Numerical control milling machine for pentahedron machining

Abstract

The invention relates to the technical field of numerical control milling machines, and discloses a pentahedron machining numerical control milling machine which comprises a base, a left-right moving mechanism is arranged in the base, a front-back moving mechanism is arranged at the upper end of the left-right moving mechanism, a first rotating mechanism is arranged at the upper end of the front-back moving mechanism, and a workbench is arranged at the upper end of the first rotating mechanism. The first rotating mechanism is used for driving the workbench to rotate by 360 degrees. A lifting mechanism is arranged at the rear end of the base, a second rotating mechanism is arranged at the front end of the lifting mechanism, a main shaft is arranged at the front end of the second rotating mechanism, and the second rotating mechanism can clockwise drive the main shaft to rotate by 90 degrees. Five faces of a workpiece can be milled through one-time clamping, and therefore the milling precision and the machining efficiency of the workpiece are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of CNC milling machines, and particularly to a CNC milling machine for five-sided machining. Background Technique

[0002] A CNC milling machine is a device that controls the machining process of a milling machine using digital information technology. Its core is the CNC system. The operator inputs information such as the tool path, cutting parameters, and tool selection required for machining parts into the CNC system in the form of codes by writing machining programs. The CNC system precisely controls each moving part of the milling machine, such as the rotation of the spindle, the feed of the tool, and the movement of the worktable, etc., so as to achieve the automated machining of workpieces.

[0003] Existing CNC milling machines can only machine one surface under one installation condition. When machining other surfaces, clamping needs to be carried out again, resulting in a large number of clamping times, low machining accuracy, and low machining efficiency, which greatly limits the use of CNC milling machines. Therefore, it is urgent to solve this situation. Summary of the Invention

[0004] Technical Problems to be Solved

[0005] Aiming at the deficiencies of the prior art, the present invention provides a CNC milling machine for five-sided machining, which can machine five surfaces of a workpiece with one clamping.

[0006] Technical Solution

[0007] To achieve the above object, the present invention is realized through the following technical solutions: A CNC milling machine for five-sided machining includes a base. A left-right moving mechanism is arranged inside the base. A front-back moving mechanism is arranged at the upper end of the left-right moving mechanism. A first rotating mechanism is arranged at the upper end of the front-back moving mechanism. A worktable is arranged at the upper end of the first rotating mechanism. The first rotating mechanism is used to drive the worktable to rotate 360 degrees;

[0008] A lifting mechanism is arranged at the rear end of the base. A second rotating mechanism is arranged at the front end of the lifting mechanism. A spindle is arranged at the front end of the second rotating mechanism. The second rotating mechanism can drive the spindle to rotate 90 degrees clockwise;

[0009] Protection components are arranged on both the left and right sides of the lifting mechanism. The protection components are used to protect the milling cutter at the working end of the spindle; A reset component is arranged outside the protection components.

[0010] Further, the left - right moving mechanism includes a fixed cover, a moving cover, a first servo motor, a first lead screw, and a first moving block. Fixed covers are fixedly connected to both the left and right sides of the upper end of the base. The surface of the fixed cover is slidably connected to the moving cover. A first lead screw is rotatably connected inside the base. The circumferential surface of the first lead screw is threadedly connected to the first moving block. The first moving block is slidably connected to the base. The upper end of the first moving block is fixedly connected to the moving cover. A first servo motor is fixedly connected to the side end of the base. The output end of the first servo motor is fixedly connected to the first lead screw.

[0011] Further, the front - rear moving mechanism includes a mounting seat, a slider, a second servo motor, a second lead screw, and a second moving block. The mounting seat is fixedly connected to the upper end of the moving cover. The upper end of the mounting seat is slidably connected to the slider. A second lead screw is rotatably connected inside the mounting seat. The circumferential surface of the second lead screw is threadedly connected to the second moving block. The upper end of the second moving block is fixedly connected to the slider. A second servo motor is fixedly connected inside the mounting seat. The output end of the second servo motor is fixedly connected to the second lead screw.

[0012] Further, the first rotating mechanism includes a first support cylinder, a first self - locking servo motor, and a first rotating cylinder. The first support cylinder and the first self - locking servo motor are fixedly connected to the upper end of the slider. The output end of the first self - locking servo motor passes through the upper end of the first support cylinder and is rotatably connected to the first support cylinder. The circumferential surface of the first support cylinder is rotatably connected to the first rotating cylinder. The output end of the first self - locking servo motor is fixedly connected to the first rotating cylinder. The upper end of the first rotating cylinder is fixedly connected to the workbench.

