Large-diameter alloy pipe processing equipment and processing technology

Abstract

The present application relates to alloy pipe production technical field, and disclose a kind of large-diameter alloy pipe processing equipment and processing technology, including body, bracket, fixed ring, motor one, gear one, gear two, mounting seat, cylinder one, connecting cover, motor two, connecting table, the inside of the body is provided with linkage part and positioning part for alloy pipe stable conveying, this large-diameter alloy pipe processing equipment and processing technology, after the bottom end of push plate exceeds the bottom surface of limit block, spring four push back L-shaped rod again make the rotation of rotating rod and push back limit block push plate, make push plate be limited by limit block, so that push plate is no longer adhered to pipe body by the pull of support rod to arc block, then start cylinder two reset, so that arc block does not drive pipe body back, by repeatedly starting cylinder two, so that large-diameter alloy pipe is moved in one direction when moving ring follows moving seat moves each time, and the distance of each movement is same, play the effect of fixed-distance conveying pipe.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of alloy pipe production, in particular to a large-diameter alloy pipe machining equipment and machining process. BACKGROUND

[0002] Large-diameter alloy pipe, as the name implies, refers to alloy steel pipe with large diameter, high toughness and good corrosion resistance. This kind of steel pipe is usually composed of specific alloy elements and base metal, and through specific smelting and processing technology, it forms a pipe with excellent performance. Large-diameter alloy pipe has excellent mechanical properties and tensile strength, and can withstand various mechanical loads, and is an ideal choice for load-bearing structures and conveying pipes.

[0003] In the production of large-diameter alloy pipe, after the pipe is formed by melting and casting, the surface of the pipe needs to be polished. During polishing, the pipe is conveyed by a conveying roller, and then the pipe is fixed. First, the fixture for regulating the pipe will block part of the surface of the pipe and cannot be polished. After polishing the surface of the pipe, the fixture needs to be disassembled and the unpolished area needs to be polished again. However, during the process of clamping, disassembling and re-fixing, the axis of the pipe body is easily inclined, resulting in insufficient polishing precision, and it is not convenient to cooperate with the conveying device to realize continuous processing such as conveying, fixing and polishing. SUMMARY

[0004] The purpose of the present application is to provide a large-diameter alloy pipe machining equipment and machining process to solve the problems raised in the background.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a large-diameter alloy pipe machining equipment, comprising a machine body and a bracket, the inside of the machine body is provided with a linkage part and a positioning part for stable conveying of the alloy pipe, the linkage part comprises: a second air cylinder, the second air cylinder is fixedly connected with the surface of the machine body, the output shaft of the second air cylinder penetrates the machine body and is slidingly connected, the output shaft of the second air cylinder is fixedly connected with a moving seat, the moving seat is located on the inside of the machine body and is slidingly connected, the inside of the machine body is fixedly connected with a positioning rod, the positioning rod penetrates the moving seat and is slidingly connected, a first spring is fixedly connected between the moving seat and the bracket, a guide groove is formed in the inside of the moving seat, a moving ring is fixedly connected with the inside of the moving seat, and a fixed plate is fixedly connected with the inside of the moving ring;

[0006] The inside of the fixed plate penetrates and is slidingly connected with a support rod, one end of the support rod near the axis of the fixed plate is fixedly connected with an arc-shaped block, the bottom end of the support rod is fixedly connected with a push plate, the push plate penetrates the fixed plate and is slidingly connected, and a second spring is fixedly connected between the push plate and the inner wall of the fixed plate;

[0007] The surface of the push plate is fixedly connected with a hinge block, the inner side of the hinge block is penetrated and hingedly connected with a hinge rod, the end of the hinge rod away from the hinge block is penetrated and hingedly connected with a round plate, the surface of the round plate is fixedly connected with an inserting rod, the inserting rod is penetrated through a fixed plate and is slidingly connected, a spring three is fixedly connected between the round plate and the fixed plate;

[0008] The inner side of the fixed plate is fixedly connected with a shaft rod, the shaft rod is penetrated and rotationally connected with a rotating rod;

[0009] The end of the rotating rod is penetrated and hingedly connected with a limiting block, the other end of the rotating rod is penetrated and hingedly connected with an L-shaped rod, the surface of the moving ring is fixedly connected with a fixed block;

[0010] The L-shaped rod is penetrated through the fixed block, and the L-shaped rod and the fixed block are slidingly connected, a spring four is fixedly connected between the inner side of the L-shaped rod and the surface of the fixed block;

