Steel pipe cutting equipment based on numerical control machining technology

Abstract

The invention discloses steel pipe cutting equipment based on a numerical control machining technology, and relates to the technical field of steel pipe cutting. According to the steel pipe cutting equipment based on the numerical control machining technology, through the unique matching structure of the first sliding groove, the second sliding groove, the connecting column and the moving block, the distance between the first mounting plate and the second mounting plate can be rapidly and accurately adjusted according to the diameter of a steel pipe, and the steel pipe cutting equipment can be suitable for machining of various steel pipes of different specifications; the universality and the production efficiency of the equipment are greatly improved; a first electric telescopic rod drives a pressing plate to preliminarily fix a steel pipe to a first arc-shaped plate, and then in the process that a hydraulic cylinder drives a third mounting frame to move, secondary clamping and fixing of the steel pipe by a clamping plate are achieved through transmission structures such as a first rack, a second gear, a first gear and a second rack; by means of the double fixing mode, the stability of the steel pipe in the cutting process is greatly enhanced, the problem that the cutting precision is reduced due to displacement and vibration of the steel pipe is effectively solved, and the rejection rate is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of steel pipe cutting, and specifically to a steel pipe cutting device based on numerical control processing technology. Background Art

[0002] In modern industrial production, steel pipes, as important basic materials, are widely used in multiple fields such as construction, machinery manufacturing, petrochemical industry, etc. Taking the construction industry as an example, the steel structure frameworks of high-rise buildings require a large number of steel pipes of different specifications, and their cutting accuracy directly affects the overall stability and safety of the building; in the petrochemical field, the processing accuracy and surface quality of steel pipes used for conveying pipelines are even related to the stable operation and safety of the entire chemical production system. With the advent of the Industrial 4.0 era and the rapid development of intelligent manufacturing technology, the requirements for the processing accuracy and production efficiency of steel pipes in industrial production have reached an unprecedented height. As the requirements for the processing accuracy and production efficiency of steel pipes in various industries continue to increase, steel pipe cutting processing has become a key link. During the cutting process of existing steel pipe cutting processing equipment, the fixing method is not stable enough, and the steel pipe is prone to displacement during cutting, resulting in a decrease in cutting accuracy, the production of defective products, and an increase in production costs. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the present invention provides a steel pipe cutting device based on numerical control processing technology to solve the problems raised in the above background art:

[0004] During the cutting process of existing steel pipe cutting processing equipment, the fixing method is not stable enough, and the steel pipe is prone to displacement during cutting, resulting in a decrease in cutting accuracy, the production of defective products, and an increase in production costs.

[0005] To achieve the above objectives, the present invention is realized through the following technical solutions:

[0006] A steel pipe cutting device based on numerical control machining technology, comprising a base. One end of the top of the base is fixedly connected with a fixed frame. A first mounting frame is slidably connected inside the fixed frame. A mounting seat is fixedly connected inside the base. A connecting plate is slidably connected inside the mounting seat. A second chute penetrating its surface is opened at the center of one side of the base. First chutes are symmetrically opened on one side surface of the connecting plate and outside the second chute. A moving block is slidably connected to the top of the mounting seat. A connecting column is fixedly connected to the top of the moving block. The connecting column is slidably connected to the inside of the second chute and the first chute. A second mounting plate is fixedly connected inside the base. A first mounting plate is slidably connected inside the base and outside the second mounting plate. The bottoms of the first mounting plate and the second mounting plate are both fixedly connected to the moving block. A first arc-shaped plate is fixedly connected to the tops of the first mounting plate and the second mounting plate. A second arc-shaped plate is fixedly connected to the top of one end of the first mounting plate and the second mounting plate. Clamping plates are symmetrically slidably connected inside the second arc-shaped plate. A fixed seat is fixedly connected inside the first mounting frame. A third mounting frame is slidably connected to one side of the fixed seat. A first motor is fixedly connected inside the third mounting frame. An output end of the first motor is fixedly connected with a cutting knife.

[0007] Preferably, support frames are symmetrically fixedly connected to the top of the second arc-shaped plate. A first gear is rotatably connected to one side of the support frame. A second gear is rotatably connected to one side of the first gear. A first rack is slidably connected inside the support frame. One side of the first rack is meshed with the second gear. A second rack is slidably connected inside the support frame. One side of the second rack is meshed with the first gear. One side of the second rack is fixedly connected to the clamping plate.

