Fabric type surface texture friction pre-filling type self-lubricating knuckle bearing

Abstract

The invention discloses a fabric type surface texture friction pre-filling type self-lubricating knuckle bearing. The fabric type surface texture friction pre-filling type self-lubricating knuckle bearing comprises an inner ring and an outer ring; a surface texture is machined on the outer sphere face of the bearing inner ring (3) and subjected to self-lubricating material friction pre-filling technology treatment to form a self-lubricating material friction pre-filling surface texture structure; and a layer of fabric self-lubricating material liner is pasted on the surface of the inner sphere face of the bearing outer ring (1). Abrasion to the fabric liner by the edge of the surface texture in the initial stage of friction is avoided to a certain degree, the surface texture is easily full of self-lubricating materials in a friction mode, and the process is simple. The self-lubricating materials pre-filling the textured surface optimize the friction interface material configuration, so that a friction surface transfer membrane is easy to generate, the texture edge cutting effect is weakened to a certain degree, the friction interface has lower static friction coefficient and lower dynamic friction coefficient, and accordingly the service life of the self-lubricating knuckle bearing is greatly prolonged.

Description

technical field [0001] The invention relates to the field of aviation manufacturing, in particular to a fabric-type surface texture friction pre-filled self-lubricating joint bearing. Background technique [0002] Self-lubricating joint bearings have been used in large military / civilian transport aircraft, new fighter aircraft, armed helicopters and other models due to their compact structure, large load capacity, wide operating temperature range, safety and reliability, impact resistance and good self-lubricating performance. parts are commonly used. However, there is still a big gap between domestic self-lubricating joint bearings and foreign advanced levels. For example, Swedish SKF bearings (using the company's X1 friction pair technology or XL friction pair technology) are about 1.5-2 times longer than domestic bearings. The American Society of Automotive Engineers standards SAE AS81820 and AS81819, which were updated in 2014, both increased the product life requiremen...

AI Technical Summary

Problems solved by technology

[0005] Because the edge of the surface texture has an accelerated wear effect on the fabric-type liner at the initial stage of friction, the application of surface texture technology in fabric-type self-lubricating spherical plain bearings is limited.

Images