Intelligent machining system and method for outer circle of steel pipe

Abstract

The invention relates to the technical field of pipe fitting machining, in particular to an intelligent steel pipe outer circle machining system and method. According to the intelligent machining system and method for the outer circle of the steel pipe, technological parameters are dynamically adjusted through the feedback control system, closed-loop machining of detection, grinding and re-detection of the outer circle of the steel pipe can be achieved, and the machining target of one-time machining and comprehensive completion is achieved; the machining station is matched with a system to detect the surface defects of the steel pipe in real time, and a grinding scheme can be automatically formulated and executed according to the shape of the to-be-machined steel pipe. Machining process parameters of machining stations are dynamically adjusted through the feedback control system, automatic, intelligent and informationized grinding and polishing are achieved, the steel pipe outer circle surface machining quality, machining efficiency and product consistency can be improved, and the problems existing in an existing steel pipe outer circle machining technology are solved.

Description

Technical Field

[0001] This invention relates to the field of pipe fitting processing technology, and in particular to an intelligent processing system and method for the outer diameter of steel pipes. Background Technology

[0002] The outer diameter of steel pipes is generally processed by grinding. The grinding process directly affects the surface roughness, wall thickness uniformity and straightness of the steel pipe, which in turn affects the wear resistance, corrosion resistance, structural stability and load-bearing and sealing performance of the steel pipe.

[0003] Taking the grinding of the outer diameter of steel pipes as an example, most existing steel pipe grinding processes involve an electric motor driving a belt pulley to drive the grinding wheel, and controlling the grinding pressure through a pressure application structure to achieve the required grinding depth and surface finish. This process is not only inefficient, but the surface grinding quality of the steel pipe also relies on manual inspection, and the inspection results are easily affected by human factors, making it difficult to guarantee accuracy and consistency.

[0004] Therefore, in order to adapt to the needs of modern production and improve the processing quality, processing efficiency and product consistency of the outer surface of steel pipes, it is necessary to propose a new processing scheme for the outer surface of steel pipes. Summary of the Invention

[0005] The purpose of this invention is to provide an intelligent machining system and method for the outer diameter of steel pipes. By dynamically adjusting process parameters through a feedback control system, it can realize a closed-loop machining process of "inspection-grinding-re-inspection" for the outer diameter of steel pipes, thereby achieving automation, intelligence, and informatization in the machining of the outer diameter of steel pipes. This can improve the surface machining quality, machining efficiency, and product consistency of the outer diameter of steel pipes, thus solving the problems existing in the prior art.

[0006] To achieve the above objectives, the present invention provides the following solution: On one hand, the present invention provides an intelligent machining system for the outer diameter of steel pipes, comprising: The inspection station includes a steel pipe conveying unit and a steel pipe inspection unit. The steel pipe inspection unit includes inspection components, including a line laser sensor, a roughness sensor, and a wall thickness sensor. The steel pipe inspection unit is used to inspect the quality parameters of the steel pipe to be processed on the steel pipe conveying unit. The quality parameters include one or more combinations of steel pipe straightness, steel pipe surface roundness, steel pipe surface roughness, and steel pipe wall thickness. The machining station includes an outer diameter machining unit capable of machining the outer diameter of steel pipes; The first steel pipe transfer mechanism is capable of transferring steel pipes that fail the quality parameter test on the steel pipe conveying unit to the outer diameter processing unit for outer diameter processing. The second steel pipe transfer mechanism can transfer the steel pipe processed on the outer circle processing unit to the steel pipe conveying unit, so that the steel pipe processed on the outer circle processing unit can be tested again for the quality parameters by the steel pipe detection unit. The feedback control system is communicatively connected to the detection station, the processing station, the first steel pipe transfer mechanism, and the second steel pipe transfer mechanism. The feedback control system can dynamically adjust the number of processing and detection cycles for each steel pipe and the process parameters of the outer circle processing unit in each cycle based on the quality parameters measured by the steel pipe detection unit.

[0007] In some embodiments, the outer diameter machining unit is an outer diameter grinding unit. The feed end of the outer diameter grinding unit is connected to a first grinding conveyor belt, and the discharge end of the outer diameter grinding unit is connected to a second grinding conveyor belt. The outer diameter machining unit can perform outer diameter machining on the steel pipe conveyed by the first grinding conveyor belt, and the second grinding conveyor belt can receive the steel pipe that has been machined on the outer diameter machining unit and convey the steel pipe away from the outer diameter machining unit.

[0008] In some embodiments, the steel pipe conveying unit includes a weighing conveyor belt and a detection conveyor belt arranged sequentially along the steel pipe conveying direction. The weighing conveyor belt is equipped with a weighing sensor, which can weigh the steel pipes on the weighing conveyor belt. The steel pipe testing unit is located at the junction of the testing conveyor belt and the weighing conveyor belt, or is located on the testing conveyor belt. The steel pipe testing unit is used to test the quality parameters of the steel pipes fed into the testing conveyor belt. The first steel pipe transfer mechanism is located between the first grinding conveyor belt and the first inspection conveyor belt, and the second steel pipe transfer mechanism is located between the second grinding conveyor belt and the second weighing conveyor belt.

[0009] In some embodiments, the outer cylindrical grinding unit includes a rough grinding unit, a fine grinding unit, and a polishing unit arranged sequentially along the conveying direction of the steel pipe.

[0010] In some embodiments, the steel pipe inspection unit is disposed at the junction of the inspection conveyor belt and the weighing conveyor belt, and the steel pipe inspection unit includes: Support frame; The mounting frame is a circular frame or a regular polygonal frame, and the mounting frame is vertically and slidably mounted on the support frame. The detection assembly is mounted on the mounting frame. Multiple line laser sensors are evenly distributed along the circumference of the mounting frame. The line laser sensors can detect the straightness and surface roundness of the steel pipe. Multiple sensor drive cylinders are provided on the mounting frame. The inner ends of each sensor drive cylinder are located on a circle concentric with the mounting frame, and the sensor drive cylinders are evenly distributed along the circumference of the mounting frame. The inner end of any one sensor drive cylinder is simultaneously provided with a roughness sensor and a wall thickness sensor. The roughness sensor and the wall thickness sensor are used to detect the surface roughness and wall thickness of the steel pipe, respectively. Any one of the sensor drive cylinders is used to drive the corresponding roughness sensor and wall thickness sensor to move closer to or away from the surface of the steel pipe. A concentric adjustment drive, connected between the support frame and the mounting frame, is used to drive the mounting frame to rise and fall relative to the support frame, so that the mounting frame is concentric with the steel pipe fed into the detection conveyor belt.

[0011] In some embodiments, the grinding conveyor belt and the inspection conveyor belt are parallel and corresponding, and the steel pipe transfer mechanism includes: A linear slide rail is provided below the first grinding conveyor belt and the first inspection conveyor belt, and is perpendicular to the first grinding conveyor belt and the first inspection conveyor belt; multiple linear slide rails are provided parallel to each other at intervals along the conveying direction of the first grinding conveyor belt. A transport platform is arranged in a one-to-one correspondence with each linear slide rail. The transport platform includes a slide base, a steel pipe lifting block, and a lifting drive. The slide base slides in cooperation with the corresponding linear slide rail. The steel pipe lifting block is disposed on the top of the slide base and connected to the slide base through the lifting drive. Multiple intervals are provided on both the first grinding conveyor belt and the first inspection conveyor belt. Each interval on the first grinding conveyor belt and the first inspection conveyor belt corresponds to the transport platform. The intervals are used to allow the steel pipe lifting block to pass through during the lifting process, so as to realize the picking and placing of steel pipes on the first grinding conveyor belt and / or the first inspection conveyor belt. A linear drive, corresponding one-to-one with or connected to all of the transport platforms, is used to drive the transport platforms to move along the linear slide rails to realize the transfer of steel pipes between the grinding conveyor belt and the inspection conveyor belt.

[0012] In some embodiments, the intelligent processing system for the outer diameter of the steel pipe further includes a steel pipe unloading station, which is located on the side of the inspection conveyor belt away from the grinding conveyor belt; the steel pipe unloading station includes a plurality of unloading racks arranged parallel to each other along the conveying direction of the inspection conveyor belt, and there is an unloading rack partition between any adjacent unloading racks. Each of the linear slide rails corresponds to a material unloading rack partition, and the end of any linear slide rail away from the first grinding conveyor belt extends into the corresponding material unloading rack partition, so that the transport table can transfer the steel pipes that have passed the quality parameter test on the inspection conveyor belt to the steel pipe unloading station.

