A closed area skin joint gap scribing aid

Abstract

This utility model relates to an auxiliary tool for marking seam gaps in closed-area skin panels, comprising a positioning component, a clamping marking component, and an operating handle. The clamping marking component is arranged parallel to the positioning component, with the lower rear part of the clamping marking component fixed to the lower front part of the positioning component. The operating handle is fixedly installed on the front side of the clamping marking component. The back of the positioning base plate of this utility model is attached to the outer surface of the front ring skin, and the bottom surface of the positioning plate hooks onto the edge of the front ring skin. The excess skin material passes through the gap between the positioning base plate and the marking plate. The rear side of the marking plate abuts against the surface of the excess skin material. By holding the operating handle and pulling this utility model along the edge of the front ring skin, the marking plate leaves marking marks as it moves on the excess skin material. The utility model and the excess skin material are then removed, and the excess skin material is trimmed according to the marking lines. This utility model has a simple structure, saves costs, and improves work efficiency.

Description

Technical Field

[0001] This utility model relates to an auxiliary tool for marking the seam gaps of a closed area skin, belonging to the field of aircraft manufacturing and processing technology. Background Technology

[0002] When assembling components such as the nacelle, main landing fairing, and dorsal fin of the AG600 large amphibious firefighting aircraft, the assembly of the nacelle's forward ring is complex and time-consuming. The forward ring consists of bulkheads, angle brackets, 3-frame, 11-frame, and a sliding vent cover. Since the forward ring skin forms a closed area after installation, and the sliding vent cover is an independent part of the forward ring, the fixed part of the forward ring skin is already in place when installing the sliding vent cover skin, forming a closed area. Due to tolerances in assembly and parts manufacturing, and because the forward ring structure is annular while the outer skin is arc-shaped, the sliding vent cover skin has a margin of safety. According to GF... The technical requirements for the assembly and acceptance of the engine nacelle of the D5400K100C1 large firefighting / water rescue amphibious aircraft (Version L) stipulate that the seam tolerance between the front ring air intake skin (including the leading edge skin) and the skid air intake skin of the nacelle should be 0-1.5mm. Since the front ring skin is already installed and forms a closed area, during assembly, the excess of the skid air intake cover skin overlaps outside the front ring skin, covering the seam of the front ring skin. To ensure the seam tolerance requirements, the traditional method involves placing the slip-on cover skin over the front ring at each position, measuring with a steel ruler, recording the data, and then marking the position lines of the front ring skin onto the slip-on cover skin with a pencil. The slip-on cover skin is then removed and filed down. This process is cumbersome, time-consuming, labor-intensive, and inefficient. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an auxiliary tool for marking the seam gap between the sliding cover skin and the front ring skin in a closed area, so as to achieve accurate alignment and successful marking in one go.

[0004] The present invention adopts the following technical solution:

[0005] This utility model relates to an auxiliary tool for marking seam gaps in closed areas of skin, comprising a positioning component, a clamping marking component, and an operating handle; the clamping marking component is arranged parallel to the positioning component, the lower rear part of the clamping marking component is fixed to the lower front part of the positioning component, and the operating handle is fixedly installed on the front side of the clamping marking component.

[0006] The positioning component of this utility model includes a positioning base plate and a positioning plate that is horizontally and vertically fixedly installed on the rear side of the top of the positioning base plate. The lower rear part of the clamping marking component is fixed to the lower front part of the positioning base plate. The thickness of the positioning plate is 0.5-1mm.

[0007] This utility model's clamping and marking assembly includes a clamping base plate and a marking plate that is horizontally and vertically fixedly installed on the rear side of the top of the clamping base plate. The thickness of the marking plate is 0.5-1mm. A positioning plate is parallel to the marking plate, and the top surfaces of the positioning plate and the marking plate are coplanar, as are the bottom surfaces of the positioning plate and the marking plate. The gap between the rear side of the marking plate and the front side of the positioning base plate is 0.8-2mm. The operating handle is fixedly installed on the front side of the marking plate.

[0008] The operating handle of this utility model is plate-shaped and is vertically fixed on the front side of the marking board.

[0009] The gap between the rear side of the marking plate and the front side of the positioning base plate of this utility model is 1.5mm.

[0010] The positive effects of this utility model are as follows: The back of the positioning plate of this utility model is attached to the outer surface of the front ring skin, and the bottom surface of the positioning plate hooks onto the edge of the front ring skin. That is, with the positioning plate as the reference, the excess of the sliding skin passes through the gap between the positioning plate and the scribing plate. The rear side of the scribing plate abuts against the surface of the sliding skin. By holding the operating handle and pulling this utility model around the edge of the front ring skin, since the positioning plate and the scribing plate are parallel, the scribing plate leaves scribing marks as it moves on the excess sliding skin. The utility model and the sliding skin are then removed, and the sliding skin is trimmed according to the scribing lines. The interval time for each skin trimming is 2 minutes. Compared with the previous improvement where the interval time for each trial skin trimming was at least 30 minutes, the trimming time for each skin is reduced by at least 28 minutes, and the efficiency is improved by 93.3%. This utility model has a simple structure, saves costs, and improves work efficiency at the same time. Attached Figure Description

[0011] Appendix Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Appendix Figure 2 This is a side view of the structure of this utility model;

[0013] Appendix Figure 3 This is a top view of the structure of this utility model. Detailed Implementation

[0014] The following is in conjunction with the appendix Figure 1-3 The present invention will be described in detail. In the description of the present invention, the position of the positioning plate 2 is considered as the rear, and the position of the operating handle 5 is considered as the front.

