A honeycomb sandwich curved surface structure damage removal auxiliary positioning tool

Abstract

The application relates to a honeycomb sandwich curved surface structure damage removal auxiliary positioning tool which comprises an adjustable hole position support plate, adjustable height support legs, a rocking handle, a locking nut, a screw and a mounting bracket; the core function of the application is to assist in positioning a straight type angle grinder when the honeycomb sandwich curved surface structure damage is removed. The adjustable hole position support plate is the base of the whole device, is provided with a threaded hole in the middle, is used for connecting a polishing height adjusting rocking handle, can further realize accurate control of the polishing height by combining a polishing height lifting height ruler, rocking the rocking handle to a specified height, locking the polishing height locking nut, and reserving mounting hole positions of the adjustable height support legs on four edges of the adjustable hole position support plate. In cooperation with the height adjusting structure of the support legs and the rubber suction disc at the bottom, the adjustable height support legs can be accurately positioned at different damage positions of the curved surface structure, and can stably support during polishing.

Description

Technical Field

[0001] This invention relates to the field of aerospace composite material repair technology, specifically to an auxiliary positioning tool for removing damage to honeycomb sandwich curved surface structures. Background Technology

[0002] Modern aircraft radar radomes, wings, and other components are typically curved sandwich structures composed of fiberglass skin and honeycomb core. In service or combat environments, these curved structures may suffer damage such as cracks, dents, and holes caused by accidental environmental damage or enemy attacks, leading to degradation or even loss of their mechanical and electromagnetic properties. Rapid repair of this damage is crucial for restoring aircraft performance and enabling continued mission execution. Damage such as lightning strikes, holes, and dents requires patching and excavation repair of the composite sandwich structure. This process involves removing material from the original damaged area layer by layer according to the excavation angle. If the area being ground too large or the thickness exceeding the thickness of a single layer during the removal of material from the damaged area, over-repair will occur, directly affecting the quality of the structural repair and its post-repair performance. Therefore, to improve repair quality and efficiency, it is essential to quickly and precisely control the area and thickness of the material being ground during damage removal.

[0003] Traditional composite material structure damage removal techniques rely on manual positioning by operators, and the grinding thickness depends entirely on the operator's experience in using the angle grinder. Positioning is time-consuming and it is difficult to guarantee repair quality. High-end laser removal technology requires large equipment, which is difficult to meet the requirements of rapid repair in the field. Furthermore, laser removal is currently mostly for planar structures, and it is difficult to achieve precise control of the removal thickness for complex curved surfaces. Summary of the Invention

[0004] Purpose of the invention To achieve damage removal in honeycomb sandwich curved surface structures, traditional damage grinding and removal methods are time-consuming and rely entirely on operator experience. Laser removal equipment is also large and difficult to precisely control the thickness of damage removal in complex curved surface structures, which is not conducive to the rapid and accurate repair of honeycomb sandwich curved surface structures.

[0005] The aim is to provide an auxiliary positioning tool for removing damage to honeycomb sandwich curved surface structures, which can simultaneously meet the needs of rapid and accurate positioning of the damage removal area and precise control of the damage removal thickness.

[0006] Technical solution A tool for removing damage to a honeycomb sandwich curved surface structure is provided, comprising an adjustable hole support plate 1, an adjustable height support leg 2, a crank handle 3, a locking nut 4, screws, and a mounting bracket 6. The adjustable hole support plate 1 has a threaded through hole in its center. The crank handle 3 has a vertical threaded rod, which is threaded into the threaded through hole. Rotating the crank handle allows it to move vertically. Two locking nuts are threaded into the threaded rod and are located on both sides of the adjustable hole support plate 1. The mounting bracket is axially fixed to the lower end of the vertical threaded rod and is used to mount the damage removal tool. The upper end of the support leg 2 has a threaded hole, and the adjustable hole support plate 1 has multiple mounting through holes. The upper end of the support leg 2 can be detachably fixed to the adjustable hole support plate 1 through screws and mounting through holes. The adjustable hole support plate 1 is a telescopic adjustable support leg. Multiple support legs can match any curved surface to achieve the positioning of the adjustable hole support plate 1, ensuring that the central axis of the damage removal tool is consistent with the normal direction of the damaged surface of the curved surface.

[0007] Furthermore, it also includes a lifting height gauge 5, which can indicate the axial position of the vertical threaded rod.

[0008] Furthermore, the adjustable support leg is positioned by a positioning hole and a positioning pin to achieve adjustment.

[0009] Furthermore, the lower end of the adjustable support leg has a flexible pad. Even further, the flexible pad is made of rubber or silicone.

[0010] Furthermore, the multiple mounting holes are arranged in a rectangular pattern.

[0011] Furthermore, multiple mounting through holes are distributed along the edge of the adjustable hole support plate 1.

[0012] Furthermore, the rear end of the crank handle 3 is an L-shaped bend.

[0013] Furthermore, the mounting bracket is compatible with the angle grinder.

[0014] The core function of this invention is to assist in positioning a straight angle grinder during the removal of damage to a honeycomb sandwich curved surface structure. The working state is illustrated in the diagram below. Figure 2 As shown. The adjustable hole support plate serves as the base of the entire device. It has a threaded hole in the center for connecting the grinding height adjustment handle. It can also be used in conjunction with a grinding height adjustment ruler to crank the handle to the desired height, and then the grinding height locking nut can be tightened for further precise control of the grinding height. All four sides of the adjustable hole support plate have pre-drilled holes for adjustable height support legs. Combined with the height adjustment structure of the support legs and the rubber suction cup at the bottom, it can accurately position different damage locations on curved surfaces and provide stable support during grinding.

