Lightweight high-strength bearing seat drilling clamp

Abstract

The utility model relates to mechanical processing frock clamp technical field discloses a kind of light weight high-strength bearing seat drilling fixture, including base, hollow frame is opened in the base interior, the base inner wall is fixedly connected with multiple reinforcing bars, the base bottom is opened with multiple honeycomb holes, the upper surface of base is provided with limiting assembly;The limiting assembly includes extruding block, the extruding block is slidably connected on the upper surface of base, the upper surface of base is fixedly connected with L type stand, the inside of extruding block is opened with sliding slot, the upper surface of extruding block is rotatably connected with threaded rod two, the outer wall of threaded rod two is threadedly connected with nut, the outer wall of threaded rod two is equipped with spring, the one end of spring is fixedly connected on the upper surface of extruding block.In the utility model, the hollow frame in the base interior, reinforcing bar and the honeycomb hole of bottom realize light weight design, greatly reduce the self weight of clamp under the premise of guaranteeing overall rigidity and torsional stiffness.

Description

Technical Field

[0001] This utility model relates to the field of machining tooling fixtures, and in particular to a lightweight, high-strength bearing housing drilling fixture. Background Technology

[0002] In the field of machining, bearing housings, as key components, are commonly used to support rotating parts and ensure the stability of equipment operation. To improve the machining accuracy of bearing housings, drilling is usually required on their surface. During the drilling process, fixtures play a crucial role in positioning and fixing, and their structural design directly affects machining accuracy and production efficiency. However, with the continuous improvement of equipment machining accuracy and assembly efficiency requirements, traditional drilling fixtures have gradually revealed their shortcomings in use.

[0003] Most existing drilling jigs adopt a one-piece metal structure, relying on a rigid frame and locating pins to fix the bearing housing, ensuring that it does not shift or deviate during drilling. Some devices provide clamping force through bolt tightening or pressure plate clamping to improve the stability of the machining process. These jigs can achieve a certain degree of positioning and fixing effect in practical applications, are suitable for drilling bearing housings of standard specifications, and have been widely used in the machinery manufacturing industry.

[0004] However, traditional drilling jigs generally employ a heavy, integral metal structure, resulting in significant weight. This places a considerable physical burden on operators during installation and disassembly, increasing workload and reducing production efficiency. Furthermore, due to the limited adaptability of most jig designs, they often cannot be flexibly adjusted when encountering bearing housings of different specifications, leading to insufficient versatility and poor processing adaptability. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a lightweight, high-strength bearing housing drilling fixture, which aims to improve the existing structure. Traditional fixtures are usually heavy, which leads to a large physical burden on operators during installation and makes it difficult to adapt to bearing housings of different specifications.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a lightweight high-strength bearing seat drilling fixture, including a base, a hollow frame inside the base, multiple reinforcing ribs fixedly connected to the inner wall of the base, multiple honeycomb holes at the bottom of the base, and a limit component on the upper surface of the base. The limiting component includes an extrusion block, which is slidably connected to the upper surface of the base. An L-shaped support is fixedly connected to the upper surface of the base. A groove is provided inside the extrusion block. A threaded rod is rotatably connected to the upper surface of the extrusion block. A nut is threadedly connected to the outer wall of the threaded rod. A spring is sleeved on the outer wall of the threaded rod. One end of the spring is fixedly connected to the upper surface of the extrusion block, and the other end of the spring is fixedly connected to the lower surface of the L-shaped support. The lower surface of the L-shaped support is in contact with the upper surface bearing seat body. The upper surface of the extrusion block is in contact with the lower surface of the bearing seat body. The inner wall of the L-shaped support is rotatably connected to the outer wall of the extrusion block.

[0007] The above technical solution achieves a significant reduction in fixture weight while maintaining high strength and structural rigidity, facilitating handling and installation. Simultaneously, through the cooperation of limit components, threaded rods, and springs, it enables rapid, precise positioning and stable clamping of bearing housings of different sizes, improving clamping efficiency and ease of operation, and ensuring workpiece stability and machining accuracy during processing.

[0008] Preferably, a connecting plate is fixedly connected to the outer wall of the base, and a fixing block is fixedly connected to the outer wall of the connecting plate.

