Cutting device and cutting method for aluminum alloy frame tube

Abstract

The invention relates to the technical field of cutting, in particular to an aluminum alloy frame tube cutting device and a cutting method thereof.The aluminum alloy frame tube cutting device comprises a base, a saw blade cutting assembly used for cutting a to-be-machined workpiece is installed at the top of the base, adjusting seats are symmetrically arranged on the two sides of the saw blade cutting assembly, and a mover used for driving the two adjusting seats to move is installed on the base; the top of the base is provided with a supporting unit used for supporting a workpiece to be machined. The sides, close to each other, of the two adjusting bases are each provided with at least one clamping and rotating assembly. Each set of clamping and rotating assembly comprises two first arc-shaped plates, second arc-shaped plates are arranged on the sides, close to each other, of the two first arc-shaped plates correspondingly, and two second prisms penetrate through the first arc-shaped plates and the second arc-shaped plates correspondingly; according to the aluminum alloy frame pipe cutting device, the two ends of an aluminum alloy frame pipe can be clamped and fixed, workers do not need to hold the aluminum alloy frame pipe by hands, safety is improved, meanwhile, a plurality of aluminum alloy frame pipes can be annularly cut, and cutting efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of cutting, and particularly relates to a cutting device for an aluminum alloy frame tube and a cutting method thereof. Background Art

[0002] Aluminum alloy is an alloy with aluminum as the base and a certain amount of other alloying elements added. An aluminum alloy frame is made by welding multiple aluminum alloy tubes together. According to the assembly requirements, the aluminum alloy tubes need to be cut into different lengths by a cutting device.

[0003] It is found through prior art retrieval that a Chinese patent with the publication number CN116038027A discloses a cutting tool for aluminum alloy frame production. With the cooperation of a limit block, the staff slowly horizontally moves the aluminum alloy rod towards the rotating saw blade, and then the cutting operation on the aluminum alloy rod can be carried out.

[0004] However, it is worth considering that one end of the aluminum alloy tube needs to be held by the staff, and the staff drives the aluminum alloy tube to move towards the saw blade. Since the staff does not hold both ends of the aluminum alloy tube at the same time, after cutting, there is a risk that the unheld end of the aluminum alloy tube will be carried away by the rotating saw blade. If the staff holds both ends of the aluminum alloy tube at the same time, the staff is relatively close to the saw blade, which poses a certain danger.

[0005] Therefore, in order to solve the above problems, the emergence of a related facility that better meets the usage requirements is needed. Summary of the Invention

[0006] In view of this, the purpose of the present invention is to provide a cutting device for an aluminum alloy frame tube and a cutting method thereof, so as to solve the problems that there is a risk that the unheld aluminum alloy tube will be carried away by the rotating saw blade, and if the staff holds both ends of the aluminum alloy tube at the same time, the staff is relatively close to the saw blade.

[0007] Based on the above purpose, the present invention provides a cutting device for an aluminum alloy frame tube, including a base. A saw blade cutting assembly for cutting a workpiece to be processed is installed on the top of the base. Adjusting seats are symmetrically arranged on both sides of the saw blade cutting assembly. The base is equipped with a mover for driving the two adjusting seats to move. A supporting unit for supporting the workpiece to be processed is installed on the top of the base. At least one set of clamping and self-rotating assemblies is arranged on one side of each of the two adjusting seats close to each other; Each of the clamping and self-rotating assemblies includes two first arc-shaped plates. On the sides of the two first arc-shaped plates close to each other, second arc-shaped plates are respectively provided. Two second prisms penetrate through both the first arc-shaped plates and the second arc-shaped plates. The first arc-shaped plates and the second arc-shaped plates are respectively provided with stretching units adapted to the second prisms. The adjusting seat is provided with a meshing synchronous rotation mechanism for driving the first arc-shaped plates and the second arc-shaped plates to rotate synchronously, and the adjusting seat is provided with a spacing adjusting assembly for adjusting the spacing between the first arc-shaped plates and the second arc-shaped plates.

[0008] Optionally, the meshing synchronous rotation mechanism includes arc-shaped racks respectively and fixedly installed on the outer walls of the first arc-shaped plates and the second arc-shaped plates. On the side of the second arc-shaped plate facing the first arc-shaped plate, two clamping grooves are opened. On the side of the first arc-shaped plate facing the second arc-shaped plate, two clamping bars are fixedly connected, and the clamping bars are adapted to the clamping grooves. A number of annular grooves are opened on the adjusting seat, and the number of the annular grooves is the same as that of the first arc-shaped plates provided. The first arc-shaped plate is fixedly installed with a first guiding block adapted to the annular groove. The second arc-shaped plate is fixedly installed with a second guiding block located in the annular groove. A first sliding groove adapted to the first guiding block is opened on the inner wall of the annular groove, and the first guiding block is located in the first sliding groove. A guiding groove is opened on the first guiding block, and a guiding plate is arranged in the guiding groove, and the guiding plate is fixedly connected with the inner wall of the first sliding groove. The adjusting seat is provided with a driving unit for driving the arc-shaped rack to rotate.

[0009] Optionally, the driving unit includes a first motor fixedly installed on one of the adjusting seats. Rotating shafts are rotatably connected to both adjusting seats. A toothed disc is fixedly sleeved on the outer part of the rotating shaft, and the arc-shaped rack on the second arc-shaped plate meshes with the toothed disc. The output end of the first motor is fixedly connected with one of the corresponding rotating shafts. A second sliding groove is opened on one of the rotating shafts. A first prism is arranged in the second sliding groove, and the first prism is fixedly connected with the end of the other rotating shaft.

[0010] When the spacing adjusting assembly drives the first arc-shaped plate to move, the first arc-shaped plate drives the first guiding block to slide in the first sliding groove, and the guiding plate slides relative to the guiding groove. When the first guiding block slides into the annular groove, the guiding plate disengages from the guiding groove, and the clamping bar on the first arc-shaped plate is inserted into the corresponding clamping groove. The first arc-shaped plate and the second arc-shaped plate are combined into a complete ring, and the two arc-shaped racks on the first arc-shaped plate and the second arc-shaped plate are combined into a complete toothed ring. At this time, the first motor drives one of the corresponding rotating shafts to rotate. Through the design of the first prism and the second sliding groove, the rotating shaft drives the other rotating shaft to rotate synchronously. The rotating shaft drives the toothed disc to rotate, and the toothed disc can drive the toothed ring formed by combining the two arc-shaped racks to rotate self. The first arc-shaped plate drives the first guiding block to slide in the annular groove, and the second arc-shaped plate drives the second guiding block to slide in the annular groove, so that the aluminum alloy vehicle frame tube fixed between the first arc-shaped plate and the second arc-shaped plate is cut by the saw blade cutting assembly in a circumferential manner.

