Clamping device for aeronautical aluminum alloy curved-surface-shaped workpiece

Abstract

The utility model discloses an aviation aluminum alloy curved-surface-shaped workpiece clamping device which comprises a workbench, the middle of the workbench is connected with a pulling column in a sliding mode, the outer side wall of the pulling column is connected with a plurality of rotating rods in a rotating mode, one end of each rotating rod is connected with a clamping plate in a rotating mode, and the other end of each rotating rod is connected with a clamping plate. And one sides of the multiple clamping plates are fixedly connected with rubber gaskets, the lower end of the workbench is fixedly connected with a base, a pulling air cylinder is fixedly installed in the middle of the interior of the base, the output end of the pulling air cylinder is fixedly connected with a pulling frame, and the middle of the upper end of the pulling frame is fixedly connected with one end of the pulling column. According to the clamping device, the pulling cylinder is started, the pulling column is pulled downwards, the four rotating rods rotate along the pulling column, the four clamping plates slide in the guide grooves respectively, the inner wall of a workpiece is clamped by the outer surface of a rubber gasket, the structure is simple, operation is convenient, and the clamping efficiency of the workpiece is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of aviation aluminum parts processing equipment, in particular to an aviation aluminum alloy curved surface workpiece clamping device. Background Art

[0002] Aviation aluminum alloy curved workpieces are a type of structural parts commonly used in the aviation industry. Aviation aluminum alloy curved workpieces include tank bottoms, head fairings, engine lips and other parts. Aluminum alloy curved workpieces often have complex geometric shapes, including cones, spherical bottoms, cylinders and ellipsoidal bottoms. These shapes are designed to meet specific aerodynamic and mechanical performance requirements. Therefore, during production, a clamping device is required to fix the workpiece to prevent it from moving during processing.

[0003] In the prior art, for example, Chinese patent CN217914992U discloses an aviation aluminum alloy curved workpiece clamping device, which effectively solves the problem that the current aviation aluminum alloy curved workpiece clamping device has poor clamping effect on cylindrical irregular parts. The device comprises two fixing rings, a fixing plate is installed at an equal angle between the two fixing rings, a clamping assembly is installed inside the fixing plate, the clamping assembly comprises a screw barrel symmetrically installed on the fixing plate, a screw is connected to the internal thread of the screw barrel, a pressure block is provided at one end of the screw near the inside of the fixing ring, a ball groove is provided on one side of the pressure block near the screw, and a rotating ball is installed at one end of the screw near the pressure block.

[0004] Although the above patent facilitates the clamping of arc surfaces of different angles by the cooperation of the pressure block, the first clamping block, the screw and other structures, thereby improving the clamping effect, when clamping the workpiece, multiple screws need to be rotated to fix it, which is cumbersome, time-consuming and labor-intensive during clamping, and thus inconvenient to use. Utility Model Content

[0005] The purpose of the utility model is to provide an aviation aluminum alloy curved surface workpiece clamping device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an aviation aluminum alloy curved workpiece clamping device, comprising a workbench, a pulling column is slidably connected to the middle part of the workbench, and the outer wall of the pulling column is rotatably connected to a plurality of rotating rods, one end of each of the rotating rods is rotatably connected to a clamping plate, and one side of each of the clamping plates is fixedly connected to a rubber gasket, the lower end of the workbench is fixedly connected to a base, a pulling cylinder is fixedly installed in the inner middle part of the base, the output end of the pulling cylinder is fixedly connected to a pulling frame, and the upper middle part of the pulling frame is fixedly connected to one end of the pulling column.

[0007] As a further preferred embodiment of the present technical solution, a through groove is penetrated on one side of the workbench, and a special-shaped rod is rotatably connected to the inner wall of the through groove, a sliding column is fixedly connected to one side of the pulling frame, a sliding groove is penetrated on one side of the special-shaped rod, and the outer wall of the sliding column is slidably connected to the inner wall of the sliding groove, and a movable frame is slidably connected to one side of the special-shaped rod.

[0008] As a further preferred embodiment of the present technical solution, the upper end of the workbench is fixedly connected to a limiting guide rail, and the outer side wall of the limiting guide rail is slidably connected to the inner wall of the movable frame.

[0009] As a further preferred embodiment of the present technical solution, a clamping frame is slidably connected to the inner wall of the movable frame, a return spring is fixedly connected to one side of the clamping frame, and one end of the return spring is fixedly connected to the inner wall of the movable frame.

[0010] As a further preferred embodiment of the present technical solution, the other sides of the plurality of clamping plates are fixedly connected with reinforcing ribs, and the lower ends of the plurality of reinforcing ribs are slidably connected to the upper end of the workbench.

[0011] As a further preferred embodiment of the present technical solution, one end of each of the plurality of clamping plates is fixedly connected to a sliding rod, a plurality of guide grooves are penetrated through the upper end of the workbench, and the outer side walls of the plurality of sliding rods are respectively slidably connected to the inner walls of the plurality of guide grooves.