[0013] In some embodiments, the second grinding conveyor belt and the second weighing conveyor belt are parallel and corresponding, and the second steel pipe transfer mechanism includes: A linear slide rail is provided below the second grinding conveyor belt and the weighing conveyor belt, and is perpendicular to the second grinding conveyor belt and the weighing conveyor belt; multiple linear slide rails are provided parallel to each other at intervals along the conveying direction of the second grinding conveyor belt. A transport platform is arranged in a one-to-one correspondence with each of the linear slide rails. The transport platform includes a slide base, a steel pipe lifting block, and a lifting drive. The slide base slides in cooperation with the corresponding linear slide rail. The steel pipe lifting block is located on the top of the slide base and is connected to the slide base through the lifting drive. Multiple intervals are provided on both the second grinding conveyor belt and the weighing conveyor belt. Each interval on the second grinding conveyor belt and the weighing conveyor belt corresponds to the transport platform. The intervals are used to allow the steel pipe lifting block to pass through during the lifting process, so as to realize the picking and placing of steel pipes on the second grinding conveyor belt and / or the weighing conveyor belt. A linear drive, corresponding one-to-one with or connected to all of the transport platforms, is used to drive the transport platforms to move along the linear slide rails to realize the transfer of steel pipes between the grinding conveyor belt and the weighing conveyor belt.

[0014] In some embodiments, the intelligent processing system for the outer diameter of the steel pipe further includes a steel pipe loading station, which is located on the side of the weighing conveyor belt away from the grinding conveyor belt; the steel pipe loading station includes a plurality of loading racks arranged parallel to each other along the conveying direction of the weighing conveyor belt, and there is a loading rack partition between any adjacent loading racks. Each of the linear slide rails corresponds to a loading rack partition, and the end of any linear slide rail furthest from the second grinding conveyor belt extends into the corresponding loading rack partition, so that the transport table can transfer the steel pipes to be processed on the steel pipe loading station to the weighing conveyor belt; or, a steel pipe transfer mechanism three is also provided between the steel pipe loading station and the weighing conveyor belt, the structure of the steel pipe transfer mechanism three is the same as that of the steel pipe transfer mechanism two, and any one of the linear slide rails of the steel pipe transfer mechanism three is located below the weighing conveyor belt and extends into the corresponding loading rack partition.

[0015] In some embodiments, the intelligent machining system for the outer diameter of the steel pipe further includes: Limit switch one is installed on the second grinding conveyor belt and is located at the end of the second grinding conveyor belt near the discharge end of the outer circle grinding unit; Limit switch two is set on the grinding conveyor belt two and located at the end of the grinding conveyor belt two that is away from the discharge end of the outer circle grinding unit; Limit switch three is installed on the detection conveyor belt and located at the end of the detection conveyor belt.

[0016] On the other hand, the present invention proposes an intelligent machining method for the outer diameter of steel pipes, implemented based on the aforementioned intelligent machining system for the outer diameter of steel pipes, comprising: Step 1: Input the batch information of the steel pipes to be processed into the feedback control system, and simultaneously start the detection conveyor belt and the weighing conveyor belt; Step 2: Transfer the steel pipe to the weighing conveyor belt; while the steel pipe is being transported by the weighing conveyor belt, the weight of the steel pipe is measured. Step 3: During the process of the steel pipe being conveyed into the inspection conveyor belt, the quality parameters of the steel pipe are detected by the inspection component, and it is determined whether the measured quality parameters meet the target parameters. If the measured quality parameters are determined to be unqualified, the steel pipe is unqualified and step 4 is executed. If the measured quality parameters are determined to meet the target parameters, the steel pipe is qualified and step 5 is executed. Step 4: Adjust the process parameters of the outer diameter machining unit according to the measured quality parameters, and transfer the steel pipe on the inspection conveyor belt to the grinding conveyor belt through the steel pipe transfer mechanism one. The grinding conveyor belt one then transfers the steel pipe to the outer diameter machining unit for outer diameter machining. The grinding conveyor belt two then receives and transfers the machined steel pipe from the outer diameter machining unit, and steps 2 to 3 are executed to re-inspect the quality parameters of the steel pipe. Step 5: Transfer the qualified steel pipes from the inspection conveyor belt.

[0017] The present invention achieves the following technical effects compared to the prior art: The intelligent machining system and method for steel pipe outer diameter proposed in this invention achieves closed-loop machining of the steel pipe outer diameter through a feedback control system that dynamically adjusts process parameters, enabling a complete machining process in a single operation. The machining station employs multiple sets of belt grinding units (rough grinding, fine grinding, polishing, etc.) working in conjunction with adjustable grinding heads. Combined with real-time detection of steel pipe surface defects, the system can automatically formulate and execute grinding plans based on the shape of the steel pipe. The feedback control system dynamically adjusts the machining process parameters at the machining station, achieving automated, intelligent, and information-based grinding and polishing.

[0018] In some technical solutions of this invention, a grinding conveyor belt 1 is connected to the feeding end of the outer diameter grinding unit, and a grinding conveyor belt 2 is connected to the discharging end of the outer diameter grinding unit. The steel pipe conveying unit includes a weighing conveyor belt and an inspection conveyor belt arranged sequentially along the steel pipe conveying direction. The grinding conveyor belt 1 and the inspection conveyor belt are parallel and corresponding, and the steel pipe is transferred between the grinding conveyor belt 1 and the inspection conveyor belt through a steel pipe transfer mechanism 1. The grinding conveyor belt 2 and the weighing conveyor belt are parallel and corresponding, and the steel pipe is transferred between the grinding conveyor belt 2 and the weighing conveyor belt through a steel pipe transfer mechanism 2. Based on the arrangement and coordination of the conveyor belts of the above units, the steel pipe can operate automatically and smoothly during the intelligent outer diameter processing, so that the steel pipe can complete the inspection and grinding processing during the conveying process. This is crucial for realizing the closed-loop processing of the outer diameter of the steel pipe of "inspection-grinding-re-inspection", which improves the efficiency and accuracy of the intelligent outer diameter processing of the steel pipe and reduces the product defect rate. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the intelligent machining system for the outer diameter of steel pipes disclosed in an embodiment of the present invention; Figure 2 for Figure 1 Top view of the intelligent machining system for the outer diameter of steel pipes; Figure 3 This is a schematic diagram showing the arrangement of the steel pipe unloading station and the steel pipe transfer mechanism 1 as disclosed in an embodiment of the present invention; Figure 4 for Figure 3 A magnified view of a portion of the image; Figure 5 This is a schematic diagram of a transport platform in a lifted state as disclosed in an embodiment of the present invention; Figure 6 This is a schematic diagram of the transport platform in a landing state as disclosed in an embodiment of the present invention; Figure 7 This is a schematic diagram of the internal structure of a transport platform disclosed in an embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of the outer diameter machining unit disclosed in an embodiment of the present invention; Figure 9 This is an enlarged structural schematic diagram of the outer diameter machining unit disclosed in an embodiment of the present invention; Figure 10This is a schematic diagram showing the arrangement of the steel pipe transfer mechanism two and the steel pipe transfer mechanism three disclosed in an embodiment of the present invention; Figure 11 for Figure 10 A magnified view of a portion of the image; Figure 12 This is a partial perspective view of the steel pipe transfer mechanism two and steel pipe transfer mechanism three disclosed in the embodiments of the present invention; Figure 13 This is a schematic diagram of the steel pipe inspection unit disclosed in an embodiment of the present invention.

[0021] In the figure, the attached label is: 100, Intelligent machining system for the outer diameter of steel pipe; 1. Inspection station; 11. Steel pipe inspection unit; 111. Support frame; 112. Mounting frame; 113. Line laser sensor; 114. Roughness sensor; 115. Wall thickness sensor; 116. Sensor drive cylinder; 117. Concentric adjustment drive; 12. Weighing conveyor belt; 13. Inspection conveyor belt; 14. Interval; 2. Machining station; 21. External cylindrical machining unit; 211. Rough grinding unit; 212. Fine grinding unit; 213. Polishing unit; 22. Grinding conveyor belt one; 23. Grinding conveyor belt two; 24. Cooling system; 25. Grinding head; 26. Lifting platform; 27. Pitch cylinder; 3. Steel pipe transfer mechanism 1; 31. Linear slide rail 1; 32. Transport platform 1; 321. Slide seat; 322. Steel pipe lifting block; 323. Lifting drive; 324. Lifting drive guide rod; 4. Steel pipe transfer mechanism II; 41. Linear slide rail II; 42. Transport platform II; 5. Steel pipe transfer mechanism three; 51. Linear slide rail three; 52. Transport platform three; 6. Steel pipes; 7. Steel pipe unloading station; 71. Unloading rack; 72. Unloading rack partition; 8. Steel pipe loading station; 81. Loading rack; 82. Loading rack partition; 91. Limit switch one; 92. Limit switch two; 93. Limit switch three. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] One of the objectives of this invention is to provide an intelligent machining system for the outer diameter of steel pipes. This system dynamically adjusts process parameters through a feedback control system, enabling closed-loop machining of the outer diameter of steel pipes, including "inspection-grinding-re-inspection". This achieves automation, intelligence, and informatization in the machining of the outer diameter of steel pipes, improving the surface quality, processing efficiency, and product consistency of the outer diameter of steel pipes, thereby solving the problems existing in current steel pipe outer diameter machining technologies.

[0024] Another objective of this invention is to provide an intelligent machining method for the outer diameter of steel pipes. This method dynamically adjusts process parameters through a feedback control system, realizing a closed-loop machining process of "inspection-grinding-re-inspection" for the outer diameter of steel pipes. This method can improve the surface machining quality, machining efficiency, and product consistency of the outer diameter of steel pipes, and solve the problems existing in the current steel pipe outer diameter machining technology.

