Welding fixture for friction stir welding of butt joint

Abstract

The utility model relates to the technical field of friction stir welding, in particular to a butt joint friction stir welding clamp which comprises a machine table, a mounting groove is formed in the middle of the machine table, lifting welding tables are arranged on the inner side of the mounting groove and the bottom of the machine table, and each lifting welding table comprises a welding seat arranged on the inner side of the mounting groove. Clamping assemblies are arranged on the two sides of the top of the welding base, the side wall of the welding base is slidably connected with the inner wall of the mounting groove, a mounting box is fixedly connected to the bottom of the machine table, a sliding groove is formed in the welding base, a sliding rod is arranged on the inner side of the sliding groove, and the two ends of the sliding rod are slidably connected with the inner walls of the two sides of the sliding groove correspondingly. Sliding blocks are symmetrically arranged on the two sides of the sliding rod, the inner walls of the two sliding blocks are slidably connected with the surface of the sliding rod, and the distance between the clamps and the distance between the clamps and the stirring head can be adjusted according to the specification of a butt joint to be welded.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of friction stir welding, and specifically relates to a butt joint friction stir welding fixture. BACKGROUND

[0002] Friction stir welding is a new solid-phase connection technology, and its principle is that the plastic flow of the welded material is generated under the combined action of the high-speed rotating friction heat and axial extrusion of a stirring head, and the butt joint is broken to form a solid-phase connection. During the welding of the butt joint, a fixture is used to clamp and fix the butt joint to facilitate the welding work. However, the existing fixture can only adjust the clamping width and clamp joints of different widths, but cannot adjust the distance between the fixture and the stirring head. The height of joints of different specifications is also different, and the height between the fixture and the stirring head cannot be adjusted, which affects the welding quality. SUMMARY

[0003] The utility model aims at providing a butt joint friction stir welding fixture to solve the problems in the background art.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme.

[0005] A butt joint friction stir welding fixture, comprising a machine table, a mounting groove is formed in the middle of the machine table, and a lifting welding table is arranged on the inner side of the mounting groove and the bottom of the machine table.

[0006] The lifting welding table comprises a welding seat arranged on the inner side of the mounting groove, clamping assemblies are arranged on both sides of the top of the welding seat, the side wall of the welding seat is slidably connected with the inner wall of the mounting groove, the bottom of the machine table is fixedly connected with a mounting box, a sliding groove is formed in the inside of the welding seat, a sliding rod is arranged on the inner side of the sliding groove, the two ends of the sliding rod are slidably connected with the inner walls of the two sides of the sliding groove, sliding blocks are symmetrically arranged on the two sides of the sliding rod, the inner walls of the two sliding blocks are slidably connected with the surface of the sliding rod, a driving motor is fixedly connected to the bottom of the left side of the mounting box, a double-thread screw rod is arranged in the inner cavity of the mounting box, moving blocks are threadedly connected to the surfaces of the two sides of the double-thread screw rod, and connecting shafts are rotatably connected to the top ends of the two moving blocks.

[0007] As a preferred scheme of the utility model, the two connecting shafts are arranged in an X shape, one end of each of the two connecting shafts is rotatably connected with the bottom of each of the two sliding blocks, and the middle parts of the two connecting shafts are rotatably connected through a pin shaft.

[0008] As a preferred scheme of the utility model, the output end of the driving motor extends into the inside of the mounting box, one end of the double-thread screw rod is rotatably connected with the inner wall of the mounting box, and the other end of the double-thread screw rod is connected with the output end of the driving motor through a shaft coupling.

[0009] As the preferred scheme of the utility model, the clamping assembly comprises fixed plates arranged at the top of the welding seat on both sides, the bottom of the two fixed plates is fixedly connected with the top of the welding seat, and the middle part of the two fixed plates is penetrated by hydraulic rods.

