A steel pipe threading apparatus

Abstract

The application discloses a steel pipe thread processing equipment and belongs to the technical field of steel pipe thread processing, which comprises an automatic machine tool, a tapping drill bit is sleeved in the tapping tool shank of the automatic machine tool, a base is connected below the automatic machine tool corresponding to the tapping drill bit, a sliding groove is formed in the side end face of the base, and an automatic feeding assembly is slidably connected in the sliding groove. In the application, pretreatment and chip removal control are performed, the piston disc is synchronously triggered to enter the steel pipe when the tapping drill bit goes down, the first plugging assembly is turned over to compress the switching spring to form a negative pressure environment, air is discharged through the exhaust hole to inhibit the accumulation of iron chips, the risk of thermal deformation is reduced, tapping and reverse polishing are performed, the tapping drill bit is reversely rotated to go up after tapping is completed, the polishing roller is reversely rotated by utilizing inertia driving, thread burrs are removed and the surface roughness is optimized by micro-cutting, chip removal and environmental protection recovery are performed, the exhaust hole is closed and the second plugging assembly is opened when the piston disc is reset, directional airflow is formed to suck the metal chips into the steel pipe, and dust closed-loop recovery is realized.

Description

Technical Field

[0001] This invention belongs to the field of steel pipe thread processing technology, and particularly relates to a steel pipe thread processing equipment. Background Technology

[0002] Steel pipes are currently used in various fields, serving as support components and fluid transport components. In particular, when steel pipes are used in fluid transport, multiple steel pipes need to be sealed together. Therefore, in order to ensure the sealing of the contact and the connection strength, the ends of the steel pipes need to be threaded.

[0003] Existing technologies disclose several invention patents in the field of steel pipe thread processing. Among them, invention patent CN118650220B discloses a steel pipe thread processing equipment. This equipment employs a modular design for easy disassembly, allowing the device to be installed in a designated position according to the user's needs. Using multiple adjustable-pitch cutters, it can process the steel pipe thread to a set size in a single cut, thus improving thread processing efficiency. It uses at least three cutters, each independently controllable, so even if a cutter is damaged, it can still perform normal thread processing. However, this technical solution still has some shortcomings. The process involves processing at the thread processing station, turning the pipe out for thread inspection, and finally transferring it to a grinding equipment for grinding. The entire process is sequential, involving many steps, consuming a long time, and resulting in low grinding efficiency. The grinding speed cannot keep up with the threading rhythm of the previous station, affecting production efficiency.

[0004] Based on this, the present invention designs a steel pipe thread processing equipment to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to address the problems of existing steel pipe thread processing equipment, which involves processing at the thread processing position, turning out the pipe for thread inspection, and finally transferring it to the grinding equipment for grinding. The entire process is sequential, involves many steps, is time-consuming, has low grinding efficiency, and the grinding speed cannot keep up with the threading rhythm of the pipe end at the previous station, thus affecting production efficiency. Therefore, this invention proposes a steel pipe thread processing equipment.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A steel pipe thread processing equipment includes an automatic machine tool. A tapping drill bit is installed inside the tapping tool holder of the automatic machine tool. A base is connected to the automatic machine tool below the tapping drill bit. A sliding groove is opened on the side end face of the base. An automatic feeding component is slidably connected in the sliding groove. The automatic feeding component is combined with the tapping drill bit to perform tapping processing on multiple steel pipes.

[0008] The automatic feeding assembly has multiple clamping components embedded inside to clamp and fix the steel pipe. The bottom end of the tapping drill bit has a combination groove corresponding to the inner side of the clamping components. A grinding component is fitted inside the combination groove to grind the thread surface using the residual torque of the automatic machine tool.

[0009] As a further description of the above technical solution:

[0010] The automatic feeding assembly includes a sliding frame slidably connected in a slide groove, a first toothed plate connected to the inner side of the sliding frame, a motor installed on the automatic machine tool corresponding to the first toothed plate, and a gear meshing with the first toothed plate is fitted on the output shaft of the motor.

[0011] The top of the sliding frame has multiple insertion slots, and the same feeding component is inserted into each of the multiple insertion slots.

