A metal bearing sleeve installation auxiliary tooling

Abstract

This invention relates to the field of metal bearing sleeve installation technology, specifically to an auxiliary tooling for metal bearing sleeve installation. The tooling includes: a tooling table with a movable cavity; a hydraulic assembly on the tooling table; and a bearing sleeve body and a bearing rod positioned below the hydraulic assembly on the tooling table. The tooling also includes: a limiting mechanism and a clamping mechanism. The limiting mechanism is used to circumferentially limit and fix the bearing sleeve body. By pre-fixing the bearing sleeve body, the bearing sleeve body and the tooling are initially limited in position. Even if the hydraulic system suddenly fails, the fixing plate can still hold the bearing sleeve body with the flange in a clamping state, avoiding safety accidents. The clamping mechanism is used to clamp the bearing sleeve body after the bearing rod is centered. Through physical guidance, it automatically compensates for the initial position deviation of the bearing rod, ensuring centering accuracy and preventing jamming caused by excessive tightening during the initial pressing stage.

Description

Technical Field

[0001] This invention relates to the field of metal bearing sleeve installation technology, specifically to an auxiliary tooling for metal bearing sleeve installation. Background Technology

[0002] Metal bearing sleeves are common components in the mechanical field, primarily used to support rotating shafts, reduce friction, or isolate parts. The metal bearing sleeve forms a precise fit with the outer ring of the bearing through its inner bore, converting sliding friction into rolling friction, significantly reducing energy loss during mechanical operation. Through precision machining, it ensures long-term stable bearing operation. Metal bearing sleeves are generally installed with the aid of hydraulic equipment. Activating the hydraulic system causes the hydraulic rod to press down. The hydraulic rod then compresses the bearing sleeve to install it onto the bearing rod.

[0003] In practical applications of bearing sleeves, some equipment uses bearing sleeves with flanges, i.e., flanges at one end for axial fixation. The edge thickness of the flange is generally less than the overall thickness of the bearing sleeve. When the hydraulic rod applies pressure, the pressure is axial. If the bearing rod shifts, this pressure may not be evenly distributed across the bearing sleeve, but rather concentrated on one side. This can cause excessive local stress on the flange edge, which is more prone to deformation due to its thinness. If the bearing rod shifts off-center from the bearing sleeve, it may generate uneven forces on the flange. Since the bearing sleeve and bearing rod are installed with an interference fit, once the bearing rod shifts, the uniformity of the interference fit will be disrupted. This can lead to localized stress concentration because uneven pressure distribution means that some areas may experience pressure exceeding the material's limits, causing deformation or damage to the bearing rod. Summary of the Invention

[0004] The purpose of this invention is to provide an auxiliary tooling for installing metal bearing sleeves, so as to solve the problems mentioned in the background art.

[0005] The technical solution adopted by this application to solve its technical problem is: an auxiliary tooling for installing metal bearing sleeves, comprising: a tooling table, wherein a movable cavity is formed on the tooling table, a hydraulic assembly is also provided on the tooling table, and a bearing sleeve body and a bearing rod are provided on the tooling table below the hydraulic assembly, and further comprising: A limiting mechanism is provided on a tooling table. The limiting mechanism includes fixed plates arranged circumferentially around the bearing sleeve body. The side of the fixed plate closest to the bearing sleeve body is set as an arc surface. The limiting mechanism is used to limit and fix the bearing sleeve body circumferentially. A clamping mechanism is located on the hydraulic assembly. The clamping mechanism includes clamping rods arranged in a circular pattern around the hydraulic assembly. A clamping block is fixedly provided at the bottom of the clamping rod. An inclined surface is provided at the bottom of the clamping block. The clamping mechanism is used to clamp the bearing sleeve body after the bearing rod is centered.

[0006] Preferably, the hydraulic assembly includes fixed seats symmetrically and fixedly mounted on the tooling table, connecting seats fixedly mounted between the fixed seats, the fixed seats and the connecting seats being vertically arranged, a hydraulic device fixedly mounted on the connecting seat, a through hole being provided through the connecting seat, a hydraulic rod being provided through the through hole, and one end of the hydraulic rod being connected to the hydraulic device.