[0011] The positioning part comprises a positioning disc, the positioning disc is fixedly connected with the inner wall of the machine body, the bottom surface of the positioning disc is provided with a movable groove, the inner side of the positioning disc is fixedly connected with a fixed disc, the surface of the fixed disc is provided with a recess, the inner side of the recess is penetrated and slidingly connected with a push rod, the surface of the push rod is penetrated and rotationally connected with a sliding rod, and the end of the push rod close to the center of the fixed disc is fixedly connected with a locking block;

[0012] The inner side of the positioning disc is rotationally connected with a rotating disc, the surface of the rotating disc is provided with an arc-shaped groove, the sliding rod is inserted into the inner side of the arc-shaped groove, the bottom surface of the rotating disc is fixedly connected with a pushing block, and the pushing block passes through the movable groove and is inserted into the guide groove;

[0013] The upper portion of the bracket is provided with a polishing mechanism, and the polishing mechanism comprises a fixed ring, a motor one, a gear one, a gear two, a mounting seat, a cylinder one, a connecting cover, a motor two and a connecting table.

[0014] Optionally, the fixed ring is fixedly installed above the bracket, the sidewall of the fixed ring is fixedly provided with the motor one, the output shaft end of the motor one is detachably provided with the gear one, the sidewall of the fixed ring is rotationally provided with the gear two, the gear one is engaged with the gear two, the bracket is fixedly provided with the mounting seat, the mounting seat is fixed with the gear two, the end of the mounting seat away from the gear two is fixedly provided with the cylinder one, and the output shaft end of the cylinder one is fixedly provided with the connecting table.

[0015] Optionally, the sidewall of the cylinder one is detachably provided with the connecting cover

[0016] The application further provides a machining process of the large-diameter alloy pipe machining equipment, which comprises the following steps:

[0017] S1, the large diameter alloy pipe is inserted into the inner side of the body, the spring two is compressed by pushing the arc block when inserting the pipe body, the spring two always pushes the push plate to make the support rod push the arc block to clamp the pipe body, and the middle end of the pipe body is arranged above the connecting table, and then the grinding piece is installed on the connecting table;

[0018] S2, start the cylinder one, so that the cylinder one pushes the mounting base to rise and make the grinding piece adhere to the surface of the pipe body, then start the cylinder two to push the moving seat to slide on the inner side of the body, when the moving seat is pushed by the cylinder two, the moving ring will move together, when the moving ring moves, the pipe body will move together through the arc block, when the moving ring moves a certain distance, the circular plate will abut against the surface of the positioning disc, the circular plate pushes the inserting rod to insert into the fixed plate, and the circular plate will push the hinged rod to rotate, so that the hinged rod pushes the push plate to move downward through the hinge block, when the push plate moves a certain distance, the push plate abuts against the limiting block and forces the limiting block to rotate a small distance, so that the limiting block is temporarily contracted, at the same time, the limiting block pulls the rotating rod to rotate and pulls the L-shaped rod to compress the spring four, when the bottom end of the push plate exceeds the bottom surface of the limiting block, the spring four pushes back the L-shaped rod to make the rotating rod rotate again and push back the limiting block to push the push plate, so that the push plate is limited by the limiting block, so that the push plate pulls the arc block through the support rod and no longer adheres to the pipe body, then start the cylinder two to reset, so that the arc block does not drive the pipe body to retreat, by repeatedly starting the cylinder two, the large diameter alloy pipe is driven to move in one direction when the moving ring follows the movement of the moving seat each time, and the distance of each movement is the same, which plays a role in conveying the pipe material at a certain distance.

[0019] S3, when the moving seat drives the moving ring to move, the guide groove in the inner side of the moving seat moves together with the moving seat, because the positioning disc is fixedly connected with the inner wall of the body, the guide groove abuts against the driving block to slide in the guide groove, so that the rotating disc rotates, the sliding rod drives the push rod to make the locking block clamp the pipe body;

[0020] Step four, start the motor two, and the grinding piece on the motor two grinds the pipe body.

[0021] Compared with the prior art, the large diameter alloy pipe machining equipment and machining process have the following beneficial effects:

[0022] 1、the large diameter alloy pipe machining equipment and machining process, when the bottom end of the push plate exceeds the bottom surface of the limiting block, the spring four pushes back the L-shaped rod to make the rotating rod rotate again and push back the limiting block to push the push plate, so that the push plate is limited by the limiting block, so that the push plate pulls the arc block through the support rod and no longer adheres to the pipe body, then start the cylinder two to reset, so that the arc block does not drive the pipe body to retreat, by repeatedly starting the cylinder two, the large diameter alloy pipe is driven to move in one direction when the moving ring follows the movement of the moving seat each time, and the distance of each movement is the same, which plays a role in conveying the pipe material at a certain distance.

