CN216028741U - Frock clamp suitable for cast aluminium friction stir welding - Google Patents
Frock clamp suitable for cast aluminium friction stir welding Download PDFInfo
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- CN216028741U CN216028741U CN202122482028.1U CN202122482028U CN216028741U CN 216028741 U CN216028741 U CN 216028741U CN 202122482028 U CN202122482028 U CN 202122482028U CN 216028741 U CN216028741 U CN 216028741U
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Abstract
The utility model relates to a tool clamp suitable for cast aluminum friction stir welding, which comprises a supporting piece, a bottom plate and a clamping mechanism, wherein the supporting piece is used for positioning a first workpiece to be welded; the method is characterized in that: the guide piece is also arranged adjacent to the support piece and cooperates with the support piece to enable the first workpiece to be restrained on the support piece; compared with the prior art, the tool clamp has the advantages that the first workpiece and the second workpiece are firmly constrained on the tool clamp through the matching of the supporting piece and the clamping mechanism, the welding operation can be conveniently completed on the surface of the first workpiece subsequently to weld the first workpiece and the second workpiece together, and the tool clamp is simple in structure and easy to implement.
Description
Technical Field
The utility model relates to the technical field of tool fixtures, in particular to a tool fixture suitable for cast aluminum friction stir welding.
Background
Aluminum alloys are the most widely used non-ferrous structural materials in industry and have been used in great quantities in the aerospace, automotive, mechanical manufacturing, marine and chemical industries; with the rapid development of industrial economy, the demand on aluminum alloy welded structural parts is increasing day by day, while the forming of aluminum alloy workpieces is usually carried out by adopting a die-casting process, and the surfaces which cannot be obtained by die-casting are further processed by adopting a welding mode; when another plate-shaped workpiece needs to be welded on the surface of an aluminum alloy workpiece which is formed by die casting, because the periphery of the plate-shaped workpiece, which is contacted with the aluminum alloy workpiece, is provided with a lapping surface, and the other side of the plate-shaped workpiece can be tilted when one side of the plate-shaped workpiece is welded, so that the welding precision is influenced, a clamping mechanism is usually adopted to clamp the plate-shaped workpiece in the prior art, but the clamping mechanism clamps the plate-shaped workpiece and blocks the moving track of a welding tool because the clamping mechanism blocks the moving track of the welding tool to hinder the welding processing, therefore, a Chinese invention patent No. 201210567498.0, namely 'mechanical trigger control mode clamp and control method for friction stir welding', discloses a clamp, which comprises a clamp base, a control unit, a trigger element, a limit switch and a plurality of pressure plates, wherein each pressure plate is connected with a pressure plate cylinder, each pressure plate cylinder corresponds to at least one limit switch and is controlled by the corresponding limit switch, the limit switch and the pressure plate cylinder are connected with the control unit; the trigger element is matched with the limit switch and is arranged on a welding head of the friction stir welding; the clamp can be matched with a welding tool to automatically clamp and loosen a plate-shaped workpiece, so that the problem that a clamping mechanism obstructs welding processing is solved; although the clamp can position a workpiece to be welded, before the workpiece enters the preset position, a worker needs to adjust the workpiece for multiple times to enable the workpiece to enter the preset position, so that the operation efficiency is low; in addition, in the machining process, because the welding tool needs to move on the surface of the workpiece, horizontal acting force is applied to the workpiece, so that the workpiece is unnecessarily displaced in the welding process, and welding is influenced; for this reason, further improvements to the prior art are needed.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a tool clamp which can guide a workpiece to be welded into a preset position and avoid the displacement of the workpiece in the machining process and is suitable for cast aluminum friction stir welding.
The technical scheme adopted by the utility model for solving the technical problems is as follows: this frock clamp suitable for cast aluminium friction stir welding, including:
a base plate for connecting the support member;
the support is used for supporting a first workpiece to be welded;
a clamping mechanism, which is arranged adjacent to the support, and is used for clamping the first workpiece or a second workpiece covered on the first workpiece to be welded; the method is characterized in that: also includes:
a guide member, also disposed adjacent to the support member, for guiding the first workpiece into a predetermined position and co-acting with the support member to restrain the first workpiece on the support member.
