Open type self-supporting deburring friction stir welding tool

Abstract

The invention discloses an open type self-supporting deburring friction stir welding tool, and relates to the technical field of friction stir welding, the open type self-supporting deburring friction stir welding tool comprises a cutter handle arranged on an inner shaft body, a movable shaft shoulder main body arranged at the bottom end of the cutter handle and a deburring cutter arranged on an outer shaft sleeve, and a gap exists between a cutting edge of the deburring cutter and a shaft shoulder surface; the deburring cutter is arranged at the rear end of the movable shaft shoulder body in the welding direction, and the plane where the cutting edge of the deburring cutter is located and the plane where the shaft shoulder face is located are arranged in a coplanar mode. Compared with a pure movable shaft shoulder and static shaft shoulder structure in the prior art, the movable shaft shoulder is improved on the basis of the movable shaft shoulder, the use advantages of the movable shaft shoulder can be inherited, and the use advantages of the static shaft shoulder can be additionally obtained.

Description

Technical Field

[0001] This invention relates to the field of friction stir welding technology, and more specifically to an open-type self-supporting deburring friction stir welding fixture. Background Technology

[0002] As the core component of friction stir welding, the stirring head has seen the rapid development of modern industry, leading to the design and application of unique stirring heads to meet various scenarios and performance requirements. These are mainly composed of moving shoulder stirring heads and stationary shoulder stirring heads, referred to simply as moving shoulder and stationary shoulder, respectively. The existence of these two types can basically satisfy the welding requirements of the vast majority of product weld bead structures.

[0003] The moving shoulder, as a traditional welding tool, is typically installed as follows: a tool holder is mounted on the inner shaft of the spindle (which has an inner shaft body and an outer bushing arranged coaxially, and the two can move up and down synchronously, and the inner shaft body can rotate). The moving shoulder is mounted at the bottom of the tool holder. When the inner shaft body rotates, it will synchronously drive the tool holder and the moving shoulder to rotate together. The rotation of the moving shoulder achieves the corresponding friction stir welding required. Figure 1 The diagram shows a schematic of a moving shoulder mounted on a tool holder, where a represents the tool holder, b represents the moving shoulder, and c represents the shoulder surface of the moving shoulder.

[0004] Moving shoulders offer advantages in friction stir welding, including wide applicability, low manufacturing cost, and adaptability to weld joints with small dimensions. However, during welding, the area where the shoulder surface contacts the workpiece is prone to generating numerous burrs and flash, requiring subsequent cleaning. While using stationary shoulders can avoid this issue, their manufacturing cost is significantly higher. Furthermore, due to their assembly structure, stationary shoulders can experience occasional stalling, loud noise, and aluminum shims, reducing their welding life by approximately 50% compared to moving shoulders. Additionally, their larger size increases the likelihood of movement interference with the product and fixture structure during welding, necessitating specific design requirements for both.

[0005] To address this, we propose an open-type self-supporting deburring friction stir welding fixture, which, in addition to possessing the working characteristics of the moving shoulder, also has the ability of the stationary shoulder to eliminate burrs and flash. Summary of the Invention

[0006] The purpose of this invention is to solve the problems in the prior art by proposing an open self-supporting deburring friction stir welding tool. This tool integrates welding and deburring operations simultaneously. Compared with the simple moving and stationary shoulder structure in the prior art, this application improves on the basis of the moving shoulder, so that it can inherit the advantages of the moving shoulder and also obtain the additional advantages of the stationary shoulder.

[0007] To address the above problems, the present invention provides the following technical solution:

[0008] An open-type self-supporting deburring friction stir welding fixture includes a tool holder on an inner shaft, a moving shoulder body at the bottom of the tool holder, and a deburring tool on an outer bushing. There is a gap between the cutting edge of the deburring tool and the shoulder surface. The deburring tool is located at the rear end of the moving shoulder body along the welding direction, and the plane of the cutting edge of the deburring tool is coplanar with the plane of the shoulder surface.

[0009] As a further aspect of the present invention: the deburring tool has a chip removal groove recessed on at least one side.

[0010] As a further aspect of the present invention, it also includes a rolling element disposed on the deburring tool, the rolling element being located at the rear end of the cutting edge along the welding direction, and the contact point between the rolling element and the workpiece being located on the plane of the shoulder surface.