[0007] Preferably, the limiting mechanism further includes a fixed plate fixedly mounted on the tooling table. The fixed plate has a through opening in the middle, which is concentric with the movable cavity. The fixed plate has several staggered grooves that are interconnected and arranged in a circular pattern with the center of the fixed plate as the origin.

[0008] Preferably, each of the interlaced grooves is slidably provided with a slider, the top of each slider is fixedly connected to a fixed plate, adjacent surfaces of the fixed plates are in contact with each other, and each fixed plate is fixedly provided with a protrusion.

[0009] Preferably, a rotating disk is rotatably connected to the outer surface of the fixed disk, and a second through-hole is provided in the middle of the rotating disk. The second through-hole and the first through-hole are concentrically arranged. A plurality of straight slots are provided through the rotating disk. The straight slots are arranged in a circle with the center of the rotating disk as the origin. The inner wall of the straight slot is in contact with the outer surface of the protrusion, and the protrusion slides in the straight slot.

[0010] Preferably, a plurality of teeth are fixedly provided on the outer surface of the fixed plate, and a groove is provided on one side of the teeth at the top of the tooling table. A rack is slidably arranged in the groove, and the rack meshes with the teeth.

[0011] Preferably, the clamping mechanism further includes a connecting plate fixedly disposed on the outer surface of the hydraulic rod, and the connecting plate has a plurality of through slots arranged in a circular arrangement with the center of the connecting plate as the origin.

[0012] Preferably, each of the through grooves is symmetrically fixed with a connecting rod, and each connecting rod is provided with a movable block, and each movable block is symmetrically provided with a connecting hole.

[0013] Preferably, the movable block is slidably connected to the connecting rod through a connecting hole, and a spring is sleeved on the connecting rod, with the spring located on the side of the movable block away from the center of the connecting plate.

[0014] Preferably, a second connecting hole is provided through the movable block, the inner wall of the second connecting hole is slidably connected to the abutment rod, a limit block is fixedly provided at the top of the abutment rod, and a second spring is sleeved on the outer surface of the abutment rod, the second spring being located between the connecting plate and the abutment block.

[0015] The beneficial effects of this application are: This application provides an auxiliary tooling for installing metal bearing sleeves. Before the hydraulic rod is pressed down, an external rack drive is activated to rotate a rotating disk. This, in turn, drives a fixing plate to move synchronously through a straight groove and a protrusion within the groove, thus fixing the outer surface of the bearing sleeve body. The flange on the bearing sleeve body is limited at the top of the fixing plate, preventing continuous downward displacement of the bearing sleeve body and restricting its lateral displacement. By pre-fixing the bearing sleeve body, the bearing sleeve body and the tooling are initially positioned. Even in the event of a sudden hydraulic system failure, the fixing plate can still hold the bearing sleeve body in a clamped state, preventing safety accidents.

[0016] This application provides an auxiliary tooling for installing metal bearing sleeves. During the downward pressing of the hydraulic rod, the abutment first contacts the bearing rod. Its inclined surface is squeezed upon contact with the bearing rod and moves gradually away from the bearing rod. When the side of the abutment is in contact with the bearing rod, the bearing rod is aligned with the center of the bearing sleeve body. During the continuous pressing, the abutment engages with the top of the bearing sleeve body with the limiting mechanism to completely fix the bearing sleeve body. At this time, the downward pressing of the hydraulic rod will align the center of the bearing rod with the center of the bearing sleeve body, ensuring that the bearing sleeve body is subjected to uniform extrusion force during installation. The physical guide automatically compensates for the initial position deviation of the bearing rod, ensuring the centering accuracy and preventing jamming caused by excessive tightness in the initial pressing stage.