In order not to interfere with the welding process while clamping the first or second workpiece, it is preferable that the clamping mechanism includes a lever cylinder which can be opened or closed in sequence according to a processing site of the first or second workpiece to be welded.
In order to better clamp the first workpiece or the second workpiece, preferably, the lever cylinder comprises:
the cylinder body is connected to the bottom plate;
the piston rod comprises a moving part which is arranged in the cylinder body and can move up or down along the axis of the cylinder body under the action of external oil pressure, and an exposed part exposed out of the cylinder body;
the convex block is arranged on the cylinder body and keeps a preset distance with the piston rod;
the compression bar comprises a connecting part connected with the exposed part of the piston rod, a hinge part hinged with the convex block, and a clamping part which can rotate around the hinge part under the action of the piston rod to clamp the first workpiece or the second workpiece.
The first workpiece is guided into a preset position under the action of the guide piece, and is completely restrained in the vertical direction through the support piece and the clamping mechanism, and in order to ensure that the first workpiece can also be completely restrained in the transverse direction, preferably, the guide piece is provided with at least one guide piece along the circumferential direction of the first workpiece; the guide is L-shaped and comprises a transverse part connected with the bottom plate and a vertical part used for guiding and restraining the first workpiece. The guide piece with the restraint function is arranged on the circumferential direction of the first workpiece, so that the guide function is realized, the transverse movement of the first workpiece can be avoided, and the first workpiece is completely restrained in the transverse direction.
In order to better position the first workpiece, it is preferable that the bottom plate is further provided with a positioning pin, and the positioning pin can extend into the positioning hole of the first workpiece in a state where the first workpiece is placed on the support member.
In order to more conveniently hoist the tool clamp to the machine tool, preferably, a lifting ring for hoisting the tool clamp is further arranged on the bottom plate. When the tool clamp is installed, only a crane is needed to be used, and the tool clamp is hoisted to a processing machine tool through the hoisting ring.
Compared with the prior art, the utility model has the advantages that: under the effect of guide, first work piece direction gets into preset position, and the guide can also cooperate with support piece and clamping mechanism for first work piece and second work piece are by firm restraint on this frock clamp, and convenient follow-up welding operation is accomplished in order to be in the same place first work piece and second work piece welding on first work piece surface, and simple structure, easy to carry out.
Drawings
FIG. 1 is a schematic structural diagram of a tooling fixture suitable for cast aluminum friction stir welding according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a first workpiece placed on the tooling in an embodiment of the present invention;
FIG. 3 is a partial cross-sectional view of a lever cylinder in an embodiment of the present invention.
Detailed Description
The utility model is described in further detail below with reference to the accompanying examples.
As shown in FIGS. 1 to 3, the preferred embodiment of the present invention is shown. The tool clamp suitable for cast aluminum friction stir welding comprises a bottom plate 1, a support piece 2, a clamping mechanism 4, a guide piece 5 and a positioning pin 6; wherein, the bottom plate 1 is used for connecting the supporting piece 2; the support 2 is used to support a first workpiece 31 to be welded; a clamping mechanism 4 is arranged adjacent to the support 2 for clamping the first workpiece 31 or a second workpiece 32 overlaid on the first workpiece 3 to be welded; the guide parts 5 are adjacent to the support part 2 and are arranged in a plurality of numbers along the circumferential direction of the first workpiece 31, the guide parts 5 are L-shaped and comprise a transverse part 51 connected with the bottom plate 1 and a vertical part 52 used for guiding the first workpiece 31, and the vertical part 52 also has a constraint effect and can cooperate with the support part 2 to enable the first workpiece 31 to be constrained on the support part 2; in addition, the base plate 1 of the present embodiment is further provided with two positioning pins 6, and the positioning pins 6 can be inserted into the positioning holes 311 of the first workpiece 31 in a state where the first workpiece 31 is placed on the support member 2. Wherein the first workpiece 31 is guided into a preset position by the guide 5 and the first workpiece 31 is completely constrained in the vertical direction by the support 2 and the clamping mechanism 4; in addition, since the support member 2 can be inserted into the first workpiece 31, the vertical portion 52 of the guide 5 can cooperate with the support member 2 such that the first workpiece 31 can also be restrained in the lateral direction, thereby preventing lateral movement of the first workpiece 31.
