Iron tower steel structural part cutting, bending and drilling integrated machining equipment and method

Abstract

The invention discloses iron tower steel structural part cutting, bending and drilling integrated machining equipment and method. The equipment comprises a main frame, supporting legs, a cold-rolled steel plate, reinforcing ribs, a base substrate, a positioning seat, a clamping air cylinder, a supporting stand column, a rotating main shaft, a rotating connecting disc, a cantilever, a plasma cutting head, a bending air cylinder, a drilling main shaft head and an electric telescopic rod; supporting legs are fixedly connected to the four corners of the bottom of the main frame, reinforcing ribs are transversely and fixedly connected into the main frame, a cold-roll steel plate is fully laid on the upper surface of the main frame, a base substrate is fixedly connected to the center of the cold-roll steel plate, a positioning seat is fixedly connected to the upper surface of the base substrate, and movable clamping plates are hinged to the left side and the right side of the positioning seat through movable shafts. A workpiece is clamped at a time through the positioning base and the movable clamping plate, the rotating motor drives the rotating main shaft, the cantilever drives the machining head to rotate to switch stations, double positioning is matched, the whole process is completed through one-time clamping, the precision reaches the standard, efficiency is improved, the device is suitable for workpieces of multiple specifications, and occupied space is reduced.

Description

Technical Field

[0001] This invention relates to the field of steel tower processing equipment technology, specifically to an integrated processing equipment and method for cutting, bending, and drilling steel tower components. Background Technology

[0002] Currently, the processing of steel structural components for iron towers mostly adopts a "separate equipment, step-by-step operation" model: the cutting process relies on independent plasma cutting machines, bending requires dedicated hydraulic bending machines, and drilling uses bench drills or radial drills. Workpieces need to be manually transferred between multiple machines and repeatedly clamped and positioned, which not only results in large secondary positioning errors and low processing efficiency, but also requires a large workshop space and has a high proportion of labor costs. Although some existing "integrated processing equipment" integrates multiple processes, they mostly adopt a "translational multi-station" structure, relying on complex guide rails, sliders, and multiple sets of drive cylinders to achieve station switching. This has the disadvantages of many transmission components and high maintenance costs. Moreover, its positioning fixtures are mostly special structures, and the fixtures need to be disassembled and reassembled when changing different specifications of workpieces, resulting in poor adaptability. At the same time, the alignment of the processing head and the workpiece of existing equipment mostly relies on manual calibration, lacking a precise mechanical + sensor dual positioning mechanism, which is prone to processing deviations. Furthermore, there is no integrated design solution for the mold matching of the bending process, the feed control of the drilling process, and the adaptation of multiple specifications of workpieces, making it difficult to meet the processing needs of small batches and multiple specifications of iron tower steel structural components. Summary of the Invention

[0003] The purpose of this invention is to provide an integrated processing equipment and method for cutting, bending, and drilling steel structural components for iron towers, in order to solve the problems mentioned in the background art, such as large positioning errors, low efficiency, large footprint caused by separate equipment operation for processing steel structural components for iron towers, as well as the complex structure, poor adaptability, and insufficient positioning accuracy of existing integrated equipment.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an integrated processing equipment for cutting, bending, and drilling steel structural components of iron towers, comprising a main frame, legs, cold-rolled steel plates, reinforcing ribs, a base plate, a positioning seat, a clamping cylinder, a support column, a rotating spindle, a rotating connecting plate, a cantilever, a plasma cutting head, a bending cylinder, a drilling spindle head, and an electric telescopic rod. The main frame has legs fixedly connected to its four bottom corners, and reinforcing ribs are horizontally fixedly connected inside the main frame. The upper surface of the main frame is fully covered with cold-rolled steel plates. The base plate is fixedly connected to the center of the cold-rolled steel plates. A positioning seat is fixedly connected to the upper surface of the base plate. Movable clamping plates are hinged to the left and right sides of the positioning seat via movable shafts. A clamping cylinder is installed at the end of the movable clamping plate away from the positioning seat. The movable shaft is installed on the top of the base plate. A support column is erected on the main frame and located outside the base plate. A rotary bearing seat is fixed at the top, and a rotary spindle is coaxially inserted inside the seat. The rotary spindle is equipped with a rotary motor. A rotary connecting plate is fixedly connected to the upper end of the rotary spindle. Three cantilever arms are provided. Three cantilever arms are evenly fixedly connected to the bottom surface of the rotary connecting plate along the circumference. The ends of the three cantilever arms away from the rotary connecting plate are respectively equipped with a plasma cutting head, a bending cylinder and bending pressure head assembly, and a drilling spindle head and drill bit assembly. The bending cylinder and bending pressure head assembly includes a bending cylinder and a bending pressure head fixed to its telescopic end. The drilling spindle head and drill bit assembly includes a drilling spindle head and a drill bit installed at its output end. An electric telescopic rod fixing frame is fixedly connected to the inner side of the support column. An electric telescopic rod is installed on the electric telescopic rod fixing frame. The drilling spindle head is a servo spindle head with a built-in vertical feed mechanism, and its feed mechanism is a ball screw feed structure.

[0005] Furthermore, the supporting columns are distributed in a square shape on the outside of the base plate, and the top of each supporting column is fixedly connected to the lower surface of the connecting plate. The upper surface of the connecting plate is fixedly connected to the lower surface of the rotary bearing seat, and the rotary bearing seat and the rotary spindle are interference fit.

[0006] Furthermore, one end of each cantilever is fully welded to the rotating connecting plate, the plasma cutting head is bolted to the lower side of the corresponding cantilever via an adjustable bracket, the bending cylinder is bolted to the upper surface of the corresponding cantilever, the bending pressure head is fixedly connected to the telescopic end of the bending cylinder, the drill bit is detachably mounted on the output end of the drilling spindle head, and the adjustable bracket is a multi-degree-of-freedom adjustment bracket with a horizontal adjustment slider and a vertical adjustment screw, which can finely adjust the position of the plasma cutting head.

[0007] Furthermore, an anti-slip rubber pad is attached to the side of the movable clamping plate facing the positioning seat, the movable clamping plate rotates around the movable axis, and the telescopic end of the clamping cylinder is hinged to the movable clamping plate.

[0008] Furthermore, the cylinder of the electric telescopic rod is bolted to the electric telescopic rod fixing frame, and the axis of the electric telescopic rod is parallel to the upper surface of the base plate.

[0009] Furthermore, the lower surface of the rotary bearing housing is provided with multiple proximity sensors and multiple limiting pins. The proximity sensors are evenly distributed around the circumference of the lower bottom surface of the rotary bearing housing. Each limiting pin is set in a one-to-one correspondence with a plurality of proximity sensors. The extension and retraction direction of the limiting pins is parallel to the axis of the rotary spindle. A positioning block is fixedly connected to one end of the cantilever near the rotary bearing housing. A limiting hole adapted to the limiting pin is opened on the cantilever. The positioning block cooperates with the proximity sensor to realize station detection, and the limiting pin cooperates with the limiting hole to realize station mechanical locking.

