A kind of nj type cylindrical roller bearing automatic assembly machine

Abstract

The invention discloses a full-automatic assembling machine of an NJ type cylindrical roller bearing. The full-automatic assembling machine comprises an operating box (1). A third air cylinder (2) and a fourth air cylinder (3) are vertically arranged in the operating box (1). The top end of a guide rod of the fourth air cylinder (3) is connected with an inverted-L-shaped sliding block (4). A vertical section (5) of the inverted-L-shaped sliding block (4) is connected with a guide rail (6) arranged on the inner side wall of the operating box (1). A lower wedge block (8) is fixedly arranged on the upper surface of a horizontal section (7) of the inverted-L-shaped sliding block (4). A wedge groove (9) is formed in the upper surface of the lower wedge block (8). The portion, on the periphery of the wedge groove (9), of the lower wedge block (8) is composed of a plurality of stretching blocks (10). All the stretching blocks (10) are connected through elastic rings. According to the full-automatic assembling machine of the NJ type cylindrical roller bearing, assembling precision, reliability and stability of the bearing are ensured, and full automation of the assembling process is achieved.

Description

technical field [0001] The invention relates to an NJ type cylindrical roller bearing automatic assembly machine, which belongs to the technical field of bearings. Background technique [0002] Production process automation is an important symbol of industrial modernization and one of the main trends in the development of current science and technology, of which automatic assembly is one of its main components. Due to the wide use of bearings in industrial production, the automatic assembly technology of NJ cylindrical roller bearings is particularly important. At present, the assembly schemes of NJ type cylindrical roller bearings include the following types, 1. Manual assembly scheme, after heating the outer ring, according to the principle of thermal expansion and contraction, the outer ring will expand, and then put the roller into the inner wall of the outer ring, After the temperature drops, the rollers are clamped. Although the solution can complete the assembly task...

AI Technical Summary

Problems solved by technology

At present, the assembly schemes of NJ type cylindrical roller bearings include the following types, 1. Manual assembly scheme, after heating the outer ring, according to the principle of thermal expansion and cold contraction, the outer ring will expand, and then put the roller into the inner wall of the outer ring, After the temperature drops, the rollers are clamped. Although the solution can complete the assembly task, the operation is more complicated and heating the outer ring will destroy the shape and properties of the outer ring, reducing the life and safety of the bearing; 2. The semi-automatic assembly solution, through Precise calculation is used to control the distance between the rollers and directly install the rollers. Although the principle seems to be relatively simple, it is difficult to implement in practice, and the self-locking properties of the rollers assembled by this method are poor, which cannot meet the requirements of actual assembly. Requirements; 3. Fully automatic assembly scheme, the mechanism is particularly complicated, the operation is relatively difficult, and the cost of mechanism design is relatively high

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