Non-magnetic tube inner wall polishing equipment

Abstract

The utility model relates to the technical field of machining, and specifically discloses a non-magnetic pipe inner wall polishing equipment, which comprises: a polishing machine; further comprising: a rotating part, which is arranged at one end of the rotating shaft of the polishing machine; a centrifugal rod, which is slidably connected to the inside of the rotating part; a polishing plate, which is fixedly connected to the surface of the centrifugal rod; and a spring telescopic rod, which is fixedly connected to the inside of the rotating part and arranged at one side of the centrifugal rod. The utility model is designed in cooperation with the centrifugal rod and the spring telescopic rod, so that the polishing plate can be adaptively attached to different pipe diameters. When the rotating part rotates, the centrifugal rod slides along the radial direction under the action of centrifugal force, drives the polishing plate to outwardly expand and attach to the inner wall of the pipe, and the larger the pipe diameter is, the greater the expansion range driven by the centrifugal force is. When the pipe diameter is smaller, the reverse tension of the spring telescopic rod pulls the centrifugal rod to contract, and drives the polishing plate to synchronously reset. This design can adapt to non-magnetic pipes with a diameter difference of more than 50mm without replacing any polishing components.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, specifically to a non-magnetic pipe inner wall polishing device. Background Technology

[0002] In modern industrial production, non-magnetic tubing is widely used in many high-end fields such as electronics, aerospace, and medical. These fields place extremely stringent requirements on the quality of the inner wall of non-magnetic tubing, requiring extremely low inner wall roughness to ensure the stability of fluid transport inside the tubing, reduce resistance, or meet special needs such as high-precision electronic signal transmission.

[0003] Polishing methods often use polishing tools of fixed sizes, which are difficult to adapt to non-magnetic pipes of different diameters. When faced with changes in pipe diameter, polishing components need to be changed frequently, which is cumbersome and time-consuming, seriously affecting production efficiency. At the same time, since the contact pressure between the polishing tool and the inner wall of the pipe is difficult to control precisely, local over-polishing or under-polishing is likely to occur, resulting in inconsistent polishing quality of the inner wall of the pipe and a high scrap rate. To address this, we propose a non-magnetic pipe inner wall polishing device. Utility Model Content

[0004] The purpose of this invention is to provide a non-magnetic pipe inner wall polishing device to solve the problem mentioned in the background art of difficulty in adapting to non-magnetic pipes of different diameters.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a non-magnetic pipe inner wall polishing device, comprising: a polishing machine; It also includes: a rotating component, which is located at one end of the polishing machine's rotating shaft. A centrifugal rod is slidably connected inside the rotating component, and a polishing plate is fixedly connected to the surface of the centrifugal rod. A spring telescopic rod is fixedly connected inside the rotating component, and the spring telescopic rod is located on one side of the centrifugal rod. The rotation of the rotating component drives the polishing plate to polish the pipe through the centrifugal rod. The connecting plate is fixedly connected to one side inside the polishing machine. A fixed motor is set on one side of the connecting plate. A rotating plate is set at the output end of the fixed motor. A laser range sensor is fixedly connected inside the rotating plate. The fixed motor drives the laser range sensor to detect the inner diameter of the pipe through the rotating plate. The second electric push rod is located on one side of the connecting plate. A fixed air bladder is located on one side of the second electric push rod. A fixed tube is located at one end of the fixed air bladder. A piston rod is slidably connected inside the fixed tube. A sliding rheostat is fixedly connected to one end of the piston rod. The sliding rheostat changes the resistance value of the polishing machine shaft.

[0006] The centrifugal rod includes a limiting rod and a moving rod. The limiting rod is fixedly connected to the bottom of the moving rod, and the spring rod is fixedly connected to one side of the top of the limiting rod.

[0007] The output end of the fixed motor is fixedly connected to a universal joint, and one end of the universal joint is fixedly connected to a first electric push rod, which is fixedly connected to one side of the rotating plate.

[0008] The surface of the first electric push rod is rotatably connected to a support ring, which is fixedly connected to one side of the connecting plate.

[0009] One end of the connecting plate is fixedly connected to a placement box, and the fixed motor is fixedly connected inside the placement box.

[0010] One end of the fixed pipe is fixedly connected to a connecting pipe, and the connecting pipe is fixedly connected to one end of the fixed pipe.

