Friction stir welding equipment with stable clamping structure

Abstract

The invention relates to the technical field of welding equipment, in particular to friction stir welding equipment with a stable clamping structure, which comprises a worktable, a placing table is fixedly connected to the upper end of the worktable, a front-back adjusting mechanism and a left-right adjusting mechanism are arranged in the placing table, and a first clamping assembly is arranged at the upper end of the front-back adjusting mechanism; a second clamping assembly is arranged at the upper end of the left-right adjusting mechanism, and a pressing assembly is arranged at the upper end of the second clamping assembly and used for pressing and fixing the workpiece. By arranging the front-back adjusting mechanism, the first clamping assembly, the left-right adjusting mechanism and the second clamping assembly, manual operation is not needed when a workpiece is clamped and fixed, so that the labor intensity of workers is reduced, and meanwhile, the workpiece can be stably fixed on the placing table under the cooperation of the pressing assembly.

Description

Technical Field

[0001] The invention relates to the field of welding equipment, and in particular to a friction stir welding equipment with a stable clamping structure. Background Art

[0002] Friction stir welding refers to the use of heat generated by the friction between the high-speed rotating welding tool and the workpiece to partially melt the welded material. When the welding tool moves forward along the welding interface, the plasticized material flows from the front of the welding tool to the back under the action of the rotating friction of the welding tool, and forms a dense solid phase weld under the extrusion of the welding tool. It is widely used in aerospace, automobile, rail transportation, electronic power and other fields.

[0003] When the existing friction stir welding equipment is in use, it is necessary to use a clamping mechanism to fix the two workpieces to be welded on a workbench so that the friction stir welding equipment can weld the two workpieces together. At present, when the workpieces are clamped and fixed, they are clamped and fixed manually. Although this achieves the purpose of clamping and fixing, manual operation will increase the labor intensity of the workers, thereby affecting work efficiency. Therefore, it is necessary to design a friction stir welding equipment with a stable clamping structure. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a friction stir welding device with a stable clamping structure.

[0005] In order to achieve the above-mentioned object, the present invention adopts the following technical scheme: a friction stir welding device with a stable clamping structure, comprising a workbench, a front-and-rear moving mechanism is arranged at the lower end of the workbench, a frame is arranged at the upper end of the front-and-rear moving mechanism, a left-and-right moving mechanism is arranged inside the frame, a lifting mechanism is arranged at the front end of the left-and-right moving mechanism, a friction welding body is arranged at the upper end of the lifting mechanism, and a stirring head is fixedly connected to the output end of the friction welding body;

[0006] A placing table is fixedly connected to the upper end of the workbench, and a front-and-rear adjusting mechanism and a left-and-right adjusting mechanism are arranged inside the placing table. A first clamping assembly is arranged at the upper end of the front-and-rear adjusting mechanism; a second clamping assembly is arranged at the upper end of the left-and-right adjusting mechanism, and a pressing assembly is arranged at the upper end of the second clamping assembly, and the pressing assembly is used to press and fix the workpiece.

[0007] The forward and backward moving mechanism includes a first motor, a moving rod, a bearing seat and a first screw rod. The lower end of the workbench is fixedly connected to the first motor and the bearing seat, the first screw rod is rotatably connected inside the bearing seat, the output end of the first motor is fixedly connected to the first screw rod, the circumferential surface of the first screw rod is threadedly connected to the moving rod, and the upper end of the moving rod is fixedly connected to the frame; fourth slide rails are fixedly connected to both sides of the workbench, the second slider is slidably connected to the fourth slide rail, and the second slider is fixedly connected to the frame.

[0008] The left-right moving mechanism includes a second motor, a second screw rod, a first moving seat and a first slide rail. The second screw rod is rotatably connected inside the frame, the circumferential surface of the second screw rod is threadedly connected to the first moving seat, the first moving seat is slidably connected to the first slide rail, the first slide rail is fixedly connected to the frame, the second motor is fixedly connected to the right side of the frame, and the output end of the second motor is fixedly connected to the second screw rod.

