Drive axle drive gear shaft relative to driven gear shaft

by:FUSAI     2020-05-20
??????????The driving gear shaft of the driving axle has an upward or downward offset with respect to the driven gear shaft, which is called an upward bias or a downward bias. This offset is called the offset distance of the hyperbolic gear. When the offset is large to a certain extent, one gear shaft can be passed above or below the other gear shaft. ???????In this way, compact supports can be arranged on both sides of each drive axle gear. This is of great benefit in enhancing the support stiffness and ensuring that the gears are properly meshed, thereby increasing the life of the gears. Unlike the case where the spiral bevel gear intersects the axis of the gear pair and the helix angle of the driving axle's main and driven gears is equal, the offset of the hyperbolic gear makes the helix angle of the driving gear greater than the helix angle of the driven gear Therefore, although the normal modulus or normal circumferential pitch of the hyperbolic gear pair is equal, the end surface modulus or end circumferential pitch is not equal. ???????The end face modulus or end face circumferential section of the driving gear of the driving axle is greater than that of the driven gear. This makes the driving gear driven by the hyperbolic gear have a larger diameter and better strength and rigidity than the driving gear driven by the corresponding spiral bevel gear. The degree of increase is related to the size of the offset. In addition, since the diameter and the helix angle of the driving gear driving the hyperbolic gear transmission of the axle are large, the equivalent radius of curvature of the meshing gear teeth is larger than that of the corresponding spiral bevel gear, and the result is the contact between the tooth surfaces The stress is reduced.
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