Friction stir welding automatic clamping fixture capable of removing flash

Abstract

The invention relates to the technical field of friction stir welding, in particular to a friction stir welding automatic clamping fixture capable of removing flash, which comprises a workbench, a placing table is fixedly connected to the middle position of the upper end of the workbench, a first clamping mechanism and a second clamping mechanism are arranged at the upper end of the placing table, and the first clamping mechanism is used for clamping the front and rear sides of a workpiece; the second clamping mechanism is used for clamping the left side and the right side of the workpiece; a lifting mechanism is arranged on the left side of the workbench, a pushing mechanism is arranged in the lifting mechanism, an adjusting mechanism is arranged in the upper end of the pushing mechanism, a cutter is arranged at the upper end of the lifting mechanism, and the pushing mechanism is connected with the cutter through the adjusting mechanism. According to the invention, not only can the automatic clamping of the workpiece be realized, but also the flash at the weld joint can be treated after the welding is finished, so that the machining efficiency of the workpiece is improved.

Description

Technical Field

[0001] The invention relates to the technical field of friction stir welding, in particular to an automatic friction stir welding clamp capable of removing flash. Background Art

[0002] Friction stir welding is a solid-state welding technology that uses friction heating and stirring to join metal materials together. With the continuous development of friction stir welding technology, it has become a very important welding method. It can be used to weld various types of metal materials, including aluminum alloys, titanium alloys, nickel-based alloys, etc. Moreover, friction stir welding also has the advantages of fast welding speed, high quality of welded joints, and environmentally friendly welding process, so it has received widespread attention and application.

[0003] When the existing friction stir welding equipment clamps and fixes the workpiece, the clamping and fixing process of the workpiece is cumbersome, which affects the efficiency of the workpiece clamping and further affects the efficiency of welding; at the same time, after the welding is completed, the flash generated by the welding needs to be removed in the next process, which affects the production efficiency of the workpiece. Therefore, it is necessary to design an automatic friction stir welding clamping fixture that can remove flash. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an automatic clamping fixture for friction stir welding that can remove flash.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an automatic clamping fixture for friction stir welding capable of removing flash, comprising a workbench, wherein both the front and rear sides of the upper end of the workbench are provided with horizontal left and right moving mechanisms, a horizontal front and rear moving mechanism is provided inside the horizontal left and right moving mechanism, and a friction stir welding machine body is provided at the right end of the horizontal front and rear moving mechanism; a power mechanism is provided at the left side of the lower end of the workbench, and the power mechanism is used to provide power to the horizontal left and right moving mechanism;

[0006] A placing table is fixedly connected to the middle position of the upper end of the workbench, and a first clamping mechanism and a second clamping mechanism are arranged on the upper end of the placing table. The first clamping mechanism is used to clamp the front and rear sides of the workpiece, and the second clamping mechanism is used to clamp the left and right sides of the workpiece.

[0007] A lifting mechanism is arranged on the left side of the workbench, a pushing mechanism is arranged inside the lifting mechanism, an adjusting mechanism is arranged inside the upper end of the pushing mechanism, a tool is arranged on the upper end of the lifting mechanism, and the pushing mechanism is connected with the tool through the adjusting mechanism.

[0008] The horizontal left and right moving mechanism includes a bearing seat, a first screw rod, a first slide rail and a first moving frame. The bearing seats are fixedly connected to both sides of the upper end of the workbench. The first screw rod is rotatably connected inside the bearing seat. The first screw rod is threadedly connected to the first moving frame on the circumferential surface. The first slide rail is slidably connected to the lower end of the first moving frame. The first slide rail is fixedly connected to the workbench.

[0009] The power mechanism includes a fifth servo motor, a first synchronous wheel, a synchronous belt and a second synchronous wheel. The lower end of the workbench is fixedly connected to the fifth servo motor, and the output end of the fifth servo motor is fixedly connected to the first synchronous wheel; the left end of the first screw rod is fixedly connected to the second synchronous wheel, and the second synchronous wheel is connected to the first synchronous wheel through a synchronous belt.

