Non-deformation cutting device for thin-wall metal product machining

Abstract

The invention belongs to the technical field of thin-wall pipe machining, and particularly relates to a deformation-free cutting device for thin-wall metal product machining. The cutting device comprises a machine table, a cutting saw body is assembled on one side of the upper end of the machine table, and a cutting disc is assembled in the cutting saw body; a first fixed clamping plate, a first movable clamping plate, a first supporting plate, a second fixed clamping plate, a second movable clamping plate and a second supporting plate are assembled at the upper end of the machine table, and the first fixed clamping plate, the first movable clamping plate and the first supporting plate are matched with one another and located at one end of the cutting disc. The pipe wall of the cutting position of the thin-wall metal square pipe is supported through the first supporting plate and the second supporting plate, and meanwhile the thin-wall metal square pipe is clamped through cooperation of the first fixed clamping plate, the first movable clamping plate, the second fixed clamping plate and the second movable clamping plate; and the deformation problems of sinking, warping, wrinkling and the like of the cut pipe wall caused by the fact that thermal stress and mechanical stress generated by cutting operation are extremely easy to act on the pipe wall are avoided.

Description

Technical Field

[0001] This invention belongs to the field of thin-walled tube processing technology, specifically relating to a deformation-free cutting device for processing thin-walled metal products. Background Technology

[0002] Thin-walled metal products, with their outstanding advantages such as light weight, high material utilization, and compact structure, are widely used in many high-end manufacturing fields such as aerospace, automotive manufacturing, rail transportation, and electronics. Thin-walled metal square tubes, as a typical example of thin-walled metal products, directly determine the assembly accuracy and reliability of the final product through their processing quality. Cutting is a core pre-process in the production of thin-walled metal square tubes, aiming to cut the tubes to the specified length according to actual application requirements, providing qualified blanks for subsequent bending, welding, and assembly processes. Therefore, achieving deformation-free processing during the cutting process and ensuring the dimensional accuracy and shape integrity of the cut tubes has become a core technical requirement that urgently needs to be addressed in the processing of thin-walled metal square tubes.

[0003] In the actual cutting process of thin-walled metal square tubes, due to their inherent characteristics of thin wall thickness and poor overall structural rigidity, the thermal and mechanical stresses generated during the cutting operation are easily applied to the tube wall, leading to deformation problems such as dents, warping, and wrinkles after cutting. Such deformations not only directly reduce the dimensional accuracy of the thin-walled metal square tubes, causing the tubes to fail to meet the requirements of subsequent processing and assembly, but may also cause the tubes to be scrapped directly, significantly increasing production losses and seriously affecting production efficiency and economic benefits. Although the industry currently uses advanced technologies such as laser cutting to replace traditional mechanical cutting to alleviate the deformation problem, laser cutting still has the defect of local high temperature causing residual thermal stress leading to micro-deformation. Moreover, the equipment purchase and maintenance costs are high, and when cutting tubes of special materials, problems such as slag and burrs are prone to occur at the cut, requiring additional grinding processes afterward, further increasing production complexity and costs, and failing to fundamentally solve the core pain point of deformation during the cutting of thin-walled metal square tubes.

[0004] In summary, the problem of cutting deformation remains a key bottleneck restricting the improvement of processing accuracy of thin-walled metal square tubes and hindering the high-quality development of the industry. Existing cutting technologies have failed to effectively overcome this core problem and generally suffer from additional defects such as high cost and limited application scenarios. Summary of the Invention

[0005] The purpose of this invention is to provide a deformation-free cutting device for processing thin-walled metal products. The device supports the wall of the thin-walled metal square tube at the cutting point through a first support plate and a second support plate. At the same time, the thin-walled metal square tube is clamped by the cooperation of a first fixed clamping plate, a first movable clamping plate, a second fixed clamping plate, and a second movable clamping plate. This avoids the thermal and mechanical stress generated during the cutting operation from easily acting on the tube wall, which would cause deformation problems such as dents, warping, and wrinkles in the cut tube wall.

