CN109501060B - Method and mold for manufacturing unmanned aerial vehicle body shell - Google Patents
Method and mold for manufacturing unmanned aerial vehicle body shell Download PDFInfo
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- CN109501060B CN109501060B CN201811493344.5A CN201811493344A CN109501060B CN 109501060 B CN109501060 B CN 109501060B CN 201811493344 A CN201811493344 A CN 201811493344A CN 109501060 B CN109501060 B CN 109501060B
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- shell
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- die holder
- aerial vehicle
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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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
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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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/70—Maintenance
- B29C33/72—Cleaning
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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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
- B29C70/342—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation using isostatic pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
- B29L2031/3076—Aircrafts
- B29L2031/3082—Fuselages
Abstract
The invention belongs to the technical field of unmanned aerial vehicles, and particularly relates to a method and a die for manufacturing a body shell of an unmanned aerial vehicle. The method comprises the following steps: 1) designing and processing a die for manufacturing a shell of the unmanned aerial vehicle body, wherein the die comprises an upper die holder, a lower die holder and an internal die, the internal die is used for layering of shell layering materials, and when the upper die holder is connected with the lower die holder, the upper die holder and the lower die holder surround a cavity for maintaining the shape of the shell layering materials during curing; 2) the method comprises the following steps that raw materials of the unmanned aerial vehicle body shell are laid on an inner die in a surrounding mode, and a certain gap distance is reserved in a middle area when the raw materials are laid on a die transition area of the inner die, so that the manufactured unmanned aerial vehicle body shell is a front shell and a rear shell and is not in contact with each other; 3) placing the inner die in a cavity defined by the upper die holder and the lower die holder, and fixedly connecting the upper die holder and the lower die holder; 4) putting the whole mould into a curing and forming autoclave for heating and curing to obtain a front shell and a rear shell of the unmanned aerial vehicle body shell.
Description
Technical Field
The invention belongs to the technical field of unmanned aerial vehicles, and particularly relates to a method and a die for manufacturing a body shell of an unmanned aerial vehicle.
Background
With the further development of the technical field of aviation, unmanned planes have become the focus of research in various countries. The aircraft has the characteristics of small volume, unmanned performance, long flight time, high precision and the like, can be used in a plurality of fields of communication relay, monitoring, investigation and monitoring and the like in marginal areas, and has wide military and civil application prospects. At present, to the development of conventional small-size unmanned aerial vehicle fuselage casing, generally all adopt the covering of laminating fuselage frame body to bond, the riveting method, good aerodynamic characteristic and aesthetic property can not generally be guaranteed to the casing developed through this method, can increase unmanned aerial vehicle's flight resistance to when influence flight is voyaged, and then restrict this type of unmanned aerial vehicle's range of application. Therefore, there is a need for an improved method of manufacturing a fuselage shell of an unmanned aerial vehicle to better ensure the aerodynamic characteristics of the shell.
Disclosure of Invention
The object of the present invention is to solve at least one of the problems of the prior art mentioned above, and the object is achieved by the following technical solutions:
the invention provides a method for manufacturing a body shell of an unmanned aerial vehicle, which comprises the following steps:
1) designing and processing a die for manufacturing a shell of the unmanned aerial vehicle body, wherein the die comprises an upper die holder, a lower die holder and an inner die, the inner die is used for layering of shell layering materials, the upper die holder and the lower die holder are detachably connected, and when the upper die holder is connected with the lower die holder, the upper die holder and the lower die holder surround a cavity for maintaining the shape of the shell layering materials during curing; the upper die base, the lower die base and the inner die are all provided with die transition areas, and the die transition areas are formed by performing equal expansion on the maximum sectional area of the machine body profile of the corresponding die;
2) the method comprises the following steps of (1) paving raw materials of the unmanned aerial vehicle body shell on an inner die in a surrounding manner, wherein a certain gap distance is reserved in a middle area when the raw materials are paved in a die transition area of the inner die so as to ensure that the manufactured unmanned aerial vehicle body shell is a front shell and a rear shell and is not in contact with each other;
3) placing the inner die in a cavity defined by the upper die holder and the lower die holder, and fixedly connecting the upper die holder and the lower die holder;
4) putting the whole mould into a curing molding autoclave for heating and curing, thereby obtaining a front shell and a rear shell of the unmanned aerial vehicle body shell.
