Influence of helix angle on meshing performance of helical gear pair
(1) Influence of helix angle on transmission error of helical gears Figure 1 shows the relationship curve between the helix […]
(1) Influence of helix angle on transmission error of helical gears Figure 1 shows the relationship curve between the helix […]
1. Meshing interference inspection KISSsoft software can mark the contact point of the tooth surface of two gears in the […]
1. Helical gear material selection Helical gear materials can be roughly divided into four categories, such as Q235, Q275, 45 […]
With the increasingly serious energy and environmental problems, new energy vehicles have attracted much attention. With its advantages of zero […]
Through MATLAB simulation, the uniqueness of the helical gear side profile shape is verified, the helical gear rotation direction is […]
There is still a certain gap between the accuracy of this method and that of contact measurement. The main reasons […]
Helical gears are widely used in engineering. Compared with straight gears, helical gears have the advantages of smooth operation, high […]
In order to study the influence of temperature on the contact force of helical gear tooth surface, the tooth surface […]
The friction coefficient of tooth surface in helical gear meshing is f ≤ 0 2. Combined with the relevant research […]
Based on the elastic-plastic model, the tooth surface contact force of helical gear under different loads (400, 1000, 1500, 2000N […]
The heating flow density is applied to the meshing contact helical gear tooth surface, and the convective heat transfer coefficient […]
The elastic and elastoplastic models can be obtained by inputting two different strain curves. Among them, the elastic model only […]
By combining the basic involute equation with the involute in the gear machining coordinate system, the involute curve equation of […]
According to the change rule of the contact lines on the left and right sides of the pitch line in […]
Helical gear has the characteristics of good meshing performance, large coincidence degree and compact structure, resulting in less impact vibration […]
In order to study the influence of the mean value of time-varying meshing stiffness of helical gears on the vibration […]
Input the obtained time-varying meshing stiffness curve and meshing impact curve into the dynamic equations at the same time to […]
In order to study the influence of the time-varying meshing stiffness amplitude of gears on the vibration characteristics of the […]
In order to study the influence of the above two excitation factors on the system vibration, the vibration speed diagram […]
The high-speed helical gear drive of an electric vehicle is taken as the research object, and its structure diagram is […]
The dynamic model of the input stage tooth pair of an electric vehicle reducer is established, and the time-varying meshing […]
In the whole meshing area of helical gear pair, the meshing point of error free helical gear transmission is always […]
(1) The influence of compound optimization modification scheme of top involute and tooth direction drum of long tooth profile of […]
There are three schemes for drum shape optimization modification of tooth profile, namely, the modification amount of driving wheel is […]
Figure 1 shows the influence curve of the pinion tooth width on the time-varying meshing force of the helical gear […]
The optimal modification scheme of the top broken line arc of the long tooth profile is the modification amount of […]
For the dynamics of nonlinear helical gear system, the solid collision method, the finite element transient analysis method and the […]
The linear optimization modification scheme of long tooth profile addendum is the modification amount of driving gear 3 μ m. […]
As shown in the figure, the three-dimensional cloud diagram of contact stress of No. 0 unmodified, No. 1 optimization scheme […]
Figure 1 shows the influence curve of helix angle on the time-varying meshing force of the helical gear pair at […]
Transmission error belongs to error excitation, which is an important factor affecting the vibration and noise of meshing helical gear […]
As shown in the figure, the tooth surface load distribution of No. 0 unmodified, No. 1 optimization scheme and No. […]
Taking the helical gear pair of an electric vehicle gearbox as the research object, the KISSsoft software was used to […]
Under the ideal oil lubricated meshing condition, the big and small gear teeth will be completely separated by the oil […]
The three-dimensional model of helical gear is established, and the contact analysis of helical gear is carried out by finite […]
(1) Gear profile optimization modification+tooth direction drum modification Figures 1, 2, 3, 4 and 5 respectively show the composite modification […]
(1) Influence of pressure angle on transmission error of helical gears Figure 1 shows the relationship curve between pressure angle […]
(1) Optimal modification of linear addendum with long tooth profile Figures 1, 2 and 3 respectively show the simultaneous long […]
Transmission error is an important physical quantity used to describe the deviation degree between the actual angle and the theoretical […]
(1) Selection of long and short modification methods Long modification refers to the repair and removal of the part from […]
For helical gear pair transmission, the number of rotation cycles of the pinion is more than that of the big […]
(1) Time-varying meshing stiffness Because the gear teeth will produce elastic deformation when the gear is engaged, and the gear […]
At present, most electric vehicle OEMs use motor+gearbox+rear axle (as shown in the figure) instead of motor+rear axle, which not […]
Under the ideal condition that all components in the gearbox except the helical gear are regarded as absolute rigid bodies […]
As shown in Figure 1 (a), under ideal or no-load conditions, the helical gear pair can mesh smoothly and bear […]
In order to solve the problem of serious squealing and knocking noise of helical gears in the reduction gearbox, improve […]
The design and optimization of helical gears are often complicated, and even involve the solution of some transcendental equations. Therefore, […]
Knocking mainly occurs on the helical gear box components such as meshing no-load helical gear, synchronizer and sliding sleeve. Due […]
In the process of shape modification development and application research aimed at the bottleneck problem of helical gear vibration noise […]
Only on the basis of understanding and mastering the mechanism of transmission noise of electric vehicle reduction gearbox and helical […]
Helical gear squeal is a kind of pure noise with medium high rate and low sound pressure level, which is […]
The study of helical gear vibration and noise abroad has a history of more than 100 years. However, it was […]
In order to verify the reliability of this method, the author carried out experimental verification. The tested helical gears are […]
The pixel size of the image was measured using the standard 6 × 9 checkerboards, each with a size of […]
As shown in Fig. 1, due to the special tooth shape of helical gears, the brightness and contrast of the […]
Helical cylindrical gear is referred to as helical gear for short. The tooth line of helical gear is the combination […]
The significance of this step is to determine the sign of R and B. First, the connected domain with too […]
1. Composition of measurement system In order to meet the industrial production environment, the helical gear angle measurement system should […]
In order to reduce the transmission error below 1, the modification amount of helical gear is analyzed. First, analyze the […]
The power loss of the gearbox mainly includes oil stirring loss, wind resistance loss, gear meshing loss and bearing loss. […]