[0010] The horizontal forward and backward moving mechanism includes a first servo motor, a first moving block and a second screw rod. The second screw rod is rotatably connected inside the first moving frame, and the first moving block is threadedly connected to the circumferential surface of the second screw rod. The first moving block is located inside the first moving frame and is slidably connected to the first moving frame. The first moving block is fixedly connected to the stir friction welding body; the first servo motor is fixedly connected to the rear end of the first moving frame, and the output end of the first servo motor is fixedly connected to the second screw rod.

[0011] The first clamping mechanism includes a fourth servo motor, a bidirectional threaded rod, a fourth moving block and a clamping block. The placing table is rotatably connected with the bidirectional threaded rod inside, and the circumferential surface of the bidirectional threaded rod is threadedly connected with the fourth moving block. The fourth moving block is located inside the placing table and is slidably connected to the placing table. Two fourth moving blocks are provided and are symmetrically distributed on the bidirectional threaded rod. The internal threads of the two fourth moving blocks are in opposite directions. The upper end of the fourth moving block is fixedly connected with the clamping block; the rear end of the placing table is fixedly connected with the fourth servo motor, and the output end of the fourth servo motor is fixedly connected to the bidirectional threaded rod.

[0012] The second clamping mechanism includes a moving rod, a disc, a connecting seat, a transmission rod, a spring, a sliding rod, a clamping plate and a sliding groove, wherein the moving rod is slidably connected inside the clamping block, one end of the moving rod is fixedly connected to the disc, and the other end of the moving rod is fixedly connected to the connecting seat, both ends of the connecting seat are rotatably connected to the transmission rod, the end of the transmission rod away from the connecting seat is rotatably connected to the sliding rod, and the end of the sliding rod away from the clamping block is fixedly connected to the clamping plate, a sliding groove is provided on a side of the clamping block close to the connecting seat, and the sliding groove and the sliding rod are slidably connected; a circular groove is provided on a side of the clamping block close to the disc, and the circular groove corresponds to the disc; a spring is provided on the circumferential surface of the moving rod, one end of the spring is fixedly connected to the clamping block, and the other end of the spring is fixedly connected to the connecting seat.

[0013] The lifting mechanism includes a hydraulic telescopic rod and a mobile frame. The lower end of the workbench is fixedly connected to the hydraulic telescopic rod. The extended end of the hydraulic telescopic rod passes through the upper end surface of the workbench and is slidably connected to the workbench. The extended end of the hydraulic telescopic rod is fixedly connected to the mobile frame. The right end of the mobile frame is fixedly connected to a limiting groove. The limiting groove is slidably connected to a limiting strip, and the limiting strip is fixedly connected to the placement table.

[0014] The pushing mechanism includes a second servo motor, a second moving frame, a third screw rod and a second moving block. The third screw rod is rotatably connected inside the moving frame, and the second moving block is threadedly connected to the circumferential surface of the third screw rod. The second moving block is located inside the moving frame and is slidably connected to the moving frame. The second moving frame is fixedly connected to the second moving frame at the upper end; the second servo motor is fixedly connected to the left end of the moving frame, and the output end of the second servo motor is fixedly connected to the third screw rod.

[0015] The adjusting mechanism includes a third servo motor, a fourth screw and a third moving block. The fourth screw is rotatably connected inside the second moving frame, and the third moving block is threadedly connected to the circumferential surface of the fourth screw. The right end of the third moving block is fixedly connected to the tool. The third moving block is located inside the second moving frame and is slidably connected to the second moving frame. The third servo motor is fixedly connected to the rear end of the second moving frame, and the output end of the third servo motor is fixedly connected to the fourth screw.

[0016] The upper end of the movable frame is fixedly connected with a second slide rail, the second slide rail is slidably connected with a limit seat, and the limit seat is slidably connected to the tool.

