Involute helical gear helical angle modification optimization design method

Abstract

The invention provides an involute helical gear helical angle modification optimization design method which comprises the following steps: setting the maximum angle modification amount of a helical angle as delta beta, and calculating the maximum modification amount of a tooth end of a helical gear pair according to the maximum angle modification amount of the helical angle; selecting the tooth direction tolerance preset-level precision as the maximum modification amount of the tooth end, and calculating the maximum angle modification amount of the spiral angle; establishing a kinetic model ofthe helical gear pair; and selecting a preset number of different helical angle modification angles from [0, delta beta], substituting the corresponding helical angle modification angles and the working condition parameters under different working conditions into the kinetic model, and carrying out simulation comparison to obtain an optimized helical angle modification angle of the helical gear pair. The maximum modification amount of the helical angle is calculated, a preset number of different helical angle modification angles are selected from [0, delta beta] to be substituted into the kinetic model, the optimized helical angle modification angle of the helical gear pair is obtained through simulation and comparison, modification of the helical angle of the helical gear pair is achieved, and the probability of unbalance loading of the helical gear is reduced.

Description

technical field [0001] The invention relates to the technical field of mechanical dynamics, in particular to an optimal design method for helix angle modification of involute helical gears. Background technique [0002] In the actual meshing process of helical gears, due to the gear transmission system, including transmission shafts, bearings, boxes and other components, bending deformation and torsional deformation will occur under the action of load. These deformations will distort the helical line of the gear teeth. In addition, the machining error of the gear tooth surface will lead to uneven load distribution along the tooth width direction of the gear teeth, and the phenomenon of unbalanced load will occur. This state will reduce the bearing capacity of the gear and seriously It will affect the reliable operation of the gear. [0003] Therefore, how to reduce the probability of unbalanced load of the helical gear is a technical problem to be solved urgently by those s...

AI Technical Summary

Problems solved by technology

These deformations will distort the helical line of the gear teeth. In addition, the machining error of the gear tooth surface will lead to uneven load distribution along the tooth width direction of the gear teeth, and the phenomenon of unbalanced load will occur. This state will reduce the bearing capacity of the gear and seriously will affect the reliable operation of the gear

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