[0012] As a further description of the above technical solution:

[0013] The feeding component includes multiple first magnetic pads, which are respectively snapped into the bottom of multiple insertion slots. The top of each of the multiple first magnetic pads is magnetically attracted to a second magnetic pad. Insertion rods are inserted into each of the multiple insertion slots. The ends of the multiple insertion rods are respectively connected to the multiple second magnetic pads. The other ends of the multiple insertion rods are connected to the same feeding plate. The top of the feeding plate is connected to a feeding frame. The top of the feeding frame has multiple feeding slots corresponding to the tapping drill bit.

[0014] As a further description of the above technical solution:

[0015] The inner wall of the feeding trough is provided with a plurality of first transition grooves. The clamping assembly is rotatably connected to the plurality of first transition grooves. The clamping assembly includes an inner cylinder located inside the feeding trough. The inner cylinder is connected to the top of the feeding frame. An outer cylinder is sleeved inside the feeding trough corresponding to the outer periphery of the inner cylinder. The outer wall of the outer cylinder is connected to a movable block corresponding to the plurality of first transition grooves. The movable block is rotatably connected to the first transition groove. A fixed block is engaged in the first transition groove. An arc-shaped spring is connected between the fixed block and the movable block.

[0016] As a further description of the above technical solution:

[0017] The inner cylinder is connected to a plurality of clamping plates arranged in a ring array. The inner sidewall of the clamping plates is connected to an anti-slip pad. The outer wall of the inner cylinder is provided with a plurality of adjustment holes corresponding to a single clamping plate. A first adapter is sleeved in the adjustment hole. The end of the first adapter is connected to the outer sidewall of the clamping plate. An adjustment rod is rotatably connected to the inner side of the first adapter. The other end of the adjustment rod is rotatably connected to a second adapter. The other end of the second adapter is connected to the inner sidewall of the outer cylinder.

[0018] As a further description of the above technical solution:

[0019] The top of the feeding rack has an exhaust hole corresponding to the inner side of the inner cylinder. The top of the feeding rack is connected to the exhaust hole and a first sealing assembly. The first sealing assembly includes a sealing cover connected to the position of the exhaust hole on the top of the feeding rack. The inner side of the protrusion of the sealing cover is engaged with a transfer shaft. A transfer frame is rotatably connected to the transfer shaft. The transfer frame is connected to the top of the feeding rack. A transfer spring is sleeved on the transfer shaft. The transfer frame is elastically connected to the transfer shaft through the transfer spring.

[0020] As a further description of the above technical solution:

[0021] The side end face of the feeding rack is provided with a tensioning groove, and a tensioning component is embedded in the tensioning groove. The tensioning component includes multiple toothed rings, which are respectively fitted onto multiple outer cylinders. The inner wall of the feeding groove is provided with a second transition groove corresponding to the toothed rings. The toothed rings are rotatably connected in the second transition groove. The tensioning groove is connected to multiple feeding grooves. A second toothed plate is slidably connected in the tensioning groove. The end of the second toothed plate is provided with a threaded groove. A threaded rod is threadedly connected in the threaded groove. The end of the threaded rod is rotatably connected to the feeding rack.

[0022] As a further description of the above technical solution:

[0023] The grinding assembly includes a third magnetic pad that is snapped into the top of the combination groove, a fourth magnetic pad that is magnetically attracted to the bottom of the third magnetic pad, a grinding shaft that is connected to the bottom of the fourth magnetic pad, a piston disc that is rotatably connected to the other end of the grinding shaft, and a grinding roller for grinding the threaded surface of the steel pipe that is fitted on the grinding shaft.

[0024] As a further description of the above technical solution:

[0025] The piston disc has multiple drain holes at its bottom, and a second sealing component is connected to each drain hole at the bottom of the piston disc. The second sealing component has the same structure as the first sealing component.

[0026] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0027] 1. In this invention, pretreatment and chip removal control are performed as follows: When the tapping drill bit descends, the piston disc is simultaneously triggered to enter the steel pipe. The first sealing component flips and compresses the adapter spring to create a negative pressure environment. Air is discharged through the exhaust hole to suppress the accumulation of iron chips and reduce the risk of thermal deformation. After tapping, the tapping drill bit rotates in the opposite direction and moves upward. The grinding roller is driven to rotate in the opposite direction by inertia. Thread burrs are eliminated and surface roughness is optimized through micro-cutting. Chip removal and environmental recycling are also performed. When the piston disc resets, the exhaust hole is closed and the second sealing component is opened to form a directional airflow that sucks metal chips into the steel pipe, realizing closed-loop dust recycling and effectively reducing the dust concentration in the workshop.