[0011] As a further aspect of the present invention: the rolling element includes a cylindrical portion having an assembly groove and a threaded section coaxially connected to the cylindrical portion. The threaded section is threadedly mounted on a deburring tool. A ball is movably embedded in the assembly groove, and the contact point between the ball and the workpiece is located on the plane of the shoulder surface.

[0012] As a further aspect of the present invention: the height of the deburring tool on the outer bushing is adjustable so that the plane where the cutting edge is located is coplanar with the plane where the shoulder surface is located.

[0013] As a further aspect of the present invention, it also includes a bracket disposed on the outer bushing for mounting the deburring tool. The bottom end of the bracket has an oblong hole with a vertical component in the length direction of the oblong hole. A fastening bolt is slidably mounted on the oblong hole along its length direction. The top end of the deburring tool has a threaded hole for inserting the fastening bolt. When the deburring tool is in contact with the bottom end of the bracket and the threaded hole is aligned with the oblong hole, the position of the fastening bolt on the oblong hole can be adjusted to adapt and connect it to the threaded hole.

[0014] As a further aspect of the present invention, a gasket is also included. The bottom end of the bracket and the top end of the deburring tool are provided with notches for overlapping each other, so that when a gap is created between the notches on the bottom end of the bracket and the top end of the deburring tool, the gasket can be placed in the gap.

[0015] As a further aspect of the present invention, it also includes a positioning pin, and the bottom end of the bracket and the notch of the deburring tool are both provided with insertion holes for the positioning pin to be inserted.

[0016] As a further aspect of the present invention, it also includes a retarder tool detachably mounted on the deburring tool, the cutting edge of the retarder tool facing the moving shaft shoulder body, and chip removal grooves recessed on both sides of the deburring tool, with the retarder tool located between the two chip removal grooves.

[0017] As a further aspect of the present invention: the deburring tool is provided with an assembly groove for mounting the regrinding tool at a position between the two chip grooves, and the deburring tool is provided with a locking bolt for locking the regrinding tool in the assembly groove.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. By integrating welding and deburring operations simultaneously, and adding a deburring tool to the outer bushing and connecting it to the moving shoulder body along the welding path, burrs can be removed directly at the moment the weld is formed, significantly improving processing efficiency. Simultaneously, the coplanar layout of the cutting edge plane and the shoulder surface ensures precise contact of the tool with the burr root, avoiding insufficient or excessive cutting that could damage the substrate. Compared to the simple moving and stationary shoulder structures in existing technologies, this application improves upon the moving shoulder, allowing it to inherit the advantages of the moving shoulder while also gaining the additional advantages of the stationary shoulder.

[0020] 2. The introduction of dual-sided chip removal grooves significantly optimizes chip removal performance and thermal management during the cutting process. The dual-channel design allows plastic flash chips to be quickly discharged along both sides of the tool, effectively preventing secondary scraping caused by chip accumulation.

[0021] 3. The integration of rolling elements creates a dynamic and stable support mechanism. On the one hand, it avoids situations such as excessive welding thinning, excessive sinking, and excessive cutting depth of the deburring tool, which can lead to overcutting. On the other hand, its layout behind the cutting edge applies rolling pressure to the workpiece immediately after cutting, suppressing burr regeneration caused by material springback.

[0022] 4. The rolling elements adopt a combination structure of threaded sections and balls, achieving height self-adaptive fine adjustment and low-damage contact. Threaded installation allows for precise adjustment of the ball protrusion, compensating for workpiece surface unevenness or assembly errors; the free rolling of the balls within the groove cavity dynamically adapts to the micro-undulations of the workpiece, avoiding rigid contact that scratches the surface, while also distributing local loads.

[0023] 5. The adjustable height of the deburring tool gives the equipment strong adaptability to various working conditions. By adjusting the tool installation height, it is always ensured that the cutting edge and the shoulder surface are strictly coplanar, effectively dealing with shoulder wear, changes in workpiece thickness, or differences in burr morphology under different welding parameters, and ensuring the stability of the process in long-term operation.

