CNC annular milling tool

Abstract

The utility model discloses a CNC (computer numerical control) annular milling tool, which belongs to the technical field of milling and comprises a workbench, a fixed circular ring is fixedly connected onto the workbench, a workpiece is placed in the middle of the top surface of the workbench, a rotating circular ring is slidably connected into the fixed circular ring, a rectangular groove is formed in the fixed circular ring, and a workpiece is placed in the rectangular groove. A shifting rod is fixedly connected to the rotating circular ring and slides in the rectangular groove, the surface of the shifting rod is sleeved with a mounting block, and the mounting block is slidably connected to the workbench; the top face of the workbench is provided with a clamping mechanism which adapts to workpieces of different sizes to avoid displacement of the workpieces in the machining process, better clamping force and positioning can be provided for the workpieces of different sizes, it is not needed to replace tools or reposition the workpieces every time machining is conducted, a large amount of working time is saved, and after the workpieces are machined, the machining efficiency is greatly improved. The cleaning brush is used for cleaning to avoid direct contact with chippings by hands, the chippings are timely cleaned to avoid influence on parts in the machine tool, and stable operation of the machine tool is maintained.

Description

Technical Field

[0001] This utility model relates to the field of milling technology, specifically a CNC ring milling fixture. Background Technology

[0002] Circular milling, also known as toroidal milling, is a machining process commonly used for machining circular, annular, or strip-shaped parts. On CNC milling machines, circular milling is typically used to machine complex holes, grooves, contours, or other annular shapes. With the development of manufacturing technology, circular milling has gradually become one of the important methods in precision machining.

[0003] For example, patent CN219703620U discloses a CNC multi-angle ring milling fixture, including a fixture ring, a milling jig, and a positioning device. By setting the milling jig on the fixture ring and controlling it with CNC, the workpiece to be machined can be precisely milled, solving the problem of manual milling. It has the advantages of simple structure, high milling accuracy, and high production efficiency. However, some milling fixtures cannot adapt to workpieces of different sizes, and the fixture needs to be changed or repositioned every time it is processed, which wastes a lot of working time. After the workpiece is processed, cleaning the residual debris by hand can easily cause injury to the hands. However, if it is not cleaned in time, the debris may affect the internal parts of the machine tool. In the long run, this will cause damage to the machine. Moreover, the residual debris will affect the cleanliness and tidiness of the operating environment.

[0004] To address the aforementioned issues, there is an urgent need for innovative design based on the existing milling fixtures. Utility Model Content

[0005] The purpose of this utility model is to provide a CNC ring milling fixture to solve the problem that some milling fixtures mentioned in the background art cannot adapt to workpieces of different sizes, requiring the fixture to be changed or repositioned every time the workpiece is processed, which wastes a lot of working time. After the workpiece is processed, cleaning the residual debris by hand can easily cause injury to the hands. However, if it is not cleaned in time, the debris may affect the internal parts of the machine tool, which will cause machine damage in the long run. Moreover, the residual debris will affect the cleanliness and tidiness of the operating environment.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a CNC ring milling fixture, including a worktable, a fixed ring fixedly connected to the worktable, a workpiece placed in the center of the top surface of the worktable, a rotating ring slidably connected inside the fixed ring, a rectangular groove on the fixed ring, a lever fixedly connected to the rotating ring, the lever sliding inside the rectangular groove, a mounting block sleeved on the surface of the lever, the mounting block slidably connected to the worktable, and a nut threadedly connected to the mounting block; the top surface of the worktable is provided with a clamping mechanism to adapt to different workpiece sizes, prevent workpiece displacement during processing, and improve its stability.

[0007] Preferably, the clamping mechanism includes a fixed block fixed on a fixed ring, and the fixed block has a movable groove; the movable groove is provided at equal angles along the central axis of the fixed ring.

[0008] Preferably, a cylinder is slidably connected inside the movable groove, a cylinder is fixedly installed on the rotating ring, a clamping plate is sleeved on the cylinder and the cylinder, and a contact rod is fixedly connected to the clamping plate.

[0009] Preferably, the inner wall of the rotating ring is provided with a cleaning mechanism for cleaning workpiece debris and keeping the operating environment clean and tidy.

[0010] Preferably, the cleaning mechanism includes a cleaning brush fixed to the bottom of the clamping plate, and a groove is provided on the rotating ring.

[0011] Preferably, a spring is fixedly connected to the groove; multiple springs are arranged at equal angles along the central axis of the rotating ring in the groove.

[0012] Preferably, the other end of the spring is fixedly connected to a sliding plate, which is slidably connected in the groove, and one end of the sliding plate is set in an inclined state.