[0006] The specific technical solution adopted by this invention is as follows: A deformation-free cutting device for processing thin-walled metal products includes a machine base. A cutting saw body is rotatably mounted on one side of the upper end of the machine base. A disc cutter is installed inside the cutting saw body. The cutting saw body is configured to drive the disc cutter to rotate at high speed. A first fixed clamping plate, a first movable clamping plate, a first support plate, a second fixed clamping plate, a second movable clamping plate, and a second support plate are mounted on the upper end of the machine base. The first fixed clamping plate, the first movable clamping plate, and the first support plate are mutually adapted and located at one end of the disc cutter. The second fixed clamping plate, the second movable clamping plate, and the second support plate are mutually adapted and located at the other end of the disc cutter. The device also includes: Multiple first positioning components are mounted on the top of the machine tool and located between the first fixed clamping plate and the first movable clamping plate, and the first positioning components are connected to the first support plate. The second positioning component is mounted on the top of the machine tool and located between the second fixed clamping plate and the second movable clamping plate, and the second positioning component is connected to the second support plate. When the thin-walled metal square tube is cut by the disc cutter, the first support plate and the second support plate can respectively support the inner wall of the metal square tube at both ends of the cut, and the dimensions of the first support plate and the second support plate are adapted to the inner wall dimensions of the thin-walled metal square tube.

[0007] In a preferred embodiment, the first fixed clamping plate and the first movable clamping plate are respectively adapted to a plurality of first positioning components. The first positioning component includes a horizontal arm, a plurality of rollers, a first housing and a second housing. The horizontal arm is fixed to the end of the first support plate away from the second support plate. The rollers are rotatably connected to the inside of the horizontal arm. The first housing is fixed to the inside of the horizontal arm. The second housing is fixed to the inside of the first fixed clamping plate or the first movable clamping plate. The first housing and the second housing are adapted to each other. The inside of the first housing and the second housing is equipped with a magnetic alignment unit, and the magnetic alignment units inside the first housing and the second housing attract each other.

[0008] In a preferred embodiment, the magnetic alignment unit includes multiple positioning magnets and multiple arc-shaped alignment magnets. The multiple positioning magnets are fixed in a straight line to the upper and lower ends of the first or second housing, and the multiple arc-shaped alignment magnets are fixed in an S-shape to the inside of the first or second housing. The installation directions of two adjacent positioning magnets are opposite, and the installation directions of two adjacent arc-shaped alignment magnets are also opposite.

[0009] In a preferred embodiment, the positioning magnet and the arc-shaped alignment magnet are both of the following types: neodymium iron boron magnet, samarium cobalt magnet, alnico magnet, and ferrite magnet.

[0010] In a preferred embodiment, the first housing and the second housing are made of any one of the following materials: ABS, PP, PE or other non-metallic insulating materials.

[0011] In a preferred embodiment, the second positioning component includes an adjusting cylinder, a guide rail, and a guide slider. The adjusting cylinder and the guide rail are both fixed to one end of the top of the machine base. The guide slider is slidably connected to the top of the guide rail. The adjusting cylinder and the guide slider are fixedly connected. A base is fixed to the upper end of the guide slider. A bearing seat is rotatably connected to one side of the top of the base via a ball bearing. A shaft is rotatably connected to the inside of the bearing seat via a pin. The shaft is fixedly connected to a second support plate.

[0012] In a preferred embodiment, a positioning plate is fixed to the top of the base and at the end of the shaft seat near the second support plate, and the shaft and the positioning plate are adapted to each other.

[0013] In a preferred embodiment, the first support plate and the thin-walled metal square tube, as well as the second support plate and the thin-walled metal square tube, are all clearance fits.

[0014] In a preferred embodiment, the upper end of the machine tool is equipped with a plurality of clamping cylinders, and the first movable clamping plate and the second movable clamping plate are respectively connected to the output ends of the plurality of clamping cylinders. The plurality of clamping cylinders can respectively drive the first movable clamping plate and the second movable clamping plate to move on the horizontal plane. The first fixed clamping plate and the machine tool and the second fixed clamping plate and the machine tool are fixedly connected, and the first movable clamping plate and the machine tool and the second movable clamping plate and the machine tool are slidably connected through the clamping cylinders.

