High-strength aluminum alloy control surface laser welding tool

Abstract

The utility model provides a high-strength aluminum alloy control surface laser welding tool. The high-strength aluminum alloy control surface laser welding tool comprises a supporting device and a pressing device. The supporting device and the pressing device are independently installed on the bottom plate, a positioning plate and a fixing plate are installed on the two adjacent sides of the supporting device respectively, the pressing device comprises a quick clamp, the quick clamp is movably installed on a magnetic base, and a pressing head assembly is installed on the quick clamp. The aluminum alloy control surface framework can be accurately positioned, the repeated positioning accuracy of the aluminum alloy control surface framework is guaranteed, meanwhile, multi-point-position clamping of an aluminum alloy skin on the framework can be achieved in combination with the movable clamping device and the pressing plate, and the clamping quality of the aluminum alloy skin is guaranteed.

Description

Technical Field

[0001] The utility model relates to a high-strength aluminum alloy rudder surface laser welding tool. Background Art

[0002] High-strength aluminum alloy rudders are important components in aerospace vehicles, mainly composed of aluminum alloy frames and skins. The welding of rudders is done by laser welding, but due to the limitations of laser spots and the extremely high precision of the assembly of the rudder skin and frame, and the large thermal expansion coefficient of aluminum alloy materials, stress is easily generated during welding, which brings great challenges to the welding work. At present, a fixed single-point clamping device is used to clamp the rudder during welding, but it cannot meet the rapid movement of the clamping position during rudder welding, and the single-point clamping is also easy to damage the contour of the rudder surface; and the single-point assembly gap is too large, resulting in defects such as weld leakage, undercut, and welding cracks in the weld, which seriously affects the welding quality of high-strength aluminum alloys; some laser welding fixtures usually use a symmetrical layout method to buckle the mold on the entire bottom plate, place the rudder frame and rudder skin in it, and clamp it by applying a fixed pressure plate on the skin surface by bolts, but this method has poor clamping effect and operation flexibility, which brings challenges to welding work. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a high-strength aluminum alloy rudder surface laser welding tool.

[0004] The utility model is realized through the following technical solutions.

[0005] The utility model provides a high-strength aluminum alloy rudder surface laser welding device, comprising a supporting device and a clamping device; the supporting device and the clamping device are independently installed on a base plate, and a positioning plate and a fixing plate are installed on two adjacent sides of the supporting device respectively; the clamping device comprises a quick clamp, which is movably installed on a magnetic seat, and a clamping head assembly is installed on the quick clamp.

[0006] The supporting device comprises a supporting plate and a rudder plate, wherein the rudder plate is fixed on the supporting plate, and an upper end surface of the rudder plate is processed with a groove matching the bottom of the rudder surface.

[0007] The fixing plate is processed with a plurality of threaded holes, positioning bolts are installed in the threaded holes, and positioning gaskets are fixed to the ends of the rods of the positioning bolts.

[0008] The clamping head assembly includes a long pressure rod and a short pressure rod. The head end of the long pressure rod is installed on the quick clamp. The middle part of the long pressure rod is threadedly installed with an adapter plate. Two short pressure rods are threadedly installed at both ends of the adapter plate. The lower ends of the long pressure rod and the short pressure rod are both installed with hemispherical pressure heads.

[0009] A strip-shaped hole is processed on the pressure arm of the quick clamp, and the head end of the long pressure rod is fixed in the strip-shaped hole in cooperation with a nut.

[0010] The base of the quick clamp is fixed on the bearing platform, the lower end of the bearing platform is installed in the bearing seat and a bearing is installed between the bearing seat, and the bearing seat is fixed on the magnetic seat.

[0011] It also includes a pressing plate, the shape of which is made according to the shape of the rudder surface, a long hole is processed at the center of the pressing plate, and the pressing plate is arranged between the rudder surface and the clamping device.

