CN112264703A

CN112264703A - Position-adjustable aluminum alloy friction stir welding tool clamp

Info

Publication number: CN112264703A
Application number: CN202010962316.4A
Authority: CN
Inventors: 吴靖凡; 彭彪; 旷刘嘉辉
Original assignee: Hunan Kunding Cnc Technology Co ltd
Current assignee: Hunan Kunding Cnc Technology Co ltd
Priority date: 2020-09-14
Filing date: 2020-09-14
Publication date: 2021-01-26
Anticipated expiration: 2040-09-14
Also published as: CN112264703B

Abstract

The invention discloses a position-adjustable aluminum alloy friction stir welding tool clamp, which relates to the technical field of friction stir welding and comprises a base and a lifting platform mechanism, wherein a working groove is formed in the top end of the base, a limiting groove is formed in the side surface of the inner wall of the base, and the lifting platform mechanism is positioned in the working groove. The material edge fixing device comprises a fixed clamp mechanism, a sliding block, a connecting column, a round block, a movable column, a connecting rod, a threaded hole, a threaded rod, a knob, a rotating block, a clamping block and a sliding groove, wherein the fixed clamp mechanism moves to the position near the material along the inner wall of the sliding groove through the sliding block, the clamping block rotates to the position above the material through rotating the movable column, the threaded rod is driven to rotate through the rotating knob, the clamping block is pushed downwards to fix the material while the threaded rod rotates, and the edge fixing operation can be better performed on the special-shaped material through the mutual matching of the fixed clamp mechanisms and the sliding groove.

Description

Position-adjustable aluminum alloy friction stir welding tool clamp

Technical Field

The invention relates to the technical field of friction stir welding, in particular to a position-adjustable tool clamp for friction stir welding of aluminum alloy.

Background

The friction stir welding technology is used for welding aluminum alloy materials, the principle is that at normal temperature, two metals are fused with each other through local tissues of a body under the friction stir action of a stirring head to achieve the purpose of welding, and in the welding process, a workpiece needs to bear larger mechanical stress and thermal stress, so that the workpiece needs to be fixed by a tool.

The existing friction stir welding generally adopts simple tools such as a manual quick clamp and a pressing plate to realize clamping, the simple tools can only clamp the periphery of a material, the material with irregular shape and uneven surface cannot be completely fixed, and the material is easy to move in the welding process, so that the welding quality is influenced.

Therefore, the position-adjustable aluminum alloy friction stir welding tool clamp can be used for fixing the materials with irregular shapes and uneven surfaces and quickly splicing the materials with different thicknesses.

Disclosure of Invention

The invention aims to: in order to solve the problem, a position-adjustable aluminum alloy friction stir welding tool clamp is provided.

In order to achieve the purpose, the invention provides the following technical scheme: a position-adjustable aluminum alloy friction stir welding tool clamp comprises a base and a lifting platform mechanism, wherein a working groove is formed in the top end of the base, a limiting groove is formed in the side surface of the inner wall of the base, the lifting platform mechanism is located inside the working groove, a sliding groove is formed in the top end of the lifting platform mechanism, a fixed clamp mechanism is sleeved on the inner wall of the sliding groove, fixing columns are arranged at two ends of the top end of the base, which are located at the working groove, the outer walls of the fixing columns are connected with a first sliding rail and a second sliding rail near the top ends, the first sliding rail and the second sliding rail are respectively located right above two sides of the top end of the base, a first movable support and a second movable support are sleeved on the outer walls of the first sliding rail and the second sliding rail, the second movable support is located at one end of the first movable support, and a first electric push rod is arranged, the bottom that an electric putter output runs through a movable support, No. two movable supports is connected with pneumatic fixture mechanism, pneumatic fixture mechanism's top is connected with intake pipe, blast pipe, the blast pipe is located intake pipe one side, pneumatic fixture mechanism's inside is provided with flexible needle mechanism, one side outer wall that a movable support, No. two movable supports are close to a slide rail is provided with the locking bolt.

