A bearing mechanical connection press-in clamp

Abstract

The utility model discloses a bearing mechanical connection's pressure riveting clamp relates to machining technical field, including bottom plate, the top fixed mounting of bottom plate has the base, the top installation of base has the support block, the inside sliding connection of support block has the unloading mandrel, the top fixed of support block has the riveting knife, the outside of unloading mandrel is equipped with the pressing plate, the utility model discloses beneficial effect is: through the first limit disc and the second limit disc of symmetrical design up and down, for providing stable support and limit for pressure riveting process, ensure the pressure riveting quality, in reset subassembly, through the sliding connection of sliding rod and the first limit disc, cooperate first disc spring and second disc spring, can make limit disc reset after pressure riveting is completed, improve work efficiency, at the same time, the elastic property of disc spring can buffer pressure riveting impact force, protect the part and clamp, prolong the life, reduce production cost, be applicable to large -scale bearing pressure riveting production.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and in particular to a press-fit clamp for mechanical connection of bearings. Background Technology

[0002] In the field of mechanical manufacturing and assembly, bearings, as key transmission and support components, play a decisive role in the overall performance of equipment due to the reliability and precision of their installation and connection. Traditional bearing mechanical connection methods, such as bolted connections and welded connections, are prone to loosening during long-term operation due to factors such as equipment vibration and temperature changes. This loosening of the bolts can affect the normal operation of the bearing and even cause equipment failure. Moreover, bolted connections require precise torque control, making the installation process relatively cumbersome and demanding high technical skills from operators. While welded connections can provide strong connection strength, the high temperatures generated during welding can cause thermal deformation and performance changes in the bearing material, reducing the bearing's precision and service life. In addition, welded connections are difficult to disassemble, which is not conducive to equipment maintenance and replacement.

[0003] As a new type of connection technology, press riveting has advantages such as high connection strength, good stability, and simple operation, and is gradually being used in bearing connections. However, existing press riveting fixtures do not control the riveting force precisely enough during the riveting process, which can easily damage the bearings and connecting parts. At the same time, they lack an effective reset mechanism. After the riveting is completed, the various parts of the fixture cannot quickly return to their initial positions, affecting the efficiency and quality of the next riveting operation. In addition, with the continuous development of the machinery industry, the specifications and models of bearings are becoming increasingly diversified. Existing press riveting fixtures have poor versatility and are difficult to meet the riveting requirements of bearings of different specifications. Utility Model Content

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A bearing mechanical connection press-fit fixture includes a base plate, a base fixedly mounted on the top of the base plate, a support block mounted on the top of the base, a discharge mandrel slidably connected inside the support block, a rivet knife fixed on the top of the support block, and a pressure plate sleeved on the outside of the discharge mandrel, with the outside of the pressure plate slidably connected to the inner wall of the support block. Below the pressure plate, a first limiting plate and a second limiting plate are respectively provided, and the second limiting plate and the first limiting plate are designed symmetrically. A reset component is provided on the outer side of both the first limiting plate and the second limiting plate. The reset assembly includes a slide rod fixed to the bottom of the second limiting plate, and the slide rod is slidably connected to the inner wall of the first limiting plate. A first disc spring is sleeved on the outer side of the slide rod, and a second disc spring abuts against both the first limiting plate and the second limiting plate.

[0006] As a preferred embodiment of the bearing mechanical connection press-fit clamp of the present invention, wherein: the base is provided with a mounting seat inside, and the bottom of the mounting seat is fixedly connected to the top of the base plate, and a base is fixed to the top of the mounting seat, and the base has a conical structure.

[0007] As a preferred embodiment of the bearing mechanical connection press-fit clamp of the present invention, wherein: a sleeve is sleeved on the outer side of the base, a third disc spring is sleeved on the outer side of the base, and the top of the third disc spring is in contact with the inner wall of the sleeve, and the top of the sleeve abuts against the bottom end of the second disc spring.

[0008] As a preferred embodiment of the bearing mechanical connection press-fit fixture of this utility model, wherein: a first screw is fixed to the bottom of the first limiting plate, an installation hole is opened on the top of the base, and the outer side of the first screw is threadedly connected to the inner wall of the installation hole; a second screw is fixed to the top of the second limiting plate, and the outer side of the second screw is threadedly connected to the inner wall of the pressure plate.