[0010] Furthermore, the nozzle of the plasma cutting head is vertically downward, the telescopic end of the bending cylinder is vertically downward and passes through the cantilever and is fixedly connected to the bending pressure head, the drilling spindle head is fixedly connected to the outer end flange of the corresponding cantilever, the axis of the drill bit is vertically downward, the positioning seat is a U-shaped groove positioning seat, and the inner wall of its U-shaped groove is detachably equipped with a lower bending die. The lower bending die and the bending pressure head cooperate to realize the bending operation. The lower bending die is a replaceable modular structure.

[0011] This invention discloses an integrated processing method for cutting, bending, and drilling steel structural components of iron towers. Based on the aforementioned integrated processing equipment for cutting, bending, and drilling steel structural components of iron towers, the method includes the following steps: Step 1, loading and positioning: The steel structural component of the iron tower is placed in the U-shaped groove of the positioning seat. A suitable bending die is assembled according to the bending requirements of the workpiece. The clamping cylinder is activated, and the telescopic end of the clamping cylinder extends to push the movable clamping plate to rotate around the movable axis until the anti-slip rubber pads of the two movable clamping plates are tightly fitted to the outer wall of the steel structural component, thus completing the clamping and fixing of the steel structural component. Simultaneously, according to the processing height of the steel structural component, the telescopic amount of the electric telescopic rod is adjusted so that the telescopic end of the electric telescopic rod abuts against the top of the steel structural component, achieving auxiliary positioning. Step 2: The workstation rotates. The rotary motor is started, and the rotary motor drives the rotary spindle to rotate in the rotary bearing housing. The rotary spindle drives the rotary connecting plate and the three cantilever arms to rotate synchronously. When the proximity sensor detects the positioning block of the corresponding cantilever arm, the rotary motor stops working, and the limit pin extends and inserts into the limit hole of the cantilever arm, completing the precise alignment of the first processing station. Step 3, process processing: If the alignment is the plasma cutting head station, adjust the adjustable bracket to match the distance between the plasma cutting head and the workpiece, and start the plasma cutting head to cut the steel structure to the preset size. After cutting, start the rotary motor again, release the limit pin, rotate to the bending cylinder and bending pressure head station and complete the precise positioning. Adjust the downward stroke and holding time of the bending cylinder according to the preset bending angle, start the bending cylinder, and the bending cylinder pushes the bending pressure head to move vertically downward, cooperating with the bending lower die to bend the steel structure at the preset angle. After bending, continue to rotate to the drilling spindle head and drill bit station and complete the precise positioning. Adjust the rotation speed of the drilling spindle head and the downward feed speed of the ball screw feed structure according to the preset hole diameter and hole position, start the drilling spindle head, and the drilling spindle head drives the drill bit to rotate at high speed and feed in the vertical direction to drill the steel structure. Step four: Material unloading and receiving. After the cutting, bending, and drilling processes are completed, shut down all processing components, start the clamping cylinder to retract its telescopic end, and rotate the movable clamp plate in the opposite direction around the movable shaft to release the clamp on the steel structure. At the same time, adjust the telescopic end of the electric telescopic rod to retract and release the auxiliary positioning. Finally, remove the processed steel structure from the positioning seat to complete the entire processing process.

[0012] Furthermore, in step three, the cutting speed of the plasma cutting head, the downward stroke and holding time of the bending cylinder, and the rotational speed and downward feed speed of the drilling spindle head are all preset and adjusted according to the material and specifications of the steel structure components of the tower. In each processing step, the electric telescopic rod always maintains auxiliary positioning of the top of the steel structure component to prevent displacement. During the rotation of the cantilever driven by the rotating connecting plate, the three cantilever arms always remain horizontal, and the working ends of the plasma cutting head, bending pressure head, and drill bit are always aligned with the center position of the positioning seat.

[0013] Compared with the prior art, the beneficial effects of the present invention are: 1. By abandoning the complex guide rail and slider structure of traditional translational multi-station, and adopting an integrated architecture of rotary spindle and three cantilever, the cutting, bending and drilling processing heads are integrated into the same equipment. The rotary station switching replaces manual transfer, which shortens the processing time of a single workpiece, reduces the equipment footprint, and reduces transmission components, thereby reducing maintenance costs. The elimination of the complex guide rail and slider structure of traditional translational multi-station enables the integrated rotary station design, which reduces costs, improves efficiency and reduces the footprint. 2. By using movable clamping plates and electric telescopic rods for workpiece clamping and positioning, and with the help of proximity sensors and limit pins for station alignment, the workpiece can complete all processes in one clamping, eliminating the secondary positioning error of traditional separate equipment processing, greatly improving processing accuracy, meeting the assembly requirements of steel tower components, and eliminating positioning errors through dual positioning and one clamping. 3. By designing a U-shaped groove positioning seat and limit adjustment block, a replaceable modular bending lower die, a multi-degree-of-freedom adjustable cutting bracket, and a detachable drill bit, it can adapt to commonly used light steel structural components of iron towers without the need to replace special fixtures. It can be adapted to the common light steel structural components of iron towers by simply adjusting and replacing modular components. The mold change time is greatly shortened, improving the practicality of small batch and multi-specification processing scenarios, realizing a modular and adjustable structure to adapt to multi-specification workpieces. 4. The plasma cutting speed, bending cylinder pressure stroke, holding time, drilling spindle speed, and feed speed can all be preset and adjusted according to the workpiece material and specifications. The bending head and lower die are precisely matched, and the drilling spindle has a built-in ball screw feed, ensuring the consistency of processing quality in each process. The standardized processing parameters are designed to adapt to different materials. 5. By incorporating internal reinforcing ribs in the main frame, arranging the supporting columns in a square pattern, and fully welding the cantilever and rotating connecting plate together, the overall rigidity of the equipment is significantly enhanced, the stress generated by processing vibration is dispersed, and the equipment deformation after long-term use is avoided, thereby optimizing structural rigidity and improving processing stability. Attached Figure Description

[0014] Figure 1 This is a front view of the overall structure of the present invention; Figure 2 This is a top view of the main frame and reference positioning platform assembled in this invention; Figure 3 This is a front view of the rotating mechanism and processing head assembly of the present invention; Figure 4 This is a partial enlarged view of the reference positioning stage of the present invention; Figure 5 This is a top view of the rotary bearing housing and limiting structure of the present invention; Figure 6 for Figure 5 Enlarged view of point A; Figure 7 This is a side view of the drilling station and cutting station assembly of the present invention; Figure 8 This is a schematic diagram of the positioning seat and movable clamp plate of the present invention.

