Tool for friction stir welding

Abstract

The utility model discloses a tool for friction stir welding, which comprises a working table, lateral positioning blocks and a pressing module, the lateral positioning blocks and the pressing module are fixed on the working table, and the lateral positioning blocks are positioned on two sides of the pressing module and are used for limiting and fixing a workpiece; an adjustable pressing block is connected to the pressing module and used for pressing a workpiece. According to the scheme, the pressing module is fixed to the workbench, the adjustable pressing block is used for pressing and fixing the workpiece, the multiple lateral positioning blocks are arranged on the two sides of the pressing module, when the workpiece is placed on the pressing module, the lateral positioning blocks can be used for positioning and adjusting the workpiece, clamping and positioning of the workpiece are achieved, and the working efficiency is improved. The workpiece fixing structure is stable during welding, and the welding quality is improved. The position of the adjustable pressing block can be adaptively adjusted according to workpieces of different sizes, and the multiple purposes of the clamp are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of welding tooling, in particular to a tooling for stir friction welding. Background Art

[0002] Friction stir welding is a process in which a high-speed rotating stirring head with a shoulder and a stirring needle is inserted into the middle position of two workpieces to be welded. The friction between the shoulder and the stirring needle and the solid material to be welded generates a large amount of friction heat and plastic deformation heat. At the same time, the shoulder applies a large forging pressure to the material to be welded, causing the material in the stirring zone to enter a thermoplastic state. When the shoulder contacts the material surface, the stirring head moves forward along the weld at a certain feed speed, transferring the plasticized and broken material from the advancing side to the retreating side, thereby forming a solid weld.

[0003] However, friction stir welding has high requirements for the rigid fixation of the lateral and bottom of the welded plate. When the stirring head is inserted into the middle position of the two workpieces to be welded, if the clamping and positioning of the plate is not fixed, it is very easy to cause problems such as unstable welding structure and unstable welding quality. In addition, the clamps on the existing workbench can only weld plates of specific sizes, and it is difficult to quickly clamp and fix plates of different sizes to be welded. Therefore, it is necessary to design a welding fixture that can quickly position and clamp plates of different sizes. Utility Model Content

[0004] In order to solve the technical problem of inconvenient clamping of the welded plates in stir friction welding in the background technology, the purpose of the utility model is to provide a tool for stir friction welding, which can solve the above problem.

[0005] The technical solution for achieving the purpose of the utility model is: a tool for stir friction welding, including a workbench, a lateral positioning block and a clamping module, the lateral positioning block and the clamping module are fixed on the workbench, the lateral positioning blocks are located on both sides of the clamping module, and are used to limit and fix the workpiece; the clamping module is connected to an adjustable clamping block for clamping the workpiece.

[0006] In this solution, a clamping module is fixed on the workbench, and the workpiece is clamped and fixed by the adjustable clamping block. There are multiple lateral positioning blocks, which are arranged on both sides of the clamping module. When the workpiece is placed on the clamping module, the lateral positioning blocks can be used to position and adjust the workpiece, solve the clamping and positioning of the workpiece, ensure the stability of the workpiece fixing structure during welding, and improve the welding quality. The adjustable clamping block can be adaptively adjusted according to workpieces of different sizes, improving the multiple uses of the clamp.

[0007] Furthermore, the clamping module is provided with a guide rail, and the adjustable clamping block slides along the guide rail, and can slide to a suitable position according to workpieces of different sizes and then be fixed, thereby clamping the workpiece.

[0008] Furthermore, the guide rail is a T-slot, a corresponding clamping bolt is installed in the T-slot, and the adjustable clamping block slides and is fixed on the T-slot through the clamping bolt, so that the position of the adjustable clamping block can be slid, the structure is simple, and the sliding is convenient.

