CN112393649A - Modular assembly method for spherical prefabricated fragment of ammunition warhead - Google Patents
Modular assembly method for spherical prefabricated fragment of ammunition warhead Download PDFInfo
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- CN112393649A CN112393649A CN202010977617.4A CN202010977617A CN112393649A CN 112393649 A CN112393649 A CN 112393649A CN 202010977617 A CN202010977617 A CN 202010977617A CN 112393649 A CN112393649 A CN 112393649A
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- 239000012634 fragment Substances 0.000 title claims abstract description 95
- 238000000034 method Methods 0.000 title claims abstract description 47
- 239000000853 adhesive Substances 0.000 claims abstract description 15
- 230000001070 adhesive effect Effects 0.000 claims abstract description 14
- 238000005303 weighing Methods 0.000 claims abstract description 9
- 239000003292 glue Substances 0.000 claims abstract description 3
- 238000004140 cleaning Methods 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 4
- 238000009826 distribution Methods 0.000 claims description 2
- 230000001788 irregular Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007723 die pressing method Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000002147 killing effect Effects 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B33/00—Manufacture of ammunition; Dismantling of ammunition; Apparatus therefor
- F42B33/001—Devices or processes for assembling ammunition, cartridges or cartridge elements from parts
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- General Engineering & Computer Science (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
Abstract
The invention discloses a modular assembly method for spherical fragments prefabricated on an ammunition warhead, which comprises the following steps: modularization of the prefabricated spherical fragments: according to the technical requirements of the size, the number, the size, the quality and the mass center of the fragments, the requirement of the inner cavity structure of the warhead is met, the shape and the size of the fragments are designed, the fragments are divided into a plurality of blocks vertically and horizontally, and a mold is designed according to the shape and the size of each block; weighing the fragments and putting the fragments into a mould according to the designed weight of each fragment, wherein the putting method adopts a regular arrangement method or a vibration method; and filling the adhesive into the broken piece after the broken piece is placed into the mold, filling the adhesive glue into the broken piece gap, and curing to form a module with a required shape, so that the broken piece and the mold module are integrated. Compared with the prior art, the invention can divide the modules according to the shape of the inner cavity of the warhead, obtain the fragment modules with the required shapes by utilizing the die, and respectively adhere the fragment modules to the corresponding positions of the inner cavity of the warhead, thereby realizing the fragment assembly requirements of various warheads.
Description
Technical Field
The invention relates to the technical field of ammunition assembly, in particular to a modular assembly method for a prefabricated spherical fragment of an ammunition warhead.
Background
In order to improve the killing power of weapon ammunition, designers achieve the aim by increasing the charge amount, improving the explosion density and range and the like, and achieve the aim by changing the internal structure, namely loading the prefabricated spherical fragments without changing the appearance and the launching platform. The common methods for breaking the spherical pieces by prefabricating the spherical pieces at present include a mechanical processing method and an integral die pressing forming method.
The mechanical processing method is characterized in that a prefabricated groove is carved on the inner cavity or the outer surface of the warhead, and the warhead is broken to form fragments according to the prefabricated groove when in explosion, so that the killing effect is improved; the integral die pressing forming method is to make the broken piece into a ball shape and put the ball into a sleeve die to be pressed and formed, thus obtaining the prefabricated ball-shaped broken piece sleeve. The prefabricated spherical fragment sleeve and the projectile body are in interference fit, the prefabricated spherical fragment sleeve is pressurized and loaded into the projectile body and combined with the projectile body into a whole, and the prefabricated spherical fragment projectile is manufactured.
However, the two methods are difficult to realize for the special-shaped warhead, the large missile warhead and the warhead with the mouth part smaller than the inner cavity.
Disclosure of Invention
In order to solve the technical defects, the invention aims to provide a modular assembly method for spherical fragments of a prefabricated ammunition warhead, which can divide modules according to the shape of an inner cavity of the warhead, manufacture a mould according to the shape of each module, obtain the fragment modules with required shapes by using the moulds, and respectively adhere the fragment modules to the corresponding positions of the inner cavity of the warhead, thereby realizing the fragment assembly requirements of various warheads.