[0008] Preferably, a second sliding rod is fixedly connected inside the second arc-shaped plate. The outside of the second sliding rod is slidably connected to the clamping plate. A first spring is fixedly connected between one side of the clamping plate and the second arc-shaped plate. A second electric telescopic rod is fixedly connected to one side of the mounting seat. One end of the second electric telescopic rod is fixedly connected to one end of the connecting plate.

[0009] Preferably, a second mounting frame is fixedly connected to the top of one end of the base. A first moving plate is slidably connected inside the second mounting frame. A pressing plate is fixedly connected to the bottom of the first moving plate. A first electric telescopic rod is fixedly connected to the top of the second mounting frame. An output end of the first electric telescopic rod passes through the bottom of the second mounting frame and is fixedly connected to the first moving plate.

[0010] Preferably, a lead screw is rotatably connected inside the fixing frame, the outer side of the lead screw is threadedly connected to the first mounting frame, one side of the fixing frame is fixedly connected to a second motor, and one end of the lead screw passes through one side of the fixing frame and is fixedly connected to the output end of the second motor.

[0011] Preferably, a first sliding rod is fixedly connected to the bottom of the first mounting frame, a second moving plate is slidably connected inside the fixing frame, and the outer side of the first sliding rod is slidably connected to the second moving plate.

[0012] Preferably, a third mounting frame is slidably connected to one side of the fixing seat, and a second spring is fixedly connected between one side of the third mounting frame and the fixing seat.

[0013] Preferably, a third spring is fixedly connected between the bottom of the second moving plate and the fixing frame.

[0014] Preferably, a hydraulic cylinder is fixedly connected to the top of the first mounting frame, and the output end of the hydraulic cylinder is fixedly connected to the third mounting frame.

[0015] The present invention provides a steel pipe cutting device based on numerical control processing technology. Compared with the prior art, it has the following beneficial effects:

[0016] 1. For the steel pipe cutting device based on numerical control processing technology, through the unique cooperation structure of the first chute, the second chute, the connecting column and the moving block, it can quickly and accurately adjust the distance between the first mounting plate and the second mounting plate according to the diameter of the steel pipe, without complicated manual debugging, and can be applied to the processing of various different specifications of steel pipes, greatly improving the versatility and production efficiency of the device.

[0017] 2. For the steel pipe cutting device based on numerical control processing technology, the first electric telescopic rod drives the pressing plate to initially fix the steel pipe on the first arc-shaped plate. Subsequently, during the process of the hydraulic cylinder driving the third mounting frame to move, through transmission structures such as the first rack, the second gear, the first gear, and the second rack, the secondary clamping and fixing of the steel pipe by the clamping plate is realized. This double fixing method greatly enhances the stability of the steel pipe during the cutting process, effectively avoids the problem of decreased cutting accuracy caused by the displacement and vibration of the steel pipe, and greatly reduces the rejection rate.

[0018] 3. For the steel pipe cutting device based on numerical control processing technology, after the cutting is completed, through the design of the third spring driving the second moving plate to reset and the first spring driving the clamping plate to reset, it can automatically release the fixation of the cut steel pipe, facilitating the collection and processing by the staff, further improving the convenience and automation degree of the device operation, and promoting the development of steel pipe cutting processing towards the direction of high efficiency, intelligence and precision. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1Schematic diagram of the three-dimensional structure of the present invention;

[0020] Figure 2 Schematic diagram of the bottom structure of the present invention;

[0021] Figure 3 Side view of the present invention;

[0022] Figure 4 Schematic diagram of the internal structure of the present invention;

[0023] Figure 5 Schematic diagram of the structure of the second mounting bracket of the present invention;

[0024] Figure 6 Schematic diagram of the structure of the second arc-shaped plate of the present invention;

[0025] Figure 7 Schematic diagram of the structure of the mounting base of the present invention;

[0026] Figure 8 For the present invention Figure 3 Schematic diagram of the enlarged structure at the local part A in;

[0027] Figure 9 For the present invention Figure 3 Schematic diagram of the enlarged structure at the local part B in.