[0009] As a preferred embodiment of the bearing mechanical connection press-fit fixture of this utility model, the top of the base plate is fixed with a vertical plate, the inner wall of the vertical plate is provided with two sets of sliding grooves, the inner wall of the sliding groove is slidably connected with a U-shaped block, and the U-shaped opening of the U-shaped block is used to fix the workpiece.

[0010] As a preferred embodiment of the bearing mechanical connection press-fit fixture of this utility model, the inner wall of the slide groove is slidably connected with two sets of U-shaped blocks with symmetrical upper and lower designs, and one side of the U-shaped block is connected with a screw for fixing the workpiece.

[0011] As a preferred embodiment of the bearing mechanical connection press-fit fixture of this utility model, wherein: the opposite sidewall of the U-shaped opening of the U-shaped block is provided with a positioning block for fixing the workpiece.

[0012] As a preferred embodiment of the bearing mechanical connection press-fit fixture of this utility model, wherein: a limiting block is fixed on one side of the upright plate, the limiting block is arranged parallel to the slide groove, and the U-shaped block is slidably connected to the outer side of the limiting block.

[0013] As a preferred embodiment of the bearing mechanical connection press-fit clamp of the present invention, wherein: both the first disc spring and the second disc spring are provided with multiple portions along the axial direction.

[0014] As a preferred embodiment of the bearing mechanical connection press-fit fixture of this utility model, the inner wall of the base is threaded with two sets of fixing bolts, and the bottom end of the fixing bolts is threadedly connected to the inner wall of the base plate.

[0015] In summary, this utility model has the following beneficial effects: The first and second limiting plates, designed symmetrically, provide stable support and limit the riveting process, ensuring riveting quality. In the reset assembly, a slide rod is slidably connected to the first limiting plate. With the help of the first and second disc springs, the limiting plates can be quickly reset after riveting, improving work efficiency. At the same time, the elasticity of the disc springs can buffer the riveting impact force, protect parts and fixtures, extend service life, and reduce production costs. This assembly is suitable for large-scale bearing riveting production. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is an overall structural diagram of the press-fit fixture for mechanical connection of bearings.

[0017] Figure 2 This is a structural diagram of a press-fit fixture for a bearing mechanical connection.

[0018] Figure 3 This is a structural diagram of the base of a press-fit clamp for mechanical connection of bearings.

[0019] Figure 4 This is a structural diagram of the reset assembly of the press-fit clamp for bearing mechanical connection.

[0020] The following are the labels in the diagram: 1. Base plate; 2. Base; 3. Support block; 4. Unloading mandrel; 5. Rivet knife; 6. Pressure plate; 7. First limiting plate; 8. Second limiting plate; 9. Reset assembly; 91. Slide rod; 92. First disc spring; 93. Second disc spring; 10. Mounting seat; 11. Base; 12. Sleeve; 13. Third disc spring; 14. First screw; 15. Mounting hole; 16. Second screw; 17. Vertical plate; 18. Slide groove; 19. U-shaped block; 20. Limiting block; 21. Workpiece; 22. Positioning block; 23. Fixing bolt. Detailed Implementation

[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0023] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0024] Example 1: Reference Figures 1-4 This is the first embodiment of the present utility model. This embodiment provides a bearing mechanical connection press riveting fixture, including a base plate 1, a base 2 fixedly installed on the top of the base plate 1, a support block 3 installed on the top of the base 2, a discharge mandrel 4 slidably connected inside the support block 3, a rivet 5 fixedly installed on the top of the support block 3, and a pressure plate 6 sleeved on the outside of the discharge mandrel 4, and the outside of the pressure plate 6 slidably connected to the inner wall of the support block 3.

[0025] The base plate 1 serves as the fundamental support component of the entire riveting fixture, providing a stable mounting platform for other components and ensuring the stability and reliability of the entire fixture during operation. It withstands various forces generated during riveting. The base 2 supports and supports other components above it, providing mounting positions for the support block 3. It is a crucial transition structure connecting the base plate 1 and the upper working components. The support block 3 provides mounting and support space for the unloading mandrel 4, rivet 5, and pressure plate 6. It is the load-bearing structure for several key components during riveting operations, ensuring the accurate relative positions of these components during operation. The shaft 4 is positioned during the riveting process to remove the workpiece 21 from the rivet 5 after riveting is completed, ensuring the smooth separation of the workpiece 21 and maintaining the continuity of the production process. The rivet 5 is the core component that directly performs the riveting operation on the workpiece 21. By cooperating with the pressure plate 6, it applies pressure to the workpiece 21, such as the bearing, causing it to undergo plastic deformation and achieving mechanical connection. The pressure plate 6 is located below the relevant operating area of ​​the rivet 5. During the riveting process, it applies downward pressure, transmitting force to the rivet 5 and the workpiece 21 to facilitate the completion of the riveting action. At the same time, it cooperates with the first limit plate 7 and the second limit plate 8 to control the stroke and force of the riveting.

