Transmission error analysis of helical gear of a pure electric vehicle reducer
The transmission error of the first stage reduction driving helical gear in the reducer of a pure electric vehicle is […]
The transmission error of the first stage reduction driving helical gear in the reducer of a pure electric vehicle is […]
Energy and environmental problems are becoming increasingly serious, and new energy vehicles have attracted much attention. Electric vehicles have become […]
Parameters Driving wheel Driven wheel Number of teeth 29 48 Modulus 1.75 1.75 Helix angle 16 16 Accuracy class 7 […]
The vibration acceleration in all directions of the helical gear is synthesized into the relative vibration acceleration a in the […]
Regardless of the deformation, the meshing point of a pair of helical gears at any time should be on the […]
Taking the high-speed input stage gear pair in the secondary reducer of a pure electric vehicle as the research object, […]
The overall error is treated as a discrete point on the contact line of the helical gear to indicate the […]
According to the actual meshing sequence of the helical gear, the overall error curve of the unit helical gear pair […]
The contact pressure history curve during helical gear meshing is shown in Figure 1. It can be seen that the […]
The meshing of helical gears can be regarded as line contact, and the load changes and distributes along the contact […]
1. Law of equivalent stress and time change during helical gear meshing The variation law between the dynamic contact equivalent […]
The overall error curve of helical gear is a complete error curve of helical gear, which is formed by measuring […]
Increase the speed of helical gear from 25rad / s to 35rad / s, and keep the torque unchanged. Using […]
Because the coincidence degree of helical gear is not an integer, its meshing transmission process is alternating between single and […]
Transmission error is an important excitation that causes the vibration and noise of helical gears. It is a parameter that […]
(1) This paper breaks through the condition limitation of calculating the time-varying contact line length of helical gear multi tooth […]
(1) Equivalent stress nephogram of helical gear at 0.0025s It can be seen from Fig. 1 that the contact stress […]
The load distribution along the contact line is affected by the position and length of the helical gear contact line. […]
(1) Through analysis, it can be seen that there is no mechanism to determine the size of helical gear drum […]
Many scholars at home and abroad have put forward a variety of theories and methods for helical gear modification. At […]
There are many methods to modify the helical gear drum shape. At present, there are mainly the following two methods; […]
The impact and vibration of helical gear will inevitably occur in the process of transmission meshing, which will increase the […]
Figure 1 shows the influence curve of friction on the second-order superharmonic resonance. With the increase of friction, the vibration […]
The dynamic characteristics of helical gear transmission considering tooth surface friction are studied and further studied and discussed: (1) Due […]
As shown in the figure, the dynamic contact equivalent stress of helical gear and the history curve changing with time […]
Nephogram of contact pressure during helical gear meshing: It can be seen from Figure 1 that the contact pressure is […]
Helix angle is an important structural parameter of helical gear, and it is also the main factor causing time-varying contact […]
The simulation process of helical gear dynamic contact has been introduced in detail before. The mesh division is also divided […]
Local stress concentration is very easy to damage the normal operation of helical gear. Adopting the method of helical gear […]
The dynamic characteristics of the main influencing factors of helical gear vibration and noise are studied. Considering the dynamic characteristics […]
Helical gear accuracy mainly controls the transmission accuracy between helical gears during operation, such as transmission stability, instantaneous speed fluctuation, […]
Pressure nephogram during helical gear meshing: It can be seen from figures 1 to 4 that when two helical gears […]
In fact, the helical gear is installed on the support shaft. When the gear teeth transmit power through the support […]
The provided helical gear parameters are substituted into the algorithm in this paper. The comparison of calculation results is shown […]
Figure 1 shows the influence curve of helical gear tooth surface friction coefficient on dominant frequency resonance. It can be […]
In recent years, the academic circles have made great progress in the research of helical gear modification methods. The modification […]
Helical gear error and time-varying meshing stiffness and other parameter excitation have been considered as the main sources of helical […]
At present, foreign researchers gradually realize that the influence of gear friction on the dynamic characteristics of transmission can not […]
(1) Equivalent stress nephogram of helical gear at 0.075s, as shown in Figure 1. (2) The equivalent stress cloud of […]
The basic parameters that determine the geometry of helical gears include the number of teeth Z and the normal pressure […]
The friction coefficient between two meshing tooth surfaces has an important influence on the magnitude of tooth surface friction, so […]
The influence curve of axial coincidence degree on contact line length calculated by this algorithm is shown in Figure 1. […]
For helical gears, the whole coincidence degree is greater than 2, which means that at least 2 tooth pairs are […]
The time variation of contact wire is one of the important characteristics of helical gear transmission. The change of the […]
The contact process of helical gear in the movement process is a highly nonlinear problem, and its contact strength is […]
Through the general post processor, we can view and analyze the solution results, observe various displacement, stress and other cloud […]
The variation law between the dynamic contact equivalent stress and time of helical gear is shown in the figure: It […]
There are many methods about helical gear modification. Only the transient dynamic contact and tooth direction modification of helical gear […]
In the past 30 years, a large number of scholars have used finite element, experimental analysis and theoretical calculation to […]
The parametric modeling of helical gear and the dynamic contact analysis of helical gear with ANSYS software are studied. The […]
The tooth direction modification of helical gear mainly refers to three elements: the direction of modification is the tooth direction, […]
During the operation of the machine, it is subjected to external load or self load. Some of these loads are […]
Both helical gear 1 and helical gear 2 are linear elastic materials. The young’s modulus of helical gear 1 is […]
The research on the gear failure of involute helical gear is carried out, focusing on the engineering problems of uneven […]
The three-dimensional modeling of involute helical gear is carried out by UG software. Due to the structural characteristics of helical […]
The tooth trend of the involute helical gear is the helix angle, and the normal tooth profile is in the […]
It mainly completes the three-dimensional structure design of the helical gear model. First, the modal analysis of the helical gear […]
The basic theory of drum trimming is that when the inclination angle of the helical gear is the maximum, the […]
Uneven load distribution of helical gear is a common engineering problem, which should be considered as a key issue in […]
According to the set boundary conditions, the helical gear is solved and analyzed, and the 20th order modal value of […]