A press-fit device for assembling needle roller bearings

Abstract

The utility model relates to the field of bearing technology, and more particularly to a press-fitting device that can be used for assembling needle bearings, which solves the problem that in the prior art, the guide structure is generally elastically and movably connected to the inside of a sleeve at the top of a base, but no limiting structure is provided inside the sleeve, so during transportation, the guide structure will repeatedly move inside the sleeve, causing wear, thereby reducing the service life. A press-fitting device that can be used for assembling needle bearings, comprising a base and a positioning guide column connected to the center of the top of the base. The top end of the interference screw of the utility model contacts the bottom of the fourth positioning platform, so that the limiting function can be achieved, avoiding the movement of the first positioning platform, the second positioning platform, the third positioning platform and the fourth positioning platform due to bumps, thereby avoiding wear between structures and loss of elastic parts, thereby ensuring the overall service life and quality of use in the later stage.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, in particular to a press-fitting device that can be used for assembling needle roller bearings. Background Art

[0002] Bearings are an important component in contemporary mechanical equipment. Their main function is to support mechanical rotating bodies, reduce the friction coefficient during their movement, and ensure their rotation accuracy. The accuracy of bearing assembly determines the function and life of the bearing, especially the needle roller bearings, which have slender rollers and compact structures. Improper assembly can easily cause certain damage to the bearings. The utility model describes a double-precision positioning needle roller bearing press-fit positioning mechanism. The utility model mechanism can realize the precise double positioning of the bearing and the parts, and then directly press them in through a press, so that the press-fit process is uniformly stressed and damage-free. The operation process is simple and fast, which is conducive to the assembly of batch bearings.

[0003] The existing needle roller bearing press-fitting device is mainly composed of a base and a guide structure. The guide structure is generally elastically connected to the inside of a sleeve on the top of the base. However, there is no limiting structure inside the sleeve. Therefore, during transportation, the guide structure will move repeatedly inside the sleeve, causing wear, thereby reducing the service life. Utility Model Content

[0004] The purpose of the utility model is to provide a press-fitting device that can be used for assembling needle roller bearings, which solves the problem that in the prior art, the guide structure is generally elastically and movably connected to the inside of the sleeve at the top of the base, but no limiting structure is set inside the sleeve. Therefore, during transportation, the guide structure will move repeatedly inside the sleeve, causing wear, thereby reducing the service life.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A press-fitting device that can be used for assembling a needle bearing comprises a base and a positioning guide column connected to the center of the top of the base;

[0007] The positioning guide column includes a sleeve and a third positioning platform arranged inside the sleeve, the bottom of the third positioning platform is connected to the fourth positioning platform, and the top is connected to the first positioning platform through the second positioning platform, and the top of the sleeve is provided with an opening, and the diameter of the opening is larger than the diameter of the second positioning platform;

[0008] An elastic member is provided at the bottom of the fourth positioning platform, one end of the elastic member is elastically connected to the bottom of the fourth positioning platform, and the other end is connected to the bottom of the inner cavity of the sleeve. An interference screw is provided inside the sleeve, and a through hole matched with the interference screw is opened on one side of the top of the base. The bottom end of the interference screw passes through the bottom of the sleeve through a threaded sleeve and is connected to the inside of the through hole.

[0009] Preferably, the elastic member is a compression spring, a top end of which is elastically connected to the bottom of the fourth positioning platform, and the other end of which is elastically connected to the bottom of the inner cavity of the sleeve.

[0010] Preferably, the interference screw is arranged at the inner center of the extrusion spring, and a hidden groove communicating with the through hole is provided at the bottom of the base, and a rotating cap fixedly connected to the end of the interference screw is provided inside the hidden groove.

[0011] Preferably, a contact pad is fixedly connected to the top end of the abutment screw, and a cross groove is formed at the bottom of the rotating cap.

[0012] Preferably, the inner wall of the sleeve is provided with a plurality of guide grooves, and the outer ring of the third positioning platform is connected with a plurality of guide blocks adapted to be slidably connected with the guide grooves.

[0013] Preferably, a guide rod is provided inside the guide groove, the top end of the guide rod is connected to the top of the inner cavity of the guide groove, and the other end of the guide rod passes through the guide block through a sliding sleeve and is connected to the bottom of the inner cavity of the guide groove.

