CN108788445B

CN108788445B - Friction stir welding equipment for static shaft shoulder

Info

Publication number: CN108788445B
Application number: CN201810903474.5A
Authority: CN
Inventors: 李志刚; 李叶林; 杨小高; 罗佑新
Original assignee: Hunan University of Arts and Science
Current assignee: Hunan University of Arts and Science
Priority date: 2018-08-09
Filing date: 2018-08-09
Publication date: 2020-06-12
Anticipated expiration: 2038-08-09
Also published as: CN108788445A

Abstract

The invention relates to the technical field of friction stir welding, and discloses friction stir welding equipment for a static shaft shoulder. This friction stir welding equipment for static shoulder, through setting up square mouth and collecting box, because the bottom of stirring needle body carries out friction weld to the work piece when, the waste material that produces this moment will pass the clearance between static shoulder body and the stirring needle body and enter into the collecting box, because the cross-sectional area of square mouth side equals with the cross street area of collecting box side, thereby can take out the collecting box from static shoulder body, the problem that the waste material in the static shoulder body is difficult to handle has been prevented, the too much rotation to the stirring needle body of static shoulder body waste material has also been avoided simultaneously to produce the influence, the practicality of this friction stir welding equipment has been increased.

Description

Friction stir welding equipment for static shaft shoulder

Technical Field

The invention relates to the technical field of friction stir welding, in particular to friction stir welding equipment for a static shaft shoulder.

Background

Friction stir welding is a solid phase connection technology invented in 1991, and is particularly suitable for welding low-melting-point alloys such as aluminum and the like. Friction stir welding utilizes friction heat generated by friction between a shaft shoulder and a stirring needle and a workpiece to enable materials near a welding joint to reach a plastic state, the material flowability is increased, when a stirring head moves forwards, the plasticized materials are moved to the rear of the stirring head under the extrusion of the shaft shoulder and the stirring action of the stirring needle, the materials are cooled to form the welding joint, the materials are not melted in the welding process, and the highest temperature is about 80% of the melting point of the welded materials.

The normal friction stir welding is unstable in the welding process and has serious flash defects, so that the static shaft shoulder friction stir welding is proposed to improve the problems, and the auxiliary static shaft shoulder is added, thereby reducing the flash, meanwhile, the plasticized material is inhibited from extruding from the two sides of the rotating stirring pin, the defects of holes and the like are prevented from forming, but when the existing static shaft shoulder stirring friction welding is in operation, because a gap exists between the static shaft shoulder and the stirring pin, some waste materials enter the gap in the welding process, not only causes difficulty in the later cleaning work, but also influences the rotation of the stirring pin due to excessive accumulation of the waste materials in the static shaft shoulder, and the stirring pin is contacted with the outer surface of the workpiece for a long time, so that the friction damage of the stirring pin is high and the stirring pin is easy to damage, because the stirring pin is fixedly arranged, the stirring pin is inconvenient to disassemble and replace by maintenance personnel.

Disclosure of Invention

The invention provides friction stir welding equipment for a static shaft shoulder, which has the advantages of being convenient for removing waste materials and disassembling and replacing a stirring needle, solves the problems that the common friction stir welding is unstable in the welding process and has serious flash defects, and provides improvement on the friction stir welding of the static shaft shoulder aiming at the problems, so that an auxiliary static shaft shoulder is added, not only can the flash be reduced, but also the extrusion of plasticized materials from two sides of a rotating stirring needle is inhibited, and the formation of defects such as holes and the like is prevented, but when the conventional friction stir welding of the static shaft shoulder is operated, because a gap exists between the static shaft shoulder and the stirring needle, some waste materials enter the gap in the welding process, the difficulty in later-stage cleaning work is caused, meanwhile, the excessive accumulation of the waste materials in the static shaft shoulder can influence the rotation of the stirring needle, and the stirring needle is contacted with the outer surface of a workpiece for a long time, therefore, the friction damage of the stirring needle is high, the stirring needle is easy to damage, and the stirring needle is fixedly arranged, so that maintenance personnel are inconvenient to detach and replace the stirring needle.