Preferably, the elevating platform mechanism includes workstation, spout, electric putter No. two and electric putter No. three, workstation, No. two workstations are located the inside of working groove, No. two workstations are located workstation one end, No. two electric putter, No. three electric putter are located the inside of base, No. two electric putter's output workstation bottom is connected, No. three electric putter outputs are connected with No. two workstation bottoms, the spout is located the top of workstation, No. two workstations, workstation, No. two workstations and the position of working groove inner wall side contact are provided with the stopper, the stopper cup joints each other with the spacing groove.

Preferably, the mounting fixture mechanism includes slider, spliced pole, activity post, connecting rod, screw hole, threaded rod, knob, turning block and clamp splice, the slider is located inside the spout, the spliced pole is located the top of slider, the activity post is located the top of spliced pole, the spliced pole runs through to activity post internal connection has the disk, the connecting rod is located activity post outer wall and is close to top position department, the screw hole is located the connecting rod top and runs through to the connecting rod bottom, the threaded rod cup joints each other with threaded hole inner wall, the knob is located the threaded rod top, the turning block is located the threaded rod bottom, the clamp splice cup joints each other with the turning block outer wall, the bottom of clamp splice is provided with the sheet rubber.

Preferably, pneumatic fixture mechanism includes anchor clamps case, bottom plate, hole groove, inlet port, exhaust hole and gas chamber, anchor clamps roof end is connected with electric putter's output, inlet port, exhaust hole are located anchor clamps roof end, inlet port, exhaust hole are located electric putter's one end No. one, the exhaust hole is located inlet port one side, the bottom plate is located anchor clamps bottom of the case portion, the hole groove is located the bottom plate bottom and runs through the bottom plate top, the gas chamber is located the inside of anchor clamps case, the inside gas chamber that is located of anchor clamps incasement portion below is provided with flexible needle mechanism.

Preferably, flexible needle mechanism includes connecting pipe, flexible needle, flexible storehouse, compression piece, compression spring and piston piece, the connecting pipe top is connected with the gas cabin bottom, flexible storehouse is located the connecting pipe inside, flexible storehouse runs through the connecting pipe top and extends and runs through to the gas cabin inside, compression piece, compression spring and piston piece are located flexible storehouse inside, compression spring is located compression piece top, the piston piece is located the compression spring top, flexible needle top is run through to flexible storehouse inside and is connected with compression piece bottom.

Preferably, the number of the telescopic needle mechanisms is multiple, the plurality of telescopic needle mechanisms form a rectangular array and are uniformly distributed in the fixture box, and the bottom ends of the telescopic needles penetrate through the hole grooves to the bottom of the bottom plate.

Preferably, the number of the limiting grooves is provided with a plurality of limiting grooves, and the plurality of limiting grooves are uniformly distributed on the side surface of the inner wall of the working groove.

Preferably, the outer wall of the air inlet hole is sleeved with the air inlet pipe, and the outer wall of the exhaust hole is sleeved with the exhaust pipe.

Preferably, the spout quantity is provided with a plurality ofly, and is a plurality of spout evenly distributed is on the top of workstation, spout No. one, the outer wall diameter of slider and the groove width phase-match of spout.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention can fix the material with the special-shaped edge by arranging the fixed clamp mechanism, the slide block, the connecting column, the round block, the movable column, the connecting rod, the threaded hole, the threaded rod, the knob, the rotating block, the clamping block, the rubber sheet and the chute, the fixed clamp mechanism moves to the position near the material along the inner wall of the chute through the slide block, the clamping block is rotated to the position above the material by rotating the movable column, the threaded rod is driven to rotate by the rotary knob, the clamping block is pushed downwards to fix the material while the threaded rod rotates, the rubber sheet at the bottom end of the clamping block can increase the friction force of the clamping block to enable the material to be fixed more firmly, and the surface of the material can be prevented from being scratched in the fixing operation process, the threaded rod rotates the clamping block through the rotating block and can be kept in a relatively static state with the material, and the edge of the special-shaped material can be better fixed through the mutual matching of the plurality of fixing clamp mechanisms and the sliding grooves;