In order to achieve the purpose, the invention adopts the technical scheme that: a modular assembly method for ammunition warhead pre-fabricated spherical fragments, comprising the steps of:
1) modularization of the prefabricated spherical fragments: according to the technical requirements of the size, the number, the size, the quality and the mass center of the fragments, the requirement of the inner cavity structure of the warhead is met, the shape and the size of the fragments are designed, the fragments are divided into a plurality of blocks vertically and horizontally, and a mold is designed according to the shape and the size of each block;
2) weighing the fragments and putting the fragments into a mould according to the designed weight of each fragment, wherein the putting method adopts a regular arrangement method or a vibration method;
3) filling adhesive into the broken pieces after the broken pieces are placed into the mold, so that the adhesive glue is filled in the broken piece gaps, and forming a module in a required shape after curing, so that the broken pieces and the mold module are integrated;
4) module assembling: after the fragments are modularized, weighing and numbering each fragment, and reasonably allocating the distribution of the modules in the circumferential and axial directions to reduce mass eccentricity and mass center deviation; cleaning the bonding parts of the modules and the bullet walls, uniformly coating an adhesive, and bonding the modules to the corresponding positions of the inner cavity of the warhead one by one according to the design requirement; in order to ensure firm bonding, a tool or an air-filled bag is used for pressing and curing, and the fragment module and the warhead are integrated after curing.
Further, the regular arrangement method is that the mould is made into a convex-concave mould with the same inner shape as the projectile body, the concave mould is horizontally placed, the fragments are regularly placed on the concave mould row by row, and after the placement is finished, the convex mould is assembled.
The vibration method is characterized in that weighed spherical fragments are directly poured into a mold, and the fragments are compactly distributed by vibration or shaking, so that the vibration method is suitable for modular production of the spherical fragments.
When the ammunition warhead is the special-shaped warhead, the inner cavity is irregular, the fragment is divided into a plurality of modules with the same shape according to the shape of the inner cavity, and the size of each module is smaller than that of the mouth of the warhead, so that the modules are guaranteed to be assembled smoothly.
When the ammunition warhead is a large-scale missile warhead, the mass is large, the requirements on mass eccentricity and mass center deviation are high, the traditional prefabricated spherical fragment method is difficult to meet the design requirements, and the fragment module assembly method can effectively ensure the requirements on the mass eccentricity and the mass center deviation of the warhead; in order to ensure mass eccentricity, in the bonding process, the modules with similar mass are placed at symmetrical positions on the circumference, so that the fragment mass is symmetrically distributed along the circumferential direction, and the mass eccentricity error is reduced; in order to adjust the mass center deviation, the modules are sorted according to the mass sizes, and the front and back positions of the modules are determined according to the mass center deviation requirement, so that the mass center moves forwards or backwards, and the purpose of adjusting the mass center is achieved.
When the size of the opening of the ammunition warhead is smaller than that of the inner cavity, the fragment module formed integrally cannot be assembled, the fragment is made into a plurality of modules with the same shape as the inner cavity of the warhead, the size of the modules is smaller than that of the opening of the warhead, and the modules can be smoothly loaded into the inner cavity from the opening to realize the assembly of the fragments of the warhead.
The invention is suitable for the warheads of low-speed rotating missiles with different calibers and different shapes, and is particularly suitable for the special-shaped warheads, the large-sized missile warheads and the warheads with the mouth part size smaller than the inner cavity.
The invention has the beneficial effects that: in recent years, in order to meet the requirements of modern wars, the warheads with various inner cavity shapes and special shapes are more and more, the conventional prefabricated spherical fragment method cannot meet the requirements of various special-shaped warheads, and the fragment modular assembly method is adopted to solve the technical problem;
the fragments are modularized according to the shape of the inner cavity of the warhead, and then the modules are adhered to the inner wall of the warhead.
For the large missile warhead, the total weight of the prefabricated spherical fragments is large, and the fragment module assembly method is adopted, so that the operability is strong, the assembly effect is good, and the labor intensity and the working difficulty of workers can be greatly reduced. In the assembling process, the mass eccentricity and the mass center deviation can be adjusted, so that the mass eccentricity and the mass center of the warhead can meet the design requirements more easily;
for the warhead with the mouth part smaller than the inner cavity, the technical bottleneck that the whole fragment can not be assembled is effectively broken through by adopting the fragment modularization assembly method.
Drawings
The structure and features of the invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is a schematic view of a modular structure of a large-medium sized warhead cavity head fragment according to embodiment 1 of the present invention.
Fig. 2 is a schematic view of a modular structure of a broken piece of a cylinder part in a small and medium-sized warhead in embodiment 2 of the present invention.
In FIGS. 1 and 2, 1-spherical fragment, 2-adhesive.