[0011] The fixed tube is internally fixedly connected to a fixed spring, which is fixedly connected to one end of the piston rod.

[0012] This utility model has at least the following beneficial effects: This invention achieves adaptive fitting of the polishing plate to different pipe diameters through the coordinated design of the centrifugal rod and the spring telescopic rod: when the rotating part rotates, the centrifugal rod slides radially under the action of centrifugal force, causing the polishing plate to expand outward and fit the inner wall of the pipe. The larger the pipe diameter, the greater the expansion amplitude driven by centrifugal force; the smaller the pipe diameter, the reverse pull of the spring telescopic rod pulls the centrifugal rod to retract, causing the polishing plate to return to its original position. This design can adapt to non-magnetic pipes with diameter differences of more than 50mm without replacing any polishing components. This invention achieves precise matching of polishing pressure through a closed-loop control system of "detection-adjustment-feedback": Real-time inner diameter detection: The laser rangefinder rotates around the pipe axis with the rotating plate (5-10r / min low speed rotation ensures detection accuracy), which can obtain inner diameter data at different circumferential positions, calculate the actual inner diameter and roundness error of the pipe, provide accurate basis for pressure adjustment, and avoid pressure misjudgment caused by pipe diameter deviation; Intelligent pressure adjustment: Based on the inner diameter data, the control center drives the second electric push rod to adjust the pressure of the fixed airbag. The pressure is transmitted to the fixed pipe through the connecting pipe, which pushes the piston rod to drive the sliding rheostat to change the resistance value, thereby adjusting the polishing machine speed. When the pipe diameter is large, the speed increases, increasing the centrifugal force and increasing the contact pressure between the polishing plate and the inner wall. When the pipe diameter is small, the speed decreases, reducing the centrifugal force and the pressure decreases accordingly, forming a linear adjustment chain of "inner diameter-speed-centrifugal force-pressure". The pressure control accuracy can reach ±0.5N, ensuring that the contact pressure between the polishing plate and the inner wall is always within the optimal range for different pipe diameters (ensuring thorough burr removal while avoiding over-polishing and damage to the pipe). Attached Figure Description

[0013] Figure 1This is a three-dimensional installation position diagram of the present invention. Figure 2 This is a schematic diagram of the left-side cross-sectional structure of the rotating component of this utility model; Figure 3 This is a three-dimensional cross-sectional view of the placement box of this utility model; Figure 4 This is a schematic diagram of the structure at point A of this utility model.

[0014] In the diagram: 1. Polishing machine; 2. Rotating component; 3. Polishing plate; 4. Centrifugal rod; 41. Limiting rod; 42. Moving rod; 5. Spring telescopic rod; 6. Connecting plate; 7. Fixed motor; 8. Rotating plate; 9. Laser rangefinder sensor; 10. Second electric push rod; 11. Fixed airbag; 12. Fixed tube; 13. Piston rod; 14. Sliding rheostat; 15. Universal joint; 16. First electric push rod; 17. Support ring; 18. Placement box; 19. Connecting tube; 20. Fixed spring. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Example 1 Please see Figures 1 to 4 This utility model provides a technical solution: a non-magnetic pipe inner wall polishing device, comprising: a polishing machine 1; It also includes: a rotating component 2, which is set at one end of the rotating shaft of the polishing machine 1. A centrifugal rod 4 is slidably connected inside the rotating component 2. A polishing plate 3 is fixedly connected to the surface of the centrifugal rod 4. A spring telescopic rod 5 is fixedly connected inside the rotating component 2. The spring telescopic rod 5 is set on one side of the centrifugal rod 4. The rotating component 2 rotates and drives the polishing plate 3 to polish the pipe through the centrifugal rod 4. A connecting plate 6 is fixedly connected to one side inside the polishing machine 1. A fixed motor 7 is provided on one side of the connecting plate 6. A rotating plate 8 is provided at the output end of the fixed motor 7. A laser range sensor 9 is fixedly connected inside the rotating plate 8. The fixed motor 7 drives the laser range sensor 9 to detect the inner diameter of the pipe through the rotating plate 8. The second electric push rod 10 is located on one side of the connecting plate 6. A fixed airbag 11 is located on one side of the second electric push rod 10. A fixed tube 12 is located at one end of the fixed airbag 11. A piston rod 13 is slidably connected inside the fixed tube 12. A sliding rheostat 14 is fixedly connected at one end of the piston rod 13. The sliding rheostat 14 changes the resistance value of the rotating shaft of the polishing machine 1.

