Numerical control gantry beam structure with limiting device

Abstract

This invention proposes a CNC gantry beam structure with a limiting device, comprising a beam body and a slide block. An upper support block and a lower support block are respectively provided on the outer wall of the slide block. Limit plates and buffer columns are horizontally provided on the side ends of the upper and lower support blocks, respectively. The structure includes a limiting box, a buffer cavity, and a moving block. A first guide rod is horizontally provided inside the limiting box, and a first adjusting screw is threaded through the inner side of the moving block. An infrared signal sensor is also installed inside the moving block. The structure also includes a buffer plate and a support plate. A second guide rod is horizontally provided on the inner wall of the buffer cavity. The buffer plate and the support plate are elastically connected by a buffer spring, and a second adjusting screw is threaded through the outer side of the buffer cavity. This invention achieves buffering at the extreme positions of the slide block while also allowing flexible adjustment of the buffering potential energy of the buffer spring according to actual needs, improving the stability and safety of the overall structure.

Description

Technical Field

[0001] This utility model relates to the field of CNC machine tool technology, and in particular to a CNC gantry beam structure with a limit device. Background Technology

[0002] Traditional CNC gantry milling machine beam limit devices typically have a limit function. When the slide reaches its limit position, the limit device suddenly stops the slide from moving further. This rigid limiting method generates significant inertial impact, which can damage machine tool components such as the beam, guide rails, and lead screws, affecting the machine tool's service life and machining accuracy. It may also cause machine tool vibration and noise, reducing machining quality. Furthermore, long-term impact can damage the limit device itself, increasing machine tool maintenance costs and downtime. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the defects of the existing technology. This utility model proposes a CNC gantry beam structure with a limit device.

[0004] To address the aforementioned technical problem that traditional CNC gantry beam limiting devices typically only have a limiting function, and when the slide reaches its limit position, the limiting device abruptly stops the slide from continuing to move, this rigid limiting method generates significant inertial impact. This not only damages machine tool components such as the beam, guide rails, and lead screws, affecting the machine tool's service life and machining accuracy, but may also cause machine tool vibration and noise, reducing machining quality, the technical solution adopted by this utility model is: A CNC gantry beam structure with a limit device includes a beam body and a slide block. An upper support block and a lower support block are respectively provided on the outer side wall of the slide block. A limit plate and a buffer column are respectively horizontally provided on the side ends of the upper support block and the lower support block. It includes a limiting box, a buffer cavity, and a moving block. A first guide rod is horizontally arranged inside the limiting box, and a first adjusting screw is threaded through the inside of the moving block. An infrared signal sensor is also installed inside the moving block. It also includes a buffer plate and a support plate. A second guide rod is horizontally arranged on the inner wall of the buffer cavity. The buffer plate and the support plate are elastically connected by a buffer spring. A second adjusting screw is threaded through the outer side of the buffer cavity.

[0005] Preferably, the slide block moves horizontally in the middle region of the main body of the crossbeam, and two slide rods are securely installed on the inner side of the main body of the crossbeam, with the slide rods horizontally symmetrically distributed with the inner side of the main body of the crossbeam as the reference.

[0006] Preferably, there are two upper support blocks and two lower support blocks, which are vertically and symmetrically distributed with reference to the vertical direction of the outer side wall of the slide block.

[0007] Preferably, the movable block is movably connected to the outer curved surface of the first guide rod, and the movable block is U-shaped and is kept on the same horizontal line as the limiting piece.

[0008] Preferably, the first adjusting screw is rotatably connected to the middle of the limiting box through a rotating shaft, and a nut is threadedly connected to the outer end of the first adjusting screw. The outer end of the limiting box is also provided with a scale line.

[0009] Preferably, the buffer cavity has a buffer hole on the same horizontal line as the buffer column, and the buffer plate and the support plate are respectively attached to and movably connected to the outer curved surfaces on both sides of the second guide rod.

[0010] Preferably, the inner side of the second adjusting screw is rotatably connected to the outer side of the support plate via a rotating shaft, and the outer end of the second adjusting screw is also threaded with a nut.

