Intelligent polishing machine for metal bent pipe

Abstract

The application belongs to the technical field of metal elbow pipe processing, and particularly relates to an intelligent polishing machine for metal elbow pipes. The polishing machine comprises polishing mechanisms and a plurality of clamping mechanisms. The polishing mechanism comprises a rotating shaft arranged vertically and capable of rotating around its own axis, a horizontal mounting plate fixedly connected to the top end of the rotating shaft, a horizontal displacement assembly mounted on the horizontal mounting plate, a mounting frame in transmission connection with the horizontal displacement assembly, a polishing assembly mounted on the mounting frame, and a first rotating assembly for driving the polishing assembly to rotate slowly around the horizontal axis. A circular polishing avoidance channel is horizontally arranged on the mounting frame. The polishing machine can polish metal elbow pipes with different curvatures and different sizes, realize full-section polishing of the metal elbow pipes, improve polishing efficiency, and expand the polishing range.

Description

Technical Field

[0001] This invention relates to the field of metal pipe bending technology, specifically to an intelligent polishing machine for metal pipe bending. Background Technology

[0002] Metal pipe bending is performed using complete sets of bending equipment, divided into cold bending and hot pushing processes. Regardless of the type of machinery or pipeline, most systems utilize pipe bending, primarily for oil, gas, and liquid transportation, as well as in engineering bridge construction. Metal pipes can be made of materials such as carbon steel, alloy steel, stainless steel, cast steel, alloy steel, and manganese steel. Traditional polishing methods for cast metal pipes are labor-intensive, inefficient, and do not guarantee polishing quality due to the complex and irregular shapes of the pipes. Furthermore, traditional polishing methods for cast metal pipes cannot achieve all-around polishing after clamping; the contact between the pipe and the clamping area affects the polishing process, making automated mechanized operation impossible.

[0003] A metal tube polishing machine, as disclosed in Chinese Patent Publication No. CN111604798A, includes a fixed base, a mounting rod, a support device, a drive motor, and a polishing device. The mounting rod is mounted on the upper end of the fixed base, and the support device is slidably fitted onto the upper end of the mounting rod. The drive motor is mounted on the front upper part of the fixed base, and the polishing device is mounted on the output shaft of the drive motor. This invention solves the problems of traditional metal tube polishing methods after casting. Because metal tubes are complex and irregular in shape, polishing is typically done by hand on a rotating abrasive belt. This method is not only labor-intensive and inefficient, but also fails to guarantee polishing quality. Furthermore, traditional metal tube polishing methods after casting cannot perform all-around polishing after clamping the metal tube, and the contact between the metal tube and the clamping position affects the polishing process. Finally, it cannot achieve automated mechanized operation.

[0004] While the aforementioned equipment solves the problem of not being able to automate the operation at the clamping position during metal pipe polishing, it is limited in its application range. For circumferential polishing of the same outer ring of the pipe to improve the polishing effect, the metal pipe often has a straight section at its end during processing. The aforementioned polishing equipment can only process pure bends and cannot polish metal bends with different bending angles or with a partial straight section at the end. Summary of the Invention

[0005] Based on this, it is necessary to provide an intelligent polishing machine for metal pipe bending to address the existing technical problems. The equipment of this application can perform polishing operations on metal pipe bending with different curvatures and sizes, and realize the polishing of the entire section of the metal pipe bending.

[0006] To solve the problems of the prior art, the technical solution adopted by the present invention is as follows:

[0007] This invention provides an intelligent polishing machine for bending metal pipes, including a polishing mechanism and several sets of clamping mechanisms. The polishing mechanism includes a vertically arranged rotating shaft capable of rotating around its own axis, a horizontal mounting plate with one end fixedly connected to the top of the rotating shaft, a horizontal displacement component mounted on the horizontal mounting plate, a mounting frame driven by the horizontal displacement component, a polishing component mounted on the mounting frame, and a first rotating component that drives the polishing component to rotate slowly around the horizontal axis. The transmission direction of the horizontal displacement component is consistent with the length direction of the horizontal mounting plate. A circular polishing clearance channel is horizontally provided on the mounting frame. The first rotating component is mounted on the side wall of the mounting frame and is driven by the polishing component.

[0008] Preferably, the polishing mechanism further includes a rotating frame, which is rotatably mounted on the mounting frame around the polishing clearance channel axis, and the polishing assembly is mounted on the rotating frame, with the first rotating assembly being drively connected to the rotating frame.