[0015] The technical effects achieved by this invention are as follows: This invention provides support for the wall of the thin-walled metal square tube at the cut point through a first support plate and a second support plate. Simultaneously, the thin-walled metal square tube is clamped by the cooperation of a first fixed clamping plate, a first movable clamping plate, a second fixed clamping plate, and a second movable clamping plate. This avoids the thermal and mechanical stresses generated during the cutting process from easily acting on the tube wall, leading to deformation problems such as dents, warping, and wrinkles after cutting. It effectively improves the dimensional accuracy of the thin-walled metal square tube after cutting, reduces the scrap rate, decreases production losses, and increases production efficiency and economic benefits. Furthermore, the lower thermal stress avoids potential problems such as slag buildup and burrs at the cut, eliminating the need for subsequent grinding processes and simplifying the production flow. This invention achieves rapid and accurate alignment of the first support plate during the support process by mutual adsorption of two magnetic alignment units in the same first positioning component, ensuring that the relative positions of the disc cutter, the first fixed clamping plate, the first movable clamping plate and the first support plate remain unchanged, and ensuring that the first support plate can provide effective support for the pipe wall at the cutting point. This invention, through the cooperation of a base, a shaft seat, and a shaft, allows for convenient removal of the product after cutting by rotating the shaft. At the same time, the positioning plate provides support and guidance, enabling the shaft to quickly and accurately return to its original position. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is the present invention. Figure 1 A magnified view of a portion of point A in the middle; Figure 3 This is an assembly diagram of the first fixed clamping plate, the first movable clamping plate, the first support plate, and the first positioning component of the present invention. Figure 4 This is an exploded structural diagram of the first fixed clamping plate, the first movable clamping plate, the first support plate, and the first positioning component of the present invention. Figure 5 This is a schematic diagram of the structure of the first positioning component of the present invention; Figure 6 This is a schematic diagram of the structure of the first housing of the present invention; Figure 7 This is a schematic diagram of the internal structure of the first housing of the present invention; Figure 8 This is a schematic diagram showing the distribution of the positioning magnet and the arc-shaped alignment magnet of the present invention; Figure 9 This is a schematic diagram of the structure of the second positioning component of the present invention; Figure 10 This is an exploded view of the structure of the second positioning component of the present invention; Figure 11 This is a schematic diagram of the structure of the base of the present invention; Figure 12 This is a schematic diagram of the support provided by the first and second support plates of the present invention for the thin-walled metal square tube.

[0017] The attached diagram lists the components represented by each number as follows: 10. Machine base; 11. Cutting saw body; 12. Circular blade; 13. First fixed clamping plate; 14. First moving clamping plate; 15. First support plate; 16. Second fixed clamping plate; 17. Second moving clamping plate; 18. Second support plate; 19. Clamping cylinder; 20. First positioning component; 21. Horizontal arm; 22. Roller; 23. First housing; 24. Second housing; 25. Positioning magnet; 26. Arc-shaped alignment magnet; 30. Second positioning component; 31. Adjusting cylinder; 32. Guide slide rail; 33. Guide slider; 34. Base; 35. Shaft seat; 36. Shaft rod; 37. Positioning plate. Detailed Implementation

[0018] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0019] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0020] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in a preferred embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that mutually excludes other embodiments.

