helical gear

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

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

(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

As shown in the figure, the tooth surface load distribution of No. 0 unmodified, No. 1 optimization scheme and No.

Under the ideal oil lubricated meshing condition, the big and small gear teeth will be completely separated by the oil

(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

(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

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

Knocking mainly occurs on the helical gear box components such as meshing no-load helical gear, synchronizer and sliding sleeve. Due

Helical gear squeal is a kind of pure noise with medium high rate and low sound pressure level, which is

In order to verify the reliability of this method, the author carried out experimental verification. The tested helical gears are

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 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,