[0028] 2. In this invention, a magnetic quick clamping system is used. The insertion slot on the sliding frame is pre-embedded with a first magnetic pad. The feeding plate is vertically inserted through the insertion rod. The magnetic attraction achieves rapid positioning and multi-point fixation, simplifying the loading and unloading process and ensuring transportation stability. Automatic feeding and precise positioning are achieved. The motor drives the gear to move laterally along the first toothed plate, driving the sliding frame to slide along the guide rail. Step positioning is achieved through encoder feedback, so that the steel pipe to be processed is automatically aligned directly below the tapping drill bit. Cyclic processing and efficiency are improved. After the tapping drill bit completes a single tap, it is lifted. The motor drives the sliding frame to move intermittently according to the preset step distance, realizing the automatic feeding-positioning-processing cycle of the steel pipe. Non-processing time is shortened and thread processing efficiency is improved.

[0029] 3. In this invention, the thrust is transmitted to the clamping plate through the first adapter. Under the action of the thrust, multiple clamping plates converge towards the center synchronously until they are tightly attached to and fixed to the steel pipe. The anti-slip pads on the inner side of the clamping plate significantly improve the stability of the steel pipe after clamping by increasing the friction of the contact surface. This design drives multiple clamping mechanisms to work together through a single threaded rod, which can simultaneously complete the synchronous clamping and fixing of multiple steel pipes, effectively improving processing efficiency and ease of operation. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of a steel pipe thread processing equipment proposed in this invention;

[0031] Figure 2 This is a schematic diagram of the structure of a steel pipe thread processing device proposed in this invention from another perspective;

[0032] Figure 3 This is a schematic diagram of the grinding component in a steel pipe thread processing equipment proposed in this invention;

[0033] Figure 4 This is a schematic diagram of the grinding component in a steel pipe thread processing equipment proposed in this invention, viewed from another perspective after disassembly.

[0034] Figure 5 This invention proposes a steel pipe thread processing device. Figure 4 Schematic diagram of the grinding component;

[0035] Figure 6 This is a structural diagram of the disassembled automatic feeding component in a steel pipe threading equipment proposed in this invention;

[0036] Figure 7 This is a structural schematic diagram of the automatic feeding component in a steel pipe thread processing equipment proposed in this invention, viewed from another perspective after disassembly.

[0037] Figure 8 This is a schematic diagram of the disassembled clamping assembly in a steel pipe threading equipment proposed in this invention;

[0038] Figure 9 This is a schematic diagram of the structure of the first sealing component in a steel pipe thread processing equipment proposed in this invention.

[0039] Legend:

[0040] 1. Automatic machine tool; 2. Base; 3. Slide rail; 4. Automatic feeding assembly; 401. Sliding frame; 402. First gear plate; 403. Gear; 404. Motor; 405. Insertion slot; 406. Feeding component; 4061. First magnetic pad; 4062. Second magnetic pad; 4063. Insertion rod; 4064. Feeding plate; 4065. Feeding groove; 4066. Feeding frame; 5. First transfer groove; 6. Clamping assembly; 601. Inner cylinder; 602. Outer cylinder; 603. Movable block; 604. Fixed block; 605. Arc spring; 606. Adjustment hole; 607. 608. Clamping plate; 609. Anti-slip pad; 610. First adapter; 611. Adjusting rod; 612. Second adapter; 7. First sealing assembly; 701. Sealing cover; 702. Adapter shaft; 703. Adapter frame; 704. Adapter spring; 8. Tightening assembly; 801. Gear ring; 802. Second gear plate; 803. Threaded rod; 9. Tightening groove; 10. Tapping drill bit; 11. Combination groove; 12. Grinding assembly; 121. Third magnetic pad; 122. Fourth magnetic pad; 123. Grinding shaft; 124. Piston disc; 125. Grinding roller; 13. Second sealing assembly. Detailed Implementation

[0041] 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.