[0024] 6. The adjustment mechanism consisting of the oblong hole and the fastening bolt provides efficient and reliable height control. The vertical component of the oblong hole allows for stepless continuous lifting and lowering, while the bolt sliding locking mechanism simplifies the operation process. The through-bolt connection forms a bidirectional rigid constraint, preventing tool displacement caused by cutting vibration and ensuring a stable machining process.

[0025] 7. The combination design of notch interlocking and gaskets enables intelligent compensation for assembly tolerances. The notch overlap between the bracket and the tool enables rapid self-positioning, reducing adjustment time; the gasket filling gaps eliminates loosening of connections caused by machining errors, enhances system rigidity, and avoids structural deformation caused by bolt over-tightening.

[0026] 8. The addition of locating pins and sockets creates a double-safety mechanism to prevent misalignment. After the pins are inserted, they limit the horizontal displacement of the tool and prevent circumferential displacement caused by insufficient bolt preload; the standardized socket design ensures repeatable positioning accuracy after disassembly and reassembly, reducing calibration costs after maintenance.

[0027] 9. The modular integration of detachable and re-sharpening tools expands online maintenance capabilities. The cutting edge located between the chip removal grooves can directly trim aluminum chips adhering to the surface of the moving shaft shoulder, utilizing the existing chip removal channel to export grinding chips. This allows for simultaneous maintenance of the welding spindle and deburring, reducing downtime.

[0028] 10. The design of the mounting slot and locking bolt enables quick and secure replacement of shaving tools. The standardized slot allows for precise insertion and plug-and-play replacement of shaving tools; the lateral locking bolt resists cutting vibration, prevents tool loosening, and avoids the risk of failure due to stress damage to the threaded hole. Attached Figure Description

[0029] The present invention will be further described below with reference to the accompanying drawings.

[0030] Figure 1 This is a schematic diagram of the existing technology of mounting a moving shaft shoulder on a tool holder;

[0031] Figure 2 This is a three-dimensional structural diagram of the moving shaft shoulder body and deburring tool of the present invention;

[0032] Figure 3 This is a front view schematic diagram of the moving shaft shoulder body and deburring tool of the present invention;

[0033] Figure 4 This is a schematic diagram of the exploded structure of the deburring tool and support of the present invention. Figure 1 ;

[0034] Figure 5 This is a schematic diagram of the exploded structure of the deburring tool and support of the present invention. Figure 2 ;

[0035] Figure 6 This is a schematic diagram of the exploded structure of the deburring tool and support of the present invention. Figure 3 ;

[0036] Figure 7 This is a three-dimensional structural diagram of the rolling element of the present invention.

[0037] In the diagram: 1. Moving shoulder body; 2. Deburring tool; 3. Chip removal groove; 4. Rolling element; 5. Bracket; 6. Waist-shaped hole; 7. Fastening bolt; 8. Threaded hole; 9. Notch; 10. Washer; 11. Grinding tool; 12. Assembly groove; 13. Locking bolt; 14. Locating pin; 15. Insertion hole; a. Tool holder; b. Moving shoulder; c. Shoulder surface. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] like Figures 2-7 As shown, the open self-supporting deburring friction stir welding fixture includes a moving shoulder body 1 identical to existing designs. The moving shoulder body 1 is mounted on a tool holder a, which is mounted on the inner shaft of a spindle (not shown in the figure). A bracket 5 is fixedly mounted on the outer sleeve of the spindle. A deburring tool 2 is mounted at the bottom of the bracket 5. There is a gap between the cutting edge of the deburring tool 2 and the shoulder surface c. From the welding direction, the deburring tool 2 is located at the rear end of the moving shoulder body 1. Based on the friction stir welding process, the shoulder surface c of the rotating moving shoulder body 1 moves in contact with the workpiece surface. Therefore, the cutting edge of the deburring tool 2 is set at its bottom end, and the plane where the cutting edge is located is designed to be coplanar with the plane where the shoulder surface c is located, so as to scrape and clean the burrs and flash generated during the friction stir welding process, achieving a welding effect of cleaning as welding.

[0040] Based on the overall structural design of the moving shaft shoulder body 1, this application sets the overall structure of the bracket 5 to a shape that adapts to the moving shaft shoulder body 1, so as to... Figure 3 As shown, the bottom of the bracket 5 is tilted due to the mounting step formed between the tool holder a and the moving shoulder body 1, so as to be as close as possible to the moving shoulder body 1.