[0012] The beneficial effects of the utility model are: the aluminum alloy rudder surface frame can be accurately positioned to ensure its repeated positioning accuracy; at the same time, the movable clamping device and the pressure plate can be combined to realize multi-point clamping of the aluminum alloy skin on the frame to ensure its clamping quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 A schematic diagram of the structure of the clamping device of the utility model;

[0015] In the figure: 1-base plate, 2-support plate, 3-rudder plate, 4-positioning plate, 5-fixing plate, 6-positioning bolt, 7-positioning gasket, 8-pressure plate, 9-magnetic seat, 10-shim plate, 11-bearing seat, 12-bearing table, 13-long pressure rod, 14-short pressure rod, 15-adapter plate, 16-pressure sheet, 17-quick clamp. DETAILED DESCRIPTION

[0016] The technical solution of the utility model is further described below, but the scope of protection required is not limited to the description.

[0017] A high-strength aluminum alloy rudder laser welding device includes a supporting device and a clamping device; the supporting device and the clamping device are independently installed on a base plate 1, the base plate 1 is a 20 mm thick iron plate, and the chamfers and hoisting holes are machined on all sides. A positioning plate 4 and a fixing plate 5 are installed on the adjacent two sides of the supporting device, respectively. The clamping device includes a quick clamp 17, which is movably installed on a magnetic seat 9, and a clamping head assembly is installed on the quick clamp 17. A multi-site laser is used to generate a high-brightness, monochromatic and highly directional laser beam to heat the high-strength aluminum alloy rudder, melt it, and diffuse it into the material through the heat conduction effect to form a local high-temperature molten pool. At the same time, by accurately controlling the irradiation time and energy distribution of the laser, high-quality connection between different materials is achieved to form a firm weld.

[0018] Furthermore, the supporting device includes a support plate 2 and a rudder plate 3, wherein the rudder plate 3 is fixed on the support plate 2, and the upper end surface of the rudder plate 3 is processed with a groove matching the bottom of the rudder surface; its main function is to increase the heat dissipation capacity of the tooling while reducing the use of copper material, so that the rudder plate can be at a height suitable for the clamping range. The sizes of the support plate 2 and the rudder plate 3 are determined according to the size of the rudder surface. At the same time, according to the actual application and operation conditions of the phenomenon, the symmetrical structure of the support plate 2 and the rudder plate 3 is arranged and distributed on the base plate 1 to meet the needs of symmetrical welding in the process.

[0019] The rudder plate 3 is made of copper material, which has the advantages of good processing performance and strong heat dissipation capacity. The overall structure is obtained by buckling the mold according to the external shape of the rudder surface. At the same time, a groove is added at the weld position to reserve the weld height space, which ensures the fit between the rudder plate 3 and the rudder surface; a positioning boss is reserved on the side where the rudder plate 3 intersects with the positioning plate to ensure the reliability of the positioning reference;

[0020] The positioning plate 4 is made of aluminum alloy through machining and is fixed to the support plate 2 and the rudder plate 3 by fastening screws to form a single-sided positioning reference. Combined with the positioning platform with the edge protrusion on the angle rudder plate, a cross positioning reference is formed, which improves the accuracy of repeated positioning. Combined with the pre-tightening force applied by the positioning bolts 6 and the positioning gaskets 7 on the fixing plate 5, it can meet the needs of fast, high-precision and repeated positioning of the high-strength aluminum alloy rudder surface, ensuring the smooth progress of the laser welding of the rudder surface.

[0021] The fixing plate 5 is processed with a plurality of threaded holes, in which positioning bolts 6 are installed, and a positioning gasket 7 is fixed to the end of the rod of the positioning bolt 6.

[0022] Furthermore, the clamping head assembly includes a long pressure rod 13 and a short pressure rod 14, the head end of the long pressure rod 13 is installed on a quick clamp 17, the middle part of the long pressure rod 13 is threadedly installed with an adapter plate 15, and two short pressure rods 14 are threadedly installed at both ends of the adapter plate 15, and the lower ends of the long pressure rod 13 and the short pressure rod 14 are both installed with hemispherical rubber pressure heads. The different heights of the long pressure rod 13 are adjusted by adjusting the upper and lower nuts of the pressure plate 16, and the adapter plate 15 is threadedly connected to the short pressure rods 14 on both sides, so that the height of the short pressure rods 14 on both sides can be adjusted, and the clamping position can be quickly adjusted in combination with the clamping force applied by the quick clamp 17. By adjusting the height of the long pressure rod 13 and the short pressure rod 14, the position of the quick clamp 17 applies clamping force at the two sides of the pressure plate 8, so as to realize the rapid clamping of different weld positions of the high-strength aluminum alloy rudder skin.

