Double-shaft-shoulder friction stir welding and milling integrated tool

Abstract

The invention relates to the technical field of friction welding, in particular to a double-shaft-shoulder friction stir welding and milling integrated tool which comprises an operation plate, a fixing assembly is installed at the top of the operation plate, a supporting frame is fixedly connected to the top of the operation plate, a welding mechanism is installed in the supporting frame, and a cooling mechanism is installed in the supporting frame. The cooling mechanism is located at the rear end of the welding mechanism, and the welding and milling mechanism is installed in the supporting frame and located between the supporting frame and the cooling mechanism. The welding mechanism comprises a driving motor, a driving shaft, a stirring head and a first gear. By arranging the cooling mechanism, the welding heat dissipation problem is solved, the joint quality and the tool service life are guaranteed, effective fixing and convenient operation of steel are achieved through the fixing assembly, the equipment compatibility, the machining precision, the operation convenience and the product quality are improved, the welding stability, reliability and production efficiency are overall improved, and the cost and the risk are reduced; the method has obvious comprehensive advantages.

Description

Technical Field

[0001] The invention relates to the technical field of friction welding, and in particular to a double-shoulder friction stir welding and milling integrated tool. Background Art

[0002] With the development of society, the application of stir friction welding in the field of industrial manufacturing has become increasingly critical. Double-shoulder stir friction welding, with its unique advantages, plays an important role in many high-end manufacturing industries such as aerospace, automobile manufacturing, and ship engineering. Double-shoulder stir friction welding can achieve high-quality welding joints, effectively improve the overall performance and reliability of structural parts, reduce structural weight, and thus improve the fuel efficiency and flight performance of aircraft.

[0003] Chinese invention patent CN113997075B discloses a dual-shoulder friction stir welding and milling tool. The dual-shoulder friction stir welding and milling tool comprises: a frame, an adjustment component is installed on the frame, and a fixedly connected mounting frame is installed below the adjustment component, and a power motor and a rotating head are arranged in the mounting frame; a cleaning component, and the cleaning component is arranged on the mounting frame. The dual-shoulder friction stir welding and milling tool provided by the present invention, when the cleaning motor drives the coarse cleaning cylinder and the fine cleaning cylinder on both sides to rotate simultaneously through the driving gear and the transmission gear, the coarse cleaning cylinder will first cut the sharper barbs, and the fine cleaning cylinder will grind the weld after cutting, so as to complete the cleaning of the barbs on both sides of the metal plate welding gap, which can not only reduce the difficulty of the later staff to a certain extent, but also greatly reduce the phenomenon of the welding barbs scratching the fingers of the staff.

[0004] However, the above patent does not directly dissipate heat during the welding process, which will cause the temperature in the welding area to be too high. On the one hand, excessively high temperatures may cause changes in the microstructure of the welded joint, such as grain growth, thereby reducing the strength and toughness of the joint and affecting the welding quality. Especially for some high-end application scenarios with stringent requirements on mechanical properties, such as the welding of aircraft engine blades, even a slight performance degradation may cause serious safety hazards. On the other hand, continuous high temperatures will also accelerate the wear of welding tools, shorten the service life of tools, increase production costs and equipment maintenance frequency, reduce production efficiency, and are not conducive to the needs of large-scale industrial production. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a double-shoulder friction stir welding and milling integrated tool.

[0006] In order to achieve the above-mentioned object, the present invention adopts the following technical scheme: a dual-shoulder friction stir welding and milling integrated tool, comprising an operating panel, a fixing assembly is installed on the top of the operating panel, a support frame is fixedly connected to the top of the operating panel, a welding mechanism is installed inside the support frame, a cooling mechanism is installed inside the support frame, the cooling mechanism is located at the rear end of the welding mechanism, a welding and milling mechanism is installed inside the support frame, and the welding and milling mechanism is located between the support frame and the cooling mechanism;