[0021] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0022] Please see the appendix Figures 1 to 2As shown, this is the first embodiment of the present invention. This embodiment provides a deformation-free cutting device for processing thin-walled metal products, applied to the cutting of thin-walled metal square tubes. It includes a machine base 10, with a cutting saw body 11 rotatably mounted on one side of the upper end of the machine base 10. A circular blade 12 is mounted inside the cutting saw body 11. The cutting saw body 11 is configured to drive the circular blade 12 to rotate at high speed. The upper end of the machine base 10 is equipped with a first fixed clamping plate 13, a first movable clamping plate 14, a first support plate 15, a second fixed clamping plate 16, a second movable clamping plate 17, and a second support plate 18. The first fixed clamping plate 13, the first movable clamping plate 14, and the first support plate 15 are mutually adapted and located at one end of the circular blade 12. The second fixed clamping plate 16, the second movable clamping plate 17, and the second support plate 18... The machine base 10 is equipped with multiple clamping cylinders 19 at its upper end, and the first movable clamping plate 14 and the second movable clamping plate 17 are respectively connected to the output ends of the multiple clamping cylinders 19. The multiple clamping cylinders 19 can drive the first movable clamping plate 14 and the second movable clamping plate 17 to move on the horizontal plane. The first fixed clamping plate 13 and the machine base 10 and the second fixed clamping plate 16 and the machine base 10 are fixedly connected. The first movable clamping plate 14 and the machine base 10 and the second movable clamping plate 17 and the machine base 10 are slidably connected through the clamping cylinders 19. Multiple L-shaped support plates are fixed inside the machine base 10 and at the lower end of the first support plate 15. The first support plate 15 and the second support plate 18 are respectively adapted to the multiple L-shaped support plates. The machine base 10 also includes: Multiple first positioning components 20 are mounted on the top of the machine base 10 and located between the first fixed clamping plate 13 and the first movable clamping plate 14, and the first positioning components 20 are connected to the first support plate 15. The second positioning component 30 is mounted on the top of the machine base 10 and located between the second fixed clamping plate 16 and the second movable clamping plate 17, and the second positioning component 30 is connected to the second support plate 18. When the thin-walled metal square tube is cut by the disc cutter 12, the first support plate 15 and the second support plate 18 can respectively support the inner wall of the metal square tube at both ends of the cut, and the dimensions of the first support plate 15 and the second support plate 18 are adapted to the inner wall dimensions of the thin-walled metal square tube.

[0023] Here, the first support plate 15 and the thin-walled metal square tube, as well as the second support plate 18 and the thin-walled metal square tube, are all clearance fits.

[0024] Specifically, in this device, before cutting the thin-walled metal square tube, it is necessary to make or replace the first support plate 15 and the second support plate 18 of the corresponding size according to the inner wall size of the thin-walled metal square tube, so that the device can be applied to thin-walled metal square tubes with different inner wall sizes.

[0025] It should be noted that this device is only suitable for non-magnetic materials such as copper, copper alloys, aluminum, aluminum alloys, and austenitic stainless steel (such as 304 stainless steel and 316 stainless steel).

[0026] Furthermore, to better illustrate the working principle of this device, the thin-walled metal square tube being cut is simply referred to as the square tube, and the square tube portion that has been cut and meets production requirements is simply referred to as the product.

[0027] In this embodiment, when cutting the square tube, the square tube is placed on top of the machine base 10, between the first fixed clamping plate 13 and the first movable clamping plate 14, and between the first support plate 15 and the second support plate 18. The position of the square tube is adjusted according to production needs, and the first fixed clamping plate 13, the second fixed clamping plate 16, and the outer wall of the square tube are in contact. The clamping cylinder 19 is activated, which drives the first movable clamping plate 14 and the second movable clamping plate 17 to move closer to the first fixed clamping plate 13 until the first movable clamping plate 14, the second movable clamping plate 17, and the outer wall of the square tube are tightly in contact. The square tube is clamped by the cooperation of the first fixed clamping plate 13 and the first movable clamping plate 14, and the second fixed clamping plate 16 and the second movable clamping plate 17. The cutting saw body 11 is then activated, and the handle on the cutting saw body 11 is held to rotate the cutting saw body 11. The main body 11 of the cutting saw drives the disc cutter 12 to rotate and move closer to the square tube. When the disc cutter 12 contacts the square tube, the first fixed clamping plate 13, the first movable clamping plate 14, the first support plate 15, the second fixed clamping plate 16, the second movable clamping plate 17, and the second support plate 18 work together to support and clamp the tube walls at both ends of the cutting point. This prevents the disc cutter 12 from causing deformation problems such as dents, warping, and wrinkles in the tube walls during the cutting process. After the cutting is completed, the product is removed from the outside of the second positioning component 30, and the second positioning component 30 is reset. The square tube is then pushed to move to the outside of the second support plate 18 and into a suitable position for further cutting. Compared with laser cutting technology, the relatively low heat generated during the cutting process of the square tube by the disc cutter 12 can avoid problems such as residual heat stress, slag, burrs, and high costs.