[0015] Technical effect 1. The tool's support leg position is adjustable with multiple holes, the support leg height is adjustable, and the bottom of the support leg has a rubber suction cup structure, which can realize the positioning of the auxiliary positioning tool at any damaged location on complex curved surfaces such as the leading edge of the wing.

[0016] 2. This tool is equipped with a grinding height adjustment handle. By turning the handle and using the grinding height adjustment gauge, the grinding thickness of the auxiliary positioning tool can be controlled at any damaged location on a complex curved surface structure. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram illustrating the operation of the present invention; Figure 3 This is a front view of the adjustable hole support plate; Figure 4 This is a side view of the present invention; The components include: 1. Adjustable hole support plate; 2. Adjustable height support leg; 3. Crank handle; 4. Locking nut; 5. Height gauge; 6. Mounting bracket. Detailed Implementation

[0018] The disclosed examples will be described more fully with reference to the accompanying drawings, in which some (but not all) of the disclosed examples are shown. In fact, many different examples may be described, and these examples should not be construed as limited to those set forth herein. Rather, these examples are described so that this disclosure will be thorough and complete, and will fully convey the scope of this disclosure to those skilled in the art.

[0019] A tool for removing damage to a honeycomb sandwich curved surface structure is provided, comprising an adjustable hole support plate 1, an adjustable height support leg 2, a crank handle 3, a locking nut 4, screws, and a mounting bracket 6. The adjustable hole support plate 1 has a threaded through hole in its center. The crank handle 3 has a vertical threaded rod, which is threaded into the threaded through hole. Rotating the crank handle allows it to move vertically. Two locking nuts are threaded into the threaded rod and are located on both sides of the adjustable hole support plate 1. The mounting bracket is axially fixed to the lower end of the vertical threaded rod and is used to mount the damage removal tool. The upper end of the support leg 2 has a threaded hole, and the adjustable hole support plate 1 has multiple mounting through holes. The upper end of the support leg 2 can be detachably fixed to the adjustable hole support plate 1 through screws and mounting through holes. The adjustable hole support plate 1 is a telescopic adjustable support leg. Multiple support legs can match any curved surface to achieve the positioning of the adjustable hole support plate 1, ensuring that the central axis of the damage removal tool is consistent with the normal direction of the damaged surface of the curved surface.

[0020] It also includes a height gauge 5, which can indicate the axial position of the vertical threaded rod.

[0021] The adjustable support leg is positioned by a positioning hole and a positioning pin to achieve adjustment.

[0022] The adjustable support leg has a flexible pad at its lower end. The flexible pad is made of rubber or silicone.

[0023] Multiple mounting holes are arranged in a rectangular pattern.

[0024] Multiple mounting through holes are distributed on the edge of the adjustable hole support plate 1.

[0025] The rear end of the crank handle 3 is an L-shaped bend.

[0026] The mounting bracket is compatible with angle grinders.

[0027] Descriptions of various advantageous arrangements have been shown for illustrative and descriptive purposes, but such descriptions are not intended to be exclusive or limited to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. Furthermore, different advantageous examples may describe different advantages compared to other advantageous examples. One or more examples have been selected and described in order to best illustrate the principles and practical application of the examples, and to enable those skilled in the art to understand that this disclosure contains various examples with various modifications suitable for the particular intended use.

Claims

1. An auxiliary positioning tool for removing damage to a honeycomb sandwich curved surface structure, characterized in that: Includes an adjustable hole support plate (1), an adjustable height support leg (2), a crank (3), a locking nut (4), screws, and a mounting bracket (6); The adjustable hole support plate (1) has a threaded through hole in the center. The crank handle (3) has a vertical threaded rod. The threaded rod of the crank handle is threadedly engaged with the threaded through hole. Rotating the crank handle can make the crank handle move vertically. Two locking nuts are threadedly engaged with the threaded rod, and the two locking nuts are located on both sides of the adjustable hole support plate (1). The mounting bracket is axially fixedly connected to the lower end of the vertical threaded rod. The mounting bracket is used to install the damage removal tool. The adjustable height support leg has a threaded hole at its upper end, and the adjustable hole support plate has multiple mounting through holes. The upper end of the adjustable height support leg can be detachably fixed to the adjustable hole support plate through screws and mounting through holes. The adjustable height support leg is a telescopic adjustable support leg. Multiple adjustable height support legs can match any curved surface to achieve the positioning of the adjustable hole support plate, ensuring that the central axis of the damage removal tool is consistent with the normal direction of the damaged surface of the curved surface. It also includes a lifting height gauge (5), which can indicate the axial position of the vertical threaded rod; The adjustable height support leg is positioned by a positioning hole and a positioning pin to achieve adjustment; the lower end of the adjustable height support leg has a flexible pad.

2. The auxiliary positioning tool for removing damage to a honeycomb sandwich curved surface structure according to claim 1, characterized in that: Multiple mounting holes are arranged in a rectangular pattern.

3. The auxiliary positioning tool for removing damage to a honeycomb sandwich curved surface structure according to claim 1, characterized in that: Multiple mounting through holes are distributed along the edge of the adjustable hole support plate.

4. The auxiliary positioning tool for removing damage to a honeycomb sandwich curved surface structure according to claim 1, characterized in that: The rear end of the crank handle is an L-shaped bend.

5. The auxiliary positioning tool for removing damage to a honeycomb sandwich curved surface structure according to claim 1, characterized in that: The mounting bracket is compatible with angle grinders.

6. The auxiliary positioning tool for removing damage to a honeycomb sandwich curved surface structure according to claim 1, characterized in that: The flexible pad is made of rubber or silicone.

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