Assembly tool for angular contact ball bearing with slope on outer ring

Abstract

An assembling tool for an angular contact ball bearing with a slope on an outer ring is annular and is provided with two annular steps, namely a first step and a second step, and the bottom face of the first step is a plane and is in clearance fit with a bearing inner ring placed on the first step; a plurality of uniformly distributed steel ball positioning bosses are arranged on the bottom surface of the second step, the number of the steel ball positioning bosses is equal to that of the steel balls without the isolation rings, grooves for placing the steel balls with the isolation rings are formed among the steel ball positioning bosses, and the bottom surfaces of the grooves are planes and are in clearance fit with the isolation rings placed in the grooves; when the steel ball with the isolation ring is placed in the groove, the steel ball with the isolation ring falls into the roller path of the bearing inner ring; the top face of the tool is an inclined face inclining downwards in the axial direction, and a steel ball without an isolation ring rolls to the steel ball positioning boss from the inclined face and then falls into a roller path of a bearing inner ring. According to the tool, assembling of the inseparable angular contact ball bearing with the isolation ring playing a role of a retainer is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing assembly, in particular to an assembly tool for an angular contact ball bearing with a sloped outer ring. Background Art

[0002] When assembling an angular contact ball bearing with a sloped outer ring, the steel ball is usually placed in the cage pocket and in contact with the inner ring raceway. During this process, the steel ball is stabilized in the cage pocket and in contact with the inner ring raceway. Then the heated outer ring is pressed in to complete the bearing assembly.

[0003] The bearings described in this utility model are inseparable angular contact ball bearings that utilize spacer rings to function as a retainer. The spacer rings are short cylindrical rings and are spaced around the steel balls in the circumferential direction of the raceway to evenly isolate the balls. Because the center heights of steel balls with and without spacer rings differ when placed on the same plane, conventional ball assembly methods prevent both balls from simultaneously falling into the raceway, preventing complete bearing assembly. Therefore, a simple, easy-to-operate tooling is required. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides an assembly tool for an angular contact ball bearing with a sloped outer ring, which realizes the assembly of an inseparable angular contact ball bearing in which the isolation ring acts as a retainer.

[0005] In order to achieve the above technical purpose, the technical solution adopted is: an assembly tool for angular contact ball bearings with slopes on the outer ring, the tool is annular, and is provided with two annular steps from the inside to the outside and from low to high, namely the first step and the second step. The bottom surface of the first step is a plane, which is clearance-matched with the inner ring of the bearing placed on the first step; the bottom surface of the second step is provided with a number of evenly distributed steel ball positioning bosses, the number of which is equal to the number of steel balls without isolation rings, and a space for placing the steel ball positioning bosses is formed between the steel ball positioning bosses. A groove for a steel ball with an isolation ring is placed, and the bottom surface of the groove is a plane, which is clearance-matched with the isolation ring placed in the groove. When the steel ball with the isolation ring is placed in the groove, the steel ball with the isolation ring falls into the raceway of the bearing inner ring, and the center of the steel ball with the isolation ring is at the same height as the center of the raceway of the bearing inner ring; the top surface of the tooling is an inclined surface inclined downward in the axial direction, and the steel ball without the isolation ring rolls from the inclined surface to the steel ball positioning boss and then falls into the raceway of the bearing inner ring, and the center of the steel ball without the isolation ring is at the same height as the center of the raceway of the bearing inner ring.

[0006] The inclined surface and the steel ball positioning boss of the utility model have a smooth transition.

[0007] The beneficial effects of the utility model are as follows: the assembly tool provided by the utility model can solve the assembly problem of this type of bearing, is easy to operate, the tool is integrally formed, the production is economical and the structure is simple, and it is suitable for promotion to the assembly process of angular contact ball bearings with similar structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is an assembly process diagram of the utility model;

[0009] Figure 2 It is a structural diagram of the utility model;

[0010] Figure 3 This is a structural diagram of an angular contact ball bearing with a sloped outer ring after assembly;

[0011] In the figure: 1. Bearing inner ring; 2. Isolation ring; 3. Steel ball; 4. Assembly tool; 4-1. First step; 4-2. Second step; 4-2-1. Groove; 4-2-2. Steel ball positioning boss; 4-3. Inclined surface; 5. Bearing outer ring; d1. Inner diameter of assembly tool; d2. Inner diameter of first step; d3. Inner diameter of groove; h1. Height of groove; h2. Height of top surface of steel ball positioning boss from bottom surface of first step; α. Slope angle. DETAILED DESCRIPTION

[0012] The following provides preferred embodiments of the utility model in conjunction with the accompanying drawings to illustrate the technical solution of the utility model in detail. Here, the corresponding drawings will be provided to illustrate the utility model in detail. It should be noted that the preferred embodiments described herein are only for the purpose of illustrating and explaining the utility model and are not intended to limit or restrict the utility model.

