A high-precision automatic assembly device for inner and outer rings of bearings

Abstract

This utility model relates to the field of automatic bearing assembly, and discloses a high-precision automatic assembly device for inner and outer rings of bearings. It includes a worktable, a hopper at the bottom of the worktable, a material handling assembly inside the hopper, a fixed rod fixedly connected to the top of the worktable, an electric push rod fixedly connected to the top of the fixed rod, a pressing rod slidably connected to the inner wall of the electric push rod, a gripper on the outer wall of the pressing rod, and an adjustment assembly on the outer wall of the gripper. The material handling assembly includes a feeding tray. In this utility model, when a part reaches the edge of the material distribution turntable, it is carried away from the conveyor belt area as the turntable rotates. Through the uniform rotation and indexing positioning structure of the rotary material distribution turntable, the bearings enter the unloading process one by one in an orderly manner, achieving independent, non-stacking conveying of bearings. This solves the problem of easy congestion and jamming of bearings in traditional unloading methods, and improves the continuity and stability of unloading.

Description

Technical Field

[0001] This utility model relates to the field of automatic bearing assembly, and in particular to a high-precision automatic assembly device for the inner and outer rings of a bearing. Background Technology

[0002] In the field of mechanical manufacturing, bearings, as core transmission components, directly determine the operational stability and service life of mechanical equipment through their assembly precision. With the rapid development of high-end equipment industries such as aerospace, precision machine tools, and new energy vehicles, the market demand for high-precision bearings is surging. Against this backdrop, an automated assembly device for the inner and outer rings of high-precision bearings has emerged. This device integrates mechanical transmission, automatic control, and precision testing technologies to achieve fully automated assembly of the bearing's inner and outer rings, steel balls, and cage, becoming a key piece of equipment for improving bearing manufacturing precision and production efficiency.

[0003] In existing high-precision bearing assembly devices, the unloading process often employs a chain conveyor mechanism. This mechanism uses a motor to drive the chain, and the load-bearing blocks on the chain move the bearings. Some devices may include simple baffles or levers along the conveying path to assist in arranging the bearings. The core technical principle is to rely on mechanical transmission or gravitational potential energy to drive material transfer, combined with basic photoelectric sensors to detect the presence of material and ensure the basic triggering of the unloading action.

[0004] In practical applications, existing gravity chute and chain conveyor mechanisms are prone to mutual compression and stacking at chute corners and chain bearing gaps due to the small differences in bearing size and the easy adhesion of grease or dust to their surfaces. When multiple bearings enter the conveying channel simultaneously, congestion and jamming can easily occur due to uneven force or increased friction, requiring frequent manual shutdowns for cleaning. This not only interrupts the continuity of the assembly process but also causes scratches on the bearing surfaces due to manual intervention, seriously affecting the stability and production efficiency of the unloading process. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a high-precision automatic assembly device for the inner and outer rings of bearings, which aims to improve the problem of bearings being easily blocked and jammed during traditional feeding.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a high-precision bearing inner and outer ring automatic assembly device, including a worktable, a hopper at the bottom of the worktable, a material handling component inside the hopper, a fixed rod fixedly connected to the top of the worktable, an electric push rod fixedly connected to the top of the fixed rod, a pressing rod slidably connected to the inner wall of the electric push rod, a gripper on the outer wall of the pressing rod, and an adjustment component on the outer wall of the gripper;

[0007] The material handling assembly includes a feeding disc, which is rotatably connected to the inner wall of the hopper. A fixing column is fixedly connected to the bottom of the feeding disc, and a motor is installed at the bottom of the fixing column. The output end of the motor is fixedly connected to the bottom of the fixing column. A feeding track is fixedly connected to the outer wall of the hopper, and a material distribution assembly is installed on the outer wall of the feeding track.

[0008] As a further description of the above technical solution:

[0009] The material distribution assembly includes a material distribution turntable, the outer wall of which is rotatably connected to the inside of the feeding track. A second fixed column is fixedly connected to the bottom of the material distribution turntable, and a second motor is provided at the bottom of the second fixed column. The output end of the second motor is fixedly connected to the bottom of the second fixed column.

[0010] As a further description of the above technical solution:

[0011] The adjustment assembly includes a sliding block, the outer wall of which is fixedly connected to the outer wall of the gripper.

[0012] As a further description of the above technical solution:

[0013] A spring is provided on the outer wall of the gripper, one end of the spring is fixedly connected to the outer wall of the gripper, and the other end of the spring is fixedly connected to the outer wall of the sliding block.

[0014] As a further description of the above technical solution:

[0015] A second sliding block is fixedly connected to the outer wall of the first sliding block, and a slide rail is slidably connected to the inner wall of the second sliding block. The outer wall of the slide rail is fixedly connected to the outer wall of the fixed rod.