[0015] In the diagram: 1. Main frame; 2. Support leg; 3. Cold-rolled steel plate; 4. Reinforcing rib; 5. Base plate; 6. Positioning seat; 7. Movable clamping plate; 8. Movable shaft; 9. Clamping cylinder; 10. Electric telescopic rod; 11. Electric telescopic rod fixing frame; 12. Support column; 13. Connecting plate; 14. Rotary bearing seat; 15. Limit pin; 16. Rotary spindle; 17. Rotary motor; 18. Proximity sensor; 19. Rotary connecting plate; 20. Cantilever; 22. Bending cylinder; 23. Bending pressure head; 24. Plasma cutting head; 25. Drilling spindle head; 26. Drill bit. Detailed Implementation

[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. 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 of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0017] Example 1: Please refer to Figure 1-8 This invention provides an integrated processing equipment for cutting, bending, and drilling steel structural components of iron towers, including a main frame 1, legs 2, cold-rolled steel plates 3, reinforcing ribs 4, a base plate 5, a positioning seat 6, a clamping cylinder 9, a support column 12, a rotating spindle 16, a rotating connecting plate 19, a cantilever 20, a plasma cutting head 24, a bending cylinder 22, a drilling spindle head 25, and an electric telescopic rod 10. The legs 2 are fixedly connected to the four corners of the bottom of the main frame 1. Reinforcing ribs 4 are horizontally fixedly connected inside the main frame 1. The upper surface of the main frame 1 is fully covered with cold-rolled steel plates 3. The base plate 5 is fixedly connected to the center of the cold-rolled steel plates 3. A positioning seat 6 is fixedly connected to the upper surface of the base plate 5. Movable clamping plates 7 are hinged to the left and right sides of the positioning seat 6 via movable shafts 8. A clamping cylinder 9 is installed at the end of the movable clamping plate 7 away from the positioning seat 6. The movable shaft 8 is installed on the top of the base plate 5. A support column 12 is erected on the main frame 1 and located outside the base plate 5, with its top fixed... A rotary bearing housing 14 is connected to a rotary spindle 16 coaxially inserted within the housing. The rotary spindle 16 is equipped with a rotary motor 17. A rotary connecting plate 19 is fixedly connected to the upper end of the rotary spindle 16. Three cantilever arms 20 are provided. The three cantilever arms 20 are evenly fixedly connected to the lower bottom surface of the rotary connecting plate 19 along the circumference. The ends of the three cantilever arms 20 furthest from the rotary connecting plate 19 are respectively equipped with a plasma cutting head 24, a bending cylinder and bending pressure head assembly, and a drilling spindle head and drill bit assembly. The bending cylinder and bending head assembly includes a bending cylinder 22 and a bending head 23 fixed to its telescopic end; the drilling spindle head and drill bit assembly includes a drilling spindle head 25 and a drill bit 26 mounted on its output end; the electric telescopic rod fixing frame 11 is fixedly connected to the inner side of the support column 12; the electric telescopic rod fixing frame 11 is equipped with an electric telescopic rod 10; the drilling spindle head 25 is a servo spindle head with its own vertical feed mechanism, and its feed mechanism is a ball screw feed structure. Specifically: This equipment uses the main frame 1 as the core load-bearing base, with fixed support legs 2 welded to the four corners of its bottom. Anti-slip pads are installed at the bottom of the support legs 2 to ensure the stability of the equipment. The main frame 1 is made of rectangular steel pipe welded together, with reinforcing ribs 4 welded evenly in the transverse direction inside to enhance the overall rigidity of the frame and avoid structural deformation caused by processing vibration. The upper surface of the main frame 1 is fully covered with cold-rolled steel plates 3, which are ground to form a flat installation reference surface. The base plate 5 is fixed to the center of the cold-rolled steel plate 3 with bolts. The base plate 5 is made of 20mm thick Q355 steel plate to provide stable load-bearing for the processing station.

[0018] The upper surface of the base plate 5 is fixed with bolts to a U-shaped groove positioning seat 6, which is a non-planar butt joint or a V-shaped groove structure. The U-shaped groove opening faces upward, and the groove width can be adapted by limiting adjustment blocks. The inner wall of the U-shaped groove of the positioning seat 6 has reserved bolt holes, and a replaceable modular bending lower die 29 can be detachably installed. The bending lower die 29 is made of Cr12MoV mold steel and the surface is quenched. Different specifications of 90°, 45°, and 135° can be replaced according to the bending angle requirements. Limiting adjustment blocks 30 are symmetrically arranged on the inner side of the U-shaped groove of the positioning seat 6. The limiting adjustment blocks 30 are connected to the positioning seat 6 by T-bolts. The distance between the two adjustment blocks can be changed by adjusting the position of the bolts to adapt to workpieces with a width of 20-200mm.

[0019] Movable clamping plates 7 are hinged to the left and right sides of the positioning seat 6 via movable shafts 8. The movable clamping plates 7 are made of 6mm thick spring steel plate, and a 3mm thick anti-slip rubber pad is attached to the side facing the positioning seat 6 to increase the friction with the workpiece. The end of the movable clamping plate 7 away from the positioning seat 6 is hinged to the telescopic end of the clamping cylinder 9 via a fisheye joint. The movable shaft 8 is mounted on the top of the base plate 5 via bearings to ensure smooth rotation of the clamping plates. The clamping cylinder 9 is an SC series standard cylinder, and the cylinder body is fixed on the base plate 5 by a bracket. The telescopic stroke can be adjusted according to the width of the workpiece.

[0020] Four supporting columns 12 are arranged in a square on the outer side of the base plate 5 on the main frame 1. The supporting columns 12 are made of seamless steel pipes and are fixed to the lower surface of the connecting plate 13 by welding at the top. The connecting plate 13 is a square steel plate and its upper surface is attached to the lower surface of the rotary bearing seat 14 and fixed by bolts. A rotary spindle 16 is coaxially inserted in the rotary bearing seat 14. The two are interference fit to eliminate the radial clearance between the spindle and the bearing seat. A rotary motor 17 is installed at the lower end of the rotary spindle 16. It is a servo motor and is connected to the rotary spindle 16 through a coupling to achieve precise speed and angle control. The upper end of the rotary spindle 16 is fixedly connected to the rotary connecting plate 19 by a flat key. The rotary connecting plate 19 is a circular steel plate. Three cantilever arms 20 are evenly welded along the circumference of the bottom surface. The cantilever arms 20 are made of rectangular steel pipes and are fully welded to the rotary connecting plate 19 to ensure load-bearing rigidity.