[0042] Please see the appendix Figure 1 - Appendix Figure 9 The present invention provides a technical solution: a steel pipe thread processing equipment, including an automatic machine tool 1, a tapping drill bit 10 is installed inside the tapping tool holder of the automatic machine tool 1, a base 2 is connected to the automatic machine tool 1 below the tapping drill bit 10, a sliding groove 3 is opened on the side end face of the base 2, an automatic feeding component 4 is slidably connected in the sliding groove 3, and the automatic feeding component 4 is combined with the tapping drill bit 10 to perform tapping processing on multiple steel pipes;

[0043] Multiple clamping components 6 are embedded inside the automatic feeding component 4 to clamp and fix the steel pipe. The bottom end of the tapping drill bit 10 is provided with a combination groove 11 corresponding to the inner side of the clamping component 6. A grinding component 12 is fitted inside the combination groove 11 to grind the thread surface using the remaining torque of the automatic machine tool 1.

[0044] Specifically, the automatic feeding component 4 includes a sliding frame 401 slidably connected in the slide groove 3, a first toothed plate 402 connected to the inner side of the sliding frame 401, a motor 404 installed on the automatic machine tool 1 corresponding to the first toothed plate 402, and a gear 403 meshing with the first toothed plate 402 is mounted on the output shaft of the motor 404.

[0045] The top of the sliding frame 401 is provided with multiple insertion slots 405. The same feeding component 406 is inserted into the multiple insertion slots 405. The feeding component 406 includes multiple first magnetic pads 4061. The multiple first magnetic pads 4061 are respectively snapped into the bottom of the multiple insertion slots 405. The top of each of the multiple first magnetic pads 4061 is magnetically attracted to a second magnetic pad 4062. Insertion rods 4063 are inserted into the multiple insertion slots 405. The ends of the multiple insertion rods 4063 are respectively connected to the multiple second magnetic pads 4062. The other ends of the multiple insertion rods 4063 are connected to the same feeding plate 4064. The top of the feeding plate 4064 is connected to a feeding rack 4066. The top of the feeding rack 4066 is provided with multiple feeding slots 4065 corresponding to the tapping drill bit 10.

[0046] The specific implementation method is as follows: The operator inserts the multiple steel pipes to be processed one by one into the corresponding inner cylinder 601. Then, the operator uses a wrench to rotate the threaded rod 803. Since the end of the threaded rod 803 is connected to the feeding rack 4066 by a rotating structure, when the threaded rod 803 rotates in the thread groove, it will drive the second toothed plate 802 to produce linear displacement along the tension groove 9. Thanks to the meshing design between the second toothed plate 802 and multiple toothed rings 801, its sliding process will synchronously drive all toothed rings 801 to rotate. When the toothed rings 801 rotate, they drive the moving block 603 to rotate. The outer cylinder 602 rotates within the first adapter groove 5, causing relative motion between the outer cylinder 602 and the inner cylinder 601. The rotation of the outer cylinder 602 synchronously drives multiple second adapters 611 to rotate. The second adapters 611 apply a thrust to one end of the adjusting rod 610, causing the adjusting rod 610 to rotate around the second adapter 611 as a fulcrum. The other end of the rod rotates inside the first adapter 609, and the thrust is transmitted to the clamping plate 607 through the first adapter 609. Under the action of the thrust, multiple clamping plates 607 synchronously converge toward the center until they are tightly attached to and fix the steel pipe.

