CN210937645U

CN210937645U - Rapid clamping fixture for friction stir welding

Info

Publication number: CN210937645U
Application number: CN201922193669.8U
Authority: CN
Inventors: 姜城; 孙炜佳; 谢良稳; 黄磊; 弋翔宇; 陈禹; 唐荣耀; 魏子童; 吴帅贤; 王鹏; 肖雄; 贾帅; 闫佳钰; 朱先勇
Original assignee: Jilin University
Current assignee: Jilin University
Priority date: 2019-12-10
Filing date: 2019-12-10
Publication date: 2020-07-07
Anticipated expiration: 2029-12-10

Abstract

The utility model relates to a quick clamping anchor clamps for friction stir welding belongs to machinery. The novel steel wire rope clamping device comprises a bottom plate, wherein a fixed pressing block, a movable pressing block, a side stop block and a lead screw mounting frame are arranged on the bottom plate, a round nut and a jacking lead screw are mounted in the lead screw mounting frame, a T-shaped groove is formed in the upper surface of the bottom plate, and the T-shaped groove and the T-shaped block form a sliding connection structure. The movable pressing block is mounted on the upper surface of the bottom plate through a sliding connection structure and freely moves along the direction of the T-shaped groove. The side stop blocks are arranged on the upper surface of the bottom plate through a sliding connection structure. The screw rod mounting rack, the fixed pressing block and the movable pressing block are parallel to each other; the jacking screw rod is matched with the round nut. The fixture is reasonable in structure, reliable in positioning of the welded workpiece, capable of effectively positioning the workpiece and avoiding displacement of the welded workpiece in the welding process so as to guarantee welding quality. The welding device is suitable for workpieces of different sizes to be used during welding, and has good use effect.

Description

Rapid clamping fixture for friction stir welding

Technical Field

The utility model relates to the field of machinary, in particular to anchor clamps indicate a quick clamping anchor clamps for friction stir welding especially.

Background

The friction stir welding is a solid phase welding method which is characterized in that a stirring head rotating at a high speed moves along a welding direction after being pricked into a workpiece, friction heat is generated at a contact part of the stirring head and the workpiece, so that a plastic softening layer is formed on metal around the stirring head, the softening layer metal fills a cavity formed behind a stirring pin under the rotation action of the stirring head, and material connection is realized under the stirring and extruding actions of a shaft shoulder of the stirring head and the stirring pin. Adopt friction stir welding to need will be welded the work piece clamp and fix to stirring head inserts and rotatory when preventing to weld and causes the work piece that is welded to shift and can't carry out effective welding. The existing clamp for friction stir welding has a common positioning effect on a welded workpiece, is relatively complicated in the clamping process of the workpiece, and wastes valuable time. And the size requirement of the workpiece to be welded is relatively fixed, and the welding of the workpiece with variable size cannot be well realized. The measurement of various parameters in the welding process does not reserve the instrument installation position, and the workload of the measurement work is increased.

Disclosure of Invention

An object of the utility model is to provide a quick clamping anchor clamps for friction stir welding has solved the above-mentioned problem that prior art exists. The utility model discloses can carry out quick effective location to the work piece that is welded, and can realize the clamping welding to the work piece in the certain size range.

The above object of the utility model is realized through following technical scheme:

a quick clamping anchor clamps for friction stir welding, including bottom plate 1, be equipped with fixed compact heap 2, movable compact heap 3, side dog 4, lead screw mounting bracket 5 on bottom plate 1, install round nut 6, jack-in lead screw 7 in the lead screw mounting bracket 5, seted up T type groove 8 on bottom plate 1 upper surface, T type groove 8 constitutes sliding connection structure with T type piece 9 and anchor clamps construction bolt 10.

The movable pressing block 3 is arranged on the upper surface of the bottom plate 1 through a sliding connection structure, and the movable pressing block 3 freely moves along the direction of the T-shaped groove 8; the hold-down bolts 11 are mounted on the movable holding-down block 3 and are distributed at equal intervals along the length direction.

The side stop block 4 is arranged on the upper surface of the bottom plate 1 through a sliding connection structure.