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

[0018] 1. Compared with the prior art, the present invention sets a first clamping mechanism and a second clamping mechanism. When in use, the workpiece to be welded is placed on a placement table, and then the first clamping mechanism works to clamp and fix the front and rear positions of the workpiece. At the same time, with the cooperation of the second clamping mechanism, the left and right positions of the workpiece can be clamped and fixed, thereby realizing automatic clamping of the workpiece. At the same time, the cooperation between the first clamping mechanism and the second clamping mechanism is also conducive to the alignment of the workpieces when clamping and fixing.

[0019] 2. Compared with the prior art, the present invention can achieve the processing of weld flash by setting a pushing mechanism and a tool. When in use, the lifting mechanism drives the tool to move upward so that the lower end surface of the tool corresponds to the upper end surface of the workpiece. Then the pushing mechanism works, and the tool can be driven to move. When the tool contacts the weld flash, the flash can be cleaned up, so that when processing the weld flash, there is no need to transfer to the next process for processing, thereby improving the production efficiency of the workpiece.

[0020] 3. Compared with the prior art, the present invention sets a third servo motor, a fourth screw and a third moving block. When in use, the third servo motor works, and the third moving block can be driven to move under the action of the fourth screw, thereby driving the tool to move, thereby changing the position of the tool so that the tool corresponds to the weld, which makes it easier for the tool to process the flash at the weld in the later stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention from the first viewing angle as a whole;

[0022] Figure 2 It is a schematic diagram of the structure of the second viewing angle of the whole invention;

[0023] Figure 3 It is a schematic diagram of the structure of the present invention as a whole from a third viewing angle;

[0024] Figure 4 It is a structural schematic diagram of the cooperation between the first clamping mechanism and the second clamping mechanism of the present invention;

[0025] Figure 5 For the present invention Figure 4 Enlarged view of part A in the middle;

[0026] Figure 6 It is a schematic diagram of the internal structure after the first clamping mechanism and the second clamping mechanism of the present invention cooperate with each other;

[0027] Figure 7 It is a schematic diagram of the structure of the lifting mechanism, the pushing mechanism and the adjusting mechanism of the present invention;

[0028] Figure 8 It is a schematic diagram of the internal structure after the lifting mechanism, the pushing mechanism and the adjusting mechanism of the present invention cooperate with each other.

[0029] Legend:

[0030] 1. Workbench; 2. Horizontal left and right moving mechanism; 201. Bearing seat; 202. First screw rod; 203. First slide rail; 204. First moving frame; 3. Horizontal forward and backward moving mechanism; 301. First servo motor; 302. First moving block; 303. Second screw rod; 4. Stir friction welding machine body; 5. Lifting mechanism; 501. Moving frame; 502. Hydraulic telescopic rod; 6. Pushing mechanism; 601. Second servo motor; 602. Second moving frame; 603. Third screw rod; 604. Second moving block; 7. Adjusting mechanism; 701. Third servo motor; 702. Fourth screw rod; 703. Third moving block; 8. Tool; 9. Place Table; 10. first clamping mechanism; 1001. fourth servo motor; 1002. bidirectional threaded rod; 1003. fourth moving block; 1004. clamping block; 11. second clamping mechanism; 1101. moving rod; 1102. disc; 1103. connecting seat; 1104. transmission rod; 1105. spring; 1106. slide rod; 1107. clamping plate; 1108. slide groove; 12. power mechanism; 1201. fifth servo motor; 1202. first synchronous wheel; 1203. synchronous belt; 1204. second synchronous wheel; 13. circular groove; 14. limit strip; 15. limit groove; 16. second slide rail; 17. limit seat. DETAILED DESCRIPTION

[0031] Reference Figure 1-8 The present invention provides an automatic clamping fixture for friction stir welding capable of removing flash, comprising a workbench 1, wherein horizontal left-right moving mechanisms 2 are arranged on both the front and rear sides of the upper end of the workbench 1, a horizontal front-back moving mechanism 3 is arranged inside the horizontal left-right moving mechanism 2, and a friction stir welding body 4 is arranged at the right end of the horizontal front-back moving mechanism 3; a power mechanism 12 is arranged on the left side of the lower end of the workbench 1, and the power mechanism 12 is used to provide power to the horizontal left-right moving mechanism 2.