[0013] like Figure 1 、 Figure 2As shown, an assembly tool for an angular contact ball bearing with a sloped outer ring is annular and has two annular steps from the inside to the outside and from low to high, namely the first step 4-1 and the second step 4-2. The inner diameter d1 of the assembly tool is smaller than the inner diameter d2 of the first step and larger than the inner diameter of the bearing inner ring. The bottom surface of the first step 4-1 is a plane, which is used to stably place the bearing inner ring 1. It has a clearance fit with the bearing inner ring 1 placed on the first step 4-1. The inner diameter d2 of the first step matches the outer diameter of the bearing inner ring 1, which can determine the position of bearings of the same size so that the axis of the placed bearing inner ring 1 coincides with the axis of the tooling; a number of evenly distributed steel ball positioning bosses 4-2-2 are provided on the bottom surface of the second step 4-2, and the number of the steel ball positioning bosses 4-2-2 is equal to the number of steel balls 3 without isolation rings. Grooves 4-2-1 for placing steel balls 3 with isolation rings 2 are formed between the steel ball positioning bosses 4-2-2, that is, the number of the grooves 4-2-1 is equal to the number of steel balls 3 with isolation rings. The bottom surface of groove 4-2-1 is flat, providing a clearance fit with the isolation ring 2 placed within groove 4-2-1. The groove's inner diameter d3 matches the outer diameter of isolation ring 2. When a steel ball 3 with an isolation ring is placed within groove 4-2-1, it falls into the raceway of the bearing inner ring 1, with its center centered at the same height as the raceway center of the bearing inner ring 1. Therefore, the groove height h1 is appropriately designed based on the bearing size. The top surface of the tooling is a slope 4-3 that slopes downward in the axial direction. A steel ball 3 without an isolation ring rolls from slope 4-3 onto the steel ball positioning boss 4-2-2 and then falls into the raceway of the bearing inner ring 1. The center of the steel ball 3 without an isolation ring is at the same height as the raceway center of the bearing inner ring 1. Therefore, the height h2 of the steel ball positioning boss from the top surface of the bearing inner ring 1 is appropriately designed based on the bearing size.

[0014] The inclined surface 4-3 and the steel ball positioning boss 4-2-2 may or may not be connected, as long as they do not affect the rolling path of the steel ball. The slope angle α of the inclined surface 4-3 is not limited, as long as it does not affect the rolling of the steel ball. When the inclined surface 4-3 and the steel ball positioning boss 4-2-2 have a smooth transition, the steel ball can roll more smoothly without any collision.

[0015] During the specific implementation of the present invention, the bearing inner ring 1 is first placed on the first step 4-1, and then the steel ball 3 with the isolation ring 2 is placed in the groove 4-2-1. Then the steel ball 3 without the isolation ring falls through the inclined surface 4-3 onto the steel ball positioning boss 4-2-2. Finally, the bearing outer ring 5 is placed with the slope facing downward, and the entire bearing is lifted by the bearing inner ring 1. The outer ring is placed on the platform and heated and pressed to complete the assembly of this type of angular contact ball bearing. The final structure of the angular contact ball bearing with a sloped outer ring is as follows: Figure 3 shown.

[0016] The above are merely preferred embodiments of the present invention and are not intended to limit or restrict the present invention. Researchers or technicians in this field will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection claimed by the present invention.

Claims

1. An assembly tool for an angular contact ball bearing with a sloped outer ring, characterized by: The tooling is annular and has two annular steps from the inside to the outside and from the low to the high, namely the first step (4-1) and the second step (4-2). The bottom surface of the first step (4-1) is a plane, which is clearance-matched with the bearing inner ring (1) placed on the first step (4-1); the bottom surface of the second step (4-2) is provided with a plurality of evenly distributed steel ball positioning bosses (4-2-2), the number of the steel ball positioning bosses (4-2-2) is equal to the number of the steel balls (3) without isolation rings, and grooves (4-2-1) for placing the steel balls (3) with isolation rings (2) are formed between the steel ball positioning bosses (4-2-2). The bottom surface of the tooling is a plane, which is clearance-matched with the isolation ring (2) placed in the groove (4-2-1). When the steel ball (3) with the isolation ring is placed in the groove (4-2-1), the steel ball (3) with the isolation ring falls into the raceway of the bearing inner ring (1), and its ball center is at the same height as the raceway center of the bearing inner ring (1); the top surface of the tooling is an inclined surface (4-3) inclined downward in the axial direction, and the steel ball (3) without the isolation ring rolls from the inclined surface (4-3) to the steel ball positioning boss (4-2-2) and then falls into the raceway of the bearing inner ring (1), and the ball center of the steel ball (3) without the isolation ring is at the same height as the raceway center of the bearing inner ring (1).

2. The assembly tool for an angular contact ball bearing with a sloped outer ring according to claim 1, characterized in that: The inclined surface (4-3) and the steel ball positioning boss (4-2-2) have a smooth transition.

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