[0021] The ends of the three cantilever arms 20 furthest from the rotating connecting plate 19 are respectively equipped with a plasma cutting head 24, a bending cylinder and bending pressure head assembly, and a drilling spindle head and drill bit assembly. The plasma cutting head 24 is an air plasma cutting machine, which is bolted to the lower side of the corresponding cantilever arm 20 via an adjustable bracket 21. The bending cylinder and bending pressure head assembly includes a bending cylinder 22 and a bending pressure head 23 bolted to its telescopic end. The bending pressure head 23 is made of Cr12MoV material and corresponds vertically to the lower bending die 29. The drilling spindle... The head and drill bit assembly includes a drilling spindle head 25 and a drill bit 26 mounted on its output end. The drilling spindle head 25 is a servo spindle head with a built-in vertical feed mechanism. Its feed mechanism is a ball screw feed structure consisting of a servo motor, a ball screw, a linear guide, and a feed slider. The servo motor drives the ball screw to rotate, which in turn drives the feed slider and the drill bit to move vertically along the linear guide. The feed accuracy can reach ±0.01mm. The drill bit 26 can be detachably mounted on the output end of the drilling spindle head 25 via a chuck, and can be replaced with different specifications from φ4 to φ20mm.

[0022] The electric telescopic rod fixing frame 11 is fixed to the inner side of the support column 12 by bolts. The electric telescopic rod 10 is installed on the fixing frame. The electric telescopic rod 10 is an electric cylinder. The cylinder body is fixed to the fixing frame by bolts. The axis is parallel to the upper surface of the base plate 5. A rubber top block is installed at the telescopic end to avoid damaging the surface of the workpiece.

[0023] The support columns 12 are distributed in a square on the outside of the base plate 5. The top of each support column 12 is fixedly connected to the lower surface of the connecting plate 13. The upper surface of the connecting plate 13 is fixedly connected to the lower surface of the rotary bearing seat 14. The rotary bearing seat 14 and the rotary spindle 16 are interference fit. Specifically: the support columns 12 are arranged in a square, and the tops of the four columns are welded to the connecting plate 13 to form a stable frame, ensuring that the installation flatness error of the rotary bearing seat 14 is ≤0.02mm; the rotary bearing seat 14 adopts a split structure, with a built-in double-row cylindrical roller bearing, and the interference fit with the rotary spindle 16 is 0.01-0.02mm, ensuring that the radial runout of the rotary spindle 16 during rotation is ≤0.01mm, and ensuring the accuracy of station switching.

[0024] One end of each cantilever 20 is fully welded to the rotating connecting plate 19. The plasma cutting head 24 is bolted to the lower side of the corresponding cantilever 20 via the adjustable bracket 21. The bending cylinder 22 is bolted to the upper surface of the corresponding cantilever 20. The bending pressure head 23 is fixedly connected to the telescopic end of the bending cylinder 22. The drill bit 26 is detachably mounted on the output end of the drilling spindle head 25. The adjustable bracket 21 is a multi-degree-of-freedom adjustment bracket with a horizontal adjustment slider and a vertical adjustment screw, and it can finely adjust the position of the plasma cutting head 24. Specifically: one end of the cantilever 20 is fully welded to the rotating connecting plate 19, with a weld height ≥8mm, and non-destructive testing ensures no welding defects; the adjustable bracket 21 of the plasma cutting head 24 is a multi-degree-of-freedom adjustment structure, including a horizontal adjustment slider and a vertical adjustment screw. The horizontal adjustment slider is fixed to the guide rail on the lower side of the cantilever 20 by locking bolts, and can be adjusted horizontally by ±50mm. The vertical adjustment screw drives the cutting head to move up and down through a threaded connection, with an adjustment range of 0-100mm, realizing precise fine-tuning of the distance between the cutting head and the workpiece; the bending cylinder 22 is a heavy-duty cylinder, and the cylinder body is fixed to the upper surface of the corresponding cantilever 20 by bolts. The telescopic end passes vertically downward through the reserved hole of the cantilever 20 and is fixed to the bending pressure head 23 by bolts; the drilling spindle head 25 is fixed to the outer end face of the corresponding cantilever 20 through a flange. The flange end face is milled to ensure that the vertical error between the spindle axis and the base plate 5 is ≤0.02mm.

[0025] A non-slip rubber pad is attached to the side of the movable clamping plate 7 facing the positioning seat 6. The movable clamping plate 7 rotates around the movable shaft 8. The telescopic end of the clamping cylinder 9 is hinged to the movable clamping plate 7. Specifically: the rotation angle range of the movable clamping plate 7 around the movable shaft 8 is 0-30°. When the extension end of the clamping cylinder 9 is extended, it pushes the clamping plate to rotate inward until the anti-slip rubber pad is tightly attached to the outer wall of the workpiece. The clamping force is adjusted by the cylinder pressure to adapt to the clamping requirements of workpieces of different thicknesses. The hinge structure between the clamping cylinder 9 and the movable clamping plate 7 can eliminate the lateral force caused by the workpiece size deviation during the clamping process, and avoid the deformation of the clamping plate or uneven force on the workpiece.

[0026] The cylinder of the electric telescopic rod 10 is bolted to the electric telescopic rod fixing frame 11, and the axis of the electric telescopic rod 10 is parallel to the upper surface of the base plate 5. Specifically: the cylinder of the electric telescopic rod 10 is bolted to the electric telescopic rod fixing frame 11. The fixing frame can be adjusted up and down along the vertical guide rail of the support column 12 to adapt to workpieces of different heights. The telescopic stroke of the electric telescopic rod 10 is 0-200mm, and the telescopic speed is adjustable. After the telescopic end abuts against the top of the workpiece, it maintains constant pressure through the feedback signal of the pressure sensor to achieve axial auxiliary positioning and prevent longitudinal displacement of the workpiece during processing.

[0027] Multiple proximity sensors 18 and multiple limit pins 15 are provided on the lower surface of the rotary bearing housing 14. The proximity sensors 18 are evenly distributed around the circumference of the lower bottom surface of the rotary bearing housing 14. The limit pins 15 are set one-to-one with the multiple proximity sensors 18. The extension and retraction direction of the limit pins 15 is parallel to the axis of the rotary spindle 16. A positioning block 27 is fixedly connected to one end of the cantilever 20 near the rotary bearing housing 14. A limit hole 28 adapted to the limit pin 15 is opened on the cantilever 20. The positioning block 27 cooperates with the proximity sensor 18 to realize station detection. The limit pin 15 cooperates with the limit hole 28 to realize station mechanical locking. Specifically: Three proximity sensors 18 are evenly installed along the circumference of the lower surface of the rotary bearing housing 14, corresponding one-to-one with the three cantilever arms. The proximity sensors 18 are inductive proximity switches with a detection distance of 5mm and a repeatability of ±0.01mm. Three limit pins 15 are installed on the rotary bearing housing 14 at positions corresponding to the proximity sensors 18. The limit pins 15 are electromagnetic telescopic pins with a telescopic direction parallel to the axis of the rotary spindle 16 and a telescopic stroke of 10mm. A positioning block 27 is welded to one end of the cantilever arm 20 near the rotary bearing housing 14. The positioning block 27 is an iron block that corresponds to the detection surface of the proximity sensor 18. Limiting holes 28 that are adapted to the limit pins 15 are provided on the cantilever arm 20 to ensure precise fit between the pins and the holes.