[0016] As a further description of the above technical solution:

[0017] The inner wall of the sliding block is threaded with a bidirectional lead screw, one end of which is fixedly connected to a limit block, and the outer wall of the limit block is fixedly connected to the outer wall of the fixed rod.

[0018] As a further description of the above technical solution:

[0019] The outer wall of the bidirectional lead screw is equipped with a motor three, and the output end of the motor three is fixedly connected to the inner wall of the bidirectional lead screw.

[0020] As a further description of the above technical solution:

[0021] The bottom of the motor is fixedly connected to a fixing plate, and the outer wall of the fixing plate is fixedly connected to the outer wall of the fixing rod.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the rotation of the fixed column one drives the feeding disc to rotate. After the parts are conveyed into the inside of the feeding track, the drive motor two drives the fixed column two to rotate. The rotation of the fixed column two drives the distribution turntable to rotate. When the parts reach the edge of the distribution turntable, they will be carried away from the conveyor belt area with the rotation of the turntable. Through the uniform rotation and indexing positioning structure of the rotary distribution turntable, the bearings enter the feeding process one by one in an orderly manner, achieving the effect of independent and non-stacked conveying of bearings. This solves the problem of easy congestion and jamming of bearings in traditional feeding and improves the continuity and stability of feeding.

[0024] 2. In this utility model, a drive motor drives a bidirectional lead screw to rotate. When the bidirectional lead screw rotates clockwise, the sliding blocks at both ends move in opposite directions, causing the gripper to move. When the bidirectional lead screw rotates counterclockwise, the sliding blocks at both ends cause the gripper to move in the opposite direction, thereby achieving the clamping action of bearings of different sizes. This achieves the effects of not needing to frequently change the fixture, accurately positioning bearings of different sizes, flexibly adjusting the clamping force, and quickly adjusting the fixture to adapt to bearings of different sizes. It solves the problems of poor versatility and time-consuming replacement and adjustment of traditional fixtures, and improves the versatility of the fixture and the efficiency of production. Attached Figure Description

[0025] Figure 1 A perspective view of a high-precision automatic assembly device for bearing inner and outer rings proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the feeding tray of a high-precision bearing inner and outer ring automatic assembly device proposed in this utility model;

[0027] Figure 3 A schematic diagram of a motor for a high-precision bearing inner and outer ring automatic assembly device proposed in this utility model;

[0028] Figure 4 This is a schematic diagram of a bidirectional lead screw for a high-precision bearing inner and outer ring automatic assembly device proposed in this utility model;

[0029] Figure 5 for Figure 1 Enlarged view of point A in the middle.

[0030] Legend:

[0031] 1. Workbench; 2. Fixed rod; 3. Pressing rod; 4. Gripper; 5. Hopper; 6. Feeding tray; 7. Feeding track; 8. Fixed column one; 9. Motor one; 10. Distributing turntable; 11. Fixed column two; 12. Motor two; 13. Sliding block one; 14. Electric push rod; 15. Two-way lead screw; 16. Slide rail; 17. Sliding block two; 18. Spring; 19. Motor three; 20. Fixed plate; 21. Limit block. Detailed Implementation

[0032] 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.

[0033] Reference Figures 2-4 This utility model provides an embodiment of a high-precision bearing inner and outer ring automatic assembly device, including a worktable 1. The worktable 1 is used to support the various components of the device and provide a stable operating plane to ensure accurate positioning of each component during assembly. A hopper 5 is provided at the bottom of the worktable 1 to store the assembled bearings. A material sorting component is provided inside the hopper 5 to organize the messy bearing parts in the hopper 5 into a uniform orientation and transport them in an orderly manner, thereby improving the uniformity of the material supply. A fixing rod 2 is fixedly connected to the top of the worktable 1 to support the electric push rod 14, thereby ensuring the stability of the press-fitting structure. An electric push rod 14 is fixedly connected to the bearing assembly. The electric push rod 14 provides linear driving force to move the pressing rod 3 up and down, thereby achieving the bearing pressing action. The pressing rod 3 is slidably connected to the inner wall of the electric push rod 14. The pressing rod 3 acts directly on the bearing component to press it precisely into the assembly position, ensuring assembly accuracy. The outer wall of the pressing rod 3 is provided with a gripper 4, which is used to grip and fix the bearing component to prevent workpiece displacement during pressing, thereby improving assembly stability. The outer wall of the gripper 4 is provided with an adjustment component, which is used to adjust the opening and closing degree of the gripper 4 to adapt to bearing components of different specifications, thereby enhancing the versatility of the device.

