CN110355333A - One kind being used for solid rocket motor case forming metal core mold structure - Google Patents
One kind being used for solid rocket motor case forming metal core mold structure Download PDFInfo
- Publication number
- CN110355333A CN110355333A CN201910771307.4A CN201910771307A CN110355333A CN 110355333 A CN110355333 A CN 110355333A CN 201910771307 A CN201910771307 A CN 201910771307A CN 110355333 A CN110355333 A CN 110355333A
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- small end
- mandrel
- big end
- core model
- hook disk
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
- B22C9/101—Permanent cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
- B22C9/103—Multipart cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
- B22C9/24—Moulds for peculiarly-shaped castings for hollow articles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
The invention discloses one kind to be used for solid rocket motor case forming metal core mold structure, by big end hook disk, small end hook disk, connector gland, positioning ring, small end curve part, core model segmental mandrel and mandrel composition.Core model segmental mandrel appearance curved surface is circumferentially divided into muti-piece mold section, wherein having one piece of mold section is widget, the dismounting for core model segmental mandrel；Segmental mandrel both ends thin slice has inwardly protruded trapezoid boss, which cooperates with the interior annular groove of corresponding big end hook disk and small end hook disk, for guaranteeing the dimensional accuracy of core model outer mold surface；There is reinforcing rib on every piece of segmental mandrel both sides, to guarantee the radial rigidity in winding process；There is vertical plane vertically downward at segmental mandrel both ends, match convenient for small end connector and small end curve part；Positioning ring is embedded with inside big end hook disk, small end hook disc-annular shape inner surface and mandrel are fitted close.Core mold structure has the characteristics that dismounting is convenient, positioning accuracy is high, long service life.
Description
Technical field
The present invention relates to solid rocket motor case manufacturing technologies, specifically, being related to a kind of for solid-rocket hair
The reusable metal core die of motivation fiber winding shell.
Background technique
The shell structure of solid propellant rocket is to constitute the main part of engine passiveness quality, is had an high regard for engine
It is very bigger than influencing.Carbon fibre composite since it is with the excellent performances such as high specific strength, big specific modulus, corrosion-resistant,
Solid propellant rocket field is widely used, to significantly improve the performance of solid propellant rocket.As twining
The basis of winding technologe design and steps necessary, core model are shaped to important link.After the quality and precision of core model directly affect
Continuous winding, solidification, demoulding and machine adds procedure.
Since the last century 60's, core model technology experienced full gypsum core model and sand core mould, assembly type gypsum core model and
Sand core mould and metallic framework assembly type gypsum core model and sand core mould three phases.Gypsum core model due to be easy cracking, precision compared with
The problems such as poor, therefore section people have developed metal core die and metallic framework is applied with gypsum core model, then as composite material casing
The increase of size, this core model form is still easy cracking, and dismounts and take time and effort, while being difficult to ensure precision.
Summary of the invention
In order to avoid the shortcomings of the prior art, metal core die, metallic framework gypsum core model is overcome to dismount time-consuming expense
Power, and the problem of be difficult to ensure precision, the present invention proposes a kind of for solid rocket motor case forming metal core mold structure；
Guaranteed by way of being embedded in high-precision unbroken loop in associated structural component core model assembling after radial dimension with higher
Precision, to meet Practical Project production requirement.
The technical solution adopted by the present invention to solve the technical problems is: including big end connector gland, big end locking member, spiral shell
Female, big end connector, bolt, key, screw, big end positioning ring, big end hook disk, small end hook disk, axial bolt, small end connector gland,
Small end nut, flat key, locking nut, limit sleeve, small end connector, small end positioning ring, small end curve part, core model segmental mandrel and core
Axis, it is characterised in that the core model segmental mandrel appearance curved surface is circumferentially divided into muti-piece mold section, and one of mold section is widget,
Dismounting for core model segmental mandrel；Segmental mandrel both ends thin slice has inwardly protruded trapezoid boss, the boss internal spherical surface and phase
The interior annular groove of the big end hook disk and small end hook disk answered cooperates, for guaranteeing the dimensional accuracy of core model outer mold surface；Every piece point
There is reinforcing rib on petal both sides, to guarantee the radial rigidity in winding process；
Big end positioning ring is embedded with inside the big end hook disk, positioning ring is used to guarantee the radial dimension of big end hook disk；Big end
Locking member is bolted with big end hook disk, and big end locking member is for locking outside the core model segmental mandrel being made of segmental mandrel
Shape curved surface, and limit axial dimension and the position of core model；Big end locking member is connect with mandrel by key, screw, to lock
Entire core model is to guarantee its axial dimension；Big end connector is located on the outside of core model segmental mandrel, successively locks with big end connector gland, big end
Tight part is cooperatively connected, and passes through nut check；
The small end hook disc-annular shape inner surface and mandrel are fitted close, and small end positioning ring and small end curve part pass through axial direction
Screw is connected as one, inner ring surface abut small end hook disk outer surface, small end curve part successively with small end connector, small end connector
Gland, limit sleeve and small end nut are cooperatively connected, and are fastened by locking nut.
Big end hook disk, big end positioning ring, small end hook disk, small end positioning ring, small end curve part and mandrel are co-axially mounted.