[0028] In the figure: 1, base; 2, fixing frame; 3, lead screw; 4, first mounting bracket; 5, hydraulic cylinder; 6, mounting base; 7, first electric telescopic rod; 8, second mounting bracket; 9, first moving plate; 10, pressing plate; 11, first mounting plate; 12, first arc-shaped plate; 13, first sliding rod; 14, third mounting bracket; 15, cutting knife; 16, first motor; 17, second motor; 18, connecting plate; 19, first chute; 20, second chute; 21, moving block; 22, connecting column; 23, second electric telescopic rod; 24, second arc-shaped plate; 25, first spring; 26, clamping plate; 27, support frame; 28, first rack; 29, first gear; 30, second gear; 31, second rack; 32, second spring; 33, second moving plate; 34, third spring; 35, second sliding rod; 36, second mounting plate; 38, fixing seat. Detailed implementation manners

[0029] 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. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] Please refer to Figures 1 to 9, the present invention provides a technical solution: a steel pipe cutting device based on numerical control machining technology, including a base 1. One end of the top of the base 1 is fixedly connected with a fixed frame 2. A first mounting frame 4 is slidably connected inside the fixed frame 2. An installation seat 6 is fixedly connected inside the base 1. A connecting plate 18 is slidably connected inside the installation seat 6, and the connecting plate 18 moves along the inside of the installation seat 6. A second chute 20 penetrating its surface is provided at the center of one side of the base 1. First chutes 19 are symmetrically provided on one side surface of the connecting plate 18 and outside the second chute 20. The first chutes 19 are inclined. A moving block 21 is slidably connected to the top of the installation seat 6. There are three groups of moving blocks 21. A connecting column 22 is fixedly connected to the top of the moving block 21. The movement of the connecting column 22 drives the connecting column 22 to move. The connecting column 22 is slidably connected to both the inside of the second chute 20 and the first chute 19. When the connecting plate 18 drives the second chute 20 and the first chute 19 to move, since the first chute 19 is in an inclined state, when the first chute 19 moves, it drives two groups of moving blocks 21 to move through the connecting column 22, and the second chute 20 moves along the outside of the other connecting column 22. A second mounting plate 36 is fixedly connected inside the base 1. A first mounting plate 11 is slidably connected inside the base 1 and outside the second mounting plate 36. The bottoms of both the first mounting plate 11 and the second mounting plate 36 are fixedly connected to the moving blocks 21. The movement of the moving blocks 21 drives the two groups of first mounting plates 11 to move, so as to better adjust the distance between the first mounting plate 11 and the second mounting plate 36 according to the diameter of the steel pipe. A first arc plate 12 is fixedly connected to the tops of the first mounting plate 11 and the second mounting plate 36. The movement of the first mounting plate 11 and the second mounting plate 36 drives the first arc plate 12 to move, so as to better place the steel pipe on the top of the first arc plate 12. A second arc plate 24 is fixedly connected to the top of one end of the first mounting plate 11 and the second mounting plate 36. There are three groups of second arc plates 24, and the three groups of second arc plates 24 are arranged staggeredly to prevent the second arc plates 24 from colliding when the two second mounting plates 36 come into contact with the first mounting plate 11. Clamping plates 26 are symmetrically slidably connected inside the second arc plates 24. The clamping plates 26 move along the top of the second arc plates 24 to fix the steel pipe and prevent the movement of the steel pipe during cutting from affecting the cutting accuracy. A fixed seat 38 is fixedly connected inside the first mounting frame 4. The movement of the first mounting frame 4 drives the fixed seat 38 to move. A third mounting frame 14 is slidably connected to one side of the fixed seat 38. A first motor 16 is fixedly connected inside the third mounting frame 14. The output end of the first motor 16 is fixedly connected with a cutting tool 15. The movement of the third mounting frame 14 drives the first motor 16 to move. After the first motor 16 is started, it drives the cutting tool 15 to rotate to cut the steel pipe.

