Test results and discussion of ferrous powder metallurgical gears
1. Gear Fracture and Analysis According to user feedback, the gear breaks under heavy load and the fracture occurs in […]
Scientific
Scientific
Scientific
Sample preparation and test method for ferrous powder metallurgical gears
A gear tooth with fracture failure was randomly selected for fracture analysis. The fracture was cut off by wire cutting […]
Scientific
The stress and distortion of gear manufacturing in heating
Generally, the heat treatment distortion of the controlled workpiece is focused on “quenching distortion”. The reason is that the quenching […]
Scientific
The conversion of cutting movement of spiral bevel gear
According to the analysis of the cutting process of spiral bevel gear tooth surface, based on the generation principle of […]
Scientific
Meshing force of planetary gear drive system under continuous operation with large load
The meshing frequency and its double frequency of each pair of wheels constitute the main vibration excitation components of the […]
Scientific
Design and motion analysis of cutter for three-axis milling of spiral bevel gear
Based on the analysis of the cutting principle of the tooth surface of the spherical involute involute involute spiral bevel […]
Scientific
Meshing force of planetary gear system under large load
The dynamic load of the system is calculated when the speed is 500r / min and the load is 500N […]
Scientific
The cutting principle of concave tooth surface of spiral bevel gear based on the generation line of tooth surface
This paper takes the concave tooth surface of right-hand spiral bevel gear as an example to analyze and study the […]
Scientific
Impact vibration characteristics of planetary gear train
Planetary gear drive is widely used in various industrial fields due to its large power weight ratio, high load-carrying capacity […]
Scientific
Generating principle of convex tooth surface of spiral bevel gear
In order to intuitively analyze the generation principle of right spiral bevel gear convex tooth surface, the method of establishing […]
Scientific
Machining method of spiral bevel gear
There are two main machining methods of spiral bevel gears, forming method and generating method. Forming method The profile of […]
Scientific
Definition and source of backlash in precision gear drive
The total empty return of the gear transmission chain caused by the factors such as the increase of the gear […]
Scientific
Brief introduction to the cutting principle of Gleason spiral bevel gear
Traditional spiral bevel gear machining is based on the principle of “imaginary flat top gear”. At present, the basic idea […]
Scientific
Transmission error of circular arc tooth line cylindrical gear
Gear is the core and basic component of mechanical transmission equipment. Under the dynamic excitation, it will produce dynamic response […]
Scientific
Spiral bevel gear is one of the most widely used gears
Spiral bevel gear is widely used in various mechanical products such as aircraft, ship and national defense equipment, machine tools, […]
Scientific
Discussion on failure mode of gear strength
Gear transmission is one of the most important mechanical transmission. More than 300 BC, Aristotle, the ancient Greek philosopher, expounded […]
Scientific
Effect of oil on fatigue strength life and wear of gears
In addition to the lubrication of gears and bearings, ATF is also used for the lubrication and cooling of hydraulic […]
Scientific
Noncircular gear drive mechanism
An important research direction of gear geometry is noncircular gear transmission. Its complex tooth surface geometry and special transmission performance […]
Scientific
Research status of temperature field in gear system
The thermal behavior of the high-speed and heavy-duty gear system has a great influence on its bearing capacity. In the […]
Scientific
Surface strengthening technology of anti high strength automobile gear surface contact fatigue
1. Spraying technology of superfine composite materials In recent years, Chinese and Japanese companies have studied and applied the spraying […]
Scientific
Design of eccentric displacement gear
The machining method of the eccentric modification gear generated by the modification method is the same as that of the […]
Scientific
Thermal behavior analysis of high speed and heavy load gear system
Gear transmission system is the core mechanism of mechanical equipment, which determines the performance of the whole machine. But for […]
Scientific
Surface strengthening of high strength automobile gear surface against contact fatigue by molybdenum disulfide coating
Molybdenum disulfide (MoS2), as a high quality solid lubricating material, has good antifriction, antiwear and bearing capacity. Molybdenum disulfide (MoS2) […]
Scientific
Transmission principle of eccentric gear and eccentric displacement gear
The transmission between the eccentric gears will produce the change of backlash. Therefore, when calculating the coefficient of deflection of […]
Scientific
Surface strengthening of high strength automobile gear surface against contact fatigue with manganese phosphate conversion coating