[0017] The output end of the polishing machine 1 is directly connected to the rotating part 2. By driving the rotating part 2 to rotate at high speed, it provides the basic power for the subsequent centrifugal rod 4 to drive the polishing plate 3 to adhere and polish. Its speed can be adjusted according to the pipe material and the inner wall roughness requirements to adapt to different polishing process requirements. The rotating component 2 has a columnar structure and is fixedly connected to one end of the rotating shaft of the polishing machine 1. It is the core of the power transmission and structural support of the polishing execution module. The rotating component 2 has four radially distributed sliding chambers (evenly arranged around the circumference) for the centrifugal rod 4 to slide. At the same time, springs 20 and telescopic rods 5 are fixed to the side walls of the chambers. Its main function is to transmit the rotational power of the polishing machine 1 to the centrifugal rod 4. By rotating itself, it drives the centrifugal rod 4 to rotate synchronously, thereby causing the polishing plate 3 to rotate around the pipe axis with the centrifugal rod 4. It also provides installation and movement space for the centrifugal rod 4 and the spring telescopic rod 5, ensuring stable cooperation of each component during rotation. The polishing plate 3 is made of a material with high wear resistance and high polishing precision (such as silicon carbide or diamond polishing pads) and is fixedly connected to the centrifugal rod. The surface of the centrifugal rod 4 (the side closest to the inner wall of the pipe) is evenly distributed along the circumference of the rotating part 2 along with the centrifugal rod 4. The polishing plate 3 is a component that directly contacts the inner wall of the non-magnetic pipe. The polishing layer on its surface achieves the polishing effect of removing burrs and reducing surface roughness of the inner wall of the pipe through high-speed friction with the inner wall of the pipe. Since the polishing plate 3 is fixed to the centrifugal rod 4, when the centrifugal rod 4 slides radially along the rotating part 2, the polishing plate 3 can move synchronously with the centrifugal rod 4 to achieve contact or separation with the inner wall of the pipe. When the polishing plate 3 rotates at high speed, its expansion position can change accordingly with the change of the inner diameter of the pipe. The centrifugal rod 4 is integrally formed by the limiting rod 41 and the moving rod 42, and is slidably connected to the sliding chamber inside the rotating part 2 along the radial direction. It is the connecting part of the centrifugal rod 2. 2 is the core transmission component of the polishing plate 3. One end of the moving rod 42 extends to the outside of the rotating part 2 and is fixedly connected to the polishing plate 3. The limiting rod 41 is located inside the rotating part 2 and has a diameter larger than the opening size of the sliding chamber. It is used to limit the sliding stroke of the centrifugal rod 4 and prevent it from coming out of the rotating part 2. The core function of the centrifugal rod 4 is to convert the centrifugal force generated by the rotation of the rotating part 2 into the radial movement force of the polishing plate 3. When the rotating part 2 rotates at high speed, the centrifugal rod 4 slides outward along the sliding chamber (closer to the inner wall of the pipe) under the action of centrifugal force, directly driving the polishing plate 3 on the surface to contact the inner wall of the pipe and generate a contact pressure. When the rotation speed of the rotating part 2 decreases, the centrifugal rod 4 slides inward under the pulling force of the spring telescopic rod 5, driving the polishing plate 3 to contact the pipe. The inner wall detaches, enabling start and stop control of the polishing action. The spring telescopic rod 5 is fixedly connected between the inner wall of the sliding chamber inside the rotating part 2 and the limiting rod 41 of the centrifugal rod 4 (arranged along the sliding direction of the centrifugal rod 4). It adopts a telescopic spring structure design and has an elastic reset function. Its main function is to provide reverse tension and buffer force for the centrifugal rod 4. When the rotating part 2 is not rotating (or the speed is low), the spring telescopic rod 5 is in a naturally contracted state. The tension pulls the centrifugal rod 4 to the initial position (close to the axis of the rotating part 2). At this time, the polishing plate 3 is in a contracted state with the centrifugal rod 4, which facilitates the overall insertion or withdrawal of the equipment from the pipe. When the rotating part 2 rotates and generates centrifugal force, the centrifugal rod 4 overcomes the tension of the spring telescopic rod 5 and slides outward. The spring telescopic rod 5 is stretched.Simultaneously, a reverse elastic force is generated, which balances the centrifugal force, maintaining a suitable contact pressure between the polishing plate 3 and the inner wall of the pipe. This avoids damage caused by excessive pressure from the polishing plate 3 on the inner wall of the pipe due to excessive centrifugal force, while ensuring sufficient contact pressure for effective polishing. When the polishing operation is completed and the rotation speed of the rotating part 2 decreases, the tension of the spring telescopic rod 5 can quickly drive the centrifugal rod 4 to reset, causing the polishing plate 3 to detach from the inner wall of the pipe, improving the ease of operation of the equipment. The connecting plate 6 is made of high-strength metal sheet and is fixedly connected to one side inside the polishing machine 1. It serves as the connecting bridge between the pipe inner diameter detection module and the main body of the polishing machine 1. One side of the connecting plate 6 is used to fix the placement box 18, the second electric push rod 10, and the support ring 17. Its structural strength must meet the installation stability requirements of each component of the detection module, and at the same time, it must ensure that there is no significant vibration during the operation of the polishing machine 1 to avoid affecting the detection accuracy. The fixed motor 7 is a servo motor and is fixedly connected inside the placement box 18. It is the rotational power source of the inner diameter detection module. Its core function is to drive the rotating plate 