Intelligent inner face grinding device for large-diameter high-strength corrosion-resistant stainless steel seamless steel pipe

Abstract

The invention relates to the technical field of seamless steel tube machining, in particular to an intelligent inner face grinding device for a large-diameter high-strength corrosion-resistant stainless steel seamless steel tube, which comprises a grinding table, a fixed table fixed on one side of the top end of the grinding table and a supporting seat fixed on the other side of the top end of the grinding table, in the process that the rotating shaft and the connecting shaft drive the rotating frame and the grinding ball to rotationally grind the inner wall of the seamless pipe, the pull rod can intermittently pull the rotating frame to rotate, so that the overall inclination angle of the rotating frame is adjusted, and then the distance between the grinding ball and the connecting shaft is changed; the dynamic adjusting mechanism can ensure that the grinding ball is always tightly attached to the curved surface contour of the inner wall of the pipeline during rotating operation and accurately adapts to curvature change of an inner spherical surface structure, so that grinding operation on a complex inner spherical surface is efficiently completed, the overall grinding quality and precision are remarkably improved, the limitation of a traditional rigid feeding structure is solved, and the machining efficiency is improved. The adaptability and the intelligent level of intelligent manufacturing equipment in the grinding field are improved, and the inner face machining requirement of a complex structural part is better met.

Description

Technical Field

[0001] The present invention relates to the technical field of seamless steel pipe processing, in particular to an intelligent inner surface grinding device for large-diameter, high-strength, corrosion-resistant stainless steel seamless pipes. Background Art

[0002] Amid the rapid development of the intelligent manufacturing equipment industry, large-diameter, high-strength, corrosion-resistant stainless steel seamless pipes are core components in high-end industries like chemical and nuclear power. The precision of their inner surface machining directly impacts system safety and lifespan. Traditional internal surface grinding relies on manual or semi-automatic equipment, resulting in low efficiency, unstable accuracy, and high safety risks. The emergence of intelligent internal surface grinding devices has become a key technology to overcome these bottlenecks.

[0003] Existing intelligent grinding devices achieve efficient processing through automated transmission and precise operation. Their workflow is clear: A screw drive mechanism or slide mechanism, coupled with a servo motor and precision control system, drives the grinder to smoothly feed along the pipe's axial direction, ensuring coverage of the entire length. Once inside the pipe, the grinder's high-speed rotary drive system drives the grinding head, achieving uniform grinding and polishing of the inner wall, removing burrs and improving the finish.

[0004] However, existing equipment still has significant technical limitations when dealing with complex inner wall shapes. Some large-diameter, high-strength, corrosion-resistant stainless steel seamless pipes for special applications (such as confluence sections in petrochemical oil pipelines and spherical transition sections in nuclear power steam pipelines) employ an internal spherical structure with small diameters at both ends and a large diameter in the middle. The inner wall is spherical, with a smooth curve transition between the ends and the straight pipe section. Due to this unique structural form, the rigid feed mechanism used in conventional equipment struggles to flexibly adapt to the continuously changing spherical profile during pipe wall grinding. This results in poor overall grinding results for these pipes, making it difficult to meet process requirements. Summary of the Invention

[0005] The purpose of the present invention is to provide an intelligent inner surface grinding device for large-diameter, high-strength, corrosion-resistant stainless steel seamless pipes to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an intelligent inner surface grinding device for large-diameter, high-strength, corrosion-resistant stainless steel seamless steel pipe, comprising a grinding table, a fixed table fixed on one side of the top of the grinding table, and a support seat fixed on the other side of the top, characterized in that: a stepper motor is fixedly installed on one side of the support seat, a rotating shaft is coaxially fixed on the output end of the stepper motor, a connecting shaft is coaxially fixed on one end of the rotating shaft away from the stepper motor, a rotating frame is obliquely arranged on the end of the connecting shaft away from the rotating shaft, a pulling adjustment component is arranged on the outside of the rotating shaft, a grinding ball is arranged on the top side of the rotating frame, and a switching coating component is arranged on the bottom side of the grinding ball; the pulling adjustment component comprises a rotating disk, a slip ring and a pull rod, the rotating disk is fixedly installed on the outside of one side of the rotating shaft close to the support seat, the slip ring is slidably installed on the outside of one side of the rotating shaft, and one end of the pull rod is laterally fixedly installed on the outside of one side edge of the slip ring.

