A bearing press device for bearing assembly

Abstract

The utility model discloses a bearing press -fitting device for bearing assembly, including work table and center clamping mechanism, work table: its upper surface middle part is fixedly connected with the installation box for press -fitting, and the lower side wall middle part of installation box for press -fitting is fixedly connected with the placement cylinder, and the inside of placement cylinder is placed with the shaft sleeve placement seat, and the upper side of work table is equipped with the press -sleeve, center clamping mechanism: it includes the rotation groove, rubber bushing, carousel, arc -shaped groove and center clamping post, and the inside of installation box for press -fitting is opened in the rotation groove, and the inside rotation of rotation groove is connected with carousel, and the upper surface and the lower surface of carousel are fixedly connected with rubber bushing respectively, and the upper surface of carousel is opened with the arc -shaped groove of uniform distribution, and the inside of arc -shaped groove is slidably connected with center clamping post respectively, and this bearing press -fitting device for bearing assembly is simple to operate, and the press -sleeve press -fitting operation of subsequent is convenient, and reduces the failure rate of bearing press -fitting.

Description

Technical Field

[0001] This utility model relates to the field of pressure-bearing assembly technology, specifically a bearing press-fitting device for bearing assembly. Background Technology

[0002] A bearing press-fitting machine is an automated / semi-automated device specifically designed to precisely and stably press bearings (or other interference fit parts) onto workpieces such as shafts, hubs, or housings. Its core function is to achieve reliable assembly of interference fits through controllable pressure and precise positioning, thereby avoiding bearing damage and ensuring assembly accuracy. In the prior art, patent publication number CN210756254U discloses a bearing press-fitting device for bearing assembly, including a base, a bracket, and a worktable. A press-fitting support rod is fixedly installed on one side of the top of the base, and a press-fitting platform is fixedly installed on the top of the press-fitting support rod. A heat insulation plate is fixedly installed on the other side of the top of the base, and a support rod is fixedly installed on the top of the heat insulation plate. A heating platform is fixedly installed on the top of the support rod, and a compression cylinder is installed in the middle of the top of the worktable. The bearing press-fitting device for bearing assembly has some problems in actual use. For example, although it is equipped with an infrared detector and an alarm to remind the operator whether the press-fitting head corresponds to the bearing position, the parts that need to be press-fitted still need to be manually positioned by the operator, which is a complicated operation. Therefore, we propose a bearing press-fitting device for bearing assembly. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a bearing press-fitting device for bearing assembly, which reduces the failure rate of bearing press-fitting and can effectively solve the problems in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a bearing press-fitting device for bearing assembly, comprising a worktable and a centering clamping mechanism; Workbench: A press-fit mounting box is fixedly connected to the middle of its upper surface, and a placement cylinder is fixedly connected to the middle of the lower side wall of the press-fit mounting box. A bushing placement seat is placed inside the placement cylinder, and a pressure sleeve is provided on the upper side of the workbench. Centering clamping mechanism: It includes a rotating groove, a rubber sleeve, a turntable, an arc groove, and a centering clamping column. The rotating groove is opened inside the mounting box for pressing. The turntable is rotatably connected inside the rotating groove. The upper and lower surfaces of the turntable are respectively fixedly connected to the rubber sleeve. The upper surface of the turntable has evenly distributed arc grooves. The centering clamping column is slidably connected inside the arc grooves, which facilitates the subsequent pressing operation of the pressing sleeve and reduces the error rate of bearing pressing.

[0005] Furthermore, a controller is provided on the right side of the workbench. The input terminal of the controller is electrically connected to an external power source to control the normal operation of each electrical appliance.

[0006] Furthermore, the centering clamping mechanism also includes a worm gear and a worm. The worm gear is fixedly sleeved on the outer arc surface of the turntable, and the worm is rotatably connected between the left and right inner walls of the rotating groove. The worm gear and the worm are meshed together. A motor is fixedly connected to the rear side of the left side of the press-fitting mounting box. The output shaft of the motor is fixedly connected to the left end of the worm, and the input end of the motor is electrically connected to the output end of the controller to provide power for the centering clamping.

