Welding tool for reducing FSW deformation

Abstract

The utility model relates to the field of welding, in particular to a welding tool capable of reducing FSW deformation, a workpiece to be welded is clamped and fixed on a base by a clamping piece, a cooling supporting block and a heating supporting block which are used for supporting the workpiece to be welded are arranged on the base, the cooling supporting block is arranged along the length direction of a welding seam of the workpiece to be welded so as to cool the welding seam, and the heating supporting block is arranged along the length direction of the welding seam. The heating supporting blocks are located on the two sides of the cooling supporting blocks so as to support and heat the corresponding workpieces to be welded. According to the utility model, the heat output during welding is not increased while the welding deformation quantity is reduced, so that the mechanical property of a welding seam is kept in an optimal state.

Description

Technical Field

[0001] The utility model relates to the field of welding, in particular to a welding tool for reducing FSW deformation. Background Art

[0002] FSW technology, also known as friction stir welding, is a solid-phase connection technology that uses the heat generated by the friction between the high-speed rotating welding tool and the workpiece to partially melt the material to be welded. When the welding tool moves forward along the welding interface, the plasticized material flows from the front to the back of the welding tool under the action of the rotating friction force of the welding tool, and forms a dense solid-phase weld under the extrusion of the welding tool.

[0003] With the advancement of manufacturing technology, higher requirements are placed on the welding deformation of the FSW process. In order to reduce the welding deformation, as described in patent number "CN215468786U", the temperature of different points on both sides of the weld in the existing welding process is first measured, and a temperature field is preset at the bottom of the weld by heating, thereby reducing the temperature gradient during the welding process, thereby solving the defect of large deformation of thin plates after welding. However, while this method reduces the welding deformation, it generally increases the heat input during welding, which will reduce the mechanical properties of the weld, and therefore needs to be solved urgently. Utility Model Content

[0004] In order to avoid and overcome the technical problems existing in the prior art, the utility model provides a welding tool for reducing FSW deformation. The utility model reduces the welding deformation while not increasing the heat output during welding, so that the mechanical properties of the weld are kept in the best state.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A welding tool for reducing FSW deformation, wherein a workpiece to be welded is clamped and fixed on a base by a clamping member, and a cooling support block and a heating support block for supporting the workpiece to be welded are arranged on the base, the cooling support block is arranged along the length direction of the weld of the workpiece to be welded to cool the weld, and the heating support blocks are located on both sides of the cooling support block to support and heat the corresponding workpiece to be welded.

[0007] As a further solution of the utility model: a heat dissipation channel is opened in the cooling support block along the length direction of the weld, the heat dissipation channel is connected to a water cooling source or an air cooling source, and heat dissipation fins are arranged in the heat dissipation channel along the fluid flow direction, and the root of the heat dissipation fin is located on the side where the weld is located.

[0008] As a further solution of the utility model: the cooling support block is made of brass, and a surfacing steel support bar is arranged at the contact surface between the cooling support block and the weld, and the heating support blocks are symmetrically arranged on both sides of the cooling support block.

[0009] As a further solution of the utility model: the clamping member includes an X-direction positioning block and a Y-direction positioning block fixed on the base, and the base is also arranged with an X-direction clamping block and a Y-direction clamping block that slide with the base. After the X-direction clamping block slides in the direction of the X-direction positioning block, the workpiece to be welded is clamped and fixed along the X-axis direction, and after the Y-direction clamping block slides in the direction of the Y-direction positioning block, the workpiece to be welded is clamped and fixed along the Y-axis direction.

[0010] As a further solution of the utility model: the surfaces of the X-direction positioning block, the X-direction clamping block, the Y-direction positioning block and the Y-direction clamping block are all provided with positioning grooves so as to abut against the side edges of the workpieces to be welded.

[0011] As a further solution of the utility model: the clamping member also includes a clamping plate arranged above the workpiece to be welded for pressing the workpiece to be welded, the bottom surface of the clamping plate is consistent with the shape of the surface of the workpiece to be welded, and clamping blocks are evenly arranged on the surface of the clamping plate. The clamping blocks are driven by a power source to press the clamping plate from top to bottom.

