Quick ball pressing tool for four-point angular contact bearing

Abstract

The utility model relates to a quick ball pressing tool for a four-point angular contact bearing, which comprises a base and is technically characterized in that a T-shaped through hole is formed in the center of the base, a guide sleeve is arranged in the T-shaped through hole, a reducing and avoiding groove concentric and communicated with the T-shaped through hole is formed in the middle of the upper surface of the base, and an annular limiting groove is formed in the upper surface of the base and located on the periphery of the reducing and avoiding groove. The cross section of the annular limiting groove is in a three-step shape which is sequentially reduced from inside to outside, and the annular limiting groove is composed of an outer ring ladder surface limiting part at the lowest position, a retainer ladder surface limiting part adjacent to the outer ring ladder surface limiting part and a rolling ball ladder surface limiting part adjacent to the retainer ladder surface limiting part; the ball pressing piece is composed of an upper cylindrical section and a lower cone section connected with the upper cylindrical section and used for extruding the rolling ball, a ball pressing handle is fixed to the upper surface of the upper cylindrical section, and a guide column matched with the guide sleeve is fixed to the center of the lower surface of the lower cone section. Compared with automatic batch production equipment, the tool is flexible to use and low in use cost.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing assembly tooling, and particularly relates to a quick ball pressing tooling for four-point angular contact bearings. Background Art

[0002] The four-point angular contact bearing (i.e., four-point contact ball bearing) is a separable bearing, and can also be said to be an angular contact ball bearing in which a set of bearings can bear bidirectional axial loads. It is composed of an inner ring, an outer ring, a cage and rolling balls. The raceways of its inner and outer rings are in a peach-shaped cross-section. When there is no load or only a pure radial load acts, the steel balls and the inner and outer rings show four-point contact.

[0003] Generally, the inner ring is a split inner ring, which allows a larger number of rolling balls to be installed in the bearing, thereby giving the bearing a higher load-bearing capacity. During assembly, usually, each rolling ball is pre-positioned with the cage first, and then the rolling ball is pressed into the cage by a tooling and contacts the raceway of the outer ring, and finally the inner ring is assembled. The ball pressing operation generally uses automated batch production equipment, but there are the following problems: high use cost, and it is not convenient to move and carry. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a quick ball pressing tooling for four-point angular contact bearings with reasonable structure and reliable use to solve the above problems. Compared with automated batch production equipment, it is flexible to use and has a low use cost.

[0005] The technical solution of the utility model is as follows:

[0006] A quick ball pressing tooling for four-point angular contact bearings includes a base. The technical key points are as follows: A T-shaped through hole is provided at the center of the base, a guiding sleeve is arranged in the T-shaped through hole, a reduced avoidance groove concentric and communicating with the T-shaped through hole is provided in the middle of the upper surface of the base, an annular limiting groove is arranged on the upper surface of the base around the reduced avoidance groove, the cross-section of the annular limiting groove is a three-step shape that decreases successively from the inside to the outside, and the annular limiting groove is composed of an outer ring step surface limiting part at the lowest position, a cage step surface limiting part adjacent to the outer ring step limiting part, and a rolling ball step surface limiting part adjacent to the cage step surface limiting part. The base is equipped with a ball pressing part, and the ball pressing part is composed of an upper cylindrical section and a lower conical section connected to the upper cylindrical section and used for extruding the rolling balls. A ball pressing handle is fixed on the upper surface of the upper cylindrical section, and a guiding column cooperating with the guiding sleeve is fixed at the center of the lower surface of the lower conical section.

[0007] For the above quick ball pressing tooling for four-point angular contact bearings, the reduced avoidance groove is a tapered groove with a wider upper part and a narrower lower part. The taper of the tapered groove is the same as the taper of the lower conical section of the ball pressing part, and the diameter of the lower end of the lower conical section is the same as the diameter of the bottom surface of the tapered groove.

[0008] The beneficial effects of the present utility model are as follows:

[0009] First, the outer ring of the bearing, the cage, and the balls are positioned by using the annular limiting groove, and then each ball is pressed into the cage and contacts the raceway of the outer ring of the bearing by using the lower cone section of the ball pressing member, so as to realize the pressing operation. Compared with the automated batch production equipment, it is flexible to use and has a low usage cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a schematic structural view of the present utility model;

[0011] Figure 2 is a schematic view showing the completion of ball pressing of the present utility model.