[0031] Furthermore, support frames 27 are symmetrically and fixedly connected to the top of the second arc-shaped plate 24. A first gear 29 is rotatably connected to one side of the support frame 27. A second gear 30 is rotatably connected to one side of the first gear 29. The rotation of the second gear 30 drives the first gear 29 to rotate. A first rack 28 is slidably connected to the inside of the support frame 27. One side of the first rack 28 is meshed and connected to the second gear 30. The movement of the first rack 28 drives the second gear 30 to rotate. A second rack 31 is slidably connected to the inside of the support frame 27. One side of the second rack 31 is meshed and connected to the first gear 29. The rotation of the first gear 29 drives the second rack 31 to move. One side of the second rack 31 is fixedly connected to the clamping plate 26. The movement of the second rack 31 drives the clamping plate 26 to move, clamping and fixing the steel pipe.

[0032] Furthermore, a second slide bar 35 is fixedly connected to the inside of the second arc-shaped plate 24. The outside of the second slide bar 35 is slidably connected to the clamping plate 26. A first spring 25 is fixedly connected between one side of the clamping plate 26 and the second arc-shaped plate 24. The clamping plate 26 moves along the outside of the second slide bar 35 to squeeze the first spring 25. The first spring 25 generates elastic force when being squeezed. When the first spring 25 loses the pressing force, under the action of the elastic force, the first spring 25 drives the clamping plate 26 to return to its original position. A second electric telescopic rod 23 is fixedly connected to one side of the mounting seat 6. One end of the second electric telescopic rod 23 is fixedly connected to one end of the connecting plate 18. After the second electric telescopic rod 23 is turned on, it drives the connecting plate 18 to move.

[0033] Furthermore, a second mounting frame 8 is fixedly connected to the top of one end of the base 1. A first moving plate 9 is slidably connected to the inside of the second mounting frame 8. The first moving plate 9 moves along the inside of the second mounting frame 8. A pressing plate 10 is fixedly connected to the bottom of the first moving plate 9. The movement of the first moving plate 9 drives the pressing plate 10 to move. The bottom of the pressing plate 10 is arc-shaped, which better fits the top of the steel pipe, fixing the steel pipe between the first arc-shaped plate 12 and the pressing plate 10. A first electric telescopic rod 7 is fixedly connected to the top of the second mounting frame 8. The output end of the first electric telescopic rod 7 passes through the bottom of the second mounting frame 8 and is fixedly connected to the first moving plate 9. When the first electric telescopic rod 7 is turned on, it drives the first moving plate 9 to move.

[0034] Furthermore, a lead screw 3 is rotatably connected to the inside of the fixing frame 2. The outside of the lead screw 3 is threadedly connected to the first mounting frame 4. The rotation of the lead screw 3 drives the first mounting frame 4 to move. A second motor 17 is fixedly connected to one side of the fixing frame 2. One end of the lead screw 3 passes through one side of the fixing frame 2 and is fixedly connected to the output end of the second motor 17. When the second motor 17 is turned on, it drives the lead screw 3 to rotate.

[0035] Further, a first sliding rod 13 is fixedly connected to the bottom of the first mounting bracket 4. A second moving plate 33 is slidably connected inside the fixed bracket 2. The outer side of the first sliding rod 13 is slidably connected to the second moving plate 33, and the second moving plate 33 moves along the outer side of the first sliding rod 13.

[0036] Further, a second spring 32 is fixedly connected between one side of the third mounting bracket 14 and the fixed seat 38. When the third mounting bracket 14 moves, the second spring 32 is compressed. The second spring 32 generates elastic force under compression. When the second spring 32 loses the pressing force, under the action of the elastic force, the second spring 32 drives the third mounting bracket 14 to return to its original position.

[0037] Further, a third spring 34 is fixedly connected between the bottom of the second moving plate 33 and the fixed bracket 2. The bottom of the second moving plate 33 is in contact with the first rack 28. When the second moving plate 33 moves, it drives the first rack 28 to move. When the second moving plate 33 moves, the third spring 34 is compressed. The third spring 34 generates elastic force under compression. When the third spring 34 loses the pressing force, under the action of the elastic force, the third spring 34 drives the second moving plate 33 to return to its original position.

[0038] Further, a hydraulic cylinder 5 is fixedly connected to the top of the first mounting bracket 4. The output end of the hydraulic cylinder 5 is fixedly connected to the third mounting bracket 14. After the hydraulic cylinder 5 is opened, it drives the third mounting bracket 14 to move.