[0007] Furthermore, a fixing frame is fixedly installed on the outside of the support seat near the bottom end of the rotating shaft, a plurality of teeth are fixedly installed at equal intervals on the outside of the rotating disk near the fixing frame, a gear rod is rotatably installed on the outside of the support seat near the plurality of teeth, a worm is rotatably installed on the inside of one side of the fixing frame, and one end of the worm is coaxially fixed to one end of the gear rod.

[0008] Furthermore, a rotating rod is installed through the fixed frame near the top end of the worm, a worm wheel is fixedly installed through the outside of the rotating rod, one side of the worm wheel is meshed with one side of the worm, and a connecting frame is fixedly installed through one side of the rotating rod.

[0009] Furthermore, a sliding groove is embedded around the outside of the slip ring, and an arc-shaped sliding seat is slidably engaged with one side of the sliding groove, and one end of the arc-shaped sliding seat is rotatably mounted on one end of the connecting frame.

[0010] Furthermore, a plurality of limit grooves are provided on the inner wall of the slip ring at equal angles, and a limit bar is fixedly installed on the outside of the rotating shaft near the plurality of limit grooves. The limit grooves and the limit bar are connected by a sliding engagement, and a retaining ring is fixedly installed on one end of the rotating shaft near the connecting shaft.

[0011] Furthermore, the rotating frame is set in a T shape, the connecting shaft protrudes from the outside near one side of the rotating frame and is fixedly installed with a limiting shaft, the protruding end of one side of the rotating frame passes through and is rotatably installed on the outside of the limiting shaft, and one end of the pull rod is rotatably installed on the outside of the side of the rotating frame away from the grinding ball.

[0012] Furthermore, the switching smearing assembly includes a limit frame, a fixed shaft and a storage box. The limit frame is fixedly installed on the outside of the rotating frame close to the grinding ball, the fixed shaft is rotated through and installed inside one side of the limit frame, and the storage box is fixedly installed on the inside of the limit frame close to the grinding ball. The storage box is arranged in an arc shape.

[0013] Furthermore, the middle position inside the grinding ball passes through and is fixedly installed on the outside of one side of the fixed shaft, the fixed shaft is arranged horizontally, and a driving motor is fixedly installed on the outside of one side of the limit frame, and the output end of the driving motor is coaxially fixed with one end of the fixed shaft, and a large gear plate is fixedly installed on the outside of the end of the fixed shaft away from the driving motor, and a small gear plate is rotatably installed on the outside of the side of the limit frame close to the large gear plate, and the large gear plate is meshed with the small gear plate, and a circular disc is fixedly installed on the outside of one side of the small gear plate, and a positioning column is fixedly installed on the outer edge of one side of the circular disc.

[0014] Furthermore, a reciprocating frame is provided on the outside of the positioning column, and the reciprocating frame is T-shaped, and a guide groove is provided inside the side of the reciprocating frame close to the positioning column, and the guide groove is slidably connected to the positioning column. An auxiliary frame is fixedly installed on the side of the rotating frame close to the reciprocating frame, and a protruding end of one side of the reciprocating frame is slidably installed on the outside of one side of the auxiliary frame. A piston block is fixedly installed on the outside of the end of the reciprocating frame away from the positioning column, and a liquid collecting cylinder is fixedly installed on the outside of the auxiliary frame close to the piston block, and the piston block is slidingly sealed and installed on the inside of one side of the liquid collecting cylinder.

[0015] Furthermore, a one-way liquid inlet valve tube and a one-way liquid discharge valve tube are fixedly installed through one end of the liquid collecting cylinder away from the reciprocating frame, a liquid storage tank is fixedly installed inside one side of the rotating frame, the input end of the one-way liquid inlet valve tube is fixedly installed through one side of the bottom end of the liquid storage tank, the output end of the one-way liquid discharge valve tube is fixedly installed through one side of the storage box, and a wiping cotton is fixedly installed through one side of the storage box close to the grinding ball, and one side of the wiping cotton is in contact with the outer surface of one side of the grinding ball.