[0011] Optionally, the spacing adjustment component includes support columns fixedly installed on the first arc plate and the second arc plate respectively. A movable frame is provided on one side of each of the two adjustment seats close to each other. At least one set of pushing units is fixedly installed on the movable frame. Each set of pushing units includes two push blocks fixedly installed on the movable frame. The number of push blocks is the same as that of the first arc plate, and an inclined surface matching the support column is provided on the push block. The adjustment seat is fixedly installed with a first mounting plate. The top of the first mounting plate is fixedly connected with a first hydraulic telescopic rod. The telescopic end of the first hydraulic telescopic rod is fixedly connected with the movable frame. A support plate is sleeved outside the movable frame, and the support plate is fixedly connected with the adjustment seat. The adjustment seat is provided with a reset unit adapted to the first arc plate.

[0012] Optionally, the reset unit includes a plurality of fixed seats fixedly installed on the adjustment seat, and the number of fixed seats is the same as that of the first arc plate. A groove is formed on one side of the fixed seat facing the first arc plate. A movable plate is arranged in the groove. The movable plate and the inner wall of the groove are connected by a plurality of compression springs, and the movable plate is in contact with the first arc plate.

[0013] Optionally, the stretching unit includes a fixing plate fixedly installed at the end of the second prism. The fixing plate is connected to the first arc plate or the second arc plate through a first stretching spring respectively, and an anti-slip pad for contacting the workpiece to be processed is fixedly connected to one end of the second prism away from the fixing plate.

[0014] Optionally, the support unit includes two mounting frames fixedly installed on the top of the base. At least one support seat is fixedly connected to both sides of each mounting frame, and the number of support seats arranged on the same mounting frame is the same as the number of first arc plates arranged on the same adjustment seat.

[0015] Optionally, the saw blade cutting assembly includes a first support sleeve and a second support sleeve disposed above the base. Both the first support sleeve and the second support sleeve are sleeved outside the first prism. An installation seat is rotatably sleeved outside both the first support sleeve and the second support sleeve. The installation seat is fixedly connected to the base. A first positioning ring is fixedly sleeved outside the first support sleeve, and a second positioning ring is fixedly sleeved outside the second support sleeve. A saw blade is disposed between the first support sleeve and the second support sleeve, and the saw blade is in contact with the first positioning ring and the second positioning ring respectively. A plurality of first positioning holes are formed in the saw blade, and a plurality of second positioning holes are formed in both the first positioning ring and the second positioning ring. A movable ring is sleeved outside the second support sleeve. A plurality of positioning columns are fixedly connected to the side of the movable ring facing the second positioning ring. The positioning columns respectively penetrate through the second positioning holes in the first positioning ring and the second positioning ring, and the positioning columns penetrate through the corresponding first positioning holes. A second tension spring is sleeved outside the positioning columns, and both ends of the second tension spring are fixedly connected to the second positioning ring and the movable ring respectively. A control box is sleeved outside the first support sleeve, and the control box is fixedly connected to the corresponding installation seat. A second motor is fixedly connected inside the control box, and an output end of the second motor is fixedly connected to a first bevel gear. A second bevel gear located inside the control box is fixedly sleeved outside the first support sleeve, and the first bevel gear and the second bevel gear are meshed with each other.

[0016] Optionally, the mover includes two second mounting plates fixedly installed on the top of the base. Second hydraulic expansion rods are respectively fixedly connected to the sides of the two second mounting plates close to each other. The telescopic ends of the two second hydraulic expansion rods are respectively fixedly connected to two adjustment seats through connecting frames. Two brackets are fixedly installed on the adjustment seats. Two rollers are fixedly connected to the bottoms of the brackets, and the rollers are in contact with the base.

[0017] The present invention also provides a cutting method for an aluminum alloy frame tube, including the cutting device for the aluminum alloy frame tube as described above, and comprising the following steps: Step 1: The staff places the aluminum alloy frame tube to be cut on the support unit, and the position of the aluminum alloy frame tube to be cut is located on one side of the saw blade cutting assembly. The mover is driven to move the adjustment seat so that the distance between the two adjustment seats and the aluminum alloy frame tube reaches a preset value, and the first arc plate and the second arc plate respectively move to both sides of the aluminum alloy frame tube. Step 2: The distance between the first arc plate and the second arc plate is adjusted through the distance adjustment assembly so that the first arc plate and the second arc plate are combined into a complete ring, and the tension unit applies a pulling force to the second prism. The end of the aluminum alloy frame tube is elastically clamped by the second prisms on the first arc plate and the second arc plate, and the saw blade cutting assembly is in contact with the aluminum alloy frame tube. The aluminum alloy frame tube is cut by the saw blade cutting assembly. Step 3: The meshing synchronous rotation mechanism drives the first arc plate and the second arc plate to rotate self - synchronously, so that the aluminum alloy frame tube fixed between the first arc plate and the second arc plate is circumferentially cut by the saw blade cutting assembly; Step 4: After the aluminum alloy frame tube is cut, the spacing between the first arc plate and the second arc plate is increased through the spacing adjustment assembly, so that the aluminum alloy frame tube is no longer elastically clamped by the second prisms on the first arc plate and the second arc plate; Step 5: The mover drives the two adjustment seats to move away from each other, so that the end of the aluminum alloy frame tube is no longer located between the first arc plate and the second arc plate, and the staff can remove the cut aluminum alloy frame tube from the support unit.