[0009] Preferably, the first rotating assembly includes a first drive motor, a transmission gear, a driven gear, and a rotating disk. The first drive motor is fixedly mounted on one side wall of the mounting frame. The output end of the first drive motor is connected to the transmission gear. The rotating disk and the driven gear are both vertically rotatable inside the mounting frame. The rotating frame is located between the rotating disk and the driven gear. The transmission gear meshes with the driven gear. The rotating disk and the driven gear are both coaxially arranged with the polishing clearance channel on the mounting frame. The transmission gear is smaller than the driven gear. The two sides of the rotating frame are fixedly connected to the rotating disk and the driven gear, respectively.

[0010] Preferably, the polishing assembly includes a drive roller, a tension roller, a polishing belt, and a rotary drive device. The axes of the drive roller and the tension roller are both horizontally arranged. The drive roller is mounted on the rotating frame in a way that allows it to be raised and lowered. There are two tension rollers, which are located on both sides of the drive roller. The polishing belt is sleeved between the drive roller and the two tension rollers. The part of the polishing belt that passes through the polishing avoidance channel is used to polish the metal bend.

[0011] Preferably, the polishing assembly further includes a linear driver and a lifting frame. The linear driver is vertically installed in the middle of the lower half of the rotating frame. The output direction of the linear driver is perpendicular to the axial direction of the polishing clearance channel. The output end of the linear driver is fixedly connected to the lifting frame. The upper half of the rotating frame is provided with a vertical slide groove for the lifting frame to slide. The lifting frame is slidably arranged in the vertical slide groove. The drive roller is rotatably arranged on the lifting frame along the length direction of the lifting frame. The rotary drive device is installed in the lifting frame and is connected to the drive roller in a transmission connection.

[0012] Preferably, the rotary drive device includes a bidirectional rotary driver and a synchronous belt drive. The bidirectional rotary driver is fixedly installed below the lifting frame. The synchronous belt drive has two sets located at both ends of the bidirectional rotary driver. One end of the synchronous belt drive is connected to one of the output ends of the bidirectional rotary driver, and the other end of the synchronous belt drive is connected to one end of the drive roller.

[0013] Preferably, the polishing assembly further includes a sliding frame and a tension spring. The sliding frame is horizontally slidable on the rotating frame. The rotating frame is provided with a horizontal groove for the sliding frame to slide. The tension spring is horizontally disposed in the horizontal groove. One end of the tension spring is fixedly connected to the bottom of the groove near the end of the rotating frame, and the other end of the tension spring is fixedly connected to the sliding frame.

[0014] Preferably, the polishing assembly also includes a pressure sensor installed in a horizontal groove, the pressure sensor being installed at the bottom of the horizontal groove and the detection end being in contact with the tension spring.

[0015] Preferably, the mounting bracket has an energized copper ring coaxially arranged with the rotating disk on its inner side wall near the rotating disk, and a brush is provided on the side wall of the rotating disk. The brush abuts against the energized copper ring and is electrically connected to the linear drive and the bidirectional rotary drive.

[0016] Preferably, the polishing mechanism further includes a second rotary drive assembly mounted on the horizontal displacement assembly, the horizontal displacement assembly being drivenly connected to the second rotary drive assembly, and a mounting bracket mounted on the second rotary drive assembly, the mounting bracket being drivenly connected to the second rotary drive assembly.

[0017] The advantages of this invention compared to the prior art are:

[0018] 1. This application uses a horizontal displacement component to move the mounting bracket to different positions on a horizontal mounting plate, enabling the equipment to polish metal bends of different curvatures and sizes, achieving full-section polishing of the metal bends and improving the applicability of the equipment.

[0019] 2. When the polishing assembly is working, the rotary drive device drives the drive roller connected to it to rotate, which in turn drives the polishing belt sleeved on the drive roller and tension roller to move. The inner wall of the polishing belt is sleeved on the metal bend tube. The movement of the polishing belt achieves the polishing effect on the metal bend tube. After the polishing belt at the bottom is sleeved on the metal bend tube, the tension roller can tighten the polishing belt to both sides, so that the polishing belt is in close contact with the outer wall of the metal bend tube, thereby realizing the polishing process. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of an intelligent polishing machine for bending metal pipes;

[0021] Figure 2 This is a top view of an intelligent polishing machine for bending metal pipes;

[0022] Figure 3 This is a front view of an intelligent polishing machine for bending metal pipes;

[0023] Figure 4 This is a three-dimensional structural diagram of a mounting frame, polishing assembly, first rotating assembly, and rotating frame in an intelligent polishing machine for bending metal pipes.