[0012] In the figure: 1. ball pressing handle; 2. ball pressing member; 201. upper cylindrical section; 202. lower cone section; 3. cage; 4. outer ring of the bearing; 5. ball; 6. base; 601. reduced avoidance groove; 602. T-shaped through hole; 603. outer ring stepped surface limiting portion; 604. cage stepped surface limiting portion; 605. ball stepped surface limiting portion; 7. guide post; 8. guide sleeve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0013] The present utility model will be described in detail according to the accompanying drawings of the specification.

[0014] As Figure 1 , Figure 2 shown, this four-point angular contact bearing rapid ball pressing tooling includes a base 6.

[0015] Among them, a T-shaped through hole 602 is provided at the center of the base 6, and a guide sleeve 8 is provided in the T-shaped through hole 602.

[0016] In the middle of the upper surface of the base 6, a reduced avoidance groove 601 that is concentric and communicates with the T-shaped through hole 602 is provided. An annular limiting groove is arranged on the upper surface of the base 6 outside the reduced avoidance groove 601. The cross-section of the annular limiting groove is a three-step shape that gradually decreases from the inside to the outside. The annular limiting groove is composed of an outer ring stepped surface limiting portion 603 at the lowest position, a cage stepped surface limiting portion 604 adjacent to the outer ring stepped limiting portion 603, and a ball stepped surface limiting portion 605 adjacent to the cage stepped surface limiting portion 604.

[0017] The base 6 is provided with a ball pressing member 2. The ball pressing member 2 is composed of an upper cylindrical section 201 and a lower cone section 202 that is connected to the upper cylindrical section 201 and is used for extruding the ball 5. A ball pressing handle 1 is fixed on the upper surface of the upper cylindrical section 201, and a guide post 7 that cooperates with the guide sleeve 8 is fixed at the center of the lower surface of the lower cone section 202.

[0018] In this embodiment, the reduced avoidance groove 601 is a tapered groove that is wider at the top and narrower at the bottom. The taper of the tapered groove is the same as that of the lower tapered section 202 of the ball pressing member 2, and the diameter of the lower end of the lower tapered section 202 is the same as the diameter of the bottom surface of the tapered groove.

[0019] Working principle:

[0020] Place the outer ring 4 of the bearing above the outer ring stepped surface limiting portion 603 of the base 6. Then, pre-position each ball 5 and the cage 3 and place them above the cage stepped surface limiting portion 604 and the ball stepped surface limiting portion 603. Finally, hold the ball pressing handle 1 by hand, so that the lower tapered section 202 of the ball pressing member 2 contacts each ball 5, and press down the ball pressing handle 1. Under the action of the ball pressing member 2, each ball 5 is pressed into the cage 3 and each ball 5 contacts the raceway of the outer ring 4 of the bearing.

[0021] The above has described the embodiments of the present invention in detail, but the above content is only the preferred embodiments of the present invention and cannot be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the creation of the present invention shall still fall within the scope covered by this patent.

Claims

1. A four-point angular contact bearing quick ball pressing tool, including a base, characterized in that: A T-shaped through hole is provided at the center of the base, a guide sleeve is provided in the T-shaped through hole, a lowering avoidance groove is provided in the middle of the upper surface of the base which is concentric with and communicated with the T-shaped through hole, an annular limit groove is provided on the upper surface of the base at the periphery of the lowering avoidance groove, the cross-section of the annular limit groove is a three-step shape which decreases from the inside to the outside, the annular limit groove is composed of the lowest outer ring step limit portion, the retaining frame step limit portion adjacent to the outer ring step limit portion, and the rolling ball step limit portion adjacent to the retaining frame step limit portion, the base is provided with a ball pressing member, the ball pressing member is composed of an upper cylindrical section and a lower cone section connected to the upper cylindrical section and used for squeezing the rolling ball, a ball pressing handle is fixed on the upper surface of the upper cylindrical section, and a guide column which cooperates with the guide sleeve is fixed at the center of the lower surface of the lower cone section.

2. The four-point angular contact bearing quick ball pressing tool according to claim 1, characterized in that: The reduction avoidance groove is a tapered groove that is wide at the top and narrow at the bottom. The taper of the tapered groove is the same as the taper of the lower cone section of the ball pressing piece, and the lower end diameter of the lower cone section is the same as the bottom diameter of the tapered groove.

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