[0032] Specifically, the horizontal left-right moving mechanism 2 includes a bearing seat 201, a first screw rod 202, a first slide rail 203 and a first moving frame 204. The bearing seats 201 are fixedly connected to both sides of the upper end of the workbench 1. The first screw rod 202 is rotatably connected inside the bearing seat 201. The first screw rod 202 is threadedly connected to the first moving frame 204 on the circumferential surface. The first slide rail 203 is slidably connected to the lower end of the first moving frame 204. The first slide rail 203 is fixedly connected to the workbench 1; the power mechanism 12 includes a fifth servo motor 1201, a first synchronous wheel 1202, a synchronous belt 1203 and a second synchronous wheel 1204. The fifth servo motor 1201 is fixedly connected to the lower end of the workbench 1, and the output end of the fifth servo motor 1201 is fixedly connected to the first synchronous wheel 1202; The left end of the first screw rod 202 is fixedly connected to the second synchronous wheel 1204, and the second synchronous wheel 1204 is connected to the first synchronous wheel 1202 through a synchronous belt 1203; the horizontal forward and backward moving mechanism 3 includes a first servo motor 301, a first moving block 302 and a second screw rod 303, the second screw rod 303 is rotatably connected inside the first moving frame 204, and the first moving block 302 is threadedly connected to the circumferential surface of the second screw rod 303, the first moving block 302 is located inside the first moving frame 204, and is slidably connected to the first moving frame 204, and the first moving block 302 is fixedly connected to the stir friction welding body 4; the first servo motor 301 is fixedly connected to the rear end of the first moving frame 204, and the output end of the first servo motor 301 is fixedly connected to the second screw rod 303.

[0033] When in use, the fifth servo motor 1201 is working, and at this time, the first screw rod 202 can be driven to rotate with the cooperation of the first synchronous wheel 1202, the synchronous belt 1203 and the second synchronous wheel 1204. As the first screw rod 202 rotates, the first moving frame 204 can be driven to slide on the first slide rail 203, thereby driving the stir friction welding body 4 to move left and right; when the first servo motor 301 is working, at this time, the first moving block 302 can be driven to move forward and backward under the action of the second screw rod 303, thereby driving the stir friction welding body 4 to move forward and backward, which is convenient for welding workpieces.

[0034] A placing table 9 is fixedly connected to the middle position of the upper end of the workbench 1. A first clamping mechanism 10 and a second clamping mechanism 11 are arranged on the upper end of the placing table 9. The first clamping mechanism 10 is used to clamp the front and rear sides of the workpiece, and the second clamping mechanism 11 is used to clamp the left and right sides of the workpiece.

[0035] Specifically, the first clamping mechanism 10 includes a fourth servo motor 1001, a bidirectional threaded rod 1002, a fourth moving block 1003 and a clamping block 1004. The placing table 9 is rotatably connected with the bidirectional threaded rod 1002, and the circumferential surface of the bidirectional threaded rod 1002 is threadedly connected with the fourth moving block 1003. The fourth moving block 1003 is located inside the placing table 9 and is slidably connected to the placing table 9. Two fourth moving blocks 1003 are arranged and are symmetrically distributed on the bidirectional threaded rod 1002. The internal threads of the two fourth moving blocks 1003 are in opposite directions. The upper end of the fourth moving block 1003 is fixedly connected with the clamping block 1004; the rear end of the placing table 9 is fixedly connected with the fourth servo motor 1001, and the output end of the fourth servo motor 1001 is fixedly connected with the bidirectional threaded rod 1002; the second clamping mechanism 11 includes a moving rod 1101, a disc 1102, a connecting seat 1103, a transmission rod 1104, a spring 1105, a sliding rod 1106, a clamping block 1004, a The plate 1107 and the slide groove 1108, the clamping block 1004 is slidably connected with a moving rod 1101 inside, one end of the moving rod 1101 is fixedly connected with a disk 1102, the other end of the moving rod 1101 is fixedly connected with a connecting seat 1103, both ends of the connecting seat 1103 are rotatably connected with a transmission rod 1104, the end of the transmission rod 1104 away from the connecting seat 1103 is rotatably connected with a slide rod 1106, and the end of the slide rod 1106 away from the clamping block 1004 is fixedly connected with a clamping Plate 1107, a sliding groove 1108 is provided on one side of the clamping block 1004 close to the connecting seat 1103, and the sliding groove 1108 is slidably connected to the sliding rod 1106; a circular groove 13 is provided on one side of the clamping block 1004 close to the disk 1102, and the circular groove 13 corresponds to the disk 1102; a spring 1105 is provided on the circumferential surface of the moving rod 1101, one end of the spring 1105 is fixedly connected to the clamping block 1004, and the other end of the spring 1105 is fixedly connected to the connecting seat 1103.