The invention provides the following technical scheme: the friction stir welding equipment for the static shaft shoulder comprises a base and a rectangular box, wherein a top block is fixedly mounted in the middle of the top end of the base, a transverse plate is fixedly mounted at the top of the top block, a control unit is fixedly mounted on the front surface of the top block, right-angle frames are fixedly mounted on two sides of the transverse plate, a moving frame is fixedly mounted between the tops of the right-angle frames, the moving block is sleeved on the inside of the moving frame, a connecting block is fixedly mounted at the bottom of the moving block, the bottom of the connecting block penetrates through the moving frame and extends to the lower side of the moving frame, a power box is fixedly mounted at the bottom of the connecting block, a driving motor is fixedly mounted inside the power box, a rotating shaft is fixedly sleeved at one end of an output shaft of the driving motor, one end of the rotating shaft penetrates through the power box and extends to the lower side of the power box and is located inside, a cross frame positioned on the back of the power box is fixedly installed between the two right-angle frames, short blocks positioned below the cross frame are fixedly installed on the two sides of the power box, right-angle rods are fixedly installed at one ends of the short blocks, idler wheels positioned in the cross frame are movably installed on the back of the top ends of the right-angle rods, the outer surfaces of the idler wheels are movably connected with the inner wall of the cross frame, the number of the right-angle rods is two, a static shaft shoulder body positioned below the rectangular box is fixedly installed between the bottoms of the two right-angle rods, an installation box positioned below the rectangular box is fixedly installed at the top of the static shaft shoulder body, vertical blocks are fixedly installed on the two sides of the top of the inner cavity of the installation box, telescopic rods are movably sleeved inside the vertical blocks, one ends of the telescopic rods penetrate through the vertical blocks and extend to the opposite sides of the vertical blocks, and the other ends of the telescopic rods penetrate through the vertical, the outer surface of the telescopic rod is movably sleeved with a flexible spring located between the contact block and the outer side of the vertical block, one end of the flexible spring is fixedly connected with the contact block, and the other end of the flexible spring is fixedly connected with the outer side of the vertical block.

Preferably, a round opening is formed in the top of the rectangular box, a side block located inside the rectangular box is fixedly mounted on the outer surface of the rotating shaft, and mounting blocks located on two sides of the rotating shaft and the rear side of the side block are fixedly mounted on the rear side portion of the inner cavity of the rectangular box.

Preferably, the pull rod is sleeved in the side block in a movable mode, one end of the pull rod penetrates through the side block and the rectangular box in sequence and extends to the outside of the rectangular box, the pull button is fixedly installed at one end of the pull rod, and the other end of the pull rod penetrates through the side block and the installation block in sequence and extends to the inside of the installation block.

Preferably, the outer surface of the pull rod is fixedly sleeved with the lattice block positioned on the front side of the side block, the outer surface of the pull rod is movably sleeved with the rigid spring positioned between the front side part of the rectangular box inner cavity and the front side part of the lattice block, one end of the rigid spring is fixedly connected with the front side part of the rectangular box inner cavity, and the other end of the rigid spring is fixedly connected with the front side part of the lattice block.

Preferably, the front side part of the inner cavity of the rectangular box is fixedly provided with a square block positioned between the pull rods, and the stirring needle body positioned below the rotating shaft is movably sleeved in the rectangular box.

Preferably, the bottom of the stirring pin body penetrates through the rectangular box, the mounting box and the static shaft shoulder body in sequence and extends to the lower portion of the static shaft shoulder body, the outer surface of the stirring pin body is movably connected with one side, corresponding to the contact block, of the outer surface of the stirring pin body, and a threaded rod is sleeved on the back face of the rectangular box in a threaded manner.

Preferably, one end of the threaded rod penetrates through the rectangular box and extends to the outside of the rectangular box, a round button is fixedly mounted on the threaded rod, and the other end of the threaded rod penetrates through the stirring pin body and the square block and extends to the inside of the square block.

Preferably, square openings are formed in two sides of the static shaft shoulder body, a connecting rod is movably sleeved inside the static shaft shoulder body, and a pull block is fixedly mounted outside the static shaft shoulder body and penetrates through the square openings.