[0024] Figure 5 This is a front view of the mounting bracket, polishing assembly, first rotating assembly, and rotating frame in an intelligent polishing machine for bending metal pipes.

[0025] Figure 6 This is a three-dimensional structural diagram of the first rotating component in an intelligent polishing machine for bending metal pipes;

[0026] Figure 7 This is a three-dimensional structural diagram of the rotating disk in an intelligent polishing machine for bending metal pipes;

[0027] Figure 8 This is a three-dimensional structural diagram of the polishing components and rotating frame in an intelligent polishing machine for bending metal pipes;

[0028] Figure 9 This is a front view of the polishing components and rotating frame in an intelligent polishing machine for bending metal pipes;

[0029] Figure 10 This is a three-dimensional structural diagram of the polishing component in an intelligent polishing machine for bending metal pipes;

[0030] Figure 11 This is a side view of the polishing component in an intelligent polishing machine for bending metal pipes.

[0031] The numbers on the map are:

[0032] 1-Shaft;

[0033] 2-Horizontal mounting plate;

[0034] 3-Horizontal displacement component;

[0035] 4-Mounting bracket;

[0036] 41 - Polishing clearance passage;

[0037] 5-Polishing components;

[0038] 51-Drive roller;

[0039] 52 - Tensioning roller;

[0040] 53-Polishing belt;

[0041] 54-Rotary drive device; 541-Bidirectional rotary drive; 542-Synchronous belt drive device;

[0042] 55-Linear Driver;

[0043] 56-Lifting frame;

[0044] 57-Sliding frame;

[0045] 58 - Tensioning spring;

[0046] 59 - Pressure sensor;

[0047] 6-First rotating component;

[0048] 61 - First drive motor;

[0049] 62-Transmission gear;

[0050] 63 - Driven gear;

[0051] 64-Rotating disk; 641-Electrified copper ring; 642-Brush;

[0052] 7-Rotating frame;

[0053] 71-Vertical groove;

[0054] 72-Horizontal chute;

[0055] 8-Second rotary drive assembly. Detailed Implementation

[0056] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0057] like Figures 1-5 The intelligent polishing machine for bending metal pipes shown includes a polishing mechanism and several sets of clamping mechanisms. The polishing mechanism includes a vertically arranged rotating shaft 1 that can rotate around its own axis, a horizontal mounting plate 2 with one end fixedly connected to the top of the rotating shaft 1, a horizontal displacement component 3 mounted on the horizontal mounting plate 2, a mounting frame 4 that is driven by the horizontal displacement component 3, a polishing component 5 mounted on the mounting frame 4, and a first rotating component 6 that drives the polishing component 5 to rotate slowly around the horizontal axis. The transmission direction of the horizontal displacement component 3 is consistent with the length direction of the horizontal mounting plate 2. The mounting frame 4 is provided with a circular polishing clearance channel 41 horizontally. The first rotating component 6 is mounted on the side wall of the mounting frame 4 and is driven by the polishing component 5.

[0058] Several sets of clamping mechanisms clamp the metal bend. During the rotation of the rotating shaft 1, the horizontal mounting plate 2 installed with it moves around the axis of the rotating shaft 1. The horizontal displacement component 3 on the horizontal mounting plate 2 drives the mounting frame 4 to move to the polishing station. The polishing component 5 installed on the mounting frame 4 polishes the metal bend clamped by the several sets of clamping mechanisms. During the polishing process, the first rotating component 6 drives the polishing component 5 set in the mounting frame 4 to rotate around the axis of the polishing avoidance channel 41. During the rotation, the bend is polished in all directions with fine polishing to improve the polishing effect. After the horizontal mounting plate 2 rotates to a certain angle, the clamping mechanism that blocks the polishing avoids the polishing component 5, realizing the full-section polishing of the metal bend.

[0059] This application uses the horizontal displacement component 3 to move the mounting bracket 4 to different positions on the horizontal mounting plate 2, enabling the equipment to perform polishing operations on metal bends of different curvatures and sizes, thus improving the applicability of the equipment.

[0060] like Figures 1-5 As shown, the polishing mechanism also includes a rotating frame 7, which is rotatably mounted on the mounting frame 4 around the axis of the polishing clearance channel 41. The polishing assembly 5 is mounted on the rotating frame 7, and the first rotating assembly 6 is connected to the rotating frame 7 in a transmission manner.