[0018] Advantages of the present invention: The staff places the aluminum alloy frame tube to be cut on the support unit, and the position of the aluminum alloy frame tube to be cut is on one side of the saw blade cutting assembly. The mover drives the adjustment seat to move, so that the spacing between the two adjustment seats and the aluminum alloy frame tube reaches a preset value, and the first arc plate and the second arc plate respectively move to both sides of the aluminum alloy frame tube. The spacing between the first arc plate and the second arc plate is adjusted through the spacing adjustment assembly, so that the first arc plate and the second arc plate form a complete ring, and the stretching unit applies a tensile force to the second prism. The end of the aluminum alloy frame tube is elastically clamped by the second prisms on the first arc plate and the second arc plate, and the saw blade cutting assembly is in contact with the aluminum alloy frame tube. The aluminum alloy frame tube is cut by the saw blade cutting assembly. At the same time, the meshing synchronous rotation mechanism drives the first arc plate and the second arc plate to rotate self - synchronously, so that the aluminum alloy frame tube fixed between the first arc plate and the second arc plate is circumferentially cut by the saw blade cutting assembly. When cutting the aluminum alloy frame tube, the two ends of the aluminum alloy frame tube can be clamped and fixed, without the need for the staff to hold the aluminum alloy frame tube by hand, improving safety. At the same time, multiple aluminum alloy frame tubes can be circumferentially cut, improving the cutting efficiency. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only those of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is the overall structural schematic diagram of the embodiment of the present invention; Figure 2 It is the structural schematic diagram of the adjustment seat of the embodiment of the present invention; Figure 3 It is the structural schematic diagram of the first arc plate of the embodiment of the present invention; Figure 4 Schematic diagram of the structure of the second arc-shaped plate in the embodiment of the present invention; Figure 5 Schematic diagram of the structure of the movable plate and the groove disassembled in the embodiment of the present invention; Figure 6 Schematic diagram of the structure of the movable frame in the embodiment of the present invention; Figure 7 Schematic diagram of the structure of the first prism and the second chute disassembled in the embodiment of the present invention; Figure 8 Schematic diagram of the internal structure of the control box in the embodiment of the present invention; Figure 9 Schematic diagram of the structure of the saw blade disassembled from the first support sleeve and the second support sleeve respectively in the embodiment of the present invention.

[0021] The marks in the figure are: 1. Base; 2. Adjusting seat; 3. Annular groove; 4. First arc-shaped plate; 5. Second arc-shaped plate; 6. Arc-shaped rack; 7. First guide block; 8. Second guide block; 9. First chute; 10. Guide plate; 11. Guide groove; 12. Rotating shaft; 13. First prism; 14. Second chute; 15. Tooth disc; 16. First motor; 17. Fixed seat; 18. Movable plate; 19. Groove; 20. Compression spring; 21. Movable frame; 22. Support plate; 23. Support column; 24. Push block; 25. First mounting plate; 26. First hydraulic telescopic rod; 27. Second prism; 28. Fixed plate; 29. First tension spring; 30. Anti-slip pad; 31. Mounting frame; 32. Support seat; 33. First support sleeve; 34. Second support sleeve; 35. First positioning ring; 36. Second positioning ring; 37. Saw blade; 38. First positioning hole; 39. Second positioning hole; 40. Mounting seat; 41. Movable ring; 42. Positioning column; 43. Second tension spring; 44. Control box; 45. Second motor; 46. First bevel gear; 47. Second bevel gear; 48. Bracket; 49. Roller; 50. Second mounting plate; 51. Second hydraulic telescopic rod; 52. Connecting frame; 53. Card slot; 54. Card strip. Detailed implementation manners

[0022] To make the purpose, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in conjunction with specific embodiments.

[0023] A cutting device for an aluminum alloy vehicle frame tube proposed in this embodiment, such as Figure 1 、 Figure 2 、 Figure 3 and Figure 4As shown, it includes a base 1. At the top of the base 1, a saw blade cutting assembly for cutting a workpiece to be processed is installed. On both sides of the saw blade cutting assembly, adjustment seats 2 are symmetrically arranged. The base 1 is equipped with a mover for driving the two adjustment seats 2 to move. At the top of the base 1, a support unit for supporting the workpiece to be processed is installed. On the side where the two adjustment seats 2 are close to each other, at least one set of clamping and self-rotating assemblies is provided; Each set of clamping and self-rotating assemblies includes two first arc-shaped plates 4. On the side where the two first arc-shaped plates 4 are close to each other, second arc-shaped plates 5 are respectively provided. Two second prisms 27 penetrate through both the first arc-shaped plates 4 and the second arc-shaped plates 5. The first arc-shaped plates 4 and the second arc-shaped plates 5 are respectively provided with stretching units adapted to the second prisms 27. The adjustment seat 2 is equipped with a meshing synchronous rotation mechanism for driving the first arc-shaped plates 4 and the second arc-shaped plates 5 to rotate synchronously. The adjustment seat 2 is equipped with a spacing adjustment assembly for adjusting the spacing between the first arc-shaped plates 4 and the second arc-shaped plates 5; The staff places the aluminum alloy frame tube to be cut on the support unit, and the position of the aluminum alloy frame tube to be cut is on one side of the saw blade cutting assembly. The mover is used to drive the adjustment seat 2 to move so that the spacing between the two adjustment seats 2 and the aluminum alloy frame tube reaches a preset value, and the first arc-shaped plates 4 and the second arc-shaped plates 5 respectively move to both sides of the aluminum alloy frame tube. The spacing adjustment assembly is used to adjust the spacing between the first arc-shaped plates 4 and the second arc-shaped plates 5 so that the first arc-shaped plates 4 and the second arc-shaped plates 5 form a complete ring, and the stretching unit applies a pulling force to the second prism 27. The end of the aluminum alloy frame tube is elastically clamped by the second prisms 27 on the first arc-shaped plates 4 and the second arc-shaped plates 5, and the saw blade cutting assembly is in contact with the aluminum alloy frame tube. The aluminum alloy frame tube is cut by the saw blade cutting assembly. At the same time, the meshing synchronous rotation mechanism drives the first arc-shaped plates 4 and the second arc-shaped plates 5 to rotate self, so that the aluminum alloy frame tube fixed between the first arc-shaped plates 4 and the second arc-shaped plates 5 is circumferentially cut by the saw blade cutting assembly. When cutting the aluminum alloy frame tube, the two ends of the aluminum alloy frame tube can be clamped and fixed, eliminating the need for the staff to hold the aluminum alloy frame tube by hand, improving safety. At the same time, multiple aluminum alloy frame tubes can be circumferentially cut, improving the cutting efficiency.

