CN113561455A - Method for positioning plane material sheet in hat-shaped stringer thermal diaphragm process - Google Patents
Method for positioning plane material sheet in hat-shaped stringer thermal diaphragm process Download PDFInfo
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- CN113561455A CN113561455A CN202010357440.8A CN202010357440A CN113561455A CN 113561455 A CN113561455 A CN 113561455A CN 202010357440 A CN202010357440 A CN 202010357440A CN 113561455 A CN113561455 A CN 113561455A
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- positioning
- material sheet
- hat
- tool
- plane material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/02—Bending or folding
- B29C53/04—Bending or folding of plates or sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/80—Component parts, details or accessories; Auxiliary operations
Abstract
The invention relates to the technical field of aircraft manufacturing, in particular to a method for positioning a plane material sheet in a hat-shaped stringer heat diaphragm process, which comprises the following steps: s1, cutting end positioning holes at two opposite ends of the plane material sheet; s2, heating the thermal diaphragm tool until the temperature reaches a set temperature; s3, arranging edge strip positioning blocks on the thermal diaphragm tool along the length direction of the thermal diaphragm tool, and arranging end positioning blocks at two opposite ends of the thermal diaphragm tool; s4, placing the plane material sheet on the thermal diaphragm tool along the length direction of the thermal diaphragm tool, wherein the end positioning hole is sleeved on the end positioning block, and the plane material sheet is abutted to the edge strip positioning block; and S5, aligning the two side edges of the plane material sheet with the side edges of the edge strip positioning blocks, and finishing the positioning of the plane material sheet on the heat diaphragm tool. The invention can ensure that the cap-shaped stringer formed after processing can not generate larger deviation.
Description
Technical Field
The invention relates to the technical field of aircraft manufacturing, in particular to a method for positioning a plane material sheet in a hat-type stringer thermal diaphragm process.
Background
The composite hat stringers are the primary support structure for the composite fuselage, and the hat stringers are cured with the fuselage skin by co-bonding or co-curing. The cap stringers account for more than 90% of the total fuselage stringer count, and therefore how to efficiently and qualitatively complete the fabrication of the cap stringers becomes critical to the fabrication of composite fuselages.
The thermal diaphragm process is characterized in that under the condition of vacuumizing, fiber laying layers in a stringer plane material sheet heated to a certain temperature are driven to slide between layers by utilizing the extension of a diaphragm material, the plane material sheet is bent into a cross section of a hat-shaped stringer on a hat-shaped stringer tool, and the hat-shaped stringer thermal diaphragm process forming is completed. The heat diaphragm equipment can be used for forming a plurality of hat-shaped stringers at one time, and has high production efficiency.
However, the accuracy of planar material sheet positioning during the formation of the hat-type stringer thermal diaphragm directly affects the stringer fiber angle deviation, the generation of preform wrinkles and the internal quality of the R-angle of the hat bottom after the part is cured. In the prior art, because a reliable positioning mode is not available for the plane material sheets, the large-size plane material sheets generate material sheet deviation and fiber wrinkles of a preform caused by the material sheet deviation, and large deviation is generated in the hat-shaped stringer after processing.
Therefore, a method for positioning a planar web in a hat stringer thermal membrane process is needed to solve the above problems.
Disclosure of Invention
The invention aims to provide a method for positioning a plane material sheet in a hat type stringer thermal diaphragm process, which can accurately position the plane material sheet so as to ensure that the hat type stringer formed after processing cannot generate large deviation.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for positioning a plane material sheet in a hat type stringer thermal diaphragm process comprises the following steps:
s1, cutting end positioning holes at two opposite ends of the plane material sheet;
s2, heating the thermal diaphragm tool until the temperature reaches a set temperature;
s3, arranging edge strip positioning blocks on the thermal diaphragm tool along the length direction of the thermal diaphragm tool, and arranging end positioning blocks at two opposite ends of the thermal diaphragm tool;
s4, placing the plane material sheet on the thermal diaphragm tool along the length direction of the thermal diaphragm tool, wherein the end positioning hole is sleeved on the end positioning block, and the plane material sheet is abutted to the edge strip positioning block;
and S5, aligning the two side edges of the plane material sheet with the side edges of the edge strip positioning blocks, and finishing the positioning of the plane material sheet on the heat diaphragm tool.
Alternatively, in step S2, the set temperature may be set according to actual needs.
Optionally, the thermal diaphragm tool comprises a tool body and a cap-shaped protrusion, the cap-shaped protrusion is arranged along the length direction of the tool body on the tool body, the flange positioning block is arranged on the tool flange of the tool body, and the end positioning block is arranged on the cap-shaped protrusion.
Optionally, the edge positioning block is arranged in plurality along the length direction of the tool body.
Optionally, the edge positioning blocks are arranged at equal intervals along the length direction of the tool body.
Optionally, one end of the rim positioning block abuts against one side of the cap-shaped protrusion.
Optionally, the shape of the side of the rim positioning block abutted to the cap-shaped protrusion is matched with the shape of the side of the cap-shaped protrusion.
Optionally, the distance between two adjacent edge positioning blocks is not more than 3 m.