The lead screw mounting rack 5 is connected with the bottom plate 1 through a lead screw bracket mounting bolt 13; the screw rod mounting rack 5, the fixed pressing block 2 and the movable pressing block 3 are parallel to each other; the round nut 6 is arranged on the lead screw mounting rack 5 in a welding mode; the jacking screw rod 7 is matched with the round nut 6.

The fixed pressing block 2 is installed on the bottom plate 1 through a fixed pressing block installation bolt 12, and the pressing bolts 11 are installed on the fixed pressing block 2 and are distributed at equal intervals along the length direction.

The beneficial effects of the utility model reside in that: the utility model provides an anchor clamps are rational in infrastructure, and is reliable to the location of being welded the work piece, are suitable for the work piece of multiple not unidimensional to use when the welding, have fine result of use. Adopt the utility model discloses an anchor clamps, when being used for by the welding work piece, place the work piece in the location area earlier, remove the side dog, make it be in suitable position. The side surface of a workpiece to be welded is abutted against the side stop block, and the T-shaped groove and the T-shaped block are matched to form a sliding connection structure, so that the side stop block cannot overturn when bearing the acting force of the workpiece, and cannot be separated from the bottom plate when the workpiece is positioned in the welding line direction. And then moving the movable pressing block along the length direction of the T-shaped groove to enable the movable pressing block to contact the workpiece to be welded. And then, screwing in the jacking lead screw to press the movable pressing block, so as to press the workpiece. The front and back directions of the workpiece are positioned. And then the pressing bolts on the movable pressing block and the fixed pressing block are rotated to realize the vertical positioning of the welding workpiece. The T-shaped groove and the T-shaped block are matched to form a sliding connection structure, so that the movable pressing block cannot be separated from the bottom plate while the movable pressing block is positioned in the vertical direction of the workpiece. Therefore, the workpiece is effectively positioned, and the welded workpiece is prevented from displacing in the welding process, so that the welding quality is ensured. The welding machine is suitable for workpieces of various sizes to be used during welding, and has good use effect.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate example embodiments of the invention and together with the description serve to explain the invention without limitation.

Fig. 1 is a schematic view of the structure of the present invention;

fig. 2 is a schematic bottom view of the present invention;

FIG. 3 is a cross-sectional view A-A of FIG. 1;

fig. 4 is an isometric view of a base plate of the present invention;

fig. 5 is a schematic structural diagram of the movable pressing block of the present invention.

In the figure: 1. a base plate; 2. fixing the compression block; 3. a movable compression block; 4. a side stop block; 5. a lead screw mounting bracket; 6. a round nut; 7. pushing a lead screw; 8. a T-shaped groove; 9. a T-shaped block; 10. installing a bolt by a clamp; 11. pressing the bolt; 12. fixing a pressing block mounting bolt; 13. a screw bracket mounting bolt; 14. and (5) welding the platform by friction stir welding.

Detailed Description

The details of the present invention and its embodiments are further described below with reference to the accompanying drawings.

Referring to fig. 1 to 5, the utility model discloses a quick clamping anchor clamps for friction stir welding, including bottom plate 1, and locate fixed compact heap 2, movable compact heap 3, side dog 4, lead screw mounting bracket 5 on the bottom plate 1 install round nut 6, the top lead screw 7 in the lead screw mounting bracket. The upper surface of the bottom plate 1 is provided with a T-shaped groove 8, a T-shaped block 9 which forms a sliding connection structure with the T-shaped groove, a clamp mounting bolt 10, a pressing bolt 11, a fixed pressing block mounting bolt 12, a lead screw bracket mounting bolt 13 and a friction stir welding platform 14.