[0028] The nozzle of the plasma cutting head 24 is vertically downward, the telescopic end of the bending cylinder 22 is vertically downward and passes through the cantilever 20 and is fixedly connected to the bending pressure head 23, the drilling spindle head 25 is fixedly connected to the outer end flange of the corresponding cantilever 20, the axis of the drill bit 26 is vertically downward, the positioning seat 6 is a U-shaped groove positioning seat, and the inner wall of its U-shaped groove is detachably equipped with a lower bending die 29. The lower bending die 29 and the bending pressure head 23 cooperate vertically to realize the bending operation. The lower bending die 29 is a replaceable modular structure. Specifically: the nozzle of the plasma cutting head 24 is vertically downward, and the coaxiality error with the center of the positioning seat 6 is ≤0.03mm; the telescopic end of the bending cylinder 22 is vertically downward, and the lower surface of the bending pressure head 23 has an arc transition, forming a matching forming surface with the upper surface of the bending lower die 29; the output axis of the drilling spindle head 25 is vertically downward, and the coaxiality error with the center of the positioning seat 6 is ≤0.02mm; the detachable connection structure between the bending lower die 29 and the positioning seat 6 is fixed by two bolts, and the replacement time is ≤5 minutes. Lower dies at different angles can achieve bending operations at different angles.

[0029] Example 2: An integrated processing method for cutting, bending, and drilling of steel tower components, based on an integrated processing equipment for cutting, bending, and drilling of steel tower components, includes the following steps: Step 1, loading and positioning: The steel tower component is placed in the U-shaped groove of the positioning seat 6. The appropriate bending die 29 is assembled according to the bending requirements of the workpiece. The clamping cylinder 9 is activated. The telescopic end of the clamping cylinder 9 extends and pushes the movable clamping plate 7 to rotate around the movable shaft 8 until the anti-slip rubber pads of the movable clamping plates 7 on both sides are tightly attached to the outer wall of the steel component, thus completing the clamping and fixing of the steel component. At the same time, the telescopic amount of the electric telescopic rod 10 is adjusted according to the processing height of the steel component, so that the telescopic end of the electric telescopic rod 10 abuts against the top of the steel component to achieve auxiliary positioning. Step 2: The workstation rotates. The rotary motor 17 is started. The rotary motor 17 drives the rotary spindle 16 to rotate within the rotary bearing seat 14. The rotary spindle 16 drives the rotary connecting plate 19 and the three cantilever arms 20 to rotate synchronously. When the proximity sensor 18 detects the positioning block 27 of the corresponding cantilever arm 20, the rotary motor 17 stops working, and the limit pin 15 extends and inserts into the limit hole 28 of the cantilever arm 20, completing the precise alignment of the first processing station. Step 3, process processing: If the alignment is with the plasma cutting head 24, adjust the adjustable bracket 21 to match the distance between the plasma cutting head 24 and the workpiece. Start the plasma cutting head 24 to perform a pre-set size cutting operation on the steel structure. After cutting, start the rotary motor 17 again, release the limit pin 15, rotate to the bending cylinder 22 and bending pressure head 23 position and complete precise positioning. Adjust the downward stroke and holding time of the bending cylinder 22 according to the preset bending angle, and start the bending cylinder 22. The bending cylinder 22 pushes the bending head 23 to move vertically downward, cooperating with the bending die 29 to perform a bending operation on the steel structure at a preset angle. After bending, it continues to rotate to the drilling spindle head 25 and the drill bit 26 position and completes precise positioning. According to the preset hole diameter and hole position, the rotation speed of the drilling spindle head 25 and the downward feed speed of the ball screw feed structure are adjusted. The drilling spindle head 25 is started, and the drilling spindle head 25 drives the drill bit 26 to rotate at high speed and feed in the vertical direction to perform drilling operation on the steel structure. Step four: Material unloading and receiving. After the three processes of cutting, bending, and drilling are completed, all processing components are shut down, the clamping cylinder 9 is activated to retract its telescopic end, the movable clamping plate 7 rotates in the opposite direction around the movable shaft 8 to release the clamping of the steel structure, and at the same time the telescopic end of the electric telescopic rod 10 is adjusted to retract, the auxiliary positioning is released, and finally the processed steel structure is removed from the positioning seat 6 to complete the entire processing process.

[0030] In step three, the cutting speed of the plasma cutting head 24, the downward stroke and holding time of the bending cylinder 22, and the rotation speed and downward feed speed of the drilling spindle head 25 are all preset and adjusted according to the material and specifications of the steel structure components of the iron tower. In each processing step, the electric telescopic rod 10 always maintains auxiliary positioning of the top of the steel structure component to prevent displacement. During the rotation of the rotating connecting plate 19 driving the cantilever 20 to rotate, the three cantilever 20s always remain horizontal, and the working ends of the plasma cutting head 24, bending pressure head 23, and drill bit 26 are always directly facing the center of the positioning seat 6. The U-shaped groove of the positioning seat 6 is provided with a limit adjustment block 30, which is connected to the positioning seat 6 by bolts. By adjusting the position of the limit adjustment block 30, it can adapt to steel structure components of different widths of the iron tower, realizing the fixture-free processing of multi-specification workpieces. Specifically: Step 1: Material loading and positioning, preparation work: According to the material of the steel structure component to be processed, such as Q235 flat steel, specifications, width 50mm, thickness 8mm, and processing requirements, cutting length 300mm, 90° bend, drilling diameter 10mm, hole spacing 50mm, select a suitable 90° bending die 29, and prepare φ10mm drill bit 26.

[0031] Lower die assembly: The 90° bent lower die 29 is fixed to the inner wall of the U-shaped groove of the positioning seat 6 with bolts, ensuring that the center of the lower die is aligned with the center of the positioning seat 6, and the bolt tightening torque is 30 N·m.

[0032] Limit adjustment: Loosen the T-bolt of the limit adjustment block 30, move the adjustment block to a distance of 50mm between the two blocks to match the width of the workpiece, and then tighten the bolt to fix the position of the adjustment block.

[0033] Workpiece placement: Place the flat steel piece to be processed horizontally in the U-shaped groove of the positioning seat 6, so that the cutting mark line of the workpiece is aligned with the preset cutting path of the plasma cutting head 24, and the bending position is aligned with the center of the bending lower die 29.