[0034] The material handling assembly includes a feeding tray 6, which supports the bearing components inside the hopper 5 and drives the material to move by rotation, achieving the effect of preliminary material handling. The feeding tray 6 is rotatably connected to the inner wall of the hopper 5. The feeding tray 6 has a built-in tilt angle, with its tray surface tilted at 5°-15° from the edge to the center. After assembly, the bearings fall through the inside of the workbench 1 to the edge, which is slightly higher than the center area. This tilting structure is used to guide the bearing components inside the hopper 5 to move towards the edge of the feeding tray 6 by gravity, avoiding material accumulation in the center area and achieving the effect of improving material dispersion efficiency. A fixed column 8 is fixedly connected to the bottom of the feeding tray 6. The fixed column 8 is used to connect the feeding tray 6 and the output end of the motor 9 to transmit rotational power and ensure stable power transmission. The motor 9 is set at the bottom of the fixed column 8, and the output end of the motor 9 is fixedly connected to the bottom of the fixed column 8. A feeding track 7 is fixedly connected to the outer wall of the hopper 5. The feeding track 7 is used to transport the bearing parts sorted by the feeding tray 6 to the assembly station to achieve the effect of connecting material sorting and assembly. A material distribution component is set on the outer wall of the feeding track 7. The material distribution component is used to separate the bearing parts on the feeding track 7 one by one and accurately send them to the gripper 4 to grasp, so as to avoid material accumulation. The material distribution assembly includes a material distribution turntable 10, which receives the bearing components conveyed by the feeding track 7 and distributes the materials one by one through rotation, achieving a precise feeding effect. The outer wall of the material distribution turntable 10 is rotatably connected to the inside of the feeding track 7. The material distribution turntable 10 rotates intermittently in coordination with the feeding track 7 to achieve the effect of orderly separation of materials. A fixed column 11 is fixedly connected to the bottom of the material distribution turntable 10. The fixed column 11 is used to connect the material distribution turntable 10 and the motor 12 to transmit rotational power and ensure stable material distribution. The motor 12 is installed at the bottom of the fixed column 11. The motor 12 is used to provide intermittent rotational power to drive the material distribution turntable 10 to rotate at a set rhythm, thereby controlling the material distribution speed. The output end of the motor 12 is fixedly connected to the bottom of the fixed column 11.

[0035] Reference Figure 1 and Figure 5The adjustment component includes a sliding block 13, whose inner wall provides a mounting base for the gripper 4 and transmits driving force, thus connecting the gripper 4 to the transmission component. The outer wall of the sliding block 13 is fixedly connected to the outer wall of the gripper 4. A spring 18 is provided on the outer wall of the gripper 4, and the spring 18 is spirally wrapped around the connection between the gripper 4 and the sliding block 13 to buffer the clamping force of the gripper 4 and avoid damaging the bearing surface. One end of the spring 18 is fixedly connected to the outer wall of the gripper 4, and the other end is fixedly connected to the outer wall of the sliding block 13. The spring 18 cooperates with the gripper 4 to extend and retract, achieving the effect of adaptively adjusting the clamping tightness according to the bearing size. A sliding block 2 17 is fixedly connected to the outer wall of the sliding block 13 to enhance the movement stability of the sliding block 13. A slide rail 16 is slidably connected to the inner wall of the sliding block 2 17 to limit the movement trajectory of the sliding block 2 17, ensuring the precise translation of the gripper 4. The outer wall of the slide rail 16 is fixedly connected to the outer wall of the fixed rod 2. A bidirectional lead screw 15 is threadedly connected to the inner wall of the sliding block 13. The surface of the bidirectional lead screw 15 has symmetrical and opposite threads, which are used to drive the two sliding blocks 13 on both sides to move closer or further apart synchronously by rotation, so as to adjust the distance between the grippers 4. One end of the bidirectional lead screw 15 is fixedly connected to a limit block 21. The limit block 21 is block-shaped and its diameter is larger than that of the bidirectional lead screw 15. It is used to limit the axial displacement of the bidirectional lead screw 15 to prevent the lead screw from falling off. The outer wall of the limit block 21 is fixedly connected to the outer wall of the fixed rod 2. A motor 3 19 is set on the outer wall of the bidirectional lead screw 15. The motor 3 19 is a servo motor, which is used to provide stable rotational power to achieve precise control of the speed of the bidirectional lead screw 15. The output end of the motor 3 19 is fixedly connected to the inner wall of the bidirectional lead screw 15. A fixing plate 20 is fixedly connected to the bottom of the motor 3 19. The fixing plate 20 is used to securely install the motor 3 19 on the fixed rod 2 to reduce the impact of motor vibration. The outer wall of the fixing plate 20 is fixedly connected to the outer wall of the fixed rod 2.