[0061] The first rotating component 6 drives the rotating frame 7, which is connected to it, to rotate around the axis of the polishing avoidance channel 41. This, in turn, drives the polishing component 5 installed on the rotating frame 7 to perform annular polishing around the bending position of the metal tube, so that it can still achieve a good polishing effect on the inside of the bend.

[0062] like Figures 5-6 As shown, the first rotating assembly 6 includes a first drive motor 61, a transmission gear 62, a driven gear 63, and a rotating disk 64. The first drive motor 61 is fixedly mounted on one side wall of the mounting frame 4. The output end of the first drive motor 61 is connected to the transmission gear 62. The rotating disk 64 and the driven gear 63 are both vertically rotatably arranged inside the mounting frame 4. The rotating frame 7 is located between the rotating disk 64 and the driven gear 63. The transmission gear 62 meshes with the driven gear 63. The rotating disk 64 and the driven gear 63 are both coaxially arranged with the polishing clearance channel 41 on the mounting frame 4. The transmission gear 62 is smaller than the driven gear 63. The two sides of the rotating frame 7 are fixedly connected to the rotating disk 64 and the driven gear 63, respectively.

[0063] When the first rotating component 6 is working, the first drive motor 61 drives the transmission gear 62 to rotate. The transmission gear 62 rotates on one side of the mounting frame 4, which drives the driven gear 63 meshing with it to rotate slowly, thereby driving the rotating frame 7 fixedly connected to it to rotate synchronously. The rotating frame 7 drives the polishing component 5 installed on it to rotate synchronously, thus realizing the rotation drive function of the polishing component 5. The rotating disk 64 is installed on the other side of the mounting frame 4 to maintain the stability of the rotating disk 64 when rotating and improve the polishing stability.

[0064] like Figure 5 and Figures 8-11 As shown, the polishing assembly 5 includes a drive roller 51, a tension roller 52, a polishing belt 53, and a rotary drive device 54. The axes of the drive roller 51 and the tension roller 52 are both horizontally arranged. The drive roller 51 is mounted on the rotating frame 7 in a height-adjustable manner. There are two tension rollers 52, which are located on both sides of the drive roller 51. The polishing belt 53 is sleeved between the drive roller 51 and the two tension rollers 52. The part of the polishing belt 53 that passes through the polishing avoidance channel 41 is used to polish the metal bend.

[0065] When the polishing assembly 5 is working, the rotary drive device 54 drives the drive roller 51 connected to it to rotate, which in turn drives the polishing belt 53, which is sleeved on the drive roller 51 and the tension roller 52, to move. The inner wall of the polishing belt 53 is sleeved on the metal bend tube. The polishing effect on the metal bend tube is achieved by the movement of the polishing belt 53. After the polishing belt 53 at the bottom is sleeved on the metal bend tube, the tension roller 52 can tighten the polishing belt 53 to both sides, so that the polishing belt 53 is in close contact with the outer wall of the metal bend tube, thereby realizing the polishing process.

[0066] like Figure 5 and Figures 8-11 As shown, the polishing assembly 5 also includes a linear driver 55 and a lifting frame 56. The linear driver 55 is vertically installed in the middle of the lower half of the rotating frame 7. The output direction of the linear driver 55 is perpendicular to the axial direction of the polishing clearance channel 41. The output end of the linear driver 55 is fixedly connected to the lifting frame 56. The upper half of the rotating frame 7 is provided with a vertical slide groove 71 for the lifting frame 56 to slide. The lifting frame 56 is slidably arranged in the vertical slide groove 71. The drive roller 51 is rotatably arranged on the lifting frame 56 along the length direction of the lifting frame 56. The rotary drive device 54 is installed in the lifting frame 56 and is connected to the drive roller 51 in a transmission manner.

[0067] The output of the linear actuator 55 can control the lifting frame 56 to slide in the vertical slide groove 71, and move the drive roller 51 installed on the lifting frame 56 away from the two tension rollers 52, thereby tightening the polishing belt 53. This makes the length of the polishing part of the lower polishing belt 53 adjustable, which is convenient for matching bent pipes of different diameters and lengths, and improves the application range of the equipment.

[0068] like Figure 11 As shown, the rotary drive device 54 includes a bidirectional rotary driver 541 and a synchronous belt drive device 542. The bidirectional rotary driver 541 is fixedly installed below the lifting frame 56. The synchronous belt drive device 542 is provided in two sets and is located at both ends of the bidirectional rotary driver 541 respectively. One end of the synchronous belt drive device 542 is connected to one of the output ends of the bidirectional rotary driver 541, and the other end of the synchronous belt drive device 542 is connected to one end of the drive roller 51.

