Scientific

Spiral angle is an important parameter of helical gears. Currently, the traditional methods for measuring spiral angle mainly include cardboard

The basic parameters of helical gear pair and diagonal modification are shown in Table 1 and Table 2 respectively. In

The coordinate transformation of the right tooth surface of the workpiece generated from the imaginary profile rack is shown in

As shown in Figure (a), the time-varying meshing force curve of the helical gear product of a certain enterprise before

Because the red lead powder will condense into blocks when it meets the engine oil, which will interfere with the

Fig. 1 and Fig. 2 show the flash temperature and contact temperature curves of a helical gear pair before and

The Hertz contact stress and transmission error of the helical gear products of an enterprise before and after the experience

Taking two pairs of empirical modified front and rear helical gear pairs provided by the enterprise as the research object,

(1) The influence of complex optimization modification scheme of large gear with long tooth profile and tooth crest involute+tooth direction

There are three kinds of optimal modification schemes for tooth profile drum shape, which are the modification amount of driving

The optimized profile modification scheme of the broken line arc on the tooth top of the long tooth profile is

The optimal modification scheme of the involute of the long tooth profile is the modification amount of the driving wheel

The optimized modification scheme of the long tooth profile addendum arc is the modification amount of the driving wheel 5

The linear optimization modification scheme of long tooth profile addendum is the modification amount of driving gear 3 μ m.

Figure 1 shows the influence curve of the pinion tooth width on the time-varying meshing force of the helical gear

The selection of pressure angle is directly related to the transmission quality of helical gear pair. The greater the pressure

The first gear helical gear pair determines the maximum torque that an automotive automatic transmission can withstand, and it has

Ideally, the smaller the backlash, the smaller the meshing impact of the helical gear pair. However, too small backlash will

The rotation direction of helical gears is classified using SVM support vector machine, which is a commonly used classification algorithm

The misalignment of helical gear meshing is a key factor affecting the stability and lifespan of the helical gear pair

Figure 1 shows the influence curve of the helix angle on the time-varying meshing force of the helical gear pair

Transmission error refers to the deviation between the actual output angle and the ideal angle of a helical gear along

The sliding coefficient is an important parameter to measure the relative sliding degree between the tooth surfaces of the meshing

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

To evaluate the accuracy and reliability of the helical gear parameter detection method, five sets of standard helical cylindrical gears

(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

Due to the layout structure of dual input single output helical gears, as shown in Figure 1, the meshing process