[0025] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Example 1 like Figure 1 and Figure 2As shown, this embodiment provides a steel pipe outer diameter intelligent processing system 100, which includes a detection station 1, a processing station 2, a steel pipe transfer mechanism 1 3, a steel pipe transfer mechanism 2 4, and a feedback control system. The detection station 1 includes a steel pipe conveying unit and a steel pipe detection unit 11. The steel pipe detection unit 11 is used to detect the quality parameters of the steel pipe 6 to be processed on the steel pipe conveying unit. The quality parameters include one or more combinations of steel pipe straightness, steel pipe surface roundness, steel pipe surface roughness, and steel pipe wall thickness. The processing station 2 includes an outer diameter processing unit 21 capable of processing the outer diameter of the steel pipe 6. Its processing parameters are mainly adjusted based on the detected quality parameters. The first steel pipe transfer mechanism 3 can transfer steel pipes 6 that fail the quality parameter inspection on the steel pipe conveying unit to the outer diameter processing unit 21 for outer diameter processing; the second steel pipe transfer mechanism 4 can transfer the processed steel pipes 6 on the outer diameter processing unit 21 to the steel pipe conveying unit, so that the steel pipe inspection unit 11 can re-inspect the quality parameters of the processed steel pipes 6 on the outer diameter processing unit 21 until the quality parameters of the steel pipes 6 are qualified, then the steel pipes 6 are cut and the outer diameter processing of the steel pipes 6 is performed. The feedback control system (shown in the figure) is communicatively connected to inspection station 1, processing station 2, steel pipe transfer mechanism 1 3, and steel pipe transfer mechanism 2 4. The feedback control system can dynamically adjust the number of processing and inspection cycles for each steel pipe 6 and the process parameters for the outer diameter processing unit 21 to process the outer diameter of the steel pipe 6 in each cycle based on the quality parameters measured by the steel pipe inspection unit 11. This realizes a closed-loop processing of the outer diameter of the steel pipe, which involves "inspection-grinding-re-inspection". The entire processing and inspection process does not require manual intervention, realizing the automation, intelligence, and informatization of the outer diameter processing of the steel pipe. This reduces or even eliminates the uncertainty of manual operation and improves the surface processing quality, processing efficiency, and product consistency of the outer diameter of the steel pipe.

[0027] The aforementioned steel pipe 6 is generally a metal round pipe, including but not limited to steel pipes.

[0028] In some feasible implementations, the aforementioned feedback control system preferably adopts a host computer, which is equipped with corresponding programs to control the closed-loop feedback intelligent processing of the outer circle of the steel pipe through "inspection-grinding-re-inspection".

[0029] In some feasible embodiments, the outer diameter machining unit 21 is preferably an outer diameter grinding unit, which mainly grinds the outer diameter of the steel pipe 6 to achieve the target roundness, wall thickness, and straightness. The infeed end of this outer diameter grinding unit is connected to a grinding conveyor belt 22, and the discharge end is connected to a grinding conveyor belt 23. The grinding conveyor belt 22, the conveyor belt of the outer diameter grinding unit itself, and the grinding conveyor belt 23 are connected end-to-end to ensure unidirectional transport of the steel pipe 6 during the outer diameter machining process. Figure 1 , Figure 8 and Figure 10As shown, the first grinding conveyor belt 22, the conveyor belt of the outer cylindrical grinding unit itself, and the second grinding conveyor belt 23 can all roll and support the steel pipe 6, allowing the steel pipe 6 to rotate in place during processing, thus ensuring that the outer cylindrical grinding unit 21 performs uniform circumferential grinding on the outer diameter of the steel pipe 6. The first grinding conveyor belt 22, the conveyor belt of the outer cylindrical grinding unit itself, and the second grinding conveyor belt 23 are all common conveyor units in steel pipe outer cylindrical grinding technology. The drive wheel of this conveyor unit has a certain deflection angle and can be driven by multiple three-phase asynchronous motors and one servo motor, enabling the spiral feed motion of the steel pipe. Further details are omitted here.

[0030] In the actual processing, the outer diameter processing unit 21 can perform outer diameter grinding on the steel pipe 6 transmitted by the first grinding conveyor belt 22, and the second grinding conveyor belt 23 can receive the steel pipe 6 processed on the outer diameter processing unit 21 and transmit the steel pipe 6 in a direction away from the outer diameter processing unit 21.

[0031] Some feasible implementation methods, such as Figure 9 and Figure 10 As shown, the outer cylindrical grinding unit includes a rough grinding unit 211, a fine grinding unit 212, and a polishing unit 213 arranged sequentially along the conveying direction of the steel pipe. Figure 2 and 8 As shown, there are two sets of coarse grinding units 211, four sets of fine grinding units 212, and two sets of polishing units 213. The structures of the coarse grinding units 211, fine grinding units 212, and polishing units 213 are roughly the same, with the main difference being the width and / or roughness of the grinding belts to achieve the corresponding processing effects.

[0032] The structural specifications of the coarse grinding unit 211, the fine grinding unit 212, and the polishing unit 213 can all follow existing technologies, or the following design can be adopted: like Figure 9 As shown, taking the rough grinding unit 211 as an example, it includes a grinding head 25, which is mounted on and rotatably connected to the lifting platform 26. The grinding end of the grinding head 25 is also connected to the lifting platform 26 via a pitch cylinder 27, with both ends of the pitch cylinder 27 hinged to the grinding head 25 and the lifting platform 26 respectively. The lifting platform 26 is mainly used to adjust the height of the grinding head 25, enabling coarse adjustment of the position of the grinding head 25 relative to the steel pipe 6. The extension and retraction of the pitch cylinder 27 drives the grinding head 25 to perform pitch adjustment relative to the lifting platform 26, achieving fine adjustment of the position of the grinding head 25 relative to the steel pipe 6. The rough grinding unit 211, fine grinding unit 212, and polishing unit 213 can each be equipped with a lifting platform 26, or... Figure 9 As shown, each of the rough grinding unit 211, fine grinding unit 212, and polishing unit 213 is connected to the lifting platform 26 via a pitching electric cylinder 27, all set on the same lifting platform 26.

[0033] The lifting platform 26 can be raised and lowered by hydraulic cylinder, pneumatic cylinder or electric cylinder; the pitch electric cylinder 27 can be replaced by a pneumatic cylinder or hydraulic cylinder as needed.

[0034] The grinding head 25 includes an abrasive belt wrapped around four wheels. The connection between the four wheels and the abrasive belt is roughly trapezoidal. Of the four wheels: the drive wheel is located at the lower left, the tension wheel at the upper left, the auxiliary wheel at the upper right, and the grinding wheel at the lower right. The positions of the auxiliary wheel and the drive wheel are fixed. The grinding head 25 is also equipped with an automatic tensioning mechanism, whose movement of the tension wheel can be adjusted by a pressure sensor. After the grinding head 25 is in place, before the abrasive belt contacts the workpiece surface, the automatic tensioning mechanism starts working, the drive motor starts, and drives the abrasive belt transmission system consisting of the drive wheel, grinding wheel, auxiliary wheel, and tension wheel through a coupling, causing the abrasive belt to start rotating at high speed. The automatic tensioning mechanism continuously monitors the radial pressure applied to the sanding belt by the tensioning wheel in real time through a high-precision pressure sensor installed on the tensioning wheel bearing seat. The system control unit compares the pressure data collected by the sensor with the preset target tension value, and adjusts the extension and retraction of the tensioning wheel according to the deviation signal to dynamically adjust the tension state of the sanding belt until the sanding belt reaches and stabilizes at the optimal preset tension level required by the process.

[0035] The entire machining station is also equipped with a cooling system 24, which precisely delivers coolant to the grinding zone through multiple redirection nozzles, significantly reducing the risk of thermal damage. The cooling system 24 is controlled by a three-phase asynchronous motor and works in conjunction with the outer cylindrical machining unit 21 to cool the outer wall of the steel pipe during grinding and to filter the coolant recovered during the grinding process.

[0036] In some feasible embodiments, the aforementioned steel pipe conveying unit includes a weighing conveyor belt 12 and an inspection conveyor belt 13 arranged sequentially along the steel pipe conveying direction. The weighing conveyor belt 12 is equipped with a weighing sensor to weigh the steel pipes 6 on the weighing conveyor belt 12. The steel pipe inspection unit 11 is disposed at the junction of the inspection conveyor belt 13 and the weighing conveyor belt 12, or disposed on the inspection conveyor belt 13. The steel pipe inspection unit 11 is used to inspect the aforementioned quality parameters of the steel pipes 6 entering the inspection conveyor belt 13. The first steel pipe transfer mechanism 3 can be specifically disposed between the first grinding conveyor belt 22 and the inspection conveyor belt 13, and the second steel pipe transfer mechanism 4 can be specifically disposed between the second grinding conveyor belt 23 and the weighing conveyor belt 12.

[0037] In some feasible implementations, it is preferable to arrange two load cells at each cross-section under the weighing conveyor belt 12, with four cross-sections arranged, for a total of eight load cells. The weighing conveyor belt 12 can adopt existing technology, and the specifics will not be elaborated here.