[0016] Compared with the prior art, the present invention has the following beneficial effects: Through the coordinated design of the rotating frame and the pulling adjustment component, the rotating shaft and the connecting shaft drive the rotating frame and the grinding ball to rotate and grind the inner wall of the seamless pipe. The pull rod can intermittently pull the rotating frame to rotate, thereby adjusting its overall tilt angle, and then changing the distance between the grinding ball and the connecting shaft. This dynamic adjustment mechanism can ensure that the grinding ball always closely fits the curved surface contour of the inner wall of the pipe during the rotation operation, accurately adapts to the curvature change of the inner spherical structure, and thus efficiently completes the grinding operation of the complex inner spherical surface, significantly improving the overall grinding quality and accuracy, solving the limitations of the traditional rigid feed structure, promoting the adaptability and intelligence level of intelligent manufacturing equipment in the field of grinding, and better meeting the manufacturing field’s demand for internal surface processing of complex structural parts; At the same time, during the grinding process, the grinding ball can be driven by the driving motor to rotate and switch, which can effectively avoid the problem of a single surface of the grinding ball continuously fitting and grinding with the inner wall of the pipe, and can make the contact surfaces of the grinding ball evenly stressed, reduce local excessive wear or deformation caused by long-term friction, and significantly extend the service life of the grinding ball. At the same time, during the rotation switching process, the switching coating component can be triggered to operate, so that the surface of the grinding ball can be coated with polishing agent during the rotation switching process, so that when the subsequent grinding ball is grinding the inner wall of the pipe, it can effectively optimize the surface roughness of the inner wall of the pipe, improve the overall grinding accuracy, and make the overall grinding effect better. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall cross-sectional three-dimensional structure of the present invention; Figure 3 for Figure 2 A in the middle is an enlarged structural diagram; Figure 4 It is a schematic diagram of the three-dimensional structure of the connecting shaft and the rotating frame of the present invention; Figure 5 for Figure 4 The enlarged structural diagram at B in the middle; Figure 6 This is a schematic diagram of the demonstration structure of the pull rod pulling the rotating frame to rotate according to the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the rotating frame and the liquid storage tank of the present invention; Figure 8 for Figure 7 The enlarged structural diagram at C in the middle; Figure 9 This is a schematic diagram of the top view of the installation structure of the fixed shaft and the grinding ball of the present invention; Figure 10 It is a partial cross-sectional three-dimensional structural schematic diagram of the storage box and the one-way liquid discharge valve tube of the present invention; Figure 11This is a schematic diagram demonstrating the rotating shaft driving the grinding ball to rotate and grind.

