A bearing press fitting device

Abstract

The utility model relates to bearing technical field especially a kind of bearing press equipment, including workbench, the workbench top is fixedly installed with electric telescopic link, the electric telescopic link lower end is fixedly installed with lifting plate, the lifting plate lower surface is fixedly installed with receiving seat, the receiving seat inside is fixedly installed with magnetic attraction piece, the receiving seat lower end outside is fixedly installed with sleeve shell, the workbench bottom is fixedly installed with base, the base upper surface is fixedly installed with elastic mechanism, the elastic mechanism upper end is fixedly connected with floating frame, the floating frame upper surface is set with placing groove, this bearing press equipment can adjust the height of sleeve shell according to the length of shaft, can support limit to shaft lower end, can avoid deformation or fracture in the process of press fitting.

Description

Technical Field

[0001] This utility model relates to the field of bearing technology, and in particular to a bearing press-fitting device. Background Technology

[0002] In the field of mechanical manufacturing, the press-fitting of bearings and shafts is a key process for achieving rotational fit between components and plays a decisive role in the quality of equipment assembly. This process has a wide range of applications, covering the production processes of various core equipment such as the assembly of motor rotors and bearings, the installation of machine tool spindle bearings, and the assembly of automotive transmission system components. It is a fundamental link to ensure the stability of equipment operation.

[0003] Currently, bearing press-fitting equipment on the market typically includes tooling for fixing shafts or bearings and a drive mechanism (such as cylinders, electric telescopic rods, etc.) that provides press-fitting power. Its core working principle is to apply axial pressure through the drive mechanism to make the shaft and bearing form an interference fit, thereby completing the assembly.

[0004] However, the existing shaft fixing mechanism of press-fitting equipment has limitations. It can only fix and limit the upper end or middle of the shaft. For long shafts, the lower end or the part far from the fixed end will be suspended. During press-fitting, the drive mechanism applies downward force, and the shaft must bear the axial pressure and its own weight at the same time. Due to the lack of lower support, the torque imbalance occurs, which can easily cause radial bending deformation, thereby compromising the fit accuracy between the shaft and the bearing. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies that cannot support and limit the lower end of long shafts, and to propose a bearing press-fitting device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Design a bearing press-fitting device, including a workbench, an electric telescopic rod fixedly installed on the top of the workbench, a lifting plate fixedly installed at the lower end of the electric telescopic rod, a receiving seat fixedly installed on the lower surface of the lifting plate, a magnetic block fixedly installed inside the receiving seat, a sleeve shell threaded on the outer side of the lower end of the receiving seat, a base fixedly installed at the bottom of the workbench, an elastic mechanism fixedly installed on the upper surface of the base, a floating frame fixedly connected to the upper end of the elastic mechanism, and a placement groove opened on the upper surface of the floating frame.

[0008] Preferably, the elastic mechanism includes a fixed box, a damping spring is fixedly installed inside the fixed box, a guide block is fixedly installed at the upper end of the damping spring, and the upper end of the guide block extends to the top of the fixed box and is fixedly connected to the lower surface of the floating frame.

[0009] Preferably, a sleeve block is rotatably connected to one side of the worktable, a support rod is fixedly connected to one side of the sleeve block, and a fan is rotatably connected to the end of the support rod via a connecting shaft seat.

[0010] Preferably, the central axis of the sleeve block is vertically arranged, and the length direction of the support rod is horizontally arranged.

[0011] Preferably, the central axes of the floating frame, the electric telescopic rod, the receiving seat, and the sleeve shell coincide.

[0012] The bearing press-fitting equipment proposed in this utility model has the following advantages: When the bearing press-fitting equipment is working, the height of the rotating sleeve can be adjusted according to the specific length of the shaft, which does not interfere with the press-fitting operation and can form a stable support for the lower end of the shaft, further ensuring that the shaft remains vertical during press-fitting, reducing press-fitting deviations caused by inaccurate shaft positioning, and the height of the sleeve can be flexibly adjusted according to the length of the shaft, without the need to replace the sleeve for shafts of different lengths. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a bearing press-fitting device proposed in this utility model;

[0014] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure at point AA;

[0015] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure at point BB;

[0016] Figure 4 This is a three-dimensional structural diagram of the bearing press-fitting equipment proposed in this utility model, showing the bearing seat and the sleeve shell.

[0017] In the diagram: 1. Workbench; 2. Electric telescopic rod; 3. Lifting plate; 4. Receiving seat; 5. Sleeve housing; 6. Magnetic block; 7. Base; 8. Floating frame; 9. Fixing box; 10. Guide block; 11. Damping spring; 12. Sleeve block; 13. Support rod; 14. Connecting shaft seat; 15. Fan; 16. Placement slot. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Example 1: Refer to Figure 1-4A bearing press-fitting device includes a worktable 1. An electric telescopic rod 2 is fixedly installed on the top of the worktable 1. A lifting plate 3 is fixedly installed at the lower end of the electric telescopic rod 2. The electric telescopic rod 2 can drive the lifting plate 3 to move up and down. A receiving seat 4 is fixedly installed on the lower surface of the lifting plate 3. The upper end of the shaft workpiece extends into the receiving seat 4. A magnetic block 6 is fixedly installed inside the receiving seat 4, and the upper end of the shaft is magnetically fixed inside the receiving seat 4 by the magnetic block 6. A sleeve shell 5 is threaded onto the outer side of the lower end of the receiving seat 4. When the sleeve shell 5 is turned, a relative displacement occurs between the sleeve shell 5 and the receiving seat 4, and the lower end of the sleeve shell 5 is movably sleeved on the outer side of the shaft workpiece. When the length of the shaft workpiece is long, turning the sleeve shell 5 downwards moves its lower end to the lower end of the shaft workpiece, which can support and limit the lower end of the shaft workpiece, preventing deformation or breakage during press-fitting, further ensuring that the shaft remains vertical during press-fitting, and reducing press-fitting deviations caused by inaccurate shaft positioning. The lower end of the shaft workpiece extends below the sleeve housing 5, and the exposed part of the shaft workpiece can be press-fitted with the bearing or other mating components below.