[0038] Some feasible implementation methods, such as Figure 1 and Figure 2 As shown, the preferred steel pipe detection unit 11 is located at the junction of the detection conveyor belt 13 and the weighing conveyor belt 12. Specifically, as... Figure 13 As shown, the steel pipe inspection unit 11 includes a support frame 111, a mounting frame 112, inspection components, and a concentric adjustment drive 117. The support frame 111 is set on the ground or a corresponding platform to stably support the mounting frame 112. The mounting frame 112 is a circular frame or a regular polygonal frame, and its inner space serves as both the passage space for the steel pipe 6 and the inspection site for the quality parameters of the steel pipe 6. The two sides of the mounting frame 112 are vertically slidably mounted on the support frame 111. The inspection components are set on the mounting frame 112. The inspection components include a line laser sensor 113, a roughness sensor 114, and a wall thickness sensor 115. Multiple line laser sensors 113 are evenly distributed along the circumference of the mounting frame 112. The line laser sensors 113 can detect the straightness and surface roundness of the steel pipe. Multiple sensors are set on the mounting frame 112. Sensor drive cylinders 116, the inner ends of each sensor drive cylinder 116 are located on a circle concentric with the mounting frame 112, and each sensor drive cylinder 116 is evenly distributed along the circumference of the mounting frame 112. The inner end of any sensor drive cylinder 116 is simultaneously provided with a roughness sensor 114 and a wall thickness sensor 115. The roughness sensor 114 and the wall thickness sensor 115 are used to detect the surface roughness and wall thickness of the steel pipe, respectively. Any sensor drive cylinder 116 is used to drive the corresponding roughness sensor 114 and wall thickness sensor 115 to move closer to or away from the surface of the steel pipe 6. The concentric adjustment drive 117 is connected between the support frame 111 and the mounting frame 112, and is used to drive the mounting frame 112 to rise and fall relative to the support frame 111, so that the mounting frame 112 is concentric with the steel pipe 6 fed into the detection conveyor belt 13.

[0039] Some feasible implementation methods, such as Figure 1 and Figure 2 As shown, both the detection conveyor belt 13 and the weighing conveyor belt 12 use conveyor rollers with a concave center and convex ends. The middle position of the conveyor rollers can center and limit the steel pipe 6, preventing it from shifting left or right during conveying and falling off the side of the conveyor belt. The centerline of the aforementioned mounting frame 112 is always aligned with the center of the conveyor rollers in the left-right direction (i.e., the width direction of the conveyor belt). When the steel pipe 6 reaches the junction of the detection conveyor belt 13 and the weighing conveyor belt 12, the mounting frame 112 is raised and lowered by the concentric adjustment drive 117, so that the mounting frame 112 is coaxially aligned with the conveying steel pipe 6. The concentric adjustment drive 117 includes, but is not limited to, linear drive mechanisms such as electric slides, electric cylinders, pneumatic cylinders, or hydraulic cylinders, such as servo electric cylinders.

[0040] In some feasible embodiments, preferably, four to six line laser sensors 113 are evenly distributed circumferentially around the central axis of the mounting frame 112; simultaneously, preferably, four roughness sensors 114 and four wall thickness sensors 115 are also evenly distributed circumferentially around the central axis of the mounting frame 112. Correspondingly, four sensor drive cylinders 116 are provided, and the sensor drive cylinders 116 are arranged radially along the circumference of the sensor arrangement, so that when the sensor drive cylinders 116 extend or retract, the circumferences of each roughness sensor 114 and each wall thickness sensor 115 are always concentric with the steel pipe 6. The sensor drive cylinders 116 include, but are not limited to, electric cylinders, pneumatic cylinders, or hydraulic cylinders.

[0041] In some feasible implementations, the mounting bracket 112 may be a regular octagon, such as... Figure 13 As shown.

[0042] In some feasible implementations, the grinding conveyor belt 22 and the inspection conveyor belt 13 are parallel and corresponding, such as... Figure 3 and Figure 4As shown, the steel pipe transfer mechanism 3 includes a linear slide rail, a transport table, and a linear drive. To distinguish it from the steel pipe transfer mechanisms 4 and 5 described below, the linear slide rail and transport table of the steel pipe transfer mechanism 3 are defined as linear slide rail 31 and transport table 32, respectively. The linear slide rail 31 is located below the grinding conveyor belt 22 and the inspection conveyor belt 13, and is perpendicular to the grinding conveyor belt 22 and the inspection conveyor belt 13. Multiple linear slide rails 31 are arranged parallel to each other along the conveying direction of the grinding conveyor belt 22. The transport table 32 is arranged in a one-to-one correspondence with the linear slide rail 31. The transport table 32 includes a slide block 321, a steel pipe lifting block 322, and a lifting drive 323. The slide block 321 slides with the corresponding linear slide rail 31. In conjunction with this, the steel pipe lifting block 322 is set on the top of the slide block 321 and is connected to the slide block 321 via the lifting drive 323; multiple intervals 14 are provided at intervals on both the grinding conveyor belt 22 and the inspection conveyor belt 13, and each interval 14 on the grinding conveyor belt 22 and the inspection conveyor belt 13 corresponds to a transport platform 32. The intervals 14 are used for the steel pipe lifting block 322 to pass through during the lifting process, so as to realize the picking and placing of the steel pipe 6 on the grinding conveyor belt 22 and / or the inspection conveyor belt 13; the linear drive corresponds to a transport platform 32 or all transport platforms 32 are connected to the same linear drive. This linear drive is used to drive the transport platform 32 to move along the linear slide rail 31, so as to realize the transfer of the steel pipe 6 between the grinding conveyor belt 22 and the inspection conveyor belt 13. The aforementioned linear drive can be a horizontally arranged electric cylinder, pneumatic cylinder, or hydraulic cylinder, which can drive the transport platform 32 to reciprocate along the linear slide rail 31. Correspondingly, the lifting drive 323 preferably uses a vertically arranged electric cylinder, pneumatic cylinder, or hydraulic cylinder, with its bottom fixed to the slide 321 and its top sliding through the top of the slide 321. A steel pipe lifting block 322 is connected to the top of the lifting drive 323, allowing for lifting and adjustment through the telescopic movement of the lifting drive 323. Figure 5 and Figure 6 The diagrams shown are schematics of the steel pipe lifting block 322 in the lifting state and in the lowering state, respectively.

[0043] To improve the lifting stability of the slide block 321, it is preferable to connect a lifting drive guide rod 324 to the lower part of the slide block 321. The lifting drive guide rod 324 passes through the top surface of the slide block 321 and slides in cooperation with the slide block 321. When the lifting drive 323 drives the steel pipe support block 322 to rise and fall, the lifting drive guide rod 324 can guide the lifting direction of the steel pipe support block 322 by utilizing its sliding cooperation with the slide block 321. Figure 7 As shown, the lifting drive 323 is located at the center of the slide block 321, and two lifting drive guide rods 324 are provided and symmetrically arranged on both sides of the lifting drive 323. This design can ensure that the steel pipe is stable in position during the lifting process, does not shake, and prevents the steel pipe from falling.

[0044] In some feasible implementations, in order to ensure the transfer stability of the steel pipe transfer mechanism 3 to the steel pipe 6, it is preferable that the top surface of the steel pipe support block 322 adopts a V-shaped surface, and the central concave design of the V-shaped surface can be used to limit the offset and rolling of the steel pipe.

[0045] When it is necessary to transfer the steel pipe 6 on the inspection conveyor belt 13 to the grinding conveyor belt 22, the transport table 32 is first driven to a position below the inspection conveyor belt 13 using a linear drive. At this time, the steel pipe lifting block 322 is in position... Figure 6 The system is shown in the lowering state; then, the lifting drive 323 drives the steel pipe lifting block 322 to rise until the steel pipe lifting block 322 passes through the corresponding interval 14 and contacts the steel pipe 6 on the detection conveyor belt 13. Then, the steel pipe lifting block 322 continues to rise to a certain height, such as... Figure 5 As shown, the steel pipe 6 is positioned above the end of the conveyor roller. Then, a linear drive moves the transport table 32 towards the grinding conveyor belt 22, embedding it from the side into the interval 14 on the grinding conveyor belt 22. After ensuring alignment of the steel pipe 6 with the grinding conveyor belt 22, the lifting drive 323 lowers the steel pipe lifting block 322, passing through the corresponding interval 14 until the steel pipe 6 is placed on the grinding conveyor belt 22. The steel pipe lifting block 322 then continues to descend a certain height, ensuring its highest point is lower than the lowest point of the grinding conveyor belt 22, without affecting its normal function. Repeating this process completes the transfer of each steel pipe 6 from the inspection conveyor belt 13 to the grinding conveyor belt 22.