[0018] In the accompanying drawings, the parts represented by each reference numeral are as follows: 1. Grinding table; 2. Fixed table; 3. Support seat; 4. Stepper motor; 5. Rotating shaft; 6. Connecting shaft; 7. Rotating disk; 8. Teeth; 9. Fixed frame; 10. Gear rod; 11. Worm; 12. Rotating rod; 13. Worm gear; 14. Connecting frame; 15. Limiting shaft; 16. Rotating frame; 17. Slip ring; 18. Slide groove; 19. Limiting strip; 20. Retaining ring; 21. Limiting groove ; 22. Arc-shaped slide; 23. Pull rod; 24. Limit frame; 25. Fixed shaft; 26. Grinding ball; 27. Driving motor; 28. Large gear plate; 29. ​​Small gear plate; 30. Disc; 31. Positioning column; 32. Reciprocating frame; 33. Auxiliary frame; 34. Guide groove; 35. Liquid collecting cylinder; 36. Piston block; 37. Liquid storage tank; 38. One-way liquid inlet valve pipe; 39. Storage box; 40. One-way liquid discharge valve pipe; 41. Wiping cotton. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] Example 1: Please refer to Figure 1 - Figure 6 , an intelligent inner surface grinding device for large-diameter, high-strength, corrosion-resistant stainless steel seamless pipes, includes a grinding table 1, a fixed table 2 fixed on one side of the top of the grinding table 1, and a support seat 3 fixed on the other side of the top. A stepper motor 4 is fixedly installed on one side of the support seat 3, and a rotating shaft 5 is coaxially fixed to the output end of the stepper motor 4. A connecting shaft 6 is coaxially fixed to the end of the rotating shaft 5 away from the stepper motor 4, and a rotating frame 16 is tilted at the end of the connecting shaft 6 away from the rotating shaft 5. A pulling adjustment component is provided on the outside of the rotating shaft 5, a grinding ball 26 is provided on the top side of the rotating frame 16, and a switching coating component is provided on the bottom side of the grinding ball 26; the pulling adjustment component includes a rotating disk 7, a slip ring 17 and a pull rod 23, the rotating disk 7 is fixedly installed on the outside of one side of the rotating shaft 5 close to the support seat 3, the slip ring 17 is slidably installed on the outside of one side of the rotating shaft 5, and one end of the pull rod 23 is laterally fixedly installed on the outside of one side edge of the slip ring 17.

[0021] A fixing frame 9 is fixedly installed on the outside of the support base 3 near the bottom end of the rotating shaft 5, and a plurality of teeth 8 are fixedly installed at equal intervals on the outside of the rotating disk 7 near the fixing frame 9. A gear rod 10 is rotatably installed on the outside of the support base 3 near the plurality of teeth 8, and a worm 11 is rotatably installed inside one side of the fixing frame 9, and one end of the worm 11 is coaxially fixed to one end of the gear rod 10.

[0022] A rotating rod 12 is installed on the top of the fixed frame 9 near the worm 11, and a worm wheel 13 is fixedly installed on the outside of the rotating rod 12. One side of the worm wheel 13 is meshed and connected with one side of the worm 11, and a connecting frame 14 is fixedly installed on one side of the rotating rod 12.

[0023] A sliding groove 18 is embedded around the outside of the slip ring 17 , and an arcuate sliding seat 22 is slidably engaged with one side of the sliding groove 18 . One end of the arcuate sliding seat 22 is rotatably mounted to one end of the connecting frame 14 .

[0024] Several limit grooves 21 are arranged at equal angles around the inner wall of the slip ring 17. Limit bars 19 are fixedly installed on the outside of the rotating shaft 5 near the several limit grooves 21. The limit grooves 21 and the limit bars 19 are connected by sliding engagement. A retaining ring 20 is fixedly installed on the end of the rotating shaft 5 near the connecting shaft 6.

[0025] Specifically, by setting the limit bar 19 and the limit groove 21, the rotating shaft 5 can drive the slip ring 17 to rotate synchronously, and the slip ring 17 can also slide on the surface of the rotating shaft 5. At the same time, with the setting of the slide groove 18 and the arc slide 22, when the connecting frame 14 rotates to drive the arc slide 22 and the slip ring 17 to move on the surface of the rotating shaft 5, it will not hinder the normal rotation of the slip ring 17, thereby ensuring the overall operation stability and avoiding movement conflict.

[0026] The rotating frame 16 is set in a T shape, and the protruding outer part of the connecting shaft 6 close to the rotating frame 16 passes through the limit shaft 15 for fixed installation. The protruding end of one side of the rotating frame 16 passes through and is rotatably installed on the outside of the limit shaft 15, and one end of the pull rod 23 is rotatably installed on the outside of the side of the rotating frame 16 away from the grinding ball 26.