[0024] In some optional specific embodiments, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 7As shown in the figure, the meshing synchronous rotation mechanism includes arc-shaped racks 6 respectively and fixedly installed on the outer walls of the first arc-shaped plate 4 and the second arc-shaped plate 5. On the side of the second arc-shaped plate 5 facing the first arc-shaped plate 4, two card slots 53 are provided. On the side of the first arc-shaped plate 4 facing the second arc-shaped plate 5, two card strips 54 are fixedly connected, and the card strips 54 are adapted to the card slots 53. A number of annular grooves 3 are provided on the adjustment seat 2, and the number of annular grooves 3 is the same as that of the first arc-shaped plate 4. The first arc-shaped plate 4 is fixedly installed with a first guide block 7 adapted to the annular groove 3. The second arc-shaped plate 5 is fixedly installed with a second guide block 8 located in the annular groove 3. A first sliding groove 9 adapted to the first guide block 7 is provided on the inner wall of the annular groove 3, and the first guide block 7 is located in the first sliding groove 9. A guide groove 11 is provided on the first guide block 7, and a guide plate 10 is provided in the guide groove 11, and the guide plate 10 is fixedly connected to the inner wall of the first sliding groove 9. The adjustment seat 2 is equipped with a driving unit for driving the arc-shaped rack 6 to rotate. The driving unit includes a first motor 16 fixedly installed on one of the adjustment seats 2. Rotating shafts 12 are rotatably connected to both adjustment seats 2. A toothed disc 15 is fixedly sleeved on the outside of the rotating shaft 12, and the arc-shaped rack 6 on the second arc-shaped plate 5 meshes with the toothed disc 15. The output end of the first motor 16 is fixedly connected to one of the corresponding rotating shafts 12. A second sliding groove 14 is provided on one of the rotating shafts 12, and a first prism 13 is provided in the second sliding groove 14, and the first prism 13 is fixedly connected to the end of the other rotating shaft 12; When the spacing adjustment assembly drives the first arc-shaped plate 4 to move, the first arc-shaped plate 4 drives the first guide block 7 to slide in the first sliding groove 9, and the guide plate 10 slides relative to the guide groove 11. When the first guide block 7 slides into the annular groove 3, the guide plate 10 disengages from the guide groove 11, and the card strip 54 on the first arc-shaped plate 4 is inserted into the corresponding card slot 53. The first arc-shaped plate 4 and the second arc-shaped plate 5 are combined into a complete ring, and the two arc-shaped racks 6 on the first arc-shaped plate 4 and the second arc-shaped plate 5 are combined into a complete toothed ring. At this time, the first motor 16 drives one of the corresponding rotating shafts 12 to rotate. Through the design of the first prism 13 and the second sliding groove 14, the rotating shaft 12 drives the other rotating shaft 12 to rotate synchronously. The rotating shaft 12 drives the toothed disc 15 to rotate, and the toothed disc 15 can drive the toothed ring formed by the two arc-shaped racks 6 to rotate self. The first arc-shaped plate 4 drives the first guide block 7 to slide in the annular groove 3, and the second arc-shaped plate 5 drives the second guide block 8 to slide in the annular groove 3, so that the aluminum alloy frame tube fixed between the first arc-shaped plate 4 and the second arc-shaped plate 5 is cut by the saw blade cutting assembly in a circumferential manner.

[0025] In some optional specific embodiments, such as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6As shown in the figure, the spacing adjustment component includes support columns 23 respectively and fixedly installed on the first arc-shaped plate 4 and the second arc-shaped plate 5. On the side where the two adjustment seats 2 are close to each other, there are movable frames 21. At least one set of pushing units is fixedly installed on the movable frame 21. Each set of pushing units includes two push blocks 24 fixedly installed on the movable frame 21. The number of push blocks 24 is the same as that of the first arc-shaped plate 4. And an inclined surface matching with the support column 23 is provided on the push block 24. The adjustment seat 2 is fixedly installed with a first mounting plate 25. The top of the first mounting plate 25 is fixedly connected with a first hydraulic telescopic rod 26. The telescopic end of the first hydraulic telescopic rod 26 is fixedly connected with the movable frame 21. The outside of the movable frame 21 is sleeved with a support plate 22, and the support plate 22 is fixedly connected with the adjustment seat 2. The adjustment seat 2 is provided with a reset unit adapted to the first arc-shaped plate 4. The reset unit includes a number of fixed seats 17 fixedly installed on the adjustment seat 2, and the number of fixed seats 17 is the same as that of the first arc-shaped plate 4. A groove 19 is opened on the side of the fixed seat 17 facing the first arc-shaped plate 4. An activity plate 18 is arranged in the groove 19. The activity plate 18 and the inner wall of the groove 19 are connected by a number of compression springs 20. The activity plate 18 is in contact with the first arc-shaped plate 4. The stretching unit includes a fixing plate 28 fixedly installed at the end of the second prism 27. The fixing plate 28 is connected with the first arc-shaped plate 4 or the second arc-shaped plate 5 through a first stretching spring 29 respectively. And one end of the second prism 27 far from the fixing plate 28 is fixedly connected with an anti-slip pad 30 for contacting the workpiece to be processed; The movable frame 21 is driven to move upward by the first hydraulic telescopic rod 26, and the inclined surface on the push block 24 comes into contact with the support column 23 on the first arc-shaped plate 4. As the movable frame 21 continues to move upward, the support column 23 slides on the inclined surface of the push block 24, and the push block 24 pushes the support column 23 and the first arc-shaped plate 4 to move towards the second arc-shaped plate 5. Moreover, the first arc-shaped plate 4 pushes the movable plate 18 to slide relative to the groove 19, and the compression spring 20 is in a compressed state. As the distance between the first arc-shaped plate 4 and the second arc-shaped plate 5 increases, the anti-slip pads 30 on the first arc-shaped plate 4 and the second arc-shaped plate 5 come into contact with the aluminum alloy vehicle frame tube. As the first arc-shaped plate 4 continues to move, the second prism 27 and the fixed plate 28 slide relative to the first arc-shaped plate 4 or the second arc-shaped plate 5, and the first tension spring 29 is in a stretched state. The first tension spring 29 exerts a pulling force on the fixed plate 28 and the second prism 27, so that the second prism 27 on the first arc-shaped plate 4 and the second arc-shaped plate 5 elastically clamp the aluminum alloy vehicle frame tube, and the second prism 27 on the first arc-shaped plate 4 pushes the aluminum alloy vehicle frame tube towards the saw blade cutting assembly, so that the saw blade cutting assembly cuts the aluminum alloy vehicle frame tube. When the first arc-shaped plate 4 and the second arc-shaped plate 5 are combined into a complete ring, the movable frame 21 stops moving upward. When it is necessary to drive the first arc-shaped plate 4 to move away from the second arc-shaped plate 5, the first hydraulic telescopic rod 26 drives the movable frame 21 to move downward, and the compression spring 20 exerts a pushing force on the movable plate 18. The movable plate 18 pushes the first arc-shaped plate 4 to move away from the second arc-shaped plate 5, so that the first arc-shaped plate 4 is reset to the initial position relative to the adjustment seat 2.

