A gear modification method for reducing gear micropitting

Abstract

The invention discloses a gear modification method for reducing gear micro-pitting. Through the first stage of modification, the smooth transition of the initial modification area can be realized, and the formation of micro-pitting in the alternate meshing area of ​​single and double teeth can be reduced; The two-stage modification can realize the smooth transition of tooth top meshing and reduce the formation of micropitting in the meshing and meshing areas. The present invention can realize the parametric control of the modification curve by changing different modification parameters, which not only retains the advantage of straight line modification to remove more material, but also can realize the transition area between the involute and the modification curve and the modification curve and the tooth top Smooth transitions in circular transition areas. Through the selection of appropriate modification parameters, the pressure distribution characteristics during the tooth contact process can be well improved, and the service life and reliability of the gear can be improved.

Description

technical field [0001] The invention belongs to the technical field of gear processing and manufacturing, and in particular relates to a gear modification method for reducing gear micropitting. Background technique [0002] Involute gear transmission has the advantages of strong load capacity, low processing cost, high transmission efficiency, high reliability, and small axial force transmission. It is widely used in mechanical equipment in the fields of fans, ships, vehicles, aviation and aerospace. However, due to the bending, contact, shearing and other deformations of the gear teeth during the working process, the gears will enter meshing early and exit meshing lagging behind, corresponding to corner contact, forming a pressure peak, resulting in micro-pitting and pitting of the gears , tooth surface wear and other failure problems, reducing the service capacity of the gear. However, through tooth top modification, by removing part of the material of the tooth profile a...

AI Technical Summary

Problems solved by technology

On the one hand, the currently used modification technology starts from the perspective of system vibration reduction and noise reduction, and lacks the consideration of stress distribution and gear micro-pitting during the gear meshing process; on the other hand, the current modification method lacks the involute The transition area between the modified curve and the modified curve is considered, and the transition between the modified curve and the addendum circle is lacking.

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