A steel pipe cutting device based on numerical control machining technology

Abstract

The application discloses a steel pipe cutting equipment based on numerical control machining technology and relates to the technical field of steel pipe cutting. The steel pipe cutting equipment based on numerical control machining technology 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 through the cooperation structure of the unique first sliding groove, the second sliding groove, the connecting column and the moving block, can be suitable for the machining of steel pipes with various specifications, and greatly improves the universality and production efficiency of the equipment. The first electric telescopic rod drives the pressing plate to preliminarily fix the steel pipe on the first arc-shaped plate, then the third mounting frame is driven to move by the hydraulic cylinder, and through the transmission structures such as the first rack, the second gear, the first gear and the second rack, the secondary clamping and fixing of the clamping plate on the steel pipe is realized. The double fixing mode greatly enhances the stability of the steel pipe in the cutting process, effectively avoids the problem of cutting precision reduction caused by the displacement and vibration of the steel pipe, and reduces the scrap rate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of steel pipe cutting, in particular to a steel pipe cutting equipment based on numerical control machining technology. BACKGROUND

[0002] In modern industrial production, steel pipes are widely used in many fields such as construction, machinery manufacturing, petroleum and chemical industry, etc. as important basic materials. For example, in the construction industry, a large number of steel pipes of different specifications are needed for the steel structure frame of high-rise buildings, and the cutting precision directly affects the overall stability and safety of the building. In the field of petroleum and chemical industry, the machining precision and surface quality of steel pipes for conveying pipelines are related to the stable operation and safety of the entire chemical production system. With the advent of the Industry 4.0 era and the rapid development of intelligent manufacturing technology, the requirements for steel pipe machining precision and production efficiency in industrial production have reached an unprecedented level. With the continuous improvement of the requirements for steel pipe machining precision and production efficiency in various industries, steel pipe cutting processing has become a key link. The existing steel pipe cutting processing equipment is not stable enough in the fixing process, and the steel pipe is prone to displacement during cutting, which leads to a decrease in cutting precision, generates waste products and increases production costs. SUMMARY

[0003] In view of the deficiencies of the prior art, the present application provides a steel pipe cutting equipment based on numerical control machining technology to solve the problems raised in the background art.

[0004] The existing steel pipe cutting processing equipment is not stable enough in the fixing process, and the steel pipe is prone to displacement during cutting, which leads to a decrease in cutting precision, generates waste products and increases production costs.

[0005] To achieve the above purpose, the present application is realized by the following technical scheme:

[0006] The application discloses a steel pipe cutting equipment based on numerical control machining technology, which comprises a base, a fixed frame is fixedly connected to the top of the base, a first mounting frame is slidably connected in the fixed frame, a mounting seat is fixedly connected to the inside of the base, a connecting plate is slidably connected to the inside of the mounting seat, a second sliding groove penetrating through the surface of the connecting plate is formed in the center of one side of the connecting plate, first sliding grooves are symmetrically formed in the surface of one side of the connecting plate and located outside the second sliding groove, 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 second sliding groove and the first sliding groove are slidably connected with the connecting column, a second mounting plate is fixedly connected to the inside of the base, a first mounting plate is slidably connected to the inside of the base and located outside the second mounting plate, the bottom of the first mounting plate and the second mounting plate is fixedly connected with the moving block, first arc-shaped plates are fixedly connected to the top of the first mounting plate and the second mounting plate, second arc-shaped plates are fixedly connected to the top of one end of the first mounting plate and the second mounting plate, clamping plates are symmetrically slidably connected to the inside of the second arc-shaped plates, a fixing seat is fixedly connected to the inside of the first mounting frame, a third mounting frame is slidably connected to one side of the fixing seat, a first motor is fixedly connected to the inside of the third mounting frame, and a cutting knife is fixedly connected to the output end of the first motor.

