A method for optimizing that layout of oil injection lubrication nozzles of aeronautical orthogonal spur gear is disclose

Abstract

The invention discloses a method for optimizing that layout of oil injection lubrication nozzles of aeronautical orthogonal spur gear . The lubrication effect of gear can be judged by calculating theimpact depth, so as to optimize the layout of nozzle parameters, The calculation steps of the impact depth are as follows: The involute function of the spur gear and the space position relation of thetooth surface of the face gear, A spur gear in a period of time is obtained by geometrical operation, the change of the space position of the face gear and the position of the jet line of the lubricating oil (the relationship between the face gear pair and the jet line at the initial time is shown in the figure), At that same time, accord to the fact that the time taken for the gear meshing and rotate angle is equal to the jet injection time, The impact depth of the lubricating oil on the spur gear and the face gear is obtained, so as to judge the quality of the corresponding nozzle layout according to the principle that the greater the impact depth is, the better the lubricating effect is. Therefore, the invention can evaluate the oil injection lubricating performance of the face gear, and can be used as a nozzle layout optimization design method.

Description

technical field [0001] The invention relates to an optimization design method for the layout of an oil injection lubricating nozzle of an aviation orthogonal spur tooth surface gear. Background technique [0002] The working environment of aviation gears is high-speed and heavy-duty conditions, and oil injection lubrication is usually used. However, due to the small meshing gap during the meshing process of the gear teeth, the high-speed rotating gears will block the jet flow. These As a result, the gear teeth may run at high speed in the state of lack of oil or even no oil, which greatly affects the service life of the gear. Therefore, it is very important to explore better oil injection methods to obtain better lubrication effects. [0003] The main working environment of aviation orthogonal spur gears is high speed and heavy load. In this case, the main failure modes are: scratches, pitting, plastic deformation, tooth surface gluing, and gear expansion caused by high temp...

AI Technical Summary

Problems solved by technology

[0004] The orientation parameter of nozzle oil injection has a direct impact on whether the lubricating oil can directly enter the meshing part of the gear teeth. There are few studies on the oil injection lubrication of orthogonal spur gears, and the design of the oil injection lubrication nozzle can only be obtained through experience, and the lubrication cannot be evaluated. and cooling effect

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