[0028] Secondly, please refer to again Figures 3 to 8The first fixed clamping plate 13 and the first movable clamping plate 14 are respectively adapted to multiple first positioning components 20. The first positioning component 20 includes a horizontal arm 21, multiple rollers 22, a first housing 23 and a second housing 24. The horizontal arm 21 is fixed to the end of the first support plate 15 away from the second support plate 18. The rollers 22 are rotatably connected to the inside of the horizontal arm 21. The first housing 23 is fixed to the inside of the horizontal arm 21. The second housing 24 is fixed to the inside of the first fixed clamping plate 13 or the first movable clamping plate 14, and the first housing 23 and the second housing 24 are adapted to each other. The inside of the first housing 23 and the second housing 24 are equipped with magnetic alignment units, and the magnetic alignment units inside the first housing 23 and the second housing 24 attract each other.

[0029] It should be noted that in this embodiment, the number of first positioning components 20 is set to two, and the two first positioning components 20 are respectively assembled between the first support plate 15 and the first fixed clamping plate 13 and between the first support plate 15 and the first movable clamping plate 14. In this embodiment, unless otherwise specified, the cross arm 21, roller 22, first housing 23, second housing 24 and magnetic alignment unit are all located inside the same first positioning component 20.

[0030] In this embodiment, when cutting the square tube, after placing the horizontal arm 21 and the first support plate 15 inside the square tube in sequence, the square tube is placed horizontally on the top of the machine base 10 and located between the first fixed clamping plate 13 and the first movable clamping plate 14. The square tube is pushed, causing it to move towards the second support plate 18 until it moves to the outside of the second support plate 18. Through the action of the magnetic alignment units inside the first housing 23 and the second housing 24, when the square tube is pushed towards the second support plate 18, the first support plate 15, the horizontal arm 21, the roller 22, and the first housing 23 interact with each other relative to the first fixed clamping plate 13 and the second housing 24. Maintaining relative stillness, that is, the first support plate 15 remains relatively still on the horizontal plane relative to the disc cutter 12. When the cutting saw body 11 drives the disc cutter 12 to cut the square tube, the cooperation of the first fixed clamping plate 13, the first moving clamping plate 14 and the first support plate 15 form support and limit on the inner wall of the end near the first fixed clamping plate 13 at the cutting point. At the same time, after a single cut is completed, the square tube continues to be pushed. Under the action of the magnetic alignment unit, the roller 22 rolls on the inner wall of the first support plate 15, causing the cross arm 21 to move relatively inside the first support plate 15, while keeping the relative position of the first support plate 15 and the disc cutter 12 unchanged, thus effectively supporting the subsequent cuts.

[0031] Secondly, please refer to the following as well. Figures 6 to 8The magnetic alignment unit includes multiple positioning magnets 25 and multiple arc-shaped alignment magnets 26. The multiple positioning magnets 25 are fixed in a straight line to the upper and lower ends of the first housing 23 or the second housing 24. The multiple arc-shaped alignment magnets 26 are fixed in an S-shape to the inside of the first housing 23 or the second housing 24. The installation directions of two adjacent positioning magnets 25 are opposite, and the installation directions of two adjacent arc-shaped alignment magnets 26 are opposite.

[0032] It should be noted that by adjusting the installation direction of the positioning magnet 25 and the arc-shaped alignment magnet 26, it is ensured that when the first housing 23 and the second housing 24 are close to each other, the two magnetic alignment units inside them can attract each other.

[0033] Furthermore, the positioning magnet 25 and the arc-shaped alignment magnet 26 are both of the following types: neodymium iron boron magnet, samarium cobalt magnet, alnico magnet, ferrite magnet. In this embodiment, the positioning magnet 25 and the arc-shaped alignment magnet 26 are preferably samarium cobalt magnets.

