CN215201951U - Multifunctional sample plate for blanking and chemical milling and carving of aircraft skin - Google Patents
Multifunctional sample plate for blanking and chemical milling and carving of aircraft skin Download PDFInfo
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- CN215201951U CN215201951U CN202120559551.7U CN202120559551U CN215201951U CN 215201951 U CN215201951 U CN 215201951U CN 202120559551 U CN202120559551 U CN 202120559551U CN 215201951 U CN215201951 U CN 215201951U
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Abstract
A multifunctional template for blanking and chemical milling and carving of an aircraft skin relates to the field of aviation maintenance process equipment and comprises a template body with the same shape as the aircraft skin, wherein a first chemical milling frame and second chemical milling frames which are arranged on the left side and the right side of the first chemical milling frame in a mirror image mode are arranged in the template body; the multifunctional sample plate further comprises a first pressing plate and a second pressing plate; the first pressing plate and the first milling frame have the same shape and can be placed in the first milling frame; the second pressing plate and the second chemical milling frame have the same shape and are placed in the second chemical milling frame; through setting up dedicated model, utilize this model to realize marking off unloading, side cut modification, trompil and the change of aircraft skin development material (blank) and mill the operation such as marking off of district's edge line and carve the shape for multinomial function fuses on one set of model in order to ensure the marking off precision, improves marking off efficiency simultaneously.
Description
Technical Field
The utility model relates to an aviation maintenance technology equipment field, especially an aircraft skin unloading and chemical milling carve shape with multi-functional model.
Background
The method comprises the steps of generally adopting a multi-position chemical milling mode to reduce the weight of an aluminum alloy skin of an aircraft part, coating a layer of protective rubber mold on the surface of the aluminum alloy skin before chemical milling of the skin, marking and carving the protective rubber mold by using a sharp blade according to the outline of a required chemical milling area, removing the protective rubber mold on the surface of the required chemical milling area of the skin, and placing the skin in a special alkaline solution for chemical milling.
At present, tools such as a steel plate ruler, a vernier caliper, a scribing compass and a tape measure are conventionally adopted for blanking and chemical milling of aircraft skin, the measuring and scribing mode can only be used for scribing regular shapes such as straight lines and standard arc lines, the positioning and scribing precision is poor, the operation is complex, and the working efficiency is low; especially for the multi-curved-surface wing-shaped skin, referring to fig. 1, the outline of the developed material (blank) is irregular, and there are many outline edges and chemical milling area edges which are irregular curves, and the conventional marking means can not meet the use requirements of such irregular complicated curve outline marking and carving.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the prior art, the utility model provides an aircraft skin unloading and chemical milling carve shape and use multi-functional model utilizes this model to merge together aircraft skin development material (blank) the marking off unloading, cut edge trim, trompil and the chemical milling district edge line draw line and carve shape multinomial function such as to be in the same place to improve the purpose of drawing line precision and improvement marking off efficiency.
The utility model provides a concrete scheme as follows:
a multifunctional template for blanking and chemical milling and carving of an aircraft skin comprises a template body with the same shape as the aircraft skin, wherein a first chemical milling frame and second chemical milling frames which are arranged on the left side and the right side of the first chemical milling frame in a mirror image mode are arranged in the template body;
the multifunctional sample plate further comprises a first pressing plate and a second pressing plate; the first pressing plate and the first milling frame have the same shape and can be placed in the first milling frame; the second pressing plate and the second chemical milling frame have the same shape and are placed in the second chemical milling frame.
Furthermore, a plurality of convex first connecting ribs are distributed on the outer wall of the first pressing plate at intervals, and the first pressing plate is fixedly connected with the sample plate body through the first connecting ribs; a first through hole is formed between every two adjacent first connecting ribs, and the first through holes form a first virtual wire frame with the same shape as the first chemical milling frame.
Furthermore, a plurality of convex second connecting ribs are distributed on the outer wall of the second pressing plate at intervals, and the second pressing plate is fixedly connected with the sample plate body through the second connecting ribs; and a second through hole is formed between every two adjacent second connecting ribs, and a second virtual wire frame with the same shape as the second milling frame is formed by the plurality of second through holes.
Furthermore, a third milling frame is further arranged on each second pressing plate, each third milling frame is a circular frame, and third connecting ribs in a cross structure are arranged in the third milling frames.