[0046] In some feasible implementations, the intelligent machining system 100 for the outer diameter of steel pipes also includes a steel pipe blanking station 7, such as... Figure 3 and Figure 4 As shown, the steel pipe unloading station 7 is located on the side of the inspection conveyor belt 13 away from the grinding conveyor belt 22. The steel pipe unloading station 7 includes multiple unloading racks 71 arranged parallel to each other along the conveying direction of the inspection conveyor belt 13. Each adjacent unloading rack 71 has an unloading rack partition 72. Each linear slide rail 31 has a corresponding unloading rack partition 72, and the end of any linear slide rail 31 away from the grinding conveyor belt 22 extends into the corresponding unloading rack partition 72, so that the transport table 32 can transfer the steel pipes 6 that have passed the quality parameter inspection on the inspection conveyor belt 13 to each unloading rack 71 of the steel pipe unloading station 7 along the linear slide rail 31, and the steel pipes are supported by each unloading rack 71.

[0047] To ensure smooth unloading and transfer of qualified steel pipes, it is preferable that the top support surface of any unloading rack 71 is a downward sloping surface moving away from the inspection conveyor belt 13. The high end of this slope is approximately the same height as the inspection conveyor belt 13, and a limiting baffle is installed at the low end of the slope to prevent the steel pipes from rolling off. Setting the top support surface of the unloading rack 71 as a slope facilitates the automatic rolling of received steel pipes to the low end for storage, ensuring that the high end of the unloading rack 71 always has space to smoothly receive the next steel pipe.

[0048] In some feasible implementations, the grinding conveyor belt 23 and the weighing conveyor belt 12 are parallel and corresponding, such as... Figures 10-12 As shown, the structure and layout of the steel pipe transfer mechanism 24 are basically similar to those of the aforementioned steel pipe transfer mechanism 13, with the main difference being: The linear slide rail 241 of the steel pipe transfer mechanism 24 is located below the grinding conveyor belt 23 and the weighing conveyor belt 12, and is perpendicular to the grinding conveyor belt 23 and the weighing conveyor belt 12; multiple linear slide rails 241 are arranged parallel to each other at intervals along the conveying direction of the grinding conveyor belt 23. The second transport platform 42 (with the same structure and working principle as the first transport platform 32) is arranged in a one-to-one correspondence with the second linear slide rail 41. The slide seat 321 of the second transport platform 42 slides in cooperation with the corresponding linear slide rail 41. Multiple intervals 14 are provided on both the second grinding conveyor belt 23 and the weighing conveyor belt 12. The intervals 14 of the second grinding conveyor belt 23 and the weighing conveyor belt 12 correspond one-to-one with the second transport platform 42. The intervals 14 of the second grinding conveyor belt 23 and the weighing conveyor belt 12 are used for the steel pipe lifting block 322 of the second transport platform 42 to pass through during the lifting and lowering process, so as to realize the picking and placing of the steel pipe 6 on the second grinding conveyor belt 23 and / or the weighing conveyor belt 12.

[0049] The steel pipe transfer principle of steel pipe transfer mechanism 2.4 is as follows: When it is necessary to transfer the steel pipe 6 on the second grinding conveyor belt 23 to the weighing conveyor belt 12, firstly, the second transport table 42 is driven to the underside of the second grinding conveyor belt 23 using a linear drive. At this time, the steel pipe lifting block 322 is in position. Figure 6 The image shows the descent state; then, the lifting drive 323 drives the steel pipe lifting block 322 to rise until the steel pipe lifting block 322 passes through the corresponding interval 14 on the second grinding conveyor belt 23 and contacts the steel pipe 6 on the second grinding conveyor belt 23. Then, the steel pipe lifting block 322 continues to rise to a certain height, such as... Figure 5As shown, the steel pipe 6 is positioned above the second grinding conveyor belt 23. Then, a linear drive is used to move the second transport platform 42 towards the weighing conveyor belt 12, embedding it from the side into the interval 14 on the weighing conveyor belt 12. After ensuring the steel pipe 6 is aligned with the weighing conveyor belt 12, the lifting drive 323 drives the steel pipe lifting block 322 to descend. The steel pipe lifting block 322 passes through the corresponding interval 14 until it descends to the point where the steel pipe 6 is placed on the weighing conveyor belt 12. The steel pipe lifting block 322 then continues to descend a certain height so that its highest point is lower than the lowest point of the weighing conveyor belt 12, without affecting the normal function of the weighing conveyor belt 12. Repeating the above process completes the transfer of each steel pipe 6 from the second grinding conveyor belt 23 to the weighing conveyor belt 12.

[0050] In some feasible implementations, the intelligent steel pipe outer diameter processing system 100 further includes a steel pipe loading station 8, which is located on the side of the weighing conveyor belt 12 away from the grinding conveyor belt 23; for example... Figures 10-12 As shown, the steel pipe loading station 8 includes multiple loading racks 81 arranged parallel to each other along the conveying direction of the weighing conveyor belt 12, and each adjacent loading rack 81 is separated by a loading rack partition 82. To facilitate the transfer of steel pipes between the steel pipe loading station 8 and the weighing conveyor belt 12, the linear guide rail 2 41 can be designed in the same way as the linear guide rail 1 31, that is, each linear guide rail 2 41 corresponds to a loading rack partition 82, and the end of any linear guide rail 2 41 away from the grinding conveyor belt 2 23 extends into the corresponding loading rack partition 82, so that the transport table 2 42 can transfer the steel pipes supported on each loading rack 81 in the steel pipe loading station 8 to the weighing conveyor belt 12 along the linear guide rail 2 41 for closed-loop processing of inspection-processing-re-inspection. In addition to the aforementioned structural design extending the linear guide rail 241 into the loading rack partition 82, a steel pipe transfer mechanism 35 can also be installed between the steel pipe loading station 8 and the weighing conveyor belt 12. For example... Figures 10-12 As shown, the structure of the steel pipe transfer mechanism 35 is the same as that of the steel pipe transfer mechanism 24. Any straight slide rail 351 of the steel pipe transfer mechanism 35 is set below the weighing conveyor belt 12 and extends into the corresponding loading rack partition 82.

[0051] It should be noted that, such as Figure 11 As shown, a steel pipe transfer mechanism is provided on each side of the weighing conveyor belt 12. In order to avoid interference between the mechanisms and to ensure the structural performance of the weighing conveyor belt 12, it is preferable that the interval 14 between the two steel pipe transfer mechanisms of the weighing conveyor belt 12 is staggered in the conveying direction of the weighing conveyor belt 12.

[0052] To ensure smooth unloading and transfer of processed steel pipes, it is preferable that the top support surface of any loading rack 81 is a downward sloping surface towards the weighing conveyor belt 12. The lower end of this slope is approximately at the same height as the weighing conveyor belt 12. This lower end of the slope serves as the loading end and is equipped with a limiting baffle to prevent the steel pipes from rolling off. The sloping top support surface of the loading rack 81 facilitates the automatic rolling of steel pipes to be processed to the lower end for temporary storage, ensuring that the lower end of the loading rack 81 always holds steel pipes, thus guaranteeing continuous processing of the system.

[0053] The steel pipe transfer principle of the steel pipe transfer mechanism 3.5 is as follows: When raw steel pipes to be processed need to be supplied to the system, steel pipes 6 are first placed on the loading rack 81. The steel pipes 6 automatically roll down to the lower end of the loading rack 81, waiting to be loaded. When new steel pipes 6 need to be supplied to the weighing conveyor belt 12, the linear drive of the steel pipe transfer mechanism 35 is first used to drive the transport table 352 into the loading rack aisle 82. At this time, the steel pipe lifting block 322 is in position. Figure 6 In the shown landing state, the steel pipe lifting block 322 is located below the steel pipe 6 at the lower end of the loading rack 81. Then, the lifting drive 323 drives the steel pipe lifting block 322 to be lifted until the steel pipe lifting block 322 contacts the steel pipe 6 at the lower end of the loading rack 81. Then the steel pipe lifting block 322 continues to be lifted to a certain height until the steel pipe 6 is higher than the end of the conveyor roller on the weighing conveyor belt 12. Then, using a linear drive, the transport platform 3 52 is moved towards the weighing conveyor belt 12, and the transport platform 3 52 is inserted into the interval 14 on the weighing conveyor belt 12 from the side (away from the grinding conveyor belt 2 23). After ensuring that the steel pipe 6 is aligned with the weighing conveyor belt 12, the lifting drive 323 drives the steel pipe lifting block 322 to descend. The steel pipe lifting block 322 passes through the corresponding interval 14 until it lands on the weighing conveyor belt 12. Then, the steel pipe lifting block 322 continues to descend a certain height so that the highest point of the steel pipe lifting block 322 is lower than the lowest point of the weighing conveyor belt 12, so as not to affect the normal use function of the weighing conveyor belt 12. By repeating the above process, the transfer of each steel pipe 6 from the loading rack 81 to the weighing conveyor belt 12 can be completed.

[0054] In some feasible implementations, to ensure the automated, reliable, and smooth operation of the system and to avoid collisions between steel pipes, the preferred steel pipe outer diameter intelligent processing system 100 is also equipped with a limit component. This limit component specifically includes limit switch one 91, limit switch two 92, and limit switch three 93. Limit switch one 91 is mounted on the grinding conveyor belt two 23, located at the end of the grinding conveyor belt two 23 closest to the discharge end of the outer diameter grinding unit; limit switch two 92 is mounted on the grinding conveyor belt two 23, located at the end of the grinding conveyor belt two 23 furthest from the discharge end of the outer diameter grinding unit; limit switch three 93 is mounted on the detection conveyor belt 13, located at the end of the detection conveyor belt 13. Limit switches one 91, two 92, and three 93 may include, but are not limited to, photoelectric switches, mechanical switches, etc.