[0036] When in use, the workpiece to be welded is placed on the placement table 9, and then the fourth servo motor 1001 starts working. At this time, with the cooperation of the bidirectional threaded rod 1002, the third moving block 703 can be driven to slide inside the placement table 9, and then the clamping block 1004 can be driven to move. When the two clamping blocks 1004 move toward each other, the front and back clamping and fixing of the workpiece can be achieved; when the clamping block 1004 approaches the workpiece, the disc 1102 contacts the workpiece, and then the disc 1102 is squeezed to move into the circular groove 13, thereby driving the moving rod 1101 to move outward. As the moving rod 1101 moves outward, At this time, with the cooperation of the connecting seat 1103 and the transmission rod 1104, the sliding rod 1106 can be driven to slide into the sliding groove 1108, and then the clamping plate 1107 can be driven to approach the workpiece, so that the left and right positions of the workpiece can be clamped and fixed under the action of the clamping plate 1107, thereby achieving the purpose of automatically clamping the workpiece. At the same time, in the clamping process, with the cooperation of the clamping block 1004 and the clamping plate 1107, it is beneficial to align the workpieces together; when the moving rod 1101 moves outward, the spring 1105 is also stretched, and the stretched spring 1105 is beneficial to the resetting of the moving rod 1101.

[0037] A lifting mechanism 5 is arranged on the left side of the workbench 1 , a pushing mechanism 6 is arranged inside the lifting mechanism 5 , an adjusting mechanism 7 is arranged inside the upper end of the pushing mechanism 6 , a tool 8 is arranged on the upper end of the lifting mechanism 5 , and the pushing mechanism 6 is connected to the tool 8 through the adjusting mechanism 7 .

[0038] Specifically, the lifting mechanism 5 includes a hydraulic telescopic rod 502 and a moving frame 501. The lower end of the workbench 1 is fixedly connected to the hydraulic telescopic rod 502. The extended end of the hydraulic telescopic rod 502 passes through the upper end surface of the workbench 1 and is slidably connected to the workbench 1. The extended end of the hydraulic telescopic rod 502 is fixedly connected to the moving frame 501. The right end of the moving frame 501 is fixedly connected to the limiting groove 15. The limiting groove 15 is internally slidably connected to the limiting strip 14. The limiting strip 14 is fixedly connected to the placement table 9; the pushing mechanism 6 includes a second servo motor 601, a second moving frame 602, a third screw rod 603 and a second moving block 604. The moving frame 501 is internally rotatably connected to the third screw rod 603. The circumferential surface of the third screw rod 603 is threadedly connected to the second moving block 604. The second moving block 604 is located inside the moving frame 501 and is connected to the moving frame 5 01 is slidingly connected, and the upper end of the second moving block 604 is fixedly connected to the second moving frame 602; the left end of the moving frame 501 is fixedly connected to the second servo motor 601, and the output end of the second servo motor 601 is fixedly connected to the third screw rod 603; the adjusting mechanism 7 includes a third servo motor 701, a fourth screw rod 702 and a third moving block 703, the second moving frame 602 is rotatably connected to the fourth screw rod 702, the circumferential surface of the fourth screw rod 702 is threadedly connected to the third moving block 703, the right end of the third moving block 703 is fixedly connected to the tool 8, the third moving block 703 is located inside the second moving frame 602, and is slidingly connected to the second moving frame 602, the rear end of the second moving frame 602 is fixedly connected to the third servo motor 701, and the output end of the third servo motor 701 is fixedly connected to the fourth screw rod 702.