[0047] Specifically, the inner wall of the feeding trough 4065 is provided with multiple first transition grooves 5. The clamping assembly 6 is rotatably connected to the multiple first transition grooves 5. The clamping assembly 6 includes an inner cylinder 601 located inside the feeding trough 4065. The inner cylinder 601 is connected to the top of the feeding rack 4066. An outer cylinder 602 is sleeved around the inner cylinder 601 inside the feeding trough 4065. The outer wall of the outer cylinder 602 is connected to each of the multiple first transition grooves 5 with a movable block 603. The movable block 603 is rotatably connected to the first transition groove 5. A fixed block 604 is engaged in the first transition groove 5. The fixed block 604 and the movable block 603 are connected... An arc-shaped spring 605 is connected to the inner cylinder 601. Multiple clamping plates 607 arranged in a circular array are connected to the inner side of the inner cylinder 601. Anti-slip pads 608 are connected to the inner walls of the clamping plates 607. Multiple adjustment holes 606 are opened on the outer wall of the inner cylinder 601 corresponding to each clamping plate 607. A first adapter 609 is fitted inside each adjustment hole 606. One end of the first adapter 609 is connected to the outer wall of the clamping plate 607. An adjustment rod 610 is rotatably connected to the inner side of the first adapter 609. The other end of the adjustment rod 610 is rotatably connected to a second adapter 611. The other end of the second adapter 611 is connected to the inner wall of the outer cylinder 602. The top of the loading rack 4066 has an exhaust hole corresponding to the inner side of the inner cylinder 601. A first sealing assembly 7 is connected to the exhaust hole on the inner top of the loading rack 4066. The first sealing assembly 7 includes a sealing cover 701 connected to the position of the exhaust hole on the inner top of the loading rack 4066. A connecting shaft 702 is engaged with the inner side of the protrusion of the sealing cover 701. A connecting frame 703 is rotatably connected to the connecting shaft 702. The connecting frame 703 is connected to the inner top of the loading rack 4066. A connecting spring 704 is sleeved on the connecting shaft 702. The connecting frame 703 is elastically connected to the connecting shaft 702 through the connecting spring 704. The side end face of 4066 is provided with a tensioning groove 9, and a tensioning component 8 is embedded in the tensioning groove 9. The tensioning component 8 includes multiple toothed rings 801, which are respectively fitted onto multiple outer cylinders 602. The inner wall of the feeding groove 4065 is provided with a second transition groove corresponding to the toothed rings 801. The toothed rings 801 are rotatably connected in the second transition groove. The tensioning groove 9 is connected to the multiple feeding grooves 4065. A second toothed plate 802 is slidably connected in the tensioning groove 9. A threaded groove is provided at the end of the second toothed plate 802. A threaded rod 803 is threadedly connected in the threaded groove. The end of the threaded rod 803 is rotatably connected to the feeding frame 4066.

[0048] The specific implementation method is as follows: In the initial assembly stage, multiple first magnetic pads 4061 are pre-embedded in the bottom of the insertion slots 405 of the sliding frame 401. The operator places the loading plate 4064, which holds multiple steel pipes to be processed, stably on the sliding frame 401. Multiple insertion rods 4063 at the bottom of the loading plate 4064 are simultaneously inserted into the corresponding insertion slots 405. The second magnetic pads 4062 connected to the bottom of the insertion rods 4063 are tightly attached to the first magnetic pads 4061 through magnetic attraction, realizing the rapid positioning and stable connection between the loading plate 4064 and the sliding frame 401. This magnetic combination design not only simplifies the loading and unloading process of steel pipes, but also ensures the stability of the steel pipes during transportation through multi-point magnetic fixation. Stability during processing lays the foundation for efficient subsequent processing. In the automatic feeding stage, the start motor 404 drives the gear 403 to rotate along the tooth surface of the first tooth plate 402. The first tooth plate 402 drives the sliding frame 401 to move laterally along the sliding groove through mechanical linkage. When the sliding frame 401 moves to the preset position, the steel pipe to be processed on the far right is precisely positioned directly below the tapping drill bit 10. At this time, the automatic machine tool 1 controls the tapping drill bit 10 to press down vertically and complete the tapping of the steel pipe. Then, the drill bit is quickly lifted to detach from the workpiece. In the cyclic processing stage, the motor 404 runs continuously, driving the sliding frame 401 to move intermittently at a preset step distance, so that the steel pipes to be processed enter the tapping station in sequence.

[0049] Specifically, the grinding assembly 12 includes a third magnetic pad 121 snapped into the top of the combination groove 11, a fourth magnetic pad 122 magnetically attracted to the bottom of the third magnetic pad 121, a grinding shaft 123 connected to the bottom of the fourth magnetic pad 122, a piston disc 124 rotatably connected to the other end of the grinding shaft 123, a grinding roller 125 for grinding the threaded surface of the steel pipe fitted on the grinding shaft 123, a plurality of drain holes opened at the bottom of the piston disc 124, and a second sealing assembly 13 connected to each of the plurality of drain holes at the bottom of the piston disc 124, the second sealing assembly 13 having the same structure as the first sealing assembly 7.