The fixed pressing block 2 is installed on the bottom plate 1 through a fixed pressing block installation bolt 12, and the pressing bolts 11 are installed on the fixed pressing block 2 and are arranged at equal intervals along the length direction. The side block 4 is installed on the upper surface of the bottom plate 1 through a sliding connection structure consisting of a T-shaped groove 8, a T-shaped block 9 and an installation bolt 10 which are arranged on the bottom plate 1. The movable pressing block 3 is arranged on the upper surface of the bottom plate 1 through a sliding connection structure formed by a T-shaped groove 8, a T-shaped block 9 and a mounting bolt 10 which are arranged on the bottom plate 1, and the movable pressing block 3 can freely move along the direction of the T-shaped groove 8. The hold-down bolts 11 are mounted on the movable holding-down block 3 and are distributed at equal intervals along the length direction. The screw rod mounting rack 5 is connected with the bottom plate 1 through a screw rod bracket mounting bolt 13. The screw rod mounting frame 5, the fixed pressing block 2 and the movable pressing block 3 are parallel to each other. The round nut 6 is mounted on the screw mounting bracket 5 by welding. The jacking screw rod 7 is matched with the round nut 6.

When the welding device is used for a workpiece to be welded, the workpiece is placed in the positioning area, and the side stop 4 is moved to be in a proper position. The side face of a workpiece to be welded is abutted against the side stop block 4, and the T-shaped groove 8 and the T-shaped block 9 are matched to form a sliding connection structure, so that the side stop block 4 cannot overturn when bearing the acting force of the workpiece, and cannot be separated from the bottom plate 1 when the workpiece is positioned in the direction of a welding seam. And then the movable pressing block 3 is moved along the length direction of the T-shaped groove, so that the movable pressing block 3 is contacted with the workpiece to be welded. Then the jacking screw rod 7 is screwed in to press the movable pressing block 3, and further the workpiece is pressed. The front and back directions of the workpiece are positioned. And then the compression bolts 11 on the movable compression block 3 and the fixed compression block 2 are rotated to realize the vertical positioning of the welding workpiece. Because the T-shaped groove 8 and the T-shaped block 9 are matched to form a sliding connection structure, the movable pressing block 3 cannot be separated from the bottom plate 2 while the positioning in the vertical direction of the workpiece is realized. Therefore, the workpiece is effectively positioned, and the welded workpiece is prevented from displacing in the welding process, so that the welding quality is ensured. The welding machine is suitable for workpieces of various sizes and shapes to be used during welding, and has good use effect.

Example (b):

the base plate 1 is in this example bolted to the friction stir welding platform 14 by means of a clamp.

Referring to fig. 1 to 5, a friction stir welding jig includes a flat plate-shaped base plate 1, and a movable pressing block 3, a fixed pressing block 2, a screw mount 5, a jack screw 7, and a side stopper 4 mounted on the base plate 1. The movable pressing block 3, the fixed pressing block 2 and the lead screw mounting rack 5 are installed in parallel. The screw rod mounting frame 5 is installed on the outer side of the movable pressing block 3. The jacking screw 7 is perpendicular to the movable pressing block 3 and is arranged on the screw mounting rack 5. The side block 4 is installed inside perpendicularly to the movable pressing block 3. The movable pressing block 3, the fixed pressing block 2, the side stop block 4 and the bottom plate 1 form an accommodating space of a welded workpiece together. The lower part of the bottom plate is provided with a groove, and installation positions are reserved for a temperature measuring device and a cooling device at the welding seam. The upper portion of the bottom plate is provided with a T-shaped groove 8, a T-shaped block 9 is arranged in the T-shaped groove, the T-shaped block 9 is connected with the movable pressing block 3 through a clamp mounting bolt 10, the movable pressing block and the fixed pressing block are designed to be Z-shaped, a threaded hole is formed in the cantilever, and the lower pressure required by clamping a workpiece is provided by screwing the bolt.

The bottom plate 1 is installed on a workbench 14 of friction stir welding equipment through bolts. Two T-shaped grooves 8 are formed in the upper side of the bottom plate 1, the directions of the two T-shaped grooves are parallel to each other, and the two T-shaped grooves are distributed on the left side and the right side of the bottom plate 1. An instrument groove is formed in the lower side of the bottom plate 1, and the direction of the instrument groove is perpendicular to that of the T-shaped groove. The front side of the upper surface of the bottom plate 1 is provided with a mounting position of a lead screw mounting rack 5, and the mounting position is provided with two mounting holes. The rear side of the upper surface of the bottom plate is provided with a mounting hole for fixing the pressing block 2.