[0009] The lifting mechanism includes an electric telescopic rod, a second movable seat, a slide bar and a second slide rail, the upper end of the first movable seat is fixedly connected to the electric telescopic rod, the extended end of the electric telescopic rod is fixedly connected to the second movable seat, the upper end of the second movable seat is connected to the friction welding body, the output end of the friction welding body passes through the lower end of the second movable seat, the front end of the first movable seat is fixedly connected to the second slide rail, the second slide rail is slidably connected to the slide bar, and the slide bar is fixedly connected to the second movable seat.

[0010] The front and rear adjustment mechanism includes a third motor, a first bidirectional threaded rod, a first threaded block and a first slide groove; the first bidirectional threaded rod is rotatably connected inside the placement table; the first bidirectional threaded rod is threadedly connected to the first threaded block on the circumferential surface; two first threaded blocks are provided and are symmetrically distributed on the first bidirectional threaded rod; the internal threads of the two first threaded blocks have opposite directions; a first slide groove is provided on the upper end surface of the placement table; the first threaded block is located inside the first slide groove and is slidably connected to the first slide groove; the third motor is fixedly connected to the front end of the placement table, and the output end of the third motor is fixedly connected to the first bidirectional threaded rod.

[0011] The first clamping assembly includes a first square bar, a first adjusting screw, a first handle, an adjusting block, a clamping block and a square groove, the upper end of the first threaded block is fixedly connected to the first square bar, the first square bar is rotatably connected to the first adjusting screw, the left end of the first adjusting screw is fixedly connected to the first handle, the circumferential surface of the first adjusting screw is threadedly connected to the adjusting block, the adjusting block is slidably connected to the first square bar, the end of the adjusting block away from the inner wall of the first square bar is fixedly connected to the clamping block, and a square groove is provided on a side of the clamping block away from the adjusting block.

[0012] The left and right adjustment mechanism includes a fourth motor, a second bidirectional threaded rod, a second threaded block and a second slide groove. The second bidirectional threaded rod is rotatably connected inside the placement table, and the second threaded block is threadedly connected to the circumferential surface of the second bidirectional threaded rod. Two second threaded blocks are provided and are symmetrically distributed on the second bidirectional threaded rod. The internal threads of the two second threaded blocks are in opposite directions. A second slide groove is provided on the upper end surface of the placement table. The second threaded block is located inside the second slide groove and is slidably connected to the second slide groove. The fourth motor is fixedly connected to the front end of the placement table, and the output end of the fourth motor is fixedly connected to the second bidirectional threaded rod.

[0013] The second clamping assembly includes a second square bar, a clamping plate, a connecting rod, a moving block, a first guide rod, a spring and a connecting plate, the upper end of the second threaded block is fixedly connected to the second square bar, the second square bar is slidably connected to the connecting rod, one end of the connecting rod is fixedly connected to the clamping plate, the other end of the connecting plate is fixedly connected to the moving block, the moving block is slidably connected to the first guide rod, one end of the first guide rod is fixedly connected to the second square bar, the other end of the first guide rod is fixedly connected to the connecting plate, a spring is provided on the circumferential surface of the first guide rod, one end of the spring is fixedly connected to the moving block, and the other end of the spring is fixedly connected to the connecting plate.

[0014] The first and second sliding plates are connected along the guide rails of the second moving seat, and the second and second adjusting screws are connected along the guide rails of the second moving seat.

[0015] A square hole is formed on the side end surface of the support frame, and the transmission rod is located inside the square hole.

[0016] The present invention has the following beneficial effects:

[0017] 1. Compared with the prior art, the present technology sets a front-and-back adjustment mechanism, a first clamping assembly, a left-and-right adjustment mechanism and a second clamping assembly. When clamping and fixing the workpiece, the front-and-back adjustment mechanism drives the first clamping assembly to approach the workpiece, thereby clamping and fixing the front and back positions of the workpiece; the left-and-right adjustment mechanism drives the second clamping assembly to approach the workpiece, thereby clamping and fixing the left and right positions of the workpiece, so that when clamping and fixing the workpiece, no manual operation is required, thereby reducing the labor intensity of workers.