[0050] The specific implementation method is as follows: In the pre-treatment and chip removal control stage of tapping, the automatic machine tool 1 drives the tapping drill bit 10 to descend vertically, and simultaneously triggers the piston disc 124 to enter the steel pipe to be processed. During the downward movement of the piston disc 124, the sealing cover 701 of the first sealing component 7 flips inside the adapter frame 703 via the adapter shaft 702, compressing the adapter spring 704 to form an elastic potential energy reserve. At this time, the air below the piston disc 124 in the steel pipe is discharged through the exhaust hole, forming a dynamic negative pressure environment, which effectively inhibits the accumulation of iron chips and reduces the risk of thermal deformation during processing. In the tapping and reverse grinding stage, after the tapping drill bit 10 completes the thread processing, the machine tool controls the drill bit to rotate upward in the reverse direction. The moment the thread breaks off, the machine tool stops outputting torque. The tapping drill bit 10 continues to rotate under inertia. Through the rigid connection between the grinding shaft 123 and the tapping drill bit 10, the grinding roller 125 starts to rotate in the opposite direction. Its spiral groove direction is opposite to the thread direction. This design eliminates thread burrs through micro-cutting action and optimizes the surface roughness of the thread. During the chip removal and environmental recycling stage, during the upward reset of the piston disc 124, the sealing cover 701 of the first sealing component 7 automatically closes the exhaust hole under the restoring force of the transition spring 704, and simultaneously triggers the opening of the sealing cover 701 of the second sealing component 13. External air forms a directional airflow through the steel pipe opening.

[0051] Working principle and usage:

[0052] The operator inserts the multiple steel pipes to be processed one by one into the corresponding inner cylinder 601. Then, using a wrench, the threaded rod 803 is rotated. Since the end of the threaded rod 803 is connected to the feeding rack 4066 by a rotating structure, when the threaded rod 803 rotates in the thread groove, it drives the second toothed plate 802 to produce linear displacement along the tensioning groove 9. Thanks to the meshing design of the second toothed plate 802 and multiple toothed rings 801, its sliding process will synchronously drive all toothed rings 801 to rotate. When the toothed rings 801 rotate, they drive the outer cylinder 602 to rotate in the first transition groove 5 through the movable block 603, so that the outer cylinder 602 and the inner cylinder 601 form relative motion. The rotation of the outer cylinder 602 synchronously drives multiple second transition joints. When 611 rotates, the second adapter 611 applies a thrust to one end of the adjusting rod 610, causing the adjusting rod 610 to rotate around the second adapter 611 as a fulcrum. The other end of the rod rotates inside the first adapter 609, and the thrust is transmitted to the clamping plate 607 through the first adapter 609. Under the action of the thrust, multiple clamping plates 607 converge towards the center synchronously until they are tightly attached to and fix the steel pipe. The anti-slip pad 608 set on the inner side of the clamping plate 607 increases the friction of the contact surface, which significantly improves the stability of the steel pipe after clamping. This design drives multiple clamping mechanisms to work together through a single threaded rod 803, which can simultaneously complete the synchronous clamping and fixing of multiple steel pipes, effectively improving processing efficiency and ease of operation.