In order not to interfere with the welding process while clamping the first workpiece or the second workpiece, the present embodiment employs the following structure: the clamping mechanism 4 of the present embodiment includes a lever cylinder 41 that can be opened or closed in sequence according to the machining site of the first workpiece 31 or the second workpiece 32 to be welded, the lever cylinder 41 including a cylinder body 411, a piston rod 412, a projection 413, and a pressing rod 414; wherein, the cylinder 411 is connected on the bottom plate 1; the piston rod 412 includes a moving portion 4121 disposed in the cylinder 411 and capable of moving up or down along the axis of the cylinder 411 under the action of external oil pressure, and an exposed portion 4122 exposed to the cylinder 411; the protrusion 413 is arranged on the cylinder 411 and keeps a preset distance from the piston rod 412; in addition, the pressing lever 414 includes a connecting portion 4141 connected to the exposed portion 4122 of the piston rod 412, a hinge portion 4142 hinged to the boss 413, and a clamping portion 4143 capable of rotating about the hinge portion 4142 to clamp the first workpiece 31 or the second workpiece 32 by the piston rod 412. In order to better match and weld, the lever cylinders 41 of the present embodiment are divided into a first lever cylinder 41a, a second lever cylinder 41b, a third lever cylinder 41c and a fourth lever cylinder 41d, wherein the first lever cylinder 41a is used for clamping the first workpiece 31 in order to match with the support member 2 and the guide member 5, the second lever cylinder 41b, the third lever cylinder 41c and the fourth lever cylinder 41d are used for clamping the second workpiece 32, oil inlets 415 and oil outlets 416 of the three lever cylinders 41 are different, and different oil inlets 415 and oil outlets 416 can conveniently control the respective lever cylinders 41 clamping the second workpiece 32 to be sequentially clamped or loosened; when the welding head of the machine tool is about to pass through the gap 33 blocked by the second lever oil cylinder 41b, the second lever oil cylinder 41b is loosened to expose the gap 33 to be welded, after the gap 33 is welded, the second lever oil cylinder 41b continues to clamp the second workpiece 32, and so on, the third lever oil cylinder 41c and the fourth lever oil cylinder 41d are opened in sequence, so that the clamping mechanism 4 can clamp the second workpiece 32 without influencing the welding operation of the machine tool.
Because whole frock clamp is bulky, and weight is heavier, for the convenience with this frock clamp hoist and mount to the lathe on, this embodiment has adopted following structure to realize: the bottom plate 1 of this embodiment is further provided with a lifting ring 7 for lifting the tool clamp. When the tool clamp is installed, only a crane is needed, and the tool clamp is hoisted to a processing machine tool through the hoisting ring 7.
To sum up, this frock clamp suitable for cast aluminium friction stir welding's use as follows: when welding is required to weld the second workpiece 32 to the first workpiece 31,
A. placing the first workpiece 31 on the support 2 and allowing the positioning pins 6 located on the base 1 to be snapped into the positioning holes 311 of the first workpiece 31;
B. each guide 5 constrains the first workpiece 31 against lateral movement;
C. when the first workpiece 31 is put in place, the first workpiece 31 is clamped by the first lever cylinder 41 a;
D. subsequently, the second workpiece 32 is placed on the first workpiece 31, and the second workpiece 32 is clamped by the second lever cylinder 41b, the third lever cylinder 41c, and the fourth lever cylinder 41 d;
E. starting the machine tool to perform welding operation, when a welding head of the machine tool is about to weld the gap 33 shielded by the second lever oil cylinder 41b, loosening the second lever oil cylinder 41b to expose the gap 33 to be welded, and after the gap 33 is welded, continuously clamping the second workpiece 32 by the second lever oil cylinder 41 b;
F. in the same way, opening the third lever oil cylinder 41c and the fourth lever oil cylinder 41d in sequence until the machine tool finishes the welding operation;