[0014] The utility model has at least the following beneficial effects:

[0015] By setting the interference screw, when the base and the sleeve are moved and transported, the interference screw is adjusted so that the top end of the interference screw contacts the bottom of the fourth positioning platform, thereby achieving a limiting effect and avoiding the first positioning platform, the second positioning platform, the third positioning platform and the fourth positioning platform from moving due to bumps, thereby avoiding wear between the structures and loss of the elastic parts, thereby ensuring the overall service life and quality of later use.

[0016] The utility model also has the following beneficial effects:

[0017] When the base and the sleeve are moved and transported, the interference screw is adjusted so that the top end of the interference screw contacts the bottom of the fourth positioning platform, thereby achieving the limiting function, avoiding the first positioning platform, the second positioning platform, the third positioning platform and the fourth positioning platform from moving due to bumps, thereby avoiding wear between the structures and the loss of the elastic parts, thereby ensuring the overall service life and the quality of later use. By setting the extrusion spring, the fourth positioning platform is given an elastic supporting force. By setting the hidden groove and the rotating cap, the convenience of rotating the interference screw is improved. By setting the contact pad and the cross groove, it is convenient to quickly cooperate with the rotating cap through the cross tool. The contact pad can support and protect the bottom of the fourth positioning platform. By setting the guide groove and the guide block, it is convenient to achieve stable movement of the third positioning platform inside the sleeve. By setting the guide rod, the movement of the third positioning platform is guided and limited, and the quality of movement is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the through hole structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the hidden slot structure of the utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the guide block of the utility model;

[0023] Figure 5 This is a schematic diagram of the sleeve structure of the utility model.

[0024] In the figure: 1. base; 2. positioning guide column; 3. through hole; 4. hidden groove; 5. extrusion spring; 6. third positioning platform; 7. second positioning platform; 8. first positioning platform; 9. guide block; 10. fourth positioning platform; 11. rotating cap; 12. abutment screw; 13. guide groove; 14. guide rod; 15. sleeve. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0026] Reference Figure 1-5 , a press-fitting device that can be used for assembling needle bearings, comprising a base 1 and a positioning guide column 2 connected to the top center of the base 1;

[0027] The positioning guide column 2 includes a sleeve 15 and a third positioning platform 6 disposed inside the sleeve 15. The bottom of the third positioning platform 6 is connected to the fourth positioning platform 10, and the top is connected to the first positioning platform 8 through the second positioning platform 7. The top of the sleeve 15 is provided with an opening, and the diameter of the opening is larger than the diameter of the second positioning platform 7.

[0028] The bottom of the fourth positioning platform 10 is provided with an elastic member, one end of the elastic member is elastically connected to the bottom of the fourth positioning platform 10, and the other end is connected to the bottom of the inner cavity of the sleeve 15. The interior of the sleeve 15 is provided with a conflict screw 12, and a through hole 3 compatible with the conflict screw 12 is opened on one side of the top of the base 1, and the bottom end of the conflict screw 12 passes through the bottom of the sleeve 15 through the threaded sleeve and is connected to the inside of the through hole 3. Specifically, through the setting of the conflict screw 12, when the base 1 and the sleeve 15 are moved and transported, the conflict screw 12 is adjusted so that the top end of the conflict screw 12 contacts the bottom of the fourth positioning platform 10, thereby achieving the limiting function, avoiding the first positioning platform 8, the second positioning platform 7, the third positioning platform 6 and the fourth positioning platform 10 from moving due to bumps, thereby avoiding wear between the structures and the loss of the elastic member, thereby ensuring the overall service life and later use quality.

[0029] Furthermore, the elastic member is an extrusion spring 5, the top end of the extrusion spring 5 is elastically connected to the bottom of the fourth positioning platform 10, and the other end is elastically connected to the bottom of the inner cavity of the sleeve 15. Specifically, by setting the extrusion spring 5, an elastic supporting force is provided to the fourth positioning platform 10.

[0030] Furthermore, the interference screw 12 is arranged at the inner center of the extrusion spring 5, and a hidden groove 4 connected to the through hole 3 is opened at the bottom of the base 1, and a rotating cap 11 fixedly connected to the end of the interference screw 12 is arranged inside the hidden groove 4. Specifically, through the setting of the hidden groove 4 and the rotating cap 11, the convenience of rotating the interference screw 12 is improved.

[0031] Furthermore, a contact pad is fixedly connected to the top end of the abutting screw 12, and a cross groove is provided at the bottom of the rotating cap 11. Specifically, the arrangement of the contact pad and the cross groove facilitates quick cooperation with the rotating cap 11 through a cross tool, and the contact pad can support and protect the bottom of the fourth positioning platform 10.