The fixed pressing block 2 is installed on the upper surface of the base plate 1 through a fixed pressing block installation bolt 12, the fixed pressing block 2 is designed to be Z-shaped, a plurality of threaded holes which are arranged at intervals along the length direction of the fixed pressing block are formed in an upper cantilever of the Z-shaped pressing block, the pressing bolt 11 is installed in the threaded holes which are arranged at intervals, and pressing in the vertical direction of a workpiece is achieved through rotating the pressing bolt 11.

The movable pressing block 3 is installed on the upper surface of the base plate through a positioning structure, the positioning structure comprises a T-shaped block 9 installed in a T-shaped groove 8 of the base plate, the T-shaped groove 8 formed in the upper surface of the base plate, and mounting holes formed in two ends of the movable pressing block 3. The T-shaped block 9 is connected with the movable pressing block 3 through a bolt. The T-shaped block 9 and the T-shaped groove 8 are matched to form a sliding connection mechanism. The movable pressing block 3 is designed to be Z-shaped, a plurality of threaded holes are formed in an upper cantilever of the movable pressing block at intervals along the length direction of the movable pressing block, the pressing bolts 11 are installed in the threaded holes at intervals, and pressing of the workpiece in the vertical direction is achieved by rotating the pressing bolts.

The side block 4 is mounted on the upper surface of the bottom plate through a positioning structure. The positioning structure comprises a T-shaped block 9 arranged in a T-shaped groove 8 of the bottom plate, a T-shaped groove 8 formed in the upper surface of the bottom plate and a mounting hole arranged in the side stop block. The T-shaped block 8 is connected with the side stop block 4 through a clamp mounting bolt 10. The T-shaped block 9 and the T-shaped groove 8 are matched to form a sliding connection mechanism. The outer contour of the side stop block 4 is a cuboid.

The screw rod mounting rack 5 is mounted on the upper surface of the bottom plate 1 through bolt connection and is mounted in parallel with the movable pressing block 3 and the fixed pressing block 2. And a mounting hole of a round nut 6 is formed in the lead screw mounting frame 5.

The round nut 6 is installed in the mounting hole of the screw rod mounting frame 5, and the round nut 6 is connected with the screw rod mounting frame 5 in a welding mode.

The jacking lead screw 7 and the round nut 6 are matched to form a kinematic pair, one end of the jacking lead screw 7 is in contact with the movable pressing block 3, and a handle is arranged at one end of the jacking lead screw.

The above description is only a preferred example of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made to the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a quick clamping anchor clamps for friction stir welding which characterized in that: the novel fixture comprises a bottom plate (1), wherein a fixed pressing block (2), a movable pressing block (3), a side stop block (4) and a lead screw mounting frame (5) are arranged on the bottom plate (1), a round nut (6) and a jacking lead screw (7) are mounted in the lead screw mounting frame (5), a T-shaped groove (8) is formed in the upper surface of the bottom plate (1), and the T-shaped groove (8), the T-shaped block (9) and a fixture mounting bolt (10) form a sliding connection structure.

2. The quick clamping fixture for friction stir welding according to claim 1, wherein: the movable pressing block (3) is arranged on the upper surface of the bottom plate (1) through a sliding connection structure, and the movable pressing block (3) freely moves along the direction of the T-shaped groove (8); the pressing bolts (11) are arranged on the movable pressing block (3) and are distributed at equal intervals along the length direction.

3. The quick clamping fixture for friction stir welding according to claim 1, wherein: the side stop blocks (4) are arranged on the upper surface of the bottom plate (1) through a sliding connection structure.

4. The quick clamping fixture for friction stir welding according to claim 1, wherein: the screw rod mounting rack (5) is connected with the bottom plate (1) through a screw rod bracket mounting bolt (13); the screw rod mounting rack (5), the fixed pressing block (2) and the movable pressing block (3) are parallel to each other; the round nut (6) is arranged on the lead screw mounting rack (5) in a welding mode; the jacking lead screw (7) is matched with the round nut (6).

5. The quick clamping fixture for friction stir welding according to claim 1, wherein: the fixed pressing block (2) is installed on the bottom plate (1) through a fixed pressing block installation bolt (12), and the pressing bolts (11) are installed on the fixed pressing block (2) and are distributed at equal intervals along the length direction.