[0017] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. These will be further described in detail below with reference to figures. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall partial cross-sectional structure of the present invention; Figure 3 This is a schematic diagram of a partial structure of the tooling table above the present invention; Figure 4 This is a schematic diagram of the fixed disk structure of the present invention; Figure 5 This is an exploded view of the limiting mechanism of the present invention; Figure 6 This is a schematic diagram of the slider movement direction structure of the present invention; Figure 7This is a schematic diagram of the overall structure of the clamping mechanism of the present invention; Figure 8 This is a schematic diagram of the explosive structure of the clamping mechanism of the present invention.

[0019] Drawing number explanation: 1. Tooling table; 2. Movable cavity; 3. Hydraulic assembly; 4. Fixed seat; 5. Connecting seat; 6. Hydraulic equipment; 7. Through hole; 8. Hydraulic rod; 9. Bearing sleeve body; 10. Bearing rod; 11. Limiting mechanism; 12. Fixed plate; 13. Through port one; 14. Interlaced groove; 15. Slider; 16. Fixed plate; 17. Protrusion; 18. Rotating plate; 19. Through port two; 20. Straight groove; 21. Tooth; 22. Slide groove; 23. Rack; 24. Clamping mechanism; 25. Connecting plate; 26. Through groove; 27. Connecting rod; 28. Movable block; 29. ​​Connecting hole one; 30. Connecting hole two; 31. Spring one; 32. Abutment rod; 33. Limiting block; 34. Spring two; 35. Abutment block; 36. Inclined surface. Detailed Implementation

[0020] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present application.

[0022] Please refer to Figures 1 to 8 A metal bearing sleeve installation auxiliary tooling includes: a tooling table 1, a movable cavity 2 on the tooling table 1, a hydraulic component 3 on the tooling table 1, a bearing sleeve body 9 and a bearing rod 10 on the tooling table 1 below the hydraulic component 3, the hydraulic component 3 includes fixed seats 4 symmetrically and fixedly arranged on the tooling table 1, connecting seats 5 fixedly arranged between the fixed seats 4, the fixed seats 4 and the connecting seats 5 are arranged vertically, a hydraulic device 6 is fixedly arranged on the connecting seats 5, a through hole 7 is provided through the connecting seats 5, a hydraulic rod 8 is provided through the through hole 7, and one end of the hydraulic rod 8 is connected to the hydraulic device 6.

[0023] The movable cavity 2, through its design, provides space for the bearing rod 10 to move when the hydraulic rod 8 presses against it. The hydraulic device 6, acting as a power source, pumps hydraulic oil into the cavity of the hydraulic rod 8 via an electric pump. This hydraulic pressure drives the piston, generating a linear thrust. This thrust is transmitted through the action surface at the end of the hydraulic rod 8 to the end face of the bearing rod 10, creating a relative force between the bearing sleeve body 9 and the bearing rod 10. This results in a small interference fit or a small clearance fit between the inner hole of the bearing sleeve body 9 and the outer ring of the bearing.

[0024] Please refer to Figures 1 to 5 A metal bearing sleeve installation auxiliary fixture further includes: a limiting mechanism 11, which is mounted on a fixture table 1. The limiting mechanism 11 includes fixed plates 16 arranged circumferentially around the bearing sleeve body 9. The side of the fixed plates 16 closest to the bearing sleeve body 9 is an arc surface. The limiting mechanism 11 is used to circumferentially limit and fix the bearing sleeve body 9. The limiting mechanism 11 also includes a fixed disk 12 fixedly mounted on the fixture table 1. A through-hole 13 is provided in the center of the fixed disk 12. The through-hole 13 is concentric with the movable cavity 2. Several staggered grooves 14 are provided on the fixed disk 12. The staggered grooves 14 are interconnected and arranged circumferentially with the center of the fixed disk 12 as the origin. A slider 15 is slidably mounted in each staggered groove 14. The top of each slider 15 is fixedly connected to the fixed plate 16. Adjacent surfaces of the fixed plates 16 are in contact with each other. A protrusion 17 is fixedly mounted on each fixed plate 16. A rotating disk 18 is rotatably connected to the outer surface of the fixed disk 12. A second through-hole 19 is provided through the middle of the rotating disk 18. The second through-hole 19 is concentric with the first through-hole 13. Several straight slots 20 are provided through the rotating disk 18. The straight slots 20 are arranged in a circle with the center of the rotating disk 18 as the origin. The inner wall of the straight slot 20 is in contact with the outer surface of the protrusion 17. The protrusion 17 slides in the straight slot 20.