[0007] Furthermore, the centering clamping mechanism also includes dovetail groove guide rails and dovetail sliders. The dovetail groove guide rails are uniformly and fixedly connected to the upper side wall of the press-fitting mounting box. Dovetail sliders are slidably connected inside the eight dovetail groove guide rails. The upper surfaces of the eight dovetail sliders are fixedly connected to the lower surfaces of the centering clamping columns corresponding to the vertical positions, thereby improving the stability of the centering clamping columns when they move.

[0008] Furthermore, a pressure sensor is fixedly connected to the middle of the lower side wall of the placement cylinder. The upper surface of the upper diaphragm of the pressure sensor is in contact with the lower surface of the bushing placement seat. The pressure sensor is bidirectionally electrically connected to the controller to measure pressure information in real time.

[0009] Furthermore, fixed rods are fixedly connected to the four corners of the upper surface of the workbench, and an upper mounting plate is fixedly connected to the upper end of the four fixed rods. A hydraulic cylinder is fixedly connected to the upper surface of the upper mounting plate. The telescopic end of the hydraulic cylinder is fixedly connected to the upper end of the pressure sleeve. An external oil pump is connected to the oil inlet of the hydraulic cylinder to control the vertical movement of the pressure sleeve.

[0010] Furthermore, a vertical moving plate is fixedly connected to the outer arc surface of the four fixed rods. The middle part of the vertical moving plate is fixedly connected to the outer surface of the pressure sleeve. The upper surface of the vertical moving plate is provided with evenly distributed clearance grooves. The eight clearance grooves correspond to the eight centering clamps in a vertical position, which improves the stability of the pressure sleeve when it moves vertically.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This bearing press-fitting device for bearing assembly has the following advantages: Using eight centering clamps that move close to or far apart from each other, the bushing of the bearing to be press-fitted is simultaneously clamped from eight directions, which can center and hold the bushing. This makes the operation simple, facilitates the subsequent pressing operation of the bushing, and reduces the error rate of bearing pressing. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a front view structural diagram of the present invention; Figure 3 This is a schematic diagram of the installation box for press fitting according to this utility model; Figure 4 This is a cross-sectional structural diagram of the mounting box for press fitting according to this utility model; Figure 5 This is an exploded structural diagram of the centering and clamping mechanism of this utility model.

