The friction coefficient has an important influence on the dynamic response characteristics of helical gear. Based on the coupled dynamic […]
The pitch tooth line is a curve. This determines that when the teeth mesh, each pair of teeth can only
20CrMnTi gear steel is used for precision forging driven spiral bevel gear, and lead is selected as the simulation material.
In hot precision forging of driven bevel gear, the choice of die shape and size is very important. It not
Basic dimensions: the shape of the blank is close to the shape of the driven spiral bevel gear after forming.
Compared with mechanical press, friction press has no fixed bottom dead center, convenient installation and debugging of die and less
The main purpose of designing the precision forging blank of spiral bevel gear is to ensure that the metal can
The forming process of spiral bevel gear can be divided into three stages. The initial stage of deformation is at
In the gear transmission system, due to the need of lubrication and the manufacturing accuracy and installation error of gear
The compression test is carried out by Gleeble-1500 thermal simulation testing machine to find out the influence law of heating
1. Drawing of tooth profile of non-circular gear At present, the envelope method and tooth profile folding algorithm are mostly
The stiffness excitation and friction excitation change after helical gear modification. The coupling dynamic model of helical gear modification and
The depth value greater than the microhardness 685 HV of carburized layer is recorded as the strengthening layer depth, and
Example analysis of noncircular gear: the equation of transmission ratio i12 to be realized is as follows: Where, the transmission
1.Noncircular gear ratio The non-circular gear transmission ratio is a periodic function with the driving wheel angle as the independent
There are three cases for the influence of tooth surface contact phase angle on parameter excitation intensity: the first case,
Based on the 8-DOF coupling dynamic model of helical gear system, the Runge Kutta method is used to solve the
In the helical gear transmission of hybrid electric vehicle, although the rolling motion conditions are considered in the tooth surface
In 1997, Professor Wang Xibin of Beijing University of technology conducted an experimental study on the grinding surface residual stress
The meshing error of gear teeth mainly comes from the error caused by gear processing and installation. Machining error mainly
The planetary gear transmission system of hybrid electric vehicle studied is composed of composite planetary gear mechanism and parallel axis
In the cylindrical gear transmission system of hybrid electric vehicle, due to the need of lubrication and the manufacturing accuracy
Fixed grinding speed vs = 20.3 M / s, grinding depth AP = 50 μ m. The test is carried
The direction shown in the figure is positive, φ R is the included angle between the connecting line between the
① Simulation conditions Based on the established 8-DOF coupling dynamic model of helical gear system, Runge Kutta method is used
Take the direction shown in the figure as the positive direction, φ S1 is the angle between the connecting line
Using the lumped parameter method, fully consider the nonlinear factors in the gear transmission system, such as time-varying meshing stiffness,
The dynamic excitation caused by the time-varying meshing comprehensive stiffness of helical gear system is one of the most important
Fixed grinding speed vs = 20.3 M / s and cylindrical gear steel speed VW = 1200 m / min.
The test mainly investigates the influence of the grinding process parameters of spiral bevel gear (grinding depth, grinding speed and
Surface roughness is not only the most important index to measure the surface morphology, but also an important standard to
The fixed grinding speed vs = 20.3 M / s and the spiral bevel gear speed VW = 1200 mm
The calculation program of friction force and friction torque is compiled by MATLAB software. The total comprehensive contact line length
With grinding speed vs = 20.3 M / s and grinding depth AP = 50 μ m. The speed of
The influence of different grinding parameters of gear steel materials on the surface residual stress has been discussed in detail.
In recent years, companies in Japan and Taiwan have studied and applied the spraying technology of composite materials containing MoS2
After the spiral bevel gear is processed under given grinding conditions, the tooth surface has no obvious defects such as
Fixed spiral bevel gear speed VW = 1200 mm / min, grinding depth AP = 50 μ m. The test
The grinding parameters of spiral bevel gear arranged by single factor test are shown in the table. Parameters Value Grinding
Before grinding the spiral bevel gear used for the test, ensure the same machining process and its machining process as
The microhardness of workpiece grinding surface corresponding to different grinding speed and grinding depth of spiral bevel gear steel is
This paper studies the strengthening effect of cylindrical gear steel grinding on the surface properties of 30crmnti material. The main
In the process of meshing transmission of spiral bevel gear, the surfaces of two teeth often need to contact and
According to the previous analysis, the friction perpendicular to the meshing line will cause the friction torque around the rotation
Fixed cylindrical gear steel grinding speed vs = 20.3 M / s, cylindrical gear steel grinding depth AP = 50
Fixed cylindrical gear steel speed VW = 1200 mm / min, grinding depth AP = 50 μ m. The test
In the process of mechanical thermal coupling analysis, it is necessary to change from thermal analysis of temperature field simulation
The variation law of grinding parameters on grinding force is studied, that is, the effects of grinding depth, grinding speed
Figure 1 shows the hardness change trend of the original sample without grinding of spiral bevel gear steel at different
Figure 1 shows the microstructure diagram of the section of the strengthening layer after grinding of 30crmnti. It can be
The friction force on the contact line of the helical gear. When the helical gear meshes through the node P,
In order to observe the grinding strengthening layer of spiral bevel gear steel and the microstructure of the grinding surface,
The two-piece spiral bevel gear blank has been successfully formed by using the finite element numerical simulation method. In order
Molybdenum disulfide (MoS2), as a high-quality solid lubricating material, has good antifriction, wear resistance and bearing capacity. Molybdenum disulfide (MoS2)
The application of manganese phosphate conversion coating process in improving the surface strength of transmission parts first appeared in the
The precision forging die of spiral bevel gear is processed and assembled in Qingdao Sanxing precision forging gear factory, and
During grinding, grinding force will affect the formation of grinding heat and the performance of workpiece surface, and then have
The contact line of helical gear is the intersection of the meshing tooth surface and the meshing plane of the
The spiral bevel gear blank formed by the two-piece ring rolling process, that is, the two spiral bevel gear blanks
The application of surface integrity index to comprehensively evaluate the surface machining quality of spiral bevel gear is of great
