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
As shown in the figure, the failure zone diagram of automobile gear transmission made by Nieman, Professor of Munich University
With the development of science and technology, as an important technology to introduce residual compressive stress, change the microstructure of
Friction between the metal die and the forging die is inevitable. Friction in metal plastic forming mainly has the following
The dynamic excitation of helical gear system includes internal excitation and external excitation. The internal excitation of helical gear pair
Because the spiral bevel gear blank formed by the two-piece rolling process is a symmetrical figure, the 1/2 model is
Forming speed is also an important factor affecting the precision forging of spiral bevel gear. Because the process of plastic
The automobile rack and pinion steering gear assembly is an important steering component of many automobiles. The automobile rack and
To measure the standard of qualified spiral bevel gear blank, in addition to achieving the shape and dimensional accuracy, the
The microstructure of spur gear tooth profile is deformed by compound forming, and the grain shape and size are also
In the research of surface strengthening technology for bending fatigue strength of automobile gears, Japan has studied and developed various
Drive roll and core roll are the main ring rolling dies for the forming of spiral gear blank, and their
Due to the condition control of biting in and rolling through of spiral gear blank, the ring wall is too
The formed spiral bevel gear blank is formed by ring rolling based on the ring blank. Through numerical simulation of
Before ring rolling, the formed spiral bevel gear blank has to go through four steps: pier roughening, pre punching, punching
Figure 1 shows the spur gear processed by the through continuous “cold extrusion + cold shaping” composite forming process. The