Preferably, the other end of the connecting rod penetrates through the square opening and extends to the inside of the static shaft shoulder body, the collecting boxes are fixedly mounted on the other end of the connecting rod, the number of the collecting boxes is two, and one side, corresponding to the two collecting boxes, of each collecting box is movably connected with the outer surface of the stirring pin body.

The invention has the following beneficial effects:

1. this friction stir welding equipment for static shoulder, through setting up square mouth and collecting box, because the bottom of stirring needle body carries out friction weld to the work piece when, the waste material that produces this moment will pass the clearance between static shoulder body and the stirring needle body and enter into the collecting box, because the cross-sectional area of square mouth side equals with the cross street area of collecting box side, thereby can take out the collecting box from static shoulder body, the problem that the waste material in the static shoulder body is difficult to handle has been prevented, the too much rotation to the stirring needle body of static shoulder body waste material has also been avoided simultaneously to produce the influence, the practicality of this friction stir welding equipment has been increased.

2. This static friction stir welding equipment for shaft shoulder through setting up square, threaded rod and round button, because the inside of square and stirring needle body all is equipped with the screw thread with threaded rod surface looks adaptation to rotatory round button can make the threaded rod break away from the inside of square and stirring needle body, and then can change the stirring needle body, thereby has avoided the stirring needle body to lead to the inconvenient dismantlement of maintainer and change for fixed mounting, thereby has increased this friction stir welding equipment's practicality.

3. This static friction stir welding equipment for shaft shoulder through setting up pull rod, rigid spring and installation piece, after the stirring needle body takes out, because rigid spring's elastic action can stimulate the knob and can make the other end of pull rod break away from in side piece and the installation piece this moment, and rectangle case and side piece are the separation state this moment, and maintenance personal can take out the rectangle case and maintain driving motor to this friction stir welding equipment's practicality has been increased.

Drawings

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

FIG. 2 is a schematic structural view of the mounting box of the present invention;

FIG. 3 is a schematic sectional front view of a rectangular tank of the present invention;

FIG. 4 is a schematic top view of the rectangular box of the present invention;

FIG. 5 is a schematic top view of the stationary shoulder of the present invention;

FIG. 6 is a side sectional structural schematic view of the collection tank of the present invention.

In the figure: 1. a base; 2. a top block; 3. a control unit; 4. a transverse plate; 5. a right-angle frame; 6. a motion frame; 7. a motion block; 8. connecting blocks; 9. a power box; 10. a rotating shaft; 11. a rectangular box; 12. a cross frame; 13. short blocks; 14. a right-angle rod; 15. a roller; 16. a stationary shoulder body; 17. installing a box; 18. a vertical block; 19. a telescopic rod; 20. a contact block; 21. a flexible spring; 22. a drive motor; 23. a side block; 24. mounting blocks; 25. a pull rod; 26. pulling the button; 27. grid blocks; 28. a rigid spring; 29. a square block; 30. a threaded rod; 31. a round button; 32. a pin body; 33. a round mouth; 34. square opening; 35. a connecting rod; 36. a collection box; 37. and (5) pulling the 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.