[0034] Clamping and fixing: Start the clamping cylinder 9, adjust the cylinder pressure to 0.5MPa, extend the telescopic end to push the movable clamping plate 7 to rotate around the movable shaft 8 until the anti-slip rubber pads of the movable clamping plates 7 on both sides are tightly attached to the outer wall of the flat steel. At this time, the workpiece does not move laterally.

[0035] Auxiliary positioning: Adjust the extension amount of the electric telescopic rod 10 according to the height of the flat steel piece, so that the rubber top block at the telescopic end abuts horizontally against the top end face of the flat steel piece, and adjust the pressure of the telescopic rod to 0.15MPa to achieve axial auxiliary positioning and prevent longitudinal displacement of the workpiece during processing.

[0036] Step 2: The workstation rotates. The rotary motor 17 is started and the rotational angular velocity is set to 1 rad / s. The rotary motor 17 drives the rotary spindle 16 to rotate within the rotary bearing seat 14, which in turn drives the rotary connecting plate 19 and the three cantilever arms 20 to rotate synchronously. During the rotation, the three cantilever arms 20 always remain horizontal, and the working ends of the plasma cutting head 24, bending head 23, and drill bit 26 are always directly facing the center position of the positioning seat 6.

[0037] When the rotating cantilever 20 drives the positioning block 27 to move to the detection range of the proximity sensor 18 corresponding to the plasma cutting head 24, the proximity sensor 18 sends an electrical signal to the PLC control system. The control system immediately stops the rotating motor 17 and simultaneously controls the corresponding limit pin 15 to extend and insert into the limit hole 28 of the cantilever 20, thus completing the precise alignment of the cutting station with an alignment error ≤0.03mm.

[0038] Step 3: Processing and Cutting Operation: Based on the material characteristics of Q235 flat steel, the preset cutting speed of the plasma cutting head 24 is 800 mm / min. Adjust the horizontal adjustment slider and vertical adjustment screw of the adjustable bracket 21 to make the distance between the cutting head nozzle and the workpiece surface 5 mm. Start the plasma cutting head 24 and perform the cutting operation along the cutting mark line according to the preset program. During the cutting process, the electric telescopic rod 10 always maintains auxiliary positioning of the top of the workpiece to prevent the workpiece from shifting due to the cutting force. After the cutting is completed, turn off the plasma cutting head 24.

[0039] Bending station switching: The PLC control system controls the limit pin 15 to retract, releases the cutting station lock, and restarts the rotary motor 17, driving the cantilever 20 to rotate to the bending cylinder 22 and bending head 23 station; when the proximity sensor 18 detects the positioning block 27 of the station, the rotary motor 17 stops, the limit pin 15 extends and inserts into the limit hole 28, completing the bending station alignment.

[0040] Bending operation: Based on the thickness of Q235 flat steel of 8mm, the preset downward stroke of bending cylinder 22 is 30mm and the holding time is 5s; when bending cylinder 22 is started, the telescopic end pushes the bending head 23 to move vertically downward, and cooperates with the 90° bending die 29 to apply pressure to the workpiece, so that the workpiece undergoes 90° plastic deformation at the preset position; after the holding time is over, the telescopic end of bending cylinder 22 retracts, and the bending operation is completed.

[0041] Drilling station switching: Release the bending station lock, and the rotary motor 17 drives the cantilever 20 to rotate to the drilling spindle head 25 and drill bit 26 station. After detection by the proximity sensor 18 and locking by the limit pin 15, the drilling station alignment is completed.

[0042] Drilling operation: Based on the φ10mm drill bit and Q235 material, the preset rotational speed of the drilling spindle head 25 is 2500r / min, and the downward feed speed of the ball screw feed mechanism is 60mm / min. The drilling spindle head 25 is started, and the spindle drives the drill bit 26 to rotate at high speed. Simultaneously, the ball screw feed mechanism drives the drill bit to feed vertically downwards, drilling the preset hole positions on the workpiece. When the feed reaches the preset drilling depth of 10mm, the ball screw feed mechanism drives the drill bit 26 to return to its original position, completing the drilling of the first hole. According to the requirement of a hole spacing of 50mm, the above drilling process is repeated to complete the machining of all holes. During the drilling process, the electric telescopic rod 10 remains positioned to prevent workpiece displacement.

[0043] Step 4: Unloading and receiving parts, shutting down all processing components: The PLC control system shuts down the power and air supply to processing components such as the plasma cutting head 24, bending cylinder 22, and drilling spindle head 25.

[0044] Release positioning and clamping: Activate clamping cylinder 9 to retract its telescopic end, causing movable clamping plate 7 to rotate in the opposite direction around movable shaft 8, thereby releasing the lateral clamping of the flat steel piece; adjust the telescopic end of electric telescopic rod 10 to retract, thereby releasing the axial auxiliary positioning.

[0045] Workpiece removal: The finished flat steel piece is manually removed from the U-shaped groove of the positioning seat 6, and the processing dimensions are checked to see if they meet the requirements.

[0046] Equipment reset: The PLC control system controls the limit pin 15 to retract, and the rotary motor 17 drives the cantilever 20 to rotate to the initial position, ready for the processing of the next workpiece.

[0047] Achieving a high degree of automation throughout the entire process, the processing time for a single workpiece is shortened compared to traditional multi-equipment processing, making it suitable for batch processing needs. With one-time clamping and full-process positioning, the processing dimensional accuracy is controlled within ±0.1mm, bending angle error ≤0.5°, drilling diameter tolerance ≤H7, and hole position error ≤0.2mm, meeting the assembly requirements of steel tower components. Processing parameters can be flexibly preset according to the workpiece material and specifications, adapting to various processing needs such as no bending, bending at different angles, and drilling with different hole diameters, demonstrating strong versatility. The operation process is simplified, requiring only manual loading and unloading, reducing the skill requirements and labor intensity of workers, thus lowering labor costs. In small-batch, multi-specification processing scenarios, mold change and parameter adjustment time is ≤5 minutes, significantly improving production flexibility and solving the pain point of long mold change times in traditional equipment.

[0048] In this invention, the core working logic of this equipment is "one-time clamping + rotary station switching + dual positioning + multi-process integrated processing", and the specific process is as follows: Workpiece clamping stage: Adjust the limit adjustment block 30 of the positioning seat 6 according to the workpiece specifications so that the distance between the two adjustment blocks matches the width of the workpiece; select the bending lower die 29 with the corresponding angle and fix it in the U-shaped groove of the positioning seat 6 with bolts; place the workpiece in the U-shaped groove of the positioning seat 6 so that the workpiece processing position is aligned with the bending lower die 29; start the clamping cylinder 9, the telescopic end extends and pushes the movable clamping plate 7 to rotate until the anti-slip rubber pad is in close contact with the workpiece, completing the lateral clamping; adjust the extension amount of the electric telescopic rod 10 so that the telescopic end abuts against the top of the workpiece, and achieve axial positioning through the feedback of the pressure sensor, completing one clamping of the workpiece.