[0018] The cam is then moved along a line which moves the second guide rail, the second guide rail being arranged on a support frame, a transmission rod, a third movable seat, a third slide rail, a first slider, a second adjusting screw, a second handle, a second guide rod and a holding plate. After the clamping plate contacts the workpiece, as the second square bar continues to move toward the workpiece, at this time, the moving block can be driven to move in the direction of the connecting plate with the cooperation of the connecting rod. As the moving block moves, the third movable seat can be driven to move downward with the cooperation of the first slide rail and the third slide rail. At the same time, as the third movable seat moves downward, the holding plate can be driven to press the upper end of the workpiece, so that the workpiece can be stably fixed on the placing table. By rotating the second handle, the second adjusting screw can be driven to rotate and move at the same time, and then the holding plate can be driven to move stably with the cooperation of the second guide rod, so that the height of the holding plate can be changed, so as to facilitate the pressing and fixing of workpieces of different heights, thereby improving the usability of the device.

[0019] 3. Compared with the prior art, the present technology sets a first square bar, a first adjusting screw, a first handle, an adjusting block, a clamping block and a square groove. When in use, the first handle is rotated to drive the first adjusting threaded rod to rotate, thereby driving the adjusting block to slide inside the first square bar. As the adjusting block moves, the clamping block is also driven to move, thereby changing the position of the square groove to facilitate the correspondence between the square groove and the weld, which is conducive to welding the two workpieces together. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0022] Figure 3 It is a schematic diagram of the structure of the overall third viewing angle of the present invention;

[0023] Figure 4 For the present invention Figure 3 Enlarged view of part A;

[0024] Figure 5It is a schematic diagram of the structure of the overall fourth viewing angle of the present invention;

[0025] Figure 6 It is a structural schematic diagram of the placement platform of the present invention cooperating with the front-rear adjustment mechanism and the left-right adjustment mechanism;

[0026] Figure 7 It is a schematic diagram of the structure inside the first clamping assembly of the present invention;

[0027] Figure 8 It is a structural schematic diagram of the cooperation between the second clamping assembly and the pressing assembly of the present invention from a first viewing angle;

[0028] Fig. 9 It is a structural schematic diagram of the cooperation between the second clamping assembly and the pressing assembly of the present invention from a second viewing angle;

[0029] Fig.10 For the present invention Fig. 9 Enlarged view of part B.

[0030] Legend:

[0031] 1. Workbench; 2. Forward and backward moving mechanism; 201. First motor; 202. Moving rod; 203. Bearing seat; 204. First screw rod; 3. Frame; 4. Left and right moving mechanism; 401. Second motor; 402. Second screw rod; 403. First moving seat; 404. First slide rail; 5. Lifting mechanism; 501. Electric telescopic rod; 502. Second moving seat; 503. Slide bar; 504. Second slide rail; 6. Friction welding machine body; 7. Stirring head; 8. Forward and backward adjusting mechanism; 801. Third motor; 802. First bidirectional threaded rod; 803. First threaded block; 804. First slide groove; 9. First clamping assembly; 901. First square bar; 902. First adjusting screw rod; 903. First handle; 904. Adjusting block; 905. Clamping block; 906 , square groove; 10, placement table; 11, left and right adjustment mechanism; 1101, fourth motor; 1102, second two-way threaded rod; 1103, second threaded block; 1104, second slide groove; 12, second clamping assembly; 1201, second square bar; 1202, clamping plate; 1203, connecting rod; 1204, moving block; 1205, first guide rod; 1206, spring; 1207, connecting plate; 13, holding assembly; 1301, support frame; 1302, transmission rod; 1303, third moving seat; 1304, third slide rail; 1305, first slider; 1306, second adjustment screw; 1307, second handle; 1308, second guide rod; 1309, holding plate; 14, fourth slide rail; 15, second slider; 16, square hole. DETAILED DESCRIPTION

[0032] Reference Figure 1-10The present invention provides a friction stir welding device with a stable clamping structure, comprising a workbench 1, a front-rear moving mechanism 2 is arranged at the lower end of the workbench 1, a frame 3 is arranged at the upper end of the front-rear moving mechanism 2, a left-right moving mechanism 4 is arranged inside the frame 3, a lifting mechanism 5 is arranged at the front end of the left-right moving mechanism 4, a friction welding body 6 is arranged at the upper end of the lifting mechanism 5, and a stirring head 7 is fixedly connected to the output end of the friction welding body 6.