[0027] In this embodiment, when the seamless pipe intelligent inner surface grinding device grinds the inner spherical pipe, the pipe to be ground is first hung on the top of the fixed platform 2 by a crane or other type of transport mechanism to ensure that the center of the pipe and the center of the rotating shaft 5 are on the same center line. Then, the fixed platform 2 and the pipe placed on the top are driven to one side of the rotating shaft 5 by the existing drive component, so that the limit shaft 15 is located in the middle position of the pipe to ensure that subsequent grinding can be accurate. Then, the stepper motor 4 is started and the rotating shaft 5 is driven by the rotation of the output shaft of the stepper motor 4. , the connecting shaft 6, the rotating frame 16 and the grinding ball 26 start to rotate, so that the grinding ball 26 can fit on one end of the spherical surface inside the pipe for rotational grinding. When the rotating shaft 5 drives the grinding ball 26 to rotate and grind one circle, it will drive the rotating disk 7 and the teeth 8 to rotate one circle synchronously, so that when the rotating disk 7 and the teeth 8 rotate the second circle, the teeth 8 will mesh with the gear rod 10 on one side, thereby driving the gear rod 10 to rotate a certain angle. After the gear rod 10 rotates a certain angle, it will drive the worm 11 fixed on the same axis on one side to rotate a certain angle synchronously, so that the worm 11 drives the top The meshing worm gear 13 rotates a certain angle, and the worm gear 13 drives the rotating rod 12 and the connecting frame 14 to rotate a certain angle. After the connecting frame 14 rotates a certain angle, it drives the slip ring 17 that is slidably installed on the outside of the rotating shaft 5 to move horizontally a certain distance. After the slip ring 17 moves a certain distance, it pulls the pull rod 23 on one side to move a certain distance, so that the pull rod 23 pulls the T-shaped rotating frame 16 to rotate a certain angle, thereby changing the distance between the grinding ball 26 at the top of the rotating frame 16 and the rotating shaft 5, so that the grinding ball 26 contacts another position of the spherical surface inside the pipe. Grinding, as the above-mentioned work process is continuously cycled, the grinding ball 26 can automatically realize dynamic diameter adjustment. Through this dynamic adjustment mechanism, it can be ensured that the grinding ball 26 always closely fits the curved surface contour of the inner wall of the pipe during the rotation operation, and accurately adapts to the curvature change of the inner spherical surface structure, thereby efficiently completing the grinding operation of the complex inner spherical surface, significantly improving the overall grinding quality and accuracy, solving the limitations of the traditional rigid feed structure, and promoting the adaptability and intelligence level of intelligent manufacturing equipment in the field of grinding, and better meeting the manufacturing field's needs for internal surface processing of complex structural parts.

[0028] Example 2: Please refer to Figure 7 - Figure 11 This embodiment further explains Example 1. The switching smearing component includes a limit frame 24, a fixed shaft 25 and a storage box 39. The limit frame 24 is fixedly installed on the outside of the rotating frame 16 close to the grinding ball 26. The fixed shaft 25 is rotated through and installed inside one side of the limit frame 24. The storage box 39 is fixedly installed on the inside of the limit frame 24 close to the grinding ball 26. The storage box 39 is set in an arc shape.

[0029] The grinding ball 26 is fixedly installed on the outside of one side of the fixed shaft 25 through the middle position inside. The fixed shaft 25 is arranged horizontally. A driving motor 27 is fixedly installed on the outside of one side of the limiting frame 24. The output end of the driving motor 27 is coaxially fixed with one end of the fixed shaft 25. A large gear disk 28 is fixedly installed on the outside of the end of the fixed shaft 25 away from the driving motor 27. A small gear disk 29 is rotatably installed on the outside of the limiting frame 24 close to the large gear disk 28. The large gear disk 28 is meshed with the small gear disk 29. A circular disk 30 is fixedly installed on the outside of one side of the small gear disk 29, and a positioning column 31 is fixedly installed on the outer edge of one side of the circular disk 30.