Referring to fig. 1-6, a friction stir welding device for a stationary shoulder comprises a base 1 and a rectangular box 11, wherein the distance between the bottom of the rectangular box 11 and the top of the mounting box 17 can be installed according to actual conditions, so that the rectangular box 11 can be separated from a side block 23, a square block 29 positioned between pull rods 25 is fixedly installed on the front side portion of the inner cavity of the rectangular box 11, a stirring pin body 32 positioned below a rotating shaft 10 is movably sleeved in the rectangular box 11, threads formed in the stirring pin body 32 and the square block 29 are matched with threads on the outer surface of a threaded rod 30, so that the threaded rod 30 can fix the stirring pin body 32, and the stirring pin body 32 can be disassembled and replaced conveniently, the bottom end of the stirring pin body 32 sequentially penetrates through the rectangular box 11, the mounting box 17 and the stationary shoulder body 16 and extends to the lower portion of the stationary shoulder body 16, the outer surface of the stirring pin body 32 is movably connected with one side corresponding to the contact block 20, a threaded rod 30 is sleeved on the back surface of the rectangular box 11 in a threaded manner, one end of the threaded rod 30 penetrates through the rectangular box 11 and extends to the outside of the rectangular box 11 and is fixedly provided with a round button 31, the other end of the threaded rod 30 penetrates through the stirring pin body 32 and the square block 29 and extends to the inside of the square block 29, a round opening 33 is formed in the top of the rectangular box 11, the round opening 33 can enable the side block 23 to be separated from the rectangular box 11, the length of the round opening 33 is larger than that between the side blocks 23, the outer surface of the rotating shaft 10 is fixedly provided with the side block 23 positioned in the rectangular box 11, the inner part of the side block 23 is movably sleeved with a pull rod 25, the outer surface of the pull rod 25 is fixedly sleeved with a grid block 27 positioned on the front side of the side block 23, the outer surface of the pull rod 25 is movably, one end of a rigid spring 28 is fixedly connected with the front side part of the inner cavity of the rectangular box 11, the other end of the rigid spring 28 is fixedly connected with the front side part of the lattice block 27, one end of a pull rod 25 sequentially penetrates through the side block 23 and the rectangular box 11 and extends to the outside of the rectangular box 11, a pull button 26 is fixedly installed on the other end of the pull rod 25 sequentially penetrates through the side block 23 and the installation block 24 and extends to the inside of the installation block 24, the rear side part of the inner cavity of the rectangular box 11 is fixedly provided with the installation blocks 24 which are positioned on both sides of the rotating shaft 10 and the rear side part of the side block 23, the middle part of the top end of the base 1 is fixedly provided with a top block 2, the top part of the top block 2 is fixedly provided with a transverse plate 4, the inside of the transverse plate 4 is provided with long openings which are positioned on both sides of the stirring pin body 32, the long openings have the function of enabling the, the front of the top block 2 is fixedly provided with a control unit 3, two sides of the transverse plate 4 are fixedly provided with right-angle frames 5, the number of the right-angle frames 5 is two, a moving frame 6 is fixedly arranged between the tops of the two right-angle frames 5, a moving block 7 is movably sleeved in the moving frame 6, the bottom of the moving block 7 is fixedly provided with a connecting block 8, the bottom of the connecting block 8 penetrates through the moving frame 6 and extends to the lower part of the moving frame 6, and is fixedly provided with a power box 9, the inside of the power box 9 is fixedly provided with a driving motor 22, the model of the driving motor 22 is Y100L-2, one end of an output shaft of the driving motor 22 is fixedly sleeved with a rotating shaft 10, one end of the rotating shaft 10 penetrates through the power box 9 and extends to the lower part of the power box 9 and is positioned in the rectangular box 11, a transverse frame 12 positioned at the back of the power box 9 is fixedly arranged between the two right-angle frames 5, one end of the short block 13 is fixedly provided with a right-angle rod 14, the back surface of the top end of the right-angle rod 14 is movably provided with a roller 15 positioned inside the cross frame 12, when the motion block 7 drives the power box 9 to move left and right, the right-angle rod 14 can also drive the roller 15 to move between the inner walls of the cross frame 12, so that the power box 9 is more stable in the motion process, the outer surface of the roller 15 is movably connected with the inner wall of the cross frame 12, the number of the right-angle rods 14 is two, a static shaft shoulder body 16 positioned below the rectangular box 11 is fixedly arranged between the bottoms of the two right-angle rods 14, square openings 34 are respectively arranged at the two sides of the static shaft shoulder body 16, as the cross sectional area of the side surface of each square opening 34 is equal to that of the side surface of the collection box 36, the collection box 36 can be taken out of the static shaft shoulder body 16 by the pulling block 37, and as the arc-, so that the waste material entering the gap between the static shaft shoulder body 16 and the stirring pin body 32 finally enters the stirring pin body 32, the connecting rod 35 is movably sleeved in the static shaft shoulder body 16, the other end of the connecting rod 35 penetrates through the square opening 34 and extends to the inside of the static shaft shoulder body 16, the collecting boxes 36 are fixedly installed, the number of the collecting boxes 36 is two, one side corresponding to the two collecting boxes 36 is movably connected with the outer surface of the stirring pin body 32, one end of the connecting rod 35 penetrates through the square opening 34 and extends to the outside of the static shaft shoulder body 16, the pulling block 37 is fixedly installed, the mounting box 17 positioned below the rectangular box 11 is fixedly installed at the top of the static shaft shoulder body 16, the vertical blocks 18 are fixedly installed at both sides of the top of the inner cavity of the mounting box 17, the telescopic rods 19 are movably sleeved in the vertical blocks 18, one end of the telescopic rods 19 penetrates through the vertical blocks 18 and extends to the opposite, the other end of telescopic link 19 runs through riser 18 and extends to riser 18 corresponding one side and fixed mounting and has contact piece 20, the surface activity of telescopic link 19 has cup jointed the flexible spring 21 that is located between contact piece 20 and the riser 18 outside, flexible spring 21 makes contact piece 20 corresponding one side spacing to the probe body 32 through the cooperation with contact piece 20 and telescopic link 19, thereby make probe body 32 more stable at the pivoted in-process, and the friction stir welding's to the work piece effect is more showing, flexible spring 21's one end and contact piece 20 fixed connection, flexible spring 21's the other end and riser 18's outside fixed connection.