[0033] Specifically, the front-back moving mechanism 2 includes a first motor 201, a moving rod 202, a bearing seat 203 and a first screw rod 204. The lower end of the workbench 1 is fixedly connected to the first motor 201 and the bearing seat 203. The first screw rod 204 is rotatably connected inside the bearing seat 203. The output end of the first motor 201 is fixedly connected to the first screw rod 204. The circumferential surface of the first screw rod 204 is threadedly connected to the moving rod 202. The upper end of the moving rod 202 is fixedly connected to the frame 3; both sides of the workbench 1 are fixedly connected to the fourth slide rail 14, and the fourth slide rail 14 is slidably connected to the second slider 15. The second slider 15 is fixedly connected to the frame 3. With the cooperation of the fourth slide rail 14 and the second slider 15, the movement of the frame 3 can be made more stable; the left-right moving mechanism 4 includes a second motor 401, a second screw rod 402, a first moving seat 403 and a first slide rail 404. The second screw rod 402 is rotatably connected inside the frame 3. The circumferential surface of the second screw rod 402 is threadedly connected to the first moving seat 403, and the first sliding rail 404 is slidably connected inside the first moving seat 403. The first sliding rail 404 is fixedly connected to the frame 3, and the second motor 401 is fixedly connected to the right side of the frame 3. The output end of the second motor 401 is fixedly connected to the second screw rod 402; the lifting mechanism 5 includes an electric telescopic rod 501, a second moving seat 502, a slide bar 503 and a second slide rail 504. The upper end of the first moving seat 403 is fixedly connected to the electric telescopic rod 501, and the extended end of the electric telescopic rod 501 is fixedly connected to the second moving seat 502. The upper end of the second moving seat 502 is connected to the friction welding body 6, and the output end of the friction welding body 6 passes through the lower end of the second moving seat 502. The front end of the first moving seat 403 is fixedly connected to the second sliding rail 504, and the slide bar 503 is slidably connected to the second slide rail 504, and the slide bar 503 is fixedly connected to the second moving seat 502.

[0034] When in use, the first motor 201 is working, and at this time, with the cooperation of the first screw rod 204, the moving rod 202 can be driven to move, and then with the cooperation of the fourth slide rail 14 and the second slider 15, the frame 3 can be driven to move forward and backward, thereby changing the front and rear position of the stirring head 7; the second motor 401 is working, and at this time, with the cooperation of the second screw rod 402, the first moving seat 403 can be driven to move left and right on the first slide rail 404, thereby changing the left and right position of the stirring head 7; the electric telescopic rod 501 is working, and with the cooperation of the second slide rail 504 and the slide bar 503, the second moving seat 502 can be driven to move up and down, thereby changing the height of the stirring head 7. When the stirring head 7 moves down, the friction welding body 6 works, which can drive the stirring head 7 to rotate, so that under the action of the stirring head 7, the contact part of the two workpieces can be stir-friction welded.

[0035] A placing table 10 is fixedly connected to the upper end of the workbench 1, and a front-and-rear adjusting mechanism 8 and a left-and-right adjusting mechanism 11 are arranged inside the placing table 10. A first clamping assembly 9 is arranged on the upper end of the front-and-rear adjusting mechanism 8; a second clamping assembly 12 is arranged on the upper end of the left-and-right adjusting mechanism 11, and a pressing assembly 13 is arranged on the upper end of the second clamping assembly 12. The pressing assembly 13 is used to press and fix the workpiece.