[0013] Further, the lifting mechanism includes a support column, a third servo motor, a third lead screw, and a third moving block. The support column is fixedly connected to the rear end of the base. The third servo motor is fixedly connected to the upper end of the support column. A third lead screw is rotatably connected inside the support column. The circumferential surface of the third lead screw is threadedly connected to the third moving block. The third moving block is slidably connected to the support column. A slide rail is fixedly connected to the front end of the support column. The slide rail is slidably connected to the third moving block. The output end of the third servo motor is fixedly connected to the third lead screw.

[0014] Further, the second rotating mechanism includes a second support cylinder, a second self - locking servo motor, and a second rotating cylinder. The second support cylinder and the second self - locking servo motor are fixedly connected to the front end of the third moving block. The output end of the second self - locking servo motor passes through the front end of the second support cylinder and is rotatably connected to the second support cylinder. The circumferential surface of the second support cylinder is rotatably connected to the second rotating cylinder. The front end of the second rotating cylinder is fixedly connected to the main shaft. The output end of the second self - locking servo motor is fixedly connected to the second rotating cylinder.

[0015] Further, the protection component includes a support plate, a rotating shaft, a gear, a connecting rod, a connecting block, a rack and a protective cover. Both sides of the support column are fixedly connected with support plates. A rotating shaft is rotatably connected inside the support plates. A gear and a connecting rod are fixedly connected to the circumferential surface of the rotating shaft. One end of the connecting rod away from the rotating shaft is fixedly connected with a protective cover. Connecting blocks are fixedly connected to both sides of the third moving block. One end of the connecting block away from the third moving block is fixedly connected with a rack, and the rack meshes with the gear.

[0016] Further, square holes are formed on both sides of the support column. The connecting block is located inside the square hole and is slidably connected with the square hole.

[0017] Further, the reset component includes a fixed cylinder and a torsion spring. The outer side of the support plate is fixedly connected with a fixed cylinder. The fixed cylinder is rotatably connected with the rotating shaft. A torsion spring is fixedly connected inside the fixed cylinder. One end of the torsion spring away from the fixed cylinder is fixedly connected with the rotating shaft.

[0018] Further, a limit stop block is fixedly connected to the inner side of the support plate.

[0019] Beneficial effects

[0020] The present invention provides a numerically controlled milling machine for five-sided machining, having the following beneficial effects:

[0021] (1) For the numerically controlled milling machine for five-sided machining, by setting the first rotating mechanism and the second rotating mechanism, the first rotating mechanism is used to drive the workbench to rotate 360 degrees, so that the whole circumference of the workpiece can be machined. At the same time, with the cooperation of the second rotating mechanism, the main shaft can be driven to rotate from the vertical state to the horizontal state. When the main shaft is in the vertical state, the upper end surface of the workpiece can be machined at this time. When the main shaft is in the horizontal state, the vertical surface of the workpiece can be machined at this time. In this way, it is possible to perform milling machining on the five surfaces of the workpiece with one clamping, thereby improving the machining accuracy and efficiency of the workpiece milling.

[0022] (2) For the numerically controlled milling machine for five-sided machining, by setting the support plate, the rotating shaft, the gear, the connecting rod, the connecting block, the rack and the protective cover, when the device is not in use, the main shaft is in the vertical state. Then, the lifting mechanism is used to drive the main shaft to move upward. As the third moving block moves upward, the rack is driven to move upward with the cooperation of the connecting block. When the rack contacts the gear, as the rack moves upward, the gear will be driven to rotate. Then, with the cooperation of the rotating shaft, the connecting rod is driven to turn downward. As the connecting rod turns, the protective cover is also driven to approach the output end of the main shaft, so that the two protective covers are combined. In this way, with the cooperation of the two protective covers, the milling cutter at the output end of the main shaft can be protected. On the one hand, it can prevent the milling cutter from causing harm to workers, and on the other hand, it can prevent the milling cutter from being damaged when installing the workpiece, thereby improving the service life of the milling cutter. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural view of the whole of the present invention from the first perspective;

[0024] Figure 2 of the present invention Figure 1 is an enlarged view of part A in the present invention;

[0025] Figure 3 is a schematic structural view of the whole of the present invention from the second perspective;

[0026] Figure 4 is a schematic structural view of the present invention after a rear view section;

[0027] Figure 5 of the present invention Figure 4 is an enlarged view of part B in the present invention;

[0028] Figure 6 is a schematic structural view of the present invention after a front view section;

