Pressing machine for outer ring of bearing of differential mechanism of front axle
By designing a front axle differential bearing outer ring press and adopting an expansion sleeve and pressure ring structure, the positioning difficulty of the bearing outer ring during the press-fitting process was solved, achieving stable press-fitting of the bearing outer ring and improving press-fitting efficiency and accuracy.
Patent Information
- Application Number
- CN202520145121.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-22
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-01-22
AI Technical Summary
In the existing technology, the outer ring of the front axle differential bearing is prone to falling off during the press-fitting process and cannot be stably fitted onto the press head, resulting in positioning difficulties and affecting press-fitting efficiency and accuracy.
A front axle differential bearing outer ring press was designed, which adopts an expansion sleeve and pressure ring structure. The cylinder drives the pressure head to cooperate with the expansion sleeve to realize the positioning and pressing of the bearing outer ring. Combined with the cavity to limit the differential housing, it ensures uniform force and firm positioning.
This method enables simple and secure positioning of the bearing outer ring, ensuring the stability and accuracy of the press-fitting process, avoiding the problem of detachment, and improving the efficiency and effectiveness of press-fitting.
Smart Images
Figure CN223933043U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of differential assembly technology, specifically a front axle differential bearing outer ring press. Background Technology
[0002] The differential and housing are typically connected by tapered roller bearings. These bearings consist of an inner ring and an outer ring. The inner ring is press-fitted onto the differential using a press, while the outer ring is press-fitted onto the housing, creating a kinematic pair. The outer ring of the tapered roller bearing is connected to the housing using an interference fit to ensure connection stability.
[0003] To ensure the bearing outer ring can be pressed smoothly and accurately into its predetermined position, the conventional method is to fit the outer ring onto a dedicated press head for pressing. Existing standard presses fix the gearbox housing to the worktable and press the outer ring of the tapered bearing downwards using the press head. However, in actual operation, because the tapered bore of the outer ring is smaller at the bottom and larger at the top, there is a problem where the outer ring cannot be fitted onto the press head, may fall off, and cannot be positioned correctly.
[0004] Therefore, it is necessary to propose a front axle differential bearing outer ring press to solve the above problems. Utility Model Content
[0005] (a) Technical problems to be solved
[0006] The purpose of this invention is to provide a front axle differential bearing outer ring press to solve the problems mentioned in the background art.
[0007] (II) Technical Solution
[0008] To achieve the above objectives, this utility model provides the following technical solution: a front axle differential bearing outer ring press, comprising a worktable, a cavity for limiting the differential housing on the worktable, a pressure head driven by a cylinder to lift and lower above the cavity, the pressure head comprising a fixed seat, an expansion sleeve fixedly connected to the bottom end of the fixed seat, a cone block driven by a telescopic rod to lift and lower inside the expansion sleeve for controlling the expansion and contraction of the expansion sleeve, and a pressure ring fixedly connected to the fixed seat on the outer side of the expansion sleeve.
[0009] Preferably, a pressure sensor is provided between the piston rod of the cylinder and the pressure head.
[0010] Preferably, the diameter of the pressure ring is adapted to the diameter of the outer ring of the bearing.
[0011] Preferably, the expansion sleeve has a tapered bevel that matches the outer ring of the bearing.
[0012] Preferably, both the pressure ring and the expansion sleeve are fixedly connected to the fixed base by screws.
[0013] Preferably, a protective net is fixedly connected to the workbench, and an operation window is provided on one side of the protective net, with safety light curtains arranged on both sides of the operation window.
[0014] Preferably, the workbench is equipped with a controller, and the cylinder, pressure sensor, safety light curtain and telescopic rod are all connected to the controller.
[0015] (III) Beneficial Effects
[0016] Compared with the prior art, this utility model provides a front axle differential bearing outer ring press, which has the following advantages:
[0017] 1. This front axle differential bearing outer ring press uses an expansion sleeve to position the bearing outer ring, making the positioning of the bearing outer ring simpler and more secure, thus facilitating the press-fitting operation.
[0018] 2. The front axle differential bearing outer ring press uses a cavity that matches the differential housing to limit its positioning, making it easier to position and more evenly stressed. Attached Figure Description
[0019] Figure 1 This is a three-dimensional schematic diagram of the structure of this utility model;
[0020] Figure 2 This is a three-dimensional schematic diagram of the pressure head of this utility model;
[0021] Figure 3 This is a cross-sectional schematic diagram of the pressure head of this utility model.
[0022] In the diagram: 1. Cylinder; 2. Controller; 3. Pressure sensor; 4. Pressure head; 5. Protective net; 6. Safety light curtain; 7. Worktable; 8. Cavity; 9. Pressure ring; 10. Expansion sleeve; 11. Conical block; 12. Fixed seat; 13. Telescopic rod. Detailed Implementation
[0023] 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.