[0010] As the preferred scheme of the utility model, the clamping assembly comprises fixed plates arranged at the top of the welding seat on both sides, the bottom of the two fixed plates is fixedly connected with the top of the welding seat, and the middle part of the two fixed plates is penetrated by hydraulic rods.

[0011] As the preferred scheme of the utility model, the clamping assembly comprises fixed plates arranged at the top of the welding seat on both sides, the bottom of the two fixed plates is fixedly connected with the top of the welding seat, and the middle part of the two fixed plates is penetrated by hydraulic rods.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] 1、In the utility model, the welding seat can be driven to move up and down by the two connecting shafts, so that the distance between the welding seat and the stirring head can be adjusted, and different specifications of butt joints can be conveniently welded. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic view of the utility model;

[0015] Figure 2 It is an enlarged structural schematic view of the position A of the utility model;

[0016] Figure 3 It is a sectional structural schematic view of the lifting welding table.

[0017] In the drawing: 1, machine table; 2, mounting groove; 3, lifting welding table; 301, welding seat; 302, mounting box; 303, sliding groove; 304, sliding rod; 305, sliding block; 306, driving motor; 307, double thread screw rod; 308, moving block; 309, connecting shaft; 4, clamping assembly; 401, fixed plate; 402, hydraulic rod; 403, limiting rod; 404, clamping plate. DETAILED DESCRIPTION

[0018] The technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0019] For the convenience of understanding the utility model, the utility model will be described more fully below with reference to the relevant drawings, several embodiments of the utility model are given, however, the utility model can be realized in many different forms, and is not limited to the embodiments described herein, on the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0020] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can be intervening elements, and when an element is referred to as being "connected to" another element, it can be directly connected to the other element or there can be intervening elements, the terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs, the terminology used in the specification of the utility model herein is only for the purpose of describing specific embodiments and is not intended to limit the utility model, the term "and / or" used herein includes any and all combinations of one or more of the associated listed items.

[0022] Embodiments, please refer to Figure 1 、 Figure 3 The utility model provides a technical scheme:

[0023] A butt joint agitator friction welding fixture, including machine table 1, the middle part of machine table 1 is provided with installation slot 2, the inner side of installation slot 2 and the bottom of machine table 1 are provided with lifting welding platform 3, lifting welding platform 3 includes the welding seat 301 of setting in the inner side of installation slot 2, the both sides of the top of welding seat 301 are provided with clamping assembly 4, the side wall of welding seat 301 is slidably connected with the inner wall of installation slot 2, the bottom of machine table 1 is fixedly connected with installation box 302, the inside of welding seat 301 is provided with sliding slot 303, the inner side of sliding slot 303 is provided with sliding rod 304, the both ends of sliding rod 304 are slidably connected with the both sides inner wall of sliding slot 303, the both sides of sliding rod 304 are provided with sliding block 305, and the inner wall of two sliding blocks 305 is slidably connected with the surface of sliding rod 304, the bottom of the left side of installation box 302 is fixedly connected with drive motor 306, the inner chamber of installation box 302 is provided with double thread screw rod 307, and the both side surfaces of double thread screw rod 307 are threadedly connected with moving block 308, and the top of two moving blocks 308 is rotatably connected with connecting shaft 309.

[0024] As Figure 3As shown, the two connecting shafts 309 are arranged in an X shape. The ends of the two connecting shafts 309 away from the moving block 308 are rotatably connected to the bottom of the two sliders 305 respectively. The middle parts of the two connecting shafts 309 are rotatably connected by a pin. The output end of the drive motor 306 extends into the interior of the mounting box 302. One end of the double-threaded screw 307 is rotatably connected to the inner wall of the mounting box 302. The other end of the double-threaded screw 307 is connected to the output end of the drive motor 306 through a coupling.