[0012] As a further solution of the utility model: the clamping plate is provided with a welding groove for exposing the weld along the length direction of the weld of the workpiece to be welded.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model supports the workpiece to be welded by a support block with heating and cooling functions, and fixes the workpiece to be welded by a clamping member. The weld area is quickly cooled by the cooling support block, which greatly shortens the welding peak temperature time. The temperature of the base material area is regulated as a whole by the heating support block, so that the welding temperature field is smoother, the welding deformation is reduced without increasing the heat output during welding, and the mechanical properties of the weld are maintained in the best state.

[0015] 2. The utility model introduces a heat dissipation channel in the cooling support block, and quickly takes away the heat at the weld through the cooperation of the heat dissipation fins and cooling water, thereby improving the thermal conductivity efficiency; the cooling support block is designed to be made of brass, and a welded steel support bar is arranged on the contact surface between the cooling support block and the weld, which greatly improves the heat dissipation effect through the brass material while rigidly supporting the welding tool through the steel support bar.

[0016] 3. The utility model clamps and fixes the workpiece to be welded in the horizontal direction through the cooperation of the clamping blocks and the positioning blocks, and fits the workpiece to be welded in the vertical direction through the contoured clamping plate, and clamps and fixes the workpiece to be welded through the clamping block, and transmits pressure through the sufficient foundation of the clamping plate to avoid deformation of the workpiece to be welded. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] Figure 2 It is a cross-sectional view of the utility model.

[0019] In the figure:

[0020] 1. Base; 11. X-axis positioning block; 12. X-axis clamping block; 13. Y-axis positioning block;

[0021] 14. Y-axis clamping block; 15. Pressing block; 16. Pressing plate; 161. Welding groove;

[0022] 2. Workpiece to be welded; 3. Cooling support block;

[0023] 31. Heat dissipation fins; 32. Heat dissipation channel; 33. Surfacing steel support bar; 4. Heating support block. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figures 1-2 In an embodiment of the utility model, a welding tool for reducing FSW deformation is provided, wherein an X-axis positioning block 11 and an X-axis clamping block 12 are arranged in parallel along the X-axis direction on the base 1, and a Y-axis positioning block 13 and a Y-axis clamping block 14 are arranged in parallel along the Y-axis direction on the base 1. The two positioning blocks are fixed, and the clamping block can slide with the base 1 through a slide rail, or be driven by other linear drive components, so that the positioning block and the corresponding clamping block move toward each other, thereby clamping the workpiece 2 to be welded along the X-axis direction and the Y-axis direction.

[0026] A positioning groove can be provided on the surface of each positioning block and each clamping block 14. The workpiece 2 to be welded is placed on the positioning groove from top to bottom so that the side of the workpiece 2 to be welded abuts against the groove wall of the positioning groove to improve the clamping stability.

[0027] To further improve the clamping effect, a clamping plate 16 is arranged above the workpiece 2 to be welded. The clamping plate 16 is a contoured plate that matches the surface shape of the workpiece 2 to be welded and is arranged closely to the workpiece 2 to be welded. A welding groove 161 that penetrates the surface of the clamping plate 16 is opened along the length direction of the weld of the workpiece 2 to be welded. The welding groove 161 is used to expose the weld for subsequent welding.

[0028] A plurality of groups of pressing blocks 15 are evenly arranged above the pressing plate 16. The pressing blocks 15 are driven by a power source to press and fix the pressing plate 16 from top to bottom. The power source may be a cylinder, oil cylinder or electric cylinder arranged in a vertical direction, or may be pressed and fixed by magnetic attraction.

[0029] A heating support block 4 and a cooling support block 3 are also arranged below the workpiece 2 to be welded. Heat pipes are arranged in the heating support block 3 in a direction parallel to the weld seam. The number of heating support blocks 3 corresponds to the number of workpieces 2 to be welded. The two heating support blocks 4 are preferably symmetrically arranged on both sides of the cooling support block 3. The heating temperature of each heating support block 3 is controlled by an independent temperature control module.

