Clamp tool structure for welding special-shaped workpieces

Abstract

The clamp tool structure comprises a welding table top, the interior of the welding table top is hollow to form a cavity, a first screw rod is arranged in the cavity, the two sides of the first screw rod are in threaded connection with connecting pieces, filling cavities are fixed to the top ends of the connecting pieces, and the filling cavities are communicated with the first screw rod. A pushing rod is slidably connected into the filling cavity, a clamp shell is fixed to one side of the pushing rod, a rotating core is rotatably connected to the inner wall of the clamp shell, a clamp contact is rotatably connected to the inner wall of the rotating core, and a pressure fixing part is in threaded connection with the top end face of the welding table top. The filling cavity 4 is filled with a plurality of small steel balls, and the steel balls can be redistributed according to the irregular shape of the special-shaped workpiece by means of the fluidity and the deformable characteristic of the steel balls. By means of the unique design, the clamp can be tightly attached to the surface of the special-shaped workpiece, and displacement of the special-shaped workpiece in the welding process is effectively avoided.

Description

A fixture structure for welding irregularly shaped workpieces Technical Field

[0001] This utility model relates to the field of workpiece welding technology, specifically a fixture structure for welding irregularly shaped workpieces. Background Technology

[0002] In the welding process of industrial production, the precise positioning and stable clamping of the workpiece are the key links to ensure welding quality. Traditional welding fixtures usually use a combination of a fixed worktable and a single type of clamp. On the one hand, this fixed worktable is difficult to adapt to workpieces of different shapes and sizes. When faced with diverse production needs, the tooling equipment needs to be changed frequently, which not only consumes a lot of time and cost, but also seriously affects production efficiency, and the tooling versatility is extremely poor.

[0003] On the other hand, for irregularly shaped workpieces and workpieces with complex shapes, existing tooling fixtures have obvious defects in positioning and clamping. Common fixtures are difficult to fit tightly to the irregular surface of irregularly shaped workpieces, which makes the workpieces prone to displacement during welding and cannot guarantee the accuracy and quality of welding. At the same time, for workpieces with complex shapes, existing fixtures are difficult to adjust the clamping angle flexibly and cannot achieve stable clamping of the workpiece, which greatly limits the application of welding technology in the field of complex workpiece processing. Summary of the Invention

[0004] The purpose of this invention is to provide a fixture structure for welding irregularly shaped workpieces, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fixture structure for welding irregularly shaped workpieces, comprising a welding table, the interior of which is hollow to form a cavity, a first screw being disposed inside the cavity, connecting members being threaded to both sides of the first screw, a filling cavity being fixed to the top of the connecting members, the interior of which is hollow to form a cavity, a push rod being slidably connected inside the filling cavity, a fixture housing being fixed to one side of the push rod, a rotating core being rotatably connected to the inner wall of the fixture housing, a fixture contact being rotatably connected to the inner wall of the rotating core, a pressure fixing member being threadedly connected to the top end face of the welding table, and a second fixing member being threadedly connected to the top end face of the welding table.

[0006] Preferably, the pressure fixing component includes a first fixing component, which is fixed to the top of the welding table by bolts. A counterforce member is fixed to one side of the first fixing component, and a second screw is threaded to the top of the counterforce member. A rotating handle is fixed to one end of the second screw.

[0007] Preferably, the top end face of the welding table is arrayed with multiple threaded holes, which provide a base for the installation of the pressure fastener and the second fastener.

[0008] Preferably, the interior of the filling cavity is hollow, and the cavity is filled with small steel balls. When the push rod is working, it squeezes the steel balls inside the filling cavity, so that the clamp can clamp any shape.

[0009] Preferably, the two sides of the first screw are opposite threads, so that when the first screw is rotated, the opposite threads can cause the connecting parts to translate in opposite directions at the same time.

[0010] Preferably, a through groove is provided at the center of the second fixing member, and the second fixing member is fixed to the top of the welding table by bolts and threads of the groove. The groove allows for fine-tuning of the position of the second fixing member, and the second fixing member is "T" shaped.

