helical gear

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 transmission error of the first stage reduction driving helical gear in the reducer of a pure electric vehicle is

Parameters Driving wheel Driven wheel Number of teeth 29 48 Modulus 1.75 1.75 Helix angle 16 16 Accuracy class 7

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 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

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

(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

Figure 1 shows the influence curve of friction on the second-order superharmonic resonance. With the increase of friction, the vibration

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

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,

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

(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

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