[0012] As a further preferred embodiment of the present technical solution, two guide frames are fixedly connected to the upper end of the base, and one side of the two guide frames is slidably connected to two sides of the pulling frame respectively.

[0013] The utility model provides a clamping device for aviation aluminum alloy curved surface workpieces, which has the following beneficial effects:

[0014] (1) The utility model opens the pulling cylinder to pull the pulling column downward, and the four rotating rods rotate along the pulling column, so that the four clamping plates slide in the guide grooves respectively, so that the outer surface of the rubber gasket clamps the inner wall of the workpiece. This structure is simple, easy to operate, and improves the clamping efficiency of the workpiece.

[0015] (2) The utility model pulls the pulling frame downward by pulling the cylinder, while the sliding column slides in the sliding groove, and one end of the special-shaped rod is pressed downward, so that one side of the special-shaped rod rotates in the through groove, and the moving frame slides on the limit guide rail, so that the two clamping frames clamp the outer surface of the workpiece, effectively improving the stability of the clamping device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the utility model from a first perspective;

[0017] Figure 2 This is a schematic diagram of the structure of the utility model from a second viewing angle;

[0018] Figure 3 for Figure 2 A partial enlarged schematic diagram of the middle A area;

[0019] Figure 4 It is a schematic diagram of the connection relationship between the pulling frame and the special-shaped rod in the utility model;

[0020] In the figure: 1. workbench; 2. pulling cylinder; 3. pulling frame; 4. clamping plate; 5. pulling column; 6. rotating rod; 7. rubber gasket; 8. special-shaped rod; 9. base; 10. moving frame; 11. guide frame; 12. limit guide rail; 13. through groove; 14. guide groove; 15. reinforcing rib; 16. sliding column; 17. sliding groove; 18. reset spring; 19. clamping frame; 20. sliding rod. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0022] The utility model provides a technical solution: Figure 1 - Figure 4 As shown, in the present embodiment, an aviation aluminum alloy curved workpiece clamping device comprises a workbench 1, a pulling column 5 is slidably connected to the middle part of the workbench 1, a plurality of rotating rods 6 are rotatably connected to the outer wall of the pulling column 5, one end of each of the plurality of rotating rods 6 is rotatably connected to a clamping plate 4, one side of each of the plurality of clamping plates 4 is fixedly connected to a rubber gasket 7, a base 9 is fixedly connected to the lower end of the workbench 1, a pulling cylinder 2 is fixedly installed in the middle part of the inner part of the base 9, a pulling frame 3 is fixedly connected to the output end of the pulling cylinder 2, and the middle part of the upper end of the pulling frame 3 is fixedly connected to one end of the pulling column 5, by opening the pulling cylinder 2, the pulling column 5 is pulled downward, and the four rotating rods 6 are rotated along the pulling column 5, so that the four clamping plates 4 slide in the guide groove 14 respectively, so that the outer surface of the rubber gasket 7 clamps the inner wall of the workpiece, this structure is simple, and the operation is convenient, which improves the clamping efficiency of the workpiece.

[0023] like Figure 1 , Figure 2 and Figure 4As shown, a through groove 13 is penetrated on one side of the workbench 1, and the inner wall of the through groove 13 is rotatably connected with a special-shaped rod 8, a sliding column 16 is fixedly connected on one side of the pulling frame 3, and a sliding groove 17 is penetrated on one side of the special-shaped rod 8, and the outer wall of the sliding column 16 is slidably connected to the inner wall of the sliding groove 17, and a moving frame 10 is slidably connected on one side of the special-shaped rod 8. When the pulling cylinder 2 is pulled downward to pull the pulling frame 3, the sliding column 16 slides in the sliding groove 17, and one end of the special-shaped rod 8 is pressed downward to make one side of the special-shaped rod 8 rotate in the through groove 13, and the moving frame 10 slides on the limiting guide rail 12, so that the two clamping frames 19 clamp the outer surface of the workpiece, effectively improving the stability of the clamping device.

[0024] like Figure 2 and Figure 4 As shown, the upper end of the workbench 1 is fixedly connected to a limiting guide rail 12, and the outer wall of the limiting guide rail 12 is slidably connected to the inner wall of the moving frame 10. Through the structural design of the limiting guide rail 12, the moving frame 10 can be limited to prevent the sliding position of the moving frame 10 from being misaligned due to long-term use.

[0025] like Figure 2 and Figure 4 As shown, the inner wall of the mobile frame 10 is slidably connected with a clamping frame 19, and one side of the clamping frame 19 is fixedly connected with a return spring 18. One end of the return spring 18 is fixedly connected to the inner wall of the mobile frame 10. When the clamping frame 19 contacts the workpiece, one side of the clamping frame 19 slides in the mobile frame 10 to squeeze the return spring 18. The reaction force of the return spring 18 pushes the clamping frame 19 outward, thereby improving the clamping stability of the clamping frame 19.