[0025] like Figure 1 , Figure 2 As shown, the clamping assembly 4 includes two fixing plates 401 disposed on the top sides of the welding base 301. The bottom of the two fixing plates 401 is fixedly connected to the top of the welding base 301. A hydraulic rod 402 passes through the middle of the two fixing plates 401. A clamping plate 404 is fixedly connected to the end of the two hydraulic rods 402 that is close to each other. Limiting rods 403 are fixedly connected to the two ends of the clamping plates 404 that are far apart from each other. The four limiting rods 403 pass through the two ends of the two fixing plates 401 respectively. The outer walls of the four limiting rods 403 are slidably connected to the inner walls of the two fixing plates 401 respectively.

[0026] The working process of this utility model is as follows: When in use, the butt joint to be welded is placed on the top of the welding seat 301. The hydraulic rods 402 on both sides can push the two clamping plates 404 closer to the center to clamp and fix the butt joint, so as to avoid displacement during the welding process and affect the welding effect. At the same time, the drive motor 306 is started to drive the double threaded screw 307 to rotate. The moving blocks 308 on both sides of the surface of the double threaded screw 307 can move away from or closer to each other. The two connecting shafts 309 drive the welding seat 301 to change height, thereby adjusting the distance between the butt joint and the stirring head, so as to realize the welding of joints of different specifications.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A welding fixture for friction stir welding of butt joints, comprising a machine base (1), characterized in that: The machine base (1) has an installation groove (2) in the middle, and a lifting welding table (3) is provided on the inner side of the installation groove (2) and the bottom of the machine base (1). The lifting welding table (3) includes a welding seat (301) disposed inside the mounting groove (2). Clamping components (4) are provided on both sides of the top of the welding seat (301). The side wall of the welding seat (301) is slidably connected to the inner wall of the mounting groove (2). The bottom of the machine base (1) is fixedly connected to a mounting box (302). A sliding groove (303) is provided inside the welding seat (301). A sliding rod (304) is provided inside the sliding groove (303). The two ends of the sliding rod (304) are respectively connected to the two sides of the sliding groove (303). The inner wall of the slide rod (304) is slidably connected to the slide rod (304). Slider blocks (305) are symmetrically arranged on both sides of the slide rod (304). The inner walls of the two sliders (305) are slidably connected to the surface of the slide rod (304). A drive motor (306) is fixedly connected to the bottom left side of the mounting box (302). A double-threaded screw (307) is provided in the inner cavity of the mounting box (302). Moving blocks (308) are threadedly connected to both sides of the double-threaded screw (307). A connecting shaft (309) is rotatably connected to the top of the two moving blocks (308).

2. The welding fixture for friction stir welding of butt joints according to claim 1, characterized in that: The two connecting shafts (309) are arranged in an X shape. The ends of the two connecting shafts (309) away from the moving block (308) are respectively rotatably connected to the bottom of the two sliders (305). The middle parts of the two connecting shafts (309) are rotatably connected by a pin.

3. The welding fixture for friction stir welding of butt joints according to claim 1, characterized in that: The output end of the drive motor (306) extends into the interior of the mounting box (302), one end of the double-stitched screw (307) is rotatably connected to the inner wall of the mounting box (302), and the other end of the double-stitched screw (307) is connected to the output end of the drive motor (306) through a coupling.

4. The welding fixture for friction stir welding of butt joints according to claim 1, characterized in that: The clamping assembly (4) includes fixing plates (401) disposed on both sides of the top of the welding seat (301). The bottom of the two fixing plates (401) is fixedly connected to the top of the welding seat (301), and a hydraulic rod (402) passes through the middle of the two fixing plates (401).

5. A welding fixture for friction stir welding of butt joints according to claim 4, characterized in that: Each of the two hydraulic rods (402) has a clamping plate (404) fixedly connected to one end of the two rods that are close to each other, and a limit rod (403) is fixedly connected to one end of each clamping plate (404) that is far away from each other.

6. A welding fixture for friction stir welding of butt joints according to claim 5, characterized in that: The four limiting rods (403) pass through both ends of the two fixing plates (401) respectively, and the outer walls of the four limiting rods (403) are slidably connected to the inner walls of the two fixing plates (401) respectively.

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