[0026] In some optional specific embodiments, such as Figure 1 、 Figure 2 、 Figure 8 and Figure 9As shown in the figure, the support unit includes two mounting brackets 31 fixedly installed on the top of the base 1. At least one support seat 32 is fixedly connected to both sides of the mounting bracket 31. The number of support seats 32 provided on the same mounting bracket 31 is the same as the number of the first arc-shaped plates 4 provided on the same adjustment seat 2. The saw blade cutting assembly includes a first support sleeve 33 and a second support sleeve 34 disposed above the base 1. Both the first support sleeve 33 and the second support sleeve 34 are sleeved outside the first prism 13. An installation seat 40 is rotatably sleeved outside both the first support sleeve 33 and the second support sleeve 34. The installation seat 40 is fixedly connected to the base 1. A first positioning ring 35 is fixedly sleeved outside the first support sleeve 33. A second positioning ring 36 is fixedly sleeved outside the second support sleeve 34. A saw blade 37 is disposed between the first support sleeve 33 and the second support sleeve 34. The saw blade 37 is respectively in contact with the first positioning ring 35 and the second positioning ring 36. A number of first positioning holes 38 are formed in the saw blade 37. A number of second positioning holes 39 are formed in both the first positioning ring 35 and the second positioning ring 36. A movable ring 41 is sleeved outside the second support sleeve 34. A number of positioning columns 42 are fixedly connected to the side of the movable ring 41 facing the second positioning ring 36. The positioning columns 42 respectively penetrate through the second positioning holes 39 in the first positioning ring 35 and the second positioning ring 36. The positioning columns 42 penetrate through the corresponding first positioning holes 38. A second tension spring 43 is sleeved outside the positioning columns 42. Both ends of the second tension spring 43 are fixedly connected to the second positioning ring 36 and the movable ring 41 respectively. A control box 44 is sleeved outside the first support sleeve 33. The control box 44 is fixedly connected to the corresponding installation seat 40. A second motor 45 is fixedly connected inside the control box 44. The output end of the second motor 45 is fixedly connected with a first bevel gear 46. A second bevel gear 47 is fixedly sleeved outside the first support sleeve 33 and located inside the control box 44. The first bevel gear 46 and the second bevel gear 47 are meshed with each other. The mover includes two second mounting plates 50 fixedly installed on the top of the base 1. Second hydraulic expansion rods 51 are respectively fixedly connected to the sides of the two second mounting plates 50 close to each other. The telescopic ends of the two second hydraulic expansion rods 51 are respectively fixedly connected to the two adjustment seats 2 through connecting frames 52. Two brackets 48 are fixedly installed on the adjustment seat 2. Two rollers 49 are fixedly connected to the bottom of the brackets 48. The rollers 49 are in contact with the base 1; The aluminum alloy frame tube is supported by the support base 32 on the mounting bracket 31. The second motor 45 drives the first bevel gear 46 to rotate. The first bevel gear 46 drives the first support sleeve 33 and the first positioning ring 35 to rotate through the second bevel gear 47. The first positioning ring 35 drives the saw blade 37, the second positioning ring 36 and the second support sleeve 34 to rotate synchronously through the positioning post 42. Thus, the aluminum alloy frame tube can be cut by the saw blade 37. The second hydraulic telescopic rod 51 drives the connecting frame 52 and the adjusting seat 2 to move horizontally, so as to adjust the distance between the two adjusting seats 2. At the same time, the adjusting seat 2 drives the roller 49 to roll on the base 1 through the bracket 48. Through the design of the bracket 48 and the roller 49, the resistance received when the adjusting seat 2 moves horizontally is reduced. When the adjusting seat 2 moves, the first prism 13 slides relative to the second chute 14. When the saw blade 37 needs to be replaced, the second hydraulic telescopic rod 51 drives the adjusting seat 2 to move, increasing the distance between the two adjusting seats 2, so that the adjusting seat 2 drives the first prism 13 to disengage from the second chute 14 through the rotating shaft 12, so that there is a gap between the rotating shaft 12 provided with the second chute 14 and the first prism 13, and the gap is located between the first positioning ring 35 and the second positioning ring 36. The staff drives the movable ring 41 to move, so that the positioning post 42 disengages from the second positioning hole 39 on the first positioning ring 35, and the positioning post 42 disengages from the first positioning hole 38 on the saw blade 37. The second tension spring 43 is in a stretched state, releasing the limitation of the position of the saw blade 37. The staff drives the saw blade 37 to move up, and extracts the saw blade 37 from between the first positioning ring 35 and the second positioning ring 36, and the saw blade 37 is extracted from the gap between the rotating shaft 12 provided with the second chute 14 and the first prism 13, and thus the removal of the saw blade 37 can be completed. Similarly, by operating the above steps in reverse, the installation of the saw blade 37 can be completed, which is convenient for the disassembly and assembly of the saw blade 37.