[0007] Preferably, support frames are symmetrically fixedly connected to the top of the second arc-shaped plates, first gears are rotatably connected to one side of the support frames, second gears are rotatably connected to one side of the first gears, first racks are slidably connected to the inside of the support frames, one side of the first racks is meshedly connected with the second gears, second racks are slidably connected to the inside of the support frames, one side of the second racks is meshedly connected with the first gears, and one side of the second racks is fixedly connected with the clamping plates.

[0008] Preferably, second sliding rods are fixedly connected to the inside of the second arc-shaped plates, one side of the second sliding rods is slidably connected with the clamping plates, first springs are fixedly connected between one side of the clamping plates and the second arc-shaped plates, one side of the mounting seat is fixedly connected with a second electric telescopic rod, and one end of the second electric telescopic rod is fixedly connected with 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 to the inside of 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, and the output end of the first electric telescopic rod is fixedly connected with the first moving plate through the bottom of the second mounting frame.

[0010] Preferably, a screw rod is rotatably connected to the inside of the fixed frame, the outside of the screw rod is threadedly connected with the first mounting frame, one side of the fixed frame is fixedly connected with a second motor, and one end of the screw rod is fixedly connected with the output end of the second motor.

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

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

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

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

[0015] The application provides a steel pipe cutting equipment based on numerical control machining technology.

[0016] 1. The steel pipe cutting equipment based on numerical control machining technology 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 through the cooperation structure of the unique first sliding groove, the second sliding groove, the connecting column and the moving block, without complex manual debugging, and can be suitable for the machining of steel pipes of various specifications, greatly improving the universality and production efficiency of the equipment.

[0017] 2. The steel pipe cutting equipment based on numerical control machining technology can preliminarily fix the steel pipe on the first arc-shaped plate through the first electric telescopic rod and the pressing plate, and then realize the secondary clamping and fixing of the steel pipe by the clamping plate through the transmission structure of the first rack, the second gear, the first gear and the second rack during the movement of the third mounting frame driven by the hydraulic cylinder, which greatly enhances the stability of the steel pipe during cutting, effectively avoids the problem of cutting precision reduction caused by displacement and vibration of the steel pipe, and greatly reduces the scrap rate.

[0018] 3. The steel pipe cutting equipment based on numerical control machining technology can automatically loosen the fixing of the cut steel pipe through the design of the second moving plate reset by the third spring and the clamping plate reset by the first spring after cutting, which is convenient for workers to collect and process, further improves the convenience and automation degree of equipment operation, and promotes the development of steel pipe cutting machining towards high efficiency, intelligence and precision. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a three-dimensional structure schematic diagram of the application.

[0020] Figure 2 is a schematic view of the bottom structure of the present application;

[0021] Figure 3 is a schematic view of the side view of the present application;

[0022] Figure 4 is a schematic view of the internal structure of the present application;

[0023] Figure 5 is a schematic view of the second mounting frame structure of the present application;

[0024] Figure 6 is a schematic view of the second arc-shaped plate structure of the present application;

[0025] Figure 7 is a schematic view of the mounting seat structure of the present application;

[0026] Figure 8 is a schematic view of the enlarged structure at the part A of the present application; Figure 3

[0027] Figure 9 is a schematic view of the enlarged structure at the part B of the present application. Figure 3