G. all the lever cylinders 41 are released, and the first workpiece 31 is taken out.
Claims (6)
1. The utility model provides a frock clamp suitable for cast aluminium friction stir welding, including:
a base plate (1) for connecting a support (2);
the support (2) is used for supporting a first workpiece (31) to be welded;
a clamping mechanism (4) disposed adjacent to the support (2) for clamping a first workpiece (31) or a second workpiece (32) overlaid on the first workpiece (31) to be welded; the method is characterized in that: also includes:
a guide (5), also arranged adjacent to the support (2), for guiding the first workpiece (31) into a preset position and co-acting with the support (2) to constrain the first workpiece (31) on the support (2).
2. The tool clamp suitable for cast aluminum friction stir welding according to claim 1, characterized in that: the clamping mechanism (4) comprises a lever oil cylinder (41) which can be opened or closed in sequence according to the machining site of the first workpiece (31) or the second workpiece (32) to be welded.
3. The tool clamp suitable for cast aluminum friction stir welding according to claim 2, characterized in that: the lever cylinder (41) includes:
a cylinder (411) connected to the base plate (1);
a piston rod (412) including a moving portion (4121) provided in the cylinder (411) and movable up and down along an axis of the cylinder (411) by an external oil pressure, and an exposed portion (4122) exposed to the cylinder (411);
a projection (413) which is arranged on the cylinder body (411) and keeps a preset distance with the piston rod (412); and
the pressing rod (414) comprises a connecting part (4141) connected to an exposed part (4122) of the piston rod (412), a hinge part (4142) hinged with the lug (413), and a clamping part (4143) capable of rotating around the hinge part (4142) under the action of the piston rod (412) to clamp the first workpiece (31) or the second workpiece (32).
4. The tool clamp suitable for cast aluminum friction stir welding according to any one of claims 1 to 3, characterized in that: the guide piece (5) is provided with at least one guide piece along the circumferential direction of the first workpiece (31); the guide (5) is L-shaped and comprises a transverse part (51) connected with the bottom plate (1) and a vertical part (52) used for guiding and restraining the first workpiece (31).
5. The tool clamp suitable for cast aluminum friction stir welding according to claim 4, characterized in that: the bottom plate (1) is further provided with a positioning pin (6), and the positioning pin (6) can extend into a positioning hole (311) of the first workpiece (31) when the first workpiece (31) is placed on the supporting piece (2).
6. The tool clamp suitable for cast aluminum friction stir welding according to claim 5, characterized in that: the bottom plate (1) is further provided with a lifting ring (7) for lifting the tool clamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122482028.1U CN216028741U (en) | 2021-10-14 | 2021-10-14 | Frock clamp suitable for cast aluminium friction stir welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122482028.1U CN216028741U (en) | 2021-10-14 | 2021-10-14 | Frock clamp suitable for cast aluminium friction stir welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216028741U true CN216028741U (en) | 2022-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122482028.1U Active CN216028741U (en) | 2021-10-14 | 2021-10-14 | Frock clamp suitable for cast aluminium friction stir welding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216028741U (en) |
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2021
- 2021-10-14 CN CN202122482028.1U patent/CN216028741U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 68, Yanshanhe South Road, Beilun District, Ningbo, Zhejiang 315825 Patentee after: Ningbo Xusheng Group Co.,Ltd. Address before: No. 128, yingluohe Road, Beilun District, Ningbo, Zhejiang 315825 Patentee before: NINGBO XUSHENG AUTO TECHNOLOGY Co.,Ltd. |
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| CP03 | Change of name, title or address |