[0024] Please see Figure 1-3As shown, a front axle differential bearing outer ring press includes a worktable 7 with a cavity 8 for limiting the differential housing. Above the cavity 8, a press head 4 is driven to rise and fall by a cylinder 1. The press head 4 includes a fixed base 12, with an expansion sleeve 10 fixedly connected to the bottom end of the fixed base 12. Inside the expansion sleeve 10, a cone block 11 is driven to rise and fall by a telescopic rod 13 to control the expansion and contraction of the expansion sleeve 10. A pressure ring 9, fixedly connected to the fixed base 12, is fitted onto the outer side of the expansion sleeve 10. Specifically, the diameter of the pressure ring 9 is adapted to the diameter of the bearing outer ring, and a gap is provided between the expansion sleeve 10 and the pressure ring 9.
[0025] During the press-fitting of the bearing outer ring, the reducer housing is placed inside the cavity 8, and then the outer ring of the bearing to be press-fitted is fitted onto the outside of the expansion sleeve 10, so that its upper end face is in contact with the lower end face of the pressure ring 9. The tapered block 11 is pushed down by the telescopic rod 13, and the tapered block 11 acts on the inner wall of the expansion sleeve 10 to expand it, thereby limiting and fixing the bearing outer ring. Then, the press head 4 is driven down by the cylinder 1 to press the bearing outer ring into the corresponding installation position inside the reducer housing. After the installation is completed, the tapered block 11 is driven up by the telescopic rod 13, and the expansion sleeve 10 contracts back to its original position. Then, the press head 4 is driven away from the reducer housing by the cylinder 1.
[0026] To ensure safe operation, a pressure sensor 3 is installed between the piston rod of cylinder 1 and the pressure head 4. The pressure sensor 3 detects the pressure applied by cylinder 1 during the pressing process, preventing the pressure from exceeding the threshold and causing damage to the workpiece or equipment.
[0027] To improve the positioning effect of the expansion sleeve 10 on the bearing outer ring, the expansion sleeve 10 has a tapered inclined surface adapted to the bearing outer ring. Preferably, the pressure ring 9 and the expansion sleeve 10 are arranged concentrically.
[0028] Specifically, both the pressure ring 9 and the expansion sleeve 10 are fixedly connected to the fixed base 12 by screws. Screws are used to allow for the disassembly and replacement of the pressure ring 9 and the expansion sleeve 10, making them suitable for press-fitting bearing outer rings of different sizes and specifications. Preferably, the upper end face of the pressure ring 9 abuts against the end face of the fixed base 12 to facilitate pressure transmission.
[0029] To prevent accidents, a protective net 5 is fixedly connected to the workbench 7. An operating window is located on one side of the protective net 5, and safety light curtains 6 are installed on opposite sides of the operating window. Specifically, the workbench 7 is equipped with a controller 2, and the cylinder 1, pressure sensor 3, safety light curtains 6, and telescopic rod 13 are all connected to the controller 2. By setting up the safety light curtain 6, when a part of the operator's body accidentally enters the pressing area, it will block the safety light curtain 6. When the safety light curtain 6 detects that the light curtain is blocked, the controller 2 controls the cylinder 1 to stop operating immediately to prevent injury.
[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A front axle differential bearing outer ring press, comprising a worktable (7), characterized in that: The workbench (7) is provided with a cavity (8) for limiting the differential housing. Above the cavity (8) is a pressure head (4) driven to rise and fall by a cylinder (1). The pressure head (4) includes a fixed seat (12). The bottom end of the fixed seat (12) is fixedly connected to an expansion sleeve (10). Inside the expansion sleeve (10) is a cone block (11) driven to rise and fall by a telescopic rod (13) to control the expansion and contraction of the expansion sleeve (10). The outer side of the expansion sleeve (10) is fitted with a pressure ring (9) fixedly connected to the fixed seat (12).
2. The front axle differential bearing outer ring press according to claim 1, characterized in that: A pressure sensor (3) is provided between the piston rod of the cylinder (1) and the pressure head (4).
3. A front axle differential bearing outer ring press according to claim 1, characterized in that: The diameter of the pressure ring (9) is matched with the diameter of the outer ring of the bearing.
4. A front axle differential bearing outer ring press according to claim 1, characterized in that: The expansion sleeve (10) has a tapered slope that is adapted to the outer ring of the bearing.
5. A front axle differential bearing outer ring press according to claim 1, characterized in that: The pressure ring (9) and the expansion sleeve (10) are both fixedly connected to the fixed seat (12) by screws.
6. A front axle differential bearing outer ring press according to claim 2, characterized in that: A protective net (5) is fixedly connected to the workbench (7). An operation window is provided on one side of the protective net (5), and safety light curtains (6) are arranged on both sides of the operation window.
7. A front axle differential bearing outer ring press according to claim 6, characterized in that: The workbench (7) is equipped with a controller (2), and the cylinder (1), pressure sensor (3), safety light curtain (6) and telescopic rod (13) are all connected to the controller (2).