Retainer mounting device of deep groove ball bearing

Abstract

The utility model relates to the technical field of bearing assembling equipment, and provides a retainer mounting device of a deep groove ball bearing, which comprises a datum plate, a mandrel assembly, a positioning assembly, an equalizer and a press fitting assembly, the mandrel assembly comprises a step shaft and a reference shaft which are arranged from top to bottom, the small-diameter end of the lower side of the step shaft is inserted into the reference shaft in the axial direction and rotationally matched with the reference shaft through a bearing, the side wall of the reference shaft is in threaded connection with a bolt, and the bolt can abut against and fix the step shaft. The press-fitting assembly comprises an air cylinder and a pressing ring, and the air cylinder drives the pressing ring to press downwards and press the hair retainer into the space between the inner ring and the outer ring of the deep groove ball bearing. The retainer overcomes the defects in the prior art, is reasonable in design and convenient to use, and solves the technical problems of low efficiency and excessive deformation when the retainer of the existing deep groove ball bearing is assembled.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing assembly equipment, in particular to a retainer installation device for a deep groove ball bearing. Background Art

[0002] During the assembly of deep groove ball bearings, specifically during the assembly of the cage, it is necessary to first use an equalizer to evenly distribute the steel balls, and then press the cage between the inner and outer rings. A cage is suitable for single-row and double-row deep groove ball bearings, and its structure is as follows Figure 6 As shown, the retainer P2 is formed with a limiting cavity P2-a for accommodating and limiting the steel ball, and the side walls adjacent to the two limiting cavities are provided with a deformation cavity P2-b. When the steel ball is embedded in the limiting cavity P2-a, the deformation cavity P2-b provides deformation space for the side wall. When the retainer is manually installed, since it is impossible to ensure that the side walls of each limiting cavity are in contact with the steel ball at the same time, the steel ball will be displaced, affecting the assembly efficiency. At the same time, the side walls of the limiting cavity are subjected to inconsistent forces and excessive deformation will occur, affecting the quality of the bearing.

[0003] To this end, we propose a cage installation device for a deep groove ball bearing. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies of the prior art, the utility model provides a deep groove ball bearing cage installation device, which overcomes the deficiencies of the prior art, has a reasonable design, is easy to use, and solves the technical problems of low efficiency and excessive deformation during assembly of the existing deep groove ball bearing cage.

[0006] (II) Technical solution

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A retainer installation device for a deep groove ball bearing, characterized in that it comprises a reference plate, a mandrel assembly, a positioning assembly, an equalizer and a press-fit assembly;

[0009] The core shaft assembly comprises a stepped shaft and a reference shaft arranged from top to bottom, the small diameter end of the lower side of the stepped shaft is inserted into the reference shaft along the axial direction and the two are rotatably matched through a bearing, and the side wall of the reference shaft is threadedly connected with a bolt, and the bolt can tighten the small diameter end of the stepped shaft to fix the stepped shaft;

[0010] The positioning assembly includes a positioning pin and a driving rod, wherein the positioning pin is elastically mounted on the large diameter end of the upper side of the step shaft and extends radially thereof, and the driving rod is elastically mounted on the large diameter end of the upper side of the step shaft and extends axially thereof, and the driving rod pushes the positioning pin radially outward by pressing down;

[0011] The divider includes a sleeve, and insertion rods that are evenly spaced at the lower edge of the sleeve and extend downward, and a vertical guide groove extending vertically is formed on the inner side of the insertion rod;

[0012] The press-fit assembly includes a cylinder and a press ring. The press ring is coaxially arranged with the step shaft and installed at the output end of the cylinder. The cylinder drives the press ring to press down and press the retainer between the inner and outer rings of the deep groove ball bearing.

[0013] Furthermore, at least two positioning pins are provided and are distributed in a ring shape around the large diameter end of the step shaft.