2. the pneumatic fixture comprises a pneumatic fixture mechanism, a fixture box, a bottom plate, a hole groove, an air inlet hole, an exhaust hole, an air chamber, an air inlet pipe, an exhaust pipe, a telescopic needle mechanism, a connecting pipe, a telescopic needle, a telescopic bin, a compression block, a compression spring and a piston block, wherein the material with uneven surface can be fixed;

3. according to the invention, the material height adjustment can be realized by arranging the first workbench, the second electric push rod, the third electric push rod, the limiting block and the limiting groove, so that the rapid splicing of materials with different thicknesses can be realized, two materials to be welded are respectively placed on the first workbench and the second workbench, the first workbench and the second workbench can be driven by the second electric push rod and the third electric push rod to move up and down, so that the material height adjustment can be realized for the rapid splicing, the limiting block and the limiting groove are matched with each other to limit the movement of the workbench, and the workbench can move more stably.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a structural cross-sectional view of the present invention;

FIG. 3 is an enlarged view of the invention at position A in FIG. 1;

FIG. 4 is an enlarged view of the invention at position B in FIG. 1;

FIG. 5 is an enlarged view of the invention at position C of FIG. 2;

FIG. 6 is a schematic structural view of a tie down cleat mechanism of the present invention;

FIG. 7 is a cross-sectional exploded view of the tie down cleat mechanism of the present invention;

FIG. 8 is a cross-sectional exploded view of the pneumatic clamp mechanism of the present invention;

fig. 9 is a cross-sectional exploded view of the retracting needle mechanism of the present invention.

In the figure: 1. a base; 101. a working groove; 102. a limiting groove; 2. a lifting table mechanism; 201. a first workbench; 202. a second workbench; 203. a chute; 204. a second electric push rod; 205. a third electric push rod; 206. a limiting block; 3. a fixture mechanism is fixed; 301. a slider; 302. connecting columns; 3021. a round block; 303. a movable post; 304. a connecting rod; 305. a threaded hole; 306. a threaded rod; 307. a knob; 308. rotating the block; 309. a clamping block; 3091. a rubber sheet; 4. fixing a column; 5. a first slide rail; 6. a second sliding rail; 7. a first movable support; 8. a second movable support; 9. a first electric push rod; 10. a pneumatic clamp mechanism; 1001. a clamp box; 1002. a base plate; 1003. a hole groove; 1004. an air inlet; 1005. an exhaust hole; 1006. a gas cabin; 11. an air inlet pipe; 12. an exhaust pipe; 13. locking the bolt; 14. a retractable needle mechanism; 1401. a connecting pipe; 1402. a needle is retracted; 1403. a telescopic bin; 1404. compressing the block; 1405. a compression spring; 1406. a piston block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. The following describes an embodiment of the present invention based on its overall structure.

The first electric push rod (DSDG25), the second electric push rod (DSDG25) and the third electric push rod (DSDG25) mentioned in the invention can be obtained in the market or by private order.

Referring to fig. 1-9, a position-adjustable aluminum alloy friction stir welding tooling fixture comprises a base 1 and a lifting table mechanism 2, wherein a working groove 101 is formed in the top end of the base 1, a limiting groove 102 is formed in the side surface of the inner wall of the base 1, the lifting table mechanism 2 is located inside the working groove 101, a sliding groove 203 is formed in the top end of the lifting table mechanism 2, a fixing fixture mechanism 3 is sleeved on the inner wall of the sliding groove 203, fixing columns 4 are arranged at two ends of the working groove 101, the outer wall of each fixing column 4 is connected with a first sliding rail 5 and a second sliding rail 6 near the top end, the first sliding rail 5 and the second sliding rail 6 are respectively located right above two sides of the top end of the base 1, a first movable support 7 and a second movable support 8 are sleeved on the outer walls of the first sliding rail 5 and the second sliding rail 6, the second movable support 8 is located at one end of the first movable, No. two movable support 8's top is provided with electric putter 9 No. one, No. one electric putter 9 output runs through a movable support 7, No. two movable support 8's bottom is connected with pneumatic fixture mechanism 10, pneumatic fixture mechanism 10's top is connected with intake pipe 11, blast pipe 12 is located intake pipe 11 one side, pneumatic fixture mechanism 10's inside is provided with flexible needle mechanism 14, a movable support 7, No. two movable support 8 are provided with locking bolt 13 near one side outer wall of a slide rail 5.