[0009] Furthermore, the adjustable clamping block is provided with a mounting groove and a clamping head, one end of the clamping bolt is clamped in the T-slot, and the other end of the clamping bolt passes through the mounting groove and is locked by a clamping nut; the clamping head is located at the end of the adjustable clamping block, and extends toward the clamping module and exceeds the adjustable clamping block body. When it is necessary to adjust the position of the adjustable clamping block on the clamping module, the clamping nut is loosened, and the clamping bolt is slid at this time. When it slides to a suitable position, the clamping nut is tightened, and the adjustable clamping block is fixed; because the clamping head is beyond the adjustable clamping block body, the clamping head first contacts the workpiece during the tightening process, and also completes the clamping of the workpiece, that is, the clamping of the workpiece is completed first, and then the tightening of the adjustable clamping block is completed.

[0010] Furthermore, the direction of the mounting groove is perpendicular to the direction of the T-slot, that is, the adjustable clamping block can slide along the Y direction on the guide rail formed by the T-slot, and the adjustable clamping block can adjust itself along the X direction by utilizing the cooperation of its mounting groove and the clamping bolt, so that the clamping position of the workpiece can be adjusted by the end of the adjustable clamping block.

[0011] Furthermore, the clamping module is composed of a plurality of clamping units, and the guide rails are provided at both ends of the clamping unit, that is, a plurality of adjustable clamping blocks are provided at both ends of the clamping module, which can perform all-round clamping on the two workpieces during stir friction welding to prevent problems such as inadequate clamping and unbalanced clamping force.

[0012] Furthermore, limiting bosses are provided at both ends of the clamping unit, and workpiece placement grooves are formed between the plurality of limiting bosses. The limiting bosses can realize positioning of the workpiece in the X direction on the clamping module, and then the lateral positioning blocks on both sides of the clamping module are used to realize positioning of the workpiece in the Y direction. After positioning is completed, the adjustable clamping blocks are clamped again to realize stable clamping and accurate positioning of the workpiece during stir friction welding.

[0013] Furthermore, the lateral positioning block includes a locking bolt and a locking hole, wherein the locking bolt is rotatably disposed in the locking hole and faces the clamping module. When the workpiece needs to be adjusted in the Y direction, the bolt is rotated in the direction of the workpiece placement slot on the clamping module, and the bolt contacts the workpiece and drives the workpiece to slide, thereby realizing the position adjustment of the workpiece in the Y direction.

[0014] Furthermore, at least two lateral positioning blocks are provided on each side of the clamping module and are evenly arranged to correspond to two workpieces during friction stir welding, so as to evenly adjust the positions of the workpieces.

[0015] Furthermore, the clamping module and the lateral positioning block are both fixed to the workbench by fixing bolts, so as to facilitate disassembly and installation and fixing.

[0016] By adopting the above technical solution, the utility model has the following beneficial effects:

[0017] (1) After placing the workpiece on the clamping module, the adjustable clamping block is responsible for clamping the workpiece, and the lateral positioning blocks on both sides of the clamping module can adjust, limit and fix the specific position of the workpiece;

[0018] (2) The T-slots on the multiple clamping units are combined into a guide rail, and the adjustable clamping block can be adjusted in the Y direction along the guide rail. The bolts are installed in the installation grooves, and the adjustable clamping block can realize its own X direction position adjustment, that is, the clamping position can be accurately adjusted according to workpieces of different sizes;

[0019] (3) The clamping head of the adjustable clamping block extends toward the workpiece placement groove on the clamping module. When the adjustable clamping block is fixed, the clamping head first touches the workpiece to clamp it, and then finally fixes the adjustable clamping block on the clamping module;

[0020] (4) The lateral positioning block is provided with a locking bolt that can be rotated, and when rotated, it can contact the workpiece to adjust the position of the workpiece in the Y direction, and also plays a role in limiting and fixing. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to make the content of the utility model easier to understand, the utility model is further described in detail according to specific embodiments and in conjunction with the accompanying drawings.

[0022] Figure 1 This is a schematic diagram of the overall structure of the clamp in the utility model;

[0023] Figure 2 It is a schematic diagram of the structure of the compression unit in the utility model.