[0025] A number of teeth 21 are fixedly provided on the outer surface of the fixed plate 12. A groove 22 is provided on one side of the teeth 21 at the top of the tooling table 1. A rack 23 is slidably arranged in the groove 22. The rack 23 meshes with the teeth 21. An external drive is connected to the rack 23. The external drive is configured to drive the rack 23 to reciprocate linearly in the groove 22.

[0026] Before the hydraulic rod 8 is pressed down, the external drive of the rack 23 is activated, causing the rotating disk 18 to rotate. This, in turn, drives the fixing plate 16 to move synchronously through the straight groove 20 and the protrusion 17 within the straight groove 20, fixing the outer surface of the bearing sleeve body 9. The flange on the bearing sleeve body 9 is limited to the top of the fixing plate 16, preventing the bearing sleeve body 9 from continuously moving downwards and restricting its lateral movement. By pre-fixing the bearing sleeve body 9, the bearing sleeve body 9 and the tooling are initially positioned. Even if the hydraulic system suddenly fails, the fixing plate 16 can still hold the bearing sleeve body 9 in a clamped state, avoiding safety accidents. After the bearing sleeve body 9 is fixed, the hydraulic pressing force only acts axially, avoiding wear caused by the displacement of the bearing sleeve body 9 in traditional installations.

[0027] Please refer to Figure 1 , Figure 2 as well as Figures 6 to 8 A metal bearing sleeve installation auxiliary tooling further includes: a clamping mechanism 24, located on a hydraulic component 3, comprising clamping rods 32 arranged circumferentially around the hydraulic component 3, with abutment blocks 35 fixedly disposed at the bottom of the clamping rods 32, and inclined surfaces 36 at the bottom of the abutment blocks 35. The clamping mechanism 24 is used to clamp the bearing sleeve body 9 after the bearing rod 10 is centered. The clamping mechanism 24 also includes a connecting plate 25 fixedly disposed on the outer surface of the hydraulic rod 8, with several through slots 26 through the connecting plate 25, arranged circumferentially with the center of the connecting plate 25 as the origin. Connecting rods 27 are symmetrically fixedly disposed in each of the through slots 26, with movable blocks 28 disposed on the connecting rods 27, and connecting holes 29 symmetrically disposed on the movable blocks 28. The movable blocks 28 are slidably connected to the connecting rods 27 through the connecting holes 29, and springs 31 are sleeved on the connecting rods 27, with the springs 31 located on the side of the movable blocks 28 away from the center of the connecting plate 25. A connecting hole 30 is provided through the movable block 28. The inner wall of the connecting hole 30 is slidably connected to the abutment 32. A limit block 33 is fixedly provided on the top of the abutment 32. A spring 34 is sleeved on the outer surface of the abutment 32. The spring 34 is located between the connecting plate 25 and the abutment 35.

[0028] During the downward pressing process of the hydraulic rod 8, the abutment 35 first contacts the bearing rod 10. Its inclined surface 36 is compressed upon contact with the bearing rod 10, gradually moving away from the bearing rod 10. When the side of the abutment 35 adheres to the bearing rod 10, it aligns the bearing rod 10 with the center of the bearing sleeve body 9. During continuous pressing, the abutment 35 engages with the limiting mechanism 11 to completely fix the bearing sleeve body 9. At this point, the downward pressing of the hydraulic rod 8 applies pressure to align the center of the bearing rod 10 with the center of the bearing sleeve body 9, ensuring that the bearing sleeve body 9 receives uniform compressive force during installation. Physical guidance automatically compensates for the initial positional deviation of the bearing rod 10, ensuring alignment accuracy and preventing jamming caused by excessive tightening during the initial pressing process. The pressure distribution is curved, with the pressure in the central area slightly higher than the edges. This gradient distribution ensures proper installation while preventing deformation of the sleeve end face. In conjunction with the limiting mechanism 11, it further prevents displacement or tilting of the bearing sleeve during pressing.