[0029] Figure 7 of the present invention Figure 6 is an enlarged view of part C in the present invention;

[0030] Figure 8 is a schematic structural view of the present invention after a right view section;

[0031] Figure 9 of the present invention Figure 8 is an enlarged view of part D in the present invention;

[0032] Figure 10 is a schematic structural view of the cooperation between the protection component and the reset component of the present invention;

[0033] Figure 11 of the present invention Figure 10 is an enlarged view of part E in the present invention;

[0034] Figure 12 is a schematic structural view of the inside of the reset component of the present invention;

[0035] Figure 13 of the present invention Figure 12 is an enlarged view of part F in the present invention.

[0036] In the figure: 1. Base; 2. Left and right moving mechanism; 201. Fixed cover; 202. Moving cover; 203. First servo motor; 204. First lead screw; 205. First moving block; 3. Front and back moving mechanism; 301. Mounting seat; 302. Slide block; 303. Second servo motor; 304. Second lead screw; 305. Second moving block; 4. First rotating mechanism; 401. First support cylinder; 402. First self-locking servo motor; 403. First rotating cylinder; 5. Workbench; 6. Lifting mechanism; 601. Support column; 602. Third servo motor; 603. Third lead screw; 604. Third moving block; 7. Second rotating mechanism; 701. Second support cylinder; 702. Second self-locking servo motor; 703. Second rotating cylinder; 8. Spindle; 9. Protection component; 901. Support plate; 902. Rotating shaft; 903. Gear; 904. Connecting rod; 905. Connecting block; 906. Rack; 907. Protective cover; 10. Reset component; 1001. Fixed cylinder; 1002. Torsion spring; 11. Square hole; 12. Slide rail; 13. Limit stop block. Detailed implementation mode

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0038] Please refer to Figures 1 to 13 , a numerically controlled milling machine for processing five-sided bodies, including a base 1. A left and right moving mechanism 2 is arranged inside the base 1. A front and back moving mechanism 3 is arranged at the upper end of the left and right moving mechanism 2. A first rotating mechanism 4 is arranged at the upper end of the front and back moving mechanism 3. A workbench 5 is arranged at the upper end of the first rotating mechanism 4. The first rotating mechanism 4 is used to drive the workbench 5 to rotate 360 degrees.

[0039] Specifically, the left - right moving mechanism 2 includes a fixed cover 201, a moving cover 202, a first servo - motor 203, a first lead screw 204, and a first moving block 205. Fixed covers 201 are fixedly connected to both the left and right sides of the upper end of the base 1. The surface of the fixed cover 201 is slidably connected to the moving cover 202. A first lead screw 204 is rotatably connected inside the base 1. The circumferential surface of the first lead screw 204 is threadedly connected to the first moving block 205. The first moving block 205 is slidably connected to the base 1, and the upper end of the first moving block 205 is fixedly connected to the moving cover 202. A first servo - motor 203 is fixedly connected to the side end of the base 1, and the output end of the first servo - motor 203 is fixedly connected to the first lead screw 204. The front - back moving mechanism 3 includes a mounting seat 301, a slider 302, a second servo - motor 303, a second lead screw 304, and a second moving block 305. The mounting seat 301 is fixedly connected to the upper end of the moving cover 202. The upper end of the mounting seat 301 is slidably connected to the slider 302. A second lead screw 304 is rotatably connected inside the mounting seat 301. The circumferential surface of the second lead screw 304 is threadedly connected to the second moving block 305. The upper end of the second moving block 305 is fixedly connected to the slider 302. A second servo - motor 303 is fixedly connected inside the mounting seat 301, and the output end of the second servo - motor 303 is fixedly connected to the second lead screw 304. The first rotating mechanism 4 includes a first support cylinder 401, a first self - locking servo - motor 402, and a first rotating cylinder 403. The first support cylinder 401 and the first self - locking servo - motor 402 are fixedly connected to the upper end of the slider 302. The output end of the first self - locking servo - motor 402 passes through the upper end of the first support cylinder 401 and is rotatably connected to the first support cylinder 401. The circumferential surface of the first support cylinder 401 is rotatably connected to the first rotating cylinder 403. The output end of the first self - locking servo - motor 402 is fixedly connected to the first rotating cylinder 403, and the upper end of the first rotating cylinder 403 is fixedly connected to the workbench 5.