[0007] The welding mechanism includes a driving motor, a driving shaft, a stirring head and a first gear, wherein the driving motor is fixedly mounted inside the support frame and located on the top of the operation panel, the driving shaft is fixedly mounted on the bottom of the driving motor, the stirring head is fixedly mounted on the outer wall of the driving shaft, and the first gear is fixedly connected to the outer wall of the first gear;

[0008] The cooling mechanism includes a sealing cover, a first rotating shaft, a paddle, a second gear, a conical air inlet block and a conical air exhaust block. The sealing cover is fixedly installed inside the support frame and is located on the top of the operating panel. The first rotating shaft is movably installed inside the sealing cover. The paddle is fixedly connected to the outer wall of the first rotating shaft and is located inside the sealing cover. The second gear is fixedly connected to the outer wall of the first rotating shaft and meshes with the drive shaft. The conical air inlet block is fixedly connected to the air inlet end of the sealing cover. The conical exhaust block has two fixed connections to the air outlet end of the sealing cover. The two conical exhaust blocks are successively located at the upper and lower ends of the operating panel.

[0009] Further: the cooling mechanism also includes an air inlet pipe and an air exhaust pipe, the air inlet pipe is fixedly connected between the sealing cover and the conical air inlet block, the air inlet end of the exhaust pipe is fixedly connected to the air outlet end of the sealing cover, the air outlet end of the exhaust pipe is fixedly connected to two air outlet ducts, and the two air outlet ducts are fixedly connected to two conical exhaust blocks.

[0010] Further: the fixed assembly includes a bidirectional screw, a clamping block, an ear plate, a roller, a turning handle and a sliding rod. The bidirectional screw is movably installed at the bottom of the operating panel. The clamping block has two sliding parts installed on the top of the operating panel. The ear plate has two fixed connections at the two ends of the bottom of the clamping block. The roller has multiple movably installed inside the clamping block. The sliding rod is fixedly connected to the bottom of one end of the operating panel away from the bidirectional screw. A screw hole is opened inside the ear plate close to the side of the bidirectional screw, and a sliding hole is opened inside the ear plate close to the side of the sliding rod. The turning handle is fixedly connected to the outer wall of the bidirectional screw.

[0011] Further: the welding and milling mechanism includes a sleeve, a second rotating shaft, a cleaning cylinder, a limit block, a limit rod, a spring and a baffle, the sleeve has two fixedly installed inside the support frame and located at the upper and lower ends of the operating panel, the sleeve is located at the rear end of the driving shaft, the second rotating shaft is slidably installed inside the sleeve, the cleaning cylinder is fixedly connected to the outer wall of the second rotating shaft, the limit block has two fixedly connected on both sides of the outer wall of the sleeve, the limit rod has two fixedly connected on both sides of the outer wall of the cleaning cylinder, the limit rod is slidably installed inside the limit block, the spring is fixedly installed between the sleeve and the cleaning cylinder, and the baffle is fixedly connected to the end of the second rotating shaft away from the cleaning cylinder.

[0012] Further: the welding and milling mechanism also includes a third gear, a belt groove, a support shaft, a pulley and a driving belt. The third gear is fixedly connected to the outer wall of the top sleeve and meshes with the first gear. The belt groove is opened on the outer wall of the sleeve. The support shaft is movably installed inside the support frame and is located on the outer wall of the operating panel. The pulley has two fixed connections at the upper and lower ends of the support shaft. The driving belt has two fixed installations in sequence between the upper belt groove and the pulley and between the lower belt groove and the pulley.

[0013] Further: the support frame includes a support rod, a first mounting seat, a second mounting seat, and a bearing. The support rod has two fixed connections at the upper and lower ends of the operating panel. The first mounting seat is fixedly installed inside the support rod, and the second mounting seat is fixedly connected to the outer wall of the operating panel. Three bearings are fixedly installed inside the first mounting seat at the top, and two bearings are fixedly installed inside the first mounting seat at the bottom. The first bearing is fixedly installed inside the second mounting seat. The first rotating shaft is fixedly installed in the bearing inside the first mounting seat at the top, the drive shaft and the sleeve are fixedly installed in the bearings inside the upper and lower first mounting seats, and the support shaft is fixedly installed in the bearing inside the second mounting seat.