[0069] The bidirectional rotary driver 541 in the rotary drive device 54 drives the synchronous transmission device connected to it to move, which in turn drives the drive roller 51 connected to the synchronous transmission device to rotate, thereby realizing the driving function of the drive roller 51 and thus realizing the rotation function of the polishing operation.

[0070] like Figure 5 and Figures 8-11 As shown, the polishing assembly 5 also includes a sliding frame 57 and a tension spring 58. The sliding frame 57 is horizontally slidably mounted on the rotating frame 7. The rotating frame 7 is provided with a horizontal groove 72 for the sliding frame 57 to slide. The tension spring 58 is horizontally mounted in the horizontal groove 72. One end of the tension spring 58 is fixedly connected to the bottom of the groove 72 near the end of the rotating frame 7, and the other end of the tension spring 58 is fixedly connected to the sliding frame 57.

[0071] When the tensioning roller 52 tensions the polishing belt 53, the tensioning spring 58 pulls the sliding frame 57 to move away from the center of the rotating frame 7, thus achieving the tensioning function of the polishing belt 53 used for polishing at the lower end. At this time, the contact area between the polishing belt 53 and the metal bend is small. When the linear actuator 55 outputs and drives the drive roller 51 to move upward, the polishing belt 53 tightens and pulls the two tensioning rollers 52 to overcome the elastic force of the tensioning spring 58 and move closer to each other, so that the lower polishing belt 53 increases the wrapping range of the metal bend, thus further improving the polishing efficiency.

[0072] like Figure 10 As shown, the polishing assembly 5 also includes a pressure sensor 59 installed in the horizontal slide 72. The pressure sensor 59 is installed at the bottom of the horizontal slide 72 and its detection end is in contact with the tension spring 58.

[0073] The pressure sensor 59 installed in the horizontal slide 72 can detect the tension force on the tension spring 58, thereby determining the pull-out distance of the sliding frame 57. This allows the operator to make a comprehensive judgment on the tension and prevent the polishing belt 53 from breaking.

[0074] like Figure 7As shown, the mounting bracket 4 has an energized copper ring 641 coaxially arranged with the rotating disk 64 on its inner side wall near the rotating disk 64. The rotating disk 64 has a brush 642 on its side wall. The brush 642 abuts against the energized copper ring 641 and is electrically connected to the linear driver 55 and the bidirectional rotary driver 541.

[0075] The brush 642, in conjunction with the energized copper ring 641, enables the linear actuator 55 and the bidirectional rotary actuator 541 to be powered by the brush 642 as they rotate with the rotating frame 7.

[0076] like Figures 1-5 As shown, the polishing mechanism also includes a second rotary drive assembly 8 mounted on the horizontal displacement assembly 3, the horizontal displacement assembly 3 being connected to the second rotary drive assembly 8 in a transmission manner, and a mounting bracket 4 mounted on the second rotary drive assembly 8, the mounting bracket 4 being connected to the second rotary drive assembly 8 in a transmission manner.

[0077] When processing metal bends, their ends often have a straight section. When polishing the straight section at the end of the metal bend, a second rotary drive component 8 is added to the output end of the horizontal displacement component 3, so that the equipment can process the straight section of the metal bend.