[0028] In the figure: 1, base; 2, fixing frame; 3, screw rod; 4, first mounting frame; 5, hydraulic cylinder; 6, mounting seat; 7, first electric telescopic rod; 8, second mounting frame; 9, first moving plate; 10, pressing plate; 11, first mounting plate; 12, first arc-shaped plate; 13, first sliding rod; 14, third mounting frame; 15, cutting knife; 16, first motor; 17, second motor; 18, connecting plate; 19, first sliding groove; 20, second sliding groove; 21, moving block; 22, connecting column; 23, second electric telescopic rod; 24, second arc-shaped plate; 25, first spring; 26, clamping plate; 27, supporting 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 DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0030] Please refer to Figures 1 to 9 ​​The application provides a technical scheme: a steel pipe cutting equipment based on numerical control machining technology, which comprises a base 1, a fixed frame 2 fixedly connected to one end of the top of the base 1, a first mounting frame 4 slidingly connected in the fixed frame 2, a mounting seat 6 fixedly connected to the inside of the base 1, a connecting plate 18 slidingly connected to the inside of the mounting seat 6, the connecting plate 18 moving along the inside of the mounting seat 6, a second sliding groove 20 passing through the surface of the connecting plate 18 and symmetrically arranged on one side of the connecting plate 18, a first sliding groove 19 symmetrically arranged on the surface of the connecting plate 18 and located outside the second sliding groove 20, the first sliding groove 19 being inclined, a moving block 21 slidingly connected to the top of the mounting seat 6, the moving block 21 being provided in three groups, a connecting column 22 fixedly connected to the top of the moving block 21, the connecting plate 18 moving with the connecting column 22, the second sliding groove 20 and the first sliding groove 19 being slidingly connected with the connecting column 22, when the connecting plate 18 moves with the second sliding groove 20 and the first sliding groove 19, the first sliding groove 19 moves with two groups of moving blocks 21 through the connecting column 22, and the second sliding groove 20 moves along the outside of the other group of connecting columns 22, a second mounting plate 36 fixedly connected to the inside of the base 1, a first mounting plate 11 slidingly connected to the inside of the base 1 and located outside the second mounting plate 36, the bottom of the first mounting plate 11 and the second mounting plate 36 being fixedly connected with the moving block 21, the moving block 21 moving with the two groups of first mounting plates 11, the distance between the first mounting plate 11 and the second mounting plate 36 being adjusted according to the diameter of the steel pipe, the top of the first mounting plate 11 and the second mounting plate 36 being fixedly connected with a first arc-shaped plate 12, the first mounting plate 11 and the second mounting plate 36 moving with the first arc-shaped plate 12, the steel pipe being placed on the top of the first arc-shaped plate 12, one end of the top of the first mounting plate 11 and the second mounting plate 36 being fixedly connected with a second arc-shaped plate 24, the second arc-shaped plate 24 being provided in three groups, the three groups of second arc-shaped plates 24 being staggered, the second arc-shaped plates 24 being prevented from colliding with each other when the two groups of second mounting plates 36 contact the first mounting plate 11, the inside of the second arc-shaped plate 24 being symmetrically slidingly connected with a clamping plate 26, the clamping plate 26 moving along the top of the second arc-shaped plate 24, the steel pipe being fixed, and the steel pipe being prevented from moving during cutting to affect the cutting accuracy, the inside of the first mounting frame 4 being fixedly connected with a fixing seat 38, the first mounting frame 4 moving with the fixing seat 38, one side of the fixing seat 38 being slidingly connected with a third mounting frame 14, the inside of the third mounting frame 14 being fixedly connected with a first motor 16, the output end of the first motor 16 being fixedly connected with a cutting knife 15, the third mounting frame 14 moving with the first motor 16, the first motor 16 rotating with the cutting knife 15 after being turned on, and the steel pipe being cut.

[0031] Further, the top of the second arc-shaped plate 24 is fixedly connected with a support frame 27, one side of the support frame 27 is rotatably connected with a first gear 29, one side of the first gear 29 is rotatably connected with a second gear 30, the second gear 30 rotates with the first gear 29, the inside of the support frame 27 is slidably connected with a first rack 28, one side of the first rack 28 is meshedly connected with the second gear 30, the first rack 28 moves with the second gear 30 to rotate, the inside of the support frame 27 is slidably connected with a second rack 31, one side of the second rack 31 is meshedly connected with the first gear 29, the first gear 29 rotates with the second rack 31 to move, one side of the second rack 31 is fixedly connected with the clamping plate 26, the second rack 31 moves with the clamping plate 26 to move, and the steel pipe is clamped and fixed.