[0023] 2. The large-diameter alloy pipe processing equipment and process, after the pipe body is conveyed at a fixed distance, the locking block can retract towards the middle of the positioning plate to fix the pipe body. In addition, the locking block in the symmetrical machine body can keep the two ends of the pipe body consistent. Under the fixation of the locking block, the stability of the pipe body during grinding is guaranteed and the axis will not shift.

[0024] 3. The large-diameter alloy pipe processing equipment and processing technology, with the mirrored setting of the linkage parts in the symmetrical machine body, can ensure that the linkage part in one side of the machine body is used for conveying and the linkage part in the other side of the machine body is used for pulling. In addition, temporary fixing during the conveying and pulling process will not cause the pipe body axis to shift, and at the same time, it can also ensure the stability of pipe conveying and processing. Attached Figure Description

[0025] Figure 1 This is a front view structural diagram of the present invention;

[0026] Figure 2 This is a schematic cross-sectional view of the bracket structure of the present invention;

[0027] Figure 3 This is a schematic diagram of the internal structure of the body of the present invention;

[0028] Figure 4 This is a schematic diagram of the linkage structure of the present invention;

[0029] Figure 5 This is a schematic diagram of the cross-sectional structure of the movable ring of the present invention;

[0030] Figure 6 This is a schematic diagram of the internal structure of the positioning disk of the present invention;

[0031] Figure 7 This is a schematic diagram of the expanded structure of the positioning disk of the present invention.

[0032] In the diagram: 1. Body; 2. Linkage unit; 21. Cylinder II; 22. Moving seat; 23. Positioning rod; 24. Spring I; 25. Guide groove; 26. Moving ring; 27. Fixed plate; 28. Support rod; 29. ​​Arc block; 210. Push plate; 211. Spring II; 212. Hinge block; 213. Hinge rod; 214. Circular plate; 215. Insert rod; 216. Spring III; 217. Shaft; 218. Rotating rod; 219. Limiting block; 220. L-shaped rod; 221. Fixed... 1. Fixed block; 222. Spring 4; 223. Elastic ring; 224. Arc spring; 3. Positioning part; 31. Positioning plate; 32. Movable groove; 33. Fixed plate; 34. Groove; 35. Push rod; 36. Slide rod; 37. Locking block; 38. Turntable; 39. Arc groove; 310. Actuating block; 4. Bracket; 5. Fixed ring; 6. Motor 1; 7. Gear 1; 8. Gear 2; 9. Mounting base; 10. Cylinder 1; 11. Connecting cover; 12. Motor 2; 13. Connecting platform. Detailed Implementation

[0033] like Figures 1-7 As shown, the present invention provides a technical solution: a large-diameter alloy pipe processing equipment, including a machine body 1, a bracket 4, a fixing ring 5, a motor 6, a gear 7, a gear 8, a mounting base 9, a cylinder 10, a connecting cover 11, a motor 12, and a connecting platform 13. The machine body 1 is internally provided with a linkage part 2 and a positioning part 3 for stable conveying of alloy pipes. The linkage part 2 includes:

[0034] Cylinder 21 is fixedly connected to the surface of the machine body 1. The output shaft of cylinder 21 passes through the machine body 1 and is slidably connected. A movable seat 22 is fixedly connected to the output shaft of cylinder 21. The movable seat 22 is located inside the machine body 1 and is slidably connected. A positioning rod 23 is fixedly connected to the inside of the machine body 1. The positioning rod 23 passes through the movable seat 22 and is slidably connected. A spring 24 is fixedly connected between the movable seat 22 and the bracket 4. A guide groove 25 is opened on the inside of the movable seat 22. A movable ring 26 is fixedly connected to the inside of the movable seat 22. When cylinder 10 is activated, it pushes the mounting seat 9 to rise so that the grinding disc is in contact with the surface of the tube. Then, cylinder 21 is activated to push the movable seat 22 to slide inside the machine body 1. When the movable seat 22 is pushed by cylinder 21, it will drive the movable ring 26 to move together. A fixing plate 27 is fixedly connected to the inside of the movable ring 26. A support rod 28 is slidably connected through the inner side of the fixed plate 27. An arc-shaped block 29 is fixedly connected to one end of the support rod 28 near the axis of the fixed plate 27. A push plate 210 is fixedly connected to the bottom end of the support rod 28. When the moving ring 26 moves, it will drive the tube body to move together through the arc-shaped block 29. After the moving ring 26 moves a certain distance, the circular plate 214 will abut against the surface of the positioning plate 31, causing the circular plate 214 to push the insertion rod 215 into the fixed plate 27. The circular plate 214 will also push the hinge rod 213 to rotate, thereby causing the hinge rod 213 to push the push plate 210 downward through the hinge block 212. The push plate 210 passes through the fixed plate 27 and is slidably connected. A spring 211 is fixedly connected between the push plate 210 and the inner wall of the fixed plate 27. A hinge block 212 is fixedly connected to the surface of the push plate 210. A hinge rod 213 is hinged through and hinged to the inner side of the hinge block 212. A circular plate 214 is hinged to the end of the hinge rod 213 away from the hinge block 212. An insert rod 215 is fixedly connected to the surface of the circular plate 214. The insert rod 215 passes through and is slidably connected to the fixed plate 27. A spring 216 is fixedly connected between the circular plate 214 and the fixed plate 27. A shaft 217 is fixedly connected to the inner side of the fixed plate 27. A rotating rod 218 is rotatably connected through and rotatably connected to the shaft 217. One end of the rotating rod 218 passes through and is hinged to a limiting block 219. After the push plate 210 moves downward a certain distance, it abuts against the limiting block 219 and forces the limiting block 219 to rotate a small distance, causing the limiting block 219 to contract briefly. At the same time, the limiting block 219 pulls the rotating rod 218 to rotate and pulls the L-shaped rod 220 to compress the spring 222. After the bottom end of the push plate 210 exceeds the bottom surface of the limiting block 219, the spring 222 pushes back the L-shaped rod 220, causing the rotating rod 218 to rotate again and push back the limiting block 219 to push the push plate 210, so that the push plate 210 is limited by the limiting block 219. The other end of the rotating rod 218 passes through and is hinged to an L-shaped rod 220. A fixing block 221 is fixedly connected to the surface of the moving ring 26.L-shaped rod 220 passes through fixed block 221 and is slidably connected to fixed block 221. Spring 222 is fixedly connected between the inner side of L-shaped rod 220 and the surface of fixed block 221. After push plate 210 moves downward a certain distance, it abuts against limiting block 219 and forces limiting block 219 to rotate a small distance, causing limiting block 219 to contract briefly. At the same time, limiting block 219 pulls rotating rod 218 to rotate and pulls L-shaped rod 220 to compress spring 222. There are three sets of arc-shaped blocks 29, and elastic rings 223 pass through the inner side of the three sets of arc-shaped blocks 29. Arc-shaped springs 224 are fixedly connected between every two sets of arc-shaped blocks 29.

[0035] The positioning unit 3 includes a positioning disk 31, which is fixedly connected to the inner wall of the body 1. The bottom surface of the positioning disk 31 has a movable groove 32. The inner side of the positioning disk 31 is fixedly connected to a fixed disk 33. The surface of the fixed disk 33 has a groove 34. The inner side of the groove 34 is slidably connected to a push rod 35. The surface of the push rod 35 is rotatably connected to a slide rod 36. The end of the push rod 35 near the center of the fixed disk 33 is fixedly connected to a locking block 37. When the cylinder 10 pushes the moving seat 22 to move the moving ring 26, the guide groove 25 on the inner side of the moving seat 22 will move along with the moving seat 22. Since the positioning disk 31 is fixedly connected to the inner wall of the body 1, the guide groove 25 will abut against the actuating block 310 when it moves, and slide in the guide groove 25, thereby actuating the turntable 38 to rotate. The slide rod 36 will drive the push rod 35 to lock the locking block 37 into the tube. A turntable 38 is rotatably connected to the inner side of the positioning disk 31. An arc-shaped groove 39 is opened on the surface of the turntable 38. A slide rod 36 is inserted into the inner side of the arc-shaped groove 39. A toggle block 310 is fixedly connected to the bottom surface of the turntable 38. The toggle block 310 passes through the movable groove 32 and is inserted into the guide groove 25.

[0036] A processing technology for a large-diameter alloy pipe processing equipment, the process including the following steps:

[0037] S1. Insert the large-diameter alloy tube into the inside of the machine body 1. When inserting the tube, push the arc block 29 to compress the spring 211, so that the spring 211 always pushes the push plate 210 to make the support rod 28 push the arc block 29 to clamp the tube. Then place the middle end of the tube above the connecting table 13, and then install the grinding disc on the connecting table.

