High-precision pipe cutting machine
By designing a multi-saw-blade synchronous cutting mechanism on the pipe cutting machine, the problems of low cutting efficiency and precision in the existing technology are solved, and a high-efficiency and smooth pipe cutting effect is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-07
- Publication Date
- 2026-04-14
AI Technical Summary
In the existing technology, handheld cutting machines have low efficiency and low precision in cutting pipes, especially when cutting large-diameter pipes, which can easily lead to uneven cuts.
Design a high-precision pipe cutting machine that uses a multi-saw blade synchronous cutting mechanism. The feed amount of the saw blades is adjusted by a wheel and an adjustment unit, and the wheel is driven to rotate by a drive unit to achieve synchronous cutting of pipes by multiple saw blades, thus avoiding pipe flipping.
It improves cutting efficiency and precision, ensures a smooth cut, and reduces the complexity and time cost of manual operation.
Smart Images
Figure CN224116251U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of cutting technology, and in particular relates to a high-precision pipe cutting machine. Background Technology
[0002] Pipes are formed through extrusion or injection molding processes and are widely used in construction, machinery and other fields. The formed pipes are too long to be used directly, so they need to be cut to ensure that the length specifications meet the usage requirements.
[0003] In existing technologies, pipes are typically cut by hand using a single saw blade and a worker holding a cutting machine. However, due to the limited diameter of the saw blade (mostly 200-400mm), when cutting pipes with larger diameters, it is often necessary to flip the pipe multiple times to avoid jamming. This method is not only inefficient but also prone to uneven cuts, affecting cutting accuracy. Therefore, it is necessary to design a high-precision pipe cutting machine to solve this problem. Utility Model Content
[0004] Technical problems to be solved
[0005] This invention provides a high-precision pipe cutting machine that can simultaneously cut each side of a pipe using multiple saw blades, thereby improving work efficiency and cutting accuracy.
[0006] Technical solution
[0007] To achieve the above objectives, this utility model provides the following technical solution:
[0008] A high-precision pipe cutting machine includes a machine body and a cutting mechanism: the cutting mechanism includes a wheel, saw blades, an adjustment unit, and a drive unit; the wheel is rotatably mounted on the machine body and has a cutting station inside it; multiple saw blades are arranged in a circumferential array on the wheel, and all the saw blades are located within the cutting station and are slidably connected to the wheel; the adjustment unit is mounted on the wheel and is driven by the multiple saw blades to move the multiple saw blades toward the center of the cutting station to abut or move away from the pipe; the drive unit is mounted on the machine body and is driven by the wheel to drive the wheel to rotate and drive the multiple saw blades to cut the pipe synchronously.
[0009] Preferably, the wheel has a plurality of grooves arranged in a circular array extending toward the cutting station. Each of the plurality of saw blades is connected to a carrier plate with a slider. The sliders are slidably mounted in the grooves so that the saw blades can be slidably mounted on the wheel. The adjusting part includes a plurality of screws, each of which is rotatably mounted in the grooves and threadedly connected to the sliders. Rotating the screws drives the sliders to move along the grooves so that the saw blades move toward the center of the cutting station to abut or move away from the pipe.
[0010] Preferably, the saw blade is circular, and the saw blade is rotatably connected to the carrier plate.
[0011] Preferably, the adjusting part further includes bevel gears and a fixed disk. Multiple bevel gears are provided and located within the cutting station, and multiple bevel gears are coaxially fixed to multiple screws. The fixed disk is disposed within the cutting station and fixed to the machine body, and the fixed disk is provided with teeth that can mesh with the bevel gears. When the multiple bevel gears are driven to contact the teeth by rotating the disk, the teeth come together and mesh with the bevel gears to drive the corresponding screws to rotate.
[0012] Preferably, the teeth are arranged in a plurality of circular arrays on the fixed disk, and the plurality of teeth correspond one-to-one with the plurality of bevel gears to drive the plurality of screws to rotate synchronously.
[0013] Preferably, the machine body is provided with a shaft column, the fixed disk is coaxially fixed to the shaft column, the drive unit includes a first motor and a driven gear; the driven gear is coaxially mounted on the wheel and sleeved on the shaft column, so that the wheel is rotatably mounted on the machine body, the first motor is mounted on the machine body, and a first gear that meshes with the driven gear is mounted on the output shaft of the first motor.