[0036] Specifically, the front and rear adjustment mechanism 8 includes a third motor 801, a first bidirectional threaded rod 802, a first threaded block 803 and a first slide groove 804. The first bidirectional threaded rod 802 is rotatably connected inside the placement table 10. The first bidirectional threaded rod 802 is threadedly connected to the first threaded block 803 on the circumferential surface. Two first threaded blocks 803 are provided and symmetrically distributed on the first bidirectional threaded rod 802. The internal threads of the two first threaded blocks 803 are in opposite directions. The upper end surface of the placement table 10 is provided with a first slide groove 804. The first threaded block 803 is located inside the first slide groove 804 and is slidably connected to the first slide groove 804. The front end of the placement table 10 is fixedly connected to the third motor 801. The output end of the motor 801 and the third motor 801 are fixedly connected to the first bidirectional threaded rod 802; the first clamping assembly 9 includes a first square bar 901, a first adjusting screw 902, a first handle 903, an adjusting block 904, a clamping block 905 and a square groove 906, the upper end of the first threaded block 803 is fixedly connected to the first square bar 901, the first adjusting screw 902 is rotatably connected inside the first square bar 901, the left end of the first adjusting screw 902 is fixedly connected to the first handle 903, the circumferential surface of the first adjusting screw 902 is threadedly connected to the adjusting block 904, the adjusting block 904 is slidably connected to the first square bar 901, and the adjusting block 904 is away from the first square bar 901. A clamping block 905 is fixedly connected to one end of the inner wall of a square bar 901, and a square groove 906 is provided on a side of the clamping block 905 away from the adjustment block 904. When in use, the first handle 903 is rotated to drive the first adjustment threaded rod to rotate, thereby driving the adjustment block 904 to slide inside the first square bar 901. As the adjustment block 904 moves, the clamping block 905 is also driven to move, thereby changing the position of the square groove 906 to facilitate the square groove 906 to correspond to the welding seam, which is conducive to welding the two workpieces together; the left and right adjustment mechanism 11 includes a fourth motor 1101, a second bidirectional threaded rod 1102, a second threaded block 1103 and a second slide groove 1104. 104, a second bidirectional threaded rod 1102 is rotatably connected inside the placement table 10, and a second threaded block 1103 is threadedly connected to the circumferential surface of the second bidirectional threaded rod 1102. Two second threaded blocks 1103 are provided and symmetrically distributed on the second bidirectional threaded rod 1102. The internal threads of the two second threaded blocks 1103 are in opposite directions. A second slide groove 1104 is provided on the upper end surface of the placement table 10. The second threaded block 1103 is located inside the second slide groove 1104 and is slidably connected to the second slide groove 1104; a fourth motor 1101 is fixedly connected to the front end of the placement table 10, and the output end of the fourth motor 1101 is fixedly connected to the second bidirectional threaded rod 1102;The second clamping assembly 12 includes a second square bar 1201, a clamping plate 1202, a connecting rod 1203, a moving block 1204, a first guide rod 1205, a spring 1206 and a connecting plate 1207. The second square bar 1201 is fixedly connected to the upper end of the second threaded block 1103, the connecting rod 1203 is slidably connected inside the second square bar 1201, one end of the connecting rod 1203 is fixedly connected to the clamping plate 1202, the other end of the connecting plate 1207 is fixedly connected to the moving block 1204, the first guide rod 1205 is slidably connected inside the moving block 1204, one end of the first guide rod 1205 is fixedly connected to the second square bar 1201, the other end of the first guide rod 1205 is fixedly connected to the connecting plate 1207, the circumferential surface of the first guide rod 1205 is provided with a spring 1206, one end of the spring 1206 is fixedly connected to the moving block 1204, and the other end of the spring 1206 is fixedly connected to the connecting plate 1207. ;

[0037] When in use, the third motor 801 is working, and at this time, with the cooperation of the first bidirectional threaded rod 802, the first threaded block 803 can be driven to slide inside the first slide groove 804, so that the distance between the two first clamping assemblies 9 can be changed, which makes it convenient to clamp and fix workpieces of different lengths. As the first threaded block 803 moves, after the clamping block 905 contacts the workpiece, the front and rear positions of the workpiece are clamped and fixed; after the front and rear positions of the workpiece are clamped and fixed, the fourth motor 1101 is working, and at this time, with the cooperation of the second bidirectional threaded rod 1102, the second threaded block 1103 can be driven to slide inside the second slide groove 1104, so that the distance between the two second clamping assemblies 9 can be changed. 12, so it is convenient to clamp and fix the workpiece that does not pass the width, with the movement of the second threaded block 1103, after the clamping plate 1202 contacts the workpiece, with the continued movement of the second threaded block 1103, the connecting rod 1203 can drive the moving block 1204 to move toward the connecting plate 1207, thereby compressing the spring 1206, and the compressed spring 1206 also enables the clamping plate 1202 to clamp the workpiece under the action of the reaction force, so that the clamping plate 1202 can clamp and fix the workpiece in the left and right positions, and no manual operation is required when clamping and fixing the workpiece, thereby reducing the labor intensity of workers.