[0034] In this embodiment, the cooperation of multiple positioning magnets 25 enables two magnetic alignment units located inside the first housing 23 and the second housing 24 to attract each other, thereby keeping the first fixed clamping plate 13, the first movable clamping plate 14 and the first support plate 15 in a relatively static state. The cooperation of multiple arc-shaped alignment magnets 26 enables the position of the cross arm 21 relative to the first fixed clamping plate 13 or the first movable clamping plate 14 to be corrected, ensuring that the relative positions of the first fixed clamping plate 13, the first movable clamping plate 14 and the first support plate 15 remain unchanged.

[0035] In a preferred embodiment, the first housing 23 and the second housing 24 are made of any one of the following materials: ABS, PP, PE or other non-metallic insulating materials. In this embodiment, the first housing 23 and the second housing 24 are preferably made of PP. The end of the second housing 24 near the first housing 23 is flush with the end of the first fixed clamping plate 13 near the first movable clamping plate 14. The end of the first housing 23 near the second housing 24 is flush with the end of the cross arm 21 away from the roller 22. The ends of the first housing 23 and the second housing 24 that are close to each other are both smoothed.

[0036] In this embodiment, the selection of non-metallic insulating materials ensures that the magnetic alignment units located inside the first housing 23 and the second housing 24 can stably generate magnetic fields and interact with each other, avoiding interference or shielding of the magnetic field by metallic materials. This ensures the adsorption accuracy and stability of the magnetic alignment units. At the same time, PP material has good corrosion resistance and mechanical strength, which can maintain structural stability during long-term use and is not easily deformed due to friction or environmental factors, further improving the reliability and service life of the device. In addition, the smoothing treatment of the ends of the first housing 23 and the second housing 24 that are close to each other can not only effectively prevent the surface of the square tube from being scratched during movement, but also reduce the frictional resistance between the square tube and the components, making the pushing of the square tube smoother and helping to improve the efficiency of the cutting operation and the quality of the finished product.

[0037] Please refer to it again. Figures 9 to 10 The second positioning component 30 includes an adjusting cylinder 31, a guide rail 32, and a guide slider 33. The adjusting cylinder 31 and the guide rail 32 are both fixed to one end of the top of the machine base 10. The guide slider 33 is slidably connected to the top of the guide rail 32. The adjusting cylinder 31 and the guide slider 33 are fixedly connected. A base 34 is fixed to the upper end of the guide slider 33. A bearing 35 is rotatably connected to one side of the top of the base 34 through a ball bearing. A shaft 36 is rotatably connected to the inside of the bearing 35 through a pin. The shaft 36 and the second support plate 18 are fixedly connected by at least two screws.

[0038] In this embodiment, when cutting the square tube, after placing the cross arm 21 and the first support plate 15 inside the square tube in sequence, the square tube is placed horizontally on the top of the machine base 10 and positioned between the first fixed clamping plate 13 and the first movable clamping plate 14. The square tube is pushed, causing it to move towards the second support plate 18 until it moves to the outside of the second support plate 18. The square tube is then pushed to a suitable position, and the clamping cylinder 19 is activated. The clamping cylinder 19 drives the first movable clamping plate 14 and the second movable clamping plate 17 to move towards the square tube until the first movable clamping plate 14, the second movable clamping plate 17, and the square tube are tightly fitted together. The first fixed clamping plate 13, the first movable clamping plate 14, the first support plate 15, the second fixed clamping plate 16, the second movable clamping plate 17, and the second support plate 18 are then used to cut the square tube. The cooperation of plate 18 and the closing of the square tube form support and clamping. Start the cutting saw body 11 to drive the disc cutter 12 to rotate. Hold the handle on the cutting saw body 11 to make the cutting saw body 11 rotate and drive the disc cutter 12 to move closer to the square tube. The disc cutter 12 cuts the square tube. During the cutting process, the first support plate 15 and the second support plate 18 provide support for the inner tube walls at both ends of the cut, avoiding tube wall deformation during the cutting process. After the cutting is completed, rotate the shaft 36 upward, so that the shaft 36 drives the product to rotate around the center of the pin in the vertical plane. Push the shaft 36 again, so that the shaft 36 drives the product to rotate around the axis of the shaft seat 35 in the horizontal plane. The product can then be removed. After resetting the shaft 36, continue to push the square tube to perform subsequent cutting.