[0040] During use, the first servo - motor 203 operates. At this time, with the cooperation of the first lead screw 204, it can drive the first moving block 205 to move, and then drive the moving cover 202 to slide on the fixed cover 201. As the moving cover 202 moves, it drives the workbench 5 to move left and right. At this time, it is not only convenient for processing the upper end of the workpiece, but also convenient for the workpiece to approach the milling cutter. At the same time, the second servo - motor 303 operates. At this time, with the cooperation of the second lead screw 304, it can drive the second moving block 305 to move, and then drive the slider 302 to slide on the mounting seat 301. As the slider 302 moves back and forth, it can drive the workbench 5 to move back and forth, so that it is convenient to mill the workpiece back and forth. When it is necessary to process different vertical surfaces of the workpiece, the first self - locking servo - motor 402 operates, which can drive the first rotating cylinder 403 to rotate on the first support cylinder 401, and then drive the workbench 5 to rotate, so that it is convenient to process different vertical surfaces of the workpiece.

[0041] A lifting mechanism 6 is provided at the rear end of the base 1, a second rotating mechanism 7 is provided at the front end of the lifting mechanism 6, a main shaft 8 is provided at the front end of the second rotating mechanism 7, and the second rotating mechanism 7 can drive the main shaft 8 to rotate 90 degrees clockwise.

[0042] Specifically, the lifting mechanism 6 includes a support column 601, a third servo motor 602, a third lead screw 603 and a third moving block 604. The support column 601 is fixedly connected to the rear end of the base 1, the third servo motor 602 is fixedly connected to the upper end of the support column 601, the third lead screw 603 is rotatably connected inside the support column 601, the third moving block 604 is threadedly connected to the circumferential surface of the third lead screw 603, the third moving block 604 is slidably connected to the support column 601, and a slide rail 12 is fixedly connected to the front end of the support column 601. The slide rail 12 is slidably connected to the third moving block 604; the output end of the third servo motor 602 is fixedly connected to the third lead screw 603; the second rotating mechanism 7 includes a second support cylinder 701, a second self-locking servo motor 702 and a second rotating cylinder 703. The front end of the third moving block 604 is fixedly connected to the second support cylinder 701 and the second self-locking servo motor 702. The output end of the second self-locking servo motor 702 passes through the front end of the second support cylinder 701 and is rotatably connected to the second support cylinder 701. The second rotating cylinder 703 is rotatably connected to the circumferential surface of the second support cylinder 701, and the front end of the second rotating cylinder 703 is fixedly connected to the main shaft 8; the output end of the second self-locking servo motor 702 is fixedly connected to the second rotating cylinder 703.

[0043] During use, when it is necessary to change the height of the main shaft 8, the third servo motor 602 works, drives the third moving block 604 to move up and down under the cooperation of the third lead screw 603, and then the third moving block 604 can move vertically stably under the cooperation of the slide rail 12. As the third moving block 604 moves up and down, the height of the main shaft 8 can be changed, and thus the height of the milling cutter can be changed, so that it is convenient to mill the upper end surface of workpieces with different heights; when it is necessary to mill the vertical surface of the workpiece, the second self-locking servo motor 702 works, and can drive the second rotating cylinder 703 to rotate on the second support cylinder 701, so that the second rotating cylinder 703 rotates 90 degrees clockwise, so that the main shaft 8 rotates from the vertical state to the horizontal state, thus facilitating the milling of the vertical surface of the workpiece.

[0044] Protection components 9 are provided on both the left and right sides of the lifting mechanism 6. The protection components 9 are used to protect the milling cutter at the working end of the main shaft 8; a reset component 10 is provided outside the protection components 9.

[0045] Specifically, the protection component 9 includes a support plate 901, a rotating shaft 902, a gear 903, a connecting rod 904, a connecting block 905, a rack 906, and a protective cover 907. Support plates 901 are fixedly connected to both sides of the support column 601. The rotating shaft 902 is rotatably connected inside the support plate 901. The circumferential surface of the rotating shaft 902 is fixedly connected with a gear 903 and a connecting rod 904. One end of the connecting rod 904 away from the rotating shaft 902 is fixedly connected with a protective cover 907. Connecting blocks 905 are fixedly connected to both sides of the third moving block 604. One end of the connecting block 905 away from the third moving block 604 is fixedly connected with a rack 906. The rack 906 meshes with the gear 903. The reset component 10 includes a fixed cylinder 1001 and a torsion spring 1002. The fixed cylinder 1001 is fixedly connected to the outside of the support plate 901. The fixed cylinder 1001 is rotatably connected to the rotating shaft 902. The torsion spring 1002 is fixedly connected inside the fixed cylinder 1001. One end of the torsion spring 1002 away from the fixed cylinder 1001 is fixedly connected to the rotating shaft 902.

