Steel ball press fitting tool for angular contact ball bearing

Abstract

The utility model discloses a steel ball press-fitting tool for angular contact ball bearings, which comprises a support block, a sliding mandrel and a limit portion, the sliding mandrel for pressing a spring is clamped in a block body of the support block, the limit portion protrudes on the surface of the block body outside a top opening of the support block, and the steel ball press-fitting tool further comprises a ball guide mechanism. The steel ball press-fitting tool is characterized in that the steel ball press-fitting tool further comprises a ball guiding mechanism, the ball guiding mechanism comprises a top column, a hard base disc, an elastic disc, a protruding block, a fixed hole, a ball guiding groove, a surface groove and a rubber friction ring, and the surface of the sliding core shaft is provided with a plane used for supporting and connecting the hard base disc. According to the ball guide mechanism, a structure for guiding the steel balls to enter the retainer for press fitting can be improved on the basis of a press fitting tool in the prior art, so that it is ensured that the angular contact ball bearing can be pressed well, and efficient press fitting of the steel balls of the angular contact ball bearing is effectively ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing processing, in particular to a steel ball press-fitting tool for an angular contact ball bearing. Background Art

[0002] Angular contact ball bearings can bear radial loads and axial loads at the same time and can work at higher speeds. The larger the contact angle, the higher the axial load capacity. The contact angle is the angle between the line connecting the contact points of the ball and the raceway in the radial plane and the perpendicular line to the bearing axis. High-precision and high-speed bearings usually take a contact angle of 15 degrees. Under the action of axial force, the contact angle will increase.

[0003] Application No.: CN201821987222.7 discloses a steel ball pressing tool for a precision angular contact ball bearing, comprising a base, a spring, a support block and a sliding mandrel, the support block being fixedly connected to the upper surface of the base, the support block having an axial center through hole, the center through hole being a stepped hole that is smaller at the top and larger at the bottom, the sliding mandrel being fitted in the center through hole of the support block, an annular step surface being provided on the circumferential surface of the sliding mandrel, the portion of the sliding mandrel located above the step surface being fitted with the small diameter hole of the center through hole, the portion of the sliding mandrel located below the step surface being fitted with the large diameter hole of the center through hole, an axial blind hole being provided at the center of the lower end surface of the sliding mandrel, a spring being provided in the blind hole, the lower end of the spring extending out of the blind hole and resting against the upper surface of the base; a frustum-shaped ball loading portion being provided at the upper end portion of the sliding mandrel, a plurality of slide grooves being evenly distributed along the circumferential direction on the conical surface of the ball loading portion, and the slide grooves being opened along the generatrix direction of the ball loading portion.

[0004] When the steel ball pressing tool of the existing patented technology is used to press the steel ball of the angular contact ball bearing, the outer ring and the inner ring of the bearing can be placed on the corresponding support blocks and the sliding core shaft for support, and then the steel ball can be pressed in the outer ring and the inner ring of the bearing in cooperation with the retaining frame. A slide groove is provided at the sliding core shaft of the tool to guide the steel ball into the hole of the retaining frame. However, the elastic force of the steel ball is large when falling, and the slide groove alone cannot limit its smooth rolling into the retaining hole between the outer ring and the inner ring of the bearing, so that subsequent manual adjustment is required, which increases the time for pressing the steel ball. For this reason, we propose a steel ball pressing tool for angular contact ball bearings. Utility Model Content

[0005] The main purpose of the utility model is to provide a steel ball pressing tool for angular contact ball bearings. The support block and the sliding core shaft are improved and a ball guide mechanism is set at the steel ball pressing tool of the existing patented technology. The ball guide mechanism can be improved on the basis of the pressing tool of the existing patented technology to guide the steel ball into the retaining frame for pressing, thereby ensuring that the angular contact ball bearing can be pressed well, effectively ensuring the efficient pressing of the steel ball of the angular contact ball bearing, and can effectively solve the problems in the background technology.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] The cam is an angular contact ball bearing according to claim 1, wherein the sliding core shaft is provided with a compression spring and the sliding core shaft is provided with a limiting portion. The cam is an angular contact ball bearing according to claim 1, wherein the sliding core shaft is provided with a compression spring and the limiting portion is provided with a protruding limit portion on the surface of the block body outside the top opening of the support block. The cam is also provided with a ball guide mechanism, wherein the ball guide mechanism comprises a top column, a hard base disk, an elastic disk, a protrusion, a fixed hole, a ball guide groove, a surface groove and a rubber friction ring. The surface of the sliding core shaft is provided with a plane for supporting the hard base disk, and the upper disk surface of the hard base disk is bonded with the elastic disk, the elastic disk has a protrusion at the center of the disk body, and a fixed hole is provided between the protrusion, the elastic disk and the hard base disk, a top column is fixed on the surface of the sliding core shaft below the fixed hole, and the top column is inserted into the fixed hole, the surface of the elastic disk outside the protrusion is provided with ball guide grooves at eight points, the surface of the support block outside the sliding core shaft is concave with a surface groove, and a rubber friction ring is inserted in the groove body of the surface groove.