[0014] Preferably, the system further includes a positioning mechanism, which comprises a first parallel cylinder and a first clamping plate. The first parallel cylinder is mounted on the machine body and located beside the wheel. Two first clamping plates are provided and mounted on the two arms of the first parallel cylinder. Each of the two first clamping plates is detachably equipped with a first clamping block having a first clamping opening. The first clamping openings of the two first clamping blocks cooperate with each other and are designed to be coaxial with the wheel. The pipe extends into the cutting station, and the first parallel cylinder drives the two first clamping plates to move closer together so that the two first clamping openings clamp and fix the pipe, thereby ensuring that the pipe is located at the center of the cutting station.
[0015] Preferably, the positioning mechanism has two sets located on the front and rear sides of the wheel respectively, to simultaneously clamp or release the pipe; the first clamping block has multiple specifications, and the first clamping blocks of different specifications have first clamping openings of different diameters to accommodate clamping pipes of different diameters.
[0016] Preferably, the system further includes a feeding mechanism, which comprises a guide seat, a rack, a second motor, a second parallel cylinder, and a second clamping plate. The machine body is provided with a guide rail extending towards the cutting station. The guide seat is slidably connected to the guide rail. The rack is mounted on the machine body and extends towards the cutting station. The second motor is mounted on the guide seat, and a second gear meshing with the rack is mounted on the output shaft of the second motor. The second parallel cylinder is mounted on the guide seat. Two second clamping plates are provided and mounted on the two arms of the second parallel cylinder. Each of the two second clamping plates is detachably mounted with a second clamping block having a second clamping opening. The two second clamping openings cooperate with each other and are coaxially designed with the two first clamping openings. The two second clamping plates are driven to move closer together by the second parallel cylinder so that the two second clamping openings clamp and fix the pipe. The second gear is driven to rotate by the second motor so that the guide seat moves along the guide rail, thereby conveying the pipe to the cutting station.
[0017] Preferably, it further includes a lifting mechanism, which includes a placement block and a height adjustment unit. The placement block is provided with a V-shaped opening for placing the pipe. The height adjustment unit is installed on the machine body and drivenly connected to the placement block to adjust the height position of the placement block.
[0018] (III) Beneficial Effects
[0019] This utility model provides a high-precision pipe cutting machine. By installing multiple saw blades on a wheel to correspond to each side of the pipe, and by designing an adjustment part to adjust the feed of the multiple saw blades so that the multiple saw blades can come into contact with or move away from the pipe, and by designing a drive part to drive the wheel to rotate so that the multiple saw blades that come into contact with the pipe can cut the pipe synchronously, the whole process does not require flipping the pipe, ensuring a flat cut, and effectively improving work efficiency and cutting accuracy. Attached Figure Description
[0020] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0021] Figure 1 A schematic diagram of the overall structure of this utility model is shown. Figure 1 ;
[0022] Figure 2A schematic diagram of the overall structure of this utility model is shown. Figure 2 ;
[0023] Figure 3 A schematic diagram of the feeding mechanism of this utility model is shown;
[0024] Figure 4 A schematic diagram of the cutting mechanism of this utility model is shown;
[0025] Figure 5 It shows Figure 4 Rear view;
[0026] Figure 6 It shows Figure 5 BB section view;
[0027] Figure 7 An exploded view of the cutting mechanism of this utility model is shown. Figure 1 ;
[0028] Figure 8 An exploded view of the cutting mechanism of this utility model is shown. Figure 2 ;
[0029] Figure 9 An exploded view of the cutting mechanism of this utility model is shown. Figure 3 ;
[0030] Figure 10 An exploded view of part of the structure of this utility model is shown.
[0031] In the diagram: 1. Machine body, 11. Shaft column, 12. Guide rail, 2. Cutting mechanism, 21. Wheel, 210. Cutting station, 211. Slide groove, 22. Saw blade, 221. Carrier plate, 2210. Slider, 23. Adjustment part, 231. Screw, 232. Bevel gear, 233. Fixed plate, 2330. Tooth, 24. Drive part, 241. First motor, 2410. First gear, 242. Driven gear, 3. Positioning mechanism, 31. First parallel cylinder, 32. First clamping plate, 33. First clamping block, 330. First clamping mouth, 4. Feeding mechanism, 41. Guide seat, 42. Rack, 43. Second motor, 430. Second gear, 44. Second parallel cylinder, 45. Second clamping plate, 46. Second clamping block, 460. Second clamping mouth, 5. Lifting mechanism, 51. Placement block, 510. V-shaped opening, 52. Height adjustment part, 521. Base, 522. Handwheel, 523. Gear, P. Pipe. Detailed Implementation
[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this application. It is understood that the accompanying drawings are provided for reference and illustration only, and are not intended to limit this application. The connection relationships shown in the accompanying drawings are only for clear description and do not limit the connection method.