[0046] During use, when the third slider 302 moves downward, the connecting block 905 can drive the rack 906 to move downward, and then drive the rotating shaft 902 to rotate under the cooperation of the gear 903. As the rotating shaft 902 rotates, it drives the connecting rod 904 to turn upward, and then drives the protective cover 907 away from the lower end of the main shaft 8. In this way, the protective cover 907 releases the protection of the milling cutter, facilitating the milling work of the milling cutter. When the rack 906 disengages from the gear 903, the connecting rod 904 can be driven to turn upward under the cooperation of the torsion spring 1002 and the fixed cylinder 1001, so that the connecting rod 904 turns to the horizontal state. In this way, the protective cover 907 no longer hinders the operation of the equipment, which is beneficial to the stable operation of the equipment. When the device is not in use, the main shaft 8 is in a vertical state. Then, the lifting mechanism 6 is used to drive the main shaft 8 to move upward. As the third moving block 604 moves upward, the connecting block 905 drives the rack 906 to move upward. When the rack 906 contacts the gear 903, as the rack 906 moves upward, it drives the gear 903 to rotate, and then drives the connecting rod 904 to turn downward under the cooperation of the rotating shaft 902. As the connecting rod 904 turns, it also drives the protective cover 907 to approach the output end of the main shaft 8, causing the two protective covers 907 to merge. In this way, the two protective covers 907 can protect the milling cutter at the output end of the main shaft 8. On the one hand, it prevents the milling cutter from hurting workers, and on the other hand, it prevents damage to the milling cutter when installing workpieces, thus increasing the service life of the milling cutter. At the same time, the rotation of the rotating shaft 902 also twists the torsion spring 1002, so that the torsion spring 1002 facilitates the reset of the connecting rod 904.

[0047] Square holes 11 are provided on both sides of the support column 601. The connecting block 905 is located inside the square hole 11 and is slidably connected to the square hole 11. During operation, by providing the square hole 11, the connecting block 905 is facilitated to move under the action of the square hole 11.

[0048] A limiting stop block 13 is fixedly connected to the inner side of the support plate 901. During operation, by providing the limiting stop block 13, the connecting rod 904 can be blocked under the cooperation of the limiting stop block 13 to prevent the connecting rod 904 from flipping excessively, which is beneficial for the connecting rod 904 to stably be in a horizontal state.

[0049] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

Claims

1. A numerically controlled milling machine for processing pentahedrons, characterized in that: It includes a base (1), a left - right moving mechanism (2) is arranged inside the base (1), a front - back moving mechanism (3) is arranged at the upper end of the left - right moving mechanism (2), a first rotating mechanism (4) is arranged at the upper end of the front - back moving mechanism (3), a workbench (5) is arranged at the upper end of the first rotating mechanism (4), and the first rotating mechanism (4) is used to drive the workbench (5) to rotate 360 degrees. A lifting mechanism (6) is arranged at the rear end of the base (1), a second rotating mechanism (7) is arranged at the front end of the lifting mechanism (6), a main shaft (8) is arranged at the front end of the second rotating mechanism (7), and the second rotating mechanism (7) can drive the main shaft (8) to rotate 90 degrees clockwise. Protection components (9) are arranged on both the left and right sides of the lifting mechanism (6), and the protection components (9) are used to protect the milling cutter at the working end of the main shaft (8); a reset component (10) is arranged outside the protection components (9).

2. The numerically controlled milling machine for processing a pentahedron according to claim 1, characterized in that: The left - right moving mechanism (2) includes a fixed cover (201), a moving cover (202), a first servo - motor (203), a first lead screw (204), and a first moving block (205). Fixed covers (201) are fixedly connected to both the left and right sides of the upper end of the base (1), and the moving cover (202) is slidably connected to the surface of the fixed cover (201); the first lead screw (204) is rotatably connected inside the base (1), the first moving block (205) is threadedly connected to the circumferential surface of the first lead screw (204), the first moving block (205) is slidably connected to the base (1), and the upper end of the first moving block (205) is fixedly connected to the moving cover (202); the first servo - motor (203) is fixedly connected to the side end of the base (1), and the output end of the first servo - motor (203) is fixedly connected to the first lead screw (204).