[0009] The above technical solution is provided; the connecting plate and its fixing block on the outer wall of the base provide reliable installation support for the threaded rod and the extrusion plate, so that the multi-point extrusion force can be evenly applied to the bearing seat body, improving the overall rigidity and stability of the fixture, while ensuring the positioning accuracy and clamping reliability of the workpiece during the processing.

[0010] Preferably, the inner wall of the fixing block is threaded with a threaded rod, and one end of the threaded rod is rotatably connected to a pressing plate.

[0011] The above technical solution enables operators to adjust the position and clamping force of the extrusion plate by rotating the threaded rod, thereby achieving multi-point uniform clamping of the bearing housing body.

[0012] Preferably, the inner wall of the extrusion plate is rotatably connected to three rotating shafts, and the outer walls of the three rotating shafts are all fixedly connected to connecting plates.

[0013] The above technical solution achieves multi-point extrusion distribution, ensuring that the clamping force is applied evenly to the bearing housing body, improving the positioning accuracy and clamping stability of the workpiece, and effectively reducing the risk of vibration and displacement during processing.

[0014] Preferably, the inner wall of the connecting plate is rotatably connected to two rotating shafts, and the outer walls of the two rotating shafts are fixedly connected to connecting blocks.

[0015] The above technical solution achieves flexible transmission with multi-point clamping, improves the uniform distribution of clamping force, enhances the positioning accuracy and stability of the bearing housing body, and effectively reduces vibration and workpiece offset during processing.

[0016] Preferably, the connecting block is fixedly connected to both ends with extrusion columns, and the outer wall of the extrusion columns is attached to the outer wall of the bearing seat body.

[0017] The above technical solution achieves multi-point force distribution, improves the positioning accuracy and clamping stability of the bearing housing body, and effectively reduces vibration and offset during processing to ensure drilling quality.

[0018] Preferably, a base plate is fixedly connected to the upper surface of the base, and the upper surface of the base plate is attached to the lower surface of the bearing seat body.

[0019] The above technical solution improves the overall rigidity of the fixture, ensures the positioning accuracy and machining stability of the bearing housing body, and effectively reduces the risk of machining vibration and offset.

[0020] Preferably, the outer wall of the base plate is in contact with the extrusion block, and the lower surface of the L-shaped support is slidably connected to the outer wall of the bearing seat body.

[0021] The above technical solution provides a more uniform distribution of clamping force, improves the stability and positioning accuracy of the bearing housing, and effectively reduces vibration and offset during processing, ensuring drilling quality.

[0022] This utility model has the following beneficial effects: 1. In this utility model, a lightweight design is achieved through the hollow frame inside the base, reinforcing ribs, and honeycomb holes at the bottom. This significantly reduces the weight of the clamp while ensuring overall rigidity and torsional resistance, making it easier to handle and install on-site. At the same time, the bearing seat body can be precisely positioned vertically and radially through the limiting component, and different sizes of bearing seats can be quickly adapted by adjusting the screw. This structure solves the problems of traditional clamps being heavy, inconvenient to handle, and difficult to adapt to multiple specifications of bearing seats, reducing the physical exertion of operators and improving clamping efficiency.

[0023] 2. In this utility model, the multi-point extrusion structure allows multiple force points to act simultaneously on the outer wall of the bearing housing body, achieving a uniform distribution of clamping force. The extrusion column can be flexibly adjusted around the rotating shaft to fit the workpiece surface, ensuring that the clamping force has sufficient rigidity to resist drilling reaction force. This structure effectively reduces local deformation and stress concentration caused by single-point clamping, improves positioning accuracy and reliability of repeated clamping, and significantly reduces the risk of vibration and hole position displacement during drilling, thereby ensuring processing quality and workpiece stability. Attached Figure Description

[0024] Figure 1This is a three-dimensional structural diagram of a lightweight, high-strength bearing housing drilling fixture proposed in this utility model. Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 This is a schematic diagram of the base structure of a lightweight, high-strength bearing housing drilling fixture proposed in this utility model. Figure 4 This is a schematic diagram of the extrusion plate portion of a lightweight, high-strength bearing seat drilling fixture proposed in this utility model. Figure 5 This is a schematic diagram of the extrusion column structure of a lightweight, high-strength bearing seat drilling fixture proposed in this utility model.