[0039] When in use, the position of the tool 8 is first adjusted according to the position of the weld. When the position of the tool 8 is adjusted, the third servo motor 701 works. At this time, the third moving block 703 can be driven to move under the action of the fourth screw rod 702, and then the tool 8 can be driven to move, so that the position of the tool 8 can be changed, so that the tool 8 corresponds to the weld, which is convenient for the tool 8 to process the flash at the weld in the later stage; after the position of the tool 8 is adjusted, the hydraulic telescopic rod 502 is extended, and the movable frame 501 can be driven to move up stably under the cooperation of the limit bar 14 and the limit groove 15, and then the tool 8 can be driven to move up, so that the lower end surface of the tool 8 corresponds to the upper end surface of the workpiece, and then the second servo motor 601 works. At this time, the second moving block 604 can be driven to slide to the right inside the movable frame 501 under the cooperation of the third screw rod 603, and then the second moving frame 602 can be driven to move right. With the right movement of the second moving frame 602, the flash at the weld of the workpiece can be processed under the action of the tool 8.

[0040] A second slide rail 16 is fixedly connected to the upper end of the movable frame 501, and a limit seat 17 is slidably connected to the second slide rail 16. The limit seat 17 is slidably connected to the tool 8. During operation, as the tool 8 moves back and forth, the limit seat 17 is also driven to slide on the second slide rail 16, thereby facilitating the change of the position of the tool 8. At the same time, with the cooperation of the limit seat 17, it is also beneficial for the tool 8 to stably cut the flash at the weld.

[0041] Working principle:

[0042] When in use, the workpiece to be welded is placed on the placement table 9, and then the fourth servo motor 1001 works. At this time, with the cooperation of the bidirectional threaded rod 1002, the third moving block 703 can be driven to slide inside the placement table 9, thereby driving the clamping block 1004 to move. When the two clamping blocks 1004 move toward each other, the front and back clamping and fixing of the workpiece can be achieved; when the clamping block 1004 approaches the workpiece, the disc 1102 contacts the workpiece, and the disc 1102 is squeezed to move inside the circular groove 13, thereby driving the moving rod 1101 to move outward. As the moving rod 1101 moves outward, the sliding rod 1106 can be driven to slide inside the sliding groove 1108 with the cooperation of the connecting seat 1103 and the transmission rod 1104, thereby driving the clamping plate 1107 to approach the workpiece. In this way, under the action of the clamping plate 1107, the left and right positions of the workpiece can be clamped and fixed, thereby achieving the purpose of automatically clamping the workpiece. After the workpiece is clamped, the horizontal The forward and backward moving mechanism 3 works to drive the friction stir welding body 4 to move forward and backward so that the friction stir welding body 4 corresponds to the weld. After the friction stir welding body 4 corresponds to the weld, the power mechanism 12 works to provide power to the horizontal left and right moving mechanism 2, so that the horizontal left and right moving mechanism 2 drives the friction stir welding body 4 to move left and right, thus realizing the welding of the workpiece; after the workpiece is welded, the hydraulic telescopic rod 502 extends out, and with the cooperation of the limit bar 14 and the limit groove 15, the moving frame 501 can be driven to move up stably, and then the tool 8 can be driven to move up, so that the lower end face of the tool 8 corresponds to the upper end face of the workpiece, and then the second servo motor 601 works, and at this time, with the cooperation of the third screw rod 603, the second moving block 604 can be driven to slide to the right inside the moving frame 501, and then the second moving frame 602 can be driven to move right. With the right movement of the second moving frame 602, the flash at the weld of the workpiece can be processed under the action of the tool 8.