Please refer to fig. 2 and 5, the lifting platform mechanism 2 includes a first working platform 201, a second working platform 202, a sliding chute 203, a second electric push rod 204 and a third electric push rod 205, the first working platform 201 and the second working platform 202 are located inside the working tank 101, the second working platform 202 is located at one end of the first working platform 201, the second electric push rod 204 and the third electric push rod 205 are located inside the base 1, the first working platform 201 is connected with the output end of the second electric push rod 204, the output end of the third electric push rod 205 is connected with the bottom end of the second working platform 202, the sliding chute 203 is located at the top end of the first working platform 201 and the second working platform 202, a limit block 206 is arranged at the position where the first working platform 201 and the second working platform 202 contact with the inner wall side surface of the working tank 101, the limit block 206 is sleeved with the limit groove 102, and the first working platform 201, the second working platform 202 and the third electric push rod 205 can, The second worktable 202 can be adjusted vertically to better perform welding operation between materials with different thicknesses.

Please refer to fig. 3, fig. 6 and fig. 7, the fixing clamp mechanism 3 includes a sliding block 301, a connecting column 302, a movable column 303, a connecting rod 304, a threaded hole 305, a threaded rod 306, a knob 307, a rotating block 308 and a clamping block 309, the sliding block 301 is located inside the sliding slot 203, the connecting column 302 is located at the top end of the sliding block 301, the movable column 303 is located at the top end of the connecting column 302, the connecting column 302 penetrates through the movable column 303 and is connected with a round block 3021, the connecting rod 304 is located at the position of the outer wall of the movable column 303 close to the top end, the threaded hole 305 is located at the top end of the connecting rod 304 and penetrates to the bottom end of the connecting rod 304, the threaded rod 306 is sleeved with the inner wall of the threaded hole 305, the knob 307 is located at the top end of the threaded rod 306, the rotating block 308 is located at the bottom end of, through rotating knob 307 and driving threaded rod 306 to rotate, through mutually supporting of threaded rod 306 and screw hole 305, threaded rod 306 can move down when pivoted, can promote clamp splice 309 and material in close contact with and fix the material, and the rubber sheet 3091 of clamp splice 309 bottom can increase the frictional force of clamp splice 309, and avoids producing the fish tail to the material surface.

Please refer to fig. 8, the pneumatic clamping mechanism 10 includes a clamping box 1001, a bottom plate 1002, a hole slot 1003, an air inlet 1004, an air outlet 1005 and an air chamber 1006, the top end of the clamping box 1001 is connected to the output end of the electric push rod 9, the air inlet 1004 and the air outlet 1005 are located at the top end of the clamping box 1001, the air inlet 1004 and the air outlet 1005 are located at one end of the electric push rod 9, the air outlet 1005 is located at one side of the air inlet 1004, the bottom plate 1002 is located at the bottom end of the clamping box 1001, the hole slot 1003 is located at the bottom end of the bottom plate 1002 and penetrates through the top end of the bottom plate 1002, the air chamber 1006 is located inside the clamping box 1001, a retractable needle mechanism 14 is arranged inside the clamping box 1001 and below the air chamber 1006, the clamping mechanism can be driven to move up and down by the electric push rod.