[0039] During use, when machining the steel pipe, first, according to the diameter of the steel pipe, start the second electric telescopic rod 23 on one side of the mounting seat 6. The second electric telescopic rod 23 extends or retracts, driving the connecting plate 18 to move along the inside of the mounting seat 6. Since the first chute 19 on one side surface of the connecting plate 18 is inclined, and both the second chute 20 and the first chute 19 are internally slidably connected to the connecting column 22, when the connecting plate 18 moves, the first chute 19 drives the two groups of moving blocks 21 to move through the connecting column 22, and the second chute 20 moves along the outside of the other group of connecting columns 22, thereby driving the second mounting plate 36 fixedly connected to the moving block 21 to move. The position of the first mounting plate 11 remains unchanged, realizing the adjustment of the distance between the first mounting plate 11 and the second mounting plate 36 to adapt to the diameter of the steel pipe. After placing the steel pipe on the top of the first arc-shaped plate 12, start the first electric telescopic rod 7 on the top of the second mounting frame 8. The first electric telescopic rod 7 drives the first moving plate 9 to move downward along the inside of the second mounting frame 8, so that the pressing plate 10 with an arc-shaped bottom fixes the steel pipe between the first arc-shaped plate 12 and the pressing plate 10. At the same time, the lead screw 3 is threadedly connected to the first mounting frame 4 and is driven by the second motor 17 to drive the first mounting frame 4 to slide inside the fixed frame 2, adjusting the position of the first mounting frame 4 so that the cutting tool 15 is aligned with the cutting part of the steel pipe. Start the hydraulic cylinder 5. The hydraulic cylinder 5 drives the third mounting frame 14 to move. The third mounting frame 14 moves with the fixed seat 38 moving along the outside of the first slide bar 13. The width of the fixed seat 38 is greater than the width of the second moving plate 33, facilitating the fixed seat 38 to drive the cutting tool 15 to move back and forth outside the second moving plate 33. The fixed seat 38 moves to drive the second moving plate 33 to move. The second moving plate 33 moves downward. The bottom of the second moving plate 33 contacts and pushes the first rack 28 to move. The first rack 28 meshes with the second gear 30, driving the second gear 30 to rotate. The second gear 30 then drives the first gear 29 meshing with it to rotate. The rotation of the first gear 29 drives the second rack 31 to move. Since one side of the second rack 31 is fixedly connected to the clamping plate 26, the clamping plate 26 moves along the second slide bar 35, realizing the secondary clamping and fixing of the steel pipe by the clamping plate 26. This double fixing method greatly enhances the stability of the steel pipe during cutting, effectively avoiding the problem of reduced cutting accuracy caused by the displacement and vibration of the steel pipe, and greatly reducing the rejection rate. At this time, the second moving plate 33 is blocked by resistance and will no longer move. The third mounting frame 14 moves along one side of the fixed seat 38, squeezing the second spring 32. The third mounting frame 14 drives the cutting tool 15 to gradually move downward. Start the first motor 16. The first motor 16 drives the cutting tool 15 to rotate to cut the steel pipe. After cutting is completed, the hydraulic cylinder 5 drives the third mounting frame 14 to move upward. At the same time, after the third spring 34 connecting the second moving plate 33 and the fixed frame 2 loses the pressing force, it drives the second moving plate 33 to return to its original position under the action of the elastic force.When the pressing of the second moving plate 33 is lost, the first spring 25 will drive the clamping plate 26 to return to its original position, releasing the fixation of the cut steel pipe, which facilitates the staff to collect and process it.