[0030] Specifically, the fixed shaft 25 is arranged horizontally as follows Figure 11 As shown, the rotation of the polishing ball 26 can be effectively limited when the rotating shaft 5 drives the fixed shaft 25 and the polishing ball 26 to rotate and polish. When the polishing ball 26 contacts the inner wall of the pipe for polishing, this horizontal layout can avoid the self-rotation phenomenon caused by the reverse resistance force generated by the inner wall of the pipe on the polishing ball 26, ensuring that the polishing ball 26 always maintains effective resistance with the inner wall in a stable posture. This design can ensure that the contact pressure between the polishing ball 26 and the inner wall of the pipe is uniform and continuous, reducing the contact instability caused by the rotation of the polishing ball 26, thereby avoiding the situation of insufficient or excessive local polishing force. At the same time, the stable resistance state can ensure the consistency of the polishing trajectory, improve the polishing uniformity and surface quality of the inner wall of the pipe, and ultimately ensure the reliability and accuracy of the overall polishing effect.

[0031] A reciprocating frame 32 is provided on the outside of the positioning column 31. The reciprocating frame 32 is T-shaped. A guide groove 34 is provided inside the reciprocating frame 32 on the side close to the positioning column 31. The guide groove 34 is slidably connected to the positioning column 31. An auxiliary frame 33 is fixedly installed on the side of the rotating frame 16 close to the reciprocating frame 32. A protruding end of one side of the reciprocating frame 32 is slidably installed on the outside of one side of the auxiliary frame 33. A piston block 36 is fixedly installed on the outside of the end of the reciprocating frame 32 away from the positioning column 31. A liquid collecting cylinder 35 is fixedly installed on the outside of the auxiliary frame 33 on the side close to the piston block 36. The piston block 36 is slidably and sealedly installed on the inside of one side of the liquid collecting cylinder 35.

[0032] A one-way liquid inlet valve tube 38 and a one-way liquid discharge valve tube 40 are fixedly installed on the end of the liquid collecting cylinder 35 away from the reciprocating frame 32, and a liquid storage tank 37 is fixedly installed inside one side of the rotating frame 16. The input end of the one-way liquid inlet valve tube 38 is fixedly installed inside one side of the bottom end of the liquid storage tank 37, and the output end of the one-way liquid discharge valve tube 40 is fixedly installed inside one side of the storage box 39. A wiping cotton 41 is fixedly installed on the side of the storage box 39 close to the grinding ball 26, and one side of the wiping cotton 41 is in contact with the outer surface of one side of the grinding ball 26.

[0033] In this embodiment, when the inner spherical surface of the seamless pipe is being polished, the drive motor 27 can be controlled to start, and the fixed shaft 25 can be driven to rotate a certain angle by the output shaft of the drive motor 27, thereby driving the polishing ball 26 to rotate a certain angle, thereby realizing automatic switching of the polishing surface of the polishing ball 26. This can effectively avoid the problem of a single surface of the polishing ball 26 continuously fitting and polishing against the inner wall of the pipe, and can make the contact surfaces of the polishing ball 26 evenly stressed, thereby reducing local excessive wear or deformation caused by long-term friction, and significantly extending the service life of the polishing ball 26.

[0034] It should also be noted that when the output shaft of the driving motor 27 rotates and drives the fixed shaft 25 to rotate a certain angle, it will drive the large gear plate 28 at one end of the fixed shaft 25 to rotate a certain angle synchronously. Due to the ratio of the number of teeth of the large gear plate 28 and the small gear plate 29 at the bottom end, when the large gear plate 28 rotates a certain angle, it will drive the small gear plate 29 to rotate one circle, thereby driving its external disc 30 to rotate one circle, thereby driving the positioning column 31 at the outer edge of the disc 30 to rotate one circle. At the same time, the positioning column 31 is connected with the internal guide groove 34 of the reciprocating frame 32 through the sliding connection and the T-shaped setting of the reciprocating frame 32. As a result, after the positioning column 31 rotates one circle, it will drive the reciprocating frame 32 to reciprocate up and down once under the limiting guidance of the auxiliary frame 33. When the reciprocating frame 32 reciprocates up and down, it will drive the piston block 36 to reciprocate synchronously once inside the liquid collecting cylinder 35, cooperating with The existing one-way liquid inlet valve tube 38 only allows liquid to flow from the liquid storage tank 37 into the liquid collecting cylinder 35, and the one-way liquid discharge valve tube 40 only allows liquid to be discharged from the liquid collecting cylinder 35 into the storage box 39. The conduction setting allows the polishing agent pre-stored in the liquid storage tank 37 to be quantitatively sucked into the interior of the liquid collecting cylinder 35, and then the quantitative polishing agent drawn into the interior of the liquid collecting cylinder 35 is squeezed into the interior of the storage box 39, ensuring that there is always sufficient polishing agent in the storage box 39 for the wiping cotton 41 inside the top end thereof to absorb. Then the wiping cotton 41 can wipe and smear the absorbed polishing agent on the outer surface of the polishing ball 26, so that the polishing ball 26 can be smeared with polishing agent on the surface of the polishing ball 26 during the rotation and switching process, so that when the subsequent polishing ball 26 polishes the inner wall of the pipe, it can effectively optimize the surface roughness of the inner wall of the pipe, improve the overall polishing accuracy, and make the overall polishing effect better.