Please refer to fig. 9, the retractable needle mechanism 14 includes a connection tube 1401, a retractable needle 1402, a retractable bin 1403, a compression block 1404, a compression spring 1405 and a piston block 1406, the top end of the connection tube 1401 is connected to the bottom end of the air chamber 1006, the retractable bin 1403 is located inside the connection tube 1401, the retractable bin 1403 penetrates through the top end of the connection tube 1401 and extends to penetrate through the air chamber 1006, the compression block 1404, the compression spring 1405 and the piston block 1406 are located inside the retractable bin 1403, the piston block 1406 is located at the top end of the compression spring 1405, the top end of the retractable needle 1402 penetrates through the interior of the retractable bin 1403 and is connected to the bottom end of the compression block 1404, when the material is fixed, the bottom end of the retractable needle 1402 contacts and is pressed by the material, the retractable needle 1402 presses the compression spring by the compression block 1404 and pushes the piston block 1406 upwards, this structure can make the retractable needle 1402 tightly adhere to the surface of the material, when the air chamber 1006 is filled with air, gas will enter the bellows 1403 and exert a downward force on the piston block 1406, and the bellows needle 1402 will hold the material by the compression spring 1405 and the compression block 1404.

Please refer to fig. 8, the number of the retractable needle mechanisms 14 is plural, the plural retractable needle mechanisms 14 are uniformly distributed in the fixture box 1001 in a rectangular array, the bottom end of the retractable needle 1402 penetrates through the hole groove 1003 to the bottom of the bottom plate 1002, and the plural retractable needle mechanisms 14 are matched with each other, so that the material to be welded with uneven surface can be better fixed.

Please refer to fig. 1, the number of the limiting grooves 102 is plural, the plural limiting grooves 102 are uniformly distributed on the inner wall side of the working groove 101, and the first working platform 201 and the second working platform 202 can be limited by the mutual matching of the limiting block 206 and the limiting grooves 102.

Referring to fig. 4 and fig. 1, the outer wall of the air inlet 1004 is sleeved with the air inlet pipe 11, and the outer wall of the air outlet 1005 is sleeved with the air outlet pipe 12, so that the pneumatic clamp mechanism 10 can be pressurized and depressurized.

Please refer to fig. 1 and fig. 3, the number of the sliding grooves 203 is plural, the plural sliding grooves 203 are uniformly distributed at the top ends of the first working platform 201 and the sliding grooves 203, the diameter of the outer wall of the sliding block 301 matches with the width of the sliding grooves 203, and the fixing clamp mechanism 3 can move along the inner wall of the sliding groove 203 with the sliding block 301 as the center.