[0055] The following is combined Figure 1 and Figure 2 Taking the machining of the outer diameter of a steel pipe as an example, the working principle of the aforementioned intelligent machining system 100 for the outer diameter of steel pipes will be explained in detail. The workflow for machining the outer diameter of a steel pipe is as follows: Step 1: In the initial stage, input the batch information of the steel pipes into the host computer, and start the inspection conveyor belt 13 and the weighing transfer belt 12 at the same time; Step 2: Control the linear drive of the steel pipe transfer mechanism 35 to move the transport platform 352 along the linear slide rail 351 to the bottom of the steel pipe at the lower end of the loading rack 81. The lifting drive 323 in the transport platform 352 is activated to lift the steel pipe lifting block 322 until the steel pipe is raised above the loading rack 81. Then, control the linear drive of the steel pipe transfer mechanism 35 to move the transport platform 352 along the linear slide rail 351 to the weighing transfer belt 12. Then, the lifting drive 323 in the transport platform 352 is activated to lower the steel pipe lifting block 322 until the steel pipe is placed on the weighing transfer belt 12, completing the transfer and loading of the steel pipe from the loading rack 81 to the weighing transfer belt 12. After the steel pipe is transported onto the weighing conveyor belt 12, the eight weighing sensors are integrated to weigh and measure the weight of the steel pipe. At the same time, the steel pipe moves towards the steel pipe detection unit 11 along the conveying direction of the weighing conveyor belt 12. Step 3: When the steel pipe moves into the inspection conveyor belt 13, it passes through the steel pipe inspection unit 11 for inspection: (1) The steel pipe detection unit 11 starts the concentric adjustment drive 117 to adjust the mounting frame 112 to be concentric or basically concentric with the steel pipe according to the initial input steel pipe information; (2) At the same time, the sensor drive cylinder 116 starts, driving the roughness sensor 114 and the wall thickness sensor 115 to come close to the surface of the steel pipe. (3) When the steel pipe continues to pass through the mounting frame 112, the line laser sensor 113 scans the surface of the steel pipe, the roughness sensor 114 detects the original surface roughness of the steel pipe, and the wall thickness sensor 115 detects the wall thickness of the steel pipe. (4) The point cloud data obtained by the laser sensors 113 of each line are spliced ​​together to form a complete three-dimensional point cloud data of the steel pipe and the model is reconstructed. The straightness and roundness of the steel pipe are calculated according to the three-dimensional model, and the roughness detection data and wall thickness detection data are combined to determine whether the geometric dimensions and surface parameters of the steel pipe meet the target parameter requirements. (5) If the requirements are not met, then proceed to step 4, that is, generate the steel pipe outer circle grinding process parameters (grinding amount, grinding pressure, grinding speed) based on the measured steel pipe straightness, steel pipe roundness, roughness detection data, wall thickness detection data, etc., and allocate them to the rough grinding unit 211 and the fine grinding unit 212; if the requirements are met, then proceed to step 5, that is, store the measured steel pipe straightness, steel pipe roundness, roughness detection data, wall thickness detection data, etc. to the host computer; Step 4: After the steel pipe has been inspected by the steel pipe inspection unit 11, it continues to move along the inspection conveyor belt 13 until the limit switch 93 is triggered. At this time, the inspection conveyor belt 13 stops running. If the limit switch 91 is not triggered at this time: (1) The system adjusts the running speed of grinding conveyor belt 1 22 and grinding conveyor belt 23 according to the generated grinding process parameters; controls the operation of lifting platform 26 in rough grinding, fine grinding and polishing units, and adjusts the height of grinding unit 28; (2) Start the linear drive of the steel pipe transfer mechanism 3 at the inspection conveyor belt 13 to move the transport table 32 to the bottom of the inspection conveyor belt 13. After the steel pipe is lifted by the transport table 32, the linear drive of the steel pipe transfer mechanism 3 will move the transport table 32 to the grinding conveyor belt 22 and place the steel pipe on the grinding conveyor belt 22 through the transport table 32. (3) Afterwards, the steel pipe moves along the grinding conveyor belt 22 and enters the coarse grinding unit 211, fine grinding unit 212 and polishing unit 213 in sequence for grinding and polishing. When the steel pipe triggers the limit switch 91 and the limit switch 93 is not triggered, the detection conveyor belt 13 is started and step 2 is repeated to transport the other steel pipe ② from the loading rack 81 to the weighing transfer belt 12. Then step 3 is repeated. (4) When the steel pipe finishes grinding, enters the second grinding conveyor belt 23 and triggers the second limit switch 92, the first limit switch 91 stops triggering, and the first grinding conveyor belt 22 and the second grinding conveyor belt 23 stop running: a. If limit switch 393 is triggered at this time, the linear drive of steel pipe transfer mechanism 4 at grinding conveyor belt 23 will be activated to move transport platform 42 to below grinding conveyor belt 23. After the steel pipe on grinding conveyor belt 23 is lifted by transport platform 42, the linear drive of steel pipe transfer mechanism 4 will move transport platform 42 to weighing conveyor belt 12. The steel pipe will be placed on weighing conveyor belt 12 by transport platform 42. After the steel pipe is transported from the end of grinding conveyor belt 23 to weighing conveyor belt 12, the steel pipe weighing in step 2 and step 3 will be repeated. b. While performing step 4 (4) a, repeat step 3 for the newly loaded steel pipe ② in step 4 (3); Step 5: After the steel pipe in step 4(4)a has been inspected by the steel pipe inspection unit 11, it continues to move along the inspection conveyor belt 13 until the limit switch 93 is triggered. The inspection conveyor belt 13 stops running. According to the steel pipe inspection quality parameters in step 4(4)a, it is determined whether the geometric dimensions and surface parameters of the steel pipe meet the target parameter requirements. If the requirements are met, the steel pipe transfer mechanism 3 at the unloading rack 71 is started to transport the qualified steel pipe from the end of the inspection conveyor belt 13 to the unloading rack 71 to complete the steel pipe processing. If it is still unqualified, it is re-grinded according to step 4, and the operation is repeated in this way.

[0056] This solution enables seamless integration from rough grinding to fine grinding and then to polishing through the configuration of each workstation unit and process control, realizing closed-loop control processing that links steel pipe quality inspection with intelligent generation of grinding and polishing parameters.

[0057] This solution adopts a modular layout, including independently set loading and unloading stations, inspection stations, and grinding and polishing stations. The stations are automatically transferred through a conveyor system, forming a complete process flow and automated production line layout of "inspection-grinding (processing)-re-inspection".

[0058] The proposed steel pipe outer diameter machining system enables closed-loop processing of the steel pipe outer diameter, encompassing "inspection-grinding (machining)-re-inspection," achieving the goal of completing all processes in a single operation. The machining station employs multiple sets of abrasive belt grinding units (rough grinding, fine grinding, polishing) and adjustable grinding heads working in tandem. Combined with a control system that monitors steel pipe surface defects in real time, the system can automatically formulate and execute grinding plans based on the morphology of the steel pipe. The feedback control system dynamically adjusts the machining process parameters at the machining station, achieving automated, intelligent, and information-based grinding and polishing. This system uses abrasive belts instead of traditional grinding wheels for grinding and polishing, providing flexibility and adaptive contact with the steel pipe's outer diameter, reducing surface scratches caused by rigid impacts. Simultaneously, the cooling system 24 precisely delivers coolant to the grinding zone through multiple redirection nozzles, significantly reducing the risk of thermal damage.

[0059] Example 2 This embodiment proposes an intelligent machining method for the outer diameter of steel pipes, implemented based on the intelligent machining system 100 for the outer diameter of steel pipes in Embodiment 1, and mainly includes the following steps: Step 1: Input the information of 6 batches of steel pipes to be processed into the feedback control system, and start the detection conveyor belt 13 and the weighing conveyor belt 12 at the same time; Step 2: Move the steel pipe 6 to the weighing conveyor belt 12; while the steel pipe 6 is being transported by the weighing conveyor belt 12, measure the weight of the steel pipe 6. Step 3: During the process of steel pipe 6 being conveyed into the inspection conveyor belt 13, the quality parameters of steel pipe 6 are detected by the inspection component, and it is determined whether the measured quality parameters meet the target parameters. If the measured quality parameters are determined to be unqualified, steel pipe 6 is unqualified and step 4 is executed. If the measured quality parameters are determined to meet the target parameters, steel pipe 6 is qualified and step 5 is executed. Step 4: Adjust the process parameters of the outer diameter machining unit 21 according to the measured quality parameters, and transfer the steel pipe 6 on the inspection conveyor belt 13 to the feeding conveyor belt through the steel pipe transfer mechanism 1 3. The feeding conveyor belt will then transport the steel pipe 6 to the outer diameter machining unit 21 for outer diameter machining. The finished steel pipe 6 on the outer diameter machining unit 21 will be received and transported through the grinding conveyor belt 2 23. Steps 2 and 3 will be executed to re-inspect the quality parameters of the steel pipe 6. Step 5: Transfer the qualified steel pipe 6 from the inspection conveyor belt 13 for unloading.

