Steel pipe thread machining equipment

Abstract

The invention belongs to the technical field of steel pipe thread machining and discloses steel pipe thread machining equipment which comprises an automatic machine tool, a tapping drill bit is sleeved with a tapping cutter handle of the automatic machine tool, a base is connected to the portion, corresponding to the lower portion of the tapping drill bit, of the automatic machine tool, and a sliding groove is formed in the side end face of the base. According to the automatic tapping machine, pretreatment and chip removal control are conducted, when a tapping drill bit descends, a piston disc is synchronously triggered to enter a steel pipe, a first blocking assembly overturns and compresses an adapter spring to form a negative pressure environment, air is exhausted through an exhaust hole to restrain scrap iron accumulation, the thermal deformation risk is reduced, tapping and reverse grinding are conducted, and the machining efficiency is improved. And after tapping is completed, the tapping drill bit reversely rotates and ascends, the polishing roller is driven by inertia to reversely rotate, thread burrs are eliminated through micro cutting, the surface roughness is optimized, chip removal and environment-friendly recovery are achieved, when the piston disc resets, the exhaust hole is closed, the second plugging assembly is started, directional airflow is formed to suck metal chips into the steel pipe, and closed-loop dust recovery is achieved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of steel pipe thread processing, and particularly relates to a steel pipe thread processing equipment. BACKGROUND

[0002] Steel pipes are currently applied in various fields and can be used as supporting components and fluid conveying components, and in particular, steel pipes are applied in the field of fluid conveying, and a plurality of steel pipes need to be sealed and butt-jointed, so that in order to ensure the sealing property and the connecting strength of butt joints, thread cutting needs to be performed on the end of the steel pipe.

[0003] In the prior art, some invention patents in the technical field of steel pipe thread processing are disclosed, and the invention patent with the publication number CN118650220B discloses a steel pipe thread processing equipment, relates to the technical field of steel pipe thread processing, adopts a modular design convenient to disassemble, can be installed at a specified position according to the needs of a user, and through a plurality of adjustable-distance cutters, the thread of the steel pipe can be processed to a set size through one-time cutting, so that the processing efficiency of the thread is improved, at least three cutters are adopted, and each cutter can be independently controlled, so that when a cutter is damaged, normal thread processing capacity can still be provided. However, the technical scheme still has some deficiencies in the process of use. In the thread processing position, processing is performed, thread inspection is performed after turning out, and finally, the steel pipe is transported to a polishing device for polishing. The whole process is sequentially performed, the process is multiple, time-consuming is long, the grinding efficiency is low, the grinding speed cannot keep up with the pace of thread tapping at the previous work station, and the production efficiency is affected.

[0004] Based on this, the application designs a steel pipe thread processing equipment to solve the above problems. SUMMARY

[0005] The application aims to solve the problems of the existing steel pipe thread processing equipment, that is, the steel pipe thread processing equipment performs processing in the thread processing position, performs thread inspection after turning out, and finally transports the steel pipe to a polishing device for polishing. The whole process is sequentially performed, the process is multiple, time-consuming is long, the grinding efficiency is low, the grinding speed cannot keep up with the pace of thread tapping at the previous work station, and the production efficiency is affected. A steel pipe thread processing equipment is provided.

[0006] In order to achieve the above-mentioned purpose, the application adopts the following technical scheme: A steel pipe thread processing equipment, comprising an automatic machine tool, a tapping drill bit is sleeved in a 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. The automatic feeding assembly is combined with the tapping drill bit to tap a plurality of steel pipes. The inner side of the automatic feeding assembly is embedded with a plurality of clamping assemblies for clamping and fixing steel pipes, a combined groove is formed in the inner side of the tapping drill bit corresponding to the clamping assembly, a polishing assembly is sleeved in the combined groove, and the thread surface is polished by using the remaining torsion of the automatic machine tool.