[0038] S2. Start cylinder 10, causing it to push the mounting base 9 up so that the grinding disc fits against the surface of the tube. Then, start cylinder 21 to push the moving base 22 to slide inside the machine body 1. When the moving base 22 is pushed by cylinder 21, it will drive the moving ring 26 to move together. When the moving ring 26 moves, it will drive the tube to move together through the arc block 29. After the moving ring 26 moves a certain distance, the circular plate 214 will abut against the surface of the positioning plate 31, causing the circular plate 214 to push the insertion rod 215 into the fixed plate 27. The circular plate 214 will also push the hinge rod 213 to rotate, thereby causing the hinge rod 213 to push the push plate 210 downward through the hinge block 212. After the push plate 210 moves downward a certain distance, it will abut against the limit block 219 and force the limit block 219 to rotate. A short distance causes the limiting block 219 to briefly contract. At the same time, the limiting block 219 pulls the rotating rod 218 to rotate and pulls the L-shaped rod 220 to compress the spring 222. After the bottom end of the push plate 210 exceeds the bottom surface of the limiting block 219, the spring 222 pushes back the L-shaped rod 220, causing the rotating rod 218 to rotate again and push back the limiting block 219 to push the push plate 210. The push plate 210 is then limited by the limiting block 219, so that the push plate 210 pulls the arc-shaped block 29 through the support rod 28 and no longer adheres to the pipe body. Then, when the cylinder 21 is reset, the arc-shaped block 29 will not drive the pipe body to retract. By repeatedly starting the cylinder 21, the large-diameter alloy pipe is driven to move in one direction each time the moving ring 26 moves with the moving seat 22, and the distance moved each time is the same, achieving the effect of fixed-distance pipe delivery.

[0039] S3. When cylinder 21 pushes the moving seat 22 to move the moving ring 26, the guide groove 25 on the inner side of the moving seat 22 will move along with the moving seat 22. Since the positioning plate 31 is fixedly connected to the inner wall of the machine body 1, the guide groove 25 will abut against the actuating block 310 when it moves and slides in the guide groove 25, thereby actuating the turntable 38 to rotate. The slide rod 36 will drive the push rod 35 to lock the locking block 37 to clamp the tube body.

[0040] Step 4: Start motor 212 to polish the tube body with the grinding disc on motor 212.

[0041] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A large-diameter alloy pipe processing equipment, comprising a machine body (1) and a bracket (4), characterized in that: The machine body (1) is provided with a linkage part (2) and a positioning part (3) for stable conveying of alloy tubes. The linkage part (2) includes: cylinder two (21), cylinder two (21) is fixedly connected to the surface of the machine body (1), the output shaft of cylinder two (21) passes through the machine body (1) and is slidably connected, the output shaft of cylinder two (21) is fixedly connected to a moving seat (22), the moving seat (22) is located inside the machine body (1) and is slidably connected, the inner side of the machine body (1) is fixedly connected to a positioning rod (23), the positioning rod (23) passes through the moving seat (22) and is slidably connected, a spring one (24) is fixedly connected between the moving seat (22) and the bracket (4), a guide groove (25) is opened on the inner side of the moving seat (22), a moving ring (26) is fixedly connected to the inner side of the moving seat (22), and a fixing plate (27) is fixedly connected to the inner side of the moving ring (26). A support rod (28) is slidably connected through the inner side of the fixed plate (27). An arc-shaped block (29) is fixedly connected to one end of the support rod (28) near the axis of the fixed plate (27). A push plate (210) is fixedly connected to the bottom end of the support rod (28). The push plate (210) passes through the fixed plate (27) and is slidably connected. A spring (211) is fixedly connected between the push plate (210) and the inner wall of the fixed plate (27). A hinge block (212) is fixedly connected to the surface of the push plate (210). A hinge rod (213) is hinged through and hinged to the inner side of the hinge block (212). A circular plate (214) is hinged to the end of the hinge rod (213) away from the hinge block (212). A plug rod (215) is fixedly connected to the surface of the circular plate (214). The plug rod (215) passes through the fixed plate (27) and is slidably connected. A spring (216) is fixedly connected between the circular plate (214) and the fixed plate (27). A shaft (217) is fixedly connected to the inner side of the fixing plate (27), and a rotating rod (218) is rotatably connected through the shaft (217). One end of the rotating rod (218) passes through and is hinged to a limit block (219), and the other end of the rotating rod (218) passes through and is hinged to an L-shaped rod (220). A fixing block (221) is fixedly connected to the surface of the moving ring (26). The L-shaped rod (220) passes through the fixing block (221), and the L-shaped rod (220) is slidably connected to the fixing block (221). A spring (222) is fixedly connected between the inside of the L-shaped rod (220) and the surface of the fixing block (221). The positioning part (3) includes a positioning disk (31), which is fixedly connected to the inner wall of the body (1). The bottom surface of the positioning disk (31) is provided with a movable groove (32). A fixed disk (33) is fixedly connected to the inner side of the positioning disk (31). A groove (34) is provided on the surface of the fixed disk (33). A push rod (35) is slidably connected through the inner side of the groove (34). A slide rod (36) is rotatably connected through the surface of the push rod (35). A locking block (37) is fixedly connected to one end of the push rod (35) near the center of the fixed disk (33). The inner side of the positioning disk (31) is rotatably connected to a turntable (38). The surface of the turntable (38) is provided with an arc-shaped groove (39). The slide rod (36) is inserted into the inner side of the arc-shaped groove (39). The bottom surface of the turntable (38) is fixedly connected to a toggle block (310). The toggle block (310) passes through the movable groove (32) and is inserted into the guide groove (25). A grinding mechanism is provided above the bracket (4). The grinding mechanism includes: a fixing ring (5), a motor (6), a gear (7), a gear (8), a mounting base (9), a cylinder (10), a connecting cover (11), a motor (12), and a connecting platform (13).