The working principle is as follows: when the clamp is used, two materials to be welded can be respectively placed on a first working table 201 and a second working table 202, the welding seam positions of the materials are positioned at the interface positions of the first working table 201 and the second working table 202, the edges of the materials can be fixed through a fixed clamp mechanism 3, if the thicknesses of the two materials are different, the heights of the first working table 201 and the second working table 202 can be adjusted through a second electric push rod 204 and a third electric push rod 205, the surfaces of the two materials are flush so as to be convenient for welding, the two working tables can be limited through the matching of a limiting block 206 and a limiting groove 102 in the process, the working tables can run more stably, a locking bolt 13 can be unscrewed after the welding seams are aligned, a pneumatic clamp mechanism 10 can be moved to the upper part of the materials by pushing a first movable support 7 and a second movable support 8, the pneumatic clamp mechanism 10 can be pushed through a first electric push rod 9 to be in close contact with the surfaces of the materials so as to fix the materials, the welding device can be started to weld materials after the materials are completely fixed, when the fixed clamp mechanism 3 clamps the edges of the materials, the fixed clamp mechanism 3 can move to the position near the materials along the inner wall of the sliding groove 203 through the sliding block 301, then the movable column 303 can be rotated according to the conditions of the edges of the materials to enable the clamping block 309 to rotate to the position above the materials, the threaded rod 306 is driven to rotate through the rotating knob 307, the clamping block 309 can be pushed downwards to fix the materials while the threaded rod 306 rotates, the friction force of the clamping block 309 can be increased through the rubber sheet 3091 at the bottom end of the clamping block 309 to enable the clamping block 309 to be fixed more firmly, the surfaces of the materials can be prevented from being scratched in the fixing operation process, the threaded rod 306 can rotate the clamping block 309 and the materials to be kept in a relatively static state through the rotating block 308, the edges of the special-shaped materials can be better fixed through the mutual matching of the fixed clamp mechanisms 3 and, the fixing operation of the pneumatic fixture mechanism 10 is completed by mutually matching with the telescopic needle mechanism 14, when the first electric push rod 9 pushes the pneumatic fixture mechanism 10 to move towards the material, the telescopic needle 1402 firstly contacts and is extruded with the material, the telescopic needle 1402 extrudes the compression spring 1405 through the compression block 1404 and pushes the piston block 1406 upwards, the telescopic needle 1402 can be completely attached to the surface of the material through mutual matching of a plurality of telescopic needle mechanisms 14, the pneumatic fixture mechanism can fix the material with uneven surface, then the air is filled into the air chamber 1006 and pressurized through mutual matching of the air pump, the air enters the telescopic bin 1403 to apply downward extrusion force to the piston block 1406, the telescopic needle 1402 can be locked through transmission of the compression spring 1405 and the compression block 1404, the material can be completely fixed, and the material can be effectively prevented from being generated in the welding process through mutual matching of the pneumatic fixture mechanism 10 and the fixed fixture mechanism 3 The raw material moves, the welding quality is effectively improved, the pressure in the gas cabin 1006 is relieved through the exhaust pipe 12 and the exhaust hole 1005 after the materials are welded, so that secondary welding operation can be carried out, and then the pneumatic clamp mechanism 10 can be loosened by reversely starting the first electric push rod 9.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a position adjustable aluminum alloy friction stir welding's frock clamp, includes base (1) and elevating platform mechanism (2), its characterized in that: the lifting platform is characterized in that a working groove (101) is arranged at the top end of the base (1), a limiting groove (102) is arranged on the side surface of the inner wall of the base (1), the lifting platform mechanism (2) is positioned inside the working groove (101), a sliding groove (203) is arranged at the top end of the lifting platform mechanism (2), a fixed clamp mechanism (3) is sleeved on the inner wall of the sliding groove (203), fixed columns (4) are arranged at the two ends of the top end of the base (1) and positioned at the top end of the working groove (101), a first sliding rail (5) and a second sliding rail (6) are connected to the outer wall of each fixed column (4) close to the top end, the first sliding rail (5) and the second sliding rail (6) are respectively positioned right above the two sides of the top end of the base (1), a first movable support (7) and a second movable support (8) are sleeved on the outer walls of the first sliding rail (5) and the second sliding rail, the top of a movable support (7) No. two movable supports (8) is provided with electric putter (9) No. one, the bottom that an electric putter (9) output runs through a movable support (7), No. two movable supports (8) is connected with pneumatic fixture mechanism (10), and the top of pneumatic fixture mechanism (10) is connected with intake pipe (11), blast pipe (12) are located intake pipe (11) one side, the inside of pneumatic fixture mechanism (10) is provided with flexible needle mechanism (14), one side outer wall that a movable support (7), No. two movable supports (8) are close to a slide rail (5) is provided with locking bolt (13).

2. The position-adjustable aluminum alloy friction stir welding tool clamp of claim 1, which is characterized in that: the lifting platform mechanism (2) comprises a first working platform (201), a second working platform (202), a sliding groove (203), a second electric push rod (204) and a third electric push rod (205), the first working platform (201) and the second working platform (202) are positioned in the working groove (101), the second working platform (202) is positioned at one end of the first working platform (201), the second electric push rod (204) and the third electric push rod (205) are positioned in the base (1), the first working platform (201) is connected with the bottom end of the output end of the second electric push rod (204), the third electric push rod (205) is connected with the bottom end of the second working platform (202), the sliding groove (203) is positioned at the top ends of the first working platform (201) and the second working platform (202), and a limiting block (206) is arranged at the position where the first working platform (201) and the second working platform (202) are in contact with the side surface of the inner wall of the working groove (101), the limiting block (206) is sleeved with the limiting groove (102).