[0041] In order for the deburring tool 2 to quickly remove the cleaned burrs and flash, this application provides a chip removal groove 3 on the side of the deburring tool 2. Preferably, the chip removal groove 3 is set in two sets and evenly distributed on both sides.

[0042] In order to make the deburring tool 2 adaptable to different types of moving shoulder bodies 1, this application movably mounts the deburring tool 2 on the bracket 5, so that the height position of the deburring tool 2 on the bracket 5 is adjustable. Therefore, when dealing with moving shoulder bodies 1 with different height shoulder surfaces c, the height of the deburring tool 2 on the bracket 5 can be adjusted so that the plane where the cutting edge of the deburring tool 2 is located is coplanar with the plane where the shoulder surface c of the moving shoulder body 1 is located, so that the burr and flash cleaning work can be carried out in the subsequent friction stir welding.

[0043] like Figures 3-6 As shown, specifically, a waist-shaped hole 6 is provided at the bottom end of the bracket 5. The waist-shaped hole 6 is arranged in the vertical direction, and a fastening bolt 7 is slidably installed in the waist-shaped hole 6. A threaded hole 8 is provided at the top end of the deburring tool 2 for the fastening bolt 7 to be threaded into. When the top end of the deburring tool 2 is attached to the bottom end of the bracket 5, and the plane of the cutting edge of the deburring tool 2 is coplanar with the plane of the shoulder surface c, the threaded hole 8 and the waist-shaped hole 6 are in opposite positions. The fastening bolt 7 on the waist-shaped hole 6 can be slid to adjust its height position until one end can be threaded into the threaded hole 8. This achieves locking of the deburring tool 2 after its position adjustment on the bracket 5, so that the coplanar state of the plane of the cutting edge and the plane of the shoulder surface c is stably maintained. Furthermore, based on the aforementioned inclined design of the bottom end of the bracket 5 to accommodate the moving shaft shoulder body 1, the waist-shaped hole 6 tilts along with the inclination of the bottom end of the bracket 5. This inclination needs to ensure that the length of the waist-shaped hole 6 always has a component along the vertical direction, that is, to ensure that the position of the fastening bolt 7 can be adjusted in the vertical direction during the sliding process on the waist-shaped hole 6, so as to accommodate the threaded hole 8 at different height positions.

[0044] To ensure the deburring tool 2 is accurately positioned and fitted to the corresponding location at the bottom of the bracket 5, this application provides notches 9 at both the bottom of the bracket 5 and the top of the deburring tool 2 for overlapping. These notches 9 allow for rapid fitting and positioning. Normally, the bottom of the bracket 5 and the top of the deburring tool 2 are in an overlapping fit thanks to their respective notches 9, with no gap between them. However, if the deburring tool 2 is adjusted downwards on the bracket 5, a gap will form between the bottom of the bracket 5 and the notch 9. This gap may cause the fastening bolt 7 to shift in position within the oblong hole 6 during subsequent friction stir welding. Therefore, this application also provides several shims 10. When a gap is generated, the appropriate number of shims 10 can be selected according to the size of the gap and the shims 10 can be filled into the gap to eliminate the existence of the gap, thereby eliminating the possibility of the deburring tool 2 sliding on the bottom of the support 5, and ensuring a stable connection between the adjusted deburring tool 2 and the bottom of the support 5.

[0045] like Figure 4 As shown, furthermore, to more accurately position the deburring tool 2 against the corresponding position at the bottom of the bracket 5, this application also provides several positioning pins 14. Correspondingly, insertion holes 15 for inserting the positioning pins 14 are provided on both the bottom of the bracket 5 and the notch 9 of the deburring tool 2. Before assembling the deburring tool 2 with the bracket 5, one end of the positioning pin 14 can be pre-inserted into the insertion hole 15 on the bracket 5, and then the insertion hole 15 on the deburring tool 2 can be fitted onto the other end of the positioning pin 14, thus achieving pre-positioning. Alternatively, before assembling the deburring tool 2 with the bracket 5, one end of the positioning pin 14 can be pre-inserted into the insertion hole 15 on the deburring tool 2, and then the other end of the positioning pin 14 can be inserted into the insertion hole 15 on the bracket 5, thus achieving pre-positioning. The two installation methods can be selected according to the assembly habits of the workers.