2. The large-diameter alloy pipe processing equipment according to claim 1, characterized in that: The number of the arc-shaped blocks (29) is three sets, and the inner side of the three sets of arc-shaped blocks (29) is penetrated by an elastic ring (223), and an arc-shaped spring (224) is fixedly connected between each two sets of arc-shaped blocks (29).

3. The large-diameter alloy pipe processing equipment according to claim 2, characterized in that: The fixing ring (5) is fixedly installed above the bracket (4). A motor (6) is fixed on the side wall of the fixing ring (5). A gear (7) is detachably installed at the end of the output shaft of the motor (6). A gear (8) is rotatably installed on the side wall of the fixing ring (5), and the gear (7) meshes with the gear (8). A mounting seat (9) is fixedly installed on the bracket (4). The mounting seat (9) is fixed to the gear (8). A cylinder (10) is fixedly installed on the end plane of the mounting seat (9) away from the gear (8). A connecting platform (13) is fixedly installed at the end of the output shaft of the cylinder (10).

4. The large-diameter alloy pipe processing equipment according to claim 3, characterized in that: A connecting cover (11) is detachably installed on the side wall of cylinder one (10).

5. A processing technology for a large-diameter alloy pipe processing equipment, characterized in that: The processing technology of the processing equipment as described in any one of claims 1-4 includes the following steps: S1. Insert the large-diameter alloy tube into the inside of the machine body (1). When inserting the tube, push the arc block (29) to compress the spring two (211), so that the spring two (211) always pushes the push plate (210) to make the support rod (28) push the arc block (29) to clamp the tube body. Then place the middle end of the tube body above the connecting table (13), and then install the grinding disc on the connecting table (13). S2. Start cylinder one (10) so that cylinder one (10) pushes the mounting seat (9) up so that the grinding disc is in contact with the surface of the tube. Then start cylinder two (21) so that the moving seat (22) slides inside the machine body (1). When the moving seat (22) is pushed by cylinder two (21), it will drive the moving ring (26) to move together. When the moving ring (26) moves, it will drive the tube to move together through the arc block (29). When the moving ring (26) moves a certain distance, it will cause the round plate (214) to abut against the surface of the positioning plate (31), so that the round plate (214) pushes the insertion rod (215) to insert into the fixed plate (27). When cylinder two (21) is started again to reset, the arc block (29) will not drive the tube to retract. S3. When cylinder 2 (21) pushes the moving seat (22) to drive the moving ring (26) to move, the guide groove (25) on the inner side of the moving seat (22) will move along with the moving seat (22). Since the positioning plate (31) is fixedly connected to the inner wall of the machine body (1), the guide groove (25) will abut against the actuating block (310) when it moves and slide in the guide groove (25), thereby actuating the turntable (38) to rotate. The slide rod (36) will drive the push rod (35) to make the locking block (37) clamp the tube body. Step 4: Start motor 2 (12) to polish the tube body with the grinding disc on motor 2 (12).

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