[0035] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0036] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent inner surface grinding device for large-caliber, high-strength, corrosion-resistant stainless steel seamless pipes, comprising a grinding table (1), a fixing table (2) fixed to one side of the top of the grinding table (1), and a support seat (3) fixed to the other side of the top, characterized in that: A stepper motor (4) is fixedly mounted on one side of the support seat (3), a rotating shaft (5) is coaxially fixed to the output end of the stepper motor (4), a connecting shaft (6) is coaxially fixed to the end of the rotating shaft (5) away from the stepper motor (4), a rotating frame (16) is tiltedly provided at the end of the connecting shaft (6) away from the rotating shaft (5), a pulling adjustment component is provided on the outside of the rotating shaft (5), a grinding ball (26) is provided on the top side of the rotating frame (16), and a switching smearing component is provided on the bottom side of the grinding ball (26); The pulling adjustment assembly comprises a rotating disk (7), a slip ring (17) and a pull rod (23), wherein the rotating disk (7) is fixedly mounted on the outside of one side of the rotating shaft (5) close to the support seat (3), the slip ring (17) is slidably mounted on the outside of one side of the rotating shaft (5), and one end of the pull rod (23) is laterally fixedly mounted on the outside of one side edge of the slip ring (17).

2. The intelligent inner surface grinding device for large-diameter, high-strength, corrosion-resistant stainless steel seamless pipe according to claim 1 is characterized in that: A fixing frame (9) is fixedly mounted on the outside of the support seat (3) near the bottom end of the rotating shaft (5); a plurality of teeth (8) are fixedly mounted at equal intervals on the outside of the rotating disk (7) near the fixing frame (9); a gear rod (10) is rotatably mounted on the outside of the support seat (3) near the plurality of teeth (8); a worm (11) is rotatably mounted on the inside of one side of the fixing frame (9); one end of the worm (11) is coaxially fixed to one end of the gear rod (10).

3. The intelligent inner surface grinding device for large-diameter, high-strength, corrosion-resistant stainless steel seamless pipe according to claim 2 is characterized by: A rotating rod (12) is rotatably installed on the top end of the fixed frame (9) near the worm (11), a worm wheel (13) is fixedly installed on the outside of the rotating rod (12), one side of the worm wheel (13) is meshedly connected with one side of the worm (11), and a connecting frame (14) is fixedly installed on one side of the rotating rod (12).

4. The intelligent inner surface grinding device for large-diameter, high-strength, corrosion-resistant stainless steel seamless pipe according to claim 3 is characterized by: A sliding groove (18) is embedded around the outside of the slip ring (17), and an arc-shaped sliding seat (22) is slidably engaged with one side of the sliding groove (18), and one end of the arc-shaped sliding seat (22) is rotatably mounted on one end of the connecting frame (14).

5. The intelligent inner surface grinding device for large-diameter, high-strength, corrosion-resistant stainless steel seamless pipe according to claim 4 is characterized in that: A plurality of limiting grooves (21) are provided on the inner wall of the slip ring (17) at equal angles, and limiting strips (19) are fixedly installed on the outside of the plurality of limiting grooves (21) of the rotating shaft (5). The limiting grooves (21) and the limiting strips (19) are connected in a sliding engagement manner, and a retaining ring (20) is fixedly installed on one end of the rotating shaft (5) close to the connecting shaft (6).