Further, the method further comprises the steps of:
5) removing burrs and sharp parts of the front shell and the rear shell;
6) processing shell connecting holes on the front shell and the rear shell;
7) the surfaces of the front and rear cases are cleaned with alcohol.
Further, the length of the transition zone of the die is 20 mm.
Further, when the die transition area of the inner die is layered in the step 2), the gap distance left in the middle area is 10 mm.
Further, when the mold in the step 4) is placed into a curing molding autoclave for heating and curing, the heating temperature is 135 ℃, the temperature rise time is controlled to be 45 minutes, the pressure is controlled to be 1.1 standard atmospheric pressure, and the heating time is 2 hours.
The invention further provides a die for manufacturing the unmanned aerial vehicle body shell, which comprises an upper die holder, a lower die holder and an inner die, wherein the inner die is used for layering of shell layering materials, the upper die holder and the lower die holder are detachably connected, and when the upper die holder is connected with the lower die holder, the upper die holder and the lower die holder surround a cavity for maintaining the shell layering materials during curing.
Furthermore, the upper die holder, the lower die holder and the inner die are manufactured and processed by using a die engraving machine according to the profile of the unmanned aerial vehicle body and in combination with die manufacturing tolerance.
Further, the upper die holder, the lower die holder and the inner die are correspondingly provided with die transition areas, and the die transition areas are formed by performing equal expansion on the upper die holder, the lower die holder or the inner die at the position of the maximum sectional area of the profile of the machine body by 20 mm.
Furthermore, the upper die holder and the lower die holder are connected through bolts.
The invention has the advantages that:
1. the unmanned aerial vehicle body shell manufactured by the method provided by the invention can ensure that the body shell has good aerodynamic characteristics and aesthetic property, thereby ensuring the flight performance of the unmanned aerial vehicle and enabling the unmanned aerial vehicle to have a wider application range. 2. The method provided by the invention gives consideration to the comprehensive requirements of the existing unmanned aerial vehicle on the strength of the body shell, good aerodynamic characteristics, light weight, attractiveness, simplicity in installation, detachability and the like in the development process. 3. According to the invention, the manufactured machine body shell is divided into the shell front part and the shell rear part which are not contacted with each other by arranging the die transition area, so that the cutting and the machine body installation connection are convenient, and the requirements of simple installation and detachability are met. 4. The unmanned aerial vehicle body shell manufactured by the method can meet the application requirements of the unmanned aerial vehicle, and simultaneously, the total structural weight of the shell is reduced to the maximum extent.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a schematic view of a mold according to an embodiment of the present invention;
FIG. 2 is a schematic view of an inner mold according to an embodiment of the present invention;
fig. 3 is a schematic diagram of the overall structure of the unmanned aerial vehicle.
The symbols in the above figures are explained as follows:
1: an upper die holder and 2: lower die holder, 3: internal mold, 4: shell layer material, 5: mold transition zone, 6: the housing is connected to the aperture.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.
The invention provides a method for manufacturing a body shell of an unmanned aerial vehicle, which comprises the following steps:
1) designing and processing a die for manufacturing a shell of an unmanned aerial vehicle body, wherein the die comprises an upper die holder 1, a lower die holder 2 and an inner die 3, the inner die 3 is used for layering a shell layering material 4, the upper die holder 1 and the lower die holder 2 are detachably connected, and when the upper die holder 1 is connected with the lower die holder 2, the upper die holder 1 and the lower die holder 2 surround a cavity for maintaining the shape of the shell layering material 4 during curing; the upper die holder 1, the lower die holder and the inner die 3 are all provided with die transition areas 5, and the die transition areas 5 are formed by performing equal expansion on the corresponding dies at the position of the maximum sectional area of the profile of the machine body;
2) the method comprises the following steps of (1) laying raw materials of an unmanned aerial vehicle body shell on an inner die 3 in a surrounding manner, wherein a certain gap distance is reserved in a middle area when a die transition area 5 of the inner die 3 is laid, so that the manufactured unmanned aerial vehicle body shell is a front shell and a rear shell and is not in contact with each other;
3) placing the inner die 3 in a cavity formed by enclosing the upper die holder 1 and the lower die holder 2, and fixedly connecting the upper die holder 1 with the lower die holder 2;
4) putting the whole mould into a curing molding autoclave for heating and curing, thereby obtaining a front shell and a rear shell of the unmanned aerial vehicle body shell.