[0013] In the diagram: 1. Workbench, 2. Press-fit mounting box, 3. Centering clamping mechanism, 31. Rotary groove, 32. Rubber sleeve, 33. Turntable, 34. Worm gear, 35. Worm, 36. Arc groove, 37. Dovetail groove guide rail, 38. Dovetail slider, 39. Centering clamping column, 4. Motor, 5. Placement cylinder, 6. Shaft sleeve placement seat, 7. Pressure sensor, 8. Fixing rod, 9. Upper mounting plate, 10. Press sleeve, 11. Hydraulic cylinder, 12. Controller, 13. Clearance groove, 14. Vertical moving plate. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-5 This embodiment provides a technical solution: a bearing press-fitting device for bearing assembly, including a worktable 1 and a centering clamping mechanism 3; Workbench 1: A pressing mounting box 2 is fixedly connected to the middle of its upper surface. A placement cylinder 5 is fixedly connected to the middle of the lower side wall of the pressing mounting box 2. A bushing placement seat 6 is placed inside the placement cylinder 5. A pressing sleeve 10 is provided on the upper side of the workbench 1. A controller 12 is provided on the right side of the workbench 1. The input end of the controller 12 is electrically connected to an external power source. A pressure sensor 7 is fixedly connected to the middle of the lower side wall of the placement cylinder 5. The upper surface of the diaphragm of the pressure sensor 7 is in contact with the lower surface of the bushing placement seat 6. The pressure sensor 7 is bidirectionally electrically connected to the controller 12. Fixing rods 8 are fixedly connected to the four corners of the upper surface of the workbench 1. The upper ends of the four fixing rods 8 are fixedly connected to... A top mounting plate 9 is connected to the upper surface of the top mounting plate 9, and a hydraulic cylinder 11 is fixedly connected to the upper end of the pressure sleeve 10. The oil inlet of the hydraulic cylinder 11 is connected to an external oil pump. A vertical moving plate 14 is fixedly connected to the outer arc surface of the four fixed rods 8. The middle part of the vertical moving plate 14 is fixedly connected to the outer surface of the pressure sleeve 10. The upper surface of the vertical moving plate 14 is provided with evenly distributed clearance grooves 13. The eight clearance grooves 13 correspond vertically to the eight centering clamps 39. When the bearing press-fitting device is needed, the bearing can be installed on the bushing, and then the bushing parts can be placed on the bushing placement seat 6. At this point, the external oil pump can be adjusted, and the hydraulic cylinder 11 operates. The extension end of the hydraulic cylinder 11 extends, thereby pushing the pressure sleeve 10 downward. (During the extension or retraction of the extension end of the hydraulic cylinder 11, it will directly push the vertical moving plate 14 to move vertically up and down. The four corners of the vertical moving plate 14 are slidably connected to the outer arc surfaces of the four fixed rods 8. During the restriction of the vertical moving plate 14, it is kept parallel to the upper surface of the worktable 1. The vertical moving plate 14 moves vertically perpendicular to the upper surface of the worktable 1 without shaking itself, ensuring the stability of the extension end of the hydraulic cylinder 11 during extension and retraction. The hydraulic cylinder 11 will not be subjected to large radial forces.) (In case of force, the bearing may be easily damaged). During this process, the pressure sleeve 10 will press the bearing and press it into the inside of the bushing. During this period, the controller 12 operates, and the elastic diaphragm of the pressure sensor 7 directly bears the pressure and produces uniform deformation. The strain gauge attached to the lower side of the elastic diaphragm converts the diaphragm deformation into its own resistance change, and amplifies the tiny resistance change of the strain gauge into a detectable voltage signal. The millivolt-level weak signal output by the processing bridge of the pressure sensor 7 is converted into a standard industrial signal and sent to the controller 12. The controller 12 judges the pressure information through the real-time electrical signal. When the pressure value reaches the specified threshold, it indicates that the bearing press-fitting operation has been completed. Centering clamping mechanism 3: It includes a rotating groove 31, a rubber sleeve 32, a turntable 33, an arc-shaped groove 36, and a centering clamping post 39. The rotating groove 31 is opened inside the press-fitting mounting box 2. The turntable 33 is rotatably connected inside the rotating groove 31 (the inner arc surface of the rotating groove 31 has a stepped surface, and the upper and lower sidewalls of the turntable 33 also have stepped layers. The stepped layers on the rotating groove 31 and the stepped layers on the turntable 33 are in contact with each other and maintain a sliding connection). The upper and lower surfaces of the turntable 33 are respectively fixedly connected to the rubber sleeves 32 (the two rubber sleeves 32 here maintain a sliding connection with the inner arc surface of the rotating groove 31 to prevent external dust from entering the interior of the rotating groove 31 and contaminating the transmission components). The upper surface of the turntable 33 has evenly distributed... The arc-shaped groove 36 of the cloth and the interior of the arc-shaped groove 36 are respectively slidably connected to centering clamping columns 39. The centering clamping mechanism 3 also includes a worm wheel 34 and a worm 35 (the worm wheel 34 and the worm 35 adopt a planar double-envelope worm wheel and worm 35. The worm wheel 34 adopts a complex tooth surface formed by double envelopment. When the tooth surface of the worm 35 meshes with the tooth surface of the worm wheel 34, a "continuous contact area" can be formed. The surface contact disperses the load, the pressure per unit area is greatly reduced, the surface contact fit is high, the "effective transmission ratio" of sliding friction is increased, and thus the transmission accuracy is improved). The worm wheel 34 is fixedly sleeved on the outer arc surface of the turntable 33. The worm 35 is rotatably connected between the left and right inner walls of the turntable 31. The worm wheel 34 and the worm 35 are meshed and connected. The left side of the press-fitting mounting box 2 A motor 4 is fixedly connected to the side and rear. The output shaft of the motor 4 is fixedly connected to the left end of the worm gear 35. The input end of the motor 4 is electrically connected to the output end of the controller 12. The centering clamping mechanism 3 also includes dovetail guide rails 37 and dovetail sliders 38. The dovetail guide rails 37 are evenly fixedly connected to the upper side wall of the press-fitting mounting box 2. Dovetail sliders 38 are slidably connected inside the eight dovetail guide rails 37 respectively. The upper surface of the eight dovetail sliders 38 is fixedly connected to the lower surface of the centering clamping column 39 corresponding to the vertical position. At this time, the position of the eight centering clamping columns 39 can be adjusted according to the size of the bushing. Specifically, the controller 12 is controlled, the motor 4 is turned, the output shaft of the motor 4 rotates, and thus drives the worm gear 35 to rotate. Due to the meshing relationship between the worm gear 34 and the worm 35, the turntable 33 is driven to rotate clockwise and counterclockwise. The centering clamp 39 and the arc groove 36 maintain a sliding connection in real time. During this period, when the turntable 33 rotates clockwise, it drives the eight centering clamps 39 to move towards the center of the press-fitting mounting box 2 at the same time. When they move to the designated position, the outer arc surfaces of the eight centering clamps 39 will clamp the outer arc surface of the bushing from eight directions. At this time, the central axis of the bushing, the central axis of the bearing, the central axis of the bushing placement seat 6, and the central axis of the press sleeve 10 coincide, completing the bearing press-fitting operation. At this time, the controller 12 is activated, the press sleeve 10 is reset, the centering clamps 39 are released from centering clamping, and the press-fitted bushing can be manually removed.