[0033] See appendix Figure 1 - Appendix Figure 8 A high-precision pipe cutting machine includes a machine body 1 and a cutting mechanism 2. The cutting mechanism 2 includes a wheel 21, saw blades 22, an adjustment unit 23, and a drive unit 24. The wheel 21 is rotatably mounted on the machine body 1 and has a cutting station 210 inside it. Multiple saw blades 22 are arranged in a circumferential array on the wheel 21, and all saw blades 22 are located in the cutting station 210 and are slidably connected to the wheel 21. The adjustment unit 23 is mounted on the wheel 21 and is driven to drive the multiple saw blades 22 to move toward the center of the cutting station 210 to abut or move away from the pipe P. The drive unit 24 is mounted on the machine body 1 and is driven to drive the wheel 21 to rotate, thereby driving the multiple saw blades 22 to cut the pipe P synchronously.
[0034] Specifically, in use, the pipe P is first coaxially inserted into the cutting station 210. Then, the adjustment unit 23 drives multiple saw blades 22 to abut against the pipe P. The drive unit 24 then drives the wheel 21 to rotate, so that the wheel 21 drives multiple saw blades 22 to cut the pipe P synchronously. During the cutting process, if the wall thickness of the pipe P is large, the saw blades 22 cannot cut the pipe P in one go. At this time, the feed of multiple saw blades 22 needs to be adjusted intermittently according to the needs, so that multiple saw blades 22 gradually move closer to each other and cut the pipe P. After the cutting is completed, the adjustment unit 23 drives multiple saw blades 22 to expand away from the pipe P. After the cut pipe P is taken out, the pipe P to be cut is inserted into the cutting station 210 again, and then the above operation is repeated.
[0035] In summary, this utility model, by installing multiple saw blades 22 on the wheel 21 to correspond to each side of the pipe P, and by designing an adjustment part 23 to adjust the feed of the multiple saw blades 22 so that the multiple saw blades 22 can abut or move away from the pipe P, and by designing a drive part 24 to drive the wheel 21 to rotate so that the multiple saw blades 22 abutting the pipe P can cut the pipe P synchronously, the entire process does not require flipping the pipe P, ensuring a flat cut, and effectively improving work efficiency and cutting accuracy.
[0036] See appendix Figure 5 - Appendix Figure 10The wheel 21 has a circumferential array of multiple grooves 211 extending toward the cutting station 210. Each saw blade 22 is connected to a carrier plate 221 with a slider 2210. The sliders 2210 are slidably installed in the grooves 211 so that the saw blades 22 can be slidably installed on the wheel 21. The adjustment part 23 includes multiple screws 231, which are rotatably installed in the grooves 211 and threadedly connected to the sliders 2210. Rotating the screws 231 drives the sliders 2210 to move along the grooves 211.
[0037] Specifically, when it is necessary to adjust the relative positions between multiple saw blades 22 and the pipe P, the multiple screws 231 are rotated one by one so that each slider 2210 moves along the corresponding groove 211, so that the saw blades 22 mounted on the carrier plate 221 move toward the center of the cutting station 210 to abut or move away from the pipe P.
[0038] See appendix Figure 5 -Appendix Figure 10 The saw blade 22 is circular and is rotatably connected to the carrier plate 221. This design ensures that during the cutting process, all sides of the saw blade 22 are in contact with the pipe P, so as to give full play to the function of the saw blade 22 and extend the service life of the saw blade 22.
[0039] See appendix Figure 5 -Appendix Figure 10 The screw 231 can be manually rotated by a worker using tools, or it can be driven by an independent motor (not shown in the figure). Since there are various driving methods, this utility model does not limit this. In this embodiment, the adjustment part 23 also includes a bevel gear 232 and a fixed plate 233. Multiple bevel gears 232 are provided and located in the cutting station 210, and multiple bevel gears 232 are coaxially fixed to multiple screws 231. The fixed plate 233 is provided in the cutting station 210 and fixed to the machine body 1, and the fixed plate 233 is provided with teeth 2330 that can mesh with the bevel gears 232.