[0024] The numbers in the accompanying drawings are: 1 workbench; 2 lateral positioning block; 3 clamping module; 4 adjustable clamping block; 5 guide rail; 6 T-slot; 7 clamping bolt; 8 mounting slot; 9 clamping head; 10 clamping nut; 11 clamping unit; 12 limiting boss; 13 workpiece placement slot; 14 locking bolt; 15 locking hole; 16 fixing bolt. DETAILED DESCRIPTION

[0025] Example:

[0026] like Figure 1As shown, this embodiment provides a tooling for stir friction welding, including a workbench 1, a lateral positioning block 2 and a clamping module 3. The lateral positioning block 2 and the clamping module 3 are fixed on the workbench 1. The lateral positioning block 2 is located on both sides of the clamping module 3, and is used to limit and fix the workpiece; the clamping module 3 is connected with an adjustable clamping block 4 for clamping the workpiece. In this solution, a clamping module 3 is fixed on the workbench 1, and the adjustable clamping block 4 is used to clamp and fix the workpiece. There are multiple lateral positioning blocks 2, which are arranged on both sides of the clamping module 3. When the workpiece is placed on the clamping module 3, the lateral positioning block 2 can be used to position and adjust the workpiece, solve the clamping and positioning of the workpiece, ensure the stability of the workpiece fixing structure during welding, and improve the welding quality. The adjustable clamping block 4 can be adaptively adjusted according to workpieces of different sizes to improve the multiple uses of the clamp.

[0027] Preferably, the clamping module 3 is provided with a guide rail 5, and the adjustable clamping block 4 slides along the guide rail 5, and can slide to a suitable position according to workpieces of different sizes and then be fixed, thereby clamping the workpiece.

[0028] Preferably, the guide rail 5 is a T-slot 6, and a corresponding clamping bolt 7 is installed in the T-slot 6. The adjustable clamping block 4 slides and is fixed on the T-slot 6 through the clamping bolt 7, so that the position of the adjustable clamping block 4 can be slid, the structure is simple, and the sliding is convenient.

[0029] Preferably, the adjustable clamping block 4 is provided with a mounting groove 8 and a clamping head 9, one end of the clamping bolt 7 is clamped in the T-slot 6, and the other end of the clamping bolt 7 passes through the mounting groove 8 and is locked by a clamping nut 10; the clamping head 9 is located at the end of the adjustable clamping block 4 and extends toward the clamping module 3. When it is necessary to adjust the position of the adjustable clamping block 4 on the clamping module 3, the clamping nut is loosened, and the clamping bolt 7 is slid at this time. When it slides to a suitable position, the clamping nut 10 is tightened, and the adjustable clamping block 4 is fixed; because the clamping head 9 is beyond the body of the adjustable clamping block 4, the clamping head 9 first contacts the workpiece during the tightening process, and also completes the clamping of the workpiece, that is, the clamping of the workpiece is completed first, and then the tightening of the adjustable clamping block 4 is completed.

[0030] Preferably, the direction of the mounting groove 8 is perpendicular to the direction of the T-slot 6, that is, the adjustable clamping block 4 can slide along the Y direction on the guide rail 5 formed by the T-slot 6, and the adjustable clamping block 4 utilizes the cooperation of its mounting groove 8 and the clamping bolt 7 to achieve self-adjustment along the X direction, so that the end of the adjustable clamping block 4 can adjust the clamping position of the workpiece.

[0031] Preferably, the lateral positioning block 2 includes a locking bolt 14 and a locking hole 15, wherein the locking bolt 14 is rotatably disposed in the locking hole 15 and faces the clamping module 3. When the workpiece needs to be adjusted in the Y direction, the bolt is rotated in the direction of the workpiece placement slot 13 on the clamping module 3, and the bolt contacts the workpiece to drive the workpiece to slide, thereby realizing the position adjustment of the workpiece in the Y direction.

[0032] Preferably, at least two lateral positioning blocks 2 are provided on each side of the clamping module 3 and are evenly arranged to correspond to two workpieces during friction stir welding, so as to evenly adjust the positions of the workpieces.