[0014] Further: the support frame also includes a connecting rod, the connecting rod has two fixed connections to the top of the top first mounting seat, the sealing cover is fixedly connected to the top of the connecting rod, and the driving motor is fixedly installed on the top of the top first mounting seat.

[0015] Further: a slot is provided inside the operating panel, and the welding mechanism, cooling mechanism and welding and milling mechanism are all located inside the slot.

[0016] Further: the bottom of the operating panel is fixedly connected with supporting legs, and there are four supporting legs distributed in a rectangular shape.

[0017] The present invention has the following beneficial effects:

[0018] 1. Compared with the prior art, by setting a drive shaft, a first gear and a cooling mechanism, when the drive shaft rotates, the meshing of the first gear and the second gear drives the first rotating shaft to rotate at high speed, thereby causing the blades to rotate, generating negative pressure in the sealing cover, and the outside air is sucked in through the conical air inlet block, and then discharged by the exhaust pipe and the conical exhaust block, blowing air to the upper and lower ends of the steel to dissipate heat. In this way, the heat generated during the welding process can be taken away in time, and the problems of joint tissue degradation and excessive tool wear caused by excessive temperature in the welding area can be avoided, the welding quality can be guaranteed, the tool life can be extended, and the production efficiency can be improved. It effectively solves the heat dissipation problem in the welding process, meets the strict requirements of the high-end manufacturing industry for welding quality and stability, and solves the problems that the prior art lacks direct heat dissipation measures in the welding process, resulting in reduced quality of welding joints, increased tool wear, and reduced production efficiency. It improves the stability and reliability of welding, reduces production costs and safety risks, and provides a strong guarantee for high-quality welding production.

[0019] 2. Compared with the prior art, by setting a fixing component, when in use, the handle on the bidirectional screw is turned, and the bidirectional screw rotates to make the two clamping blocks approach or move away from each other under the guidance of the slide bar, and the rollers in the clamping blocks clamp the two sides of the steel. The rollers can clamp the steel without hindering its forward and backward parallel movement. This design can quickly and stably fix steel of different widths, ensure the accurate position of the steel during welding and subsequent processing, avoid affecting the welding quality and processing accuracy due to the displacement of the steel, and at the same time improve the operating convenience and adaptability of the equipment, which is suitable for the processing of steel of various specifications, optimizes the entire welding process, and improves production efficiency and product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention from a first viewing angle;

[0021] Figure 2 It is a schematic diagram of the structure of the second viewing angle of the present invention;

[0022] Figure 3 It is a schematic diagram of the exploded structure of the fixing assembly in the present invention;

[0023] Figure 4 It is an enlarged structural schematic diagram of the welding mechanism and the cooling mechanism in the present invention;

[0024] Figure 5 It is an enlarged structural schematic diagram of the welding mechanism and the welding and milling mechanism in the present invention;

[0025] Figure 6 It is a schematic diagram of the cross-sectional structure of some parts of the welding and milling mechanism in the present invention;

[0026] Figure 7 It is an enlarged structural schematic diagram of the support frame in the present invention;

[0027] Figure 8 for Figure 7 The enlarged structural diagram at A in the middle;

[0028] Fig. 9 for Figure 7 Enlarged structural diagram at B in the middle.