[0053] In the initial assembly stage, multiple first magnetic pads 4061 are pre-embedded in the bottom of the insertion slots 405 of the sliding frame 401. The operator places the loading plate 4064, which holds multiple steel pipes to be processed, stably on the sliding frame 401. Multiple insertion rods 4063 at the bottom of the loading plate 4064 are simultaneously inserted into the corresponding insertion slots 405. The second magnetic pads 4062 connected to the bottom of the insertion rods 4063 are tightly attached to the first magnetic pads 4061 through magnetic attraction, realizing the rapid positioning and stable connection between the loading plate 4064 and the sliding frame 401. This magnetic combination design not only simplifies the loading and unloading process of steel pipes, but also ensures the stability of steel pipes during transportation and processing through multi-point magnetic fixation, laying the foundation for subsequent efficient processing. In the automatic feeding stage, the motor 404 is started to drive the gears. Wheel 403 rotates along the tooth surface of the first toothed plate 402. The first toothed plate 402 drives the sliding frame 401 to move laterally along the sliding groove through mechanical linkage. When the sliding frame 401 moves to the preset position, the steel pipe to be processed on the far right is precisely positioned directly below the tapping drill bit 10. At this time, the automatic machine tool 1 controls the tapping drill bit 10 to press down vertically and complete the tapping of the steel pipe. Then, the drill bit is quickly lifted to detach from the workpiece. During the cyclic processing stage, the motor 404 runs continuously, driving the sliding frame 401 to move intermittently at a preset step distance, so that the steel pipes to be processed enter the tapping station in sequence. Through the coordinated action of gear 403 rack and pinion transmission and magnetic positioning, the system realizes automatic feeding, precise positioning and continuous processing of steel pipes, effectively shortening non-processing time and significantly improving the overall efficiency of thread processing.

[0054] In the pre-tapping and chip removal control stage, the automatic machine tool 1 drives the tapping drill bit 10 to descend vertically, simultaneously triggering the piston disc 124 to enter the steel pipe to be processed. During the descent of the piston disc 124, the sealing cover 701 of the first sealing component 7 flips inside the adapter frame 703 via the adapter shaft 702, compressing the adapter spring 704 to form an elastic potential energy reserve. At this time, the air below the piston disc 124 inside the steel pipe is discharged through the exhaust hole, forming a dynamic negative pressure environment, effectively suppressing the accumulation of iron chips and reducing the risk of thermal deformation during processing. In the tapping and reverse grinding stage, after the tapping drill bit 10 completes the thread processing, the machine tool controls the drill bit to rotate in the opposite direction and move upward. The moment it leaves the threaded surface, the machine tool stops the torque output, and the tapping drill bit 10 moves upward in the inertial direction. Under the action of the action, the grinding roller 125 rotates continuously. Through the rigid connection between the grinding shaft 123 and the tapping drill bit 10, the grinding roller 125 starts to rotate in the opposite direction. Its spiral groove direction is opposite to the thread direction. This design eliminates thread burrs through micro-cutting action and optimizes the surface roughness of the thread. In the chip removal and environmental recycling stage, during the upward reset of the piston disc 124, the sealing cover 701 of the first sealing component 7 automatically closes the exhaust hole under the restoring force of the transfer spring 704, and simultaneously triggers the opening of the sealing cover 701 of the second sealing component 13. The external air forms a directional airflow through the steel pipe opening, which sucks the metal chips generated by grinding into the steel pipe. This closed-loop chip removal system can reduce the emission of processing dust and significantly improve the air quality in the workshop.