[0049] Rotation drive stage: Start the rotary motor 17, and the servo motor drives the rotary spindle 16 to rotate according to the preset program. The rotary spindle 16 drives the rotary connecting plate 19 and the three cantilever arms 20 to rotate synchronously. The square distribution of the support column 12 and the interference fit between the rotary bearing seat 14 and the rotary spindle 16 ensure that the cantilever arms 20 always remain horizontal during the rotation process, and the rotational angular velocity is adjustable.

[0050] Station positioning and locking stage: When the cantilever 20 drives the positioning block 27 to rotate to the detection range of the proximity sensor 18, the proximity sensor 18 sends an electrical signal to the PLC control system. The control system immediately stops the rotating motor 17 and simultaneously controls the corresponding limit pin 15 to extend and insert into the limit hole 28 of the cantilever 20, realizing the dual positioning of "sensor detection positioning + mechanical locking" of the station. The positioning accuracy is ≤0.03mm, ensuring that the processing head and the workpiece are accurately aligned.

[0051] Processing head working stages: Plasma cutting: Adjust the adjustable bracket 21 to make the distance between the nozzle of the plasma cutting head 24 and the workpiece surface 5-8mm. Adjust according to the cutting current, start the plasma cutting power supply, and the cutting head moves along the preset path to complete the cutting operation of the workpiece. The cutting speed is preset according to the workpiece material. The cutting speed of Q235 steel is 600-1000mm / min, and the cutting speed of Q355 steel is 500-800mm / min.

[0052] Bending operation: The bending cylinder 22 extends according to the preset stroke, pushing the bending pressure head 23 to move vertically downward. It works in conjunction with the lower bending die 29 to apply pressure to the workpiece, causing the workpiece to undergo plastic deformation. The pressure holding time is preset to 3-10 seconds according to the workpiece thickness to prevent bending springback. After the pressure holding is completed, the cylinder retracts, completing the bending.

[0053] Drilling operation: The servo motor of the drilling spindle head 25 is started, driving the drill bit 26 to rotate at high speed. The speed is preset according to the drill bit diameter. The speed of the drill bit is 2000-3000 r / min for φ4-φ10mm and 1000-2000 r / min for φ10-φ20mm. At the same time, the ball screw feed mechanism drives the drill bit to feed vertically downward. The feed speed is preset according to the workpiece material. For Q235 steel, it is 50-100 mm / min and for Q355 steel, it is 30-80 mm / min. The drilling operation of the preset hole diameter and hole position is completed. The drilling depth is precisely controlled by the feed rate.

[0054] Station switching stage: After one process is completed, the PLC control system controls the limit pin 15 to retract, releases the station lock, and restarts the rotary motor 17 to drive the cantilever 20 to rotate to the next processing station. The process of "sensor detection - motor stop - mechanical lock" is repeated until all processes are completed.

[0055] It integrates the three major processes of cutting, bending, and drilling, replacing the traditional three separate machines. The equipment occupies a small area, reducing workshop space usage. The entire process is completed in one clamping, eliminating the secondary positioning error of traditional separate equipment processing. The processing accuracy is controlled within ±0.1mm, meeting the assembly requirements of steel tower components. Through the coordinated design of limit adjustment blocks, adjustable brackets, modular bending lower dies, detachable drill bits, and electric telescopic rods, it eliminates the need to replace special fixtures and is suitable for various types of workpieces such as flat steel, angle steel, and channel steel with widths of 20-200mm and thicknesses of 3-15mm. The rotary station switching structure replaces the complex guide rails and sliders of traditional translational multi-station systems, reducing the number of transmission components and lowering maintenance costs. The structural design of reinforcing ribs, square support columns, and fully welded cantilever enhances the rigidity of the equipment, disperses processing vibration stress, and ensures high continuous operation with no significant deformation and high processing stability.

[0056] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An integrated processing equipment for cutting, bending, and drilling steel structural components of iron towers, comprising a main frame (1), legs (2), cold-rolled steel plates (3), reinforcing ribs (4), base plate (5), positioning seat (6), clamping cylinder (9), supporting column (12), rotating spindle (16), rotating connecting plate (19), cantilever (20), plasma cutting head (24), bending cylinder (22), drilling spindle head (25), and electric telescopic rod (10), characterized in that: The main frame (1) has four fixed support feet (2) at its bottom corners. The main frame (1) has horizontally fixed reinforcing ribs (4) inside. The upper surface of the main frame (1) is fully covered with cold-rolled steel plates (3). The center of the cold-rolled steel plates (3) is fixedly connected to the base plate (5). The upper surface of the base plate (5) is fixedly connected to a positioning seat (6). The left and right sides of the positioning seat (6) are hinged to movable clamping plates (7) via movable shafts (8). The end of the movable clamping plate (7) away from the positioning seat (6) is equipped with a clamping cylinder (9). The movable shaft (8) is installed on the top of the base plate (5). A support column (12) is erected on the main frame (1) and located outside the base plate (5). A rotating bearing seat (14) is fixedly connected to its top. A rotating main shaft (16) is coaxially inserted inside the seat. A rotating motor (17) is equipped on the rotating main shaft (16). A rotating motor (17) is fixedly connected to the upper end of the rotating main shaft (16). The connecting plate (19) has three cantilever arms (20). The bottom surface of the rotating connecting plate (19) is uniformly connected to the three cantilever arms (20) along the circumference. The ends of the three cantilever arms (20) away from the rotating connecting plate (19) are respectively equipped with a plasma cutting head (24), a bending cylinder and bending pressure head assembly, and a drilling spindle head and drill bit assembly. The bending cylinder and bending pressure head assembly includes a bending cylinder (22) and a bending pressure head (23) fixed to its extension end. The drilling spindle head and drill bit assembly includes a drilling spindle head (25) and a drill bit (26) installed at its output end. The inner side of the support column (12) is fixedly connected to an electric telescopic rod fixing frame (11). An electric telescopic rod (10) is installed on the electric telescopic rod fixing frame (11). The drilling spindle head (25) is a servo spindle head with its own vertical feed mechanism. Its feed mechanism is a ball screw feed structure.

2. The integrated processing equipment for cutting, bending, and drilling of steel structural components for iron towers according to claim 1, characterized in that: The supporting columns (12) are arranged in a square on the outside of the base plate (5). The top of each supporting column (12) is fixedly connected to the lower surface of the connecting plate (13). The upper surface of the connecting plate (13) is fixedly connected to the lower surface of the rotating bearing seat (14). The rotating bearing seat (14) and the rotating spindle (16) are interference fit.