[0013] Compared with the prior art, the beneficial effects of this utility model are: the milling fixture can adapt to workpieces of different sizes, providing better clamping force and positioning, preventing the workpiece from shifting during milling, eliminating the need to change the fixture or reposition it every time it is processed, saving a lot of working time, and after the workpiece is processed, it can be cleaned with a cleaning brush to avoid direct contact with the debris by hand, which protects the operator, keeps the operating environment clean and tidy, and cleans the debris in time to avoid affecting the internal parts of the machine tool and maintain the stable operation of the machine tool.

[0014] Furthermore, the top surface of the worktable is equipped with a clamping mechanism that adapts to different workpiece sizes, prevents workpiece displacement during processing, and improves stability. Through the cooperation of components such as clamping plates, contact rods, and movable slots, when the rotating ring rotates, the clamping plates fitted on the cylinder and column allow the cylinder to slide in the movable slot. The clamping plates can be adjusted in position to adapt to workpieces of different sizes, providing better clamping force and positioning, preventing workpiece displacement during milling, eliminating the need to change tooling or reposition for each processing session, and saving a significant amount of working time.

[0015] Furthermore, the inner wall of the rotating ring is equipped with a cleaning mechanism to remove workpiece debris and maintain a clean and tidy operating environment. Through the cooperation of components such as cleaning brushes, springs, and sliding plates, when the clamping plate moves, it drives the cleaning brush fixed at the bottom of the clamping plate to move. When the cleaning brush contacts the non-tilted end of the sliding plate, the spring is compressed. When the cleaning brush slides to the tilted end, the spring force disappears. This allows the cleaning brush to remove debris after the workpiece is processed, avoiding direct contact with the debris by hand, thus protecting the operator, maintaining a clean and tidy operating environment, and promptly removing debris to prevent it from affecting the internal parts of the machine tool and maintaining the stable operation of the machine tool. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the workbench of this utility model.

[0017] Figure 2 This is a three-dimensional structural diagram of the lever of this utility model.

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of the clamping plate of this utility model.

[0019] Figure 4 This is a three-dimensional structural diagram of the sliding plate of this utility model.

[0020] Figure 5 This is a schematic diagram of the three-dimensional structure of the spring of this utility model.

[0021] Figure 6 This utility model Figure 4 Enlarged structural diagram at point A in the middle.

[0022] In the diagram: 1. Workbench; 2. Fixed ring; 3. Rotating ring; 4. Workpiece; 5. Rectangular groove; 6. Lever; 7. Mounting block; 8. Nut; 9. Movable groove; 10. Cylinder; 11. Clamping plate; 12. Cylindrical tube; 13. Contact rod; 14. Groove; 15. Spring; 16. Sliding plate; 17. Cleaning brush; 18. Fixed block. 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. 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.

[0024] Example 1: Please refer to Figures 1-6This utility model provides the following technical solution: A CNC ring milling fixture includes a worktable 1, a fixed ring 2 fixedly connected to the worktable 1, a workpiece 4 placed in the center of the top surface of the worktable 1, a rotating ring 3 slidably connected inside the fixed ring 2, a rectangular groove 5 formed on the fixed ring 2, a lever 6 fixedly connected to the rotating ring 3, the lever 6 sliding inside the rectangular groove 5, a mounting block 7 sleeved on the surface of the lever 6, the mounting block 7 slidably connected to the worktable 1, and a nut 8 threadedly connected to the mounting block 7; the worktable The top surface of 1 is provided with a clamping mechanism to adapt to different workpiece sizes 4, prevent workpiece 4 from shifting during processing, and improve its stability. The clamping mechanism includes a fixed block 18 fixed on a fixed ring 2, and a movable groove 9 is provided on the fixed block 18. Multiple movable grooves 9 are provided at equal angles along the central axis of the fixed ring 2. A cylinder 10 is slidably connected inside the movable groove 9. A cylinder 12 is fixedly installed on the rotating ring 3. A clamping plate 11 is sleeved on the cylinder 10 and the cylinder 12. A contact rod 13 is fixedly connected to the clamping plate 11.

[0025] When the operator begins work, placing the workpiece 4 in the center of the top surface of the workbench 1, the operator manually moves the lever 6. The lever 6 begins to slide inside the rectangular groove 5, and the rotating ring 3 fixed on the lever 6 begins to rotate, causing the cylinder 12 fixed on the rotating ring 3 to move. At this time, the clamping plate 11, which is fitted onto the cylinder 12 and the cylindrical column 10, begins to move away from the center of the workbench 1. Simultaneously, the cylindrical column 10 slides in the sliding groove 9. When the contact rod 13 fixed on the clamping plate 11 contacts the clamped workpiece 4, the workpiece 4 can be clamped. The mounting block 7 on the surface of rod 6 is fixed to the worktable 1 with nut 8 to prevent the workpiece 4 from shifting during processing. When different sizes of workpiece 4 need to be processed, simply remove the processed workpiece 4, remove nut 8, place the new workpiece 4 in the center of the top surface of the worktable 1, and repeat the above operation. This milling fixture can adapt to different sizes of workpiece 4, providing better clamping force and positioning, and preventing the workpiece 4 from shifting during milling. It does not require changing the fixture or repositioning every time processing, saving a lot of working time.