[0040] Meanwhile, the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0041] 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. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0042] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A steel pipe cutting device based on numerical control machining technology, comprising a base (1), characterized in that: One end of the top of the base (1) is fixedly connected with a fixing frame (2). A first mounting frame (4) is slidably connected inside the fixing frame (2). An installation seat (6) is fixedly connected inside the base (1). A connecting plate (18) is slidably connected inside the installation seat (6). A second chute (20) penetrating its surface is provided at the center of one side of the base (1). First chutes (19) are symmetrically provided on one side surface of the connecting plate (18) and outside the second chute (20). A moving block (21) is slidably connected to the top of the installation seat (6). A connecting column (22) is fixedly connected to the top of the moving block (21). The connecting column (22) is slidably connected to the inside of both the second chute (20) and the first chute (19). A second mounting plate (36) is fixedly connected inside the base (1). A first mounting plate (11) is slidably connected inside the base (1) and outside the second mounting plate (36). The bottoms of both the first mounting plate (11) and the second mounting plate (36) are fixedly connected to the moving block (21). A first arc plate (12) is fixedly connected to the tops of the first mounting plate (11) and the second mounting plate (36). A second arc plate (24) is fixedly connected to one end of the tops of the first mounting plate (11) and the second mounting plate (36). Clamping plates (26) are symmetrically and slidably connected inside the second arc plate (24). A fixing seat (38) is fixedly connected inside the first mounting frame (4). A third mounting frame (14) is slidably connected to one side of the fixing seat (38). A first motor (16) is fixedly connected inside the third mounting frame (14). A cutting knife (15) is fixedly connected to the output end of the first motor (16).

2. The steel pipe cutting equipment based on numerical control machining technology according to claim 1, wherein: Support frames (27) are symmetrically fixedly connected to the top of the second arc plate (24). A first gear (29) is rotatably connected to one side of the support frame (27). A second gear (30) is rotatably connected to one side of the first gear (29). A first rack (28) is slidably connected inside the support frame (27). One side of the first rack (28) is meshed with the second gear (30). A second rack (31) is slidably connected inside the support frame (27). One side of the second rack (31) is meshed with the first gear (29). One side of the second rack (31) is fixedly connected to the clamping plate (26).

3. The steel pipe cutting equipment based on numerical control machining technology according to claim 2, characterized in that: A second slide bar (35) is fixedly connected inside the second arc plate (24). The outside of the second slide bar (35) is slidably connected to the clamping plate (26). A first spring (25) is fixedly connected between one side of the clamping plate (26) and the second arc plate (24). A second electric telescopic rod (23) is fixedly connected to one side of the installation seat (6). One end of the second electric telescopic rod (23) is fixedly connected to one end of the connecting plate (18).

4. A steel pipe cutting device based on numerical control machining technology according to claim 1, characterized in that: One end of the top of the base (1) is fixedly connected to a second mounting bracket (8). A first moving plate (9) is slidably connected inside the second mounting bracket (8). A pressing plate (10) is fixedly connected to the bottom of the first moving plate (9). A first electric telescopic rod (7) is fixedly connected to the top of the second mounting bracket (8). The output end of the first electric telescopic rod (7) passes through the bottom of the second mounting bracket (8) and is fixedly connected to the first moving plate (9).

5. A steel pipe cutting device based on numerical control machining technology according to claim 1, characterized in that: A lead screw (3) is rotatably connected inside the fixing bracket (2). The outer side of the lead screw (3) is threadedly connected to the first mounting bracket (4). A second motor (17) is fixedly connected to one side of the fixing bracket (2). One end of the lead screw (3) passes through one side of the fixing bracket (2) and is fixedly connected to the output end of the second motor (17).

6. The steel pipe cutting equipment based on numerical control machining technology according to claim 1, characterized in that: A first sliding rod (13) is fixedly connected to the bottom of the first mounting bracket (4). A second moving plate (33) is slidably connected inside the fixing bracket (2). The outer side of the first sliding rod (13) is slidably connected to the second moving plate (33).

7. A steel pipe cutting device based on numerical control machining technology according to claim 1, characterized in that: A third mounting bracket (14) is slidably connected to one side of the fixed seat (38). A second spring (32) is fixedly connected between one side of the third mounting bracket (14) and the fixed seat (38).

8. A steel pipe cutting device based on numerical control machining technology according to claim 6, characterized in that: A third spring (34) is fixedly connected between the bottom of the second moving plate (33) and the fixing bracket (2).

9. The steel pipe cutting equipment based on numerical control machining technology according to claim 1, characterized in that: A hydraulic cylinder (5) is fixedly connected to the top of the first mounting bracket (4). The output end of the hydraulic cylinder (5) is fixedly connected to the third mounting bracket (14).

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