[0025] Legend: 1. Base; 2. Hollow frame; 3. Reinforcing rib; 4. Connecting plate one; 5. Threaded rod one; 6. Fixing block; 7. Extrusion plate; 8. Bearing seat body; 9. Base plate; 10. L-shaped upright; 11. Threaded rod two; 12. Nut; 13. Extrusion block; 14. Slide groove; 15. Spring; 16. Honeycomb hole; 17. Connecting plate two; 18. Rotating shaft one; 19. Extrusion column; 20. Connecting block; 21. Rotating shaft two. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1 - Appendix Figure 5 This application will be described in further detail below.

[0027] Reference Figure 1 - Figure 5 The present invention provides an embodiment of a lightweight high-strength bearing seat drilling fixture, comprising a base 1, which is made of aluminum alloy and serves as the overall load-bearing foundation of the fixture, supporting all components and ensuring the stability of the fixture during processing. A hollow frame 2 is provided inside the base 1, and multiple reinforcing ribs 3 are fixedly connected to the inner wall of the base 1. The reinforcing ribs 3 are used to enhance the local rigidity of the base 1, disperse the processing force and clamping force, and improve the overall load-bearing capacity of the fixture. Multiple honeycomb holes 16 are provided at the bottom of the base 1 to reduce its own weight while maintaining structural strength, providing a lightweight design for the base 1. Limiting components are provided on the upper surface of the base 1. The limiting component includes a pressing block 13, which, together with the L-shaped support 10, forms a clamping surface for the bearing seat body 8. It also bears the buffering force generated by the spring 15, achieving a stable yet flexible clamping. The pressing block 13 is slidably connected to the upper surface of the base 1, and the L-shaped support 10 is fixedly connected to the upper surface of the base 1. A groove 14 is provided inside the pressing block 13. The groove 14 cooperates with the L-shaped support 10 to slide horizontally when adjusting the bearing seat size, achieving horizontal adjustment and ensuring positioning accuracy. A threaded rod 11 is rotatably connected to the upper surface of the pressing block 13. A nut 12 is threadedly connected to the outer wall of the threaded rod 11. The nut 12 and the threaded rod 11 are threadedly engaged, enabling axial movement of the screw. The conversion of the clamping force is controlled, and the clamping position is fixed after clamping. A spring 15 is sleeved on the outer wall of the threaded rod 11. One end of the spring 15 is fixedly connected to the upper surface of the extrusion block 13, and the other end of the spring 15 is fixedly connected to the lower surface of the L-shaped stand 10. The spring 15 is compressed during the clamping process to provide energy storage and buffering, ensuring uniform clamping force and absorbing processing vibration. The lower surface of the L-shaped stand 10 is in contact with the upper surface bearing seat body 8, and the upper surface of the extrusion block 13 is in contact with the lower surface of the bearing seat body 8. The bearing seat body 8 is the workpiece to be processed and is the target object for the fixture positioning and clamping. The inner wall of the L-shaped stand 10 is rotatably connected to the outer wall of the extrusion block 13.

[0028] Specifically, the base 1 achieves a lightweight design through an internal hollow frame 2, multiple reinforcing ribs 3, and a bottom honeycomb hole 16, while maintaining overall rigidity and torsional resistance, improving the convenience of handling and installation. The limiting component consists of a pressing block 13, an L-shaped upright 10, a threaded rod 11, a nut 12, and a spring 15, which can achieve vertical and radial positioning of the bearing housing body 8, ensuring clamping stability. The threaded rod 11 can adjust the clamping force, and the spring 15 provides buffering and energy storage, making the force uniform during clamping and absorbing vibration, enabling rapid adaptation to bearing housing bodies 8 of different sizes. The slide groove 14 allows the limiting component to be adjusted in the horizontal direction, improving operational flexibility and positioning accuracy, thereby significantly reducing physical exertion while maintaining high strength and stability, and improving clamping efficiency and processing safety.