The unmanned aerial vehicle body shell manufactured by the method provided by the invention can ensure that the body shell has good aerodynamic characteristics and aesthetic property, thereby ensuring the flight performance of the unmanned aerial vehicle and enabling the unmanned aerial vehicle to have a wider application range.
In the above embodiment, preferably, the method for manufacturing the unmanned aerial vehicle fuselage shell further includes the following steps:
5) removing burrs and sharp parts of the front shell and the rear shell;
6) a shell connecting hole 6 is processed on the front shell and the rear shell;
7) the surfaces of the front and rear cases are cleaned with alcohol.
In the above embodiment, the length of the transition zone 5 of the mold is preferably 20 mm.
In the above embodiment, preferably, the gap distance left in the middle area when the inner mold 3 is layered in the mold transition area 5 in step 2) is 10 mm.
In the above embodiment, preferably, when the mold is placed in the curing molding autoclave for heating and curing in step 4), the heating temperature is 135 ℃, the temperature rise time is controlled to be 45 minutes, the pressure is controlled to be 1.1 standard atmospheric pressure, and the heating time is 2 hours.
In the above embodiment, preferably, the shell layer material 4 is carbon fiber cloth, glass fiber cloth, aramid fiber cloth, or Vectran fiber cloth.
In the above embodiment, preferably, the material for making the mold may be a material with small deformation under environmental influence, such as metal, solid wood, etc.
Based on the method, the invention further provides a die for manufacturing the unmanned aerial vehicle body shell, which comprises an upper die holder 1, a lower die holder 2 and an inner die 3, wherein the inner die 3 is used for laying the shell laying material 4, the upper die holder 1 and the lower die holder 2 are detachably connected, and when the upper die holder 1 is connected with the lower die holder 2, the upper die holder 1 and the lower die holder 2 surround a die cavity for maintaining the shell laying material 4 during curing.
In the above embodiment, preferably, the upper die holder 1, the lower die holder 2 and the inner die 3 are manufactured by processing a die manufacturing material by a die engraving machine according to the profile of the unmanned aerial vehicle body and in combination with the manufacturing tolerance of the die.
In the above embodiment, preferably, the upper die base 1, the lower die base and the inner die 3 are respectively and correspondingly provided with a die transition area 5, and the die transition area 5 is formed by performing full equal expansion on the upper die base 1, the lower die base or the inner die 3 at the position of the maximum cross-sectional area of the profile of the machine body by 20 mm.
In the above embodiment, the upper die base 1 and the lower die base 2 are preferably connected by bolts.
Further, before the design of the mold for manufacturing the unmanned aerial vehicle body shell, the unmanned aerial vehicle body is designed by utilizing airplane modeling software according to the overall design requirements of the unmanned aerial vehicle, so that a complete body outline drawing is established, and then the mold is designed by utilizing the airplane modeling software. The airplane modeling software is mainly some common drawing software, such as CATIA, UG and the like.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (9)
1. A method for making a fuselage shell of a drone, comprising the steps of:
1) designing and processing a die for manufacturing a shell of the unmanned aerial vehicle body, wherein the die comprises an upper die holder, a lower die holder and an inner die, the inner die is used for layering of shell layering materials, the upper die holder and the lower die holder are detachably connected, and when the upper die holder is connected with the lower die holder, the upper die holder and the lower die holder surround a cavity for maintaining the shape of the shell layering materials during curing; the upper die base, the lower die base and the inner die are all provided with die transition areas, and the die transition areas are formed by performing equal expansion on the maximum sectional area of the machine body profile of the corresponding die;
2) the method comprises the following steps of (1) paving raw materials of the unmanned aerial vehicle body shell on an inner die in a surrounding manner, wherein a certain gap distance is reserved in a middle area when the raw materials are paved in a die transition area of the inner die so as to ensure that the manufactured unmanned aerial vehicle body shell is a front shell and a rear shell and is not in contact with each other;
3) placing the inner die in a cavity defined by the upper die holder and the lower die holder, and fixedly connecting the upper die holder and the lower die holder;
4) putting the whole mould into a curing molding autoclave for heating and curing, thereby obtaining a front shell and a rear shell of the unmanned aerial vehicle body shell.