[0038] The pressing assembly 13 includes a support frame 1301, a transmission rod 1302, a third movable seat 1303, a third slide rail 1304, a first slider 1305, a second adjusting screw 1306, a second handle 1307, a second guide rod 1308 and a pressing plate 1309. The upper end of the second square bar 1201 is fixedly connected to the support frame 1301, and the side of the support frame 1301 close to the clamping plate 1202 is fixedly connected to the third slide rail 1304. The third slide rail 1304 is slidably connected to the first The slider 1305, one end of the first slider 1305 away from the support frame 1301 is fixedly connected to the third movable seat 1303, the third movable seat 1303 is internally threadedly connected to the second adjusting screw 1306, the upper end of the second adjusting screw 1306 is fixedly connected to the second handle 1307, the lower end of the second adjusting screw 1306 is rotatably connected to the holding plate 1309, the upper end of the holding plate 1309 is fixedly connected to the second guide rod 1308, the second guide rod 1308 and the third movable seat 1303 are connected. The third movable seat 1303 is rotatably connected with the third movable seat 1303 by rotating the upper end of the movable block 1204, and the end of the movable block 1204 away from the movable block 1204 is rotatably connected with the third movable seat 1303. During operation, as the movable block 1204 moves, the third movable seat 1303 can be driven to move downward with the cooperation of the transmission rod 1302, and at the same time, the third movable seat 1303 can be stably moved downward with the cooperation of the first slider 1305 and the third slide rail 1304. As the third movable seat 1303 moves downward, the pressing plate 1309 can be driven to press and hold the upper end of the workpiece, so that the workpiece can be stably fixed on the placing table 10; the second adjusting screw 1306 can be driven to rotate and move by rotating the second handle 1307, and then the pressing plate 1309 can be driven to move stably with the cooperation of the second guide rod 1308, so that the height of the pressing plate 1309 can be changed, so as to facilitate the pressing and fixing of workpieces of different heights, thereby improving the usability of the device.

[0039] A square hole 16 is provided on the side end surface of the support frame 1301 , and the transmission rod 1302 is located inside the square hole 16 . During operation, the square hole 16 is provided to facilitate the movement of the transmission rod 1302 .

[0040] Working principle:

[0041] When in use, the two workpieces to be welded are placed on the placement table 10, and then the third motor 801 works. At this time, with the cooperation of the first bidirectional threaded rod 802, the first threaded block 803 can be driven to slide inside the first slide groove 804. As the first threaded block 803 moves, after the clamping block 905 contacts the workpiece, the front and rear positions of the workpieces are clamped and fixed. After the front and rear positions of the workpieces are clamped and fixed, the fourth motor 1101 works. At this time, with the cooperation of the second bidirectional threaded rod 1102, the second threaded block 1103 can be driven to slide inside the second slide groove 1104. As the second threaded block 1103 moves, after the clamping plate 1202 contacts the workpiece, as the second threaded block With the continued movement of 1103, the moving block 1204 can be driven to move toward the connecting plate 1207 with the cooperation of the connecting rod 1203. With the movement of the moving block 1204, the third moving seat 1303 can be driven to move downward with the cooperation of the transmission rod 1302. At the same time, with the cooperation of the first slider 1305 and the third slide rail 1304, the third moving seat 1303 can be stably moved downward. With the downward movement of the third moving seat 1303, the holding plate 1309 can be driven to hold the upper end of the workpiece. After the holding plate 1309 is pressed on the upper end of the workpiece, the clamping plate 1202 is also stably clamped on the left and right sides of the workpiece, so that the workpiece can be stably fixed on the placement table 10. After the workpieces are fixed, the friction welding body 6 works to drive the stirring head 7 to rotate, and then the front-back moving mechanism 2 and the left-right moving mechanism 4 can be used to drive the stirring head 7 to move, so that the stirring head 7 can reach the upper end of the end where the two workpieces are bonded, and then the lifting mechanism 5 drives the stirring head 7 to move downward, so that the stirring head 7 reaches the end where the two workpieces are bonded, and then the front-back moving mechanism 2 and the left-right moving mechanism 4 can be controlled to move the stirring head 7 at the bonding point of the two workpieces, so that under the action of the stirring head 7, the bonding point of the two workpieces can be stir friction welded.