3. The position-adjustable aluminum alloy friction stir welding tool clamp of claim 1, which is characterized in that: the fixed clamp mechanism (3) comprises a sliding block (301), a connecting column (302), a movable column (303), a connecting rod (304), a threaded hole (305), a threaded rod (306), a knob (307), a rotating block (308) and a clamping block (309), wherein the sliding block (301) is positioned inside a sliding groove (203), the connecting column (302) is positioned at the top end of the sliding block (301), the movable column (303) is positioned at the top end of the connecting column (302), the connecting column (302) penetrates through the movable column (303) and is internally connected with a round block (3021), the connecting rod (304) is positioned at the position, close to the top end, of the outer wall of the movable column (303), the threaded hole (305) is positioned at the top end of the connecting rod (304) and penetrates through to the bottom end of the connecting rod (304), the threaded rod (306) is mutually sleeved with the inner wall of the threaded hole (305), the knob (307) is positioned at the top, the clamping block (309) and the outer wall of the rotating block (308) are sleeved with each other, and a rubber sheet (3091) is arranged at the bottom end of the clamping block (309).

4. The position-adjustable aluminum alloy friction stir welding tool clamp of claim 1, which is characterized in that: pneumatic fixture mechanism (10) is including anchor clamps case (1001), bottom plate (1002), hole groove (1003), inlet port (1004), exhaust hole (1005) and gas chamber (1006), anchor clamps case (1001) top is connected with electric putter's (9) output, inlet port (1004), exhaust hole (1005) are located anchor clamps case (1001) top, inlet port (1004), exhaust hole (1005) are located the one end of electric putter (9), exhaust hole (1005) are located inlet port (1004) one side, bottom plate (1002) are located anchor clamps case (1001) bottom, hole groove (1003) are located bottom plate (1002) bottom and run through bottom plate (1002) top, gas chamber (1006) are located the inside of anchor clamps case (1001), anchor clamps case (1001) inside is located gas chamber (1006) below and is provided with telescopic needle mechanism (14).

5. The position-adjustable aluminum alloy friction stir welding tool clamp of claim 1, which is characterized in that: the telescopic needle mechanism (14) comprises a connecting pipe (1401), a telescopic needle (1402), a telescopic bin (1403), a compression block (1404), a compression spring (1405) and a piston block (1406), the top end of the connecting pipe (1401) is connected with the bottom end of the air chamber (1006), the telescopic bin (1403) is located inside the connecting pipe (1401), the telescopic bin (1403) penetrates through the top end of the connecting pipe (1401) and extends to the inside of the air chamber (1006), the compression block (1404), the compression spring (1405) and the piston block (1406) are located inside the telescopic bin (1403), the compression spring (1405) is located at the top end of the compression block (1404), the piston block (1406) is located at the top end of the compression spring (1405), and the top end of the telescopic needle (1402) penetrates to the inside of the telescopic bin (1403) and is connected with the bottom end of the compression block (1404).

6. The position-adjustable aluminum alloy friction stir welding tool clamp of claim 5, which is characterized in that: the number of the telescopic needle mechanisms (14) is multiple, the telescopic needle mechanisms (14) are uniformly distributed in the clamp box (1001) in a rectangular array, and the bottom ends of the telescopic needles (1402) penetrate through the hole grooves (1003) to the bottom of the bottom plate (1002).

7. The position-adjustable aluminum alloy friction stir welding tool clamp of claim 1, which is characterized in that: the number of the limiting grooves (102) is multiple, and the limiting grooves (102) are uniformly distributed on the side face of the inner wall of the working groove (101).

8. The position-adjustable aluminum alloy friction stir welding tool clamp of claim 5, which is characterized in that: the outer wall of the air inlet hole (1004) is sleeved with the air inlet pipe (11), and the outer wall of the exhaust hole (1005) is sleeved with the exhaust pipe (12).

9. The position-adjustable aluminum alloy friction stir welding tool clamp of claim 2, which is characterized in that: the quantity of spout (203) is provided with a plurality ofly, and is a plurality of spout (203) evenly distributed is on the top of workstation (201), spout (203), the outer wall diameter of slider (301) and the groove width phase-match of spout (203).