[0008] Furthermore, the surface of the rubber friction ring is provided with a rough particle ring surface;

[0009] After adopting the above technical solution, the rubber friction slide with the ring surface having rough particles can stably support the outer ring of the bearing with high friction.

[0010] Furthermore, a triangular rib plate is bonded to the outside of the column of the top column, and the thin plate body of the triangular rib plate is bonded to the outside of the upper column of the top column;

[0011] After adopting the above technical solution, the top column is elastically squeezed into the fixed hole by the triangular rib plate, thereby improving the clamping firmness between the top column and the fixed hole.

[0012] Furthermore, the bottom groove body of the ball guide groove is provided with an inclined sliding surface from the protrusion to the outside of the elastic disk;

[0013] After adopting the above technical solution, after the outer ring of the bearing is placed on the surface of the support block and the rubber friction ring, the retaining frame can be placed at the limiting portion, and then the ball guide groove guides the steel ball into the retaining frame with the inclined sliding surface.

[0014] Furthermore, the groove body size of the surface groove is the same as the ring body size of the rubber friction ring;

[0015] After adopting the above technical solution, the groove body of the surface groove can be adapted to fit the rubber friction ring.

[0016] Furthermore, the column size of the top column is the same as the hole size of the fixed hole;

[0017] After adopting the above technical solution, the top column can be inserted into the fixed hole with the triangular rib plate for firm engagement.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The utility model improves the support block and the sliding core shaft at the steel ball press-fitting tooling of the existing patented technology and arranges a ball guide mechanism. The ball guide mechanism can improve the structure of guiding the steel balls into the retaining frame for press-fitting on the basis of the press-fitting tooling of the existing patented technology, thereby ensuring that the angular contact ball bearing can be press-fitted well, effectively ensuring the efficient press-fitting of the steel balls of the angular contact ball bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The utility model is a schematic diagram of the overall structure of a steel ball press-fitting tool for an angular contact ball bearing.

[0021] Figure 2 The utility model discloses an exploded view of a ball guide mechanism of a steel ball press-fitting tool for an angular contact ball bearing.

[0022] In the figure: 1. support block; 2. sliding mandrel; 3. limit part; 4. ball guide mechanism; 5. top column; 6. hard base plate; 7. elastic plate; 8. protrusion; 9. fixed hole; 10. ball guide groove; 11. triangular rib plate; 12. surface groove; 13. rubber friction ring; 14. inclined sliding surface. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] like Figure 1-2 As shown, a steel ball press-fitting tool for an angular contact ball bearing comprises a support block 1, a sliding mandrel 2 and a limit portion 3, wherein the support block 1 is provided with a sliding mandrel 2 having a compression spring inserted into the block body, and a limit portion 3 is protruded from the block body surface outside the top opening of the support block 1, and further comprises a ball guide mechanism 4, wherein the ball guide mechanism 4 comprises a top column 5, a hard base plate 6, an elastic plate 7, a protrusion 8, a fixed hole 9, a ball guide groove 10, a surface groove 12 and a rubber friction ring 13, and the surface of the sliding mandrel 2 is provided with a flat surface for supporting the hard base plate 6. The hard base disk 6 has a surface, and an elastic disk 7 is bonded to the upper disk surface. The elastic disk 7 has a protrusion 8 at the center of the disk body, and a fixing hole 9 is provided between the protrusion 8, the elastic disk 7 and the hard base disk 6. A top column 5 is fixed to the surface of the sliding core shaft 2 below the fixing hole 9, and the top column 5 is inserted into the fixing hole 9. Ball guide grooves 10 are provided at eight points on the surface of the elastic disk 7 other than the protrusion 8. A surface groove 12 is provided on the surface of the support block 1 other than the sliding core shaft 2, and a rubber friction ring 13 is inserted into the groove body of the surface groove 12.

[0025] Wherein, the surface of the rubber friction ring 13 is provided with a rough particle ring surface;

[0026] After adopting the above technical solution, the rubber friction slide 13 can stably support the outer ring of the bearing with high friction through the annular surface with rough particles.

[0027] The top column 5 has a triangular rib plate 11 bonded to the outside of the column, and the thin plate of the triangular rib plate 11 is bonded to the outside of the upper column of the top column 5;

[0028] After adopting the above technical solution, the top column 5 is elastically squeezed into the fixed hole 9 by the triangular rib plate 11, thereby improving the clamping firmness of the top column 5 and the fixed hole 9.

