Research on the knock dynamics of automobile transmission gears
With the rapid development of the automobile industry, automobile users have higher and higher requirements for the comfort of automobile […]
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Analysis of the thermal characteristic simulation results of the gear shaft shoulder
Because the bearing and gear of the gear transmission mechanism will produce a lot of heat in the process of
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Selection of motorcycle gear materials
Gear is one of the most widely used components in mechanical transmission system. Its main function is to transfer power
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Analysis of the factors influencing the contact stress of gear shaft shoulder
The load conditions of the gear assembly mainly include three aspects: the pre tightening torque applied on the tightening nut,
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Numerical simulation analysis of fretting characteristics of gear shaft
The equivalent stress distribution of the gear assembly and the gear shaft is shown. It can be seen from the
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Contact fatigue analysis of carburized helical gear
1.Finite element modeling of helical gear The basic idea of establishing carburized helical gear under ANSYS is to first establish
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The tooth surface equation of profile generating rack of variable tooth thickness helical gear
1.Normal profile of profile rack The variable tooth thickness helical gear is generated by the envelope of the generating rack.
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Modeling of gear components under complex working conditions
In the finite element method, the continuum structure is considered to be composed of finite elements connected by finite nodes.
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Theory of gear shaft fretting diagram in transmission system
The running state of fretting wear is not only related to the yield strength, material rigidity, elastic modulus and elastic-plastic
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Worm cutter cutting and grinding gear
Due to the low efficiency and precision of gear shaping, which can only cut the soft tooth surface gear, it
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Design and transmission performance analysis of circular arc tooth line cylindrical gear reducer
There are many problems in traditional reducers, such as large volume, high quality, low efficiency and high noise when the
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Load distribution between traction gears of locomotive based on meshing stiffness
For the gears whose coincidence degree is between (1 ~ 2), the meshing process is always in the alternating meshing
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Three body theory of gear shaft fretting wear in transmission system
According to the three body theory of fretting wear, the formation and evolution of wear debris are produced simultaneously and
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Three dimensional modeling of circular arc gear and reducer
According to the forming principle of the circular arc tooth line cylindrical gear, in theory, the circular arc tooth line
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Stiffness calculation of locomotive traction gear based on meshing stiffness
According to the definition of gear stiffness: It can be seen that the deformation of gear teeth has a linear
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The gear shaft of transmission system is one of the most important components of power transmission in complex power equipment
The gear shaft of the transmission system is one of the most important components of power transmission in the complex
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Early theory of gear shaft fretting wear in transmission system
Fretting refers to the micro relative motion of the closely matched contact surface in the mechanical parts under the action
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The main reason of torsional vibration instability of gear transmission shaft of rotating machinery
(1) The transmission system of rotating machinery produces torsional vibration when it bears impact load. The main transmission system of
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Development prospect of gear hobbing technology
With the rapid development of information technology and material technology, many new technological achievements have appeared in the field of
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Transmission error of hypoid gear under small load
It can be seen from the calculation model of gear mesh stiffness that before calculating the gear mesh stiffness under
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Principle of electronic gearbox
The “electronic gearbox” was put forward by the British in the s. The purpose is to replace the mechanical transmission
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Research on the difficulties and key technologies of Hobbing
For a long time, short life, poor reliability and heavy structure have become the three major problems restricting the development
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The influence of the blank shape on the height and pitch of the workpiece in the process of cross wedge rolling
The influence of billets on the forming of rolled pieces is studied. The rolling experiments are carried out on the
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Contact test experiment of face gear
1. Face gear tooth surface contact detection machine According to the parameters of the face gear, the corresponding face gear
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Semi digital and full digital control of gear shaping
Semi digital control of spiral gear shaping The so-called semi digital control refers to the use of digital differential chain
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Experimental study on forming process parameters of cross wedge rolling helical gear shaft
All kinds of helical gear shafts are components that transmit motion and power, and are used in many mechanical or
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Contact simulation of face gear
1. Meshing parameters of face gear The meshing parameters of face gear are: modulus M = 5, pressure angle
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Research on CNC machining of spiral bevel gear shaping
With the development of electronic technology, computer control technology and numerical control technology, the full digital control of gear shaping
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The influence of die helix angle on workpiece during cross wedge rolling
The helix angle of the forming section of the three working conditions is different. The B2 blank in Table 1
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Modification of long gear shaft machined by gear hobbing machine
Gear shaft and spline shaft are common parts in mechanical equipment. In the mechanical equipment of metal processing, gear hobbing