[0007] As a further description of the above technical solution: The automatic feeding assembly comprises a sliding frame slidingly connected in the sliding groove, a first toothed plate connected on the inner side of the sliding frame, a motor mounted on the automatic machine tool corresponding to the first toothed plate, and a gear sleeved on the output shaft of the motor and intermeshed with the first toothed plate. A plurality of insertion grooves are formed in the top of the sliding frame, and a same feeding piece is insertedly connected in the plurality of insertion grooves.

[0008] As a further description of the above technical solution: The feeding piece comprises a plurality of first magnetic pads, the plurality of first magnetic pads are respectively clamped on the bottom of the plurality of insertion grooves, the top of the plurality of first magnetic pads is magnetically attracted to a second magnetic pad, a plurality of insertion rods are insertedly connected in the plurality of insertion grooves, the ends of the plurality of insertion rods are respectively connected to the plurality of second magnetic pads, and the other ends of the plurality of insertion rods are connected to a same feeding plate.

[0009] As a further description of the above technical solution: A plurality of first adapter grooves are formed in the inner wall of the feeding groove, the clamping assembly is simultaneously rotationally connected in the plurality of first adapter grooves, the clamping assembly comprises an inner cylinder located on the inner side of the feeding groove, the inner cylinder is connected to the top of the feeding frame, an outer cylinder is sleeved on the outer periphery of the inner cylinder inside the feeding groove, the outer wall of the outer cylinder is connected to a movable block corresponding to the plurality of first adapter grooves, the movable block is rotationally connected in the first adapter groove, a fixed block is clamped in the first adapter groove, and an arc spring is connected between the fixed block and the movable block.

[0010] As a further description of the above technical solution: A plurality of clamping plates in annular array are connected to the inner side of the inner cylinder, an antiskid pad is connected to the inner side wall of the clamping plate, a plurality of adjusting holes are formed in the outer wall of the inner cylinder corresponding to a single clamping plate, a first adapter is sleeved in the adjusting hole, the end of the first adapter is connected to the outer side wall of the clamping plate, an adjusting rod is rotationally connected to the inner side of the first adapter, the other end of the adjusting rod is rotationally connected to a second adapter, and the other end of the second adapter is connected to the inner side wall of the outer cylinder.

[0011] As a further description of the above technical solution: The upper feeding frame top is provided with an exhaust hole corresponding to the inner side of the inner cylinder, and a first plugging assembly is connected to the upper feeding frame top corresponding to the exhaust hole, the first plugging assembly comprises a plugging cover connected to the position of the upper feeding frame top corresponding to the exhaust hole, the inner side of the plugging cover protruding head is connected with an adapter shaft, the adapter shaft is rotatably connected with an adapter frame, the adapter frame is connected to the upper feeding frame top, the adapter shaft is sleeved with an adapter spring, and the adapter frame is elastically connected with the adapter shaft through the adapter spring.

[0012] As a further description of the above technical solution: The side end surface of the upper feeding frame is provided with a tension slot, and a tension assembly is embedded in the tension slot, the tension assembly comprises a plurality of tooth rings, the plurality of tooth rings are respectively sleeved on a plurality of outer cylinders, the inner wall of the upper feeding groove is provided with a second adapter groove corresponding to the tooth ring, the tooth ring is rotatably connected in the second adapter groove, the tension slot is communicated with the plurality of upper feeding grooves, a second tooth plate is slidably connected in the tension slot, a threaded groove is formed in the end of the second tooth plate, and a threaded rod is threadedly connected in the threaded groove.

[0013] As a further description of the above technical solution: The polishing assembly comprises a third magnetic pad connected to the inner top of the combined groove, the bottom of the third magnetic pad is magnetically attracted to a fourth magnetic pad, the bottom of the fourth magnetic pad is connected to a polishing shaft, the other end of the polishing shaft is rotatably connected to a piston disc, and a polishing roller for polishing the thread surface of the steel pipe is sleeved on the polishing shaft.

[0014] As a further description of the above technical solution: A plurality of blowdown holes are formed in the bottom of the piston disc, and a second plugging assembly is connected to the bottom of the piston disc corresponding to the plurality of blowdown holes, and the second plugging assembly has the same structure as the first plugging assembly.