6. The intelligent inner surface grinding device for large-diameter, high-strength, corrosion-resistant stainless steel seamless pipe according to claim 1 is characterized by: The rotating frame (16) is set in a T shape, the outer portion of the connecting shaft (6) protruding near the rotating frame (16) passes through the limit shaft (15) for fixed installation, the protruding end of one side of the rotating frame (16) passes through and is rotatably installed on the outside of the limit shaft (15), and one end of the pull rod (23) is rotatably installed on the outer portion of the rotating frame (16) away from the grinding ball (26).

7. The intelligent inner surface grinding device for large-diameter, high-strength, corrosion-resistant stainless steel seamless pipe according to claim 1 is characterized by: The switching smearing assembly comprises a limit frame (24), a fixed shaft (25) and a storage box (39), wherein the limit frame (24) is fixedly mounted on the outside of a side of the rotating frame (16) close to the grinding ball (26), the fixed shaft (25) is rotatably mounted on the inside of a side of the limit frame (24), and the storage box (39) is fixedly mounted on the inside of a side of the limit frame (24) close to the grinding ball (26), and the storage box (39) is arranged in an arc shape.

8. The intelligent inner surface grinding device for large-diameter, high-strength, corrosion-resistant stainless steel seamless pipe according to claim 7 is characterized in that: The grinding ball (26) is fixedly mounted on the outside of one side of the fixed shaft (25) at the middle position inside the grinding ball (26). The fixed shaft (25) is arranged horizontally. A driving motor (27) is fixedly mounted on the outside of one side of the limiting frame (24). The output end of the driving motor (27) is coaxially fixed with one end of the fixed shaft (25). A large gear disk (28) is fixedly mounted on the outside of the end of the fixed shaft (25) away from the driving motor (27). A small gear disk (29) is rotatably mounted on the outside of the side of the limiting frame (24) close to the large gear disk (28). The large gear disk (28) is meshed with the small gear disk (29). A circular disk (30) is fixedly mounted on the outside of one side of the small gear disk (29). A positioning column (31) is fixedly mounted on the outer edge of one side of the circular disk (30).

9. The intelligent inner surface grinding device for large-diameter, high-strength, corrosion-resistant stainless steel seamless pipe according to claim 8 is characterized by: A reciprocating frame (32) is provided on the outside of the positioning column (31), and the reciprocating frame (32) is T-shaped. A guide groove (34) is provided on the inside of the reciprocating frame (32) close to the positioning column (31). The guide groove (34) is connected to the positioning column (31) in a sliding manner. An auxiliary frame (33) is fixedly installed on the side of the rotating frame (16) close to the reciprocating frame (32). A protruding end of one side of the reciprocating frame (32) is slidably installed on the outside of one side of the auxiliary frame (33). A piston block (36) is fixedly installed on the outside of one end of the reciprocating frame (32) away from the positioning column (31). A liquid collecting cylinder (35) is fixedly installed on the outside of the auxiliary frame (33) close to the piston block (36). The piston block (36) is slidingly sealed and installed on the inside of one side of the liquid collecting cylinder (35).

10. The intelligent inner surface grinding device for large-diameter, high-strength, corrosion-resistant stainless steel seamless pipe according to claim 9, characterized in that: A one-way liquid inlet valve tube (38) and a one-way liquid discharge valve tube (40) are fixedly installed through one end of the liquid collecting cylinder (35) away from the reciprocating frame (32), a liquid storage tank (37) is fixedly installed inside one side of the rotating frame (16), an input end of the one-way liquid inlet valve tube (38) is fixedly installed inside one side of the bottom end of the liquid storage tank (37), an output end of the one-way liquid discharge valve tube (40) is fixedly installed inside one side of a storage box (39), a wiping cotton (41) is fixedly installed through one side of the storage box (39) close to the grinding ball (26), and one side of the wiping cotton (41) is in contact with the outer surface of one side of the grinding ball (26).

Images