[0016] The working principle of the bearing press-fitting device for bearing assembly provided by this utility model is as follows: When the bearing press-fitting device is needed, the bearing can be installed on the bushing, and then the bushing part can be placed on the upper surface of the bushing placement seat 6. At this time, the positions of the eight centering clamps 39 can be adjusted according to the size of the bushing. Specifically, the controller 12 is controlled, the motor 4 is turned, the output shaft of the motor 4 rotates, and then drives the worm 35 to rotate. Due to the meshing relationship between the worm wheel 34 and the worm 35, the turntable 33 is driven to rotate clockwise and counterclockwise. The centering clamps 39 and the arc groove 36 maintain a sliding connection relationship in real time. During this period, when the turntable 33 rotates clockwise, it drives the eight centering clamps 39 to move towards the center of the press-fitting mounting box 2 at the same time. When they move to the designated position, the outer arc surfaces of the eight centering clamps 39 will clamp the outer arc surface of the bushing from eight directions. At this time, the central axis of the bushing, the central axis of the bearing, and the central axis of the bushing placement seat 6 are aligned. When the central axis of the mandrel and the central axis of the pressure sleeve 10 are aligned, the external oil pump can be adjusted to operate the hydraulic cylinder 11. The telescopic end of the hydraulic cylinder 11 extends and pushes the pressure sleeve 10 downward. During this process, the pressure sleeve 10 presses against the bearing and presses it into the inside of the bushing. During this period, the controller 12 operates, and the elastic diaphragm of the pressure sensor 7 directly bears the pressure and produces uniform deformation. The strain gauge attached to the lower side of the elastic diaphragm converts the diaphragm deformation into its own resistance change, amplifying the tiny resistance change of the strain gauge into a detectable voltage signal. The millivolt-level weak signal output by the processing bridge of the pressure sensor 7 is converted into a standard industrial signal and sent to the controller 12. The controller 12 judges the pressure information through the real-time electrical signal. When the pressure value reaches the specified threshold, it indicates that the bearing pressing operation has been completed. At this time, the controller 12 is controlled, the pressure sleeve 10 is reset, the centering clamp 39 is released from centering clamping, and the pressed bushing can be manually removed.