8 to rotate the laser rangefinder 9 around the pipe axis, so as to realize the inner diameter detection at different circumferential positions on the inner wall of the pipe. The speed of the fixed motor 7 can be precisely controlled. It is usually rotated at a low speed (such as 5-10 r / min) to ensure that the laser rangefinder 9 has enough detection time to obtain stable and accurate inner diameter data. The rotating plate 8 has a disc-shaped structure and is fixedly connected to one end of the first electric push rod 16. The surface is reserved with sensor mounting holes. Its main function is to install the laser rangefinder 9 and fix it in place. Driven by the fixed motor 7, the laser rangefinder 9 rotates around the pipe axis. The diameter of the rotating plate 8 must be smaller than the minimum inner diameter of different pipes to avoid collision with the inner wall of the pipe during rotation. At the same time, its plane must be perpendicular to the pipe axis to ensure that the detection direction of the laser rangefinder 9 is always perpendicular to the inner wall of the pipe, thus ensuring the accuracy of the detection data. The laser rangefinder 9 is fixedly connected inside the rotating plate 8, with the detection end facing the inner wall of the pipe. It adopts high-precision laser ranging technology (measurement accuracy can reach ±0.01mm). Its core function is to detect the distance between the rotating plate 8 and the inner wall of the pipe in real time and calculate the inner diameter of the pipe. When the rotating plate 8 drives the laser rangefinder 9 to rotate around the pipe axis for one revolution, the sensor can obtain the distance data of different circumferential positions on the inner wall of the pipe. Through data processing (such as taking the average value, maximum value, and minimum value), parameters such as the actual inner diameter and roundness error of the pipe can be obtained. These parameters will serve as the control basis for the polishing pressure adjustment module to ensure that the contact pressure between the polishing plate 3 (with the centrifugal rod 4) and the inner wall of the pipe is adapted to the inner diameter specification of the pipe. The second electric push rod 10 is fixedly connected to one side of the connecting plate 6, with its output end abutting against one side of the fixed airbag 11. It adopts a linear drive structure, and its core function is to provide initial pressure to the fixed airbag 11. When the equipment needs to polish pipes of different inner diameters, the second electric push rod 10 can compress or relax the fixed airbag 11 through telescopic movement, adjusting the air pressure inside the fixed airbag 11. This air pressure then drives the movement of the subsequent piston rod 13, providing initial power for polishing pressure adjustment. The fixed airbag 11 is made of an elastic sealing material (such as nitrile rubber), with one end abutting against the output end of the second electric push rod 10 and the other end connected to the fixed pipe 12 through the connecting pipe 19. It is filled with compressed air, and its main function is pressure transmission and buffering. The thrust of the second electric push rod 10 is converted into changes in internal air pressure through the fixed airbag 11. These pressure changes are transmitted to the inside of the fixed pipe 12 through the connecting pipe 19. Simultaneously, the elastic structure of the fixed airbag 11 absorbs vibrations during the polishing process, preventing impacts during pressure transmission and ensuring pressure regulation. For stability, the fixed tube 12 has a tubular structure and is fixedly connected to the fixed frame of the equipment (relative to the connecting plate 6). A fixed spring 20 is fixedly connected inside, and a piston rod 13 is slidably connected thereto. Its main function is to provide installation and movement space for the piston rod 13 and the fixed spring 20, while simultaneously restricting the movement direction of the piston rod 13 (sliding only axially) through the tubular structure. This ensures that the movement of the piston rod 13 can be stably converted into resistance adjustment by the sliding rheostat 14. The piston rod 13 is slidably connected inside the fixed tube 12. One end is connected to the fixed spring 20, and the other end extends to the outside of the fixed tube 12 and is fixedly connected to the slider of the sliding rheostat 14. Its core function is to convert the change in air pressure inside the fixed tube 12 into the mechanical displacement of the slider of the sliding rheostat 14. When the air pressure changes, the piston rod 13 slides along the axial direction of the fixed tube 12, causing the slider to move on the resistance wire of the sliding rheostat 14, changing the connected resistance value of the sliding rheostat 14. The sliding rheostat 14 is connected in series with the power circuit of the polishing machine 1, and the slider is fixedly connected to the piston rod 13.Its main function is to adjust the input current (or voltage) of the polishing machine 1 shaft by changing the connected resistance value, thereby changing the output speed and torque of the polishing machine 1. The speed of the polishing machine 1 directly affects the rotation speed of the rotating part 2, and ultimately determines the magnitude of the centrifugal force on the centrifugal rod 4. When the laser rangefinder 9 detects that the inner diameter of the pipe is large, the control center controls the second electric push rod 10 to increase the pressure on the fixed airbag 11. The air pressure inside the fixed tube 12 increases, the piston rod 13 drives the slide to move, and the resistance of the sliding rheostat 14 decreases. The current of the polishing machine 1 shaft increases, the speed increases, the rotation speed of the rotating part 2 increases, the centrifugal force on the centrifugal rod 4 increases, and the polishing plate 3 on the surface moves towards the inner wall of the pipe, increasing the contact pressure. Conversely, when the inner diameter of the pipe is small, the resistance of the sliding rheostat 14 increases, the speed of the polishing machine 1 decreases, the centrifugal force of the centrifugal rod 4 decreases, and the contact pressure of the polishing plate 3 decreases, thereby achieving adaptive adjustment of the polishing pressure and ensuring that the inner wall polishing effect of pipes with different inner diameters is consistent.