[0015] As described above, due to the adoption of the above technical solution, the beneficial effects of the present application are: 1、In the present application, the pretreatment and chip removal control are controlled, the piston disc enters the steel pipe when the tapping drill bit descends, the first plugging assembly is turned over to compress the adapter spring to form a negative pressure environment, air is discharged through the exhaust hole to suppress 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 and ascends after tapping is completed, the polishing roller is reversely rotated by using inertia driving, the thread burrs are removed by micro-cutting and the surface roughness is optimized, the chips are removed and recycled, the exhaust hole is closed and the second plugging assembly is opened when the piston disc is reset, a directional airflow is formed to suck the metal chips into the steel pipe, the dust closed-loop recycling is realized, and the dust concentration in the workshop is effectively reduced.

[0016] 2、The magnet type quick clamping, the first magnetic pad is embedded in the plug-in slot on the slide frame, the loading plate is vertically inserted through the plug-in rod, the magnetic attraction force realizes quick positioning and multi-point fixing, simplifies the loading and unloading process and ensures the transportation stability, realizes automatic feeding and accurate positioning, the motor drives the gear to move transversely along the first tooth plate, drives the slide frame to slide along the guide rail, realizes step positioning through the feedback of the encoder, so that the steel pipe to be processed is automatically aligned below the tapping drill bit, realizes cycle processing and efficiency improvement, the tapping drill bit is lifted after completing single tapping, the motor drives the slide frame to move intermittently at a preset step distance, realizes the automatic loading-positioning-processing cycle of the steel pipe, shortens the non-processing time and improves the thread processing efficiency.

[0017] 3、The thrust is transmitted to the clamping plate through the first adapter, under the action of the thrust, a plurality of clamping plates are gathered to the center synchronously, until the steel pipe is tightly fitted and fixed, the anti-skid pad arranged on the inner side of the clamping plate significantly improves the stability of the clamped steel pipe by increasing the friction force of the contact surface, the design can simultaneously complete the synchronous clamping and fixing of a plurality of steel pipes through a single threaded rod driving a plurality of clamping mechanisms in linkage, effectively improving the processing efficiency and operation convenience. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The overall structure schematic diagram of a steel pipe thread processing equipment is provided for the present application; Figure 2 The structure schematic diagram of a steel pipe thread processing equipment from another perspective is provided for the present application; Figure 3 The structure schematic diagram of a steel pipe thread processing equipment is provided for the present application; Figure 4 The structure schematic diagram of a steel pipe thread processing equipment is provided for the present application; Figure 5 The structure schematic diagram of a steel pipe thread processing equipment is provided for the present application; Figure 4 Figure 6 The structure schematic diagram of a steel pipe thread processing equipment is provided for the present application; Figure 7 The structure schematic diagram of a steel pipe thread processing equipment is provided for the present application; Figure 8 The structure schematic diagram of a steel pipe thread processing equipment is provided for the present application; Figure 9 The structure schematic diagram of a steel pipe thread processing equipment is provided for the present application;

