Deep groove ball bearing nylon cage dismounting tool

Abstract

The utility model provides a kind of deep groove ball bearing nylon retainer dismounting tool, including base, the base is provided with adjusting lever and several movable blocks, several movable blocks are arranged along the circumference of base interval, and several movable blocks can be radially slippage setting synchronously, needle is provided on movable block, the needle can be inserted into bearing and nylon retainer and form abutment cooperation, adjusting lever is provided with pressure block for pressing on bearing, the pressure block can swing with adjusting lever and adjust the spacing between base. In view of the deficiency of prior art, the utility model provides a kind of deep groove ball bearing nylon retainer dismounting tool, which is convenient to dismount retainer, high stability and high efficiency.

Description

Technical Field

[0001] This utility model relates to the field of bearing testing, and in particular to a tooling for disassembling the nylon cage of a deep groove ball bearing. Background Technology

[0002] In the research, development, production, and quality control process of deep groove ball bearings, failure analysis after bench life testing and full inspection and sampling of finished products all require disassembling the bearings to observe the micro-pitting, spalling wear, and migration and distribution of lubricating media in the internal steel balls, inner and outer raceways. As the core separating component of the bearing, the nylon cage must be protected from damage during disassembly as much as possible, while also preventing secondary damage to the raceways, steel balls, and other precision working surfaces caused by the disassembly operation.

[0003] However, existing technologies for disassembling nylon cages mainly rely on manual disassembly using common tools such as flathead screwdrivers and pry bars. Manual prying involves applying force at a single point and asynchronously, which cannot guarantee uniform force distribution around the cage. This can easily lead to plastic deformation or even localized breakage of the nylon cage. In addition, the pry bar is prone to slipping during the application of force, directly hitting and scratching the precision working surfaces of the steel balls and raceways, causing secondary damage and directly affecting the accuracy of subsequent test results. Furthermore, the efficiency is also low. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a tooling for disassembling deep groove ball bearing nylon cages that is convenient to disassemble, highly stable, and efficient.

[0005] To achieve the above objectives, this utility model provides a disassembly fixture for a deep groove ball bearing nylon cage, comprising a base, an adjusting rod and several movable blocks on the base, the movable blocks being arranged at intervals along the circumference of the base and capable of synchronous radial sliding, a pin on each movable block being inserted into the bearing to form an abutment fit with the nylon cage, and a pressure block on the adjusting rod for pressing against the bearing, the pressure block being able to adjust the distance between itself and the base as the adjusting rod swings.

[0006] The advantages of the above technical solution are as follows: The movable blocks, arranged circumferentially and capable of synchronous radial sliding, drive the ejector pins to adjust to the appropriate bearing size and position them, allowing each ejector pin to simultaneously penetrate the bearing and evenly abut against the circumference of the nylon cage. Then, the adjusting rod drives the pressure block to swing and adjust the spacing, applying stable axial pressure to the bearing body. With the help of the ejector pins' abutting and supporting reaction force against the cage, the nylon cage is smoothly and axially ejected from the bearing. Throughout the process, the cage experiences uniform and symmetrical circumferential force, effectively avoiding deformation and breakage caused by single-point prying. It also prevents scratching of the steel balls and the precision working surfaces of the raceway during disassembly, replacing manual forceful prying and improving disassembly efficiency and stability.

[0007] The present invention can be further configured such that one end of the adjusting rod is connected to the edge of the base, and the pressure block is hinged to the middle of the adjusting rod.

[0008] By further configuring the adjustment rod, one end is hinged to the edge of the base and the pressure block is hinged to the middle of the adjustment rod, forming a lever-type axial pressure structure. With the hinge point at the end of the adjustment rod as the fulcrum, swinging the adjustment rod can drive the middle pressure block to apply a stable axial pressure to the bearing. By using the lever principle, the pressure force is amplified, making the operation labor-saving and convenient.

[0009] The present invention can be further configured such that: a connecting part is provided at the middle of the adjusting rod, the connecting part extends in the direction perpendicular to the adjusting rod, the pressure block is hinged at the connecting part, and the pressure block is arranged in a disc shape.

[0010] By further designing the mechanism, a connecting part extending perpendicularly to the rod body is provided in the middle of the adjusting rod, and a disc-shaped pressure block is hinged to the connecting part. The disc-shaped structure can increase the contact area with the bearing end face, reduce the pressure per unit area, and avoid damaging the bearing end face. The hinged structure allows the pressure block to adjust its angle independently to adapt to the bearing end face condition, ensuring that the clamping force is applied evenly and perpendicularly to the bearing, further improving the stability of the cage ejection process.

[0011] The present invention can be further configured as follows: the base is provided with a rotating disk and a plurality of guide grooves, the guide grooves are radially extended, the rotating disk is provided with a plurality of arc-shaped grooves, and the movable block is successively inserted into the guide grooves and the arc-shaped grooves, and the movable block can be displaced due to the change in the position of the points on the coaxial axis of the guide grooves and the arc-shaped grooves when the rotating disk rotates.