[0020] A base 7 is fixedly installed at the bottom of the workbench 1. An elastic mechanism is fixedly installed on the upper surface of the base 7. A floating frame 8 is fixedly connected to the upper end of the elastic mechanism. The central axes of the floating frame 8, the electric telescopic rod 2, the receiving seat 4, and the sleeve shell 5 are coincident. A placement groove 16 is opened on the upper surface of the floating frame 8. The placement groove 16 is used to place bearings or other components that mate with the shaft.

[0021] The elastic mechanism includes a fixed box 9, inside which a damping spring 11 is fixedly installed. A guide block 10 is fixedly installed on the upper end of the damping spring 11. The upper end of the guide block 10 extends above the fixed box 9 and is fixedly connected to the lower surface of the floating frame 8. The damping spring 11 provides elastic support to the guide block 10, thereby providing an upward elastic force to the floating frame 9 through the guide block 10. When the axial movement is downward and contacts the bearing, the bearing and the floating frame 8 are simultaneously subjected to pressure. As the floating frame 8 moves downward, the shaft and the bearing also move downward, allowing the bearing end face to fit more closely with the shaft, avoiding displacement of the press-fit position caused by impact. It also protects the workpiece, preventing the mating surface between the bearing inner ring and the shaft from being damaged, deformed, or cracked due to instantaneous impact.

[0022] Working principle: When this bearing press-fitting equipment is working, firstly, the shaft is placed inside the receiving seat 4 and magnetically fixed inside the receiving seat 4 using the magnetic block 6. The sleeve shell 5 is rotated to adjust its height according to the specific length of the shaft, so that the lower end of the sleeve shell 5 is close to the lower end of the shaft, allowing the lower end of the shaft to be exposed at a suitable distance. This does not affect the press-fitting of the shaft and can support the lower end of the shaft. Next, the bearing is placed inside the placement groove 16. The electric telescopic rod 2 is activated to drive the lifting plate 3 to move down. The lifting plate 3 drives the receiving seat 4 to move down, thereby driving the shaft to move down. When the shaft moves down and contacts the bearing, the bearing and the floating frame 8 are subjected to pressure and move down, which can play a buffering and protective role. When the shaft is completely pressed into the bearing, the press-fitting work is completed.

[0023] Example 2: In Example 1, if there is dust or impurities on the inner ring surface of the bearing and the end surface of the shaft, it will affect the quality of the press-fitting of the shaft and bearing. Therefore, this example is proposed. (Refer to...) Figure 1-2 In another preferred embodiment of this utility model, based on embodiment 1, a sleeve block 12 is rotatably connected to one side of the workbench 1. The central axis of the sleeve block 12 is vertically set, and the sleeve block 12 can be rotated as needed. A support rod 13 is fixedly connected to one side of the sleeve block 12. The support rod 13 is horizontally set in the length direction. A fan 15 is rotatably connected to the end of the support rod 13 through a connecting shaft seat 14. The angle of the fan 15 can be adjusted according to the range of motion of the connecting shaft seat 14. The fan 15 faces the shaft and bearing. Activating the fan 15 can blow away the dust and impurities on their surface before pressing, which can improve the quality of pressing the shaft and bearing.

[0024] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A bearing press-fitting device, comprising a worktable (1), characterized in that, An electric telescopic rod (2) is fixedly installed on the top of the workbench (1). A lifting plate (3) is fixedly installed at the lower end of the electric telescopic rod (2). A receiving seat (4) is fixedly installed on the lower surface of the lifting plate (3). A magnetic block (6) is fixedly installed inside the receiving seat (4). A sleeve shell (5) is threaded on the outer side of the lower end of the receiving seat (4). A base (7) is fixedly installed at the bottom of the workbench (1). An elastic mechanism is fixedly installed on the upper surface of the base (7). A floating frame (8) is fixedly connected to the upper end of the elastic mechanism. A placement groove (16) is opened on the upper surface of the floating frame (8).

2. The bearing press-fitting equipment according to claim 1, characterized in that, The elastic mechanism includes a fixed box (9), inside which a damping spring (11) is fixedly installed. A guide block (10) is fixedly installed on the upper end of the damping spring (11). The upper end of the guide block (10) extends above the fixed box (9) and is fixedly connected to the lower surface of the floating frame (8).

3. The bearing press-fitting equipment according to claim 1, characterized in that, A sleeve block (12) is rotatably connected to one side of the workbench (1), and a support rod (13) is fixedly connected to one side of the sleeve block (12). A fan (15) is rotatably connected to the end of the support rod (13) through a connecting shaft seat (14).

4. The bearing press-fitting equipment according to claim 3, characterized in that, The central axis of the sleeve block (12) is set vertically, and the length direction of the support rod (13) is set horizontally.

5. The bearing press-fitting equipment according to claim 1, characterized in that, The central axes of the floating frame (8), the electric telescopic rod (2), the receiving seat (4), and the sleeve shell (5) coincide.

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