[0040] Specifically, when the drive unit 24 drives the wheel 21 to rotate, the wheel 21 drives multiple bevel gears 232 to contact the teeth 2330 and move around the axis. After the wheel 21 rotates to a certain angle, the teeth 2330 on the fixed plate 233 approach and mesh one by one, moving each bevel gear 232 to drive the corresponding screw 231 to rotate, thereby causing the slider 2210 to move towards the cutting station 210 to automatically adjust the feed of the saw blade 22. This ensures that the position of the saw blade 22 is automatically adjusted to adapt to the pipe P during the cutting process, improving the degree of automation and ensuring the user experience.
[0041] Furthermore, the teeth 2330 are arranged in a circumferential array on the fixed disk 233, and each tooth 2330 corresponds to a multiple bevel gear 232. Under this design, when the disk 21 rotates, each tooth 2330 can synchronously drive multiple bevel gears 232 to rotate, thereby enabling multiple screws 231 to rotate synchronously to ensure that the feeding timing of multiple saw blades 22 is consistent, so as to reduce the risk of saw blades 22 jamming and improve cutting stability and cutting accuracy.
[0042] See appendix Figure 5 - Appendix Figure 10 The machine body 1 is provided with a shaft column 11, and a fixed disk 233 is coaxially fixed to the shaft column 11. The drive unit 24 includes a first motor 241 and a driven gear 242. The driven gear 242 is coaxially mounted on the wheel disk 21 and sleeved on the shaft column 11 so that the wheel disk 21 is rotatably mounted on the machine body 1. The first motor 241 is mounted on the machine body 1, and a first gear 2410 that meshes with the driven gear 242 is mounted on the output shaft of the first motor 241.
[0043] Specifically, in use, the first motor 241 is started to drive the first gear 2410 to rotate. The first gear 2410 drives the driven gear 242, causing the wheel 21 to rotate around the shaft 11, while the fixed disk 233 is stationary, so that the teeth 2330 can properly mesh and move the bevel gear 232 mounted on the wheel 21.
[0044] It should be noted that there are various ways to rotate the wheel 21 and the body 1, as well as various structures of the drive unit 24, and this utility model does not impose any restrictions on these.
[0045] See appendix Figure 1 - Appendix Figure 7 The present invention also includes a positioning mechanism 3, which includes a first parallel cylinder 31 and a first clamping plate 32. The first parallel cylinder 31 is mounted on the machine body 1 and located next to the wheel 21. The first clamping plate 32 has two pieces and is mounted on the two arms of the first parallel cylinder 31. The first clamping blocks 33 with first clamping openings 330 are detachably mounted on the two first clamping plates 32. The first clamping openings 330 of the two first clamping blocks 33 cooperate with each other and are coaxially designed with the wheel 21.
[0046] Specifically, when the pipe P is inserted into the cutting station 210, the first parallel cylinder 31 drives the two first clamping plates 32 to move closer to each other so that the two first clamping mouths 330 clamp and fix the pipe P, thereby ensuring that the pipe P is located in the center of the cutting station 210 and is in a stationary state, so as to facilitate the simultaneous cutting of the pipe P by multiple saw blades 22.
[0047] See appendix Figure 1 - Appendix Figure 7The positioning mechanism 3 has two sets located on the front and rear sides of the wheel 21 respectively, to clamp or release the pipe P synchronously; the first clamping block 33 has various specifications, and the first clamping block 33 of different specifications has a first clamping opening 330 of different diameters to accommodate clamping pipes P of different diameters.
[0048] Specifically, the positioning mechanism 3 has two sets that can simultaneously clamp both ends of the pipe P to prevent the pipe P from shaking during the cutting process and improve cutting stability; while the first clamping block 33 has a variety of specifications, which makes it convenient for workers to change the first clamping block 33 of the corresponding specifications according to the diameter of the pipe P to be cut, thereby facilitating the fixing and cutting of pipes P of different diameters and improving versatility.
[0049] See appendix Figure 1 - Appendix Figure 3 The present invention also includes a feeding mechanism 4, which includes a guide seat 41, a rack 42, a second motor 43, a second parallel cylinder 44, and a second clamping plate 45. The machine body 1 is provided with a guide rail 12 extending to the cutting station 210. The guide seat 41 is slidably connected to the guide rail 12. The rack 42 is installed on the machine body 1 and extends to the cutting station 210. The second motor 43 is installed on the guide seat 41, and a second gear 430 that meshes with the rack 42 is installed on the output shaft of the second motor 43. The second parallel cylinder 44 is installed on the guide seat 41. The second clamping plate 45 is provided in two pieces and is installed on the two arms of the second parallel cylinder 44. The two second clamping plates 45 are detachably installed with second clamping blocks 46 having second clamping openings 460. The two second clamping openings 460 cooperate with each other and are coaxially designed with the two first clamping openings 330.