3. The integrated processing equipment for cutting, bending, and drilling of steel structural components for iron towers according to claim 1, characterized in that: One end of each cantilever (20) is fully welded to the rotating connecting plate (19). The plasma cutting head (24) is bolted to the lower side of the corresponding cantilever (20) via an adjustable bracket (21). The bending cylinder (22) is bolted to the upper surface of the corresponding cantilever (20). The bending pressure head (23) is fixedly connected to the telescopic end of the bending cylinder (22). The drill bit (26) is detachably mounted on the output end of the drilling spindle head (25). The adjustable bracket (21) is a multi-degree-of-freedom adjustment bracket with a horizontal adjustment slider and a vertical adjustment screw, and it can finely adjust the position of the plasma cutting head (24).

4. The integrated processing equipment for cutting, bending, and drilling of steel structural components for iron towers according to claim 1, characterized in that: The movable clamp (7) has an anti-slip rubber pad attached to the side facing the positioning seat (6). The movable clamp (7) rotates around the movable shaft (8). The telescopic end of the clamping cylinder (9) is hinged to the movable clamp (7).

5. The integrated processing equipment for cutting, bending, and drilling of steel structural components for iron towers according to claim 1, characterized in that: The cylinder of the electric telescopic rod (10) is bolted to the electric telescopic rod fixing frame (11), and the axis of the electric telescopic rod (10) is parallel to the upper surface of the base plate (5).

6. The integrated processing equipment for cutting, bending, and drilling of steel structural components for iron towers according to claim 1, characterized in that: The lower surface of the rotary bearing housing (14) is provided with multiple proximity sensors (18) and multiple limiting pins (15). The proximity sensors (18) are evenly distributed around the circumference of the lower bottom surface of the rotary bearing housing (14). The limiting pins (15) are set one-to-one with the multiple proximity sensors (18). The extension and retraction direction of the limiting pins (15) is parallel to the axis of the rotary spindle (16). A positioning block (27) is fixedly connected to one end of the cantilever (20) near the rotary bearing housing (14). A limiting hole (28) adapted to the limiting pin (15) is opened on the cantilever (20). The positioning block (27) cooperates with the proximity sensor (18) to realize station detection. The limiting pin (15) cooperates with the limiting hole (28) to realize station mechanical locking.

7. The integrated processing equipment for cutting, bending, and drilling of steel structural components for iron towers according to claim 3, characterized in that: The nozzle of the plasma cutting head (24) is vertically downward, the telescopic end of the bending cylinder (22) is vertically downward and passes through the cantilever (20) and is fixedly connected to the bending pressure head (23), the drilling spindle head (25) is fixedly connected to the outer end flange of the corresponding cantilever (20), the axis of the drill bit (26) is vertically downward, the positioning seat (6) is a U-shaped groove positioning seat, and the inner wall of its U-shaped groove is detachably equipped with a bending lower die (29). The bending lower die (29) and the bending pressure head (23) cooperate vertically to realize the bending operation. The bending lower die (29) is a replaceable modular structure.

8. A method for integrated cutting, bending, and drilling of steel structural components for iron towers, implemented using the integrated cutting, bending, and drilling equipment for steel structural components for iron towers as described in any one of claims 1-7, characterized in that: Includes the following steps: Step 1, loading and positioning: Place the steel structure of the tower in the U-shaped groove of the positioning seat (6), assemble the appropriate bending die (29) according to the bending requirements of the workpiece, start the clamping cylinder (9), the telescopic end of the clamping cylinder (9) extends and pushes the movable clamping plate (7) to rotate around the movable shaft (8) until the anti-slip rubber pads of the movable clamping plates (7) on both sides are tightly attached to the outer wall of the steel structure, and the clamping and fixing of the steel structure is completed. At the same time, adjust the telescopic amount of the electric telescopic rod (10) according to the processing height of the steel structure, so that the telescopic end of the electric telescopic rod (10) abuts against the top of the steel structure to achieve auxiliary positioning. Step 2: The workstation rotates and the rotary motor (17) is started. The rotary motor (17) drives the rotary spindle (16) to rotate in the rotary bearing seat (14). The rotary spindle (16) drives the rotary connecting plate (19) and the three cantilever arms (20) to rotate synchronously. When the proximity sensor (18) detects the positioning block (27) of the corresponding cantilever arm (20), the rotary motor (17) stops working, and the limit pin (15) extends out and inserts into the limit hole (28) of the cantilever arm (20), thus completing the precise alignment of the first processing station. Step 3, process processing: If the position is the plasma cutting head (24) station, adjust the adjustable bracket (21) to make the distance between the plasma cutting head (24) and the workpiece match, and start the plasma cutting head (24) to perform the preset size cutting operation on the steel structure. After cutting, the rotary motor (17) is restarted, the limit pin (15) is released, and the machine is rotated to the bending cylinder (22) and bending head (23) position and the precise positioning is completed. The downward stroke and holding time of the bending cylinder (22) are adjusted according to the preset bending angle. The bending cylinder (22) is started, and the bending cylinder (22) pushes the bending head (23) to move vertically downward. It cooperates with the bending die (29) to perform a preset angle bending operation on the steel structure. After bending, the machine is rotated to the drilling spindle head (25) and drill bit (26) position and the precise positioning is completed. The rotation speed of the drilling spindle head (25) and the downward feed speed of the ball screw feed structure are adjusted according to the preset hole diameter and hole position. The drilling spindle head (25) is started, and the drilling spindle head (25) drives the drill bit (26) to rotate at high speed and feed in the vertical direction to perform drilling operation on the steel structure. Step 4: Unloading and receiving the parts. After the three processes of cutting, bending and drilling are completed, shut down all processing parts, start the clamping cylinder (9) to retract its telescopic end, and rotate the movable clamp (7) around the movable shaft (8) in the opposite direction to release the clamping of the steel structure. At the same time, adjust the telescopic end of the electric telescopic rod (10) to retract and release the auxiliary positioning. Finally, remove the processed steel structure from the positioning seat (6) to complete the entire processing process.

9. The integrated processing method for cutting, bending, and drilling of steel structural components for iron towers according to claim 8, characterized in that: In step three, the cutting speed of the plasma cutting head (24), the downward stroke and holding time of the bending cylinder (22), and the rotation speed and downward feed speed of the drilling spindle head (25) are all preset and adjusted according to the material and specifications of the steel structure of the iron tower. In each process, the electric telescopic rod (10) always maintains auxiliary positioning of the top of the steel structure to prevent displacement of the steel structure. During the rotation of the rotating connecting plate (19) driving the cantilever (20) to rotate, the three cantilever (20) always remain horizontal, and the working ends of the plasma cutting head (24), bending pressure head (23), and drill bit (26) are always facing the center position of the positioning seat (6).

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