[0027] This embodiment also provides a cutting method for an aluminum alloy frame tube, including the cutting device for the aluminum alloy frame tube as described above, and includes the following steps: Step 1: The staff places the aluminum alloy frame tube to be cut on the supporting unit, and the position to be cut of the aluminum alloy frame tube is located on one side of the saw blade cutting assembly. The mover drives the adjusting seat 2 to move, so that the distance between the two adjusting seats 2 and the aluminum alloy frame tube reaches a preset value, and the first arc plate 4 and the second arc plate 5 respectively move to both sides of the aluminum alloy frame tube. Step 2: Adjust the distance between the first arc plate 4 and the second arc plate 5 through the distance adjusting assembly, so that the first arc plate 4 and the second arc plate 5 are combined into a complete ring, and the stretching unit applies a pulling force to the second prism 27. The end of the aluminum alloy frame tube is elastically clamped by the second prism 27 on the first arc plate 4 and the second arc plate 5, and the saw blade cutting assembly is in contact with the aluminum alloy frame tube. The aluminum alloy frame tube is cut by the saw blade cutting assembly. Step 3: The meshing synchronous rotation mechanism drives the first arc plate 4 and the second arc plate 5 to rotate self, so that the aluminum alloy frame tube fixed between the first arc plate 4 and the second arc plate 5 is circumferentially cut by the saw blade cutting assembly; Step 4: After the aluminum alloy frame tube is cut, the distance between the first arc plate 4 and the second arc plate 5 is increased through the spacing adjustment assembly, so that the aluminum alloy frame tube is no longer elastically clamped by the second prisms 27 on the first arc plate 4 and the second arc plate 5; Step 5: The mover drives the two adjustment seats 2 to move away from each other, so that the end of the aluminum alloy frame tube is no longer located between the first arc plate 4 and the second arc plate 5, and the staff can remove the cut aluminum alloy frame tube from the support unit.

[0028] Working principle: The staff places the aluminum alloy frame tube to be cut on the support unit, and the position of the aluminum alloy frame tube to be cut is on one side of the saw blade cutting assembly. The mover drives the adjustment seat 2 to move, so that the distance between the two adjustment seats 2 and the aluminum alloy frame tube reaches the preset value, and the first arc plate 4 and the second arc plate 5 respectively move to both sides of the aluminum alloy frame tube. The distance between the first arc plate 4 and the second arc plate 5 is adjusted through the spacing adjustment assembly, so that the first arc plate 4 and the second arc plate 5 are combined into a complete ring, and the stretching unit applies a pulling force to the second prism 27. The end of the aluminum alloy frame tube is elastically clamped by the second prisms 27 on the first arc plate 4 and the second arc plate 5, and the saw blade cutting assembly is in contact with the aluminum alloy frame tube. The aluminum alloy frame tube is cut by the saw blade cutting assembly. At the same time, the meshing synchronous rotation mechanism drives the first arc plate 4 and the second arc plate 5 to rotate self, so that the aluminum alloy frame tube fixed between the first arc plate 4 and the second arc plate 5 is circumferentially cut by the saw blade cutting assembly. After the aluminum alloy frame tube is cut, the distance between the first arc plate 4 and the second arc plate 5 is increased through the spacing adjustment assembly, so that the aluminum alloy frame tube is no longer elastically clamped by the second prisms 27 on the first arc plate 4 and the second arc plate 5. The mover drives the two adjustment seats 2 to move away from each other, so that the end of the aluminum alloy frame tube is no longer located between the first arc plate 4 and the second arc plate 5, and the staff can remove the cut aluminum alloy frame tube from the support unit. When cutting the aluminum alloy frame tube, the two ends of the aluminum alloy frame tube can be clamped and fixed, and it is not necessary for the staff to hold the aluminum alloy frame tube by hand, which improves the safety. At the same time, multiple aluminum alloy frame tubes can be circumferentially cut, which improves the cutting efficiency; When the spacing adjustment component drives the first arc-shaped plate 4 to move, the first arc-shaped plate 4 drives the first guide block 7 to slide within the first chute 9, and the guide plate 10 slides relative to the guide groove 11. When the first guide block 7 slides into the annular groove 3, the guide plate 10 disengages from the guide groove 11, and the latch 54 on the first arc-shaped plate 4 inserts into the corresponding card slot 53. The first arc-shaped plate 4 and the second arc-shaped plate 5 combine to form a complete ring, and the two arc-shaped racks 6 on the first arc-shaped plate 4 and the second arc-shaped plate 5 combine to form a complete gear ring. At this time, the first motor 16 drives one of the corresponding rotating shafts 12 to rotate. Through the design of the first prism 13 and the second chute 14, the rotating shaft 12 drives the other rotating shaft 12 to rotate synchronously. The rotating shaft 12 drives the gear disk 15 to rotate, and the gear disk 15 can drive the gear ring formed by the two arc-shaped racks 6 to rotate. The first arc-shaped plate 4 drives the first guide block 7 to slide within the annular groove 3, and the second arc-shaped plate 5 drives the second guide block 8 to slide within the annular groove 3, thereby enabling the aluminum alloy frame tube fixed between the first arc-shaped plate 4 and the second arc-shaped plate 5 to be circumferentially cut by the saw blade cutting component; The first hydraulic telescopic rod 26 drives the movable frame 21 to move upward. The inclined surface on the push block 24 comes into contact with the support column 23 on the first arc-shaped plate 4. As the movable frame 21 continues to move upward, the support column 23 slides on the inclined surface of the push block 24. The push block 24 pushes the support column 23 and the first arc-shaped plate 4 towards the second arc-shaped plate 5, and the first arc-shaped plate 4 pushes the movable plate 18 to slide relative to the groove 19, and the compression spring 20 is in a compressed state. As the distance between the first arc-shaped plate 4 and the second arc-shaped plate 5 increases, the anti-slip pads 30 on the first arc-shaped plate 4 and the second arc-shaped plate 5 come into contact with the aluminum alloy frame tube. As the first arc-shaped plate 4 continues to move, the second prism 27 and the fixed plate 28 slide relative to the first arc-shaped plate 4 or the second arc-shaped plate 5, and the first tension spring 29 is in a stretched state. The first tension spring 29 exerts a pulling force on the fixed plate 28 and the second prism 27, so that the second prism 27 on the first arc-shaped plate 4 and the second arc-shaped plate 5 elastically clamps the aluminum alloy frame tube, and the second prism 27 on the first arc-shaped plate 4 pushes the aluminum alloy frame tube towards the saw blade cutting component, so that the saw blade cutting component cuts the aluminum alloy frame tube. When the first arc-shaped plate 4 and the second arc-shaped plate 5 combine to form a complete ring, the movable frame 21 stops moving upward. When it is necessary to drive the first arc-shaped plate 4 to move away from the second arc-shaped plate 5, the first hydraulic telescopic rod 26 drives the movable frame 21 to move downward. The compression spring 20 exerts a pushing force on the movable plate 18, and the movable plate 18 pushes the first arc-shaped plate 4 to move away from the second arc-shaped plate 5, so that the first arc-shaped plate 4 returns to its initial position relative to the adjustment seat 2; The aluminum alloy frame tube is supported by the support base 32 on the mounting bracket 31. The second motor 45 drives the first bevel gear 46 to rotate. The first bevel gear 46 drives the first support sleeve 33 and the first positioning ring 35 to rotate through the second bevel gear 47. The first positioning ring 35 drives the saw blade 37, the second positioning ring 36 and the second support sleeve 34 to rotate synchronously through the positioning column 42. Thus, the aluminum alloy frame tube can be cut by the saw blade 37. The second hydraulic telescopic rod 51 drives the connecting frame 52 and the adjusting seat 2 to move horizontally, so as to adjust the distance between the two adjusting seats 2. At the same time, the adjusting seat 2 drives the roller 49 to roll on the base 1 through the bracket 48. Through the design of the bracket 48 and the roller 49, the resistance received when the adjusting seat 2 moves horizontally is reduced. When the adjusting seat 2 moves, the first prism 13 slides relative to the second chute 14. When the saw blade 37 needs to be replaced, the second hydraulic telescopic rod 51 drives the adjusting seat 2 to move, increasing the distance between the two adjusting seats 2, so that the adjusting seat 2 drives the first prism 13 to disengage from the second chute 14 through the rotating shaft 12, so that there is a gap between the rotating shaft 12 provided with the second chute 14 and the first prism 13, and the gap is located between the first positioning ring 35 and the second positioning ring 36. The staff drives the movable ring 41 to move, so that the positioning column 42 disengages from the second positioning hole 39 on the first positioning ring 35, and the positioning column 42 disengages from the first positioning hole 38 on the saw blade 37. The second tension spring 43 is in a stretched state, releasing the limitation on the position of the saw blade 37. The staff drives the saw blade 37 to move upward, and withdraws the saw blade 37 from between the first positioning ring 35 and the second positioning ring 36, and the saw blade 37 is withdrawn from the gap between the rotating shaft 12 provided with the second chute 14 and the first prism 13, and thus the removal of the saw blade 37 can be completed. Similarly, by operating the above steps in reverse, the installation of the saw blade 37 can be completed, which is convenient for the disassembly and assembly of the saw blade 37.