[0050] Specifically, in use, the second parallel cylinder 44 first drives the two second clamping plates 45 to move closer together, so that the two second clamping mouths 460 clamp and fix the pipe P. Then, the second motor 43 drives the second gear 430 to rotate, so that the guide seat 41 moves along the guide rail 12, thereby conveying the pipe P to the cutting station 210. After the pipe P enters the cutting station 210, the first parallel cylinder 31 drives the two second clamping plates 45 to move closer together, so that the two first clamping mouths 330 clamp and fix the pipe P, and the cutting operation can be carried out. Therefore, the feeding mechanism 4 works in conjunction with the positioning mechanism 3 to enable the pipe P to be automatically conveyed and automatically fixed, further improving the degree of automation.
[0051] See appendix Figure 1 - Appendix Figure 3 The present invention also includes a lifting mechanism 5, which includes a placement block 51 and a height adjustment part 52. The placement block 51 is provided with a V-shaped opening 510 for placing the pipe P. The height adjustment part 52 is installed on the body 1 and drivenly connected to the placement block 51 to adjust the height position of the placement block 51.
[0052] Specifically, before use, the pipe P is placed in the V-shaped opening 510 of the storage block 51, and then the height of the storage block 51 is adjusted by the height adjustment part 52 until the pipe P is coaxially aligned with the axes of the two first clamping openings 330 and the two second clamping openings 460. Therefore, the design of the lifting mechanism 5 makes it convenient for workers to adjust the placement position of the pipe P, thereby facilitating the clamping and fixing of the material loosening mechanism and the material conveying. The design of the V-shaped opening 510 allows the storage block 51 to accommodate pipes P of various diameters.
[0053] See appendix Figure 1 - Appendix Figure 3 The height adjustment unit 52 includes a base 521, a handwheel 522, a rack 523, and a drive gear (not shown in the figure). The base 521 is mounted on the body 1. The rack 523 is vertically and slidably mounted on the base 521 and is fixedly connected to the storage block 51. The drive gear is rotatably mounted in the base 521 and meshes with the rack 523. The handwheel 522 is rotatably mounted on the base 521 and is fixedly connected to the drive connection. By rotating the handwheel 522 to drive the drive gear to rotate, the rack 523 can be moved up and down in the vertical direction, thereby adjusting the height position of the storage block 51.
[0054] It should be noted that, in addition to the above-mentioned structure, the height adjustment part 52 can also adopt other structures, such as a cylinder (not shown in the figure) or a lead screw motor (not shown in the figure) with a moving stroke. Since the relevant structures are relatively conventional, this utility model does not impose any restrictions on them.
[0055] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A high-precision pipe cutting machine, characterized in that, The system includes a body (1) and a cutting mechanism (2): the cutting mechanism (2) includes a wheel (21), saw blades (22), an adjustment unit (23), and a drive unit (24); the wheel (21) is rotatably mounted on the body (1) and has a cutting station (210) inside; multiple saw blades (22) are arranged in a circumferential array on the wheel (21), and all of the saw blades (22) are located within the cutting station (210) and are connected to the wheel (21). Sliding connection; the adjusting part (23) is installed on the wheel (21) and driven to connect with the plurality of saw blades (22) to drive the plurality of saw blades (22) to move toward the center of the cutting station (210) to abut or move away from the pipe (P); the driving part (24) is installed on the machine body (1) and driven to connect with the wheel (21) to drive the wheel (21) to rotate and drive the plurality of saw blades (22) to cut the pipe (P) synchronously.
2. The high-precision pipe cutting machine according to claim 1, characterized in that, The wheel (21) has a plurality of grooves (211) arranged in a circular array extending toward the cutting station (210). Each of the saw blades (22) is connected to a carrier plate (221) with a slider (2210). Each of the sliders (2210) is slidably installed in the grooves (211) so that each of the saw blades (22) can be slidably installed on the wheel (21). The adjusting part (23) includes a plurality of screws (231). Each of the screws (231) is rotatably installed in the grooves (211) and threadedly connected to each of the sliders (2210). Rotating the screws (231) drives the sliders (2210) to move along the grooves (211) so that the saw blades (22) move toward the center of the cutting station (210) and abut against or move away from the pipe (P).