When the friction stir welding device works, an operator can start the driving motor 22 through the control unit 3, and drive the driving motor 22 to move left and right through the moving block 7, when the driving motor 22 operates, the rotating shaft 10 drives the stirring pin body 32 to rotate through the rectangular box 11, and friction welding is carried out on a workpiece, when the friction stir welding device finishes operating, the operator can pull the pulling block 37 to take out the collecting box 36 from the square opening 34, and treat waste materials in the collecting box 36, meanwhile, when the stirring pin body 32 is seriously worn, the operator can control the stirring pin body 32 to move to a position right above a long opening formed in the transverse plate 4 through the control unit 3, and the other end of the threaded rod 30 is separated from the square block 29 and the stirring pin body 32 through the rotating round button 31, at the moment, the stirring pin body 32 falls down through the long opening due to the action of gravity, and the operator can pull the pulling button 26 to separate the other end of the pulling rod 25 from the side block 23 and the mounting block 24, the rectangular box 11 can now be separated from the side blocks 23, so that the rectangular box 11 can be removed and the drive motor 22 cleaned and serviced.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a static friction stir welding equipment for shaft shoulder, includes base (1) and rectangle case (11), its characterized in that: the middle fixed mounting on base (1) top has kicking block (2), the top fixed mounting of kicking block (2) has diaphragm (4), the positive fixed mounting of kicking block (2) has control unit (3), the equal fixed mounting in both sides of diaphragm (4) has right angle frame (5), the quantity of right angle frame (5) is two, two fixed mounting has motion frame (6) between the top of right angle frame (5), motion block (7) have been cup jointed in the inside activity of motion frame (6), the bottom fixed mounting of motion block (7) has connecting block (8), the bottom of connecting block (8) passes motion frame (6) and extends to the below of motion frame (6) and fixed mounting has headstock (9), the inside fixed mounting of headstock (9) has driving motor (22), the fixed cover of the one end of driving motor (22) output shaft has been cup jointed axis of rotation (10), the one end of axis of rotation (10) runs through headstock (9) and extends to the below of headstock (9) and is located the inside of rectangle case (11), two fixed mounting has crossbearer (12) that is located the headstock (9) back between right angle frame (5), the equal fixed mounting in both sides of headstock (9) has short piece (13) that is located crossbearer (12) below, the one end fixed mounting of short piece (13) has right angle pole (14), the back movable mounting on right angle pole (14) top has gyro wheel (15) that are located crossbearer (12) inside, the surface of gyro wheel (15) and the inner wall swing joint of crossbearer (12), the quantity of right angle pole (14) is two, two fixed mounting has static shoulder body (16) that are located rectangle case (11) below between the bottom of right angle pole (14), the top fixed mounting of static shoulder body (16) has install (17) that are located rectangle case (11) below, the equal fixed mounting in both sides at install bin (17) inner chamber top has riser (18), telescopic link (19) have been cup jointed in the inside activity of riser (18), one end of telescopic link (19) is run through riser (18) and is extended to one side that riser (18) carried on the back mutually, the other end of telescopic link (19) is run through riser (18) and is extended to one side that riser (18) is corresponding and fixed mounting has contact piece (20), the surface activity of telescopic link (19) is cup jointed and is located flexible spring (21) between contact piece (20) and riser (18) the outside, the one end and the contact piece (20) fixed connection of flexible spring (21), the other end and the outside fixed connection of riser (18) of flexible spring (21).