[0046] like Figures 5-6 As shown, during prolonged friction stir welding of the moving shoulder body 1, a significant amount of material debris will accumulate on its exterior. This application provides a regrinding tool 11 on the deburring tool 2, with the cutting edge of the regrinding tool 11 facing the moving shoulder body 1. Preferably, the distance between the cutting edge and the moving shoulder body 1 is 0.5 mm. During subsequent friction stir welding, the presence of the regrinding tool 11 can scrape away the material debris adhering to the rotating moving shoulder body 1. Simultaneously, with the aforementioned provision of two sets of chip removal grooves 3, the regrinding tool 11 can be positioned between the two grooves. Therefore, the chip removal grooves 3 not only provide chip removal space for the deburring tool 2 but also for the regrinding tool 11.

[0047] like Figures 4-5 As shown, in order to facilitate the replacement of the regrinding tool 11 after long-term use and to adjust the distance between the cutting edge of the regrinding tool 11 and the moving shoulder body 1, this application provides an assembly groove 12 for mounting the regrinding tool 11 at a position between the two chip grooves 3 on the deburring tool 2, and a locking bolt 13 for locking the regrinding tool 11 in the assembly groove 12 is provided on the deburring tool 2. After the regrinding tool 11 is placed in the assembly groove 12, it can be locked using the locking bolt 13, or after the regrinding tool 11 is placed in the assembly groove 12, it can be rotated by a corresponding angle with the axis of the locking bolt 13 as the center, thereby adjusting the distance between its cutting edge and the moving shoulder body 1.

[0048] During normal friction stir welding, the spindle drives the deburring tool 2 and the moving shoulder body 1 to move up and down synchronously. The distance the spindle moves up and down is controlled by the welding equipment. However, during the downward movement of the spindle, the deburring tool 2 and the moving shoulder body 1 may be significantly affected by factors such as the type of product being welded and the welding process. This can result in a large amount of downward movement of the deburring tool 2 and the moving shoulder body 1. Consequently, not only will the shoulder surface c continue to act downwards on the workpiece surface, leading to excessive welding thinning and deep sinking, but the cutting edge of the deburring tool 2 may also sink excessively, resulting in over-cutting.

[0049] like Figures 6-7 As shown, based on the aforementioned potential drawbacks, this application, in addition to the joint design of the deburring tool 2 and the regrinding tool 11, also adds a rolling element 4 mounted on the spindle. When the spindle moves down a specified displacement, the rolling element 4 will come into contact with the workpiece surface. At this time, the shoulder surface c comes into contact with the workpiece surface, that is, the contact point between the rolling element 4 and the workpiece is located on the plane where the shoulder surface c is located. Under the contact action of the rolling element 4, the spindle can be prevented from continuing to move down, thus avoiding situations such as excessive welding thinning, excessive sinking and excessive cutting caused by excessive sinking of the deburring tool 2.

[0050] Preferably, with the support 5 and the deburring tool 2 present, the rolling element 4 is positioned on the deburring tool 2. Preferably, from the welding direction, the rolling element 4 is located at the rear end of the cutting edge of the deburring tool 2. This layout design allows the burrs and flash generated during welding to be directly cleaned by the cutting edge of the deburring tool 2 and discharged by the chip removal groove 3. The rear rolling element 4 can roll against the surface of the welded workpiece, using this welded workpiece surface as a reference. If the rolling element 4 is positioned between the deburring tool 2 and the shoulder surface c, it will abut against the burrs and flash on the surface of the welded workpiece, causing the burrs and flash to adhere firmly to the workpiece surface, making it difficult to be scraped off by the cutting edge of the rear deburring tool 2 or producing a harsh noise during the scraping process.

[0051] Specifically, the rolling element 4 is described in detail below: The rolling element 4 can be designed as a pressure roller structure in the prior art. This paper proposes a ball bearing structure, such as... Figure 7 As shown, the rolling element 4 includes a cylindrical part 401 of the assembly cavity and a threaded section 402 coaxially connected to the cylindrical part 401. The threaded section 402 is threadedly mounted on the deburring tool 2. A ball 403 is movably embedded in the assembly cavity, and the contact point between the ball 403 and the workpiece is located on the plane of the shoulder surface c.