[0026] Example 2: Based on Example 1, a cleaning mechanism is also disclosed, the specific structure of which is as follows: The inner wall of the rotating ring 3 is provided with a cleaning mechanism for cleaning the debris of the workpiece 4 and keeping the operating environment clean and tidy. The cleaning mechanism includes a cleaning brush 17 fixed to the bottom of the clamping plate 11. A groove 14 is provided on the rotating ring 3, and a spring 15 is fixedly connected to the groove 14. Multiple springs 15 are arranged at equal angles along the central axis of the rotating ring 3 in the groove 14. The other end of the spring 15 is fixedly connected to a sliding plate 16. The sliding plate 16 is slidably connected in the groove 14, and one end of the sliding plate 16 is set in an inclined state.

[0027] After milling is completed, residual machining debris needs to be cleaned up promptly. Simply move lever 6 by hand. Lever 6 rotates the rotating ring 3, and simultaneously, clamping plate 11 begins to move away from the center of the worktable 1. Cleaning brush 17, fixed to the bottom of clamping plate 11, also begins to move. As cleaning brush 17 moves away from the center of sliding plate 16, because one end of sliding plate 16 is tilted, cleaning brush 17 contacts and presses against sliding plate 16. Spring 15, fixed between sliding plate 16 and groove 14, contracts under pressure. When cleaning brush 17 moves towards the center of sliding plate 16, the pressure on spring 15 disappears, causing sliding plate 16 to return to its original position. This allows for rapid loosening of debris adhering to sliding plate 16, making cleaning more thorough. Furthermore, after machining, cleaning with cleaning brush 17 avoids direct contact with debris by hand, protecting operators, maintaining a clean and tidy operating environment, and preventing debris from affecting internal machine parts, thus ensuring stable machine operation.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A CNC ring milling tooling comprising a worktable (1) characterised in that: The workbench (1) is fixedly connected with a fixed ring (2), the workbench (1) top surface middle part is placed with a workpiece (4), the inside of the fixed ring (2) is slidably connected with a rotating ring (3), the fixed ring (2) is provided with a rectangular slot (5), the rotating ring (3) is fixedly connected with a lever (6), the lever (6) is slidably arranged in the rectangular slot (5), the surface of the lever (6) is sleeved with a mounting block (7), the mounting block (7) is slidably connected on the workbench (1), the mounting block (7) is threadedly connected with a nut (8). The top surface of the workbench (1) is provided with a clamping mechanism which can adapt to different sizes of workpieces (4) to avoid displacement of the workpieces (4) during machining and improve the stability of the workpieces (4).

2. The CNC ring milling tooling of claim 1, wherein: The clamping mechanism comprises a fixed block (18) fixed on the fixed ring (2), and an active slot (9) is formed in the fixed block (18). The active slot (9) is provided with a plurality of equal-angle slots along the central axis of the fixed ring (2).

3. A CNC ring milling tooling as claimed in claim 2, wherein: A cylindrical column (10) is slidably connected in the active slot (9), a cylindrical cylinder (12) is fixedly installed on the rotating ring (3), a clamping plate (11) is sleeved on the cylindrical column (10) and the cylindrical cylinder (12), and a contact rod (13) is fixedly connected to the clamping plate (11).

4. The CNC ring milling tooling of claim 1, wherein: The inner wall of the rotating ring (3) is provided with a cleaning mechanism for cleaning the workpiece (4) debris and keeping the operating environment clean and tidy.

5. A CNC ring milling tooling as claimed in claim 4, wherein: The cleaning mechanism comprises a cleaning brush (17) fixed on the bottom of the clamping plate (11), and a recess (14) is formed in the rotating ring (3).

6. A CNC ring milling tooling as claimed in claim 5, wherein: The recess (14) is fixedly connected with a spring (15). The spring (15) is provided with a plurality of equal-angle springs along the central axis of the rotating ring (3) in the recess (14).

7. A CNC ring milling tooling as claimed in claim 6, wherein: The other end of the spring (15) is fixedly connected with a sliding plate (16), the sliding plate (16) is slidably connected in the recess (14), and one end of the sliding plate (16) is arranged in an inclined state.

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