Further, the outer end edge of the sample plate body is provided with a skin allowance plate, a connecting flange is arranged on the end face of the skin allowance plate opposite to the sample plate body, and the skin allowance plate is fixed with the sample plate body through the flange; and a third through hole is formed between every two adjacent flanges, and a third virtual wire frame with the same shape as the sample plate body is formed by the plurality of third through holes.
Furthermore, at least two positioning holes are formed in the skin allowance plate and used for positioning the aircraft skin.
Further, the width of the skin allowance plate is W, wherein W is 50 mm.
Furthermore, the multifunctional sample plate is formed by cutting an integrated aluminum alloy plate through numerical control laser.
The beneficial effect that adopts this technical scheme to reach does:
by arranging a special sample plate, the operations of marking and blanking, trimming and shaping, perforating, marking and shaping of a chemical milling area edge line and the like of an aircraft skin unfolding material (blank) are realized by utilizing the sample plate, so that multiple functions are integrated on one set of sample plate; compare in traditional adoption tools such as steel plate chi, slide caliper, marking gauge and tape measure the mode of drawing a line, guarantee marking off precision that this scheme can be obvious improves marking off efficiency simultaneously.
Drawings
FIG. 1 is a diagram of a finished structure of an aircraft skin.
Fig. 2 is a plan view of the multi-purpose template according to the present invention.
Fig. 3 is an exploded view of the multi-purpose template of the present embodiment.
Wherein: the template comprises a template body 10, a first milling frame 11, a second milling frame 12, a third milling frame 13, a skin allowance plate 14, a first pressing plate 21, a second pressing plate 22, a third connecting rib 131, a flange 141, a third through hole 142, a positioning hole 143, a first connecting rib 211, a first through hole 212, a second connecting rib 221 and a second through hole 222.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
The embodiment provides a multifunctional template for blanking and chemical milling engraving of an aircraft skin, and the multifunctional template is used for realizing operations such as marking blanking, trimming and trimming, marking and engraving in a chemical milling area and the like of a skin unfolding material (blank).
Specifically, referring to fig. 2-3, the multifunctional template comprises a template body 10, wherein the template body 10 has the same shape as the aircraft skin, so that the marking and blanking operation of the skin unfolding material can be realized directly through the template body 10; a first chemical milling frame 11 and second chemical milling frames 12 which are arranged on the left side and the right side of the first chemical milling frame 11 in a mirror image mode are arranged in the sample plate body 10; the first and second milling frames 11, 12 here are mainly used for marking the milling areas on the aircraft skin.
Meanwhile, the multifunctional template further comprises a first pressing plate 21 and a second pressing plate 22; the first pressing plate 21 has the same shape as the first chemical milling frame 11 and can be placed in the first chemical milling frame 11; the second pressing plate 22 has the same shape as the second milling frame 12 and is disposed in the second milling frame 12.
When the multifunctional template is used specifically, referring to fig. 1-3, the multifunctional template is attached to the unfolding material of the aircraft skin, and the unfolding material is subjected to scribing and trimming along the shape of the template body 10, so that the aircraft skin forms a specified shape; then, coating a layer of protective adhesive film on the surface of the aircraft skin, aligning and attaching the multifunctional sample plate with the aircraft skin again, respectively placing a first pressing plate 21 and a second pressing plate 22 in a corresponding first chemical milling frame 11 and a corresponding second chemical milling frame 12, and carrying out scribing and engraving along the side line of the first chemical milling frame 11 and the second chemical milling frame 12 by using a blade to remove the protective adhesive film on the surface of a required chemical milling area on the aircraft skin; finally, the formed skin is integrally placed in a special alkaline solution for chemical milling.
The multifunctional template is used for blanking and trimming the skin unfolding material, and compared with the traditional processing mode, the template can ensure the accuracy and the line drawing efficiency of the formed airplane skin particularly for trimming the irregular curve side line.
In this embodiment, referring to fig. 2 to 3, a plurality of convex first connecting ribs 211 are distributed on the outer wall of the first pressing plate 21 at intervals, and the first pressing plate 21 is fixedly connected with the sample plate body 10 through the first connecting ribs 211; a first through hole 212 is formed between every two adjacent first connecting ribs 211, and a plurality of first through holes 212 form a first virtual wire frame with the same shape as the first milling frame 11.
