Quick positioning tool for friction stir welding

Abstract

The utility model provides a quick positioning tool for friction stir welding, which comprises a base, a foot stool fixedly connected to the bottom wall of the base and a dredging groove formed in the top wall of the base, and further comprises a cooling assembly fixedly connected to the top wall of the base and used for cooling a welded workpiece, the cooling assembly comprises a limiting sliding groove formed in the top wall of the base, a flow guide plate fixedly connected to the top wall of the base and a draught fan fixedly connected to the side wall of the base, and the limiting sliding groove, the flow guide plate and the draught fan are symmetrically distributed about the central axis of the base. The displacement assembly is fixedly connected to the inner wall of the base; the mounting assembly is fixedly connected to the top wall of the displacement assembly; the clamping assembly is slidably connected to the top wall of the mounting assembly; and the adjusting assembly is fixedly connected to the top wall of the mounting assembly. The distance between the bearing plates and the positions of the clamping sliding seats on the bearing plates can be adjusted at will, precise positioning and clamping of metal workpieces to be welded are rapidly completed, the clamping precision is improved, the clamping speed is increased, and the application range of the tool is widened.

Description

Technical Field

[0001] The utility model relates to the technical field of friction stir welding, in particular to a rapid positioning tool for friction stir welding. Background Art

[0002] Friction stir welding is a process in which a high-speed rotating stirring head is inserted into the workpiece to be welded. The rotating stirring needle rubs against the material to be welded and plasticizes it. The friction between the shaft shoulder and the workpiece surface generates heat and is used to prevent the plastic material from overflowing. During the welding process, the workpiece is rigidly fixed on the workbench, and the stirring head rotates at high speed while moving relative to the workpiece along the joint of the workpiece. The weld is formed under the forging pressure of the stirring head, and finally the metallurgical bonding of the workpieces is achieved.

[0003] A search revealed that in the prior art, a Chinese patent application with the patent number CN 219254472 U discloses a friction stir welding fixture, which includes a workbench providing a basic support for the workpiece to be welded, and a plurality of clamp assemblies distributed around the workbench, the plurality of clamp assemblies being used to clamp and fix the workpiece to be welded. The workbench is also provided with cooling air ducts with outlets facing the welding portion of the workpiece, the cooling air ducts being connected to a pipe, and a fan being connected through the pipe. However, the following defects still exist:

[0004] When the tooling in the above patent document is used to position and clamp metal workpieces, the spacing between the support members and the spacing between the clamping bodies cannot be adjusted, and metal workpieces with smaller sizes or larger aspect ratios cannot be stably clamped, which reduces the scope of application of the tooling.

[0005] Therefore, we made improvements to this problem and proposed a rapid positioning tool for stir friction welding. Utility Model Content

[0006] The purpose of the present utility model is to: when positioning and clamping metal workpieces with the tooling in the above-mentioned patent documents, the spacing between the support members and the spacing between the clamping bodies cannot be adjusted, and metal workpieces of certain sizes cannot be stably clamped, which reduces the scope of application of the tooling.

[0007] In order to achieve the above-mentioned purpose of the utility model, the utility model provides the following technical solutions:

[0008] A rapid positioning tool for friction stir welding, comprising a base, a footrest fixedly connected to the bottom wall of the base, and a dredging groove provided on the top wall of the base, and further comprising:

[0009] A cooling assembly fixedly connected to the top wall of the base for cooling the welded workpiece, wherein the cooling assembly includes a limiting chute provided on the top wall of the base, a guide plate fixedly connected to the top wall of the base, and a fan fixedly connected to the side wall of the base, wherein the limiting chute, the guide plate, and the fan are symmetrically distributed about the central axis of the base;

[0010] The displacement assembly is fixedly connected to the inner wall of the base and is used to adjust to workpieces of different sizes;

[0011] An installation component, fixedly connected to the top wall of the displacement component, used to install the components required for clamping;

[0012] A clamping assembly, slidably connected to the top wall of the mounting assembly, for clamping a metal workpiece to be welded;

[0013] The adjusting component is fixedly connected to the top wall of the mounting component and is used to adjust the clamping position of the workpiece.