The invention has the beneficial effects that:
the invention provides a method for positioning a plane material sheet in a hat-shaped stringer thermal diaphragm process, which comprises the steps of cutting end positioning holes at two opposite ends of the plane material sheet, arranging end positioning blocks on a thermal diaphragm tool, and preliminarily positioning the plane material sheet by matching the end positioning holes with the end positioning blocks; the heat diaphragm tool is provided with a flange positioning block, the planar material sheet is abutted against the flange positioning block, and the edges of two sides of the planar material sheet are aligned with the edges of the side edges of the flange positioning block, so that the relative position of the planar material sheet on the heat diaphragm tool is limited, and the material sheet deviation phenomenon caused by inaccurate positioning is prevented; and the flange positioning block can support the planar material sheet, so that fiber wrinkles of the preformed body are prevented from occurring, the planar material sheet is positioned, and the cap-shaped stringer formed after processing is ensured not to generate large deviation.
Drawings
FIG. 1 is a flow chart of a method of positioning a planar web in a hat stringer thermal membrane process according to the present invention;
FIG. 2 is a schematic view of a planar web positioned on a thermal diaphragm tooling in a method of positioning a planar web in a hat stringer thermal diaphragm process of the present invention;
FIG. 3 is a front view of a planar web positioned on a thermal diaphragm tooling in a method of positioning a planar web in a hat stringer thermal diaphragm process of the present invention.
In the figure:
1-a planar web; 2-thermal diaphragm tooling; 21-a cap-shaped protrusion; 22-tooling edge strips; 23-end positioning blocks; 3-edge strip positioning blocks.
Detailed Description
The technical scheme of the invention is further explained by combining the attached drawings and the embodiment. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The manufacture of the hat type stringer is vital to the manufacture of a composite material fuselage, so in order to solve the problem that in the prior art, due to the fact that a plane material sheet is not accurately positioned on a heat diaphragm tool, the large-size plane material sheet generates material sheet deviation and fiber wrinkles of a preformed body caused by the material sheet deviation, and the machined hat type stringer generates large deviation, as shown in figures 1 to 3, the invention provides a method for positioning the plane material sheet in a hat type stringer heat diaphragm process. The positioning method comprises the following steps:
s1, end positioning holes are cut at opposite ends of the planar web 1, specifically, one end positioning hole is cut at each of the opposite ends of the planar web 1.
S2, heating the thermal diaphragm tool 2 until the temperature reaches a set temperature; specifically, in the present embodiment, the set temperature can be set according to actual needs, thereby ensuring that the temperature at which the planar web 1 is heated satisfies the needs of the actual conditions.
S3, arranging edge strip positioning blocks 3 on the thermal diaphragm tool 2 along the length direction of the thermal diaphragm tool 2, and fixedly arranging end positioning blocks 23 at two opposite ends of the thermal diaphragm tool 2;
s4, placing the plane material sheet 1 on the thermal diaphragm tool 2 along the length direction of the thermal diaphragm tool 2, sleeving the end positioning hole on the end positioning block 23, and abutting the plane material sheet 1 with the edge strip positioning block 3;
and S5, aligning the two side edges of the plane material sheet 1 with the side edges of the edge strip positioning blocks 3, and finishing the positioning of the plane material sheet 1 on the heat diaphragm tool 2.
Cutting end positioning holes at two opposite ends of the plane material sheet 1, arranging an end positioning block 23 on the thermal diaphragm tool 2, and preliminarily positioning the plane material sheet 1 through matching the end positioning holes with the end positioning block 23; the heat diaphragm tool 2 is provided with the edge strip positioning block 3, the plane material sheet 1 is abutted against the edge strip positioning block 3, two side edges of the plane material sheet 1 are aligned with the side edges of the edge strip positioning block 3, the relative position of the plane material sheet 1 on the heat diaphragm tool 2 is limited, and the material sheet deviation phenomenon caused by inaccurate positioning is prevented; and the flange strip positioning block 3 can support the plane material sheet 1, so as to prevent the fiber wrinkles of the preformed body from occurring, thereby completing the positioning of the plane material sheet 1 and ensuring that the cap-shaped stringer formed after processing cannot generate large deviation.
Further, the thermal diaphragm tool 2 comprises a tool body and a cap-shaped protrusion 21, the cap-shaped protrusion 21 is arranged on the tool body along the length direction of the tool body, the flange positioning block 3 is arranged on the tool flange 22 of the tool body, and the end positioning block 23 is arranged on the cap-shaped protrusion 21. In the present embodiment, the tooling beads 22 are located on both sides of the cap-shaped protrusion 21, and also the bead positioning blocks 3 are disposed on both sides of the cap-shaped protrusion 21. Through setting up rim locating piece 3, can provide the support for plane tablet 1 on the one hand, on the other hand, can prescribe a limit to the specific position of plane tablet 1 relative to thermal diaphragm frock 2.
