Simple assembly method for miniature ball bearings

Abstract

Disclosed is a simple assembly method for miniature ball bearings. Firstly, a ball holding ring (5) and a support (6) are manufactured, the support is placed in a positioning ring (5.2) of the ball holding ring, and a cage (3) soaked with lubricant is placed at the bottom of an inner ring of the support. Secondly, an inner ring (4) is mounted in the cage, the inner ring contacts with the bottom of the inner ring of the support, rolling balls (2) soaked with lubricant and having equal amount to that of arranged cage pockets are placed on an assembly support surface, and one of the rolling balls is toggled slightly by a small scoop so that the rolling ball enters one pocket of the cage until all the rolling balls enter the cage pockets. Thirdly, one slope end of an outer ring (1) is aligned with the cage and is pressed down to fully contact with an outer ring, with the height of H, of the positioning rings on the ball holding ring. Finally, the ball holding ring and the support are removed after a miniature ball bearing not assembled, the ball holding ring and the support are turned over, the outer ring continues to be pressed to be parallel to the inner ring, and accordingly simple assembly of the miniature ball bearing is achieved.

Description

technical field [0001] The invention belongs to the technical field of bearing assembly, in particular to a simple assembly method of miniature ball bearings. [0002] Background technique [0003] For miniature bearings, since the inner diameter of the inner ring is not greater than 10 mm, the diameter of the ball is generally below 1.588 mm, the smallest ball is about 0.3 mm, and the weight of the ball is 0.00011 to 0.0163 grams. If it is a ceramic ball, the weight is more Small, only about 40% of the weight of a rolling ball of the same size. Due to the small size and light weight of the balls or ceramic balls used in miniature ball bearings, it is extremely difficult to assemble them. The main difficulties are as follows: [0004] 1. The pocket of the cage is small, and the rolling ball is not easy to be sent into the pocket; [0005] 2. The rolling ball is small in size, and it is not easy to operate when picking it up with tweezers; [0006] 3. The rolling balls ar...

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Problems solved by technology

[0005] 2. The rolling ball is small in size, and it is not easy to operate when picking it up with tweezers;

[0006] 3. The rolling ball is light in weight, especially the miniature ceramic ball. The airflow exhaled by the assembler can blow away the ceramic ball. Therefore, it is very easy to lose the rolling ball during assembly

[0007] 4. In order to fix the ball in the pocket of the cage, Vaseline is mostly used to adhere the ball during assembly at present, and it is cleaned after assembly. Because Vaseline is difficult to clean after assembly of miniature bearings, Vaseline impurities will affect the bearing. Assembly and use precision

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