Involute gear transmission device based on line and plane conjugation

Abstract

The invention discloses an involute gear transmission device based on line and plane conjugation and particularly relates to an involute gear. The involute gear transmission device disclosed by the invention comprises an involute conjugated meshing pair, wherein a smooth curve shown in the specification is selected from the gear surface of one gear in the meshing pair; the master normal vector direction of the smooth curve is consistent to the normal direction of the gear surface; the curve shown in the specification and the gear surface of the other gear in the meshing pair form line and plane conjugated meshing; the gear surface of the gear is a tubular meshing surface; the tubular meshing surface is a ball race enveloping surface of which the ball center moves along an equidistant line; the equidistant line is a smooth curve with the equidistance a along the master normal vector direction of the curve shown in the specification; the radius of a ball in a ball race is the distance a between an equidistance curve and the curve shown in the specification; and the distance a is less than the minimum curvature radius of the original involute profile meshing section. In the invention, by changing the involute gear transmission into the line and plane conjugated meshing pair, the meshing process adopts point contact and approximately pure rolling meshing, the contact strength is high, the bearing capacity is high, the sliding ratio is greatly reduced, the direction of the end surface is still the direction of the involute meshing pair, and the advantages that the center distance in the involute gear transmission can be divided and the like are succeeded.

Description

technical field [0001] The invention relates to an involute gear transmission device, in particular to a line-surface conjugate involute gear transmission device. Background technique [0002] Gear is a typical mechanical basic part, which is widely used in various fields of national economy. In mechanical transmission, gears rely on special tooth profiles to ensure their transmission accuracy. Involute gear transmission has been widely used due to its many advantages such as the separability of the center distance and the convenience of manufacture and measurement. However, involute gears also have some disadvantages. For example, the farther the meshing point is from the node, the greater the relative sliding speed between the two meshing tooth surfaces, which has great impact on the wear of the tooth surface, transmission stability, transmission efficiency and gear life. There are adverse effects; secondly, the involute external gear transmission is the meshing transmis...

AI Technical Summary

Problems solved by technology

At present, the commonly used point contact gears are bevel gears and arc gears, but bevel gears are only used in specific occasions, and arc gears have some shortcomings such as load capacity and transmission accuracy and cannot be used in the field of precision transmission.

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