[0029] Legend:

[0030] 1. Operation panel; 101. Slot; 2. Fixing assembly; 201. Bidirectional screw; 202. Clamping block; 203. Ear plate; 204. Rolling; 205. Turning handle; 206. Sliding rod; 3. Support frame; 301. Support rod; 302. First mounting seat; 303. Second mounting seat; 304. Bearing; 305. Connecting rod; 4. Welding mechanism; 401. Driving motor; 402. Driving shaft; 403. Stirring head; 404. First gear; 5. Cooling mechanism; 501. Sealing cover; 5 02. First rotating shaft; 503. Paddle; 504. Second gear; 505. Air inlet pipe; 506. Conical air inlet block; 507. Exhaust pipe; 508. Conical exhaust block; 6. Welding and milling mechanism; 601. Sleeve; 602. Third gear; 603. Second rotating shaft; 604. Cleaning cylinder; 605. Limit block; 606. Limit rod; 607. Spring; 608. Baffle; 609. Belt groove; 610. Support shaft; 611. Pulley; 612. Drive belt; 7. Support leg. DETAILED DESCRIPTION

[0031] Reference Figure 1-9The present invention provides a dual-shoulder friction stir welding and milling integrated tool: comprising an operating panel 1, the operating panel 1 serving as the basic bearing platform of the entire tool, a fixing component 2 being installed on the top of the operating panel 1, the fixing component 2 being used to fix the steel to be welded to ensure its stable position during processing, a supporting frame 3 being fixedly connected to the top of the operating panel 1, a welding mechanism 4 being installed inside the supporting frame 3, the welding mechanism 4 being the core part for realizing friction stir welding of steel, a cooling mechanism 5 being installed inside the supporting frame 3, the cooling mechanism 5 being located at the rear end of the welding mechanism 4, the cooling mechanism 5 being responsible for dissipating heat to the steel during welding to prevent overheating of the steel from affecting welding quality and performance, a welding and milling mechanism 6 being installed inside the supporting frame 3, The milling mechanism 6 is located between the support frame 3 and the cooling mechanism 5. The welding milling mechanism 6 is used to clean the welding slag generated during the welding process and can perform certain milling processing; the welding mechanism 4 includes a driving motor 401, a driving shaft 402, a stirring head 403 and a first gear 404. The driving motor 401 is fixedly installed inside the supporting frame 3 and is located on the top of the operating panel 1. It can stably drive the stirring head 403 to rotate at a high speed. The driving shaft 402 is fixedly installed at the bottom of the driving motor 401. The driving shaft 402 is tightly connected to the output shaft of the driving motor 401 to ensure the high efficiency of power transmission. The stirring head 403 is fixedly installed on the outer wall of the driving shaft 402. The stirring head 403 generates sufficient friction and heat when rotating. The friction stir welding of steel is performed, the first gear 404 is fixedly connected to the outer wall of the first gear 404, the first gear 404 is used to transmit power, and cooperates with other gears to realize the coordinated work of different mechanisms; the cooling mechanism 5 includes a sealing cover 501, a first rotating shaft 502, a paddle 503, a second gear 504, a conical air inlet block 506 and a conical air exhaust block 508, the sealing cover 501 is fixedly installed inside the support frame 3 and located on the top of the operating panel 1, the sealing cover 501 is fixedly installed inside the support frame 3 and located on the top of the operating panel 1 to prevent air leakage and ensure the stability of the internal negative pressure environment, the first rotating shaft 502 is movably installed inside the sealing cover 501, and the paddle 503 is fixedly connected to the first rotating shaft 502. The outer wall of the rotating shaft 502 is located inside the sealing cover 501, and the shape and angle of the blade 503 can effectively generate negative pressure during rotation. The second gear 504 is fixedly connected to the outer wall of the first rotating shaft 502 and meshes with the driving shaft 402, and power transmission is achieved through gear meshing. The conical air inlet block 506 is fixedly connected to the air inlet end of the sealing cover 501. The structure of the conical air inlet block 506 is conducive to guiding the outside air to smoothly enter the sealing cover 501. The conical exhaust block 508 has two air outlet ends fixedly connected to the sealing cover 501. The two conical exhaust blocks 508 are successively located at the upper and lower ends of the operating panel 1. The conical exhaust block 508 can accurately blow the cooled air to the upper and lower ends of the steel to achieve efficient heat dissipation.