[0078] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A smart polishing machine for bending metal pipes, comprising a polishing mechanism and several sets of clamping mechanisms, characterized in that, The polishing mechanism includes a vertically arranged rotating shaft (1) that can rotate around its own axis, a horizontal mounting plate (2) with one end fixedly connected to the top of the rotating shaft (1), a horizontal displacement component (3) mounted on the horizontal mounting plate (2), a mounting frame (4) that is connected to the horizontal displacement component (3) in a transmission, a polishing component (5) mounted on the mounting frame (4), and a first rotating component (6) that drives the polishing component (5) to rotate slowly around the horizontal axis. The transmission direction of the horizontal displacement component (3) is consistent with the length direction of the horizontal mounting plate (2). A circular polishing clearance channel (41) is provided horizontally on the mounting frame (4). The first rotating component (6) is installed on the side wall of the mounting frame (4). The first rotating component (6) is connected to the polishing component (5) in a transmission manner. The polishing mechanism also includes a rotating frame (7), which is rotatably mounted on the mounting frame (4) around the axis of the polishing clearance channel (41). The polishing assembly (5) is mounted on the rotating frame (7), and the first rotating assembly (6) is connected to the rotating frame (7) in a transmission manner. The polishing assembly (5) includes a drive roller (51), a tension roller (52), a polishing belt (53), and a rotary drive device (54). The axes of the drive roller (51) and the tension roller (52) are both horizontally arranged. The drive roller (51) is mounted on the rotating frame (7) in a way that allows it to be raised and lowered. There are two tension rollers (52), which are located on both sides of the drive roller (51). The polishing belt (53) is sleeved between the drive roller (51) and the two tension rollers (52). The part of the polishing belt (53) that passes through the polishing clearance channel (41) is used to polish the metal bend. The polishing assembly (5) also includes a linear driver (55) and a lifting frame (56). The linear driver (55) is vertically installed in the middle of the lower half of the rotating frame (7). The output direction of the linear driver (55) is perpendicular to the axial direction of the polishing clearance channel (41). The output end of the linear driver (55) is fixedly connected to the lifting frame (56). The upper half of the rotating frame (7) is provided with a vertical slide groove (71) for the lifting frame (56) to slide. The lifting frame (56) is slidably installed in the vertical slide groove (71). The drive roller (51) is rotatably installed on the lifting frame (56) along the length direction of the lifting frame (56). The rotary drive device (54) is installed in the lifting frame (56) and is connected to the drive roller (51) in a transmission manner.

2. The intelligent polishing machine for bending metal pipes according to claim 1, characterized in that, The first rotating assembly (6) includes a first drive motor (61), a transmission gear (62), a driven gear (63), and a rotating disk (64). The first drive motor (61) is fixedly mounted on one side wall of the mounting frame (4). The output end of the first drive motor (61) is connected to the transmission gear (62). The rotating disk (64) and the driven gear (63) are both vertically rotatable inside the mounting frame (4). The rotating frame (7) is located between the rotating disk (64) and the driven gear (63). The transmission gear (62) meshes with the driven gear (63). The rotating disk (64) and the driven gear (63) are both coaxially arranged with the polishing clearance channel (41) on the mounting frame (4). The transmission gear (62) is smaller than the driven gear (63). The two sides of the rotating frame (7) are fixedly connected to the rotating disk (64) and the driven gear (63) respectively.

3. The intelligent polishing machine for bending metal pipes according to claim 1, characterized in that, The rotary drive device (54) includes a bidirectional rotary driver (541) and a synchronous belt drive device (542). The bidirectional rotary driver (541) is fixedly installed below the lifting frame (56). The synchronous belt drive device (542) has two sets and is located at both ends of the bidirectional rotary driver (541). One end of the synchronous belt drive device (542) is connected to one of the output ends of the bidirectional rotary driver (541), and the other end of the synchronous belt drive device (542) is connected to one end of the drive roller (51).

4. The intelligent polishing machine for bending metal pipes according to claim 3, characterized in that, The polishing assembly (5) also includes a sliding frame (57) and a tension spring (58). The sliding frame (57) is horizontally slidably mounted on the rotating frame (7). The rotating frame (7) is provided with a horizontal groove (72) for the sliding frame (57) to slide. The tension spring (58) is horizontally mounted in the horizontal groove (72). One end of the tension spring (58) is fixedly connected to the bottom of the groove on the side of the horizontal groove (72) near the end of the rotating frame (7), and the other end of the tension spring (58) is fixedly connected to the sliding frame (57).

5. The intelligent polishing machine for bending metal pipes according to claim 4, characterized in that, The polishing assembly (5) also includes a pressure sensor (59) installed in a horizontal groove (72). The pressure sensor (59) is installed at the bottom of the horizontal groove (72) and its detection end is in contact with the tension spring (58).

6. The intelligent polishing machine for bending metal pipes according to claim 3, characterized in that, The mounting bracket (4) has an energized copper ring (641) on its inner side wall near the rotating disk (64) and is coaxially arranged with the rotating disk (64). The rotating disk (64) has a brush (642) on its side wall. The brush (642) abuts against the energized copper ring (641) and is electrically connected to the linear driver (55) and the bidirectional rotary driver (541).

7. A smart polishing machine for bending metal pipes according to any one of claims 1-6, characterized in that, The polishing mechanism also includes a second rotary drive assembly (8) mounted on a horizontal displacement assembly (3), the horizontal displacement assembly (3) being connected to the second rotary drive assembly (8) in a transmission connection, and a mounting bracket (4) mounted on the second rotary drive assembly (8), the mounting bracket (4) being connected to the second rotary drive assembly (8) in a transmission connection.

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