[0011] Preferably, the welding table is concave, and the groove at the center of the welding table can cooperate with the clamp contact to weld irregularly shaped workpieces.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. Tight clamping of irregular workpieces: The filling cavity is filled with several small steel balls. When an external force squeezes the steel balls through the push rod, the steel balls, due to their fluidity and deformability, can redistribute themselves according to the irregular shape of the workpiece. This unique design allows the fixture to fit tightly against the surface of the irregular workpiece, effectively preventing displacement of the workpiece during welding and significantly improving the accuracy and quality of welding irregular workpieces.

[0014] 2. Stable clamping of complex-shaped workpieces: When the steel balls in the filling cavity push the fixture housing to move, the rotating core rotates flexibly inside the fixture housing according to the force, thereby driving the fixture contacts to adjust the angle. This structure can perform multi-angle and stable clamping of different parts of complex-shaped workpieces, solving the problem that traditional fixtures are difficult to stably fix complex-shaped workpieces. Attached Figure Description

[0015] Figure 1 is a schematic diagram of the structure of this utility model;

[0016] Figure 2 is a top view of the overall structure in Figure 1;

[0017] Figure 3 is a detailed top-view cross-sectional view of the overall structure in Figure 1;

[0018] Figure 4 is a detailed frontal cross-sectional view of the overall structure in Figure 1.

[0019] In the diagram: 1. Welding tabletop, 2. First screw, 3. Connector, 4. Filling cavity, 5. Push rod, 6. Furniture shell, 7. Rotating core, 8. Clamp contact, 9. First fixing component, 10. Resistance component, 11. Second screw, 12. Rotating handle, 13. Second fixing component. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please refer to Figures 1-4. This utility model provides a fixture tooling structure technical solution for welding irregularly shaped workpieces: it includes a welding table 1, which is concave in shape. Its central groove cooperates with the fixture contact 8 to provide a positioning area for the workpiece and prevent displacement. The top end face of the welding table 1 is arrayed with threaded holes for installing pressure fixing parts and second fixing parts 13. The installation position can be flexibly selected according to the shape and size of the workpiece, thereby improving the versatility of the tooling.

[0022] The welding table 1 has a hollow interior forming a cavity. A first screw 2 is installed inside the cavity. The first screw 2 has opposing threads on both sides, which can drive the top filling cavity 4 and other components to adjust the horizontal position of workpieces of different widths. Both sides of the first screw 2 are threadedly connected to the connecting parts 3. The connecting parts 3 are threaded to the first screw 2 and can drive the filling cavity 4 to move. The top of the connecting parts 3 is fixed to the filling cavity 4. The filling cavity 4 has a hollow interior forming a cavity. The cavity is filled with several small steel balls. External force causes the push rod 5 to squeeze the steel balls. Due to their fluidity and variable shape, the steel balls can be redistributed according to the irregular shape of the workpiece, thereby achieving tight clamping of irregularly shaped workpieces.

[0023] A push rod 5 is slidably connected inside the filling cavity 4. A clamp housing 6 is fixed to one side of the push rod 5. A rotating core 7 is rotatably connected to the inner wall of the clamp housing 6. A clamp contact 8 is rotatably connected to the inner wall of the rotating core 7. When the steel ball in the filling cavity 4 pushes the clamp housing 6 to move, the rotating core 7 rotates in the clamp housing 6 according to the force, which drives the clamp contact 8 to adjust the angle, so as to achieve stable clamping of workpieces with complex shapes. A pressure fixing member is threadedly connected to the top end face of the welding table 1. The pressure fixing member includes a first fixing member 9. The first fixing member 9 is fixed to the top of the welding table 1 by bolts. When the first fixing member 9 is fixed by bolts, it can also fix the resisting member 10 to the top of the welding table 1 by itself.

[0024] A counterforce member 10 is fixed to one side of the first fixing member 9. The counterforce member 10 can cooperate with the second screw 11 to fix the workpiece under pressure. The top end of the counterforce member 10 is threadedly connected to the second screw 11. One end of the second screw 11 is fixed with a rotating handle 12. The operator can rotate the rotating handle 12 to fix the workpiece. The top end face of the welding table 1 is threadedly connected to the second fixing member 13. The second fixing member 13 is "T" shaped and has a through groove in the center. It is fixed to the top of the welding table 1 by bolts and threads to the groove. The end of the second fixing member 13 applies pressure to the workpiece to prevent the workpiece from shifting during welding.

