(1) Influence of Gear Tooth Width on Transmission Error of Helical Gear
Figure 1 shows the relationship curve between the tooth width of the big gear and the transmission error of the helical gear pair. It can be seen that in the range of 20mm~50mm, with the increase of the tooth width of the big gear, the transmission error first decreases significantly, then increases slightly, and finally tends to remain unchanged when the tooth width reaches 35mm. When the gear tooth width is 25mm, the transmission error of the helical gear pair is the lowest, which is 0.284 μ m。
(2) Influence of Gear Tooth Width on Hertz Contact Stress of Helical Gear
Figure 2 shows the relationship curve between the tooth width of the gear wheel and the Hertz contact stress of the helical gear pair. Within the change range of the tooth width, the Hertz contact stress first decreases with the increase of the tooth width, but when the tooth width increases to 35mm, it is stable at the lowest point of 548.094N/mm2.
(3) The Influence of Big Gear Tooth Width on Helical Gear Transmission Efficiency
Figure 3 shows the relationship curve between the tooth width of the gear wheel and the transmission efficiency of the helical gear. It can be seen that the transmission efficiency first continues to increase with the increase of the tooth width, but when the tooth width exceeds 35mm, the transmission efficiency is stable at 99.78%.
It can be concluded that the transmission efficiency and Hertz contact stress of the helical gear pair can be improved by properly increasing the tooth width of the gear wheel.