The application of manganese phosphate conversion coating technology in improving the surface strength of transmission parts first appeared in improving […]
Scientific
Measures to improve the structural performance of rocker gear shaft
According to the statistical analysis of the faults, it is found that the gears and bearings on the second shaft […]
Scientific
Structure of gear box of shearer rocker
As one of the main equipment of the coal mining face, the shearer is required to have high reliability in […]
Scientific
Heat treatment of high strength automobile gear
The strengthening technology of gear heat treatment should pay attention to the control of surface integrity, that is, to control […]
Scientific
Failure mode and mechanism of high strength automobile gear
The automobile gear is in the state of continuous load operation. There are rolling and sliding between the meshing surfaces […]
Scientific
Research on surface strengthening technology of high strength automobile gear
Gear is an important part to transmit power in mechanical devices. The Japanese mechanical society has carried out systematic investigation […]
Scientific
Optimization and improvement of thin-walled gear for mechanical transmission mechanism of airlock in nuclear power plant
According to the above analysis, in order to thoroughly solve the undercut fracture accident of thin-walled gear and ensure the […]
Scientific
Failure analysis of thin-walled gear used for mechanical transmission mechanism of airlock in nuclear power plant
According to the failure mechanism analysis of thin-walled gear, the gear material is 40Mn2. In the process of gear meshing, […]
Scientific
Research on rack and pinion of automobile steering gear
As the key part to change the driving direction and keep the vehicle running in a stable straight line, the […]
Scientific
Failure mechanism analysis of broken teeth of thin-walled gear used in mechanical transmission mechanism of airlock in nuclear power plant
It is found that the broken tooth thin-walled gear is a 2 ″ straight cylindrical gear with 12 teeth, which […]
Scientific
Gear machining and surface integrity control
In order to improve the production efficiency of gear machining and ensure the surface integrity of the gear, the gear […]
Scientific
Failure analysis of thin-walled gear for mechanical transmission mechanism of airlock in nuclear power plant
The gas gate of nuclear power plant runs through the inner and outer containment of reactor. Because of its complex […]
Scientific
Influence of four factors on fretting friction instability of gear shaft shoulder
The numerical calculation of the fretting friction instability state of the gear shoulder during the operation of the gear shaft […]
Scientific
Gear in place measurement
Gear in place measurement refers to the measurement when the instrument is installed on the gear or on the machine […]
Scientific
Big gear out of position measurement
In the field of gear measurement, the measurement of large and small gears has always been a technical problem, among […]
Scientific
Study on surface oxidation of Cr Mo Si steel used in automobile gearbox during gas carburizing
With the increasingly strict global regulations on carbon dioxide emissions and fuel consumption efficiency, automobile powertrain systems become more compact […]
Scientific
Analysis of micro torsional vibration mechanism of gear shoulder under complex working condition
In the gear transmission mechanism of complex power equipment, the gear shaft and the bearing are assembled by interference, so […]
Scientific
Heat treatment of motorcycle gear
Normalizing treatment Normalizing is a heat treatment process in which the steel is heated to 30 ~ 50 ℃ or […]
Scientific
Research on the way to solve the knock of automobile transmission gear
At present, the transmission knocking noise is mainly solved in the following ways (see Table 2): from the aspect of […]
Scientific
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 […]
Scientific
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 […]
Scientific
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 […]
Scientific
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, […]
Scientific
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 […]
Scientific
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 […]
Scientific
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. […]
Scientific
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. […]
Scientific
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 […]
Scientific
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 […]
Scientific
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 […]
Scientific
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 […]
Scientific
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 […]
Scientific
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 […]
Scientific
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 […]
Scientific
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 […]
Scientific
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 […]