[0025] Working Principle: A fixture structure for welding irregularly shaped workpieces requires the workpiece to be welded to be placed in the groove of the welding table 1. Then, the first screw 2 is rotated. When the first screw 2 rotates, it drives the connecting piece 3, which is threaded to itself, to move. When the connecting piece 3 moves, it also drives the filling cavity 4 to move. When the filling cavity 4 moves, it drives the fixture housing 6, the rotating core 7, and the fixture contact 8 to move simultaneously via the push rod 5. After moving to the designated position, the fixture contact 8 will fit into the workpiece. Because the fixture contact 8 itself is rotatable, it will rotate when it fits into the workpiece to clamp it. When the fixture contact 8 is clamped into the workpiece, the push rod 5 will squeeze the steel balls inside the filling cavity 4. Due to the fluidity and deformability of the steel balls, they will redistribute according to the irregular shape of the workpiece, thus achieving tight clamping of the irregularly shaped workpiece.

[0026] When processing workpieces such as long strips or other conventional workpieces, the second fixing member 13 is placed at the designated position at the top of the welding table 1 and fixed with bolts to clamp the conventional workpiece. If the second fixing member 13 cannot clamp the workpiece, the first fixing member 9 and the resisting member 10 can be placed at the designated position at the top of the welding table 1, and then the handle 12 can be rotated. When the handle 12 is rotated, it will drive the second screw 11 to rotate. Since the second screw 11 and the resisting member 10 are threadedly connected, the second screw 11 will move downward when it rotates, thereby pressing and fixing the workpiece.

[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 fixture structure for welding irregularly shaped workpieces, comprising a welding table (1), characterized in that, The welding table (1) has a hollow interior forming a cavity. A first screw (2) is installed inside the cavity. Connectors (3) are threaded to both sides of the first screw (2). A filling cavity (4) is fixed at the top of the connector (3). The filling cavity (4) has a hollow interior forming a cavity. A push rod (5) is slidably connected inside the filling cavity (4). A clamp housing (6) is fixed to one side of the push rod (5). A rotating core (7) is rotatably connected to the inner wall of the clamp housing (6). A clamp contact (8) is rotatably connected to the inner wall of the rotating core (7). A pressure fixing member is threaded to the top end face of the welding table (1). A second fixing member (13) is threaded to the top end face of the welding table (1).

2. The fixture structure for welding irregularly shaped workpieces according to claim 1, characterized in that, The pressure fixing component includes a first fixing component (9), which is fixed to the top of the welding table (1) by bolts. A resisting component (10) is fixed to one side of the first fixing component (9). A second screw (11) is threaded to the top of the resisting component (10), and a rotating handle (12) is fixed to one end of the second screw (11).

3. The fixture structure for welding irregularly shaped workpieces according to claim 1, characterized in that, The top end face of the welding table (1) is arrayed with multiple threaded holes, which provide a base for the installation of the pressure fastener and the second fastener (13).

4. The fixture structure for welding irregularly shaped workpieces according to claim 1, characterized in that, The interior of the filling cavity (4) is hollow, forming a cavity. The cavity is filled with small steel balls. When the push rod (5) is working, it squeezes the steel balls inside the filling cavity (4), so that the clamp can clamp any shape.

5. A fixture structure for welding irregularly shaped workpieces according to claim 1, characterized in that, The first screw (2) has opposing threads on both sides. When the first screw (2) is rotated, the opposing threads can cause the connecting piece (3) to move in opposite directions at the same time.

6. A fixture structure for welding irregularly shaped workpieces according to claim 1, characterized in that, The second fixing member (13) has a through groove at its center. The second fixing member (13) is fixed to the top of the welding table (1) by bolts and the groove thread. The groove allows for fine adjustment of the position of the second fixing member. The second fixing member (13) is "T" shaped.

7. A fixture structure for welding irregularly shaped workpieces according to claim 1, characterized in that, The welding table (1) is concave, and the groove at the center of the welding table (1) can cooperate with the clamp contact (8) to weld irregular workpieces.

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