A kind of full complement cylindrical roller bearing assembly equipment and method

Abstract

The invention discloses an assembly device and method for a full complement cylindrical roller bearing. The ring feeding device is composed of a bearing inner ring feeding device and a bearing outer ring feeding device. The assembly platform is composed of an assembly round table, a jacking mechanism, a bottom plate, and an indexing mechanism. Several stations are evenly arranged along the circumferential direction on the assembly round table. Each station is equipped with a special fixture, which includes a three-jaw hollow pneumatic chuck, clamp body, positioning pin, short shaft, deep groove ball bearing, positioning pin base, output shaft connection block, elastic rubber bushing and rubber The retaining ring, the deep groove ball bearing is added between the positioning pin and the short shaft in the special fixture, so that the inner ring of the bearing rotates together when the roller is pushed in, and multiple stations are set on the rotary platform, and the roller is pushed in tangentially to lift the inner ring. The assembly method of pressing the outer ring and pressing the outer ring together realizes the flexible assembly of the bearing.

Description

technical field [0001] The invention belongs to the field of automatic assembly of mechanical products, and in particular relates to a bearing assembly device and method for assembling a bearing full of cylindrical rollers. Background technique [0002] Bearings are widely used standard parts, among which full complement cylindrical roller bearings are widely used in the fields of motor vehicles and mining machinery due to their better load carrying capacity and excellent rigidity. At present, the existing cylindrical roller bearing assembly devices include: Chinese Patent Application No. 201910661737.0, named "A Fully Automatic Cylindrical Roller Bearing Assembly System", which uses a rotating table to drive the roller mounting table to rotate and sequentially rotate the cage, The inner ring, rollers and outer ring are adsorbed onto the roller mounting table. This assembly system avoids complex mechanical structures and can realize automatic assembly of various types of cyl...

AI Technical Summary

Problems solved by technology

At present, the existing cylindrical roller bearing assembly devices include: Chinese Patent Application No. 201910661737.0, named "A Fully Automatic Cylindrical Roller Bearing Assembly System", which uses a rotating table to drive the roller mounting table to rotate and sequentially rotate the cage, The inner ring, rollers and outer ring are adsorbed onto the roller mounting table. This assembly system avoids complex mechanical structures and can realize automatic assembly of various types of cylindrical roller bearings; however, this device can only install one type at a time. Different types of bearings cannot realize multi-variety mixed-flow assembly. At the same time, if the size difference between the two bearings is large, the fixture needs to be stopped and replaced uniformly, which will have a certain impact on assembly efficiency.

The Chinese patent application number is 201610298409.5, and the name is "A NJ-type cylindrical roller bearing automatic assembly machine". into the outer ring, and then squeeze the last Nth roller into the raceway of the outer ring of the bearing, which can ensure that each roller falls to the correct position, but the assembly machine, when pressing the last roller, will The mutual extrusion between the roller and the wedge block, the expansion block and the roller is likely to cause the roller to be scratched and affect the quality of the bearing. At the same time, when assembling bearings of different specifications, the flexibility of the device is poor

The Chinese patent application number is 201921215517.7, and the name is "a single rib cylindrical roller bearing assembly tool". By setting the rib with the seed opening, it plays the role of restraining the cylindrical roller when it is loaded, and at the same time Improve the installation efficiency, but the tooling adopts the assembly method of pushing the rollers from the radial direction, and the subsequent rollers rely on extrusion to fill the raceway. Friction damage and mutual extrusion between rollers affect the quality of the bearing. At the same time, the follow-up installation method provided by this tool is only suitable for single rib cylindrical roller bearings and is not universal

(4) The Chinese patent application number is 201811636631.7, and the name is "A Full-automatic Assembly Production Line for Cylindrical Roller Bearings". There are symmetrical raceways on both sides of the clamp body, and the rollers are pushed into the clamp body sequentially by the push cylinder from the two raceways. In the implementation, it saves time and improves assembly efficiency, but in this assembly line, the rollers enter the inner ring from both sides of the raceway at the same time, which will make the two roller flows squeeze each other after contacting the top raceway of the inner ring, so that the rolling The rollers cannot be normally distributed on the raceway at the bottom of the inner ring, and the method for judging the completion of the roller assembly is that the cylinder cannot push the rollers forward and the assembly is completed, which will easily cause damage to the rollers, affect the final performance of the bearing, and damage the cylinder. impact on lifespan

[0003] To sum up, the existing cylindrical roller bearing assembly has the following problems: 1) It does not have the ability to quickly change the tooling, the bearing specification has a small application range, and the flexibility is poor; 2) During the roller assembly process, it is easy to wear the roller, Scratches affect the quality of the bearing; 3) The rollers are easy to fall off when the bearings are fitted together, resulting in waste products; 4) When the rollers are pushed into the raceway, it is easy to cause missing or wrong installation, which affects the assembly pass rate

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