[0026] like Figure 3 and Figure 4 As shown, the other sides of the multiple clamping plates 4 are fixedly connected with reinforcing ribs 15, and the lower ends of the multiple reinforcing ribs 15 are slidably connected to the upper end of the workbench 1. The reinforcing ribs 15 can support the clamping plates 4 to improve the service life of the clamping plates 4.

[0027] like Figure 3 and Figure 4 As shown, one end of each of the multiple clamping plates 4 is fixedly connected to a sliding rod 20, and a plurality of guide grooves 14 are penetrated through the upper end of the workbench 1. The outer walls of the multiple sliding rods 20 are respectively slidably connected to the inner walls of the multiple guide grooves 14, and the clamping plates 4 are guided by the structural design of the guide grooves 14.

[0028] like Figure 1 As shown, two guide frames 11 are fixedly connected to the upper end of the base 9, and one side of the two guide frames 11 is slidably connected to the two sides of the pulling frame 3 respectively, and the sliding direction of the pulling frame 3 is limited by the guide frames 11.

[0029] The utility model provides a clamping device for aviation aluminum alloy curved surface workpieces, and the specific working principle is as follows:

[0030] When clamping the aviation aluminum alloy curved workpiece, first place the workpiece in the middle position of the workbench 1, turn on the pulling cylinder 2, pull the pulling column 5 downward, and the four rotating rods 6 rotate along the pulling column 5, so that the four clamping plates 4 slide in the guide groove 14 respectively, and the outer surface of the rubber gasket 7 clamps the inner wall of the workpiece. While the pulling cylinder 2 pulls the pulling frame 3 downward, the sliding column 16 slides in the sliding groove 17, and one end of the special-shaped rod 8 is pressed downward, so that one side of the special-shaped rod 8 rotates in the through groove 13, and the moving frame 10 slides on the limiting guide rail 12. When the clamping frame 19 contacts the workpiece, one side of the clamping frame 19 slides in the moving frame 10 to squeeze the reset spring 18. The reaction force of the reset spring 18 pushes the clamping frame 19 outward, and the two clamping frames 19 clamp the outer surface of the workpiece, thereby completing the clamping of the workpiece.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An aviation aluminum alloy curved workpiece clamping device, comprising a workbench (1), characterized in that: A pulling column (5) is slidably connected to the middle of the workbench (1), and a plurality of rotating rods (6) are rotatably connected to the outer wall of the pulling column (5), one end of each of the plurality of rotating rods (6) is rotatably connected to a clamping plate (4), and one side of each of the plurality of clamping plates (4) is fixedly connected to a rubber gasket (7), the lower end of the workbench (1) is fixedly connected to a base (9), a pulling cylinder (2) is fixedly installed in the middle of the inner part of the base (9), the output end of the pulling cylinder (2) is fixedly connected to a pulling frame (3), and the middle of the upper end of the pulling frame (3) is fixedly connected to one end of the pulling column (5).

2. The device for clamping an aviation aluminum alloy curved workpiece according to claim 1, characterized in that: A through groove (13) is formed through one side of the workbench (1), and a shaped rod (8) is rotatably connected to the inner wall of the through groove (13). A sliding column (16) is fixedly connected to one side of the pulling frame (3). A sliding groove (17) is formed through one side of the shaped rod (8), and the outer wall of the sliding column (16) is slidably connected to the inner wall of the sliding groove (17). A moving frame (10) is slidably connected to one side of the shaped rod (8).

3. The device for clamping an aviation aluminum alloy curved workpiece according to claim 2, characterized in that: The upper end of the workbench (1) is fixedly connected to a limit guide rail (12), and the outer side wall of the limit guide rail (12) is slidably connected to the inner wall of the movable frame (10).

4. The device for clamping an aviation aluminum alloy curved workpiece according to claim 2, characterized in that: The inner wall of the movable frame (10) is slidably connected to a clamping frame (19), one side of the clamping frame (19) is fixedly connected to a return spring (18), and one end of the return spring (18) is fixedly connected to the inner wall of the movable frame (10).

5. The device for clamping an aviation aluminum alloy curved workpiece according to claim 1, characterized in that: The other sides of the plurality of clamping plates (4) are all fixedly connected with reinforcing ribs (15), and the lower ends of the plurality of reinforcing ribs (15) are all slidably connected to the upper end of the workbench (1).

6. The device for clamping an aviation aluminum alloy curved workpiece according to claim 1, characterized in that: One end of each of the plurality of clamping plates (4) is fixedly connected to a sliding rod (20); a plurality of guide grooves (14) are provided through the upper end of the workbench (1); and the outer walls of the plurality of sliding rods (20) are slidably connected to the inner walls of the plurality of guide grooves (14) respectively.

7. The device for clamping an aviation aluminum alloy curved workpiece according to claim 1, characterized in that: Two guide frames (11) are fixedly connected to the upper end of the base (9), and one side of the two guide frames (11) is slidably connected to two sides of the pulling frame (3) respectively.

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