[0032] The cooling mechanism 5 also includes an air inlet pipe 505 and an air exhaust pipe 507. The air inlet pipe 505 is fixedly connected between the sealing cover 501 and the conical air inlet block 506 to ensure that the air enters the sealing cover 501 smoothly. The air inlet end of the exhaust pipe 507 is fixedly connected to the air outlet end of the sealing cover 501. The air outlet end of the exhaust pipe 507 is fixedly connected to two air outlet ducts. The two air outlet ducts are fixedly connected to two conical exhaust blocks 508. The exhaust pipe 507 and the air outlet duct are tightly connected to ensure that the cooling air can be accurately delivered to the conical exhaust block 508.

[0033] The fixing assembly 2 includes a bidirectional screw rod 201, a clamping block 202, an ear plate 203, a rolling pull 204, a turning handle 205 and a sliding rod 206. The bidirectional screw rod 201 is movably installed at the bottom of the operating panel 1 to achieve the precise movement of the clamping block 202. The clamping block 202 has two sliding parts installed on the top of the operating panel 1. The ear plate 203 has two fixed connections at the bottom ends of the clamping block 202. The ear plate 203 is used to connect the bidirectional screw rod 201 and the sliding rod 206. The rolling pull 204 has multiple movably installed inside the clamping block 202, which can make the steel material be clamped. The two-way screw rod 201 can be moved parallel to the two-way screw rod 201, and the two-way screw rod 201 can be moved parallel to the two-way screw rod 201. .... The two-way screw rod 201 can be moved parallel to the two-way screw rod 201. The two-way screw rod 201 can be moved parallel to the two-way screw rod 201. The two-way screw rod 201 can be moved parallel to the two-way screw rod 201. The two-way screw rod 201 can be moved parallel to the two-way screw rod 201. The two-way screw rod 201

[0034] The welding and milling mechanism 6 includes a sleeve 601, a second rotating shaft 603, a cleaning barrel 604, a limit block 605, a limit rod 606, a spring 607 and a baffle 608. The sleeve 601 has two fixedly installed inside the support frame 3 and located at the upper and lower ends of the operating panel 1. The sleeve 601 provides an installation basis and rotation support for the second rotating shaft 603 and the cleaning barrel 604. The sleeve 601 is located at the rear end of the driving shaft 402. The second rotating shaft 603 is slidably installed inside the sleeve 601. The second rotating shaft 603 can stably move up and down in the sleeve 601. The cleaning barrel 604 is fixedly connected to the outer wall of the second rotating shaft 603. The material and surface shape of the cleaning barrel 604 can effectively clean the welding slag. The positioning block 605 has two fixed connections on both sides of the outer wall of the sleeve 601, and the limit block 605 is used to limit the moving range of the limit rod 606. The limit rod 606 has two fixed connections on both sides of the outer wall of the cleaning cylinder 604. The limit rod 606 is slidably installed inside the limit block 605. The limit rod 606 cooperates with the limit block 605 to realize the positioning and movement of the cleaning cylinder 604. The spring 607 is fixedly installed between the sleeve 601 and the cleaning cylinder 604. The spring 607 provides elastic force so that the cleaning cylinder 604 can adapt to steel of different thicknesses. The baffle 608 is fixedly connected to one end of the second rotating shaft 603 away from the cleaning cylinder 604, and the baffle 608 is used to prevent the second rotating shaft 603 from slipping out of the sleeve 601.

[0035] The welding and milling mechanism 6 also includes a third gear 602, a belt groove 609, a support shaft 610, a pulley 611 and a driving belt 612. The third gear 602 is fixedly connected to the outer wall of the top sleeve 601 and meshes with the first gear 404. Power is transmitted through gear meshing. The belt groove 609 is opened on the outer wall of the sleeve 601. The support shaft 610 is movably installed inside the support frame 3 and is located on the outer wall of the operating panel 1. The pulley 611 has two fixed connections at the upper and lower ends of the support shaft 610. The driving belt 612 has two fixed installations in sequence between the upper belt groove 609 and the pulley 611 and between the lower belt groove 609 and the pulley 611. The power transmission of the bottom sleeve 601 is realized through belt transmission, so that the upper and lower cleaning cylinders 604 can rotate synchronously.