[0055] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A steel pipe thread processing equipment, comprising an automatic machine tool (1), characterized in that, The tapping tool holder of the automatic machine tool (1) is fitted with a tapping drill bit (10). A base (2) is connected to the bottom of the tapping drill bit (10) on the automatic machine tool (1). A sliding groove (3) is opened on the side end face of the base (2). An automatic feeding component (4) is slidably connected in the sliding groove (3). The automatic feeding component (4) is combined with the tapping drill bit (10) to tap multiple steel pipes. The automatic feeding component (4) is equipped with multiple clamping components (6) for clamping and fixing steel pipes. The bottom end of the tapping drill bit (10) is provided with a combination groove (11) corresponding to the inner side of the clamping component (6). A grinding component (12) is fitted inside the combination groove (11) to grind the thread surface using the remaining torque of the automatic machine tool (1). The automatic feeding assembly (4) includes a sliding frame (401) slidably connected in the slide groove (3), a first toothed plate (402) is connected to the inner side of the sliding frame (401), a motor (404) is installed on the automatic machine tool (1) corresponding to the first toothed plate (402), and a gear (403) that meshes with the first toothed plate (402) is fitted on the output shaft of the motor (404). The top of the sliding frame (401) is provided with multiple insertion slots (405), and the same feeding component (406) is inserted into the multiple insertion slots (405). The feeding component (406) includes multiple first magnetic pads (4061), which are respectively snapped into the bottom of multiple insertion slots (405). The top of each of the multiple first magnetic pads (4061) is magnetically attracted to a second magnetic pad (4062). Insertion rods (4063) are inserted into each of the multiple insertion slots (405). The ends of the multiple insertion rods (4063) are respectively connected to the multiple second magnetic pads (4062). The other ends of the multiple insertion rods (4063) are connected to the same feeding plate (4064). The top of the feeding plate (4064) is connected to a feeding rack (4066). The top of the feeding rack (4066) is provided with multiple feeding slots (4065) corresponding to the tapping drill bit (10). The top of the feeding rack (4066) is provided with an exhaust hole corresponding to the inner side of the inner cylinder (601). The top of the feeding rack (4066) is connected to the exhaust hole and a first sealing assembly (7). The first sealing assembly (7) includes a sealing cover (701) connected to the position of the exhaust hole on the top of the feeding rack (4066). The inner side of the protrusion of the sealing cover (701) is snapped with a connecting shaft (702). A connecting frame (703) is rotatably connected to the connecting shaft (702). The connecting frame (703) is connected to the top of the feeding rack (4066). A connecting spring (704) is sleeved on the connecting shaft (702). The connecting frame (703) is elastically connected to the connecting shaft (702) through the connecting spring (704). The grinding assembly (12) includes a third magnetic pad (121) snapped into the top of the combination groove (11), a fourth magnetic pad (122) magnetically attracted to the bottom of the third magnetic pad (121), a grinding shaft (123) connected to the bottom of the fourth magnetic pad (122), a piston disc (124) rotatably connected to the other end of the grinding shaft (123), and a grinding roller (125) for grinding the threaded surface of the steel pipe fitted on the grinding shaft (123). The bottom of the piston disc (124) is provided with multiple drain holes, and the bottom of the piston disc (124) is connected to the multiple drain holes with a second sealing component (13). The second sealing component (13) has the same structure as the first sealing component (7).

2. The steel pipe thread processing equipment according to claim 1, characterized in that, The inner wall of the feeding trough (4065) is provided with a plurality of first transition grooves (5). The clamping assembly (6) is rotatably connected to the plurality of first transition grooves (5). The clamping assembly (6) includes an inner cylinder (601) located inside the feeding trough (4065). The inner cylinder (601) is connected to the top of the feeding rack (4066). An outer cylinder (602) is sleeved around the inner cylinder (601) inside the feeding trough (4065). The outer wall of the outer cylinder (602) is connected to a movable block (603) corresponding to the plurality of first transition grooves (5). The movable block (603) is rotatably connected to the first transition groove (5). A fixed block (604) is snapped into the first transition groove (5). An arc spring (605) is connected between the fixed block (604) and the movable block (603).

3. The steel pipe thread processing equipment according to claim 2, characterized in that, The inner cylinder (601) is connected to a plurality of clamping plates (607) arranged in a ring array. The inner sidewall of the clamping plate (607) is connected to an anti-slip pad (608). The outer wall of the inner cylinder (601) is provided with a plurality of adjustment holes (606) corresponding to a single clamping plate (607). A first adapter (609) is sleeved in the adjustment hole (606). The end of the first adapter (609) is connected to the outer sidewall of the clamping plate (607). An adjustment rod (610) is rotatably connected to the inner side of the first adapter (609). The other end of the adjustment rod (610) is rotatably connected to a second adapter (611). The other end of the second adapter (611) is connected to the inner sidewall of the outer cylinder (602).

4. The steel pipe thread processing equipment according to claim 3, characterized in that, The side end face of the feeding rack (4066) is provided with a tensioning groove (9), and a tensioning component (8) is embedded in the tensioning groove (9). The tensioning component (8) includes multiple toothed rings (801), which are respectively fitted onto multiple outer cylinders (602). The inner wall of the feeding groove (4065) is provided with a second transition groove corresponding to the toothed rings (801). The toothed rings (801) are rotatably connected in the second transition groove. The tensioning groove (9) is connected to multiple feeding grooves (4065). A second toothed plate (802) is slidably connected in the tensioning groove (9). A threaded groove is provided at the end of the second toothed plate (802). A threaded rod (803) is threadedly connected in the threaded groove. The end of the threaded rod (803) is rotatably connected to the feeding rack (4066).

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