[0039] Please refer to it again. Figure 10 and Figure 11 A positioning plate 37 is fixed on the top of the base 34 and at the end of the bearing 35 near the second support plate 18. The positioning plate 37 has an arc-shaped groove inside, and the shaft 36 and the positioning plate 37 are compatible.

[0040] In this embodiment, the arc-shaped groove inside the positioning plate 37 can position the shaft 36, ensuring that the central axis of the shaft 36 and the moving direction of the square tube are the same before cutting the square tube, so that the square tube can move smoothly to the outside of the second support plate 18 and the shaft 36.

[0041] In one specific embodiment, the specific dimensions of the first support plate 15 and the second support plate 18 need to be made according to the internal dimensions of the product, and when cutting square tubes of different sizes, only the first support plate 15 and the second support plate 18 of the corresponding dimensions need to be replaced or made.

[0042] In another specific embodiment, when the length of the product is greater than the length of the shaft 36, a longer shaft 36 can be replaced according to the length of the product. In this case, in order to ensure that the projection distance between the disc cutter 12 and the second support plate 18 on the horizontal plane remains unchanged, the adjusting cylinder 31 can be activated. By adjusting the cylinder 31, the base 34 and the guide slider 33 can be driven to slide synchronously along the guide rail 32, thereby adjusting the position of the second support plate 18 and ensuring that the projection distance between the second support plate 18 and the disc cutter 12 on the horizontal plane remains unchanged.

[0043] The working principle of this invention is as follows: Please see Figure 12 As shown, when cutting the square tube, after placing the horizontal arm 21 and the first support plate 15 inside the square tube in sequence, the square tube is placed horizontally on the top of the machine base 10 and located between the first fixed clamping plate 13 and the first movable clamping plate 14. The square tube is pushed so that it moves to the outside of the second support plate 18 until the square tube moves to the appropriate position. During the movement of the square tube, the two magnetic alignment units located inside the first housing 23 and the second housing 24 can stably generate magnetic fields and interact with each other, so that the disc cutter 12, the first fixed clamping plate 13, the first support plate 15, the horizontal arm 21, the roller 22, the first housing 23 and the second housing 24 remain relatively stationary. The clamping cylinder 19 is activated, which drives the first movable clamping plate 14 and the second movable clamping plate 17 to move and clamp the square tube. The cooperation of clamping plate 14, first support plate 15, second fixed clamping plate 16, second movable clamping plate 17, and second support plate 18 forms support and clamping on the wall of the square tube. When the cutting saw body 11 is started, the circular cutter 12 drives the cutting saw body 11 to cut the square tube. The cooperation of the first support plate 15 and the second support plate 18 forms support on the inner walls at both ends of the cut, avoiding deformation of the square tube during the cutting process. After the cutting is completed, the clamping cylinder 19 moves in the opposite direction, so that the first movable clamping plate 14 and the second movable clamping plate 17 are no longer tightly attached to the tube wall. Rotate the shaft 36 to a suitable position, and the product can be removed from the outside of the shaft 36. After the shaft 36 is reset with the positioning plate 37 as support, the square tube is pushed to a suitable position. During the pushing process, the first support plate 15 can be kept relatively stationary by the magnetic alignment unit.

[0044] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention are implemented according to conventional methods in the art unless otherwise specified or limited.

Claims

1. A deformation-free cutting device for processing thin-walled metal products, characterized in that: The system includes a machine base (10), on one side of the upper end of which a cutting saw body (11) is mounted. A disc cutter (12) is mounted inside the cutting saw body (11). The upper end of the machine base (10) is equipped with a first fixed clamping plate (13), a first movable clamping plate (14), a first support plate (15), a second fixed clamping plate (16), a second movable clamping plate (17), and a second support plate (18). The first fixed clamping plate (13), the first movable clamping plate (14), and the first support plate (15) are mutually adapted and located at one end of the disc cutter (12). The second fixed clamping plate (16), the second movable clamping plate (17), and the second support plate (18) are mutually adapted and located at the other end of the disc cutter (12). The system also includes: Multiple first positioning components (20) are mounted on the top of the machine base (10) and located between the first fixed clamping plate (13) and the first movable clamping plate (14), and the first positioning components (20) are connected to the first support plate (15); The second positioning component (30) is mounted on the top of the machine base (10) and located between the second fixed clamping plate (16) and the second movable clamping plate (17), and the second positioning component (30) is connected to the second support plate (18); When the thin-walled metal square tube is cut by the disc cutter (12), the first support plate (15) and the second support plate (18) can support the inner wall of the metal square tube at both ends of the cut, and the dimensions of the first support plate (15) and the second support plate (18) are adapted to the inner wall dimensions of the thin-walled metal square tube.