[0014] Furthermore, the large diameter end on the upper side of the step shaft is provided with a first axial guide hole extending in the axial direction, and a first radial guide hole extending in the radial direction, the first radial guide hole is connected to the first axial guide hole and passes through the side wall of the large diameter end, a positioning pin is elastically installed in the first radial guide hole, a driving rod is elastically installed in the first axial guide hole, a conical surface is formed at the lower end of the driving rod, and when the driving rod extends downward into the first axial guide hole, the conical surface cooperates with the positioning pin and pushes the positioning pin out radially outward.

[0015] Furthermore, the first radial guide hole is a stepped hole, a plug is installed in the stepped hole, an inner return spring is sleeved on the positioning pin and protrudes outward to form a first radial flange, and two ends of the inner return spring respectively abut against the step surface of the stepped hole and the plug.

[0016] Furthermore, an external return spring is sleeved on the driving rod and a second radial flange is formed on the top of the driving rod. Both ends of the external return spring abut against the second radial flange and the large diameter end of the step shaft respectively.

[0017] Furthermore, an electromagnet is provided on the reference plate, and the electromagnet can be magnetically attracted to the deep groove ball bearing to be assembled, so that the steel ball and the inner and outer rings of the deep groove ball bearing remain relatively fixed.

[0018] (III) Beneficial effects

[0019] The utility model provides a retainer installation device for a deep groove ball bearing, which has the following beneficial effects: an equal divider is sleeved on the large diameter end of the step shaft, and the equal divider is positioned and matched with the locating pin of the step shaft through the vertical guide groove on the back of the insertion rod. The equal divider is rotated to find the correct position, and then moved downward to evenly distribute the steel balls, and then the bolts are tightened to fix the step shaft. After the equal divider is removed, the retainer is sleeved on the large diameter end of the step shaft, so that the side walls of each limiting cavity of the retainer are kept horizontal, that is, at the same height. At the same time, the positioning pin is positioned and matched with the deformation cavity of the retainer to achieve rapid alignment of the retainer. Finally, the retainer is quickly and smoothly pressed between the inner and outer rings through the cylinder and the pressure ring, which can avoid displacement of the steel balls, reduce re-division caused by displacement of the steel balls, and ensure assembly efficiency. At the same time, the side walls of the limiting cavity are subjected to consistent force to avoid excessive deformation and ensure bearing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 This is a cross-sectional schematic diagram of the utility model after the reference plate is omitted and the press-fit assembly is completed;

[0022] Figure 3 It is a schematic diagram of the structure of the cooperation between the mandrel assembly and the positioning pin assembly of the utility model;

[0023] Figure 4 This is a schematic diagram of the utility model for equally dividing the steel balls of a deep groove ball bearing;

[0024] Figure 5 It is a schematic diagram of the state of press-fitting the retainer of the deep groove ball bearing according to the utility model;

[0025] Figure 6 It is a schematic diagram of the structure of the cage to be assembled for the deep groove ball bearing.

[0026] In the figure:

[0027] P, deep groove ball bearing;

[0028] P1, steel ball;

[0029] P2, cage;

[0030] P2-a, limit cavity;

[0031] P2-b, deformation cavity;

[0032] 11. Step shaft;

[0033] 11a, large diameter end;

[0034] 11a-1, first axial guide hole;

[0035] 11a-2, a first radial guide hole;

[0036] 11b, small diameter end;

[0037] 12. Reference axis;

[0038] 13. Bearings;

[0039] 14. Spacer;

[0040] 15. Head sealing;

[0041] 21. Positioning pin;

[0042] 22. Internal return spring;

[0043] 23. Plug;

[0044] 24. Driving rod;

[0045] 24a, cone surface;

[0046] 24b, second radial flange;

[0047] 25. External return spring;

[0048] 31. Equalizer;

[0049] 311, sleeve;

[0050] 311a, vertical guide groove;

[0051] 312, insert the rod;

[0052] 41. Press ring;

[0053] 51. Reference plate. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0055] See attached Figure 1-6 , a cage mounting device for a deep groove ball bearing, comprising a reference plate 51, a spindle assembly, a positioning assembly, an equalizer 31 and a press-fit assembly;

[0056] The upper end surface of the reference plate 51 is a plane, and is used to carry the deep groove ball bearing P to be assembled;