2. The method for making a fuselage shell of a drone of claim 1, further comprising the steps of:
5) removing burrs and sharp parts of the front shell and the rear shell;
6) processing shell connecting holes on the front shell and the rear shell;
7) the surfaces of the front and rear cases are cleaned with alcohol.
3. The method for making a fuselage shell of a drone of claim 1, wherein the length of the mold transition zone is 20 mm.
4. The method for making a fuselage shell of an unmanned aerial vehicle of claim 3, wherein the step 2) leaves a gap distance of 10mm in the middle area when the mold transition area of the inner mold is layered.
5. The method for manufacturing the unmanned aerial vehicle fuselage shell according to claim 1, wherein the step 4) is to place the mold into a curing and forming autoclave for heating and curing, wherein the heating temperature is 135 ℃, the heating time is controlled at 45 minutes, the pressure is controlled at 1.1 standard atmospheric pressure, and the heating time is 2 hours.
6. The method of claim 1, wherein the shell ply material is carbon fiber cloth, glass fiber cloth, aramid fiber cloth, or Vectran fiber cloth.
7. The mold for manufacturing the unmanned aerial vehicle body shell is characterized by comprising an upper mold base, a lower mold base and an inner mold, wherein the inner mold is used for layering of shell layering materials, the upper mold base and the lower mold base are detachably connected, and when the upper mold base is connected with the lower mold base, the upper mold base and the lower mold base surround a cavity for maintaining the shell layering materials during curing; the upper die base, the lower die base and the inner die are correspondingly provided with die transition areas, and the die transition areas are formed by performing full equal expansion on the upper die base, the lower die base or the inner die at the position of the maximum sectional area of the profile of the machine body by 20 mm.
8. The mold for manufacturing the unmanned aerial vehicle fuselage shell according to claim 7, wherein the upper mold base, the lower mold base and the inner mold are manufactured and processed by a mold engraving machine according to the unmanned aerial vehicle fuselage outline and in combination with mold manufacturing tolerance.
9. The mold for manufacturing the unmanned aerial vehicle fuselage shell according to claim 7 or 8, wherein the upper mold base and the lower mold base are connected through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811493344.5A CN109501060B (en) | 2018-12-07 | 2018-12-07 | Method and mold for manufacturing unmanned aerial vehicle body shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811493344.5A CN109501060B (en) | 2018-12-07 | 2018-12-07 | Method and mold for manufacturing unmanned aerial vehicle body shell |
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| Publication Number | Publication Date |
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| CN109501060A CN109501060A (en) | 2019-03-22 |
| CN109501060B true CN109501060B (en) | 2020-02-07 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4533220B2 (en) * | 2005-04-12 | 2010-09-01 | 新日本製鐵株式会社 | Hydroform mold |
| CN101870172B (en) * | 2010-06-09 | 2012-10-10 | 哈尔滨工业大学 | Preparation mould of carbon fiber composite material casing of airplane and aircraft and forming method thereof |
| CN204414642U (en) * | 2015-01-06 | 2015-06-24 | 王梁 | The mold pressing assembling die of replaceable internal mold |
| CN105563851A (en) * | 2016-02-04 | 2016-05-11 | 上海晋飞新材料科技有限公司 | Moulding process for fuselage of UAV (Unmanned Aerial Vehicle) |
| CN106217697B (en) * | 2016-08-30 | 2018-09-14 | 山东双一科技股份有限公司 | A kind of molding die and preparation method thereof of composite material multi-rotor unmanned aerial vehicle horn |
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