[0019] Legend: ​1, automatic machine tool; 2, base; 3, sliding groove; 4, automatic feeding assembly; 401, sliding frame; 402, first tooth plate; 403, gear; 404, motor; 405, plug-in slot; 406, feeding piece; 4061, first magnetic pad; 4062, second magnetic pad; 4063, plug-in rod; 4064, feeding plate; 4065, feeding slot; 4066, feeding frame; 5, first adapter slot; 6, clamping assembly; 601, inner cylinder; 602, outer cylinder; 603, movable block; 604, fixed block; 605, arc spring; 606, adjusting hole; 607, clamping plate; 608, non-slip pad; 609, first adapter; 610, adjusting rod; 611, second adapter; 7, first plugging assembly; 701, plugging cover; 702, adapter shaft; 703, adapter frame; 704, adapter spring; 8, tensioning assembly; 801, tooth ring; 802, second tooth plate; 803, threaded rod; 9, tensioning slot; 10, tapping drill bit; 11, combination slot; 12, polishing assembly; 121, third magnetic pad; 122, fourth magnetic pad; 123, polishing shaft; 124, piston disc; 125, polishing roller; 13, second plugging assembly. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0021] Please refer to the drawings Figure 1 - the drawings Figure 9 The present application provides a technical solution: a steel pipe thread machining equipment, comprising an automatic machine tool 1, a tapping drill bit 10 is sleeved in the tapping tool handle of the automatic machine tool 1, a base 2 is connected below the automatic machine tool 1 corresponding to the tapping drill bit 10, a sliding groove 3 is formed in the side end face of the base 2, an automatic feeding assembly 4 is slidably connected in the sliding groove 3, and the automatic feeding assembly 4 is combined with the tapping drill bit 10 to tap a plurality of steel pipes. A plurality of clamping assemblies 6 are embedded in the inner side of the automatic feeding assembly 4 to clamp and fix the steel pipes, a combination slot 11 is formed in the bottom end of the tapping drill bit 10 corresponding to the inner side of the clamping assembly 6, and a polishing assembly 12 is sleeved in the combination slot 11 to polish the thread surface by using the remaining torsion of the automatic machine tool 1.

[0022] Specifically, the automatic feeding assembly 4 comprises a sliding frame 401 slidably connected in the sliding groove 3, a first tooth 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 tooth plate 402, and a gear 403 sleeved on the output shaft of the motor 404 and meshing with the first tooth plate 402. The top of the sliding frame 401 is provided with a plurality of insertion grooves 405, and the same upper feeding part 406 is insertedly connected in the plurality of insertion grooves 405. The upper feeding part 406 includes a plurality of first magnetic pads 4061, the plurality of first magnetic pads 4061 are respectively clamped at the bottom of the plurality of insertion grooves 405, the top of the plurality of first magnetic pads 4061 is magnetically attracted to a second magnetic pad 4062, a plurality of insertion rods 4063 are insertedly connected in the plurality of insertion grooves 405, the ends of the plurality of insertion rods 4063 are respectively connected with the plurality of second magnetic pads 4062, and the other ends of the plurality of insertion rods 4063 are connected with the same upper feeding plate 4064. The top of the upper feeding plate 4064 is connected with an upper feeding frame 4066, and the upper feeding frame 4066 is provided with a plurality of upper feeding grooves 4065 corresponding to the tapping drill bits 10.

[0023] The embodiment is specific: the operator inserts the plurality of steel pipes to be processed one by one into the inside of the corresponding inner cylinder 601, then rotates the threaded rod 803 using a wrench, because the threaded rod 803 is rotatably connected with the upper feeding frame 4066, when the threaded rod 803 rotates in the threaded groove, it drives the second toothed plate 802 to produce linear displacement along the elastic groove 9, and because the second toothed plate 802 is meshed with the plurality of toothed rings 801, the sliding process will synchronously drive all the toothed rings 801 to rotate, when the toothed rings 801 rotate, the outer cylinder 602 is driven to rotate in the first adapter 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 the plurality of second adapters 611 to rotate, the second adapter 611 exerts a pushing force on one end of the adjusting rod 610, so that the adjusting rod 610 rotates around the second adapter 611 as a fulcrum, the other end rotates in the first adapter 609, and transmits the pushing force to the clamping plate 607 through the first adapter 609, under the action of the pushing force, the plurality of clamping plates 607 synchronously gather towards the center until tightly fit and fix the steel pipe.