[0036] The support frame 3 includes a support rod 301, a first mounting seat 302, a second mounting seat 303, and a bearing 304. The support rod 301 has two upper and lower ends fixedly connected to the operating panel 1. The first mounting seat 302 is fixedly installed inside the support rod 301, and the second mounting seat 303 is fixedly connected to the outer wall of the operating panel 1. The mounting seat provides an installation position for the bearing 304. Three bearings 304 are fixedly installed inside the top first mounting seat 302, two bearings 304 are fixedly installed inside the bottom first mounting seat 302, and the first bearing 304 is fixedly installed inside the second mounting seat 303. The first rotating shaft 502 is fixedly installed in the bearing 304 inside the top first mounting seat 302, the driving shaft 402 and the sleeve 601 are fixedly installed in the bearings 304 inside the upper and lower first mounting seats 302, and the support shaft 610 is fixedly installed in the bearing 304 inside the second mounting seat 303. The bearings 304 ensure the flexible rotation of each shaft and reduce friction and wear.

[0037] The support frame 3 also includes a connecting rod 305, which is used to connect the sealing cover 501 and the first mounting seat 302. The connecting rod 305 has two fixed connections to the top of the top first mounting seat 302, the sealing cover 501 is fixedly connected to the top of the connecting rod 305, and the drive motor 401 is fixedly installed on the top of the top first mounting seat 302.

[0038] A slot 101 is provided inside the operating panel 1, and the welding mechanism 4, the cooling mechanism 5 and the welding and milling mechanism 6 are all located inside the slot 101. The size and shape of the slot 101 can accommodate the welding mechanism 4, the cooling mechanism 5 and the welding and milling mechanism 6. The welding mechanism 4, the cooling mechanism 5 and the welding and milling mechanism 6 are all located inside the slot 101, making the entire tool structure compact.

[0039] The bottom of the operating panel 1 is fixedly connected with supporting legs 7. There are four supporting legs 7 distributed in a rectangular shape. The supporting legs 7 can stably support the operating panel 1 so that the tool remains stable during operation.

[0040] Working principle: When in use, place two steel materials flush on the top of the operating panel 1, align the joints of the two steel materials and locate them at the midline of the operating panel 1, and then control the rotation of the bidirectional screw rod 201 by turning the handle 205 to make the two clamping blocks 202 approach each other, and clamp the two sides of the two steel materials through the rollers 204 inside the two clamping blocks 202. Due to the setting of the rollers 204, the two steel materials can be clamped without affecting the parallel movement of the steel materials forward and backward.

[0041] Then, the driving motor 401 is turned on, and the driving shaft 402 is driven to rotate by the driving motor 401 , and the stirring head 403 is driven to rotate at a high speed at the same time, and then the steel plate is pushed to move, and the two steel materials are stirred and welded together by the stirring head 403 .

[0042] While the driving shaft 402 rotates, the top sleeve 601 is driven to rotate at high speed through the cooperation of the first gear 404 and the sleeve 601. At the same time, through the connection between the limit block 605 and the limit rod 606, the top cleaning cylinder 604 is driven to rotate to clean the welding slag on the top of the steel.

[0043] When the top sleeve 601 rotates, the rotational power is transmitted to the bottom sleeve 601 through the cooperation of the belt groove 609, the support shaft 610, the pulley 611 and the drive belt 612, so that the bottom cleaning cylinder 604 rotates synchronously to clean the welding slag at the bottom of the steel plate.

[0044] In order to allow the two cleaning barrels 604 to adapt to the thickness of steel plates of different sizes, through the elastic cooperation of the spring 607 and the limiting cooperation between the limit block 605 and the limit rod 606, when welding steel plates of different thicknesses, the two cleaning barrels 604 can be tightly attached to the upper and lower ends of the steel plate.