[0036] Working principle: When the hopper 5 is used for feeding, the drive motor 9 first drives the fixed column 8 to rotate. The rotation of the fixed column 8 drives the feeding disc 6 to rotate. Since the feeding disc 6 has an inclined angle, the material can generate a component force along the inclined direction by its own gravity. This makes it easier for the material to move along the spiral track into the feeding track 7. After the material is delivered into the feeding track 7, the drive motor 12 drives the fixed column 11 to rotate. The rotation of the fixed column 11 drives the distribution turntable 10 to rotate. When the material reaches the edge of the distribution turntable 10, it will be carried away from the conveyor belt area as the turntable rotates.

[0037] When clamping bearings of different sizes, the clamping jaws 4 need to be adjusted. First, the drive motor 19 drives the bidirectional lead screw 15 to rotate. When the bidirectional lead screw 15 rotates clockwise, the sliding blocks 13 at both ends will move in opposite directions, causing the clamping jaws 4 to move. When the bidirectional lead screw 15 rotates counterclockwise, the sliding blocks 13 at both ends will drive the clamping jaws 4 to move in the opposite direction, thereby achieving the clamping action of bearings of different sizes. After clamping the bearing, the drive electric push rod 14 drives the pressing rod 3 to press down. When the pressing rod 3 slides to the outer wall of the clamping jaws 4, it drives the clamping jaws 4 to squeeze the spring 18. After the assembly is completed, the pressing rod 3 slides upward, and then the spring 18 rebounds, causing the clamping jaws 4 to reset.

Claims

1. A high-precision bearing inner and outer ring automatic assembly device, comprising a workbench (1), characterized in that: The workbench (1) is provided with a hopper (5) at the bottom, and a material handling component is provided inside the hopper (5). A fixed rod (2) is fixedly connected to the top of the workbench (1), and an electric push rod (14) is fixedly connected to the top of the fixed rod (2). A pressing rod (3) is slidably connected to the inner wall of the electric push rod (14), and a clamp (4) is provided on the outer wall of the pressing rod (3). An adjustment component is provided on the outer wall of the clamp (4). The material handling assembly includes a feeding tray (6), which is rotatably connected to the inner wall of the hopper (5). A fixing column (8) is fixedly connected to the bottom of the feeding tray (6). A motor (9) is provided at the bottom of the fixing column (8). The output end of the motor (9) is fixedly connected to the bottom of the fixing column (8). A feeding track (7) is fixedly connected to the outer wall of the hopper (5). A material distribution assembly is provided on the outer wall of the feeding track (7).

2. The automatic assembling device for inner and outer rings of high-precision bearing according to claim 1, characterized in that: The material distribution assembly includes a material distribution turntable (10), the outer wall of which is rotatably connected to the inside of the feeding track (7), and a fixed column two (11) is fixedly connected to the bottom of the material distribution turntable (10). A motor two (12) is provided at the bottom of the fixed column two (11), and the output end of the motor two (12) is fixedly connected to the bottom of the fixed column two (11).

3. The automatic assembling device for inner and outer rings of high-precision bearing according to claim 1, characterized in that: The adjustment assembly includes a sliding block (13), the outer wall of which is fixedly connected to the outer wall of the gripper (4).

4. The automatic assembling device for inner and outer rings of high-precision bearing according to claim 3, characterized in that: A spring (18) is provided on the outer wall of the gripper (4). One end of the spring (18) is fixedly connected to the outer wall of the gripper (4), and the other end of the spring (18) is fixedly connected to the outer wall of the sliding block (13).

5. The automatic assembling device for inner and outer rings of high-precision bearing according to claim 4, characterized in that: The outer wall of the first sliding block (13) is fixedly connected to the second sliding block (17), and the inner wall of the second sliding block (17) is slidably connected to the slide rail (16). The outer wall of the slide rail (16) is fixedly connected to the outer wall of the fixed rod (2).

6. The automatic assembling device for inner and outer rings of high-precision bearing according to claim 5, characterized in that: The inner wall of the sliding block (13) is threaded with a bidirectional screw (15), one end of which is fixedly connected to a limit block (21), and the outer wall of the limit block (21) is fixedly connected to the outer wall of the fixed rod (2).

7. The automatic assembling device for inner and outer rings of high-precision bearing according to claim 6, characterized in that: The outer wall of the bidirectional lead screw (15) is provided with a motor three (19), and the output end of the motor three (19) is fixedly connected to the inner wall of the bidirectional lead screw (15).

8. The automatic assembling device for inner and outer rings of high-precision bearing according to claim 7, characterized in that: The bottom of the motor (19) is fixedly connected to a fixing plate (20), and the outer wall of the fixing plate (20) is fixedly connected to the outer wall of the fixing rod (2).

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