[0024] Specifically, a plurality of first adapter grooves 5 are formed in the inner wall of the feeding groove 4065, and the clamping assembly 6 is simultaneously rotationally connected in the plurality of first adapter grooves 5. The clamping assembly 6 includes an inner cylinder 601 located on the inner side of the feeding groove 4065, and the inner cylinder 601 is connected to the top of the feeding rack 4066. An outer cylinder 602 is sleeved on the outer periphery of the inner cylinder 601 inside the feeding groove 4065. The outer wall of the outer cylinder 602 is connected with a movable block 603 corresponding to the plurality of first adapter grooves 5. The movable block 603 is rotationally connected in the first adapter groove 5. A fixed block 604 is clamped in the first adapter groove 5. An arc spring 605 is connected between the fixed block 604 and the movable block 603. A plurality of clamping plates 607 in a ring array are connected to the inner side of the inner cylinder 601. The inner side wall of the clamping plate 607 is connected with an anti-skid pad 608. A plurality of adjusting holes 606 are formed in the outer wall of the inner cylinder 601 corresponding to a single clamping plate 607. A first adapter 609 is sleeved in the adjusting hole 606. The end of the first adapter 609 is connected to the outer side wall of the clamping plate 607. An adjusting rod 610 is rotationally connected to the inner side of the first adapter 609. The other end of the adjusting rod 610 is rotationally connected with a second adapter 611. The other end of the second adapter 611 is connected to the inner side wall of the outer cylinder 602. An exhaust hole is formed in the top of the feeding rack 4066 corresponding to the inner side of the inner cylinder 601. A first plugging assembly 7 is connected to the inner top of the feeding rack 4066 corresponding to the exhaust hole. The first plugging assembly 7 includes a plugging cover 701 connected to the inner top of the feeding rack 4066 corresponding to the position of the exhaust hole. The inner side of the plugging cover 701 is clamped with an adapter shaft 702. The adapter shaft 702 is rotationally connected with an adapter frame 703. The adapter frame 703 is connected to the inner top of the feeding rack 4066. An adapter spring 704 is sleeved on the adapter shaft 702. The adapter frame 703 is elastically connected with the adapter shaft 702 through the adapter spring 704. A slack groove 9 is formed in the side end face of the feeding rack 4066. A slack assembly 8 is embedded in the slack groove 9. The slack assembly 8 includes a plurality of tooth rings 801. The plurality of tooth rings 801 are sleeved on the plurality of outer cylinders 602 respectively. A second adapter groove is formed in the inner wall of the feeding groove 4065 corresponding to the tooth ring 801. The tooth ring 801 is rotationally connected in the second adapter groove. The slack groove 9 is communicated with the plurality of feeding grooves 4065. A second tooth plate 802 is slidably connected in the slack groove 9. A threaded groove is formed in the end of the second tooth plate 802. A threaded rod 803 is threadedly connected in the threaded groove. The end of the threaded rod 803 is rotationally connected with the feeding rack 4066.

[0025] In the initial assembly stage, the plurality of first magnetic pads 4061 are pre-installed at the bottom of the insertion grooves 405 of the sliding frame 401, the operator places the feeding plate 4064 clamping a plurality of steel pipes to be processed on the sliding frame 401 stably, the plurality of insertion rods 4063 at the bottom of the feeding plate 4064 are inserted into the corresponding insertion grooves 405 synchronously, the second magnetic pads 4062 connected to the bottom end of the insertion rods 4063 are tightly attached to the first magnetic pads 4061 through magnetic attraction force, the feeding plate 4064 and the sliding frame 401 are quickly positioned and stably connected, the magnetic absorption type combined design not only simplifies the loading and unloading process of the steel pipes, but also ensures the stability of the steel pipes in the transportation and processing process through multi-point magnetic absorption fixation, lays a foundation for subsequent efficient processing, in the automatic feeding stage, the motor 404 is started to drive 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 transversely along the sliding groove through mechanical linkage, when the sliding frame 401 is displaced to the preset position, the steel pipe to be processed located at the rightmost side is accurately positioned 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 completes tapping of the steel pipe, then the drill bit is lifted quickly to separate from the workpiece, in the circulating processing stage, the motor 404 is continuously operated to drive the sliding frame 401 to move intermittently at a preset step distance, so that the steel pipe to be processed enters the tapping station in turn.