3. The numerically controlled milling machine for processing a pentahedron according to claim 2, wherein: The front - back moving mechanism (3) includes a mounting seat (301), a slider (302), a second servo - motor (303), a second lead screw (304), and a second moving block (305). The mounting seat (301) is fixedly connected to the upper end of the moving cover (202), and the slider (302) is slidably connected to the upper end of the mounting seat (301); the second lead screw (304) is rotatably connected inside the mounting seat (301), the second moving block (305) is threadedly connected to the circumferential surface of the second lead screw (304), the upper end of the second moving block (305) is fixedly connected to the slider (302); the second servo - motor (303) is fixedly connected inside the mounting seat (301), and the output end of the second servo - motor (303) is fixedly connected to the second lead screw (304).

4. A numerically controlled milling machine for processing a pentahedron according to claim 3, characterized in that: The first rotating mechanism (4) includes a first support cylinder (401), a first self-locking servo motor (402), and a first rotating cylinder (403). The upper end of the slider (302) is fixedly connected to the first support cylinder (401) and the first self-locking servo motor (402). The output end of the first self-locking servo motor (402) penetrates through the upper end of the first support cylinder (401) and is rotatably connected to the first support cylinder (401). The circumferential surface of the first support cylinder (401) is rotatably connected to the first rotating cylinder (403). The output end of the first self-locking servo motor (402) is fixedly connected to the first rotating cylinder (403). The upper end of the first rotating cylinder (403) is fixedly connected to the workbench (5).

5. A numerically controlled milling machine for processing a pentahedron according to claim 1, characterized in that: The lifting mechanism (6) includes a support column (601), a third servo motor (602), a third lead screw (603), and a third moving block (604). The rear end of the base (1) is fixedly connected to the support column (601). The upper end of the support column (601) is fixedly connected to the third servo motor (602). The third lead screw (603) is rotatably connected inside the support column (601). The circumferential surface of the third lead screw (603) is threadedly connected to the third moving block (604). The third moving block (604) is slidably connected to the support column (601). The front end of the support column (601) is fixedly connected to a slide rail (12). The slide rail (12) is slidably connected to the third moving block (604). The output end of the third servo motor (602) is fixedly connected to the third lead screw (603).

6. A numerically controlled milling machine for processing pentahedrons according to claim 5, characterized in that: The second rotating mechanism (7) includes a second support cylinder (701), a second self-locking servo motor (702), and a second rotating cylinder (703). The front end of the third moving block (604) is fixedly connected to the second support cylinder (701) and the second self-locking servo motor (702). The output end of the second self-locking servo motor (702) penetrates through the front end of the second support cylinder (701) and is rotatably connected to the second support cylinder (701). The circumferential surface of the second support cylinder (701) is rotatably connected to the second rotating cylinder (703). The front end of the second rotating cylinder (703) is fixedly connected to the main shaft (8). The output end of the second self-locking servo motor (702) is fixedly connected to the second rotating cylinder (703).

7. A CNC milling machine for processing pentahedrons according to claim 5, characterized in that: The protection component (9) includes a support plate (901), a rotating shaft (902), a gear (903), a connecting rod (904), a connecting block (905), a rack (906) and a protective cover (907). Support plates (901) are fixedly connected to both sides of the support column (601). A rotating shaft (902) is rotatably connected inside the support plate (901). A gear (903) and a connecting rod (904) are fixedly connected to the circumferential surface of the rotating shaft (902). One end of the connecting rod (904) away from the rotating shaft (902) is fixedly connected to a protective cover (907). Connecting blocks (905) are fixedly connected to both sides of the third moving block (604). One end of the connecting block (905) away from the third moving block (604) is fixedly connected to a rack (906). The rack (906) meshes with the gear (903).

8. A numerically controlled milling machine for processing a pentahedron according to claim 7, characterized in that: Square holes (11) are formed on both sides of the support column (601). The connecting block (905) is located inside the square hole (11) and is slidably connected to the square hole (11).

9. The numerically controlled milling machine for processing pentahedrons according to claim 7, wherein: The reset component (10) includes a fixed cylinder (1001) and a torsion spring (1002). A fixed cylinder (1001) is fixedly connected to the outside of the support plate (901). The fixed cylinder (1001) is rotatably connected to the rotating shaft (902). A torsion spring (1002) is fixedly connected inside the fixed cylinder (1001). One end of the torsion spring (1002) away from the fixed cylinder (1001) is fixedly connected to the rotating shaft (902).

10. A numerically controlled milling machine for processing pentahedrons according to claim 7, characterized in that: A limit stop block (13) is fixedly connected to the inner side of the support plate (901).

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