Detailed Description
Example 1
The fragment module is a modular structure schematic diagram of a fragment at the head of an inner cavity of a large-scale warhead (figure 1). In order to fully utilize the inner cavity space of the head of the warhead and ensure the requirements of the quality and the mass center of the warhead, the fragment module with the structure is designed. The specific process method comprises the following steps:
firstly, determining the shape and the size of a module according to technical parameters of a warhead, and designing and processing a mould. Cleaning the broken pieces with gasoline and alcohol, weighing the spherical broken pieces according to the requirements of a drawing, putting the spherical broken pieces into a mold, vibrating or shaking to enable the spherical broken pieces to be arranged compactly, slowly injecting a vacuumized adhesive into the mold, filling the adhesive into each gap of the broken pieces, then sealing the mold, and heating and curing at the temperature according to the technological requirements. And after curing, disassembling the die, cleaning the die block, weighing, and respectively and uniformly coating an adhesive on the bonding parts of the die block and the warhead for bonding. In order to ensure firm bonding, a pressing tool is used for pressing and curing the module, so that the module and the warhead are bonded reliably.
Example 2
The fragment module is a fragment modular structure schematic diagram (figure 2) of a cylindrical part in a small-sized warhead, and if the size of the mouth part of the warhead is smaller than that of an inner cavity, the fragment module can not be assembled integrally, and the fragments are respectively pasted on the inner wall of a shell of the warhead after being divided into three parts in a modular way (divided along the circumferential direction). The specific process method comprises the following steps:
according to design requirements, the fragments are divided into three equal parts preliminarily, and the size of each fragment after equal division is just smaller than that of the mouth of the warhead, so that smooth assembly can be realized. Firstly, designing and manufacturing a mould according to the size and shape of each block, weighing spherical fragments, putting the spherical fragments into the mould, and vibrating or shaking the spherical fragments to ensure that the spherical fragments are densely distributed; vertically placing the mold on a platform, slowly injecting the vacuumized adhesive into the mold, and filling the mold with the adhesive; and then sealing the mold, and heating and curing according to the temperature required by the process. After curing, disassembling the die, cleaning the die, weighing, respectively and uniformly coating adhesive on the bonding parts of the die and the warhead, and bonding the fragment die to the corresponding positions of the warhead one by one; in order to ensure firm bonding, an internal supporting and jacking tool is designed to apply pressure to the module, so that firm bonding between the module and the warhead is ensured.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. A modular assembly method for pre-fabricated spherical fragments of an ammunition warhead, comprising the steps of:
1) modularization of the prefabricated spherical fragments: according to the technical requirements of the size, the number, the size, the quality and the mass center of the fragments, the requirement of the inner cavity structure of the warhead is met, the shape and the size of the fragments are designed, the fragments are divided into a plurality of blocks vertically and horizontally, and a mold is designed according to the shape and the size of each block;
2) weighing the fragments and putting the fragments into a mould according to the designed weight of each fragment, wherein the putting method adopts a regular arrangement method or a vibration method;
3) filling adhesive into the broken pieces after the broken pieces are placed into the mold, so that the adhesive glue is filled in the broken piece gaps, and forming a module in a required shape after curing, so that the broken pieces and the mold module are integrated;
4) module assembling: after the fragments are modularized, weighing and numbering each fragment, and reasonably allocating the distribution of the modules in the circumferential and axial directions to reduce mass eccentricity and mass center deviation; cleaning the bonding parts of the modules and the bullet walls, uniformly coating an adhesive, and bonding the modules to the corresponding positions of the inner cavity of the warhead one by one according to the design requirement; in order to ensure firm bonding, a tool or an air-filled bag is used for pressing and curing, and the fragment module and the warhead are integrated after curing.
2. A modular assembly method for ammunition warhead pre-fabricated spherical fragments according to claim 1, wherein: the regular arrangement method is that the mould is made into a convex-concave mould with the same inner shape as the projectile body, the concave mould is horizontally placed, the fragments are regularly placed on the concave mould row by row, and after the placement is finished, the convex mould is assembled.
3. A modular assembly method for ammunition warhead pre-fabricated spherical fragments according to claim 1, wherein: the vibration method is characterized in that weighed spherical fragments are directly poured into a mold, and the fragments are compactly distributed by vibration or shaking, so that the vibration method is suitable for modular production of the spherical fragments.