[0015] As attached Figure 1 , 2As shown, the auxiliary tool for marking seam gaps in closed area skin of this utility model includes a positioning component, a clamping marking component, and an operating handle 5; the clamping marking component is arranged parallel to the positioning component, the lower rear part of the clamping marking component is fixed to the lower front part of the positioning component, and the operating handle 5 is fixedly installed on the front side of the clamping marking component.

[0016] As attached Figure 2 As shown, the positioning assembly of this utility model includes a positioning base plate 1 and a positioning plate 2 that is horizontally and vertically fixedly installed on the rear side of the top of the positioning base plate 1. The lower rear part of the clamping scribing assembly is fixed to the lower front part of the positioning base plate 1. The thickness of the positioning plate 2 is 0.5-1mm. The clamping scribing assembly includes a clamping base plate 3 and a scribing plate 4 that is horizontally and vertically fixedly installed on the rear side of the top of the clamping base plate 3. The lower rear part of the clamping base plate 3 is fixed to the lower front part of the positioning base plate 1. In this embodiment, rivets are used for fixing. The thickness of the scribing plate 4 is 0.5-1mm. The positioning plate 2 and the scribing plate 4 are parallel, and the top surfaces of the positioning plate 2 and the scribing plate 4 are coplanar and coplanar.

[0017] The gap between the rear side of the scribing plate 4 and the front side of the positioning base plate 1 is 0.8-2mm, and the optimal gap in this embodiment is 1.5mm. The gap between the rear side of the scribing plate 4 and the front side of the positioning base plate 1, and the gap between the upper rear side of the scribing assembly and the upper front side of the positioning base plate 1, are to allow for the allowance of the skin thickness so that it can pass through in the middle for easy scribing. The operating handle 5 is fixedly installed on the front side of the scribing plate 4.

[0018] As attached Figure 2 , 3 As shown, the operating handle 5 of this utility model is plate-shaped and is vertically fixed on the front side of the marking plate 4 for easy hand operation.

[0019] The back of the positioning plate 1 of this utility model is attached to the outer surface of the front ring skin, and the bottom surface of the positioning plate 2 hooks onto the edge of the front ring skin. That is, with the positioning plate 2 as the reference, the excess of the loose skin passes through the gap between the positioning plate 1 and the scribing plate 4. The rear side of the scribing plate 4 abuts against the surface of the loose skin. By holding the operating handle and pulling this utility model around the edge of the front ring skin, since the positioning plate 2 and the scribing plate 4 are parallel, the scribing plate 4 leaves scribing marks as it moves on the loose skin with excess. The utility model and the loose skin are then removed, and the loose skin is trimmed according to the scribing lines. Each skin repair takes 2 minutes, which is at least 30 minutes compared to the previous method of at least 30 minutes for each trial skin repair. The repair time for each skin is reduced by at least 28 minutes, and the efficiency is increased by 93.3%. This utility model is suitable for repairing the gap between two layers of skin, and is applicable to skin thickness ≤1.5mm. This utility model is simple to manufacture, saves costs, and improves work efficiency.

Claims

1. A tool for marking a seam gap between adjacent panels of a skin for an enclosed area, the tool comprising: It includes a positioning component, a clamping scribing component, and an operating handle (5); The clamping scribing assembly and the positioning assembly are arranged in parallel. The lower rear part of the clamping scribing assembly is fixed to the lower front part of the positioning assembly. The operating handle (5) is fixedly installed on the front side of the clamping scribing assembly.

2. A tool for marking a seam line between adjacent panels of a skin for an enclosed area as defined in claim 1, wherein, The positioning assembly includes a positioning base plate (1) and a positioning plate (2) that is horizontally and vertically fixedly installed on the rear side of the top of the positioning base plate (1). The lower rear part of the clamping marking assembly is fixed to the lower front part of the positioning base plate (1), and the thickness of the positioning plate (2) is 0.5-1mm.

3. A tool for marking a seam line between adjacent panels of a closure area skin according to claim 2, wherein, The clamping and marking assembly includes a clamping base plate (3) and a marking plate (4) that is horizontally and vertically fixedly installed on the rear side of the top of the clamping base plate (3). The thickness of the marking plate (4) is 0.5-1mm. The positioning plate (2) is parallel to the scribing plate (4), the top surfaces of the positioning plate (2) and the scribing plate (4) are coplanar, and the bottom surfaces of the positioning plate (2) and the scribing plate (4) are coplanar. The gap between the rear side of the scribing plate (4) and the front side of the positioning base plate (1) is 0.8-2mm; The operating handle (5) is fixedly installed on the front side of the scribing plate (4).

4. A tool for marking a seam line between adjacent panels of a closure area skin according to claim 3, wherein, The operating handle (5) is plate-shaped and is vertically fixed in front of the scribing plate (4).

5. A tool for marking a seam line between adjacent panels of a closure area skin according to claim 3, wherein, The gap between the rear side of the scribing plate (4) and the front side of the positioning base plate (1) is 1.5mm.

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