[0060] The following section uses the machining of the outer diameter of a steel pipe as an example to explain the workflow of the above-mentioned intelligent machining method for the outer diameter of steel pipes: Step 1: In the initial stage, input the batch information of the steel pipes into the host computer, and start the inspection conveyor belt 13 and the weighing transfer belt 12 at the same time; Step 2: Control the linear drive of the steel pipe transfer mechanism 35 to move the transport platform 352 along the linear slide rail 351 to the bottom of the steel pipe at the lower end of the loading rack 81. The lifting drive 323 in the transport platform 352 is activated to lift the steel pipe lifting block 322 until the steel pipe is raised above the loading rack 81. Then, control the linear drive of the steel pipe transfer mechanism 35 to move the transport platform 352 along the linear slide rail 351 to the weighing transfer belt 12. Then, the lifting drive 323 in the transport platform 352 is activated to lower the steel pipe lifting block 322 until the steel pipe is placed on the weighing transfer belt 12, completing the transfer and loading of the steel pipe from the loading rack 81 to the weighing transfer belt 12. After the steel pipe is transported onto the weighing conveyor belt 12, the eight weighing sensors are integrated to weigh and measure the weight of the steel pipe. At the same time, the steel pipe moves towards the steel pipe detection unit 11 along the conveying direction of the weighing conveyor belt 12. Step 3: When the steel pipe moves into the inspection conveyor belt 13, it passes through the steel pipe inspection unit 11 for inspection: (1) The steel pipe detection unit 11 starts the concentric adjustment drive 117 to adjust the mounting frame 112 to be concentric or basically concentric with the steel pipe according to the initial input steel pipe information; (2) At the same time, the sensor drive cylinder 116 starts, driving the roughness sensor 114 and the wall thickness sensor 115 to come close to the surface of the steel pipe. (3) When the steel pipe continues to pass through the mounting frame 112, the line laser sensor 113 scans the surface of the steel pipe, the roughness sensor 114 detects the original surface roughness of the steel pipe, and the wall thickness sensor 115 detects the wall thickness of the steel pipe. (4) The point cloud data obtained by the laser sensors 113 of each line are spliced ​​together to form a complete three-dimensional point cloud data of the steel pipe and the model is reconstructed. The straightness and roundness of the steel pipe are calculated according to the three-dimensional model, and the roughness detection data and wall thickness detection data are combined to determine whether the geometric dimensions and surface parameters of the steel pipe meet the target parameter requirements. (5) If the requirements are not met, then proceed to step 4, that is, generate the steel pipe outer circle grinding process parameters (grinding amount, grinding pressure, grinding speed) based on the measured steel pipe straightness, steel pipe roundness, roughness detection data, wall thickness detection data, etc., and allocate them to the rough grinding unit 211 and the fine grinding unit 212; if the requirements are met, then proceed to step 5, that is, store the measured steel pipe straightness, steel pipe roundness, roughness detection data, wall thickness detection data, etc. to the host computer; Step 4: After the steel pipe has been inspected by the steel pipe inspection unit 11, it continues to move along the inspection conveyor belt 13 until the limit switch 93 is triggered. At this time, the inspection conveyor belt 13 stops running. If the limit switch 91 is not triggered at this time: (1) The system adjusts the running speed of grinding conveyor belt 1 22 and grinding conveyor belt 23 according to the generated grinding process parameters; controls the operation of lifting platform 26 in rough grinding, fine grinding and polishing units, and adjusts the height of grinding unit 28; (2) Start the linear drive of the steel pipe transfer mechanism 3 at the inspection conveyor belt 13 to move the transport table 32 to the bottom of the inspection conveyor belt 13. After the steel pipe is lifted by the transport table 32, the linear drive of the steel pipe transfer mechanism 3 will move the transport table 32 to the grinding conveyor belt 22 and place the steel pipe on the grinding conveyor belt 22 through the transport table 32. (3) Afterwards, the steel pipe moves along the grinding conveyor belt 22 and enters the coarse grinding unit 211, fine grinding unit 212 and polishing unit 213 in sequence for grinding and polishing. When the steel pipe triggers the limit switch 91 and the limit switch 93 is not triggered, the detection conveyor belt 13 is started and step 2 is repeated to transport the other steel pipe ② from the loading rack 81 to the weighing transfer belt 12. Then step 3 is repeated. (4) When the steel pipe finishes grinding, enters the second grinding conveyor belt 23 and triggers the second limit switch 92, the first limit switch 91 stops triggering, and the first grinding conveyor belt 22 and the second grinding conveyor belt 23 stop running: a. If limit switch 393 is triggered at this time, the linear drive of steel pipe transfer mechanism 4 at grinding conveyor belt 23 will be activated to move transport platform 42 to below grinding conveyor belt 23. After the steel pipe on grinding conveyor belt 23 is lifted by transport platform 42, the linear drive of steel pipe transfer mechanism 4 will move transport platform 42 to weighing conveyor belt 12. The steel pipe will be placed on weighing conveyor belt 12 by transport platform 42. After the steel pipe is transported from the end of grinding conveyor belt 23 to weighing conveyor belt 12, the steel pipe weighing in step 2 and step 3 will be repeated. b. While performing step 4 (4) a, repeat step 3 for the newly loaded steel pipe ② in step 4 (3); Step 5: After the steel pipe in step 4(4)a has been inspected by the steel pipe inspection unit 11, it continues to move along the inspection conveyor belt 13 until the limit switch 93 is triggered. The inspection conveyor belt 13 stops running. According to the steel pipe inspection quality parameters in step 4(4)a, it is determined whether the geometric dimensions and surface parameters of the steel pipe meet the target parameter requirements. If the requirements are met, the steel pipe transfer mechanism 3 at the unloading rack 71 is started to transport the qualified steel pipe from the end of the inspection conveyor belt 13 to the unloading rack 71 to complete the steel pipe processing. If it is still unqualified, it is re-grinded according to step 4, and the operation is repeated in this way.

[0061] It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and objectives of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0062] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A steel pipe external circle intelligent machining system, characterized in that, The utility model relates to a kind of steel pipe processing system, including: Detection station (1), including steel pipe conveying unit and steel pipe detection unit (11), the steel pipe detection unit (11) includes detection assembly, the detection assembly includes line laser sensor (113), roughness sensor (114) and wall thickness sensor (115), the steel pipe detection unit (11) is used for detecting the quality parameter of steel pipe (6) to be processed on the steel pipe conveying unit, the quality parameter includes one or more combinations of steel pipe straightness, steel pipe surface roundness, steel pipe surface roughness and steel pipe wall thickness; Processing station (2), including the external circle processing unit (21) capable of carrying out external circle processing to steel pipe (6); Steel pipe transfer mechanism one (3) can transfer the steel pipe (6) of the quality parameter detection unqualified on the steel pipe conveying unit to the external circle processing unit (21) and carry out external circle processing; Steel pipe transfer mechanism two (4) can transfer the steel pipe (6) processed in the external circle processing unit (21) to the steel pipe conveying unit, to carry out the quality parameter detection again to the steel pipe (6) processed in the external circle processing unit (21) by the steel pipe detection unit (11); Feedback control system, communication connection with detection station (1), processing station (2), steel pipe transfer mechanism one (3) and steel pipe transfer mechanism two (4), the feedback control system can dynamically adjust the processing, detection cycle number of each steel pipe (6) and the process parameter of external circle processing unit (21) in each cycle according to the quality parameter measured by the steel pipe detection unit (11).

2. The intelligent machining system for the outer circle of a steel pipe according to claim 1, characterized in that, The external circle processing unit (21) is external circle polishing unit, the feeding end of the external circle polishing unit is connected with polishing conveyor belt one (22), and the discharging end of the external circle polishing unit is connected with polishing conveyor belt two (23);The external circle processing unit (21) can carry out external circle processing to the steel pipe (6) conveyed by the polishing conveyor belt one (22), and the polishing conveyor belt two (23) can receive the steel pipe (6) processed in the external circle processing unit (21) and convey the steel pipe (6) away from the external circle processing unit (21).

3. The intelligent machining system for the outer circle of a steel pipe according to claim 2, characterized in that, The steel pipe conveying unit includes weighing conveyor belt (12) and detection conveyor belt (13) arranged in sequence along the steel pipe conveying direction, the weighing conveyor belt (12) is provided with a weighing sensor, and the steel pipe (6) on the weighing conveyor belt (12) can be weighed; The steel pipe detection unit (11) is arranged at the connection between the detection conveyor belt (13) and the weighing conveyor belt (12), or on the detection conveyor belt (13), and is used for detecting the quality parameter of the steel pipe (6) conveyed into the detection conveyor belt (13); The steel pipe transfer mechanism one (3) is arranged between the polishing conveyor belt one (22) and the detection conveyor belt (13), and the steel pipe transfer mechanism two (4) is arranged between the polishing conveyor belt two (23) and the weighing conveyor belt (12).