[0026] Specifically, the polishing assembly 12 comprises a third magnetic pad 121 clamped to the top of the combined groove 11, the bottom of the third magnetic pad 121 is magnetically attracted to a fourth magnetic pad 122, the bottom of the fourth magnetic pad 122 is connected to a polishing shaft 123, the other end of the polishing shaft 123 is rotatably connected to a piston disc 124, a polishing roller 125 for polishing the thread surface of the steel pipe is sleeved on the polishing shaft 123, a plurality of blow-off holes are formed in the bottom of the piston disc 124, and the bottom of the piston disc 124 is connected with a second plugging assembly 13 corresponding to the plurality of blow-off holes, the second plugging assembly 13 has the same structure as the first plugging assembly 7.

[0027] The embodiment is specific: the tapping pretreatment and chip control stage, the automatic machine tool 1 drives the tapping drill bit 10 to vertically descend, and the piston disc 124 is synchronously triggered to enter the steel pipe to be processed. During the downward sliding process of the piston disc 124, the blocking cover 701 of the first blocking assembly 7 is turned over inside the adapter frame 703 through the adapter shaft 702, the compression adapter spring 704 forms elastic potential energy storage, at this time, the air below the piston disc 124 in the steel pipe is discharged through the exhaust hole, a dynamic negative pressure environment is formed, the accumulation of iron chips is effectively inhibited, and the risk of processing thermal deformation is reduced. The tapping processing and reverse polishing stage, after the tapping drill bit 10 completes the thread processing, the machine tool controls the drill bit to reversely rotate and ascend, the machine tool stops torque output at the moment of separating from the thread surface, the tapping drill bit 10 continues to rotate under the action of inertia, through the rigid connection of the polishing shaft 123 and the tapping drill bit 10, the polishing roller 125 starts to reversely rotate, the spiral groove direction is opposite to the thread rotation direction, the design eliminates the thread burr through micro-cutting, and the thread surface roughness is optimized. The chip removal and environmental protection recovery stage, during the upward resetting process of the piston disc 124, the blocking cover 701 of the first blocking assembly 7 is automatically closed under the action of the restoring force of the adapter spring 704, the blocking cover 701 of the second blocking assembly 13 is synchronously triggered to open, and the external air forms a directional airflow through the steel pipe opening.

