Rear beam four-axis machining clamp

Abstract

The four-axis machining clamp is simple in structure, convenient and efficient to assemble and disassemble and stable in clamping. The clamp comprises a clamp body, a workpiece installation plate is arranged on the clamp body, a workpiece installation position is arranged on the workpiece installation plate, clamping air cylinders are installed on the two sides of the workpiece installation position through connecting plates, rotating shafts are arranged at the output ends of the clamping air cylinders, and pressing plates are fixedly installed at the tail ends of the rotating shafts. A pressing part and a limiting part are arranged on the pressing plate, the pressing part is used for downwards pressing a machined workpiece, and the limiting part is used for horizontally limiting the machined workpiece. The utility model relates to the technical field of four-axis machining clamps.

Description

Technical Field

[0001] The utility model relates to the technical field of four-axis machining fixtures, in particular to a rear beam four-axis machining fixture. Background Technique

[0002] With the development of the machining manufacturing industry, conventional three-axis machining fixtures can no longer meet the needs of workpiece machining. The installation steps of conventional machining fixtures are cumbersome and affect the accuracy. The installation of four-axis machining fixtures is simple. When performing multi-directional machining, it is not necessary to disassemble and clamp multiple times, improving work efficiency and machining accuracy.

[0003] Chinese utility model with the publication number of CN114932439A discloses a four-axis machining fixture. In this solution, a cylinder is used in cooperation with the fixture to clamp the workpiece to be machined, and the mounting seat is driven to rotate by the rotating shaft of the motor, enabling multi-directional machining without disassembling and re-clamping. This solution can solve the problem of troublesome clamping for multi-directional machining of workpieces, but its clamping mechanism is relatively complex and easily damaged, resulting in unstable clamping and affecting the machining progress.

[0004] Therefore, it is very necessary to develop a four-axis machining fixture with convenient, efficient and stable clamping. Summary of the Utility Model

[0005] Aiming at the deficiencies in the prior art, the utility model provides a four-axis machining fixture with a simple structure, convenient and efficient loading and unloading, and stable clamping.

[0006] To achieve the above object, the utility model provides a rear beam four-axis machining fixture, including a fixture body. A workpiece mounting plate is arranged on the fixture body. A workpiece mounting position is arranged on the workpiece mounting plate. Clamping cylinders are installed on both sides of the workpiece mounting position through connecting plates. A rotating shaft is arranged at the output end of the clamping cylinder. A pressing plate is fixedly installed at the end of the rotating shaft. A pressing part and a limiting part are arranged on the pressing plate. The pressing part presses the machining workpiece downward, and the limiting part horizontally limits the machining workpiece.

[0007] Based on the above, different from conventional four-axis machining fixtures, the clamping cylinders of the utility model are installed on both sides of the workpiece mounting plate instead of directly above, optimizing the installation space of the fixture structure. At the same time, the output end of the clamping cylinder is a rotating shaft and is fixedly installed with a pressing plate, making the loading and unloading of the machining workpiece more convenient and improving the disassembly and assembly efficiency.

[0008] Further, the fixture body includes a bottom plate and support seats. The support seats are respectively installed at both ends of the upper surface of the bottom plate. A driving shaft and a driven shaft are respectively arranged on the support seats. The workpiece mounting plate is arranged between the driving shaft and the driven shaft.

[0009] Based on the above, the workpiece mounting plate is installed between the driving shaft and the driven shaft, enabling four-axis rotary machining of the fixture workpiece, reducing the clamping steps, and improving the production efficiency.

[0010] Furthermore, a driving device is provided on the driving shaft, and the driving device drives the driving shaft to rotate, thereby driving the driven shaft and the workpiece mounting plate to rotate together to achieve four-axis machining of the workpiece to be machined.

[0011] Based on the above, the driving device is used to drive the rotation of the rotating shaft to achieve four-axis machining of the workpiece to be machined.

[0012] Furthermore, a plurality of tool avoidance grooves are provided on the workpiece mounting plate, and the tool avoidance grooves are provided directly below the position to be machined of the workpiece to be machined.

[0013] Based on the above, the tool avoidance grooves are used to prevent the cutting tool from touching the workpiece mounting plate during machining, thereby avoiding damage to the cutting tool and improving the safety during the machining process.

[0014] Furthermore, a first support block, a second support block and a horizontal limit block are provided on the workpiece mounting plate. A convex block is provided on one side of the first support block to form an L-shaped limit groove. A threaded hole is provided on the L-shaped limit groove, and the threaded hole cooperates with a square block to limit the X-axis of the workpiece to be machined.