[0017] It is worth noting that the core chip of the controller 12 disclosed in the above embodiments is a single-chip microcomputer, specifically the S7-200. The motor 4, pressure sensor 7 and hydraulic cylinder 11 can be freely configured according to the actual application scenario. It is recommended that the motor 4 be an MS series servo motor, the pressure sensor 7 be an STB23 series flat diaphragm pressure sensor, and the hydraulic cylinder 11 be an HSG series hydraulic cylinder. The controller 12 controls the operation of the motor 4 and the pressure sensor 7 using methods commonly used in the prior art.

[0018] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A bearing press-fitting device for bearing assembly, characterized in that: It includes a worktable (1) and a centering clamping mechanism (3); Workbench (1): A press-fit mounting box (2) is fixedly connected to the middle of its upper surface. A placement cylinder (5) is fixedly connected to the middle of the lower side wall of the press-fit mounting box (2). A bushing placement seat (6) is placed inside the placement cylinder (5). A pressure sleeve (10) is provided on the upper side of the workbench (1). Centering clamping mechanism (3): It includes a rotating groove (31), a rubber sleeve (32), a turntable (33), an arc groove (36), and a centering clamping column (39). The rotating groove (31) is opened inside the press-fitting mounting box (2). The turntable (33) is rotatably connected inside the rotating groove (31). The upper and lower surfaces of the turntable (33) are respectively fixedly connected to the rubber sleeve (32). The upper surface of the turntable (33) is provided with evenly distributed arc grooves (36). The centering clamping column (39) is slidably connected inside the arc grooves (36).

2. The bearing press-fitting device for bearing assembly according to claim 1, characterized in that: The right side of the workbench (1) is provided with a controller (12), and the input end of the controller (12) is electrically connected to an external power source.

3. The bearing press-fitting device for bearing assembly according to claim 2, characterized in that: The centering clamping mechanism (3) also includes a worm wheel (34) and a worm (35). The worm wheel (34) is fixedly sleeved on the outer arc surface of the turntable (33). The worm (35) is rotatably connected between the left and right inner walls of the rotating groove (31). The worm wheel (34) and the worm (35) are meshed together. The motor (4) is fixedly connected to the rear side of the left side of the press-fitting mounting box (2). The output shaft of the motor (4) is fixedly connected to the left end of the worm (35). The input end of the motor (4) is electrically connected to the output end of the controller (12).

4. The bearing press-fitting device for bearing assembly according to claim 1, characterized in that: The centering clamping mechanism (3) also includes dovetail groove guide rails (37) and dovetail sliders (38). The dovetail groove guide rails (37) are uniformly fixedly connected to the upper side wall of the press-fitting mounting box (2). Dovetail sliders (38) are slidably connected inside the eight dovetail groove guide rails (37). The upper surfaces of the eight dovetail sliders (38) are fixedly connected to the lower surfaces of the centering clamping columns (39) corresponding to the vertical positions.

5. A bearing press-fitting device for bearing assembly according to claim 2, characterized in that: A pressure sensor (7) is fixedly connected to the middle of the lower side wall of the placement cylinder (5). The upper surface of the upper diaphragm of the pressure sensor (7) is in contact with the lower surface of the bushing placement seat (6). The pressure sensor (7) is bidirectionally electrically connected to the controller (12).

6. A bearing press-fitting device for bearing assembly according to claim 1, characterized in that: The workbench (1) has four fixed rods (8) fixedly connected to the four corners of the upper surface. The upper ends of the four fixed rods (8) are fixedly connected to an upper mounting plate (9). The upper surface of the upper mounting plate (9) is fixedly connected to a hydraulic cylinder (11). The telescopic end of the hydraulic cylinder (11) is fixedly connected to the upper end of the pressure sleeve (10). The oil inlet of the hydraulic cylinder (11) is connected to an external oil pump.

7. A bearing press-fitting device for bearing assembly according to claim 6, characterized in that: A vertical moving plate (14) is fixedly connected to the outer arc surface of the four fixed rods (8). The middle part of the vertical moving plate (14) is fixedly connected to the outer surface of the pressure sleeve (10). The upper surface of the vertical moving plate (14) is provided with uniformly distributed clearance grooves (13). The eight clearance grooves (13) correspond to the eight centering clamps (39) in a vertical position.

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