[0045] While the drive shaft 402 rotates, the first rotating shaft 502 is driven to rotate at high speed through the cooperation of the first gear 404 and the second gear 504, and the paddle 503 is driven to rotate at the same time, so that negative pressure is generated inside the sealing cover 501, and then the outside air is sucked into the sealing cover 501 through the conical air inlet block 506, and then the air passes through the exhaust pipe 507 and is discharged from the two conical exhaust blocks 508, blowing air to the upper and lower ends of the steel to dissipate heat.

[0046] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A dual-shoulder friction stir welding and milling integrated tool, comprising an operating panel (1), characterized in that: A fixing assembly (2) is installed on the top of the operating panel (1), a support frame (3) is fixedly connected to the top of the operating panel (1), a welding mechanism (4) is installed inside the support frame (3), a cooling mechanism (5) is installed inside the support frame (3), the cooling mechanism (5) is located at the rear end of the welding mechanism (4), a welding and milling mechanism (6) is installed inside the support frame (3), and the welding and milling mechanism (6) is located between the support frame (3) and the cooling mechanism (5); The welding mechanism (4) comprises a driving motor (401), a driving shaft (402), a stirring head (403) and a first gear (404); the driving motor (401) is fixedly mounted inside the support frame (3) and located on the top of the operating panel (1); the driving shaft (402) is fixedly mounted on the bottom of the driving motor (401); the stirring head (403) is fixedly mounted on the outer wall of the driving shaft (402); and the first gear (404) is fixedly connected to the outer wall of the first gear (404); The cooling mechanism (5) comprises a sealing cover (501), a first rotating shaft (502), a paddle (503), a second gear (504), a conical air inlet block (506) and a conical air exhaust block (508); the sealing cover (501) is fixedly mounted inside the support frame (3) and is located at the top of the operating panel (1); the first rotating shaft (502) is movably mounted inside the sealing cover (501); the paddle (503) is fixedly connected to the outer wall of the first rotating shaft (502) and is located inside the sealing cover (501); the second gear (504) is fixedly connected to the outer wall of the first rotating shaft (502) and is meshed with the driving shaft (402); the conical air inlet block (506) is fixedly connected to the air inlet end of the sealing cover (501); the conical air exhaust block (508) has two air outlet ends fixedly connected to the sealing cover (501); and the two conical air exhaust blocks (508) are sequentially located at the upper and lower ends of the operating panel (1).

2. A dual-shoulder friction stir welding and milling integrated tool according to claim 1, characterized in that: The cooling mechanism (5) further comprises an air inlet pipe (505) and an air exhaust pipe (507); the air inlet pipe (505) is fixedly connected between the sealing cover (501) and the conical air inlet block (506); the air inlet end of the air exhaust pipe (507) is fixedly connected to the air outlet end of the sealing cover (501); the air outlet end of the air exhaust pipe (507) is fixedly connected to two air outlet ducts; the two air outlet ducts are fixedly connected to two conical air exhaust blocks (508).

3. The dual-shoulder friction stir welding and milling integrated tool according to claim 1, characterized in that: The fixing assembly (2) comprises a bidirectional screw (201), a clamping block (202), an ear plate (203), a rolling pull (204), a turning handle (205) and a sliding rod (206); the bidirectional screw (201) is movably mounted on the bottom of the operating panel (1); the clamping block (202) has two slidingly mounted on the top of the operating panel (1); the ear plate (203) has two fixedly connected to the two ends of the bottom of the clamping block (202); the rolling pull (204) has a plurality of movably mounted inside the clamping block (202); the sliding rod (206) is fixedly connected to the bottom of one end of the operating panel (1) away from the bidirectional screw (201); a screw hole is provided inside the ear plate (203) close to the bidirectional screw (201); a sliding hole is provided inside the ear plate (203) close to the sliding rod (206); and the turning handle (205) is fixedly connected to the outer wall of the bidirectional screw (201).