[0029] Reference Figure 1 - Figure 5A connecting plate 4 is fixedly connected to the outer wall of the base 1. The connecting plate 4 provides support for the installation of the threaded rod 5 and the fixing block 6. The fixing block 6 is fixedly connected to the outer wall of the connecting plate 4. The threaded rod 5 is threadedly connected to the inner wall of the fixing block 6. The threaded rod 5 is engaged with the fixing block 6 through the thread, which can drive the extrusion plate 7 to move axially, realize the initial clamping of the bearing seat body 8 and the transmission of multi-point extrusion force, and adjust the clamping preload. One end of the threaded rod 5 is rotatably connected to the extrusion plate 7. Three rotating shafts 18 are rotatably connected to the inner wall of the extrusion plate 7. The outer walls of the three rotating shafts 18 are fixedly connected to the connecting plate 17. The rotating shafts 18 allow the connecting plate 17 and the extrusion column 19 to rotate around them during the extrusion process, ensuring multi-point contact with the workpiece surface. Two rotating shafts 21 are rotatably connected to the inner wall of the connecting plate 21. Connecting blocks 20 are fixedly connected to the outer walls of the two rotating shafts 21. Extrusion columns 19 are fixedly connected to both ends of the connecting blocks 20. The extrusion columns 19 achieve self-balancing clamping by evenly distributing clamping force through multiple points, preventing workpiece deformation, improving positioning accuracy and processing stability. The outer wall of the extrusion columns 19 is attached to the outer wall of the bearing seat body 8. A base plate 9 is fixedly connected to the upper surface of the base 1. The base plate 9 is attached to the lower surface of the bearing seat body 8, serving as a support surface to bear the weight of the workpiece and assisting in limiting and stabilizing the clamping. The upper surface of the base plate 9 is attached to the lower surface of the bearing seat body 8, and the outer wall of the base plate 9 is attached to the extrusion block 13. The lower surface of the L-shaped stand 10 is slidably connected to the outer wall of the bearing seat body 8.

[0030] Specifically, during processing, the threaded rod 5 drives the extrusion plate 7 to apply pressure to the bearing housing body 8. The motion is transmitted to multiple extrusion columns 19 through the rotating shaft 18 and the rotating shaft 21, so that they act simultaneously on the surface of the bearing housing body 8. Since the extrusion columns 19 are distributed in different positions, each force point can independently fit the workpiece, realizing multi-point uniform clamping. This multi-point extrusion principle can effectively avoid local deformation and stress concentration caused by single-point force, making the clamping force distribution self-balanced, improving the stability of the workpiece. The multi-point force structure absorbs drilling vibration during processing, reduces the risk of workpiece displacement, and improves positioning accuracy and repeat clamping reliability, thereby ensuring the drilling quality and enhancing processing safety and overall workpiece stability.

[0031] Working principle: When a lightweight and high-strength bearing housing drilling jig is required, a hollow frame 2 is opened inside the base 1, and multiple reinforcing ribs 3 are placed inside the hollow frame 2. Multiple honeycomb holes 16 are opened at the bottom. While ensuring overall rigidity and torsional resistance, the weight is greatly reduced, making it easy to handle and install. To accommodate bearing housing bodies 8 of different specifications and limit their movement, the L-shaped support frame 10 is first pulled to rotate around the rotating shaft inside the extrusion block 13. The bearing housing body 8 is then placed between the L-shaped support frame 10 and the extrusion block 13. The nut 12 is rotated, and the threaded rod 11 undergoes axial displacement under the threaded engagement, thereby clamping the bearing housing body 8 together with the extrusion block 13 and the L-shaped support frame 10. During the clamping process, the spring 15 sleeved on the outer wall of the threaded rod 11 is compressed, serving as an energy storage and buffer. When encountering bearing housing bodies 8 of different sizes, the nut 12 is rotated in the opposite direction, and the L-shaped support frame 10 is pulled to move horizontally within the sliding groove 14 opened inside the extrusion block 13. After adjusting to the appropriate position, the bearing housing body 8 is fixed. This structure makes the clamp lighter while maintaining high strength, and the limiting method can be quickly adapted to bearing housing bodies 8 of different sizes by adjusting the screw, reducing repeated adjustments and physical exertion, and improving clamping efficiency and on-site operation comfort. Furthermore, during processing, the operator rotates the threaded rod 5, causing the extrusion plate 7 to move towards the bearing housing body 8, which in turn drives the rotating shaft 18 and rotating shaft 21 to transmit motion, causing multiple extrusion columns 19 to simultaneously approach the surface of the bearing housing body 8. As the threaded rod 5 continues to rotate, since the extrusion columns 19 are distributed in multiple different positions on the bearing housing body 8, after the extrusion column 19 that first contacts the bearing housing body 8 and comes into contact with it, the other extrusion columns 19 will rotate around the rotating shaft 21 and come into contact with the surface of the bearing housing body 8. After contacting the bearing housing body 8, multiple independent force points will be formed, ensuring that the clamping force is evenly distributed on the outer wall. Compared with traditional single-point clamping, this structure makes the bearing housing more evenly stressed, which not only improves the positioning accuracy and reliability of repeated clamping, but also significantly reduces the risk of vibration and hole position displacement during drilling, thereby ensuring drilling quality.