[0033] Preferably, the clamping module 3 and the lateral positioning block 2 are both fixed to the workbench 1 by fixing bolts 16, so as to facilitate disassembly and installation and fixing.

[0034] like Figure 2 As shown, the clamping module 3 is composed of a plurality of clamping units 11, and the guide rails 5 are provided at both ends of the clamping unit 11, that is, a plurality of adjustable clamping blocks 4 are provided at both ends of the clamping module 3, which can perform all-round clamping of the two workpieces during friction stir welding to prevent problems such as inadequate clamping and unbalanced clamping force. Limiting bosses 12 are provided at both ends of the clamping unit 11, and workpiece placement grooves 13 are formed between the plurality of limiting bosses 12. The limiting bosses 12 can position the workpiece in the X direction on the clamping module 3, and then the lateral positioning blocks 2 on both sides of the clamping module 3 can be used to position the workpiece in the Y direction. After positioning is completed, the adjustable clamping blocks 4 are clamped again to achieve stable clamping and accurate positioning of the workpiece during friction stir welding.

[0035] Working principle: Place two workpieces to be welded into the workpiece placement groove 13, use the limiting boss 12 to position them in the X direction, then adjust the position of the locking bolt 14 on the lateral positioning block 2, position and limit the workpiece in the Y direction, and then slide the clamping bolt 7 in the guide rail 5 until the adjustable clamping block 4 is adjusted to a suitable position, tighten the clamping nut 10, and the clamping head 9 is pressed on the workpiece, and continue to tighten and fix the adjustable clamping block 4. After the workpiece positioning and fixation are completed, welding can be carried out.

[0036] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A tool for friction stir welding, characterized in that: The invention comprises a workbench (1), a lateral positioning block (2) and a clamping module (3); the lateral positioning block (2) and the clamping module (3) are fixed on the workbench (1); the lateral positioning block (2) is located on both sides of the clamping module (3) and is used for limiting and fixing a workpiece; the clamping module (3) is connected to an adjustable clamping block (4) for clamping the workpiece.

2. A friction stir welding tool according to claim 1, characterized in that: The pressing module (3) is provided with a guide rail (5), and the adjustable pressing block (4) slides along the guide rail (5).

3. A tool for friction stir welding according to claim 2, characterized in that: The guide rail (5) is a T-shaped slot (6), a corresponding clamping bolt (7) is installed in the T-shaped slot (6), and the adjustable clamping block (4) slides and is fixed on the T-shaped slot (6) through the clamping bolt (7).

4. A tool for friction stir welding according to claim 3, characterized in that: The adjustable clamping block (4) is provided with a mounting groove (8) and a clamping head (9); one end of the clamping bolt (7) is clamped in the T-shaped groove (6), and the other end of the clamping bolt (7) passes through the mounting groove (8) and is locked by a clamping nut (10); the clamping head (9) is located at the end of the adjustable clamping block (4) and extends toward the clamping module (3).

5. A friction stir welding tool according to claim 4, characterized in that: The direction of the installation groove (8) is perpendicular to the direction of the T-shaped groove (6).

6. A tool for friction stir welding according to claim 2, characterized in that: The clamping module (3) is composed of a plurality of clamping units (11), and the guide rails (5) are provided at both ends of the clamping units (11).

7. A friction stir welding tool according to claim 6, characterized in that: Limiting bosses (12) are provided at both ends of the clamping unit (11), and workpiece placement grooves (13) are formed between a plurality of the limiting bosses (12).

8. A friction stir welding tool according to claim 1, characterized in that: The lateral positioning block (2) comprises a locking bolt (14) and a locking hole (15), wherein the locking bolt (14) is rotatably disposed in the locking hole (15) and faces the pressing module (3).

9. A tool for friction stir welding according to claim 8, characterized in that: Each side of the pressing module (3) is provided with at least two lateral positioning blocks (2), which are evenly arranged.

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