[0011] Compared with the prior art, the beneficial effects of this utility model are: When the limiting plate moves to the middle of the moving block, this invention cuts off the infrared limiting signal of the infrared signal sensor, triggering the limiting control mechanism to ensure that the slide moves within a preset range. Simultaneously, the position of the moving block can be adjusted by rotating the first adjusting screw, thereby changing the position of the limiting signal of the infrared signal sensor and achieving flexible adjustment of the slide's limiting control. This invention also features a buffer plate that, under the action of a buffer spring, limits and buffers the buffer column when it moves horizontally and inserts into the buffer cavity, effectively reducing the impact force when the slide reaches its extreme position. Furthermore, the second adjusting screw can be rotated to move the support plate linearly back and forth, thereby adjusting the compression or release of the buffer spring and changing its elastic potential energy. In this way, while achieving buffering at the extreme position of the slide, the buffer potential energy of the buffer spring can be flexibly adjusted according to actual needs, improving the stability and safety of the overall structure. Attached Figure Description

[0012] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein: Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0013] Figure 2 This is a schematic diagram of the structure of the limiting box and buffer cavity of this utility model.

[0014] Figure 3 This is a cross-sectional view of the buffer cavity of this utility model.

[0015] Reference numerals in the attached drawings: 1. Main body of the crossbeam; 2. Slide seat; 3. Slide rod; 4. Upper support block; 5. Lower support block; 6. Limiting plate; 7. Buffer column; 8. Limiting box; 9. Buffer cavity; 10. First guide rod; 11. Moving block; 12. First adjusting screw; 13. Infrared signal sensor; 14. Buffer hole; 15. Second guide rod; 16. Buffer plate; 17. Support plate; 18. Buffer spring; 19. Second adjusting screw. Detailed Implementation

[0016] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0017] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0018] Please see Figure 1-3 This embodiment proposes a CNC gantry beam structure with a limit device, including a beam body 1 and a slide block 2, wherein the slide block 2, through a transmission mechanism, can move horizontally in the middle region of the beam body 1. Two slide rods 3 are securely mounted on the inner side of the beam body 1, and the slide rods 3 are horizontally symmetrically distributed with the inner side of the beam body 1 as a reference. The inner side of the slide block 2 is movably connected to the outer surface of the slide rods 3, thereby ensuring that the slide block 2 can smoothly slide along the slide rods 3.

[0019] Furthermore, an upper support block 4 and a lower support block 5 are fixedly installed on the outer wall of the slide block 2. There are two upper support blocks 4 and two lower support blocks 5, which are vertically symmetrically distributed with reference to the vertical direction of the outer wall of the slide block 2. Limiting plates 6 and buffer pillars 7 are horizontally welded to the side ends of the upper support blocks 4 and the lower support blocks 5, respectively. The limiting plates 6 and the buffer pillars 7 provide support for subsequent limiting and buffering functions.

[0020] This embodiment also includes a limiting box 8 and a buffer cavity 9. A first guide rod 10 is horizontally fixed inside the limiting box 8, and its outer curved surface is movably connected to the moving block 11. The moving block 11 is U-shaped and is kept on the same horizontal line as the limiting piece 6, ensuring that the first guide rod 10 can accurately guide the moving block 11 horizontally. A first adjusting screw 12 is threaded through the inside of the moving block 11. This screw is rotatably connected to the middle of the limiting box 8 through a rotating shaft, and achieves precise position adjustment of the moving block 11 through the threaded transmission principle. A nut is also threaded to the outer end of the first adjusting screw 12 for locking and tightening the screw, ensuring the stability of the position of the moving block 11. In addition, an infrared signal sensor 13 is fixedly installed inside the moving block 11. This sensor can send and receive infrared limit signals. When the limiting piece 6 moves to the middle of the moving block 11, it will cut off the infrared limit signal of the infrared signal sensor 13, thereby triggering the limit control mechanism. The outer end of the limit box 8 is also equipped with scale lines, which makes it easy for users to intuitively understand the position information of the moving block 11.

[0021] In terms of cushioning, a buffer hole 14 is provided on the inner side of the buffer cavity 9, which is on the same horizontal line as the buffer column 7. A second guide rod 15 is horizontally fixed to the inner wall of the buffer cavity 9, and a buffer plate 16 and a support plate 17 are respectively movably connected to its outer curved surfaces, so that the buffer plate 16 and the support plate 17 are horizontally guided by the second guide rod 15. The buffer plate 16 and the support plate 17 are elastically connected by a buffer spring 18, forming an effective cushioning mechanism. A second adjusting screw 19 is threaded through the outer side of the buffer cavity 9. The inner side of the screw is rotatably connected to the outer side of the support plate 17 through a rotating shaft. By rotating the second adjusting screw 19, the support plate 17 can be positioned and supported. Similarly, a nut is also threaded to the outer end of the second adjusting screw 19 for locking and tightening the screw.