2. The non-deformation cutting device for processing thin-walled metal products according to claim 1, characterized in that: The first fixed clamping plate (13) and the first movable clamping plate (14) are respectively adapted to a plurality of first positioning components (20). The first positioning component (20) includes a horizontal arm (21), a plurality of rollers (22), a first housing (23) and a second housing (24). The horizontal arm (21) is fixed to the end of the first support plate (15) away from the second support plate (18). The rollers (22) are rotatably connected to the inside of the horizontal arm (21). The first housing (23) is fixed to the inside of the horizontal arm (21). The second housing (24) is fixed to the inside of the first fixed clamping plate (13) or the first movable clamping plate (14). The first housing (23) and the second housing (24) are adapted to each other. The first housing (23) and the second housing (24) are both equipped with magnetic alignment units. The magnetic alignment units inside the first housing (23) and the second housing (24) attract each other.

3. The non-deformation cutting device for processing thin-walled metal products according to claim 2, characterized in that: The magnetic alignment unit includes multiple positioning magnets (25) and multiple arc-shaped alignment magnets (26). The multiple positioning magnets (25) are fixed in a straight line at the upper and lower ends inside the first housing (23) or the second housing (24), and the multiple arc-shaped alignment magnets (26) are fixed in an S-shape inside the first housing (23) or the second housing (24).

4. The non-deformation cutting device for processing thin-walled metal products according to claim 2, characterized in that: The first housing (23) and the second housing (24) are made of any one of the following materials: ABS, PP, PE.

5. The non-deformation cutting device for processing thin-walled metal products according to claim 1, characterized in that: The second positioning component (30) includes an adjusting cylinder (31), a guide rail (32), and a guide slider (33). The adjusting cylinder (31) and the guide rail (32) are both fixed to one end of the top of the machine base (10). The guide slider (33) is slidably connected to the top of the guide rail (32). The adjusting cylinder (31) and the guide slider (33) are fixedly connected. A base (34) is fixed to the upper end of the guide slider (33). A shaft seat (35) is rotatably connected to one side of the top of the base (34). A shaft rod (36) is rotatably connected inside the shaft seat (35), and the shaft rod (36) is fixedly connected to the second support plate (18).

6. The non-deformation cutting device for processing thin-walled metal products according to claim 5, characterized in that: A positioning plate (37) is fixed at the top of the base (34) and at one end of the bearing seat (35) near the second support plate (18), and the shaft (36) and the positioning plate (37) are adapted to each other.

7. The non-deformation cutting device for processing thin-walled metal products according to claim 1, characterized in that: The first support plate (15) and the thin-walled metal square tube, as well as the second support plate (18) and the thin-walled metal square tube, are all clearance fits.

8. The non-deformation cutting device for processing thin-walled metal products according to claim 1, characterized in that: The upper end of the machine base (10) is equipped with multiple clamping cylinders (19), and the first movable clamping plate (14) and the second movable clamping plate (17) are respectively connected to the multiple clamping cylinders (19). The multiple clamping cylinders (19) can respectively drive the first movable clamping plate (14) and the second movable clamping plate (17) to move on the horizontal plane. The first fixed clamping plate (13) and the machine base (10) and the second fixed clamping plate (16) and the machine base (10) are all fixedly connected. The first movable clamping plate (14) and the machine base (10) and the second movable clamping plate (17) and the machine base (10) are all slidably connected through the clamping cylinders (19).

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