Similarly, a plurality of convex second connecting ribs 221 are distributed on the outer wall of the second pressing plate 22 at intervals, and the second pressing plate 22 is fixedly connected with the sample plate body 10 through the second connecting ribs 221; a second through hole 222 is formed between every two adjacent second connecting ribs 221, and a second virtual wire frame with the same shape as the second milling frame 12 is formed by the plurality of second through holes 222.
The first pressing plate 21 and the second pressing plate 22 are fixedly connected with the sample plate body 10 by the first connecting rib 211 and the second connecting rib 221, so that the overall strength of the sample plate is improved; meanwhile, the first virtual wire frame and the second virtual wire frame are formed, so that when the protective adhesive film of the skin in the area needing to be chemically milled is subjected to scribing and trimming, scribing and trimming are only required to be performed along the first virtual wire frame and the second virtual wire frame, and finally the protective adhesive film on the area needing to be chemically milled is directly removed.
In this embodiment, a multifunctional template is further used to perform a circular hole opening operation on the skin, that is, each second pressing plate 22 is further provided with a third milling frame 13, the third milling frame 13 is a circular frame, and a third connecting rib 131 in a cross-shaped structure is arranged in the third milling frame 13.
Scribing and trimming the skin along the contour edge of the third milling frame 13 by using a blade to form a circular hole opening on the skin; the third connecting rib 131 also serves to further improve the strength of the screed body 10.
Optionally, the outer end edge of the template body 10 is provided with a skin allowance plate 14, a connecting flange 141 is arranged on the end surface of the skin allowance plate 14 opposite to the template body 10, and the skin allowance plate 14 is fixed with the template body 10 through the flange 141; a third through hole 142 is formed between every two adjacent flanges 141, and a plurality of third through holes 142 form a third virtual wire frame having the same shape as the template body 10.
The skin allowance plate 14 is mainly used for reserving a part of allowance when the skin unfolding material is subjected to scribing and trimming; it will be appreciated that the skin profile produced by trimming the skin using the profile of the template body 10 is the actual finished profile, whereas the skin profile produced by score trimming the skin expanse using the template with the skin allowance plate 14 is the margin-rich profile.
Referring now to fig. 1-3, the process of operation can be summarized as follows:
the first step is as follows: firstly, a multifunctional sample plate is used for attaching the multifunctional sample plate to a skin unfolding material, and a sharp blade is used for scribing and trimming along the appearance of a skin allowance plate 14 on the sample plate, so that the preliminarily formed skin has a certain allowance;
the second step is that: then coating the film on the whole skin;
the third step: attaching the multifunctional sample plate to the skin after film pasting again, and scribing and carving the skin along the first virtual line frame and the second virtual line frame by using a blade to remove the protective adhesive film on the surface of the chemical milling area required by the skin; then, scribing and trimming are carried out along the third chemical milling frame 13 to remove the protective adhesive film on the skin corresponding to the position needing chemical milling;
the fourth step: and (4) placing the skin processed in the third step into a special alkaline solution for chemical milling to achieve the purpose of reducing the weight.
The fifth step: the skin after chemical milling is attached to the multifunctional sample plate again, scribing and trimming are carried out along the third chemical milling frame 13 so that a circular opening in the skin can be formed, and meanwhile, final scribing and trimming are carried out on the skin along the third virtual wire frame so that the allowance appearance of the skin can be removed, and the skin with the required size is finally formed.
Optionally, the width of the skin margin plate 14 is W, where W is 50mm, i.e. there is a margin of 50mm around the skin formed in the first step, and the subsequent steps are performed with the margin, while in the fifth step the 50mm margin needs to be cut off to form the final high-precision aircraft skin.
In this embodiment, the skin allowance plate 14 is provided with at least two positioning holes 143, and the positioning holes 143 are used for positioning the skin of the aircraft; namely, the positioning holes 143 are used for positioning when the multifunctional template is attached to the skin unfolding material in the first step, so that the precision is prevented from being influenced by mutual dislocation in the subsequent scribing process.
Optionally, the multifunctional template described above is formed from an integral aluminum alloy sheet by numerical control laser cutting.