[0029] The bottom groove body of the ball guide groove 10 is provided with an inclined sliding surface 14 from the protrusion 8 to the outside of the elastic disk 7;

[0030] After adopting the above technical solution, after the outer ring of the bearing is placed on the surface of the support block 1 and the rubber friction ring 13, the retaining frame can be placed on the limiting portion 3, and then the ball guide groove 10 guides the steel ball into the retaining frame with the inclined sliding surface 14.

[0031] The groove size of the surface groove 12 is the same as the ring size of the rubber friction ring 13;

[0032] After adopting the above technical solution, the groove body of the surface groove 12 can be adapted to fit the rubber friction ring 13 .

[0033] The column size of the top column 5 is the same as the hole size of the fixed hole 9;

[0034] After adopting the above technical solution, the top column 5 can be inserted into the fixing hole 9 with the triangular rib plate 11 for a secure engagement.

[0035] It should be noted that the utility model is a steel ball press-fitting tool for angular contact ball bearings. The support block 1 and the sliding mandrel 2 are improved and a ball guide mechanism 4 is set at the steel ball press-fitting tool of the existing patent technology. The surface groove 12 of the ball guide mechanism 4 can be clamped with a rubber friction ring 13 on the surface of the support block 1, and then the hard base plate 6, the elastic plate 7 and the convex block 8 can be adapted to be clamped at the top column 5 of the sliding mandrel 2 with the help of the fixed hole 9. The top column 5 is elastically squeezed into the fixed hole 9 with the triangular rib plate 11, so as to improve the clamping firmness of the top column 5 and the fixed hole 9, and the rubber friction slide 13 can stably support the outer ring of the bearing with high friction by using the annular surface with rough particles. After the outer ring of the bearing is placed on the surface of the support block 1 and the rubber friction ring 13, the retaining frame can be placed at the limit portion 3, and then the steel ball is placed in the ball guide groove 10, and the inclined sliding surface 14 is used to efficiently guide the steel ball into the retaining frame. Then the inner ring of the bearing and the matching retaining frame can be clamped on the elastic disk 7 and the steel ball respectively. At this time, the steel ball pressing tool can be placed on the external pressure device for normal pressing. After the pressing is completed, the angular contact ball bearing can be taken away from the pressing tool.

[0036] It should be noted that the utility model is a steel ball press-fitting tool for angular contact ball bearings. The components in the utility model are all components known to technical personnel in the field, and their structures and principles can be known to technical personnel through technical manuals or through conventional experimental methods.

[0037] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A steel ball press-fitting tool for an angular contact ball bearing, comprising a support block (1), a sliding mandrel (2) and a limit portion (3), wherein the support block (1) has a sliding mandrel (2) with a compression spring inserted into the block body, and the limit portion (3) is protruding from the block surface outside the top opening of the support block (1), characterized in that: The invention also comprises a ball guide mechanism (4), wherein the ball guide mechanism (4) comprises a top column (5), a hard base plate (6), an elastic plate (7), a convex block (8), a fixed hole (9), a ball guide groove (10), a surface groove (12) and a rubber friction ring (13); the surface of the sliding mandrel (2) is provided with a plane for supporting the hard base plate (6), and the upper plate surface of the hard base plate (6) is bonded with the elastic plate (7); the convex block (8) is located at the center of the plate body of the elastic plate (7), and the convex block (8), A fixed hole (9) is provided between the elastic disk (7) and the hard base disk (6); a top column (5) is fixed on the surface of the sliding core shaft (2) below the fixed hole (9), and the top column (5) is inserted into the fixed hole (9); ball guide grooves (10) are provided at eight points on the surface of the elastic disk (7) outside the protrusion (8); a surface groove (12) is provided in a concave shape on the surface of the support block (1) outside the sliding core shaft (2), and a rubber friction ring (13) is inserted into the groove body of the surface groove (12).

2. The steel ball press-fitting tool for an angular contact ball bearing according to claim 1, characterized in that: The surface of the ring body of the rubber friction ring (13) is provided with a rough particle ring surface.

3. The steel ball press-fitting tool for an angular contact ball bearing according to claim 1, characterized in that: A triangular rib plate (11) is bonded to the outside of the column of the top column (5), and a thin plate body of the triangular rib plate (11) is bonded to the outside of the upper column of the top column (5).

4. The steel ball press-fitting tool for an angular contact ball bearing according to claim 1, characterized in that: The bottom groove body of the ball guide groove (10) is provided with an inclined sliding surface (14) from the protrusion (8) to the outside of the elastic disk (7).

5. The steel ball press-fitting tool for an angular contact ball bearing according to claim 1, characterized in that: The groove body size of the surface groove (12) is the same as the ring body size of the rubber friction ring (13).

6. The steel ball press-fitting tool for an angular contact ball bearing according to claim 1, characterized in that: The column size of the top column (5) is the same as the hole size of the fixed hole (9).

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