[0028] Working principle, in use: The operator inserts the plurality of steel pipes to be processed into the inside of the corresponding inner cylinder 601 one by one, then rotates the threaded rod 803 using a wrench. Since the threaded rod 803 is connected to the feeding frame 4066 in a rotating manner, when the threaded rod 803 rotates in the threaded groove, it drives the second toothed plate 802 to produce linear displacement along the tension groove 9. Thanks to the meshing design of the second toothed plate 802 and the plurality of toothed rings 801, the sliding process will synchronously drive all the toothed rings 801 to rotate. When the toothed rings 801 rotate, the outer cylinder 602 is driven to rotate in the first adapter 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 the plurality of second adapters 611 to rotate, the second adapters 611 apply a pushing force to one end of the adjusting rod 610, so that the adjusting rod 610 rotates around the second adapter 611 as a fulcrum, the other end rotates in the first adapter 609, and the pushing force is transmitted to the clamping plate 607 through the first adapter 609. Under the action of the pushing force, the plurality of clamping plates 607 are synchronously gathered towards the center until they are tightly fitted and fixed to the steel pipe. The anti-skid pads 608 arranged on the inner side of the clamping plate 607 significantly improve the stability of the steel pipe after clamping by increasing the friction force of the contact surface. This design drives multiple sets of clamping mechanisms through a single threaded rod 803, which can simultaneously complete the synchronous clamping and fixing of multiple steel pipes, effectively improving the processing efficiency and operation convenience. In the initial assembly stage, a plurality of first magnetic pads 4061 are pre-embedded in the bottom of the insertion slot 405 of the sliding frame 401. The operator places the loading plate 4064 holding a plurality of steel pipes to be processed on the sliding frame 401 stably. The insertion rods 4063 at the bottom of the loading plate 4064 are inserted into the corresponding insertion slots 405 synchronously. The second magnetic pads 4062 connected to the bottom end of the insertion rods 4063 are tightly attached to the first magnetic pads 4061 by magnetic attraction force, realizing the rapid positioning and stable connection of the loading plate 4064 and the sliding frame 401. This magnetic attraction type combination design not only simplifies the loading and unloading process of the steel pipes, but also ensures the stability of the steel pipes during transportation and processing through multi-point magnetic attraction fixation, laying a foundation for subsequent efficient processing. In the automatic feeding stage, the 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 horizontally along the sliding groove through mechanical linkage. When the sliding frame 401 moves to the preset position, the rightmost steel pipe to be processed is accurately positioned below the tapping drill bit 10. At this time, the automatic machine tool 1 controls the tapping drill bit 10 to vertically press down and complete the tapping of the steel pipe. Then the drill bit is quickly lifted to separate from the workpiece. In the cycle processing stage, the motor 404 continues to operate to drive the sliding frame 401 to move intermittently at a preset step distance, so that the steel pipes to be processed enter the tapping station one by one. Through the cooperation of gear 403 and rack transmission and magnetic attraction positioning, the system realizes automatic feeding, accurate positioning and continuous processing of the steel pipes, effectively shortens the non-processing time and significantly improves the overall efficiency of thread processing. In the tapping pretreatment and chip removal control stage, the automatic machine tool 1 drives the tapping drill bit 10 to vertically descend, and simultaneously triggers the piston disc 124 to enter the steel pipe to be processed. During the downward sliding process of the piston disc 124, the closure cover 701 of the first closure assembly 7 is turned over inside the adapter frame 703 through the adapter shaft 702, compressing the adapter spring 704 to form 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, effectively inhibiting the accumulation of iron filings and reducing the risk of processing thermal deformation. In the tapping processing and reverse polishing stage, after the tapping drill bit 10 completes the thread processing, the machine tool controls the drill bit to rotate upward in reverse, and the machine tool stops torque output at the moment of separating from the thread surface. The tapping drill bit 10 continues to rotate under the action of inertia. Through the rigid connection of the polishing shaft 123 and the tapping drill bit 10, the polishing roller 125 starts to rotate in reverse. The direction of the spiral groove is opposite to the rotation direction of the thread. This design eliminates thread burrs through micro-cutting and optimizes the roughness of the thread surface. In the chip removal and environmental recycling stage, during the upward resetting process of the piston disc 124, the closure cover 701 of the first closure assembly 7 is automatically closed under the restoring force of the adapter spring 704, and simultaneously triggers the closure cover 701 of the second closure assembly 13 to open. The external air forms a directional airflow through the steel pipe opening, sucking the metal chips generated by polishing into the steel pipe. This closed-loop chip removal system can reduce the diffusion of processing dust and significantly improve the air quality in the workshop.

[0029] The above merely describes preferred embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can make equivalent replacements or changes within the technical scope disclosed by the present application and according to the technical solutions and inventive concept of the present application, which should be covered within the protection scope of the present application.

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). The combination groove (11) is fitted with a grinding component (12) to grind the thread surface using the remaining torque of the automatic machine tool (1).

2. The steel pipe thread processing equipment according to claim 1, characterized in that, 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).

3. The steel pipe thread processing equipment according to claim 2, characterized in that, 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 end of the multiple insertion rods (4063) is 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).

4. The steel pipe thread processing equipment according to claim 3, 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).

5. The steel pipe thread processing equipment according to claim 4, 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).

6. The steel pipe thread processing equipment according to claim 5, characterized in that, 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 engaged 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).

7. The steel pipe thread processing equipment according to claim 6, 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).

8. The steel pipe thread processing equipment according to claim 1, characterized in that, 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).

9. A steel pipe thread processing equipment according to claim 8, characterized in that, The piston disc (124) has multiple drain holes at its bottom. The piston disc (124) is connected to a second sealing component (13) at the bottom of each drain hole. The second sealing component (13) has the same structure as the first sealing component (7).

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