[0032] Further, the inside of the second arc-shaped plate 24 is fixedly connected with a second sliding rod 35, the outside of the second sliding rod 35 is slidably connected with the clamping plate 26, one side of the clamping plate 26 and the second arc-shaped plate 24 are fixedly connected with a first spring 25, the clamping plate 26 moves along the outside of the second sliding rod 35 to press the first spring 25, the first spring 25 generates elastic force after being pressed, and when the first spring 25 loses the pressing force, under the action of the elastic force, the first spring 25 restores to the original position with the clamping plate 26, one side of the mounting seat 6 is fixedly connected with a second electric telescopic rod 23, one end of the second electric telescopic rod 23 is fixedly connected with one end of the connecting plate 18, and the second electric telescopic rod 23 moves with the connecting plate 18 after being opened.

[0033] Further, one end of the base 1 is fixedly connected with a second mounting frame 8, the inside of the second mounting frame 8 is slidably connected with a first moving plate 9, the first moving plate 9 moves along the inside of the second mounting frame 8, the bottom of the first moving plate 9 is fixedly connected with a pressing plate 10, the first moving plate 9 moves with the pressing plate 10 to move, and the bottom of the pressing plate 10 is arc-shaped, better matched with the top of the steel pipe, so that the steel pipe is fixed between the first arc-shaped plate 12 and the pressing plate 10, the top of the second mounting frame 8 is fixedly connected with a first electric telescopic rod 7, the output end of the first electric telescopic rod 7 penetrates through the bottom of the second mounting frame 8 and is fixedly connected with the first moving plate 9, and the first electric telescopic rod 7 moves with the first moving plate 9 after being opened.

[0034] Further, the inside of the fixed frame 2 is rotatably connected with a lead screw 3, the outside of the lead screw 3 is threadedly connected with the first mounting frame 4, the lead screw 3 moves with the first mounting frame 4 to rotate, one side of the fixed frame 2 is fixedly connected with a second motor 17, one end of the lead screw 3 penetrates through one side of the fixed frame 2 and is fixedly connected with the output end of the second motor 17, and the lead screw 3 rotates with the second motor 17 after being opened.

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

[0036] Further, the side of the third mounting frame 14 is fixedly connected with the fixed seat 38, and the second spring 32 is fixedly connected between the fixed seat 38 and the third mounting frame 14, the third mounting frame 14 moves to press the second spring 32, the second spring 32 generates elastic force after being pressed, and the second spring 32 restores to the original position with the third mounting frame 14 under the action of the elastic force when the second spring 32 loses the pressing force.

[0037] Further, the bottom of the second moving plate 33 is fixedly connected with the fixed frame 2, and the third spring 34 is fixedly connected between the bottom of the second moving plate 33 and the fixed frame 2, the bottom of the second moving plate 33 is in contact with the first rack 28, the second moving plate 33 moves with the first rack 28, the second moving plate 33 moves to press the third spring 34, the third spring 34 generates elastic force after being pressed, and the third spring 34 restores to the original position with the second moving plate 33 under the action of the elastic force when the third spring 34 loses the pressing force.

[0038] Further, the top of the first mounting frame 4 is fixedly connected with the hydraulic cylinder 5, and the output end of the hydraulic cylinder 5 is fixedly connected with the third mounting frame 14, the hydraulic cylinder 5 moves with the third mounting frame 14 after being opened.