[0032] Furthermore, the inner wall of the sleeve 15 is provided with a plurality of guide grooves 13, and the outer ring of the third positioning platform 6 is connected with a plurality of guide blocks 9 which are slidably connected to the guide grooves 13. Specifically, by setting the guide grooves 13 and the guide blocks 9, it is convenient to realize the stable movement of the third positioning platform 6 inside the sleeve 15.

[0033] Furthermore, a guide rod 14 is provided inside the guide groove 13, the top end of the guide rod 14 is connected to the top of the inner cavity of the guide groove 13, and the other end is connected to the bottom of the inner cavity of the guide groove 13 through a sliding sleeve passing through the guide block 9. Specifically, through the setting of the guide rod 14, the movement of the third positioning platform 6 is guided and limited, thereby improving the quality of movement.

[0034] In summary, when the base 1 and the sleeve 15 are moved and transported, the interference screw 12 is adjusted so that the top end of the interference screw 12 contacts the bottom of the fourth positioning platform 10, so as to achieve the limiting function, avoid the first positioning platform 8, the second positioning platform 7, the third positioning platform 6 and the fourth positioning platform 10 from moving due to bumps, thereby avoiding wear between the structures and the loss of the elastic member, thereby ensuring the overall service life and the quality of later use. By setting the extrusion spring 5, the elastic support force is given to the fourth positioning platform 10. By setting the hidden groove 4 and the rotating cap 11, the convenience of rotating the interference screw 12 is improved. By setting the contact pad and the cross groove, it is convenient to quickly cooperate with the rotating cap 11 through a cross tool. The contact pad can support and protect the bottom of the fourth positioning platform 10. By setting the guide groove 13 and the guide block 9, it is convenient to realize the stable movement of the third positioning platform 6 inside the sleeve 15. By setting the guide rod 14, the movement of the third positioning platform 6 is guided and limited, and the quality of movement is improved.

[0035] The above shows and describes the basic principle, main features and 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 the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements 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 press-fitting device for assembling needle roller bearings, characterized in that: include: A base (1) and a positioning guide column (2) connected to the top center of the base (1); The positioning guide column (2) comprises a sleeve (15) and a third positioning platform (6) arranged inside the sleeve (15); the bottom of the third positioning platform (6) is connected to the fourth positioning platform (10), and the top is connected to the first positioning platform (8) via the second positioning platform (7); the top of the sleeve (15) is provided with an opening, and the diameter of the opening is larger than the diameter of the second positioning platform (7); An elastic member is provided at the bottom of the fourth positioning platform (10), one end of the elastic member is elastically connected to the bottom of the fourth positioning platform (10), and the other end is connected to the bottom of the inner cavity of the sleeve (15). An interference screw (12) is provided inside the sleeve (15). A through hole (3) adapted to the interference screw (12) is provided on one side of the top of the base (1). The bottom end of the interference screw (12) passes through the bottom of the sleeve (15) through a threaded sleeve and is connected to the inside of the through hole (3).

2. A press-fitting device for assembling needle roller bearings according to claim 1, characterized in that: The elastic member is a compression spring (5), the top end of which is elastically connected to the bottom of the fourth positioning platform (10), and the other end of which is elastically connected to the bottom of the inner cavity of the sleeve (15).

3. A press-fitting device for assembling needle roller bearings according to claim 2, characterized in that: The abutment screw (12) is arranged at the inner center of the extrusion spring (5); a hidden groove (4) communicating with the through hole (3) is provided at the bottom of the base (1); a rotating cap (11) fixedly connected to the end of the abutment screw (12) is provided inside the hidden groove (4).

4. A press-fitting device for assembling needle roller bearings according to claim 3, characterized in that: A contact pad is fixedly connected to the top end of the abutment screw rod (12), and a cross groove is formed at the bottom of the rotating cap (11).

5. A press-fitting device for assembling needle roller bearings according to claim 1, characterized in that: The inner wall of the sleeve (15) is provided with a plurality of guide grooves (13), and the outer ring of the third positioning platform (6) is connected with a plurality of guide blocks (9) adapted to be slidably connected with the guide grooves (13).

6. A press-fitting device for assembling needle roller bearings according to claim 5, characterized in that: A guide rod (14) is arranged inside the guide groove (13), the top end of the guide rod (14) is connected to the top of the inner cavity of the guide groove (13), and the other end is connected to the bottom of the inner cavity of the guide groove (13) through a sliding sleeve that passes through the guide block (9).

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