[0026] Below the pressure plate 6, there are a first limiting plate 7 and a second limiting plate 8 respectively. The second limiting plate 8 and the first limiting plate 7 are designed symmetrically. The outer side of the first limiting plate 7 and the second limiting plate 8 are provided with a reset component 9.

[0027] The first limiting plate 7 and the second limiting plate 8 are designed symmetrically and are located below the pressure plate 6. Their main function is to limit the movement stroke of the pressure plate 6, prevent the pressure plate 6 from pressing down excessively during the riveting process, and prevent damage to the workpiece 21. This ensures the stability and consistency of the riveting quality. At the same time, they serve as the mounting base for the reset assembly 9 and work together with the reset assembly 9 to achieve automatic reset of the pressure plate 6. The reset assembly 9 can reset the pressure plate 6 through its internal structure.

[0028] The reset assembly 9 includes a slide rod 91 fixed to the bottom of the second limiting disk 8, and the slide rod 91 is slidably connected to the inner wall of the first limiting disk 7. A first disc spring 92 is sleeved on the outer side of the slide rod 91, and a second disc spring 93 is abutted between the first limiting disk 7 and the second limiting disk 8. Multiple first disc springs 92 and second disc springs 93 are provided along the axial direction.

[0029] The sliding rod 91 guides the second limiting plate 8, ensuring that it can only move linearly along the sliding rod 91 relative to the first limiting plate 7, thus ensuring the accuracy of the limiting plate's movement. During the riveting process, when the pressure plate 6 moves downwards, causing the first limiting plate 7 and the second limiting plate 8 to approach each other, the first disc spring 92 is compressed, storing elastic potential energy. After riveting is completed, the first disc spring 92 releases its elastic potential energy, pushing the first limiting plate 7 and the second limiting plate 8 away from each other, causing the pressure plate 6 to reset. The second disc spring 93 further enhances the elastic reset capability of the reset assembly 9, and works in conjunction with the first disc spring 92 to ensure that the pressure plate 6 can quickly and accurately return to its initial position, preparing for the next riveting operation. It should be noted that the first disc spring 92 and the second disc spring 93 are made of 17-7PH stainless steel, with a rated load of 80kN, a deformation of 8mm, and a fatigue life ≥5×10. 5 Secondly, the elasticity of the first disc spring 92 and the second disc spring 93 should be checked regularly. If the elasticity is found to be weakened or damaged, they should be replaced in time.

[0030] Example 2: This is the second embodiment of the present invention, which is based on the previous embodiment.

[0031] Specifically, the base 2 has an internal mounting seat 10, and the bottom of the mounting seat 10 is fixedly connected to the top of the base plate 1. The top of the mounting seat 10 is fixed with a base 11, and the base 11 has a conical structure.

[0032] The mounting base 10 is provided to provide a stable mounting foundation for the base 11, firmly connecting the base 11 to the base plate 1, thereby enhancing the stability of the entire fixture structure. The base 11 adopts a conical structure design, which can disperse the stress generated during the riveting process to a certain extent and improve the load-bearing capacity of the base 11. At the same time, the base 11 serves as the mounting foundation for the first screw 14, and by connecting with the first screw 14, it provides support and fixation for the first limiting plate 7.

[0033] Specifically, a sleeve 12 is fitted on the outer side of the base 11, and a third disc spring 13 is fitted on the outer side of the base 11. The top of the third disc spring 13 is in contact with the inner wall of the sleeve 12, and the top of the sleeve 12 abuts against the bottom end of the second disc spring 93.

[0034] The sleeve 12 is used to position and guide the third disc spring 13, ensuring that it can stably exert its elastic effect during operation. It also protects the base 11 and the third disc spring 13 from external interference and damage. During riveting, the third disc spring 13 provides a certain elastic buffer force, reducing the impact of riveting on the base 11 and the base plate 1, protecting the fixture structure from damage, and also helping to improve the stability of the riveting quality. It should be noted that the third disc spring 13 is made of 50CrV4 high-carbon steel, with a rated load of 30kN, a deformation of 2mm, and a fatigue life ≥10. 6 Second-rate.