4. The intelligent machining system for the outer circle of a steel pipe according to claim 3, characterized in that, The steel pipe detection unit (11) is arranged at the joint of the detection conveying belt (13) and the weighing conveying belt (12), and comprises: a support frame (111); a mounting frame (112) which is a circular frame or a regular polygon frame, and is vertically slidingly arranged on the support frame (111); the detection assembly is arranged on the mounting frame (112), a plurality of line laser sensors (113) are uniformly distributed along the circumference of the mounting frame (112), the line laser sensors (113) can detect the straightness of the steel pipe and the surface roundness of the steel pipe; a plurality of sensor driving cylinders (116) are arranged on the mounting frame (112), the inner ends of the sensor driving cylinders (116) are located on a circle concentric with the mounting frame (112), and the sensor driving cylinders (116) are uniformly distributed along the circumference of the mounting frame (112); the inner end of any one of the sensor driving cylinders (116) is provided with the roughness sensor (114) and the wall thickness sensor (115) at the same time, the roughness sensor (114) and the wall thickness sensor (115) are respectively used for detecting the surface roughness of the steel pipe and the wall thickness of the steel pipe, and any one of the sensor driving cylinders (116) is used for driving the corresponding roughness sensor (114) and wall thickness sensor (115) to approach or move away from the surface of the steel pipe (6); a concentric adjustment drive (117) connected between the support frame (111) and the mounting frame (112) is used for driving the mounting frame (112) to ascend or descend relative to the support frame (111), so that the mounting frame (112) is concentric with the steel pipe (6) conveyed into the detection conveying belt (13).

5. The intelligent machining system for the outer circle of a steel pipe according to claim 3 or 4, characterized in that, The grinding conveying belt (22) and the detection conveying belt (13) correspond in parallel, and the steel pipe transfer mechanism (3) comprises: a linear slide rail, which is arranged below the grinding conveying belt (22) and the detection conveying belt (13) and is perpendicular to the grinding conveying belt (22) and the detection conveying belt (13); a plurality of linear slide rails are arranged in parallel and at intervals along the conveying direction of the grinding conveying belt (22); a transport table corresponding to the linear slide rails one by one, the transport table comprises a sliding seat (321), a steel pipe lifting block (322) and a lifting drive (323), the sliding seat (321) is slidingly matched with the corresponding linear slide rail, the steel pipe lifting block (322) is arranged on the top of the sliding seat (321) and is connected with the sliding seat (321) through the lifting drive (323); a plurality of intervals are arranged at intervals on the grinding conveying belt (22) and the detection conveying belt (13), the intervals on the grinding conveying belt (22) and the detection conveying belt (13) correspond to the transport tables one by one, and the intervals are used for the steel pipe lifting block (322) to pass through in the lifting process, so as to realize the taking and placing of the steel pipe (6) on the grinding conveying belt (22) and / or the detection conveying belt (13). Linear drive, one-to-one correspondence or all the transport platform is connected with the same linear drive, the linear drive is used for driving the transport platform to move along the linear slide rail, to realize the transfer of the steel pipe (6) between the grinding conveyor belt one (22) and the detection conveyor belt (13).

6. The intelligent machining system for the outer circle of a steel pipe according to claim 5, characterized in that, Also includes a steel pipe unloading station (7), the steel pipe unloading station (7) is set up in the detection conveyor belt (13) away from the grinding conveyor belt one (22) side; the steel pipe unloading station (7) includes a plurality of unloading frame (71) is arranged in parallel along the direction of the detection conveyor belt (13) interval, any adjacent unloading frame (71) between the unloading frame (72) has a lane; Each of the linear slide rail corresponds to a unloading frame lane (72), and the end of any linear slide rail away from the grinding conveyor belt one (22) extends into the corresponding unloading frame lane (72), so that the transport platform can transfer the steel pipe (6) on the detection conveyor belt (13) to the steel pipe unloading station (7).

7. The intelligent machining system for the outer circle of a steel pipe according to claim 3 or 4, characterized in that, The grinding conveyor belt two (23) and the weighing conveyor belt (12) are parallel to each other, and the steel pipe transfer mechanism two (4) comprises: Linear slide rail, the linear slide rail is arranged below the grinding conveyor belt two (23) and the weighing conveyor belt (12), and is perpendicular to the grinding conveyor belt two (23) and the weighing conveyor belt (12); the linear slide rail is arranged in parallel along the direction of the grinding conveyor belt two (23) interval; Transport platform, arranged one-to-one with the linear slide rail, the transport platform comprises a slide (321), a steel pipe lifting block (322) and a lifting drive (323), the slide (321) is in sliding fit with the corresponding linear slide rail, the steel pipe lifting block (322) is arranged on the top of the slide (321) and is connected with the slide (321) through the lifting drive (323); the grinding conveyor belt two (23) and the weighing conveyor belt (12) are arranged with a plurality of intervals, the intervals of the grinding conveyor belt two (23) and the weighing conveyor belt (12) correspond to the transport platform one-to-one, the intervals are used for the steel pipe lifting block (322) to pass through in the lifting process, to realize the taking and placing of the steel pipe (6) on the grinding conveyor belt two (23) and / or the weighing conveyor belt (12); Linear drive, one-to-one correspondence or all the transport platform is connected with the same linear drive, the linear drive is used for driving the transport platform to move along the linear slide rail, to realize the transfer of the steel pipe (6) between the grinding conveyor belt two (23) and the detection conveyor belt (13).

8. The intelligent machining system for the outer circle of a steel pipe according to claim 7, characterized in that, Further comprising a steel pipe feeding station (8), which is arranged on the side of the weighing conveyor (12) away from the second grinding conveyor (23); the steel pipe feeding station (8) comprises a plurality of feeding racks (81) arranged in parallel and spaced apart along the conveying direction of the weighing conveyor (12), and each adjacent feeding rack (81) has a feeding rack separation channel (82); Each linear slide rail corresponds to a feeding rack separation channel (82), and the end of any linear slide rail away from the second grinding conveyor (23) extends into the corresponding feeding rack separation channel (82), so that the transport table can transfer the steel pipes (6) to be processed on the steel pipe feeding station (8) to the weighing conveyor (12); or, a steel pipe transfer mechanism three (5) is further arranged between the steel pipe feeding station (8) and the weighing conveyor (12), the structure of the steel pipe transfer mechanism three (5) is the same as that of the steel pipe transfer mechanism two (4), and any linear slide rail of the steel pipe transfer mechanism three (5) is arranged below the weighing conveyor (12) and extends into the corresponding feeding rack separation channel (82).

9. The intelligent machining system for the outer circle of a steel pipe according to claim 3 or 4, characterized in that, Further comprising: A limit switch one (91) arranged on the second grinding conveyor (23) and located at one end of the second grinding conveyor (23) close to the discharge end of the outer circle grinding unit; A limit switch two (92) arranged on the second grinding conveyor (23) and located at one end of the second grinding conveyor (23) away from the discharge end of the outer circle grinding unit; A limit switch three (93) arranged on the detection conveyor (13) and located at the conveying end of the detection conveyor (13).

10. A steel pipe outer circle intelligent machining method, implemented based on the steel pipe outer circle intelligent machining system (100) of claim 3, 4 or 9, characterized in that, Comprising: Step 1: input the batch information of the steel pipes (6) to be processed into the feedback control system, and start the detection conveyor (13) and the weighing conveyor (12) at the same time; Step 2: carry the steel pipes (6) to the weighing conveyor (12); while conveying the steel pipes (6) through the weighing conveyor (12), measure the weight of the steel pipes (6); Step 3: during the conveying of the steel pipes (6) into the detection conveyor (13), detect the quality parameters of the steel pipes (6) through the detection assembly, and determine whether the measured quality parameters meet the target parameters; if the measured quality parameters are determined not to meet the target parameters, the steel pipes (6) are unqualified, step 4 is executed, and if the measured quality parameters are determined to meet the target parameters, the steel pipes (6) are qualified, step 5 is executed; Step 4: the unqualified steel pipes (6) are returned to the steel pipe feeding station (8) through the transport table, and the batch information of the unqualified steel pipes (6) is updated in the feedback control system; Step 5: the qualified steel pipes (6) are conveyed to the outer circle grinding unit (21) through the transport table, and the batch information of the qualified steel pipes (6) is updated in the feedback control system. Step 4: According to the measured quality parameters, the process parameters of the external machining unit (21) are adjusted, and the steel pipes (6) on the detection conveying belt (13) are transferred to the grinding conveying belt I (22) by the steel pipe transfer mechanism I (3), the steel pipes (6) are conveyed to the external machining unit (21) by the grinding conveying belt I (22) for external machining, then the finished steel pipes (6) on the external machining unit (21) are received and conveyed by the grinding conveying belt II (23), and steps 2-3 are executed to detect the quality parameters of the steel pipes (6) again; Step 5: The qualified steel pipes (6) are transferred from the detection conveying belt (13) for discharging.

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