[0043] 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. An automatic clamping fixture for friction stir welding capable of removing flash, comprising a workbench (1), characterized in that: A horizontal left-right moving mechanism (2) is arranged on both the front and rear sides of the upper end of the workbench (1); a horizontal front-back moving mechanism (3) is arranged inside the horizontal left-right moving mechanism (2); a stir friction welding machine body (4) is arranged on the right end of the horizontal front-back moving mechanism (3); a power mechanism (12) is arranged on the left side of the lower end of the workbench (1); the power mechanism (12) is used to provide power to the horizontal left-right moving mechanism (2); A placement table (9) is fixedly connected to the middle position of the upper end of the workbench (1), and a first clamping mechanism (10) and a second clamping mechanism (11) are arranged on the upper end of the placement table (9), wherein the first clamping mechanism (10) is used to clamp the front and rear sides of the workpiece, and the second clamping mechanism (11) is used to clamp the left and right sides of the workpiece; A lifting mechanism (5) is arranged on the left side of the workbench (1), a pushing mechanism (6) is arranged inside the lifting mechanism (5), an adjusting mechanism (7) is arranged inside the upper end of the pushing mechanism (6), a tool (8) is arranged at the upper end of the lifting mechanism (5), and the pushing mechanism (6) is connected to the tool (8) via the adjusting mechanism (7).

2. The automatic clamping fixture for friction stir welding capable of removing flash according to claim 1, characterized in that: The horizontal left-right moving mechanism (2) comprises a bearing seat (201), a first screw rod (202), a first slide rail (203) and a first moving frame (204); the upper ends of the workbench (1) are fixedly connected to the bearing seats (201) on both sides; the first screw rod (202) is rotatably connected inside the bearing seat (201); the first screw rod (202) is threadedly connected to the first moving frame (204) on its circumferential surface; the first slide rail (203) is slidably connected inside the lower end of the first moving frame (204); and the first slide rail (203) is fixedly connected to the workbench (1).

3. The automatic clamping fixture for friction stir welding capable of removing flash according to claim 2, characterized in that: The power mechanism (12) comprises a fifth servo motor (1201), a first synchronous wheel (1202), a synchronous belt (1203) and a second synchronous wheel (1204); the lower end of the workbench (1) is fixedly connected to the fifth servo motor (1201); the output end of the fifth servo motor (1201) is fixedly connected to the first synchronous wheel (1202); the left end of the first screw rod (202) is fixedly connected to the second synchronous wheel (1204); the second synchronous wheel (1204) and the first synchronous wheel (1202) are connected via a synchronous belt (1203).

4. The automatic clamping fixture for friction stir welding capable of removing flash according to claim 2, characterized in that: The horizontal forward and backward moving mechanism (3) comprises a first servo motor (301), a first moving block (302) and a second screw rod (303); the first moving frame (204) is rotatably connected to the second screw rod (303); the circumferential surface of the second screw rod (303) is threadedly connected to the first moving block (302); the first moving block (302) is located inside the first moving frame (204) and is slidably connected to the first moving frame (204); the first moving block (302) is fixedly connected to the friction stir welding machine body (4); the first servo motor (301) is fixedly connected to the rear end of the first moving frame (204); and the output end of the first servo motor (301) is fixedly connected to the second screw rod (303).

5. The automatic clamping fixture for friction stir welding capable of removing flash according to claim 1, characterized in that: The first clamping mechanism (10) comprises a fourth servo motor (1001), a bidirectional threaded rod (1002), a fourth moving block (1003) and a clamping block (1004); the placing table (9) is rotatably connected to the bidirectional threaded rod (1002); the circumferential surface of the bidirectional threaded rod (1002) is threadedly connected to the fourth moving block (1003); the fourth moving block (1003) is located inside the placing table (9) and is slidably connected to the placing table (9); two fourth moving blocks (1003) are provided and symmetrically distributed on the bidirectional threaded rod (1002); the internal threads of the two fourth moving blocks (1003) are in opposite directions; the upper end of the fourth moving block (1003) is fixedly connected to the clamping block (1004); the rear end of the placing table (9) is fixedly connected to the fourth servo motor (1001); the output end of the fourth servo motor (1001) is fixedly connected to the bidirectional threaded rod (1002).