[0035] Specifically, the bottom of the first limiting plate 7 is fixed with a first screw 14, the top of the base 11 is provided with a mounting hole 15, and the outer side of the first screw 14 is threadedly connected to the inner wall of the mounting hole 15. The top of the second limiting plate 8 is fixed with a second screw 16, and the outer side of the second screw 16 is threadedly connected to the inner wall of the pressure plate 6.

[0036] The first screw 14 is used to securely install the first limiting plate 7 on the base 11, ensuring the positional stability of the first limiting plate 7 during operation. The mounting hole 15, through cooperation with the first screw 14, uses a threaded connection to install the first limiting plate 7 on the base 11, providing an accurate installation position and a stable connection for the first limiting plate 7. The second screw 16 serves as a connection point for adjusting the position of the second limiting plate 8, and is used to connect the second limiting plate 8 to the pressure plate 6.

[0037] Example 3: This is the third embodiment of the present invention, which is based on the first two embodiments.

[0038] Specifically, a vertical plate 17 is fixed to the top of the base plate 1, and two sets of sliding grooves 18 are provided on the inner wall of the vertical plate 17. A U-shaped block 19 is slidably connected to the inner wall of the sliding groove 18, and the U-shaped opening of the U-shaped block 19 is used to fix the workpiece 21.

[0039] The upright plate 17 is provided to provide an installation and support structure for the U-shaped block 19. It is the basic support for the part of the fixture used to fix the workpiece 21, ensuring the stability of the workpiece 21 fixing structure. The slide groove 18 is provided to provide a sliding track for the U-shaped block 19, so that the U-shaped block 19 can move up and down in a straight line along the slide groove 18, making it convenient to adjust the position of the U-shaped block 19 to adapt to the fixing requirements of workpieces 21 of different sizes and shapes.

[0040] Specifically, the inner wall of the slide 18 is slidably connected with two sets of U-shaped blocks 19 with symmetrical upper and lower designs, and one side of the U-shaped block 19 is connected with a screw for fixing the workpiece; the opposite side wall of the U-shaped opening of the U-shaped block 19 is provided with a positioning block 22 for fixing the workpiece 21; a limit block 20 is fixed on one side of the upright plate 17, the limit block 20 is arranged parallel to the slide 18, and the U-shaped block 19 is slidably connected to the outer side of the limit block 20.

[0041] The workpiece 21 is placed inside the U-shaped block 19 and fixed by the positioning block 22. It is the component that directly supports and fixes the workpiece 21. Its symmetrical design can better adapt to the shape of the workpiece 21 and provide a stable fixing effect. It should be noted that the inner wall of the U-shaped block 19 is threaded with screws for fixing the workpiece 21. The setting of the limit block 20 can limit the sliding range of the U-shaped block 19, prevent the U-shaped block 19 from exceeding the specified range during the sliding process, and ensure the accuracy and safety of the movement of the U-shaped block 19. The workpiece 21 is the bearing that needs to be riveted and is the working object of the entire riveting fixture. Through the coordinated action of various components of the fixture, the accurate riveting connection of the workpiece 21 is achieved. The positioning block 22 is used to position the workpiece 21 placed inside the U-shaped block 19 to ensure that the workpiece 21 is accurately positioned during the riveting process and will not move or shift, thereby ensuring that the riveting quality meets the requirements.

[0042] Working principle: When using the bearing mechanical connection press-fit fixture, first place the inner ring of the bearing on the rivet 5 to ensure accurate bearing positioning. Next, place the workpiece 21 on the unloading mandrel 4. Fix the workpiece 21 to the positioning block 22 on the inner wall of the U-shaped block 19 to ensure stable position and prevent wobbling during subsequent operations. At the same time, tighten the screw on one side of the U-shaped block 19 until the screw abuts against the workpiece 21, making the workpiece 21 tightly connected to the U-shaped block 19. Then, start the press, and the press presses down on the workpiece 21. Under pressure, the workpiece 21 moves downward, simultaneously driving the U-shaped block 19 to slide downward along the sliding groove 18 on the inner wall of the vertical plate 17. The sliding of the U-shaped block 19 is controlled by the limit block 20. The pressure plate 6 acts as a guide and limiter to ensure accurate movement trajectory. As the workpiece 21 continues to be pressed down, the pressure plate 6 moves downward under force, the first limit plate 7 and the second limit plate 8 move closer to each other, the slide rod 91 slides on the inner wall of the first limit plate 7, the first disc spring 92 and the second disc spring 93 are compressed, generating elastic potential energy. At the same time, the riveting knife 5 performs a riveting operation on the bearing and the workpiece 21 under pressure, so that the two are tightly connected. After the riveting is completed, the press rises, the compressed first disc spring 92 and the second disc spring 93 release elastic potential energy, and push the first limit plate 7 and the second limit plate 8 to reset. At this time, the riveted workpiece 21 can be taken out from the U-shaped block 19, completing the entire continuous riveting operation.

