Influence of optimized profile modification on sliding coefficient of helical gear pair
The sliding coefficient is an important parameter to measure the relative sliding degree between the tooth surfaces of the meshing […]
The sliding coefficient is an important parameter to measure the relative sliding degree between the tooth surfaces of the meshing […]
The measurement of the modulus of helical gears requires first locating the center of the gear, commonly used methods include
As shown in the figure, the three-dimensional nephogram of contact stress of the 0 # unmodified, 1 # optimized plan
The edge of an image is generally the transition area between the target and the environment, which is an area
As shown in the figure, the tooth surface load distribution of No. 0 unmodified, No. 1 optimized and No. 9
The edge of an image is generally the transition area between the target and the environment, which is an area
Due to the unique tooth shape of helical gears, background noise is inevitably generated during the image scanning process, which
Under ideal oil-lubricated meshing conditions, the big and small gear teeth will be completely separated by the oil film. At
The helical gear pair in the reduction box of electric vehicle is in oil lubrication state. The thicker the oil
As shown in the figure, the transmission error curve of helical gear with no modification, no 1 optimization and no
During the process of collecting and processing helical gear images, external interference may cause a decrease in image quality. To
(1) Optimized profile modification of large and small gears+drum profile modification of tooth direction Figures 1, 2, 3, 4 and
The overall hardware of the helical gear detection system mainly consists of an industrial camera, a telecentric lens, a light
Transmission error is a key performance indicator for evaluating the transmission accuracy of planetary gear transmission systems, and it is
To evaluate the accuracy and reliability of the helical gear parameter detection method, five sets of standard helical cylindrical gears
Figures 1, 2 and 3 show the drum shape modification of the big and small gears at the same time,
Gears, as an important component, have always played a huge role in human production and life. Effective detection of various
The figure shows the maximum value Max (u) of dimensionless vibration displacement u and the minimum value Min (v) of
(1) Linear addendum optimization of long tooth profile Figures 1, 2 and 3 show the linear tooth top modification of
Figure 1 shows the dimensionless vibration displacement u and v of p, g tooth pairs, and q, g tooth pairs
(1) Selection of long and short shaping methods Long modification refers to the repair and removal of the part from
Generally speaking, the coincidence degree of a helical gear system is greater than 2, and the continuous gradual involution of
Due to the existence of helical angles, the meshing stiffness of helical gears not only varies with the variation of
(1) Influence of pinion tooth width on transmission error of helical gear Figure 1 shows the relation curve between the
The physical model and simplified torsional vibration model of a rigid supported dual input single output helical gear system without
The dual input single output helical gear transmission system is an important component of ship power propulsion equipment. Based on
Figure 1 shows the dimensionless vibration displacement u and v of p, g tooth pairs, and q, g tooth pairs
Due to the layout structure of dual input single output helical gears, as shown in Figure 1, the meshing process
(1) Influence of Gear Tooth Width on Transmission Error of Helical Gear Figure 1 shows the relationship curve between the
Due to the varying degrees of degradation of the meshing stiffness of helical gears at different meshing stages, it is
The dual input single output helical gear transmission system under asymmetric loads has become an important structure in the power
(1) Influence of Helical Angle on Transmission Error of Helical Gear Figure 1 shows the relationship curve between the helix
1. Crack propagation path Although there is uncertainty in the location and propagation path of cracks in helical gears, research
Although the vibration characteristics of high-speed helical gear transmission of an electric vehicle reducer have been studied, some conclusions with
Transmission error refers to the deviation between the actual output angle and the ideal angle of a helical gear along
The misalignment of helical gear meshing is a key factor affecting the stability and lifespan of the helical gear pair
Helical gears are the core components of automotive transmission systems. The transmission performance and meshing characteristics of helical gear systems
In the Xinjiang region, there is an extremely harsh environment, with extreme heat and cold conditions. The location of the
Based on the provided parameters of the spur gear pair and operating conditions, the maximum modification amount of these spur
Taking the high-speed helical gear transmission of an electric vehicle reducer as the research object, firstly, the time-varying meshing stiffness
Figure 1 shows the time-varying meshing stiffness of helical gear pairs with through cracks of different depths. By calculating the
Wind power generation, as a clean and pollution-free energy source, has been widely used globally in recent years. Its structural
1. Establishment of a Romax spur gear meshing model After defining the size and assembly parameters of parts in Romax,
The efficiency change curve of the sample gearbox under different working environment parameters is drawn by using Matlab software. The
Propose replacing the maximum modification amount of spur gear meshing stiffness with the meshing stiffness of spur gear elastohydrodynamic friction
Gear pair Maximum meshing force/N Average meshing force/N Maximum angular acceleration ((/°)/s2) Average angular acceleration ((/°)/s2) Standard gear 1 565
The total efficiency of the gearbox is not only related to its design parameters, but also to its different working
Contact force and angular acceleration are important parameters to test the effect of spur gear modification. Based on the parameters
1. Setting of working environment parameters of gearbox In order to obtain the influence of different design parameters of the
Replace C with CEHL γ And substitute it into the formula to obtain the maximum modification amount of the tooth
1. Simulation working condition parameters Select a certain mining spur gear pair for simulation calculation, and the parameters of the
Replace C with CEHL γ And substitute it into the equation to obtain the maximum modification amount of the tooth
The average efficiency formula of helical gear meshing transmission is derived by using the integral method, and the average efficiency
Let K (i EHL) be the stiffness of the elastohydrodynamic friction pair at a certain meshing point i during the
In the elastohydrodynamic state, the elastic approaching amount of the contact body is a comprehensive result of the change in
The wind resistance loss is the energy loss caused by the rotation of the pinion and the big gear in
According to the ISO6336 standard, the meshing stiffness C of spur gears γ Defined as the average value of the
Three elements of spur gear modification: maximum modification amount of tooth profile Δ Max, straight tooth profile modification length L,
The oil mixing loss of the gearbox mainly comes from the friction loss between the lubricating oil and the internal
Precision forging is a manufacturing process used to shape metal components with high accuracy and precision. It involves applying extreme