[0023] The adapter plate 15 is made of 4mm thick steel plate and has three M6 threaded holes reserved. Short pressure rods 14 are installed on both sides of the outer ends and the long pressure rod 13 is installed in the middle position. The structure of the long pressure rod 13 and the short pressure rod 14 is a rubber head at the lower end and a screw at the upper end. The height of the clamping head can be adjusted through the thread on the adapter plate 15 to achieve height adjustment.

[0024] A strip-shaped hole is processed on the pressing arm of the quick clamp 17, and the head end of the long pressing rod 13 is fixed in the strip-shaped hole in cooperation with a nut.

[0025] The base of the quick clamp 17 is fixed on the bearing platform 12 . The lower end of the bearing platform 12 is installed in the bearing seat 11 and a bearing is installed between the bearing seat 11 . The bearing seat 11 is fixed on the magnetic seat 9 .

[0026] Furthermore, it also includes a pressing plate 8, the shape of which is made according to the shape of the rudder surface, and a long hole is processed in the center of the pressing plate 8. The pressing plate 8 is arranged between the rudder surface and the clamping device; the pressing plate 8 is made of a 3mm steel plate with an 8mm groove in the center, and then is formed by die bending to ensure that the shape is consistent with the shape of the rudder surface. Different pressing plates 8 can be made according to different positions to ensure that the pressing plate 8 can be close to the weld of the rudder surface. During the clamping process, the point pressure applied by the clamping device is converted into surface pressure and evenly distributed on the skin surface to avoid the problem of pits in the skin and increased assembly gaps due to excessive clamping force at local positions.

Claims

1. A high-strength aluminum alloy rudder surface laser welding tool, including a supporting device and a clamping device, characterized in that: The supporting device and the clamping device are independently mounted on the base plate (1), and a positioning plate (4) and a fixing plate (5) are mounted on two adjacent sides of the supporting device, respectively. The clamping device comprises a quick clamp (17), and the quick clamp (17) is movably mounted on a magnetic seat (9). A clamping head assembly is mounted on the quick clamp (17).

2. The high-strength aluminum alloy rudder surface laser welding tool as claimed in claim 1, characterized in that: The supporting device comprises a supporting plate (2) and a rudder plate (3); the rudder plate (3) is fixed on the supporting plate (2); and the upper end surface of the rudder plate (3) is processed with a groove matching the bottom of the rudder surface.

3. The high-strength aluminum alloy rudder surface laser welding tool as claimed in claim 1, characterized in that: The fixing plate (5) is machined with a plurality of threaded holes, positioning bolts (6) are installed in the threaded holes, and a positioning gasket (7) is fixed to the end of the rod of the positioning bolt (6).

4. The high-strength aluminum alloy rudder surface laser welding tool as claimed in claim 1, characterized in that: The clamping head assembly comprises a long clamping rod (13) and a short clamping rod (14); the head end of the long clamping rod (13) is mounted on a quick clamp (17); a transfer plate (15) is threadedly mounted on the middle of the long clamping rod (13); two short clamping rods (14) are threadedly mounted on both ends of the transfer plate (15); and the lower ends of the long clamping rod (13) and the short clamping rod (14) are both mounted with hemispherical pressure heads.

5. The high-strength aluminum alloy rudder surface laser welding tool as claimed in claim 4, characterized in that: A strip-shaped hole is processed on the pressure arm of the quick clamp (17), and the head end of the long pressure rod (13) is fixed in the strip-shaped hole in cooperation with a nut.

6. The high-strength aluminum alloy rudder surface laser welding tool as claimed in claim 1, characterized in that: The base of the quick clamp (17) is fixed on the bearing platform (12), the lower end of the bearing platform (12) is installed in the bearing seat (11) and a bearing is installed between the bearing seat (11), and the bearing seat (11) is fixed on the magnetic seat (9).

7. The high-strength aluminum alloy rudder surface laser welding tool as claimed in claim 1, characterized in that: It also includes a pressing plate (8), the shape of which is made according to the shape of the rudder surface, a long hole is processed at the center of the pressing plate (8), and the pressing plate (8) is arranged between the rudder surface and the clamping device.

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