[0029] Those of ordinary skill in the art should understand that: the discussion of any of the above embodiments is only exemplary, and is not intended to imply that the scope of the present invention is limited to these examples; under the idea of the present invention, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations in different aspects of the present invention as described above, and they are not provided in detail for the sake of brevity.

Claims

1. A cutting device for an aluminum alloy frame tube, comprising a base (1), characterized in that, A saw blade cutting assembly for cutting a workpiece to be processed is mounted on the top of the base (1). Adjusting seats (2) are symmetrically arranged on both sides of the saw blade cutting assembly. A mover for driving the two adjusting seats (2) to move is mounted on the base (1). A supporting unit for supporting the workpiece to be processed is mounted on the top of the base (1). At least one set of clamping and self-rotating assemblies is arranged on one side of each of the two adjusting seats (2) close to each other. Each set of the clamping and self-rotating assemblies includes two first arc-shaped plates (4). Second arc-shaped plates (5) are respectively arranged on one side of the two first arc-shaped plates (4) close to each other. Two second prisms (27) penetrate through both the first arc-shaped plates (4) and the second arc-shaped plates (5). Tensile units adapted to the second prisms (27) are respectively arranged on the first arc-shaped plates (4) and the second arc-shaped plates (5). A meshing synchronous rotation mechanism for driving the first arc-shaped plates (4) and the second arc-shaped plates (5) to rotate synchronously is mounted on the adjusting seat (2). A spacing adjusting assembly for adjusting the spacing between the first arc-shaped plates (4) and the second arc-shaped plates (5) is mounted on the adjusting seat (2).

2. The cutting device for the aluminum alloy frame tube according to claim 1, characterized in that, The meshing synchronous rotation mechanism includes arc-shaped racks (6) respectively and fixedly mounted on the outer walls of the first arc-shaped plates (4) and the second arc-shaped plates (5). Two card slots (53) are formed on one side of the second arc-shaped plate (5) facing the first arc-shaped plate (4). Two card strips (54) are fixedly connected to one side of the first arc-shaped plate (4) facing the second arc-shaped plate (5), and the card strips (54) are adapted to the card slots (53). A number of annular grooves (3) are formed on the adjusting seat (2), and the number of the annular grooves (3) is the same as that of the first arc-shaped plates (4) arranged. A first guiding block (7) adapted to the annular groove (3) is fixedly mounted on the first arc-shaped plate (4). A second guiding block (8) located in the annular groove (3) is fixedly mounted on the second arc-shaped plate (5). A first sliding groove (9) adapted to the first guiding block (7) is formed on the inner wall of the annular groove (3), and the first guiding block (7) is located in the first sliding groove (9). A guiding groove (11) is formed on the first guiding block (7), and a guiding plate (10) is arranged in the guiding groove (11), and the guiding plate (10) is fixedly connected to the inner wall of the first sliding groove (9). A driving unit for driving the arc-shaped rack (6) to rotate is mounted on the adjusting seat (2).

3. The cutting device for the aluminum alloy frame tube according to claim 2, wherein, The driving unit includes a first motor (16) fixedly mounted on one of the adjusting seats (2). A rotating shaft (12) is rotatably connected to both of the two adjusting seats (2). A toothed disc (15) is fixedly sleeved on the outer part of the rotating shaft (12), and the arc-shaped rack (6) on the second arc-shaped plate (5) meshes with the toothed disc (15). The output end of the first motor (16) is fixedly connected to one of the corresponding rotating shafts (12). A second sliding groove (14) is formed on one of the rotating shafts (12). A first prism (13) is arranged in the second sliding groove (14), and the first prism (13) is fixedly connected to the end of the other rotating shaft (12).