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Fracture analysis of 40Cr steel gear shaft
40Cr steel gear shaft is the transmission part of small mechanical equipment. Because the gear shaft must bear large torque
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Analysis of meshing and interference of tooth surface in parallel connecting rod method and rotation method of spiral cylindrical gear
In order to use three-dimensional model to analyze the meshing of the arc tooth cylindrical gear formed by the two
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Machining method of helical gear: hobbing and shaping
There are many methods of gear machining, such as casting, stamping, overstock and cutting, among which the cutting method is
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Determination of contact area of face gear transmission
In face gear transmission, the curvature radii of cylindrical gears on two orthogonal planes are 1k1 () and K2 ()
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Experiment on load capacity of unsymmetrical spiral bevel gear of mine reducer
Through theoretical calculation and finite element analysis, the bearing capacity of the double pressure angle asymmetrical spiral bevel gear with
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Mathematical statistics and machining pre quantity of distortion law in gear manufacturing process
1. Statistics of distortion data The distortion of batch gear production has statistical characteristics. In the mass production of gears,
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Ultrasonic nondestructive testing technology for large cast steel gears
Ultrasonic testing technology is a common method in the internal quality testing of large steel castings. Because of many defects
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Analysis of abnormal fracture failure of large induction hardening cast steel gear
A large-scale induction hardening cast steel gear used in a 100 ton crane of an iron and steel company had
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Graphical description of tooth surface, conjugate tooth surface and contact line of tooth surface
This paper analyzes the tooth surface equation, conjugate tooth surface equation and tooth surface contact line equation of involute arc
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Forming principle of helix of helical gear
The tooth profile of the helical gear is involute on the end face, and in the tooth length direction, it
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Contact locus equation of meshing point of face gear
In the meshing transmission, the rotation angles of the cylindrical gear and the face gear are 1 and
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Machining of asymmetric spiral bevel gear with double pressure angle for mine reducer
From the point of view of meshing mechanism and gear characteristics, due to the change of pressure angle of gear
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Geometric parameters of involute arc tooth cylindrical gear
Cylindrical gear transmission is one of the most widely used transmission methods in gear mechanism. At present, it has three
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The forming principle and transmission characteristics of helical gear tooth profile curved surface
The helical gear is used to transmit the rotary motion between the parallel axis and the staggered axis, and the
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Welding repair technology for defects of cast steel gears
The welding repair process is suitable for repairing casting defects such as pores, sand holes, slag inclusions, cracks (cold and
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Tooth surface equation of face gear
Face gear transmission is a kind of gear transmission in which the cylindrical gear and the bevel gear are meshed.
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Meshing principle of unsymmetrical spiral bevel gear for mine reducer
At present, the focus of mining equipment is to lightweight, and the structure of mining mechanical reducer has a significant
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The modification method of tractor gear tooth direction
Tooth profile modification is usually the shape of the drawing, that is, “drum tooth”. Tooth profile modification can be divided
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Reasonable selection of materials to effectively avoid gear failure
It can be seen from the analysis that the material of gear is the most fundamental cause of gear failure,
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Classification of spiral bevel gears
The production of spiral bevel gears plays an important role in the modern machinery manufacturing industry. Because of its large
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Brief introduction of optimization design method of automobile transmission gear
In the shift process of the manual transmission, the performance required by the shift gears of different gears is not
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The method of precise modification of tractor gear profile
1. Shaving before heat Practice shows that concave phenomenon often occurs in the direction of tooth height during shaving. There
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The cause of gear failure of agricultural tractor
The phenomenon that a part loses its specified function is called failure. The main forms of parts failure can be
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Control of gear distortion by pressure quenching in gear manufacturing
The low life of the bevel gear of automobile rear axle in China is always a big problem. There are
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Study on Optimization of gear parameters of automobile transmission
With the development of automobile towards high performance, gear system should meet the requirements of high efficiency, high reliability, high
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Modification of tractor gear profile
There are many methods of gear profile modification. According to the accuracy requirements of gear and gear batch, choosing the
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The significance of limiting hardenability in gear manufacturing to reduce distortion
1. Test to limit the effect of steel hardenability on distortion 1) Sample The test adopts two sizes of disk-shaped
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Research significance of gear parameter optimization of automobile transmission
In general, mechanical system is composed of power system, transmission system and executive system, in which the power system provides
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Research and application of tractor gear shaping technology
Due to the influence of manufacturing and installation errors, gear elastic deformation and thermal deformation, gear transmission will produce impact,
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Effect of hardenability of steel on distortion in gear manufacturing
The metallurgical factors of steel, such as grain size, non-metallic inclusions, banded structure, hardenability, etc., have an impact on the