By adopting the technical scheme, the special sample plate is arranged, the operations of marking and blanking, trimming and shaping, perforating and chemical milling of the edge line of the area of the aircraft skin unfolding material (blank) are realized by utilizing the sample plate, so that multiple functions are integrated on one set of sample plate, the marking precision can be effectively guaranteed by the sample plate, and the marking efficiency is improved.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (8)
1. The multifunctional template for blanking, chemical milling and engraving of the aircraft skin is characterized by comprising a template body (10) with the same shape as the aircraft skin, wherein a first chemical milling frame (11) and second chemical milling frames (12) arranged on the left side and the right side of the first chemical milling frame (11) in a mirror image mode are arranged in the template body (10);
the multifunctional template further comprises a first pressing plate (21) and a second pressing plate (22); the first pressing plate (21) is the same as the first milling frame (11) in shape and can be placed in the first milling frame (11); the second pressing plate (22) has the same shape as the second milling frame (12) and can be placed in the second milling frame (12).
2. The multifunctional template for blanking, milling and carving of aircraft skin as claimed in claim 1, wherein a plurality of first convex connecting ribs (211) are distributed at intervals on the outer wall of the first pressing plate (21), and the first pressing plate (21) is fixedly connected with the template body (10) through the first connecting ribs (211); a first through hole (212) is formed between every two adjacent first connecting ribs (211), and a plurality of first through holes (212) form a first virtual wire frame with the same shape as the first milling frame (11).
3. The multifunctional template for blanking, milling and carving of aircraft skin as claimed in claim 2, wherein a plurality of second convex connecting ribs (221) are distributed at intervals on the outer wall of the second pressing plate (22), and the second pressing plate (22) is fixedly connected with the template body (10) through the second connecting ribs (221); a second through hole (222) is formed between every two adjacent second connecting ribs (221), and a plurality of second through holes (222) form a second virtual wire frame with the same shape as the second milling frame (12).
4. The multifunctional template for blanking, chemical milling and carving of aircraft skin according to claim 3 is characterized in that a third chemical milling frame (13) is further arranged on each second pressing plate (22), the third chemical milling frame (13) is a circular frame, and third connecting ribs (131) in a cross-shaped structure are arranged in the third chemical milling frame (13).
5. The multifunctional template for blanking, chemical milling and carving of the aircraft skin as claimed in any one of claims 1-4, characterized in that the outer end edge of the template body (10) is provided with a skin allowance plate (14), the end surface of the skin allowance plate (14) opposite to the template body (10) is provided with a flange (141), and the skin allowance plate (14) is fixed with the template body (10) through the flange (141); a third through hole (142) is formed between every two adjacent flanges (141), and a plurality of third through holes (142) form a third virtual wire frame with the same shape as the sample plate body (10).
6. The multifunctional template for blanking, milling and carving of aircraft skin as claimed in claim 5, wherein the skin allowance plate (14) is provided with at least two positioning holes (143), and the positioning holes (143) are used for positioning the aircraft skin.
7. The multifunctional template for blanking and chemically milling and engraving of aircraft skin as claimed in claim 5, wherein the width of the skin allowance plate (14) is W, wherein W is 50 mm.
8. The multifunctional template for blanking and chemical milling and carving of aircraft skin as claimed in claim 1, wherein the multifunctional template is formed by numerical control laser cutting of an integrated aluminum alloy plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120559551.7U CN215201951U (en) | 2021-03-18 | 2021-03-18 | Multifunctional sample plate for blanking and chemical milling and carving of aircraft skin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120559551.7U CN215201951U (en) | 2021-03-18 | 2021-03-18 | Multifunctional sample plate for blanking and chemical milling and carving of aircraft skin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215201951U true CN215201951U (en) | 2021-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120559551.7U Active CN215201951U (en) | 2021-03-18 | 2021-03-18 | Multifunctional sample plate for blanking and chemical milling and carving of aircraft skin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215201951U (en) |
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2021
- 2021-03-18 CN CN202120559551.7U patent/CN215201951U/en active Active
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Effective date of registration: 20230310 Address after: 444100 No.1 Lingyun Road, Yuyang office, Dangyang city, Yichang City, Hubei Province Patentee after: Lingyun (Yichang) aviation equipment Engineering Co.,Ltd. Patentee after: LINGYUN SCIENCE & TECHNOLOGY GROUP CO.,LTD. Address before: 430000 No. 200, 1st-19th floor, comprehensive office building south of Jinshan Avenue, Jinyinhu District, Dongxihu District, Wuhan City, Hubei Province Patentee before: Wuhan Lingke aviation composite material Co.,Ltd. Patentee before: LINGYUN SCIENCE & TECHNOLOGY GROUP CO.,LTD. |