[0012] With further design, the radially extending guide groove on the base cooperates with the arc-shaped groove on the rotating disk. The movable blocks are simultaneously inserted into the two types of grooves. By simply rotating the rotating disk, the position change of the intersection point of the guide groove and the arc-shaped groove axis can drive all the movable blocks to slide synchronously in the radial direction. This, in turn, drives each ejector pin to adjust its radial position synchronously, accurately adapting to bearing cages of different inner diameter specifications. Synchronous adjustment ensures that the circumferential position of each ejector pin is symmetrical and consistent. When it abuts the cage, the force points are evenly distributed. During the ejection process, the cage will not be tilted or jammed, ensuring a smooth and unbiased sliding process.

[0013] The present invention can be further configured such that: the base includes a circumferentially extending relief groove, and the rotating disk is provided with a handle that extends through the relief groove and out of the base.

[0014] With further modifications, a circumferentially extending relief groove is provided on the base, and a handle that extends through the relief groove and out of the base is provided on the rotating disk. The operator can directly hold the handle outside the base to drive the rotating disk to rotate, thereby adjusting the radial position of the ejector pin without having to reach into the tooling to operate. Attached Figure Description

[0015] Figure 1 This is a perspective view of an embodiment of the present utility model; Figure 2 This is a top view of an embodiment of the present utility model; Figure 3 This is an embodiment of the present utility model. Figure 2 Sectional view at point AA; Figure 4 This is a schematic diagram of the cooperative structure of the rotating disk and the movable block in an embodiment of this utility model; The components include: base 1; guide groove 11; clearance groove 12; adjusting rod 2; connecting part 21; movable block 3; ejector pin 31; pressure block 4; rotating disk 5; arc groove 51; and handle 52. Detailed Implementation

[0016] An example of the implementation of the disassembly fixture for a deep groove ball bearing nylon cage according to this utility model. Figure 1-4 As shown: It includes a base 1, on which an adjusting rod 2 and several movable blocks 3 are provided. The movable blocks 3 are arranged at intervals along the circumference of the base 1 and can be synchronously slid radially. The movable blocks 3 are provided with ejector pins 31, which can be inserted into the bearing and form an abutment fit with the nylon cage. The adjusting rod 2 is provided with a pressure block 4 for pressing on the bearing. The pressure block 4 can adjust the distance between itself and the base 1 as the adjusting rod 2 swings.

[0017] One end of the adjusting rod 2 is connected to the edge of the base 1, and the pressure block 4 is hinged to the middle of the adjusting rod 2.

[0018] A connecting part 21 is provided at the middle of the adjusting rod 2. The connecting part 21 extends in the direction perpendicular to the adjusting rod 2. The pressure block 4 is hinged at the connecting part 21 and is arranged in a disc shape.

[0019] The base 1 is provided with a rotating disk 5 and several guide grooves 11. The guide grooves 11 extend radially. The rotating disk 5 is provided with several arc-shaped grooves 51. The movable block 3 passes through the guide grooves 11 and the arc-shaped grooves 51 one after the other. When the rotating disk 5 rotates, the position of the points on the coaxial axis of the guide grooves 11 and the arc-shaped grooves 51 changes, thereby driving the movable block to move radially synchronously.

[0020] The base 1 includes a circumferentially extending relief groove 12, and the rotating disk 5 is provided with a handle 52 that extends through the relief groove 12 and out of the base.

[0021] The above examples are merely one preferred embodiment of this utility model. Ordinary variations and substitutions made by those skilled in the art within the scope of this utility model's technical solution are all included within the protection scope of this utility model.

Claims

1. A disassembly fixture for a deep groove ball bearing nylon cage, characterized in that: The device includes a base, on which an adjusting rod and several movable blocks are provided. The movable blocks are arranged at intervals along the circumference of the base and can be synchronously slid radially. Each movable block is provided with a pin, which can penetrate into a bearing and form an abutment fit with a nylon cage. The adjusting rod is provided with a pressure block for pressing against the bearing. The pressure block can adjust the distance between itself and the base as the adjusting rod swings.

2. The disassembly fixture for the deep groove ball bearing nylon cage according to claim 1, characterized in that: One end of the adjusting rod is connected to the edge of the base, and the pressure block is hinged to the middle of the adjusting rod.

3. The disassembly fixture for the deep groove ball bearing nylon cage according to claim 2, characterized in that: The adjusting rod has a connecting part at its middle section, which extends in the direction perpendicular to the adjusting rod. The pressure block is hinged to the connecting part and is arranged in a disc shape.

4. The disassembly fixture for the deep groove ball bearing nylon cage according to claim 1, 2, or 3, characterized in that: The base is provided with a rotating disk and several guide grooves. The guide grooves extend radially. The rotating disk is provided with several arc-shaped grooves. The movable block passes through the guide grooves and arc-shaped grooves one after the other. The movable block can be displaced as the position of the points on the coaxial axis of the guide grooves and arc-shaped grooves changes when the rotating disk rotates.

5. The disassembly fixture for the deep groove ball bearing nylon cage according to claim 4, characterized in that: The base includes a circumferentially extending relief groove, and the rotating disk is provided with a handle that extends through the relief groove and out of the base.

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