation of helical gear
Based on the proposed calculation method of meshing impact force, the optimum profile design of small gear tooth surface with
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Assembly combination of double gear pairs
(1) The large gear is heated in the heating furnace. The heating temperature is controlled at 120 C for 3
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Development of Dynamic Gear Profile Modification at China and Abroad
With the increase of speed of gear transmission system, more and more attention has been paid to the research of
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Current situation of profile modification of involute spur gear drive system at China and abroad
Abroad, it is first pointed out that the load of the gear changes in a stepped manner. This method can
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Application of Bearings in Fan Gearbox
Bearing is a key part in the gear box, if there is a problem with the bearing, the gear box
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Rolling impact mechanism of modified helical gear
Under ideal conditions, the normal line of the standard involute tooth surface follows the direction of the theoretical engagement line
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Profile modification of involute spur gear drive system
Gear modification is a key technology to reduce vibration, noise and improve reliability of gear transmission system.Since the tooth profile
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Fan gear box lubrication
Lubrication of gear box is very important to the operation of gear box, especially the position of bearings, gear meshing
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Processing of double gear pair large gear
(1) Big gears need to be pre-grinded after carburizing treatment, in order to eliminate heat treatment deformation before machining locating
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Development status of fan gearbox
Wind power gearbox is the key part of wind power generator. With the development of wind power, wind power gearbox
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Angular positioning groove machining of double gear shaft
(1) After grinding the teeth of the gear shaft, the locating groove is machined as shown in the figure. (2)
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Nonlinear dynamic meshing stiffness of fixed-shaft gear drive
When calculating meshing stiffness by quasi-static method, fixed constraints are generally imposed on the center position of each gear and
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Vibration characteristics test of spur gear drive system
The experimental study on gear transmission system can repeat the same test condition several times, thus helping researchers to find
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Nonlinear dynamic meshing model of involute spur gear drive
For involute spur fixed-shaft gear drive and planetary gear drive respectively, a nonlinear dynamic model of yaw-torsion coupling was established
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Technical improvement of large-size and high-precision spiral bevel gears
The design of side gears and hypoid gears is the same as that of arc gears and hypoid gears. The
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Non-linear time-varying model of spur gear
In fact, the engagement parameters such as engagement angle, clearance and time-varying rigidity of gears are affected to some extent
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Dynamic Models of Spur and Planetary Gear Drives
For involute spur gear drive and planetary gear drive, the yaw-torsion coupling non-linear dynamic model including the dynamic changes of
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Process analysis of double gear pairing
(1) To meet the high requirement of gear accuracy, foreign high-precision gear grinder is used for gear grinding. Specifically, German
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Nonlinear vibration characteristics of spur gear drive system
Nonlinear factors such as backlash and time-varying meshing stiffness inevitably exist in gear meshing process, which belongs to the research
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Non-linear time-varying model of spur gear drive system
Before 1950s, gear dynamics was based on impact theory, and meshing impact was used as the basis to describe and
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Processing technology of double gear pairing
Double gear is widely used in gear boxes. In general transmission, it is not required to align the teeth.However, this
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High-precision spiral bevel gear machining technology
Gears as high as arc wheels are also called arc wheels. From the side, they show a flat gear shape.
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Technological innovation of cylindrical gear machining
In modern machinery, gear transmission is the most widely used mechanical transmission mode. Its function is to transmit the motion
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Machining Technology of Large Size and High Precision Spiral Bevel Gear
Processing principle of spiral bevel gear: the analog wheel is the processed gear, the uniform chuck is the teeth of
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Principle Analysis of Contact Zone Correction of Klingenberg Helical Gear
Correction in the contact area of the Klingenberg helical gear teeth can be achieved by changing the following parameters: (1)
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Principle of internal and external gear synchronous multi motor
According to the principle of internal and external gear synchronous multi motor, an external involute gear is set in a
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Machining large-size and high-precision spiral bevel gears
Large diameter spiral bevel gears are mainly used for large reducers in mineral, metallurgical, petroleum and other industries. With the
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Testing of other components of main helical gear
Differential housing inspection (1) Hardness: 207HB. Metallographic structure is pearlite + reticulate ferrite. Grain size is more uniform. A few
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Correction Principle and Points for Attention of Contact Zone of Klingenberg Helical Gear
In order to correct the contact area of Klingenberg helical gears during machining, a double-layer cutter head is required. The
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Double internal and external mesh gear multi motor
With the development of society, mechanization is becoming more and more popular, and the level of automation is increasing. Because
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Gear manufacturing level and gear box optimization design
The performance and stability of gearbox come from the level of design and manufacture of gears. For the manufacture of
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Machining Technology of Large Size and High Precision Spiral Bevel Gear
Spiral bevel gears are key parts in mechanical transmission field that transmit motion or power between intersecting or staggered shafts.