[0043] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A press-fit clamp for mechanical connection of bearings, comprising a base plate (1), characterized in that: A base (2) is fixedly installed on the top of the base plate (1), a support block (3) is installed on the top of the base (2), a discharge mandrel (4) is slidably connected inside the support block (3), a rivet (5) is fixed on the top of the support block (3), a pressure plate (6) is sleeved on the outside of the discharge mandrel (4), and the outside of the pressure plate (6) is slidably connected to the inner wall of the support block (3); The pressure plate (6) is provided with a first limiting plate (7) and a second limiting plate (8) respectively. The second limiting plate (8) and the first limiting plate (7) are designed to be symmetrical. The outer sides of the first limiting plate (7) and the second limiting plate (8) are provided with reset components (9). The reset assembly (9) includes a slide rod (91) fixed to the bottom of the second limiting plate (8), and the slide rod (91) is slidably connected to the inner wall of the first limiting plate (7). A first disc spring (92) is sleeved on the outer side of the slide rod (91), and a second disc spring (93) abuts between the first limiting plate (7) and the second limiting plate (8).

2. The press-fit clamp for bearing mechanical connection as described in claim 1, characterized in that: The base (2) has an installation seat (10) inside, and the bottom of the installation seat (10) is fixedly connected to the top of the base plate (1). The top of the installation seat (10) is fixed with a base (11), and the base (11) is a conical structure.

3. The press-fit clamp for bearing mechanical connection as described in claim 2, characterized in that: A sleeve (12) is fitted on the outer side of the base (11), and a third disc spring (13) is fitted on the outer side of the base (11). The top of the third disc spring (13) is in contact with the inner wall of the sleeve (12), and the top of the sleeve (12) abuts against the bottom end of the second disc spring (93).

4. The press-fit clamp for bearing mechanical connection as described in claim 2, characterized in that: The bottom of the first limiting plate (7) is fixed with a first screw (14), the top of the base (11) is provided with a mounting hole (15), and the outer side of the first screw (14) is threadedly connected to the inner wall of the mounting hole (15). The top of the second limiting plate (8) is fixed with a second screw (16), and the outer side of the second screw (16) is threadedly connected to the inner wall of the pressure plate (6).

5. The press-fit clamp for bearing mechanical connection as described in claim 1, characterized in that: The top of the base plate (1) is fixed with a vertical plate (17). The inner wall of the vertical plate (17) is provided with two sets of sliding grooves (18). The inner wall of the sliding groove (18) is slidably connected with a U-shaped block (19). The U-shaped opening of the U-shaped block (19) is used to fix the workpiece (21).

6. The press-fit clamp for bearing mechanical connection as described in claim 5, characterized in that: The inner wall of the groove (18) is slidably connected with two sets of U-shaped blocks (19) with symmetrical upper and lower designs, and one side of the U-shaped block (19) is connected with screws for fixing the workpiece.

7. The press-fit clamp for bearing mechanical connection as described in claim 6, characterized in that: The U-shaped opening of the U-shaped block (19) is provided with a positioning block (22) for fixing the workpiece (21) on the opposite side wall.

8. The press-fit clamp for bearing mechanical connection as described in claim 6, characterized in that: A limiting block (20) is fixed on one side of the upright plate (17). The limiting block (20) is arranged parallel to the slide groove (18), and the U-shaped block (19) is slidably connected to the outer side of the limiting block (20).

9. The press-fit clamp for bearing mechanical connection as described in claim 1, characterized in that: Both the first disc spring (92) and the second disc spring (93) are provided with multiple disc springs along the axial direction.

10. The press-fit clamp for bearing mechanical connection as described in claim 1, characterized in that: The inner wall of the base (2) is threaded with multiple sets of fixing bolts (23), and the bottom end of the fixing bolts (23) is threaded with the inner wall of the base plate (1).

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