[0042] 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 friction stir welding device with a stable clamping structure, comprising a workbench (1), characterized in that: A forward and backward moving mechanism (2) is arranged at the lower end of the workbench (1); a frame (3) is arranged at the upper end of the forward and backward moving mechanism (2); a left and right moving mechanism (4) is arranged inside the frame (3); a lifting mechanism (5) is arranged at the front end of the left and right moving mechanism (4); a friction welding machine body (6) is arranged at the upper end of the lifting mechanism (5); and a stirring head (7) is fixedly connected to the output end of the friction welding machine body (6); The upper end of the workbench (1) is fixedly connected to a placement table (10), and a front-rear adjustment mechanism (8) and a left-right adjustment mechanism (11) are arranged inside the placement table (10). A first clamping assembly (9) is arranged at the upper end of the front-rear adjustment mechanism (8); a second clamping assembly (12) is arranged at the upper end of the left-right adjustment mechanism (11), and a pressing assembly (13) is arranged at the upper end of the second clamping assembly (12), and the pressing assembly (13) is used to press and fix the workpiece.

2. The friction stir welding device with a stable clamping structure according to claim 1, characterized in that: The forward and backward moving mechanism (2) comprises a first motor (201), a moving rod (202), a bearing seat (203) and a first screw rod (204); the lower end of the workbench (1) is fixedly connected to the first motor (201) and the bearing seat (203); the first screw rod (204) is rotatably connected inside the bearing seat (203); the output end of the first motor (201) is fixedly connected to the first screw rod (204); the circumferential surface of the first screw rod (204) is threadedly connected to the moving rod (202); the upper end of the moving rod (202) is fixedly connected to the frame (3); both sides of the workbench (1) are fixedly connected to fourth slide rails (14); the fourth slide rails (14) are slidably connected to second sliders (15); the second sliders (15) are fixedly connected to the frame (3).

3. The friction stir welding device with a stable clamping structure according to claim 2, characterized in that: The left-right moving mechanism (4) comprises a second motor (401), a second screw rod (402), a first moving seat (403) and a first slide rail (404); the second screw rod (402) is rotatably connected inside the frame (3); the circumferential surface of the second screw rod (402) is threadedly connected to the first moving seat (403); the first moving seat (403) is slidably connected to the first slide rail (404); the first slide rail (404) is fixedly connected to the frame (3); the second motor (401) is fixedly connected to the right side of the frame (3); and the output end of the second motor (401) is fixedly connected to the second screw rod (402).

4. The friction stir welding device with a stable clamping structure according to claim 3, characterized in that: The lifting mechanism (5) comprises an electric telescopic rod (501), a second movable seat (502), a slide bar (503) and a second slide rail (504); the upper end of the first movable seat (403) is fixedly connected to the electric telescopic rod (501); the extended end of the electric telescopic rod (501) is fixedly connected to the second movable seat (502); the upper end of the second movable seat (502) is connected to a friction welding machine body (6); the output end of the friction welding machine body (6) passes through the lower end of the second movable seat (502); the front end of the first movable seat (403) is fixedly connected to the second slide rail (504); the second slide rail (504) is slidably connected to the slide bar (503); and the slide bar (503) is fixedly connected to the second movable seat (502).

5. The friction stir welding device with a stable clamping structure according to claim 1, characterized in that: The front-rear adjustment mechanism (8) comprises a third motor (801), a first bidirectional threaded rod (802), a first threaded block (803) and a first slide groove (804); the first bidirectional threaded rod (802) is rotatably connected inside the placement platform (10); the first bidirectional threaded rod (802) is threadedly connected to the first threaded block (803) on its circumferential surface; two first threaded blocks (803) are provided and symmetrically distributed on the first bidirectional threaded rod (802); the internal threads of the two first threaded blocks (803) are in opposite directions; the first slide groove (804) is provided on the upper end surface of the placement platform (10); the first threaded block (803) is located inside the first slide groove (804) and is slidably connected to the first slide groove (804); the front end of the placement platform (10) is fixedly connected to the third motor (801); the output end of the third motor (801) is fixedly connected to the first bidirectional threaded rod (802).