[0018] The centrifugal rod 4 includes a limiting rod 41 and a moving rod 42. The limiting rod 41 is fixedly connected to the bottom of the moving rod 42, and the spring rod is fixedly connected to one side of the top of the limiting rod 41.

[0019] A universal joint 15 is fixedly connected to the output end of the fixed motor 7. A first electric push rod 16 is fixedly connected to one end of the universal joint 15. The first electric push rod 16 is fixedly connected to one side of the rotating plate 8.

[0020] Universal joint 15 is fixedly connected between the output end of fixed motor 7 and one end of first electric push rod 16. Its main function is to compensate for possible coaxiality errors between the output shaft of fixed motor 7 and first electric push rod 16. At the same time, it allows first electric push rod 16 to drive rotating plate 8 to make fine angle adjustments during extension and retraction, ensuring that rotating plate 8 always remains coaxial with the pipe axis during rotation detection, avoiding data distortion caused by axis offset. First electric push rod 16 adopts a high-precision linear drive structure. One end is connected to the output end of fixed motor 7 through universal joint 15, and the other end is fixedly connected to one side of rotating plate 8. Its surface is rotatably connected to support ring 17. Its core function is to adjust the axial position of rotating plate 8 and laser rangefinder 9 to adapt to pipes of different lengths. When detecting pipes of different lengths, first electric push rod 16 can drive rotating plate 8 to move along the pipe axis through extension and retraction, so that laser rangefinder 9 can detect the inner diameter at different axial positions of the inner wall of the pipe, realizing a comprehensive evaluation of the consistency of the inner diameter of the pipe.

[0021] The surface of the first electric push rod 16 is rotatably connected to a support ring 17, which is fixedly connected to one side of the connecting plate 6.