4. The dual-shoulder friction stir welding and milling integrated tool according to claim 1, characterized in that: The welding and milling mechanism (6) comprises a sleeve (601), a second rotating shaft (603), a cleaning cylinder (604), a stop block (605), a stop rod (606), a spring (607) and a baffle (608); the sleeve (601) has two fixed parts installed inside the support frame (3) and located at the upper and lower ends of the operating panel (1); the sleeve (601) is located at the rear end of the driving shaft (402); the second rotating shaft (603) is slidably installed inside the sleeve (601); the cleaning cylinder (604) is fixed The stop block (605) is connected to the outer wall of the second rotating shaft (603), the stop block (605) has two fixed connections on both sides of the outer wall of the sleeve (601), the stop rod (606) has two fixed connections on both sides of the outer wall of the cleaning cylinder (604), the stop rod (606) is slidably mounted inside the stop block (605), the spring (607) is fixedly mounted between the sleeve (601) and the cleaning cylinder (604), and the baffle (608) is fixedly connected to one end of the second rotating shaft (603) away from the cleaning cylinder (604).

5. The dual-shoulder friction stir welding and milling integrated tool according to claim 4, characterized in that: The welding and milling mechanism (6) further comprises a third gear (602), a belt groove (609), a support shaft (610), a pulley (611) and a driving belt (612); the third gear (602) is fixedly connected to the outer wall of the top sleeve (601) and meshes with the first gear (404); the belt groove (609) is provided on the outer wall of the sleeve (601); the support shaft (610) is movably mounted inside the support frame (3) and located on the outer wall of the operating panel (1); the pulley (611) has two fixedly connected upper and lower ends of the support shaft (610); and the driving belt (612) has two fixedly mounted successively between the upper belt groove (609) and the pulley (611) and between the lower belt groove (609) and the pulley (611).

6. The dual-shoulder friction stir welding and milling integrated tool according to claim 5, characterized in that: The support frame (3) comprises a support rod (301), a first mounting seat (302), a second mounting seat (303), and a bearing (304); the support rod (301) has two upper and lower ends fixedly connected to the operating panel (1); the first mounting seat (302) is fixedly mounted inside the support rod (301); the second mounting seat (303) is fixedly connected to the outer wall of the operating panel (1); three bearings (304) are fixedly mounted inside the first mounting seat (302) at the top; and the first mounting seat (303) at the bottom is fixedly mounted on the inner wall of the operating panel (1). 02), two bearings (304) are fixedly installed inside the second mounting seat (303), a first bearing (304) is fixedly installed inside the second mounting seat (303), the first rotating shaft (502) is fixedly installed in the bearing (304) inside the top first mounting seat (302), the driving shaft (402) and the sleeve (601) are fixedly installed in the bearings (304) inside the upper and lower first mounting seats (302), and the supporting shaft (610) is fixedly installed in the bearing (304) inside the second mounting seat (303).

7. The dual-shoulder friction stir welding and milling integrated tool according to claim 6, characterized in that: The support frame (3) further comprises a connecting rod (305), wherein the connecting rod (305) has two parts fixedly connected to the top of the first top mounting seat (302), the sealing cover (501) is fixedly connected to the top of the connecting rod (305), and the driving motor (401) is fixedly mounted on the top of the first top mounting seat (302).

8. The dual-shoulder friction stir welding and milling integrated tool according to claim 1, characterized in that: A slot (101) is provided inside the operating panel (1), and the welding mechanism (4), the cooling mechanism (5) and the welding and milling mechanism (6) are all located inside the slot (101).

9. The dual-shoulder friction stir welding and milling integrated tool according to claim 1, characterized in that: The bottom of the operating panel (1) is fixedly connected to a supporting leg (7), and the supporting legs (7) have four legs distributed in a rectangular shape.

Images