[0057] The core shaft assembly includes a stepped shaft 11 and a reference shaft 12 arranged from top to bottom. The stepped shaft 11 includes a large diameter end 11a and a small diameter end 11b coaxially arranged from top to bottom. The outer diameter of the large diameter end 11a is equal to or slightly smaller than the inner diameter of the retainer P2, and the outer diameter of the small diameter end 11b is equal to or slightly smaller than the inner diameter of the inner ring of the deep groove ball bearing P to be assembled. The small diameter end 11b of the stepped shaft 11 is axially inserted into the reference shaft 12 and the two are connected by a pair of The bearings 13 are rotatably matched, and a spacer 14 is arranged between a pair of bearings 13. The lower bearing 13 is tightened by a head 15 (with an axial flange). The reference shaft 12 is inserted into the reference plate 51. The side wall of the reference shaft 12 is threadedly connected with a bolt, and the bolt can tighten the small diameter end 11b of the step shaft 11 to fix the step shaft 11. The bolt is not shown in the figure. A long bolt needs to be used, which extends from the side of the reference plate 51 and penetrates the reference shaft 12 and then presses against the small diameter end 11b of the step shaft 11;

[0058] The positioning assembly includes a positioning pin 21 and a driving rod 24. The positioning pin 21 is elastically mounted on the large diameter end 11a of the upper side of the step shaft 11 and extends radially thereof. The driving rod 24 is elastically mounted on the large diameter end 11a of the upper side of the step shaft 11 and extends axially thereof. The driving rod 24 pushes the positioning pin 21 radially outward by pressing down.

[0059] The divider 31 includes a sleeve 311, and insertion rods 312 that are evenly spaced at the lower edge of the sleeve 311 and extend downward. The number of the insertion rods 312 is consistent with the number of gaps between the steel balls P1. The width of the insertion rods 312 is equal to the interval between adjacent steel balls P1 (after the steel balls P1 are evenly spaced). The lower end of the insertion rod 312 is formed with a chamfer, that is, the lower end of the insertion rod 312 is a structure that tapers from top to bottom, so that the insertion rod 312 can be quickly inserted into the gap between the steel balls P1. The inner side of the insertion rod 312 is formed with a vertical guide groove 311a extending vertically.

[0060] The press-fit assembly includes a cylinder and a pressure ring 41. The pressure ring 41 is coaxially arranged with the step shaft 11 and is screwed and installed on the output end of the cylinder. The cylinder (not shown in the figure) drives the pressure ring 41 to press down and press the retainer P2 between the inner and outer rings of the deep groove ball bearing P.

[0061] In this embodiment, three positioning pins 21 are provided and are distributed in a ring shape around the large diameter end 11 a of the stepped shaft 11 .

[0062] In this embodiment, the large diameter end 11a on the upper side of the stepped shaft 11 is provided with a first axial guide hole 11a-1 extending axially, and a first radial guide hole 11a-2 extending radially, the first radial guide hole 11a-2 is connected to the first axial guide hole 11a-1 and passes through the side wall of the large diameter end 11a, a positioning pin 21 is elastically installed in the first radial guide hole 11a-2, and a driving rod 24 is elastically installed in the first axial guide hole 11a-1, and a conical surface 24a is formed at the lower end of the driving rod 24, and when the driving rod 24 extends downward into the first axial guide hole, the conical surface 24a cooperates with the positioning pin 21 and pushes the positioning pin 21 radially outward. Specifically, the first radial guide hole is a stepped hole, and the stepped hole is formed with two stepped surfaces on the same radial side of the large diameter end 11a of the stepped shaft 11, which are the first stepped surface and the second stepped surface. The first stepped surface is adjacent to the side wall of the large diameter end 11a of the stepped shaft 11, and the second stepped surface is adjacent to the driving rod 24. A plug 23 is installed in the stepped hole, and the plug 23 abuts against the second stepped surface. The positioning pin 21 is sleeved with an inner return spring 22 and protrudes outward to form a first radial flange. The two ends of the inner return spring 22 The ends respectively abut against the first step surface and the plug 23; the driving rod 24 is sleeved with an external return spring 25 and its top protrudes outward to form a second radial flange 24b, and the two ends of the external return spring 25 respectively abut against the second radial flange 24b and the large diameter end 11a of the step shaft 11, wherein the lower end of the driving rod 24 is a driving part, and the conical surface 24a is specifically arranged on the driving part. The diameter of the driving part is larger than the rod body of the driving rod 24, and a limit nut can be threadedly connected at the upper end of the first axial guide hole to prevent the driving rod 24 from falling out.