4. The cutting device for the aluminum alloy frame tube according to claim 1, characterized in that, The spacing adjustment component includes support columns (23) respectively and fixedly installed on the first arc-shaped plate (4) and the second arc-shaped plate (5). On one side where the two adjustment seats (2) are close to each other, there are movable frames (21). At least one set of pushing units is fixedly installed on the movable frame (21). Each set of pushing units includes two push blocks (24) fixedly installed on the movable frame (21). The number of push blocks (24) is the same as that of the first arc-shaped plate (4) provided. And an inclined surface matched with the support column (23) is provided on the push block (24). The adjustment seat (2) is fixedly installed with a first mounting plate (25). The top of the first mounting plate (25) is fixedly connected with a first hydraulic telescopic rod (26). The telescopic end of the first hydraulic telescopic rod (26) is fixedly connected with the movable frame (21). A support plate (22) is sleeved outside the movable frame (21), and the support plate (22) is fixedly connected with the adjustment seat (2). The adjustment seat (2) is provided with a reset unit adapted to the first arc-shaped plate (4).

5. The cutting device for an aluminum alloy frame tube according to claim 4, wherein, The reset unit includes a number of fixed seats (17) fixedly installed on the adjustment seat (2), and the number of fixed seats (17) is the same as that of the first arc-shaped plate (4) provided. A groove (19) is formed on one side of the fixed seat (17) facing the first arc-shaped plate (4). An activity plate (18) is arranged in the groove (19). The activity plate (18) and the inner wall of the groove (19) are connected by a number of compression springs (20). The activity plate (18) is in contact with the first arc-shaped plate (4).

6. The cutting device for the aluminum alloy frame tube according to claim 1, wherein The stretching unit includes a fixed plate (28) fixedly installed at the end of the second prism (27). The fixed plate (28) is connected with the first arc-shaped plate (4) or the second arc-shaped plate (5) through a first stretching spring (29). And an anti-slip pad (30) for contacting the workpiece to be processed is fixedly connected to one end of the second prism (27) far away from the fixed plate (28).

7. The cutting device for an aluminum alloy frame tube according to claim 1, characterized in that, The support unit includes two mounting frames (31) fixedly installed on the top of the base (1). At least one support seat (32) is fixedly connected to both sides of the mounting frame (31). And the number of support seats (32) arranged on the same mounting frame (31) is the same as the number of the first arc-shaped plates (4) arranged on the same adjustment seat (2).

8. The cutting device for an aluminum alloy frame tube according to claim 3, characterized in that, The saw blade cutting assembly includes a first support sleeve (33) and a second support sleeve (34) disposed above the base (1). Both the first support sleeve (33) and the second support sleeve (34) are sleeved outside the first prism (13). An installation base (40) is rotatably sleeved outside both the first support sleeve (33) and the second support sleeve (34). The installation base (40) is fixedly connected to the base (1). A first positioning ring (35) is fixedly sleeved outside the first support sleeve (33), and a second positioning ring (36) is fixedly sleeved outside the second support sleeve (34). A saw blade (37) is provided between the first support sleeve (33) and the second support sleeve (34), and the saw blade (37) is in contact with the first positioning ring (35) and the second positioning ring (36) respectively. A number of first positioning holes (38) are formed in the saw blade (37), and a number of second positioning holes (39) are formed in both the first positioning ring (35) and the second positioning ring (36). A movable ring (41) is sleeved outside the second support sleeve (34). A number of positioning columns (42) are fixedly connected to the side of the movable ring (41) facing the second positioning ring (36). The positioning columns (42) respectively penetrate through the second positioning holes (39) in the first positioning ring (35) and the second positioning ring (36), and the positioning columns (42) penetrate through the corresponding first positioning holes (38). A second tension spring (43) is sleeved outside the positioning columns (42). The two ends of the second tension spring (43) are fixedly connected to the second positioning ring (36) and the movable ring (41) respectively. A control box (44) is sleeved outside the first support sleeve (33), and the control box (44) is fixedly connected to the corresponding installation base (40). A second motor (45) is fixedly connected inside the control box (44). The output end of the second motor (45) is fixedly connected to a first bevel gear (46). A second bevel gear (47) is fixedly sleeved outside the first support sleeve (33) and is located inside the control box (44), and the first bevel gear (46) meshes with the second bevel gear (47).

9. The cutting device for an aluminum alloy frame tube according to claim 1, characterized in that, The mover includes two second mounting plates (50) fixedly installed on the top of the base (1). Second hydraulic expansion rods (51) are fixedly connected to the sides of the two second mounting plates (50) close to each other. The telescopic ends of the two second hydraulic expansion rods (51) are respectively fixedly connected to two adjustment seats (2) through connecting frames (52). Two brackets (48) are fixedly installed on the adjustment seats (2). Two rollers (49) are fixedly connected to the bottoms of the brackets (48), and the rollers (49) are in contact with the base (1).

10. A cutting method for an aluminum alloy frame tube, comprising the cutting device for an aluminum alloy frame tube as described in claim 1, characterized in that: It includes the following steps: Step 1: The staff places the aluminum alloy frame tube to be cut on the support unit, and the position to be cut of the aluminum alloy frame tube is located on one side of the saw blade cutting assembly. The mover is used to drive the adjustment seat (2) to move so that the distance between the two adjustment seats (2) and the aluminum alloy frame tube reaches a preset value, and the first arc-shaped plate (4) and the second arc-shaped plate (5) respectively move to both sides of the aluminum alloy frame tube; Step 2: Adjust the distance between the first arc plate (4) and the second arc plate (5) through the distance adjustment component, so that the first arc plate (4) and the second arc plate (5) are combined into a complete ring, and the stretching unit applies a pulling force to the second prism (27). The end of the aluminum alloy bicycle frame tube is elastically clamped by the second prism (27) on the first arc plate (4) and the second arc plate (5), and the saw blade cutting component is in contact with the aluminum alloy bicycle frame tube, and the aluminum alloy bicycle frame tube is cut by the saw blade cutting component; Step 3: The meshing synchronous rotation mechanism drives the first arc plate (4) and the second arc plate (5) to rotate self, so that the aluminum alloy bicycle frame tube fixed between the first arc plate (4) and the second arc plate (5) is circumferentially cut by the saw blade cutting component; Step 4: When the cutting of the aluminum alloy bicycle frame tube is completed, increase the distance between the first arc plate (4) and the second arc plate (5) through the distance adjustment component, so that the aluminum alloy bicycle frame tube is no longer elastically clamped by the second prism (27) on the first arc plate (4) and the second arc plate (5); Step 5: Drive the two adjustment seats (2) to move away from each other through the mover, so that the end of the aluminum alloy bicycle frame tube is no longer located between the first arc plate (4) and the second arc plate (5), and the staff can remove the cut aluminum alloy bicycle frame tube from the support unit.

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