[0029] Based on all the above embodiments, the working principle of the present invention is as follows: The operator first places the bearing sleeve body 9 to be installed between the fixing plates 16. Under the action of gravity, the flange of the bearing sleeve body 9 fits against the top of the fixing plate 16. At this time, the arc surface of the fixing plate 16 is not completely fitted with the side wall of the bearing sleeve body 9. The external drive of the rack 23 is activated, causing the rack 23 to move linearly and simultaneously drive the rotating disk 18 to rotate through the teeth 21. When the rotating disk 18 starts to rotate, the protrusion 17 in the straight groove 20 drives the fixing plate 16 to move synchronously, causing the edge of the fixing plate 16 to gradually approach and fit against the periphery of the bearing sleeve body 9, fixing it in place. This prevents the bearing sleeve body 9 from continuously shifting downwards and restricts its lateral displacement. By fixing the bearing sleeve body 9 in advance, the bearing sleeve body 9 and the tooling can be initially limited. Even if the hydraulic system suddenly fails, the fixing plate 16 can still keep the bearing sleeve body 9 in a clamped state, avoiding safety accidents. After the bearing sleeve body 9 is fixed, the hydraulic pressing force only acts axially, avoiding wear caused by the displacement of the bearing sleeve body 9 in traditional installation. After the bearing sleeve body 9 is fixed, the bearing rod 10 is aligned with the bearing sleeve body 9 and placed. The hydraulic device 6 is started, and hydraulic oil is pumped into the hydraulic rod 8 cavity by the electric pump. The oil pressure pushes the piston to generate a linear thrust. This thrust causes the hydraulic rod 8 to gradually approach the bearing rod 10. During this process, the abutment block 35 first contacts the bearing rod 10 and presses against the support rod through its inclined surface 36, causing the movable block 28 to squeeze the spring 31, thus compressing the spring 31. During the further downward pressing, the side of the abutment block 35 will adhere to the outer surface of the bearing rod 10, thus... The bearing rod 10 is aligned with the center of the bearing sleeve body 9. When the hydraulic rod 8 continues to press down, causing its end to contact the top of the bearing rod 10, the abutment block 35 fits against the flange of the bearing sleeve body 9, thereby compressing the spring 34. The hydraulic rod 8 pushes the bearing rod 10 into the bearing sleeve body 9. The fixing plate 16 of the limiting mechanism 11 and the abutment block 35 of the pressing mechanism 24 together press the flanged bearing sleeve together, and the center of the bearing rod 10 is aligned by the pressing mechanism 24, ensuring the centering accuracy and preventing jamming caused by excessive tightness in the early stage of pressing. The pressure distribution is curved, with the pressure in the central area slightly higher than that at the edge. This gradient distribution ensures proper installation and avoids deformation of the sleeve end face. Used in conjunction with the limiting mechanism 11, it further prevents the bearing sleeve from shifting or tilting during the pressing process.

[0030] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary. Under the framework of this invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.

[0031] This invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. An auxiliary tooling for installing a metal bearing sleeve, comprising: A tooling table (1) is provided with a movable cavity (2). A hydraulic assembly (3) is also provided on the tooling table (1). A bearing sleeve body (9) and a bearing rod (10) are provided on the tooling table (1) below the hydraulic assembly (3). The tooling table (1) is characterized by further comprising: The limiting mechanism (11) is set on the tooling table (1). The limiting mechanism (11) includes a fixing plate (16) arranged in a circle around the bearing sleeve body (9). The side of the fixing plate (16) close to the bearing sleeve body (9) is set as an arc surface. The limiting mechanism (11) is used to limit and fix the bearing sleeve body (9) in the circumferential direction. The clamping mechanism (24) is located on the hydraulic assembly (3). The clamping mechanism (24) includes abutting rods (32) arranged in a circle around the hydraulic assembly (3). Abutting block (35) is fixedly provided at the bottom of the abutting rod (32). An inclined surface (36) is provided at the bottom of the abutting block (35). The clamping mechanism (24) is used to clamp the bearing sleeve body (9) after the bearing rod (10) is centered.

