Helical gear module, tooth top tooth root circle diameter, and tooth number detection
The measurement of the modulus of helical gears requires first locating the center of the gear, commonly used methods include […]
The measurement of the modulus of helical gears requires first locating the center of the gear, commonly used methods include […]
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
(1) Optimized profile modification of large and small gears+drum profile modification of tooth direction Figures 1, 2, 3, 4 and
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,
(1) Linear addendum optimization of long tooth profile Figures 1, 2 and 3 show the linear tooth top modification of
(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
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
(1) Influence of Helical Angle on Transmission Error of Helical Gear Figure 1 shows the relationship curve between the helix
The misalignment of helical gear meshing is a key factor affecting the stability and lifespan of the helical gear pair
Gear pair Maximum meshing force/N Average meshing force/N Maximum angular acceleration ((/°)/s2) Average angular acceleration ((/°)/s2) Standard gear 1 565
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
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
Miner’s linear cumulative damage rule believes that under the repeated action of a given stress level, the damage and stress
The S-N curve of the target helical gear is obtained from the S-N curve of the helical gear material, which
According to practical experience, contact fatigue often occurs in transmission gears. The table shows the basic parameters of the high-speed
Taking a pair of small gears and large gears meshed by cylindrical spur gears as an example, it is known
To verify the effectiveness of the method, the method that considers the true transition curve but does not modify the
The calculation of heat flow density and convection heat transfer coefficient will be used as the input heat source and
During the meshing transmission of helical gear pairs, sliding wear occurs due to the relative sliding of the tooth surfaces.
Gear Number of teeth z Modulus m/mm Modification coefficient x pressure angle α (/ °) Tooth top height coefficient hα*
The angular acceleration amplitude at the meshing frequency is taken as the evaluation index of the system, and the angular
For the calculation of heavy load large module gear and rack drive, there are many literature research calculation methods, some
Since the rigid body shell of the inner ring of the spur gear driving wheel is fully constrained, the theoretical
Number Factor/mm Level 1 Level 2 Level 3 A(a1) Groove width 0.2 0.3 0.4 B(a2) Lateral clearance 0.2 0.07 -0.03
Convert the cylindrical gear pair established by UG to X_ T intermediate format, and then import it into the dynamics
The gear rack with large module and heavy load is not suitable for the conventional hobbing and slotting processing method.
The total meshing force F of a spur gear pair in the direction of the meshing line can be expressed
The main excitation in a spur gear pair system comes from gear tooth meshing. When the meshing frequency of the
The maximum values of tooth root bending stress and tooth surface contact stress under different axial installation errors of spiral
In order to study the impact of different center distance deviations on the stiffness of a gear tooth during a
The time-varying meshing stiffness of spur gears is one of the main factors that cause impact and noise in spur
The influence of the installation error of the shaft intersection angle on the engagement mark of the spiral bevel gear
When the rated load of small module spiral bevel gear pair is 3 N · m, the instantaneous contact ellipse
Table 1 shows the basic geometric parameters of the double double sided method small module spiral bevel gear pair. According
The double faced normal spiral bevel gear pinion uses a double faced cutter head. The schematic diagram of the normal
Measure the gear module. Take the effective meshing section of the gear and establish a section parallel to the end
Taking the worn double circular arc gear shaft of the pumping unit reducer as the object, the gear design is
In actual machining, the normal tooth profile of double circular arc gear is circular arc. Therefore, the end face profile
There is less wear on the tooth root and tooth top during gear operation. On this basis, the reverse engineering
The stress analysis of hypoid gear with super reduction ratio is carried out through the finite element software Ansys Workbench.
According to the established finite element simulation model of hypoid gear with super reduction ratio, the Transient structural module is
As shown in the figure, the geometric relationship of hypoid gear pitch cone is shown. The pitch circle radius r1
Tooth width and helix angle are the main parameters that affect the time-varying contact line of helical gears. Figure 1
Tooth surface roughness and lubricating oil viscosity are the main factors that affect the friction coefficient of tooth surface. Through
With the same parameters, the average meshing efficiency obtained is compared with the results as shown in Figure 1. It
The instantaneous meshing efficiency of helical gears is defined as: Where, Tp and Tg are the torque of main and
In the process of helical gear meshing, the friction coefficient of tooth surface will change significantly with the change of