Further, a plurality of the bead positioning blocks 3 are arranged along the length direction of the tool body, so that sufficient support can be provided for the planar material sheet 1. Specifically, the edge strip positioning blocks 3 are arranged at equal intervals along the length direction of the tool body. Ensuring that the planar material sheet 1 is uniformly stressed. Of course, it is worth noting that the distance between two adjacent edge strip positioning blocks 3 is not more than 3 meters, so that fiber wrinkles can be avoided in the process of manufacturing the preform body by the planar material sheet 1.
Further, in order to facilitate the positioning of the side edges of the bead positioning blocks 3, the relative position of the planar material sheets 1 is effectively defined. One end of the rim strip positioning block 3 is abutted against one side of the cap-shaped protrusion 21. Specifically, the shape of the side of the rim positioning block 3 abutting against the cap-shaped protrusion 21 is adapted to the shape of the side of the cap-shaped protrusion 21. Through the arrangement, the positioning difficulty of the plane material sheet 1 is reduced, and the positioning precision of the plane material sheet 1 is improved.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (8)
1. A method for positioning a plane material sheet in a hat-shaped stringer thermal diaphragm process is characterized by comprising the following steps:
s1, cutting end positioning holes at two opposite ends of the plane material sheet (1);
s2, heating the thermal diaphragm tool (2) to a set temperature;
s3, arranging edge strip positioning blocks (3) on the thermal diaphragm tool (2) along the length direction of the thermal diaphragm tool (2), and arranging end positioning blocks (23) at two opposite ends of the thermal diaphragm tool (2);
s4, placing the plane material sheet (1) on the thermal diaphragm tool (2) along the length direction of the thermal diaphragm tool (2), wherein the end positioning hole is sleeved on the end positioning block (23), and the plane material sheet (1) is abutted to the edge strip positioning block (3);
s5, aligning the two side edges of the plane material sheet (1) with the side edges of the edge strip positioning blocks (3) to complete the positioning of the plane material sheet (1) on the heat diaphragm tool (2).
2. The method of claim 1, wherein the set temperature is set according to actual requirements in step S2.
3. The method for positioning the plane material sheet in the hat type stringer thermal diaphragm process according to claim 1, wherein the thermal diaphragm tool (2) comprises a tool body and a hat type protrusion (21), the hat type protrusion (21) is arranged on the tool body along the length direction of the tool body, the flange positioning block (3) is arranged on a tool flange (22) of the tool body, and the end positioning block (23) is arranged on the hat type protrusion (21).
4. The method for positioning planar material sheets in a hat type stringer thermal membrane process according to claim 3, wherein a plurality of the bead positioning blocks (3) are provided along the length direction of the tool body.
5. The method for positioning plane material sheets in the hat type stringer thermal diaphragm process according to claim 4, wherein the bead positioning blocks (3) are arranged at equal intervals along the length direction of the tool body.
6. The method for positioning planar web in hat stringer thermal membrane process according to claim 3, wherein one end of the flange positioning block (3) abuts one side of the hat protrusion (21).
7. The method for positioning planar web in hat stringer thermal membrane process according to claim 6, wherein the shape of the side of the flange positioning block (3) abutting the hat protrusion (21) is adapted to the shape of the side of the hat protrusion (21).
8. The method for positioning planar sheets in a hat stringer thermal membrane process according to claim 4, wherein the distance between two adjacent bead positioning blocks (3) is not more than 3 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010357440.8A CN113561455A (en) | 2020-04-29 | 2020-04-29 | Method for positioning plane material sheet in hat-shaped stringer thermal diaphragm process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010357440.8A CN113561455A (en) | 2020-04-29 | 2020-04-29 | Method for positioning plane material sheet in hat-shaped stringer thermal diaphragm process |
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| CN113561455A true CN113561455A (en) | 2021-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010357440.8A Pending CN113561455A (en) | 2020-04-29 | 2020-04-29 | Method for positioning plane material sheet in hat-shaped stringer thermal diaphragm process |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103950211A (en) * | 2014-03-11 | 2014-07-30 | 中航复合材料有限责任公司 | Molding device and molding method for hat-shaped composite material stringer blank |
| CN104029397A (en) * | 2014-06-09 | 2014-09-10 | 中航复合材料有限责任公司 | Preparation device of aircraft composite material fuselage wall panels and preparation method thereof |
| CN108327320A (en) * | 2018-03-07 | 2018-07-27 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | A kind of spar mold |
| CN110901097A (en) * | 2018-09-14 | 2020-03-24 | 中国商用飞机有限责任公司 | Prepreg laminated board positioning method and thermal diaphragm preforming method |
-
2020
- 2020-04-29 CN CN202010357440.8A patent/CN113561455A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103950211A (en) * | 2014-03-11 | 2014-07-30 | 中航复合材料有限责任公司 | Molding device and molding method for hat-shaped composite material stringer blank |
| CN104029397A (en) * | 2014-06-09 | 2014-09-10 | 中航复合材料有限责任公司 | Preparation device of aircraft composite material fuselage wall panels and preparation method thereof |
| CN108327320A (en) * | 2018-03-07 | 2018-07-27 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | A kind of spar mold |
| CN110901097A (en) * | 2018-09-14 | 2020-03-24 | 中国商用飞机有限责任公司 | Prepreg laminated board positioning method and thermal diaphragm preforming method |
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Application publication date: 20211029 |