2. The friction stir welding apparatus for a stationary shoulder of claim 1 wherein: round mouth (33) have been seted up at the top of rectangle case (11), the fixed surface of axis of rotation (10) installs side piece (23) that are located rectangle case (11) inside, the rear portion fixed mounting of rectangle case (11) inner chamber has installation piece (24) that are located axis of rotation (10) both sides and side piece (23) rear side.

3. The friction stir welding apparatus for a stationary shoulder of claim 2 wherein: the inside activity of side piece (23) has cup jointed pull rod (25), the one end of pull rod (25) runs through side piece (23) and rectangle case (11) in proper order and extends to the outside and the fixed mounting of rectangle case (11) and has pull button (26), the other end of pull rod (25) passes side piece (23) and installation piece (24) in proper order and extends to the inside of installation piece (24).

4. A friction stir welding apparatus for a stationary shoulder as set forth in claim 3 wherein: the outer fixed surface of pull rod (25) cup joints check piece (27) that are located side piece (23) front side, the outer surface activity of pull rod (25) cup joints rigid spring (28) that are located between rectangle case (11) inner chamber front side portion and check piece (27) front side portion, the one end of rigid spring (28) and the front side portion fixed connection of rectangle case (11) inner chamber, the other end of rigid spring (28) and the front side portion fixed connection of check piece (27).

5. The friction stir welding apparatus for a stationary shoulder of claim 4 wherein: the front side part of the inner cavity of the rectangular box (11) is fixedly provided with square blocks (29) positioned between the pull rods (25), and the stirring needle body (32) positioned below the rotating shaft (10) is movably sleeved in the rectangular box (11).

6. The friction stir welding apparatus for a stationary shoulder of claim 5, wherein: the bottom of stirring pin body (32) runs through rectangle case (11), install bin (17) and static shaft shoulder body (16) in proper order and extends to the below of static shaft shoulder body (16), the surface of stirring pin body (32) and the corresponding one side swing joint of contact piece (20), the back screw thread cover of rectangle case (11) has threaded rod (30).

7. The friction stir welding apparatus for a stationary shoulder of claim 6 wherein: one end of the threaded rod (30) penetrates through the rectangular box (11) and extends to the outside of the rectangular box (11), and a round button (31) is fixedly mounted on the outer end of the threaded rod (30), and the other end of the threaded rod (30) penetrates through the stirring pin body (32) and the square block (29) and extends to the inside of the square block (29).

8. The friction stir welding apparatus for a stationary shoulder of claim 1 wherein: square mouth (34) have all been seted up to the both sides of static shaft shoulder body (16), connecting rod (35) have been cup jointed in the inside activity of static shaft shoulder body (16), square mouth (34) are passed and outside and fixed mounting that extend to static shaft shoulder body (16) pull piece (37) to the one end of connecting rod (35).

9. The friction stir welding apparatus for a stationary shoulder of claim 8, wherein: the other end of the connecting rod (35) penetrates through the square opening (34) and extends to the inside of the static shaft shoulder body (16), the two collecting boxes (36) are fixedly mounted on the static shaft shoulder body, and one sides, corresponding to the two collecting boxes (36), of the two collecting boxes are movably connected with the outer surface of the stirring pin body (32).