4. A modular assembly method for ammunition warhead pre-fabricated spherical fragments according to claim 1, wherein: when the ammunition warhead is the special-shaped warhead, the inner cavity is irregular, the fragment is divided into a plurality of modules with the same shape according to the shape of the inner cavity, and the size of each module is smaller than that of the mouth of the warhead, so that the modules are guaranteed to be assembled smoothly.
5. A modular assembly method for ammunition warhead pre-fabricated spherical fragments according to claim 1, wherein: when the ammunition warhead is a large-scale missile warhead, the mass is large, the requirements on mass eccentricity and mass center deviation are high, the traditional prefabricated spherical fragment method is difficult to meet the design requirements, and the fragment module assembly method can effectively ensure the requirements on the mass eccentricity and the mass center deviation of the warhead; in order to ensure mass eccentricity, in the bonding process, the modules with similar mass are placed at symmetrical positions on the circumference, so that the fragment mass is symmetrically distributed along the circumferential direction, and the mass eccentricity error is reduced; in order to adjust the mass center deviation, the modules are sorted according to the mass sizes, and the front and back positions of the modules are determined according to the mass center deviation requirement, so that the mass center moves forwards or backwards, and the purpose of adjusting the mass center is achieved.
6. A modular assembly method for ammunition warhead pre-fabricated spherical fragments according to claim 1, wherein: when the size of the opening of the ammunition warhead is smaller than that of the inner cavity, the fragment module formed integrally cannot be assembled, the fragment is made into a plurality of modules with the same shape as the inner cavity of the warhead, the size of the modules is smaller than that of the opening of the warhead, and the modules can be smoothly loaded into the inner cavity from the opening to realize the assembly of the fragments of the warhead.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010977617.4A CN112393649A (en) | 2020-09-17 | 2020-09-17 | Modular assembly method for spherical prefabricated fragment of ammunition warhead |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010977617.4A CN112393649A (en) | 2020-09-17 | 2020-09-17 | Modular assembly method for spherical prefabricated fragment of ammunition warhead |
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| CN112393649A true CN112393649A (en) | 2021-02-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113280696A (en) * | 2021-06-08 | 2021-08-20 | 北京理工大学 | Bushing structure, prefabricated fragment killing warhead and manufacturing method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4781117A (en) * | 1987-07-20 | 1988-11-01 | The United States Of America As Represented By The Secretary Of The Navy | Fragmentable warhead of modular construction |
| US20040011238A1 (en) * | 2000-07-03 | 2004-01-22 | Torsten Ronn | Modular warhead for units of ammunition such as missiles |
| US20050109234A1 (en) * | 2001-08-23 | 2005-05-26 | Lloyd Richard M. | Kinetic energy rod warhead with lower deployment angles |
| US20060086279A1 (en) * | 2001-08-23 | 2006-04-27 | Lloyd Richard M | Kinetic energy rod warhead with lower deployment angles |
| CN104827616A (en) * | 2015-04-30 | 2015-08-12 | 西安近代化学研究所 | Spherical fragment bonding molding die |
| US10018453B1 (en) * | 2014-04-15 | 2018-07-10 | Lockheed Martin Corporation | Lightweight monolithic warhead and a method of manufacture |
-
2020
- 2020-09-17 CN CN202010977617.4A patent/CN112393649A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4781117A (en) * | 1987-07-20 | 1988-11-01 | The United States Of America As Represented By The Secretary Of The Navy | Fragmentable warhead of modular construction |
| US20040011238A1 (en) * | 2000-07-03 | 2004-01-22 | Torsten Ronn | Modular warhead for units of ammunition such as missiles |
| US20050109234A1 (en) * | 2001-08-23 | 2005-05-26 | Lloyd Richard M. | Kinetic energy rod warhead with lower deployment angles |
| US20060086279A1 (en) * | 2001-08-23 | 2006-04-27 | Lloyd Richard M | Kinetic energy rod warhead with lower deployment angles |
| US10018453B1 (en) * | 2014-04-15 | 2018-07-10 | Lockheed Martin Corporation | Lightweight monolithic warhead and a method of manufacture |
| CN104827616A (en) * | 2015-04-30 | 2015-08-12 | 西安近代化学研究所 | Spherical fragment bonding molding die |
Non-Patent Citations (1)
| Title |
|---|
| 张俊等: "破甲杀伤复合战斗部仿真研究", 《计算机仿真》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113280696A (en) * | 2021-06-08 | 2021-08-20 | 北京理工大学 | Bushing structure, prefabricated fragment killing warhead and manufacturing method thereof |
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Application publication date: 20210223 |
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