3. A high-precision pipe cutting machine according to claim 2, characterized in that, The saw blade (22) is circular and is rotatably connected to the carrier plate (221).
4. A high-precision pipe cutting machine according to claim 2, characterized in that, The adjustment unit (23) further includes bevel gears (232) and a fixed disk (233). Multiple bevel gears (232) are provided and located in the cutting station (210), and multiple bevel gears (232) are coaxially fixed to multiple screws (231). The fixed disk (233) is provided in the cutting station (210) and fixed to the machine body (1), and the fixed disk (233) is provided with teeth (2330) that can mesh with the bevel gears (232). When the multiple bevel gears (232) are driven to contact the teeth (2330) by rotating the wheel disk (21), the teeth (2330) approach and mesh with the bevel gears (232) to drive the corresponding screws (231) to rotate.
5. A high-precision pipe cutting machine according to claim 4, characterized in that, The teeth (2330) are arranged in a circumferential array on the fixed disk (233), and the teeth (2330) correspond one-to-one with the bevel gears (232) to drive the screws (231) to rotate synchronously.
6. A high-precision pipe cutting machine according to claim 4, characterized in that, The machine body (1) is provided with a shaft column (11), and the fixed disk (233) is coaxially fixed to the shaft column (11). The drive unit (24) includes a first motor (241) and a driven gear (242). The driven gear (242) is coaxially mounted on the wheel disk (21) and sleeved on the shaft column (11) so that the wheel disk (21) is rotatably mounted on the machine body (1). The first motor (241) is mounted on the machine body (1), and a first gear (2410) that meshes with the driven gear (242) is mounted on the output shaft of the first motor (241).
7. A high-precision pipe cutting machine according to claim 1, characterized in that, It also includes a positioning mechanism (3), which includes a first parallel cylinder (31) and a first clamping plate (32). The first parallel cylinder (31) is installed on the machine body (1) and located next to the wheel (21). The first clamping plate (32) has two pieces and is installed on the two arms of the first parallel cylinder (31). The first clamping blocks (33) with first clamping mouths (330) are detachably installed on the two first clamping plates (32). The first clamping mouths (330) of the two first clamping blocks (33) cooperate with each other and are designed to be coaxial with the wheel (21). The pipe (P) extends into the cutting station (210). The first parallel cylinder (31) drives the two first clamping plates (32) to move closer to each other so that the two first clamping mouths (330) clamp and fix the pipe (P), thereby ensuring that the pipe (P) is located at the center of the cutting station (210).
8. A high-precision pipe cutting machine according to claim 7, characterized in that, The positioning mechanism (3) has two sets located on the front and rear sides of the wheel (21) respectively, to clamp or release the pipe (P) synchronously; the first clamping block (33) has multiple specifications, and the first clamping block (33) of different specifications has a first clamping opening (330) of different diameters to accommodate clamping pipes (P) of different diameters.
9. A high-precision pipe cutting machine according to claim 7, characterized in that, It also includes a feeding mechanism (4), which includes a guide seat (41), a rack (42), a second motor (43), a second parallel cylinder (44), and a second clamping plate (45). The machine body (1) is provided with a guide rail (12) extending toward the cutting station (210). The guide seat (41) is slidably connected to the guide rail (12), the rack (42) is mounted on the machine body (1) and extends to the cutting station (210), the second motor (43) is mounted on the guide seat (41), and a second gear (430) that meshes with the rack (42) is mounted on the output shaft of the second motor (43); the second parallel cylinder (44) is mounted on the guide seat (41), the second clamping plate (45) has two pieces and is mounted on the two arms of the second parallel cylinder (44), and a second clamping block (46) with a second clamping mouth (460) can be detachably mounted on both second clamping plates (45), the two second clamping mouths (460) cooperate with each other and are coaxially designed with the two first clamping mouths (330); The second parallel cylinder (44) drives the two second clamping plates (45) to move closer together so that the two second clamping jaws (460) clamp and fix the pipe (P). The second motor (43) drives the second gear (430) to rotate so that the guide seat (41) moves along the guide rail (12) and thus transports the pipe (P) to the cutting station (210).
10. A high-precision pipe cutting machine according to any one of claims 7-9, characterized in that, It also includes a lifting mechanism (5), which includes a placement block (51) and a height adjustment part (52). The placement block (51) is provided with a V-shaped opening (510) for placing the pipe (P). The height adjustment part (52) is installed on the body (1) and drivenly connected to the placement block (51) to adjust the height position of the placement block (51).