[0030] The cooling support block 3 is arranged below the weld of the workpiece 2 to be welded and abuts against the weld. A heat dissipation channel 32 is provided in the cooling support block 3 along the length direction of the weld. The heat dissipation channel 32 is preferably arranged in two groups and symmetrically arranged on both sides below the weld. One end of the heat dissipation channel 32 is connected to an air cooling source or a water cooling source, preferably connected to a water cooling pipe. Heat dissipation fins 31 are arranged in the heat dissipation channel 32 along the flow direction of the fluid, and the root of the heat dissipation fin 31 is arranged adjacent to the weld.

[0031] A surfacing steel support bar is arranged at the contact position between the cooling support block 3 and the workpiece 2 to be welded. The steel support bar is used to improve the support rigidity, and the main part of the cooling support block 3 is made of brass to improve the heat dissipation effect.

[0032] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.

[0033] The block diagrams of the devices, apparatuses, equipment, and systems involved in this application are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagram. As will be appreciated by those skilled in the art, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open words, referring to "including but not limited to", and can be used interchangeably with them. The words "or" and "and" used here refer to the words "and / or" and can be used interchangeably with them, unless the context clearly indicates otherwise. The words "such as" used here refer to the phrase "such as but not limited to", and can be used interchangeably with them.

Claims

1. A welding tool for reducing FSW deformation, characterized in that: A workpiece (2) to be welded is clamped and fixed on a base (1) by a clamping member. A cooling support block (3) and a heating support block (4) for supporting the workpiece (2) to be welded are arranged on the base (1). The cooling support block (3) is arranged along the length direction of the weld of the workpiece (2) to be welded to cool the weld. The heating support blocks (4) are located on both sides of the cooling support block (3) to support and heat the corresponding workpiece (2) to be welded.

2. A welding tool for reducing FSW deformation according to claim 1, characterized in that: A heat dissipation channel (32) is provided in the cooling support block (3) along the length direction of the weld, the heat dissipation channel (32) is connected to a water cooling source or an air cooling source, heat dissipation fins (31) are arranged in the heat dissipation channel (32) along the flow direction of the fluid, and the roots of the heat dissipation fins (31) are located on the side where the weld is located.

3. A welding tool for reducing FSW deformation according to claim 1, characterized in that: The cooling support block (3) is made of brass, and a cladding steel support bar (33) is arranged at the contact surface between the cooling support block (3) and the weld, and the heating support blocks (4) are symmetrically arranged on both sides of the cooling support block (3).

4. A welding tool for reducing FSW deformation according to any one of claims 1 to 3, characterized in that: The clamping member comprises an X-direction positioning block (11) and a Y-direction positioning block (13) fixed on the base (1); the base (1) is also provided with an X-direction clamping block (12) and a Y-direction clamping block (14) which are slidably matched with the base (1); the X-direction clamping block (12) slides in the direction of the X-direction positioning block (11) to clamp and fix the workpiece (2) to be welded along the X-axis direction; and the Y-direction clamping block (14) slides in the direction of the Y-direction positioning block (13) to clamp and fix the workpiece (2) to be welded along the Y-axis direction.

5. A welding tool for reducing FSW deformation according to claim 4, characterized in that: The surfaces of the X-direction positioning block (11), the X-direction clamping block (12), the Y-direction positioning block (13) and the Y-direction clamping block (14) are all provided with positioning grooves so as to abut against the side of the workpiece (2) to be welded.

6. A welding tool for reducing FSW deformation according to claim 4, characterized in that: The clamping member also includes a pressing plate (16) arranged above the workpiece (2) to be welded and used for pressing the workpiece (2) to be welded. The bottom surface of the pressing plate (16) matches the shape of the surface of the workpiece (2) to be welded. Pressing blocks (15) are evenly arranged on the surface of the pressing plate (16). The pressing blocks (15) are driven by a power source to press the pressing plate (16) from top to bottom.

7. A welding tool for reducing FSW deformation according to claim 6, characterized in that: The clamping plate (16) is provided with a welding groove (161) for exposing the weld seam along the length direction of the weld seam of the workpiece (2) to be welded.

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