[0014] As a preferred technical solution of the present utility model, the displacement assembly includes a displacement motor fixedly connected to the inner wall of the base, a gear group fixedly connected to the output end of the displacement motor, a bidirectional screw rotatably connected to the inner wall of the base, and a threaded sleeve threadedly connected to the outer wall of the bidirectional screw. The displacement motor drives the bidirectional screw to rotate through the gear group, and the threaded sleeve is symmetrically distributed about the central axis of the base, and the threaded sleeve extends upward through a limiting slide groove.

[0015] As a preferred technical solution of the present invention, the mounting assembly includes a load-bearing slide rail fixedly connected to the top wall of the base, a load-bearing plate fixedly connected to the top wall of the threaded sleeve, and a limit plate fixedly connected to the top wall of the load-bearing plate.

[0016] As a preferred technical solution of the present invention, the clamping assembly includes a clamping slide slidably connected to the top wall of the limit plate, a clamping block slidably connected to the inner wall of the clamping slide, a locking bolt threadedly connected to the inner wall of the clamping block, and a handle fixedly connected to the top wall of the locking bolt. The clamping slide is symmetrically distributed about the central axis of the limit plate, and the clamping block extends outward through the inner wall of the clamping slide.

[0017] As an optimal technical solution of the present invention, the adjustment assembly includes a rack fixedly connected to the top wall of the supporting plate, a servo motor fixedly connected to the side wall of the clamping slide, and a movable gear fixedly connected to the output end of the servo motor, and the movable gear is meshed with the rack.

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

[0019] In the solution of the present utility model:

[0020] The bidirectional screw is driven to rotate by the set displacement motor and gear set. At the same time, the bidirectional screw drives the threaded sleeve and the supporting plate to move along the extension direction of the supporting slide rail, so that the supporting plate can accurately adapt to the size of the workpiece to be welded. The servo motor drives the moving gear to rotate, and the moving gear engages with the rack to generate a reaction force on the clamping slide. The clamping slide moves along the surface of the limit plate and accurately positions itself to the clamping point of the workpiece, thereby realizing precise positioning of the clamping point on the surface of the metal workpiece. This solves the problem that when the tooling in the prior art positions and clamps the metal workpiece, the spacing between the support parts and the spacing between the clamping bodies cannot be adjusted, and metal workpieces with smaller sizes or excessively large aspect ratios cannot be stably clamped, thereby reducing the scope of application of the tooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is one of the overall structural schematic diagrams of a rapid positioning tool for stir friction welding provided by the utility model;

[0022] Figure 2 This is a second schematic diagram of the overall structure of a rapid positioning tool for friction stir welding provided by the present invention;

[0023] Figure 3 This is a schematic cross-sectional view of a rapid positioning tool for friction stir welding provided by the present invention;

[0024] Figure 4 The utility model provides a rapid positioning tool for stir friction welding Figure 2 Structure A in the middle is shown as an enlarged view.

[0025] Indicated in the figure:

[0026] 1. Base; 11. Tripod; 12. Dredging groove; 2. Fan; 21. Limiting slide; 22. Guide plate; 3. Displacement motor; 31. Gear set; 32. Bidirectional screw; 33. Threaded sleeve; 4. Load-bearing slide rail; 41. Load-bearing plate; 42. Limiting plate; 5. Clamping slide; 51. Clamping block; 52. Locking bolt; 53. Handle; 6. Rack; 61. Servo motor; 62. Moving gear. DETAILED DESCRIPTION

[0027] To make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them.

[0028] like Figure 1 and Figure 2As shown, this embodiment provides a rapid positioning tool for stir friction welding, including a base 1, a foot frame 11 fixedly connected to the bottom wall of the base 1, and a dredging groove 12 provided on the top wall of the base 1, and further comprising:

[0029] A cooling assembly is fixedly connected to the top wall of the base 1 and is used to cool the welded workpiece. The cooling assembly includes a limiting chute 21 provided on the top wall of the base 1, a guide plate 22 fixedly connected to the top wall of the base 1, and a fan 2 fixedly connected to the side wall of the base 1. The limiting chute 21, the guide plate 22, and the fan 2 are symmetrically distributed about the central axis of the base 1. When friction stir welding is performed on the metal workpiece, the fan 2 is started and conveys a high-speed airflow into the base 1. The high-speed airflow is conveyed by the limiting chute 21 and the guide plate 22 and blown toward the upper and lower surfaces of the metal workpiece, cooling the upper and lower surfaces of the metal and enhancing the cooling effect.