[0015] Based on the above, when clamping the workpiece to be machined, the first support block and the second support block are used to support and limit the workpiece to be machined. The threaded hole on the L-shaped limit groove can be used to cooperate with the installed square block to limit the X-axis of the workpiece to be machined, and the horizontal limit block is used to limit the horizontal direction of the workpiece to be machined.

[0016] Furthermore, a plurality of threaded mounting holes are provided on the workpiece mounting plate, and the connecting plate is connected to the workpiece mounting plate through the threaded mounting holes. The clamping cylinders are divided into two as a group and are respectively fixedly installed on the connecting plate.

[0017] Based on the above, the clamping cylinders are installed in pairs through the connecting plate, making the clamping of the workpiece to be machined more stable.

[0018] In order to more clearly elaborate the above features of the present invention and the purposes to be achieved, the following further describes the present invention in conjunction with the accompanying drawings and specific embodiments. Description of the Drawings

[0019] Figure 1 : is the perspective view a of the present invention;

[0020] Figure 2: is the perspective view b of the present utility model;

[0021] Figure 3 : is the front view of the present utility model;

[0022] Figure 4 : is the bottom view of the workpiece mounting plate;

[0023] Figure 5 : is the structural schematic diagram of the clamping cylinder and the connecting plate;

[0024] Figure 6 : is the structural schematic diagram of the first support block;

[0025] Figure 7 : is the structural schematic diagram of the machined workpiece.

[0026] Explanation of the reference numerals in the drawings: 1 fixture body; 2 workpiece mounting plate; 3 connecting plate; 4 clamping cylinder; 5 rotating shaft; 6 pressing plate; 7 pressing part; 8 limiting part; 9 machined workpiece; 10 bottom plate; 11 support seat; 12 driving shaft; 13 driven shaft; 14 driving device; 15 tool avoiding groove; 16 first support block; 17 second support block; 18 horizontal limiting block; 19 L-shaped limiting groove; 20 threaded hole; 21 square block; 22 threaded mounting hole. Detailed implementation manner

[0027] As Figures 1 to 7 shown, a four-axis machining fixture for the rear beam includes a fixture body 1. The fixture body 1 includes a bottom plate 10 and support seats 11. The support seats 11 are respectively installed at both ends of the upper surface of the bottom plate 10. The support seats 11 are respectively provided with a driving shaft 12 and a driven shaft 13. The workpiece mounting plate 2 is arranged between the driving shaft 12 and the driven shaft 13. Multiple tool avoiding grooves 15 and threaded mounting holes 22 are provided on the workpiece mounting plate 2. The tool avoiding grooves 15 are arranged directly below the positions of the machined workpiece to be machined. Clamping cylinders 4 are arranged on both sides of the workpiece mounting plate 2. The lower ends of the clamping cylinders 4 are fixedly installed with the lower end of the workpiece mounting plate 2 through a connecting plate 3. The clamping cylinders 4 are fixedly installed on the workpiece mounting plate 2 in pairs through the connecting plate 3. The connecting plate 3 is provided with counterbore holes corresponding to the threaded mounting holes 22 on the workpiece mounting plate 2, and screws with matching hole sizes are passed through the connecting plate 3 to be fixedly installed with the workpiece mounting plate 2. The output end of the clamping cylinder 4 is a rotating shaft 5, and a pressing plate 6 is fixedly installed at the end of the rotating shaft 5. The pressing plate 6 is provided with a pressing part 7 and a limiting part 8. The pressing part 7 presses the machined workpiece downward, and the limiting part 8 horizontally limits the machined workpiece 9. When disassembling the machined workpiece 9, the clamping cylinder 4 pushes the pressing plate 6 to move upward to loosen the machined workpiece 9, and then the rotating shaft 5 rotates to move the pressing plate 6 away from directly above the machined workpiece 9, and then the machined workpiece after processing is taken off.

[0028] On the workpiece mounting plate 2, a first support block 16, a second support block 17 and a horizontal limit block are provided. On one side of the first support block 16, a convex block is provided to form an L-shaped limit groove 19. A threaded hole 20 is provided on the L-shaped limit groove 19. The threaded hole 20 cooperates with the square block 21 to limit the X-axis of the workpiece 9 to be machined. When clamping the workpiece 9 to be machined, the first support block 16 and the second support block 17 are used to support and limit the workpiece 9 to be machined. The threaded hole 20 on the L-shaped limit groove 19 can cooperate with the installed square block 21 to limit the X-axis of the workpiece 9 to be machined. The horizontal limit block is used to limit the horizontal direction of the workpiece 9 to be machined. The first support block 16, the second support block 17 and the horizontal limit block are all fixedly installed on the threaded mounting holes 22 of the workpiece mounting plate 2 by screws.