Claims

1. A lightweight, high-strength bearing housing drilling fixture, comprising a base (1), characterized in that: The base (1) has a hollow frame (2) inside, and multiple reinforcing ribs (3) are fixedly connected to the inner wall of the base (1). Multiple honeycomb holes (16) are opened at the bottom of the base (1). A limit component is provided on the upper surface of the base (1). The limiting component includes a pressing block (13), which is slidably connected to the upper surface of the base (1). An L-shaped support (10) is fixedly connected to the upper surface of the base (1). A sliding groove (14) is provided inside the pressing block (13). A threaded rod (11) is rotatably connected to the upper surface of the pressing block (13). A nut (12) is threadedly connected to the outer wall of the threaded rod (11). A spring (15) is sleeved on the outer wall of the threaded rod (11). One end of the spring (15) is fixedly connected to the upper surface of the pressing block (13), and the other end of the spring (15) is fixedly connected to the lower surface of the L-shaped support (10). The lower surface of the L-shaped support (10) is in contact with the upper surface bearing seat body (8). The upper surface of the pressing block (13) is in contact with the lower surface of the bearing seat body (8). The inner wall of the L-shaped support (10) is rotatably connected to the outer wall of the pressing block (13).

2. The lightweight high-strength bearing housing drilling fixture according to claim 1, characterized in that: The outer wall of the base (1) is fixedly connected to a connecting plate (4), and the outer wall of the connecting plate (4) is fixedly connected to a fixing block (6).

3. The lightweight high-strength bearing housing drilling fixture according to claim 2, characterized in that: The inner wall of the fixed block (6) is threaded with a threaded rod (5), and one end of the threaded rod (5) is rotatably connected to an extrusion plate (7).

4. A lightweight, high-strength bearing housing drilling fixture according to claim 3, characterized in that: The inner wall of the extrusion plate (7) is rotatably connected to three rotating shafts (18), and the outer walls of the three rotating shafts (18) are all fixedly connected to connecting plates (17).

5. A lightweight, high-strength bearing housing drilling fixture according to claim 4, characterized in that: The inner wall of the connecting plate 2 (17) is rotatably connected to two rotating shafts 2 (21), and the outer walls of the two rotating shafts 2 (21) are fixedly connected to connecting blocks (20).

6. A lightweight, high-strength bearing housing drilling fixture according to claim 5, characterized in that: The connecting block (20) is fixedly connected to two ends with extrusion columns (19), and the outer wall of the extrusion column (19) is attached to the outer wall of the bearing seat body (8).

7. A lightweight, high-strength bearing housing drilling fixture according to claim 2, characterized in that: The base (1) has a base plate (9) fixedly connected to its upper surface, and the upper surface of the base plate (9) is attached to the lower surface of the bearing seat body (8).

8. A lightweight, high-strength bearing housing drilling fixture according to claim 7, characterized in that: The outer wall of the base plate (9) is in contact with the extrusion block (13), and the lower surface of the L-shaped stand (10) is slidably connected to the outer wall of the bearing seat body (8).

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