[0030] A displacement assembly, fixedly connected to the inner wall of the base 1, for adjusting to accommodate workpieces of different sizes;

[0031] An installation component, fixedly connected to the top wall of the displacement component, used to install the components required for clamping;

[0032] A clamping assembly, slidably connected to the top wall of the mounting assembly, for clamping a metal workpiece to be welded;

[0033] The adjusting component is fixedly connected to the top wall of the mounting component and is used to adjust the clamping position of the workpiece.

[0034] like Figure 1 and Figure 3 As shown, as a preferred embodiment, on the basis of the above method, further, the displacement assembly includes a displacement motor 3 fixedly connected to the inner wall of the base 1, a gear group 31 fixedly connected to the output end of the displacement motor 3, a bidirectional screw 32 rotatably connected to the inner wall of the base 1, and a threaded sleeve 33 threadedly connected to the outer wall of the bidirectional screw 32. The displacement motor 3 drives the bidirectional screw 32 to rotate through the gear group 31. The threaded sleeve 33 is symmetrically distributed about the central axis of the base 1. The threaded sleeve 33 extends upward through the limiting slide groove 21 to start the displacement motor 3. The displacement motor 3 drives the bidirectional screw 32 to rotate through the gear group 31.

[0035] like Figure 1 and Figure 2 As shown, as a preferred embodiment, on the basis of the above method, further, the installation component includes a load-bearing slide rail 4 fixedly connected to the top wall of the base 1, a load-bearing plate 41 fixedly connected to the top wall of the threaded sleeve 33, and a limit plate 42 fixedly connected to the top wall of the load-bearing plate 41. The threaded sleeve 33 drives the load-bearing plate 41 to move along the surface of the load-bearing slide rail 4 until the distance between the load-bearing plates 41 can accurately adapt to the metal workpiece to be welded.

[0036] like Figure 1 、 Figure 2 and Figure 4 As shown, as a preferred embodiment, on the basis of the above method, the clamping assembly further includes a clamping slide 5 slidably connected to the top wall of the limit plate 42, a clamping block 51 slidably connected to the inner wall of the clamping slide 5, a locking bolt 52 threadedly connected to the inner wall of the clamping block 51 and a handle 53 fixedly connected to the top wall of the locking bolt 52. The clamping slide 5 is symmetrically distributed about the central axis of the limit plate 42, and the clamping block 51 extends outward through the inner wall of the clamping slide 5. The locking bolt 52 is rotated by turning the handle 53. The locking bolt 52 drives the clamping block 51 to move upward, so that the clamping assembly is in an open state. The metal workpiece to be welded is placed on the clamping slide 5. The handle 53 is turned so that the locking bolt 52 drives the clamping block 51 to move downward, thereby tightly clamping the metal workpiece.

[0037] like Figure 1 and Figure 2 As shown, as a preferred embodiment, on the basis of the above method, the adjustment component further includes a rack 6 fixedly connected to the top wall of the supporting plate 41, a servo motor 61 fixedly connected to the side wall of the clamping slide 5, and a moving gear 62 fixedly connected to the output end of the servo motor 61. The moving gear 62 is engaged with the rack 6, and the servo motor 61 is started to drive the moving gear 62 to rotate. Since the moving gear 62 is engaged with the rack 6, the moving gear 62 generates a reaction force on the moving motor and the clamping slide 5, so that the clamping slide 5 moves along the surface of the limit plate 42, thereby completing the precise positioning of the clamping point on the surface of the metal workpiece.