[0029] The specific implementation manner of this embodiment is as follows: Select the corresponding workpiece mounting plate 2 according to the workpiece 9 to be machined, install the workpiece mounting plate 2 on the driving shaft 12 and the driven shaft 13, and then fixedly install the clamping cylinder 4 and the workpiece mounting plate 2 by using the connecting plate 3. Then fixedly install the first support block 16 and the second support block 17 on the workpiece mounting plate 2 by screws. After the fixed installation, place the workpiece 9 to be machined on the workpiece mounting plate 2, use the first support block 16 and the second support block 17 for support and limitation, adjust the placement position of the workpiece 9 to be machined and use the horizontal limit plate for limitation in the horizontal direction. Then rotate the rotating shaft 5 of the clamping cylinder 4 to place the pressing plate 6 directly above the workpiece 9 to be machined, and then contract downward to press the workpiece 9 to be machined. After the clamping work is completed, machine the workpiece 9 to be machined. During the machining process, the workpiece mounting plate 2 is provided with corresponding tool avoidance grooves 15, which can prevent the machining tool from colliding with the workpiece mounting plate 2. The workpiece 9 to be machined needs to be machined in multiple directions. When one plane is machined, use the driving device 14 to rotate the workpiece mounting plate 2 to the next machining plane, and then continue to machine the workpiece 9 to be machined. After the machining is completed, the workpiece mounting plate 2 rotates back to the initial state, the clamping cylinder 4 releases the workpiece 9 to be machined, rotates the pressing plate 6 away from directly above the workpiece 9 to be machined, and then loosens the limiting structure to remove the workpiece 9 to be machined. Thus, the machining is completed.

[0030] The above is only the optimal solution embodiment of the present invention, and is not used to limit the present invention. Various modifications or substitutions made by those skilled in the art to the present invention without departing from the essence and protection scope of the present invention should also be within the protection scope of the present invention.

Claims

1. A rear beam four-axis machining fixture, comprising a fixture body (1), characterized in that, A workpiece mounting plate (2) is provided on the fixture body (1). A workpiece mounting position (23) is provided on the workpiece mounting plate (2). Clamping cylinders (4) are mounted on both sides of the workpiece mounting position (23) through connecting plates (3). A rotating shaft (5) is provided at the output end of the clamping cylinder (4). A pressing plate (6) is fixedly mounted at the end of the rotating shaft (5). A pressing portion (7) and a limiting portion (8) are provided on the pressing plate (6). The pressing portion (7) presses the workpiece to be machined (9) downward, and the limiting portion (8) limits the workpiece to be machined (9) horizontally.

2. The four-axis machining fixture for the back beam according to claim 1, characterized in that: The fixture body (1) includes a bottom plate (10) and support seats (11). The support seats (11) are respectively mounted at both ends of the upper surface of the bottom plate (10). A driving shaft (12) and a driven shaft (13) are respectively provided on the support seats (11). The workpiece mounting plate (2) is arranged between the driving shaft (12) and the driven shaft (13).

3. The four-axis machining fixture for the back beam according to claim 1, wherein: A driving device (14) is provided on the driving shaft (12). The driving device (14) drives the driving shaft (12) to rotate, thereby driving the driven shaft (13) and the workpiece mounting plate (2) to rotate together, so as to realize four-axis machining of the workpiece to be machined (9).

4. A rear beam four-axis machining fixture according to claim 1, characterized in that: Multiple tool avoidance grooves (15) are included on the workpiece mounting plate (2). The tool avoidance grooves (15) are arranged directly below the position to be machined of the workpiece to be machined (9).

5. The four-axis machining fixture for the back beam according to claim 1, characterized in that: A first support block (16), a second support block (17) and a horizontal limiting block are provided on the workpiece mounting plate (2). A convex block is provided on one side of the first support block (16) to form an L-shaped limiting groove (19). A threaded hole (20) is provided on the L-shaped limiting groove. The threaded hole (20) cooperates with the square block (21) to limit the workpiece to be machined (9) in the horizontal direction.

6. The four-axis machining fixture for the rear beam according to claim 1, wherein: A number of threaded mounting holes (22) are provided on the workpiece mounting plate (2). The connecting plate (3) is connected to the workpiece mounting plate (2) through the threaded mounting holes (22). The clamping cylinders (4) are divided into groups of two and are respectively fixedly mounted on the connecting plate (3).

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