[0039] In use, when the steel pipe needs to be cut, first, according to the diameter of the steel pipe, the second electric telescopic rod 23 on one side of the mounting seat 6 is started, the second electric telescopic rod 23 is elongated or shortened, the connecting plate 18 is moved along the inside of the mounting seat 6, because the first sliding groove 19 on one side of the connecting plate 18 is inclined, and the second sliding groove 20 and the first sliding groove 19 are both slidingly connected with the connecting column 22, so when the connecting plate 18 moves, the first sliding groove 19 drives the two groups of moving blocks 21 to move through the connecting column 22, and the second sliding groove 20 moves along the outside of the other group of connecting columns 22, thereby driving the second mounting plate 36 fixedly connected with the moving blocks 21 to move, the position of the first mounting plate 11 remains unchanged, the distance between the first mounting plate 11 and the second mounting plate 36 is adjusted to adapt to the diameter of the steel pipe, after the steel pipe is placed on the top of the first arc-shaped plate 12, the first electric telescopic rod 7 on the top of the second mounting frame 8 is started, the first electric telescopic rod 7 drives the first moving plate 9 to move downward along the inside of the second mounting frame 8, thereby fixing the steel pipe between the first arc-shaped plate 12 and the bottom arc-shaped pressing plate 10, at the same time, the first mounting frame 4 is slidingly adjusted in the fixed frame 2 under the drive of the second motor 17 through the threaded connection with the screw rod 3, the position of the first mounting frame 4 is adjusted, the cutting knife 15 is aligned with the cutting position of the steel pipe, the hydraulic cylinder 5 is started, the third mounting frame 14 is moved with the hydraulic cylinder 5, the fixed seat 38 moves along the outside of the first sliding rod 13 with the movement of the third mounting frame 14, the width of the fixed seat 38 is greater than the width of the second moving plate 33, so that the fixed seat 38 drives the cutting knife 15 to move back and forth outside the second moving plate 33, the second moving plate 33 moves with the movement of the fixed seat 38, the second moving plate 33 moves downward, the second moving plate 33 contacts and drives the first rack 28 to move at the bottom, the first rack 28 is engaged with the second gear 30, thereby driving the second gear 30 to rotate, the second gear 30 drives the first gear 29 engaged therewith to rotate, the first gear 29 drives the second rack 31 to move, because one side of the second rack 31 is fixedly connected with the clamping plate 26, the clamping plate 26 moves along the second sliding rod 35, thereby realizing the secondary clamping and fixing of the steel pipe by the clamping plate 26, this double fixing mode greatly enhances the stability of the steel pipe in the cutting process, effectively avoids the problem of cutting precision decline caused by displacement and vibration of the steel pipe, and greatly reduces the scrap rate, at this time, the second moving plate 33 will not move again under the resistance, the third mounting frame 14 moves along one side of the fixed seat 38 and presses the second spring 32, the third mounting frame 14 drives the cutting knife 15 to gradually move downward, the first motor 16 is started, the cutting knife 15 is driven to rotate by the first motor 16, and the steel pipe is cut, after cutting is completed, the third mounting frame 14 moves upward with the hydraulic cylinder 5, at the same time, the third spring 34 connected between the second moving plate 33 and the fixed frame 2 loses the pressing force, and drives the second moving plate 33 to return to the original position under the action of the elastic force,When the second moving plate 33 loses the pressing, the first spring 25 will drive the clamp plate 26 to return to the original position, loosen the fixing of the cut steel pipe, and facilitate the staff to collect and process it.

[0040] Meanwhile, the contents not described in detail in the specification are all the prior art known to those skilled in the art.

[0041] It should be noted that, in this document, the terms such as first and second are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations. The statement "comprising a limited element" does not exclude the existence of other identical elements in the process, method, article or equipment including the element.