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Detection of secondary helical gear teeth
Analysis: (1) The hardened layer of tooth surface has fine martensite structure of grade 2 and non-martensite structure of 0.02mm,
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Right traction gear of electric traction shearer
Electric traction shearer is a multi-motor driven shearer with transverse arrangement of motors and normal speed of mining adjusted in
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Six-circle arc profile helical gear
Circular arc helical gear is a point engagement gear, which has the advantages of high bearing capacity, long service life
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Trial production and test comparison of adjusted helical gear pump
A set of helical gears with a displacement of 30 ml / R are processed according to the adjusted curve.
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Failure Analysis of Main Helical Gear Pair of Through-drive Axle for a Three-axle Special Vehicle
For a type of three-axle special vehicle, two identical failures occur continuously, and the driving distance after sale is less
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Correction of contact area of Klingenberg spiral bevel gear
The Klingenberg spiral bevel gear is the manufacturing equipment and technology introduced by our gear factory in the 1980s by
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Simulation Research on Gear of Helical Gear Pump
A group of suitable parameters are selected for simulation to obtain the toothed curve as shown in the figure. Through
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Helical Gear Differential Assembly with Locking Function and Function Description
Assemble the parts in SolidWorks to form an assembly of helical gear limited-slip differential with locking function as shown in
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Verification of Deformation Characteristics during Hot Precision Forging of Cylindrical Helical Gears
In order to verify the reliability of finite element simulation results, a coordinate grid test was carried out on a
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A spiral gear pump
At present, the product application of gear pump has been very wide.The structure of gear pump generally includes two spur
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Helical Gear Limited Slip Differential with Locking Function
Military off-road vehicles need good passability to adapt to complex road surfaces.The ordinary planetary gear differential has simple structure. Although
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Establishment of Heat Transfer-Deformation Coupled Finite Element Model for Cylindrical Helical Gear
Accurate three-dimensional geometric model of cylindrical helical gear is the precondition of establishing heat transfer-deformation coupling finite element model.The basic
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Failure Analysis of Broken Tooth of Large Helical Gear of Loader Drive Axle
During the installation test of a large helical gear of a loader drive axle during its development, it was found
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The future development trend of gear anti fatigue manufacturing technology
The development of gear machinery manufacturing industry in the world can be divided into three stages according to the characteristics
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Division of Tooth Deformation Stages during Hot Precision Forging of Cylindrical Helical Gears
The figure shows the load stroke curve of the cylindrical helical gear during hot forging.At the early stage of forming,
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Tooth Deformation Law of Cylindrical Helical Gear during Hot Precision Forging
Cylindrical helical gears are widely used in ship, automobile, aviation and other industries because of their smooth transmission, good engagement
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Accurate modeling of time-varying meshing stiffness of spur gear pair based on geometry and potential energy method
In mechanical transmission system, gear transmission system is the most widely used in power and motion transmission devices.Time-varying meshing stiffness
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China has a class 1 precision standard gear
In many important fields such as industrial production, aerospace and military equipment, precision gear processing technology plays a key role,
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Residual stress on tooth surface of spur gear forming grinding
Forming grinding of spur gears is to trim the grinding wheel into an outer profile exactly the same as the
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Online measurement of spur gears using machine vision
Gear is one of the most important parts in modern industrial production. In mass production of gears, on-line measurement and
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Contact temperature of spur gears
Gears are widely used in mechanical transmission. Due to the existence of tooth friction, the tooth contact temperature of the
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The main reducer of a helicopter’s coaxial gear split torsional transmission
The overall configuration of the main reducer of a helicopter’s coaxial gear split torsional transmission is shown in Figure 1.
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The load sharing of the cogwheel of a helicopter
The coaxial gear split torque drive is a new type of helicopter main reducer. The enhanced rotorcraft drive system program
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Gearbox gear of agricultural machinery tractor based on knowledge
Due to the crisis of aging population and the sharp decrease of agricultural labor force, China attaches more and more
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Advantages of gear transmission in civil aircraft engines
In order to reduce the unstable factors, the designer thought of the gear transmission technology, which is different from the