6. The friction stir welding device with a stable clamping structure according to claim 5, characterized in that: The first clamping assembly (9) comprises a first square bar (901), a first adjusting screw (902), a first handle (903), an adjusting block (904), a clamping block (905) and a square groove (906); the first square bar (901) is fixedly connected to the upper end of the first threaded block (803); the first square bar (901) is rotatably connected to the first adjusting screw (902) inside; the left end of the first adjusting screw (902) is fixedly connected to the first handle (903); the circumferential surface of the first adjusting screw (902) is threadedly connected to the adjusting block (904); the adjusting block (904) and the first square bar (901) are slidably connected; one end of the adjusting block (904) away from the inner wall of the first square bar (901) is fixedly connected to the clamping block (905); and a square groove (906) is provided on a surface of the clamping block (905) away from the adjusting block (904).

7. The friction stir welding device with a stable clamping structure according to claim 1, characterized in that: The left-right adjustment mechanism (11) comprises a fourth motor (1101), a second bidirectional threaded rod (1102), a second threaded block (1103) and a second slide groove (1104); the second bidirectional threaded rod (1102) is rotatably connected inside the placement platform (10); the second bidirectional threaded rod (1102) is threadedly connected to the second threaded block (1103) on its circumferential surface; two second threaded blocks (1103) are provided and symmetrically distributed on the second bidirectional threaded rod (1102); the internal threads of the two second threaded blocks (1103) are in opposite directions; the second slide groove (1104) is provided on the upper end surface of the placement platform (10); the second threaded block (1103) is located inside the second slide groove (1104) and is slidably connected to the second slide groove (1104); the fourth motor (1101) is fixedly connected to the front end of the placement platform (10); the output end of the fourth motor (1101) is fixedly connected to the second bidirectional threaded rod (1102).

8. The friction stir welding device with a stable clamping structure according to claim 7, characterized in that: The second clamping assembly (12) comprises a second square bar (1201), a clamping plate (1202), a connecting rod (1203), a moving block (1204), a first guide rod (1205), a spring (1206) and a connecting plate (1207); the second square bar (1201) is fixedly connected to the upper end of the second threaded block (1103); the connecting rod (1203) is slidably connected inside the second square bar (1201); one end of the connecting rod (1203) is fixedly connected to the clamping plate (1202); the other end of the connecting plate (1207) is fixedly connected to the clamping plate (1202); A moving block (1204) is fixedly connected, and a first guide rod (1205) is slidably connected inside the moving block (1204), one end of the first guide rod (1205) is fixedly connected to the second square bar (1201), and the other end of the first guide rod (1205) is fixedly connected to a connecting plate (1207), and a spring (1206) is provided on the circumferential surface of the first guide rod (1205), one end of the spring (1206) is fixedly connected to the moving block (1204), and the other end of the spring (1206) is fixedly connected to the connecting plate (1207).

9. The friction stir welding device with a stable clamping structure according to claim 8, characterized in that: The holding assembly (13) comprises a support frame (1301), a transmission rod (1302), a third movable seat (1303), a third slide rail (1304), a first slider (1305), a second adjusting screw rod (1306), a second handle (1307), a second guide rod (1308) and a holding plate (1309); the upper end of the second square bar (1201) is fixedly connected to the support frame (1301); a surface of the support frame (1301) close to the clamping plate (1202) is fixedly connected to the third slide rail (1304); the third slide rail (1304) is slidably connected to the first slider (1305); an end of the first slider (1305) away from the support frame (1301) is fixedly connected to the second guide rod (1308); A third movable seat (1303) is connected, the third movable seat (1303) is internally threadedly connected to a second adjusting screw (1306), the upper end of the second adjusting screw (1306) is fixedly connected to a second handle (1307), the lower end of the second adjusting screw (1306) is rotatably connected to a holding plate (1309), the upper end of the holding plate (1309) is fixedly connected to a second guide rod (1308), and the second guide rod (1308) is slidably connected to the third movable seat (1303); the upper end of the movable block (1204) is rotatably connected to a transmission rod (1302), and the end of the transmission rod (1302) away from the movable block (1204) is rotatably connected to the third movable seat (1303).

10. The friction stir welding device with a stable clamping structure according to claim 9, characterized in that: A square hole (16) is provided on the side end surface of the support frame (1301), and the transmission rod (1302) is located inside the square hole (16).

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