[0022] The support ring 17 is fixedly connected to one side of the connecting plate 6. Its inner ring is rotatably connected to the surface of the first electric push rod 16. It adopts a sliding bearing structure design. Its main function is to provide radial support for the first electric push rod 16, so as to avoid radial wobbling of the first electric push rod 16 when it rotates with the rotating plate 8 under the drive of the fixed motor 7. This ensures that the extension and retraction of the first electric push rod 16 is stable and synchronized with the rotation of the rotating plate 8, and further improves the detection accuracy of the laser range sensor 9.

[0023] One end of the connecting plate 6 is fixedly connected to the placement box 18, and the fixed motor 7 is fixedly connected inside the placement box 18.

[0024] The placement box 18 has a box-shaped structure and is fixedly connected to one end of the connecting plate 6. The interior has reserved installation space, which is mainly used to fix and accommodate the fixed motor 7. At the same time, it plays a protective role for the fixed motor 7, preventing the debris and dust generated during the polishing process from entering the motor and affecting the motor's service life and operational stability.

[0025] One end of the fixed tube 12 is fixedly connected to a connecting tube 19, and the connecting tube 19 is fixedly connected to one end of the fixed tube 12.

[0026] The connecting pipe 19 is made of high-strength pressure-resistant tubing, with its two ends fixedly connected to one end of the fixed airbag 11 and one end of the fixed tube 12, respectively. The inside is a hollow channel, and its core function is to realize the air pressure connection between the fixed airbag 11 and the fixed tube 12, so as to ensure that the pressure change inside the fixed airbag 11 can be accurately and in real time transmitted to the inside of the fixed tube 12, providing a power source for the movement of the piston rod 13.

[0027] A fixing spring 20 is fixedly connected inside the fixing tube 12, and the fixing spring 20 is fixedly connected to one end of the piston rod 13.

[0028] The fixed spring 20 is fixedly connected between the bottom end of the fixed tube 12 and one end of the piston rod 13. It adopts a compression spring structure. Its main function is to provide a restoring force for the piston rod 13. When the air pressure inside the fixed tube 12 increases, the piston rod 13 overcomes the elastic force of the fixed spring 20 and moves towards the sliding rheostat 14. When the air pressure decreases, the elastic force of the fixed spring 20 pushes the piston rod 13 to reset, ensuring that the piston rod 13 can move stably in both directions with the change of air pressure, thereby realizing the dynamic adjustment of the resistance of the sliding rheostat 14.

[0029] The fit between the components: When the rotating part 2 rotates, it drives the internal centrifugal rod 4 to rotate synchronously. Under the action of centrifugal force, the centrifugal rod 4 slides radially along the rotating part 2, directly driving the polishing plate 3 on the surface to fit against the inner wall of the pipe. Meanwhile, the spring telescopic rod 5 balances the centrifugal force with the reverse elastic force, controlling the fitting pressure of the polishing plate 3. This direct fixed connection of "centrifugal rod 4-polishing plate 3" makes the movement of the polishing plate 3 more sensitive and the pressure adjustment more precise, avoiding the power transmission lag problem that may occur in the original "rotating part 2-polishing plate 3" connection method. The polishing pressure adaptive adjustment module changes the rotation speed of the polishing machine 1 through the sliding rheostat 14, thereby adjusting the rotation speed of the rotating part 2, and finally controlling the magnitude of the centrifugal force of the centrifugal rod 4. The higher the rotation speed, the greater the centrifugal force and the greater the contact pressure of the polishing plate 3, and vice versa. At the same time, the spring telescopic rod 5 provides basic buffer force for the polishing plate 3 to avoid polishing pressure fluctuations caused by sudden changes in centrifugal force. The two work together to form a precise control chain of "rotation speed-centrifugal force-pressure" to ensure that the polishing pressure is stably adapted to the inner diameter of the pipe. The laser rangefinder 9 of the pipe inner diameter detection module transmits the detected inner diameter data to the control center in real time. The control center calculates the appropriate polishing pressure and the corresponding speed of the polishing machine 1 based on the data, and then sends a control command to the second electric push rod 10 to adjust the pressure of the fixed airbag 11. The fixed tube 12 and piston rod 13 drive the sliding rheostat 14 to change the speed of the polishing machine 1, thereby controlling the centrifugal force of the centrifugal rod 4 and the contact pressure with the polishing plate 3, so as to achieve precise linkage of "detection data-pressure adjustment-polishing execution". The connecting plate 6 serves as the core support structure, simultaneously fixing the housing 18 (including the fixed motor 7), the second electric push rod 10, and the support ring 17. This ensures the relative position stability of the inner diameter detection module and the pressure adjustment module. The rotational connection between the support ring 17 and the first electric push rod 16 ensures the radial stability of the first electric push rod 16 when driving the rotating plate 8 to rotate, preventing vibration of the detection module from affecting the detection accuracy. The universal joint 15 compensates for the coaxiality error between the fixed motor 7 and the first electric push rod 16, ensuring that the rotating plate 8 remains aligned with the pipe axis when rotating, further improving detection accuracy.

