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  • 12月 10, 2020
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The classification and characteristics of the external gear drive? External gear, when the number of teeth is small, the strength of bending increases with the increase of the variable coefficient, when the number of teeth is more, the effect of the variable position on the strength is not significant, and for high-precision gears, when the number of teeth is small, the increase of the strength of the bend will be reduced because the number of teeth is small.
Classification and characteristics of variable tooth drive:
Strength effect:
First, contact intensity.
The contact strength is increased only when the node is in the double-toothed meshing area. For straight-tooth gears, the carrying capacity is large, so the contact strength increases with X, and for the nodes of the two-tooth meshing area, the contact strength is better. However, the beneficial effect of increasing X on contact strength will be offset by the reduced contact strength, which is more obvious for oblique gears.
Second, bending strength.
The classification and characteristics of the gear drive outside the gear reducer are as follows: when the number of teeth is small, the strength of bend resistance increases with the increase of the variable position coefficient, when the number of teeth is more, the effect of the variable position on the strength is not obvious, and for the high-precision gear, when the change factor is large, the effect of the change on the strength is reduced due to the low re-engagement.
Apply:
First, suitable for a variety of transmission devices
Second, high difference changes: for compact structure, the requirements and standard gear center distance of the same transmission device, in order not to reduce the strength of the large gear (negative gear) and avoid cutting, more for X1 x2 larger occasions.
Third, for the hope of improving gear strength, balance the bending strength and sliding rate of large gears, but do not want to reduce the occasion more than once.
Angle transformation:
First, mostly used in compact structure, X1 plus X2 smaller occasions.
Second, used to increase and balance the size of the gear strength and slip rate, but allow for reduced transmission.
Third, for stitching the center distance.
Four, the oblique gear is usually only used in the matching center distance.
Fifth, the application range is small, generally only applicable to stitching the middle distance or requires a larger occasion.

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