6. The automatic clamping fixture for friction stir welding capable of removing flash according to claim 5, characterized in that: The second clamping mechanism (11) comprises a moving rod (1101), a disc (1102), a connecting seat (1103), a transmission rod (1104), a spring (1105), a sliding rod (1106), a clamping plate (1107) and a sliding groove (1108); the moving rod (1101) is slidably connected inside the clamping block (1004); one end of the moving rod (1101) is fixedly connected to the disc (1102); the other end of the moving rod (1101) is fixedly connected to the connecting seat (1103); both ends of the connecting seat (1103) are rotatably connected to the transmission rod (1104); the end of the transmission rod (1104) away from the connecting seat (1103) is rotatably connected to the sliding rod (1106). ), one end of the sliding rod (1106) away from the clamping block (1004) is fixedly connected to a clamping plate (1107), and a sliding groove (1108) is provided on a side of the clamping block (1004) close to the connecting seat (1103), and the sliding groove (1108) and the sliding rod (1106) are slidably connected; a circular groove (13) is provided on a side of the clamping block (1004) close to the disk (1102), and the circular groove (13) corresponds to the disk (1102); a spring (1105) is provided on the circumferential surface of the moving rod (1101), one end of the spring (1105) is fixedly connected to the clamping block (1004), and the other end of the spring (1105) is fixedly connected to the connecting seat (1103).

7. The automatic clamping fixture for friction stir welding capable of removing flash according to claim 1, characterized in that: The lifting mechanism (5) comprises a hydraulic telescopic rod (502) and a movable frame (501); the lower end of the workbench (1) is fixedly connected to the hydraulic telescopic rod (502); the extended end of the hydraulic telescopic rod (502) passes through the upper end surface of the workbench (1) and is slidably connected to the workbench (1); the extended end of the hydraulic telescopic rod (502) is fixedly connected to the movable frame (501); the right end of the movable frame (501) is fixedly connected to a limiting groove (15); the limiting groove (15) is slidably connected to a limiting strip (14); and the limiting strip (14) is fixedly connected to the placement table (9).

8. The automatic clamping fixture for friction stir welding capable of removing flash according to claim 7, characterized in that: The pushing mechanism (6) comprises a second servo motor (601), a second moving frame (602), a third screw rod (603) and a second moving block (604); the third screw rod (603) is rotatably connected inside the moving frame (501); the circumferential surface of the third screw rod (603) is threadedly connected to the second moving block (604); the second moving block (604) is located inside the moving frame (501) and is slidably connected to the moving frame (501); the upper end of the second moving block (604) is fixedly connected to the second moving frame (602); the left end of the moving frame (501) is fixedly connected to the second servo motor (601); and the output end of the second servo motor (601) is fixedly connected to the third screw rod (603).

9. The automatic clamping fixture for friction stir welding capable of removing flash according to claim 8, characterized in that: The regulating mechanism (7) comprises a third servo motor (701), a fourth screw rod (702) and a third moving block (703); the second moving frame (602) is rotatably connected with the fourth screw rod (702); the circumferential surface of the fourth screw rod (702) is threadedly connected with the third moving block (703); the right end of the third moving block (703) is fixedly connected to the tool (8); the third moving block (703) is located inside the second moving frame (602) and is slidably connected to the second moving frame (602); the rear end of the second moving frame (602) is fixedly connected with the third servo motor (701); and the output end of the third servo motor (701) is fixedly connected to the fourth screw rod (702).

10. The automatic clamping fixture for friction stir welding capable of removing flash according to claim 9, characterized in that: The upper end of the movable frame (501) is fixedly connected to a second slide rail (16), the second slide rail (16) is slidably connected to a limit seat (17), and the limit seat (17) is slidably connected to the tool (8).

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