[0022] In practical applications, when the slide block 2 slides horizontally along the outer curved surface of the slide rod 3, it simultaneously drives the upper support block 4 and the lower support block 5, thereby causing the limiting piece 6 and the buffer post 7 to move horizontally. When the limiting piece 6 moves to the middle of the moving block 11, it cuts off the infrared limit signal of the infrared signal sensor 13, triggering the limit control mechanism to ensure that the slide block 2 moves within a preset range. At the same time, the position of the moving block 11 can be adjusted by rotating the first adjusting screw 12, thereby changing the position of the limit signal of the infrared signal sensor 13 and realizing flexible adjustment of the limit control of the slide block 2.

[0023] When the buffer column 7 moves horizontally and inserts into the buffer cavity 9, the buffer plate 16, under the action of the buffer spring 18, will limit and buffer the buffer column 7, effectively reducing the impact force when the slide 2 moves to its extreme position. Furthermore, the support plate 17 can be moved linearly back and forth by rotating the second adjusting screw 19, thereby adjusting the compression or release degree of the buffer spring 18 and changing its elastic potential energy. In this way, while achieving buffering at the extreme position of the slide 2, the buffer potential energy of the buffer spring 18 can be flexibly adjusted according to actual needs, improving the stability and safety of the overall structure.

[0024] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A CNC gantry beam structure with a limit device, characterized in that, It includes a crossbeam body (1) and a slide (2). The outer side wall of the slide (2) is provided with an upper support block (4) and a lower support block (5). The side ends of the upper support block (4) and the lower support block (5) are respectively provided with a limit plate (6) and a buffer column (7). It includes a limiting box (8), a buffer cavity (9) and a moving block (11). A first guide rod (10) is horizontally arranged inside the limiting box (8), and a first adjusting screw (12) is threaded through the inside of the moving block (11). An infrared signal sensor (13) is also installed inside the moving block (11). It also includes a buffer plate (16) and a support plate (17). A second guide rod (15) is horizontally arranged on the inner wall of the buffer cavity (9). The buffer plate (16) and the support plate (17) are elastically connected by a buffer spring (18). A second adjusting screw (19) is threaded through the outer side of the buffer cavity (9).

2. The CNC gantry beam structure with a limit device according to claim 1, characterized in that, The slide block (2) moves horizontally in the middle area of ​​the main body of the crossbeam (1). Two slide rods (3) are securely installed on the inner side of the main body of the crossbeam (1), and the slide rods (3) are horizontally symmetrically distributed with the inner side of the main body of the crossbeam (1) as the reference.

3. The CNC gantry beam structure with a limit device according to claim 1, characterized in that, There are two upper support blocks (4) and two lower support blocks (5), which are vertically and symmetrically distributed with reference to the upper and lower directions of the outer side wall of the slide block (2).

4. The CNC gantry beam structure with a limit device according to claim 1, characterized in that, The movable block (11) is movably connected to the outer curved surface of the first guide rod (10). The movable block (11) is U-shaped and is kept on the same horizontal line as the limiting piece (6).

5. The CNC gantry beam structure with a limit device according to claim 4, characterized in that, The first adjusting screw (12) is rotatably connected to the middle of the limiting box (8) through a rotating shaft. The outer end of the first adjusting screw (12) is also threaded with a nut, and the outer end of the limiting box (8) is also provided with a scale line.

6. The CNC gantry beam structure with a limit device according to claim 5, characterized in that, The buffer cavity (9) has a buffer hole (14) on the same horizontal line as the buffer column (7) on the inner side. The buffer plate (16) and the support plate (17) are respectively attached to the outer curved surfaces on both sides of the second guide rod (15).

7. The CNC gantry beam structure with a limit device according to claim 6, characterized in that, The inner side of the second adjusting screw (19) is rotatably connected to the outer side of the support plate (17) via a rotating shaft, and the outer end of the second adjusting screw (19) is also threaded with a nut.

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