[0042] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A steel pipe cutting apparatus based on numerical control machining technology, comprising a base (1), characterized in that: The top end of the base (1) is fixedly connected with a fixing frame (2), the inside of the fixing frame (2) is slidably connected with a first mounting frame (4), the inside of the base (1) is fixedly connected with a mounting seat (6), the inside of the mounting seat (6) is slidably connected with a connecting plate (18), the center of one side of the connecting plate (18) is provided with a second sliding groove (20) penetrating through the surface thereof, the surface of one side of the connecting plate (18) and located outside the second sliding groove (20) is symmetrically provided with a first sliding groove (19), the top of the mounting seat (6) is slidably connected with a moving block (21), the top of the moving block (21) is fixedly connected with a connecting column (22), the inside of the second sliding groove (20) and the first sliding groove (19) is slidably connected with the connecting column (22), the inside of the base (1) is fixedly connected with a second mounting plate (36), the inside of the base (1) and located outside the second mounting plate (36) is slidably connected with a first mounting plate (11), the bottom of the first mounting plate (11) and the second mounting plate (36) is fixedly connected with the moving block (21), the top of the first mounting plate (11) and the second mounting plate (36) is fixedly connected with a first arc-shaped plate (12), one end of the top of the first mounting plate (11) and the second mounting plate (36) is fixedly connected with a second arc-shaped plate (24), the inside of the second arc-shaped plate (24) is symmetrically slidably connected with a clamping plate (26), the inside of the first mounting frame (4) is fixedly connected with a fixing seat (38), one side of the fixing seat (38) is slidably connected with a third mounting frame (14), the inside of the third mounting frame (14) is fixedly connected with a first motor (16), the output end of the first motor (16) is fixedly connected with a cutting knife (15); The top of the second arc-shaped plate (24) is fixedly connected with a supporting frame (27) symmetrically, one side of the supporting frame (27) is rotatably connected with a first gear (29), one side of the first gear (29) is rotatably connected with a second gear (30), the inside of the supporting frame (27) is slidably connected with a first rack (28), one side of the first rack (28) is meshedly connected with the second gear (30), the inside of the supporting frame (27) is slidably connected with a second rack (31), one side of the second rack (31) is meshedly connected with the first gear (29), one side of the second rack (31) is fixedly connected with the clamping plate (26); The inside of the second arc-shaped plate (24) is fixedly connected with a second sliding rod (35), the outside of the second sliding rod (35) is slidably connected with the clamping plate (26), the first spring (25) is fixedly connected between one side of the clamping plate (26) and the second arc-shaped plate (24), one side of the mounting seat (6) is fixedly connected with a second electric telescopic rod (23), one end of the second electric telescopic rod (23) is fixedly connected with one end of the connecting plate (18). One end top of the base (1) is fixedly connected with the second mounting bracket (8), the inside of the second mounting bracket (8) is slidably connected with the first moving plate (9), the bottom of the first moving plate (9) is fixedly connected with the pressing plate (10), the top of the second mounting bracket (8) is fixedly connected with the first electric telescopic rod (7), and the output end of the first electric telescopic rod (7) penetrates through the bottom of the second mounting bracket (8) and is fixedly connected with the first moving plate (9). The third mounting bracket (14) is fixedly connected with the fixed seat (38) and the second spring (32).

2. The steel pipe cutting apparatus based on numerical control machining technology according to claim 1, characterized in that: The inside of the fixed frame (2) is rotatably connected with the lead screw (3), the outside of the lead screw (3) is threadedly connected with the first mounting bracket (4), one side of the fixed frame (2) is fixedly connected with the second motor (17), and one end of the lead screw (3) penetrates through one side of the fixed frame (2) and is fixedly connected with the output end of the second motor (17).

3. The steel pipe cutting apparatus based on numerical control machining technology according to claim 1, characterized in that: The bottom of the first mounting bracket (4) is fixedly connected with the first sliding rod (13), and the inside of the fixed frame (2) is slidably connected with the second moving plate (33).

4. The steel pipe cutting apparatus based on numerical control machining technology according to claim 3, characterized in that: The bottom of the second moving plate (33) is fixedly connected with the fixed frame (2) and the third spring (34).

5. The steel pipe cutting apparatus based on numerical control machining technology according to claim 3, characterized in that: The top of the first mounting bracket (4) is fixedly connected with the hydraulic cylinder (5), and the output end of the hydraulic cylinder (5) is fixedly connected with the third mounting bracket (14).

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