[0030] Example 2 In this second embodiment, the other structures remain unchanged. The difference from the first embodiment is that a control center is fixedly connected inside the placement box 18 on the side near the second electric push rod 10.

[0031] The control center is fixedly connected inside the placement box 18, near the second electric push rod 10. It uses an embedded microprocessor (such as an STM32 series chip) as its core and is connected to the laser rangefinder 9, the second electric push rod 10, the sliding rheostat 14, and the electrical control system of the polishing machine 1 via data cables. Its core function is to realize the linkage of electrical control logic among various modules. On the one hand, it receives the pipe inner diameter detection data transmitted by the laser rangefinder 9, calculates the required polishing pressure through the built-in algorithm, and then determines the corresponding speed of the polishing machine 1. On the other hand, it outputs control signals based on the calculation results to drive the second electric push rod 10 to adjust the pressure of the fixed airbag 11. Through the fixed tube 12 and the piston rod 13, it drives the sliding rheostat 14 to change the speed of the polishing machine 1. Finally, it achieves precise control of the centrifugal force of the centrifugal rod 4 and the contact pressure of the polishing plate 3, forming a closed-loop control of "detection-calculation-adjustment-feedback". This greatly improves the automation level and polishing accuracy of the equipment and avoids errors caused by manual adjustment.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A non-magnetic pipe inner wall polishing device, comprising: Polishing machine; Its features include: a rotating component, which is disposed at one end of the polishing machine's rotating shaft, a centrifugal rod is slidably connected inside the rotating component, a polishing plate is fixedly connected to the surface of the centrifugal rod, a spring telescopic rod is fixedly connected inside the rotating component, and the spring telescopic rod is disposed on one side of the centrifugal rod. The rotation of the rotating component drives the polishing plate to polish the pipe through the centrifugal rod. A connecting plate is fixedly connected to one side inside the polishing machine. A fixed motor is provided on one side of the connecting plate. A rotating plate is provided at the output end of the fixed motor. A laser rangefinder is fixedly connected inside the rotating plate. The fixed motor drives the laser rangefinder to detect the inner diameter of the pipe through the rotating plate. The second electric push rod is located on one side of the connecting plate. A fixed air bladder is located on one side of the second electric push rod. A fixed tube is located at one end of the fixed air bladder. A piston rod is slidably connected inside the fixed tube. A sliding rheostat is fixedly connected to one end of the piston rod. The sliding rheostat changes the resistance value of the polishing machine shaft.

2. The non-magnetic pipe inner wall polishing equipment according to claim 1, characterized in that: The centrifugal rod includes a limiting rod and a moving rod. The limiting rod is fixedly connected to the bottom of the moving rod, and the spring telescopic rod is fixedly connected to one side of the top of the limiting rod.

3. The non-magnetic pipe inner wall polishing equipment according to claim 1, characterized in that: The output end of the fixed motor is fixedly connected to a universal joint, and one end of the universal joint is fixedly connected to a first electric push rod, which is fixedly connected to one side of the rotating plate.

4. The non-magnetic pipe inner wall polishing equipment according to claim 3, characterized in that: The surface of the first electric push rod is rotatably connected to a support ring, which is fixedly connected to one side of the connecting plate.

5. The non-magnetic pipe inner wall polishing equipment according to claim 1, characterized in that: One end of the connecting plate is fixedly connected to a placement box, and the fixed motor is fixedly connected inside the placement box.

6. The non-magnetic pipe inner wall polishing equipment according to claim 1, characterized in that: One end of the fixed tube is fixedly connected to a connecting tube, and the connecting tube is fixedly connected to one end of the fixed tube.

7. The non-magnetic pipe inner wall polishing equipment according to claim 1, characterized in that: A fixing spring is fixedly connected inside the fixing tube, and the fixing spring is fixedly connected to one end of the piston rod.

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