[0038] Specifically, when the device is in use: twist the handle 53 to rotate the locking bolt 52, the locking bolt 52 drives the clamping block 51 to move upward, so that the clamping assembly is in the open state, start the displacement motor 3, the displacement motor 3 drives the bidirectional screw 32 to rotate through the gear set 31, the bidirectional screw 32 drives the threaded sleeve 33 to move in the opposite direction along the axis of the bidirectional screw 32, the threaded sleeve 33 drives the bearing plate 41 to move along the surface of the bearing slide rail 4 until the distance between the bearing plates 41 can accurately adapt to the metal workpiece to be welded, start the servo motor 61 to drive the moving gear 62 to rotate, and since the moving gear 62 is meshed with the rack 6, the moving gear 62 has an impact on the moving motor The machine and the clamping slide 5 generate a reaction force, causing the clamping slide 5 to move along the surface of the limit plate 42, completing the precise positioning of the clamping point on the surface of the metal workpiece, placing the metal workpiece to be welded on the clamping slide 5, turning the handle 53 to make the locking bolt 52 drive the clamping block 51 to move downward, tightly clamping the metal workpiece, completing the stable and rapid clamping of the metal workpiece, and starting the fan 2 when friction stir welding the metal workpiece. The fan 2 conveys high-speed airflow into the base 1, and the high-speed airflow is blown toward the upper and lower surfaces of the metal workpiece through the limit slide 21 and the guide plate 22, cooling the upper and lower surfaces of the metal, thereby enhancing the cooling effect.

[0039] All technical features in this embodiment can be freely combined according to actual needs.

[0040] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the scope of protection of the present invention.

Claims

1. A rapid positioning tool for friction stir welding, comprising a base (1), a footrest (11) fixedly connected to the bottom wall of the base (1), and a dredging groove (12) provided on the top wall of the base (1), characterized in that: Also includes: A cooling assembly, fixedly connected to the top wall of the base (1), for cooling a welded workpiece, wherein the cooling assembly comprises a limiting slide (21) provided on the top wall of the base (1), a guide plate (22) fixedly connected to the top wall of the base (1), and a fan (2) fixedly connected to a side wall of the base (1), wherein the limiting slide (21), the guide plate (22) and the fan (2) are symmetrically distributed about the central axis of the base (1); A displacement assembly fixedly connected to the inner wall of the base (1) for adjusting to accommodate workpieces of different sizes; An installation component, fixedly connected to the top wall of the displacement component, used to install the components required for clamping; A clamping assembly, slidably connected to the top wall of the mounting assembly, for clamping a metal workpiece to be welded; The adjusting component is fixedly connected to the top wall of the mounting component and is used to adjust the clamping position of the workpiece.

2. A rapid positioning tool for friction stir welding according to claim 1, characterized in that: The displacement assembly comprises a displacement motor (3) fixedly connected to the inner wall of the base (1), a gear set (31) fixedly connected to the output end of the displacement motor (3), a bidirectional screw (32) rotatably connected to the inner wall of the base (1), and a threaded sleeve (33) threadedly connected to the outer wall of the bidirectional screw (32). The displacement motor (3) drives the bidirectional screw (32) to rotate via the gear set (31). The threaded sleeve (33) is symmetrically distributed about the central axis of the base (1). The threaded sleeve (33) extends upward through the limiting slide groove (21).

3. A rapid positioning tool for friction stir welding according to claim 1, characterized in that: The mounting assembly comprises a bearing slide rail (4) fixedly connected to the top wall of the base (1), a bearing plate (41) fixedly connected to the top wall of the threaded sleeve (33), and a limiting plate (42) fixedly connected to the top wall of the bearing plate (41).

4. A rapid positioning tool for friction stir welding according to claim 3, characterized in that: The clamping assembly includes a clamping slide (5) slidably connected to the top wall of the limiting plate (42), a clamping block (51) slidably connected to the inner wall of the clamping slide (5), a locking bolt (52) threadedly connected to the inner wall of the clamping block (51), and a handle (53) fixedly connected to the top wall of the locking bolt (52), the clamping slide (5) is symmetrically distributed about the central axis of the limiting plate (42), and the clamping block (51) extends outward through the inner wall of the clamping slide (5).

5. The rapid positioning tool for friction stir welding according to claim 1, characterized in that: The adjustment assembly comprises a rack (6) fixedly connected to the top wall of the carrier plate (41), a servo motor (61) fixedly connected to the side wall of the clamping slide (5), and a moving gear (62) fixedly connected to the output end of the servo motor (61), wherein the moving gear (62) is meshed with the rack (6).

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