[0052] It should be noted that the deburring tool 2 cutting edge, ball 403 contact point with the workpiece, and shoulder surface c mentioned above are in a coplanar arrangement. This coplanar arrangement is always maintained. Even in welding conditions, when the spindle is tilted as a whole, for example, when the tilt angle between the spindle and the vertical plane is 2 to 3 degrees, the above three still maintain a coplanar arrangement.

[0053] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. An open-type self-supporting deburring friction stir welding fixture, comprising a tool holder (a) disposed on an inner shaft body and a moving shaft shoulder body (1) disposed at the bottom end of the tool holder (a), characterized in that, It also includes a deburring tool (2) disposed on the outer bushing, and there is a gap between the cutting edge of the deburring tool (2) and the shoulder surface (c). The deburring tool (2) is disposed at the rear end of the moving shoulder body (1) along the welding direction, and the plane where the cutting edge of the deburring tool (2) is located is coplanar with the plane where the shoulder surface (c) is located.

2. The open-type self-supporting deburring friction stir welding fixture according to claim 1, characterized in that, The deburring tool (2) has a chip removal groove (3) recessed on at least one side.

3. The open-type self-supporting deburring friction stir welding fixture according to claim 1 or 2, characterized in that, It also includes a rolling element (4) on the deburring tool (2), the rolling element (4) is located at the rear end of the cutting edge along the welding direction, and the contact point between the rolling element (4) and the workpiece is located on the plane of the shoulder surface (c).

4. The open-type self-supporting deburring friction stir welding fixture according to claim 3, characterized in that, The rolling element (4) includes a cylindrical part (401) with an assembly groove and a threaded section (402) coaxially connected to the cylindrical part (401). The threaded section (402) is threadedly mounted on the deburring tool (2). A ball (403) is movably embedded in the assembly groove, and the contact point between the ball (403) and the workpiece is located on the plane of the shoulder surface (c).

5. The open-type self-supporting deburring friction stir welding fixture according to claim 1 or 2, characterized in that, The height of the deburring tool (2) on the outer bushing is adjustable so that the plane where the cutting edge is located is coplanar with the plane where the shoulder surface (c) is located.

6. The open-type self-supporting deburring friction stir welding fixture according to claim 5, characterized in that, It also includes a bracket (5) provided on the outer bushing for mounting the deburring tool (2). The bracket (5) has a waist-shaped hole (6) at its bottom end. The length of the waist-shaped hole (6) has a component along the vertical direction. A fastening bolt (7) is slidably installed on the waist-shaped hole (6) along its length direction. The top end of the deburring tool (2) has a threaded hole (8) for inserting the fastening bolt (7). When the deburring tool (2) is in contact with the bottom end of the bracket (5) and the threaded hole (8) is opposite to the waist-shaped hole (6), the position of the fastening bolt (7) on the waist-shaped hole (6) can be adjusted to adapt and connect it to the threaded hole (8).

7. The open-type self-supporting deburring friction stir welding fixture according to claim 6, characterized in that, It also includes a gasket (10), and the bottom end of the bracket (5) and the top end of the deburring tool (2) are provided with notches (9) for overlapping each other, so that when a gap is created between the bottom end of the bracket (5) and the notch (9) on the top end of the deburring tool (2), the gasket (10) can be placed in the gap.

8. The open-type self-supporting deburring friction stir welding fixture according to claim 7, characterized in that, It also includes a positioning pin (14), and the bottom end of the bracket (5) and the notch (9) of the deburring tool (2) are provided with insertion holes (15) for the positioning pin (14) to be inserted.

9. The open-type self-supporting deburring friction stir welding fixture according to claim 2, characterized in that, It also includes a retardant tool (11) detachably mounted on the deburring tool (2), with the cutting edge of the retardant tool (11) facing the moving shaft shoulder body (1). Both sides of the deburring tool (2) are recessed with chip removal grooves (3), and the retardant tool (11) is located between the two chip removal grooves (3).

10. The open-type self-supporting deburring friction stir welding fixture according to claim 9, characterized in that, The deburring tool (2) has an assembly slot (12) for mounting the shaving tool (11) at a position between the two chip grooves (3), and the deburring tool (2) is provided with a locking bolt (13) for locking the shaving tool (11) in the assembly slot (12).

Images