2. The auxiliary tooling for installing a metal bearing sleeve according to claim 1, characterized in that, The hydraulic assembly (3) includes fixed seats (4) symmetrically and fixedly mounted on the tooling table (1), connecting seats (5) fixedly mounted between the fixed seats (4), the fixed seats (4) and the connecting seats (5) being vertically mounted, a hydraulic device (6) fixedly mounted on the connecting seat (5), a through hole (7) being provided through the connecting seat (5), a hydraulic rod (8) being provided through the through hole (7), and one end of the hydraulic rod (8) being connected to the hydraulic device (6).

3. The auxiliary tooling for installing a metal bearing sleeve according to claim 1, characterized in that, The limiting mechanism (11) also includes a fixed plate (12) fixedly mounted on the tooling table (1). A through opening (13) is provided in the middle of the fixed plate (12). The through opening (13) is concentrically arranged with the movable cavity (2). A number of intersecting grooves (14) are provided on the fixed plate (12). The intersecting grooves (14) are interconnected and arranged in a circular pattern with the center of the fixed plate (12) as the origin.

4. The auxiliary tooling for installing a metal bearing sleeve according to claim 3, characterized in that, Each of the interlaced grooves (14) is slidably provided with a slider (15), the top of each slider (15) is fixedly connected to a fixing plate (16), the adjacent surfaces of the fixing plates (16) are in contact with each other, and each fixing plate (16) is fixedly provided with a protrusion (17).

5. The auxiliary tooling for installing a metal bearing sleeve according to claim 4, characterized in that, The fixed disk (12) is rotatably connected to the outer surface of the rotating disk (18). The rotating disk (18) has a through-hole two (19) through the middle. The through-hole two (19) is concentric with the through-hole one (13). The rotating disk (18) has several straight slots (20) through it. The straight slots (20) are arranged in a circle with the center of the rotating disk (18) as the origin. The inner wall of the straight slot (20) is in contact with the outer surface of the protrusion (17). The protrusion (17) slides in the straight slot (20).

6. The auxiliary tooling for installing a metal bearing sleeve according to claim 5, characterized in that, The outer surface of the fixed plate (12) is fixedly provided with a number of teeth (21). A groove (22) is provided on one side of the teeth (21) at the top of the tooling table (1). A rack (23) is slidably arranged in the groove (22). The rack (23) meshes with the teeth (21).

7. The auxiliary tooling for installing a metal bearing sleeve according to claim 1, characterized in that, The clamping mechanism (24) also includes a connecting plate (25) fixedly disposed on the outer surface of the hydraulic rod (8). A plurality of through slots (26) are provided on the connecting plate (25), and the through slots (26) are arranged in a circle with the center of the connecting plate (25) as the origin.

8. The auxiliary tooling for installing a metal bearing sleeve according to claim 7, characterized in that, Connecting rods (27) are symmetrically fixed in the through groove (26), and movable blocks (28) are provided on the connecting rods (27). Connecting holes (29) are symmetrically opened on the movable blocks (28).

9. The auxiliary tooling for installing a metal bearing sleeve according to claim 8, characterized in that, The movable block (28) is slidably connected to the connecting rod (27) through the connecting hole (29). A spring (31) is sleeved on the connecting rod (27). The spring (31) is located on the side of the movable block (28) away from the center of the connecting plate (25).

10. The auxiliary tooling for installing a metal bearing sleeve according to claim 9, characterized in that, The movable block (28) has a connecting hole 2 (30) through it. The inner wall of the connecting hole 2 (30) is slidably connected to the abutment rod (32). A limit block (33) is fixedly installed on the top of the abutment rod (32). A spring 2 (34) is sleeved on the outer surface of the abutment rod (32). The spring 2 (34) is located between the connecting plate (25) and the abutment block (35).

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