[0063] In some embodiments, the driving rod 24 may also adopt a push-type structure of a ballpoint pen, so that the driving rod 24 can remain suspended after being pressed down, and can return to its original position upward after being pressed down again.

[0064] In some embodiments, an electromagnet is provided on the reference plate 51. After the divider 31 (non-magnetic material) divides the steel balls P1 into equal parts, the electromagnet is started and magnetically attracted to the deep groove ball bearing P to be assembled, so that the steel balls P1 of the deep groove ball bearing P remain relatively fixed with the inner and outer rings.

[0065] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0066] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cage mounting device for a deep groove ball bearing, characterized in that: It includes a reference plate, a mandrel assembly, a positioning assembly, an equalizer and a press-fit assembly; The core shaft assembly comprises a stepped shaft and a reference shaft arranged from top to bottom, the small diameter end of the lower side of the stepped shaft is inserted into the reference shaft along the axial direction and the two are rotatably matched through a bearing, and the side wall of the reference shaft is threadedly connected with a bolt, and the bolt can tighten the small diameter end of the stepped shaft to fix the stepped shaft; The positioning assembly includes a positioning pin and a driving rod, wherein the positioning pin is elastically mounted on the large diameter end of the upper side of the step shaft and extends radially thereof, and the driving rod is elastically mounted on the large diameter end of the upper side of the step shaft and extends axially thereof, and the driving rod pushes the positioning pin radially outward by pressing down; The divider includes a sleeve, and insertion rods that are evenly spaced at the lower edge of the sleeve and extend downward, and a vertical guide groove extending vertically is formed on the inner side of the insertion rod; The press-fit assembly includes a cylinder and a press ring. The press ring is coaxially arranged with the step shaft and installed at the output end of the cylinder. The cylinder drives the press ring to press down and press the retainer between the inner and outer rings of the deep groove ball bearing.

2. A deep groove ball bearing retainer mounting device as claimed in claim 1, characterized in that: The positioning pins are at least two and are distributed in a ring shape around the large diameter end of the step shaft.

3. A retainer mounting device for a deep groove ball bearing according to claim 1, characterized in that: The large diameter end on the upper side of the step shaft is provided with a first axial guide hole extending in the axial direction, and a first radial guide hole extending in the radial direction, the first radial guide hole is connected to the first axial guide hole and passes through the side wall of the large diameter end, a positioning pin is elastically installed in the first radial guide hole, a driving rod is elastically installed in the first axial guide hole, a conical surface is formed at the lower end of the driving rod, and when the driving rod extends downward into the first axial guide hole, the conical surface cooperates with the positioning pin and pushes the positioning pin out radially outward.

4. A deep groove ball bearing retainer mounting device as claimed in claim 3, characterized in that: The first radial guide hole is a stepped hole, a plug is installed in the stepped hole, an inner return spring is sleeved on the positioning pin and protrudes outward to form a first radial flange, and two ends of the inner return spring respectively abut against the step surface of the stepped hole and the plug.

5. A deep groove ball bearing retainer mounting device as claimed in claim 4, characterized in that: An external return spring is sleeved on the driving rod and the top of the external return spring protrudes outward to form a second radial flange. The two ends of the external return spring respectively abut against the second radial flange and the large diameter end of the step shaft.

6. A deep groove ball bearing retainer mounting device as claimed in claim 1, characterized in that: The reference plate is provided with an electromagnet, which can be magnetically attracted to the deep groove ball bearing to be assembled, so that the steel ball and the inner and outer rings of the deep groove ball bearing remain relatively fixed.

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