Beneficial effect
It is proposed by the present invention it is a kind of be used for solid rocket motor case forming metal core mold structure, by big end hook disk, small
End hook disk, connector gland, connector, positioning ring, small end curve part, core model segmental mandrel and mandrel composition.Core model segmental mandrel shape
Curved surface divides lobed formula using circumferential direction, and core model outer surface is divided into dismountable muti-piece mold section, wherein having a valve is widget, uses
In the dismounting of core model segmental mandrel；Segmental mandrel both ends thin slice has inwardly protruded trapezoid boss, the boss internal spherical surface and corresponding
Big end hook disk and small end hook disk interior annular groove cooperate, guarantee core model outer mold surface dimensional accuracy；Every piece of segmental mandrel two
Bian Junyou reinforcing rib, to guarantee the radial rigidity in winding process；Positioning ring, small end hook disc-annular shape are embedded with inside big end hook disk
Inner surface and mandrel are fitted close.Core mold structure is with convenient for disassembly and assembly, positioning accuracy is high, long service life and production cost are low
Feature.
Bring difficulty is dismantled to metal core die to overcome small end metal joint shoulder to be recessed outward, by small end curvature portion
Excision a part cooperates with small end connector, which guarantees its radial accuracy and integral structure by small end positioning ring, both guaranteed
The convenience of disassembly, and guarantee its dimensional accuracy simultaneously.And it is suitable for the reusable solid-rocket hair of manufacture high-precision
Motivation shell overcomes its gypsum skeleton core model and sand core mould high production cost and the low disadvantage of formed precision.
Detailed description of the invention
With reference to the accompanying drawing with embodiment to of the invention a kind of for solid rocket motor case forming metal core model
Structure is described in further detail.
Fig. 1 (a), (b), (c), (d) are solid rocket motor case forming metal core mold structure figure.
Fig. 2 is that the present invention is used for solid rocket motor case forming metal core mold structure schematic diagram.
Fig. 3 (a), (b), (c), (d) are segmental mandrel block diagram.
Fig. 4 (a), (b), (c), (d) are casting segmental mandrel block diagram.
Fig. 5 (a), (b) are big end hook disk component schematic diagram.
Fig. 6 is small end curve part schematic diagram.
In figure
1. 12. big 16. spiral shell of end connector of big 13. big end locking member of end connector gland, 14. nut 15. of~11. segmental mandrel
The big 21. small termination of small 22. axial bolt of end hook disk 23. of end hook disk of 17. key of bolt, 18. screw, 19. big end positioning ring 20.
The small 29. small end positioning ring of end connector of 27. limit sleeve of head 24. 26. locking nut of small 25. flat key of end nut of gland 28.
30. small end curve part
Specific embodiment
The present embodiment is a kind of for solid rocket motor case forming metal core mold structure.
Refering to fig. 1~Fig. 6, the present embodiment is used for solid rocket motor case forming metal core mold structure, by terminating greatly
Head gland 12, big end locking member 13, nut 14, big end connector 15, bolt 16, key 17, screw 18, big end positioning ring 19, big end
Hook disk 20, small end hook disk 21, axial bolt 22, small end connector gland 23, small end nut 24, flat key 25, locking nut 26, limit
Set 27, small end connector 28, small end positioning ring 29, small end curve part 30, core model segmental mandrel and mandrel composition；Wherein, core model point
Petal appearance curved surface is circumferentially divided into muti-piece mold section, wherein having one piece of mold section is widget, the dismounting for core model segmental mandrel；
Segmental mandrel both ends thin slice has inwardly protruded trapezoid boss, the boss internal spherical surface and corresponding big end hook disk 20 and small end hook
The interior annular groove of disk 21 cooperates, for guaranteeing the dimensional accuracy of core model outer mold surface.There is reinforcing rib on every piece of segmental mandrel both sides,
To guarantee the radial rigidity in winding process；There is vertical plane vertically downward at each segmental mandrel both ends, so as to small termination
First 28 and small end curve part match.
In the present embodiment, core model segmental mandrel appearance curved surface is circumferentially partitioned into 11 pieces of mold sections, wherein segmental mandrel 3 divides
Petal 4, segmental mandrel 5, segmental mandrel 6, segmental mandrel 7, segmental mandrel 8, segmental mandrel 9, segmental mandrel 10 are equal part core model valve, and segmental mandrel 1 divides
Petal 2, segmental mandrel 11 are not equal part core model valve, and each valve core model two sides are designed as containing thin slice straight down, in order to
Adjacent segmental mandrel with it cooperates.Segmental mandrel 1 is lesser metal segmental mandrel, easy to disassemble.Segmental mandrel both ends thin slice is oriented
The trapezoid boss of internal projection, the boss are the key that guarantee metal core die outer dimension precision, therefore boss lower annular face must
It must guarantee enough precision, the decision of the precision depends on the size requirement of final core model outer mold surface.Each segmental mandrel two sides
Bian Junyou downward rib can generate less big deformation using welding method when every segmental mandrel is thicker, to core model outside
Surface forming precision influences little.If every segmental mandrel is relatively thin, rib is welded on by meeting on segmental mandrel using welding method
Generate biggish deformation, it is difficult to guarantee formed precision requirement, it is therefore necessary to process segmental mandrel using casting method；By rib and divide
Successively casting and forming finishes petal outer mold surface again, can cast a sinew adding strips in two segmental mandrels when operation is cast, cast
It can achieve predetermined size required precision at finishing is cut again later.
It is embedded with big end positioning ring 19 inside big end hook disk 20, positioning ring is used to guarantee the radial dimension of big end hook disk.Big end
Locking member 13 is connect with big end hook disk 20 by bolt 16, and big end locking member 13 divides valve by the core model that segmental mandrel forms for locking
Die topography curved surface fastens core model outer mold surface, and limits axial dimension and the position of core model.Big end locking member 13 and mandrel pass through key
17, screw 18 connects, to lock entire core model to guarantee its axial dimension.Key on mandrel is used to transmit fiber winding process
In torque；Big end connector 15 is located on the outside of core model segmental mandrel, successively connects with big end connector gland 12, the cooperation of big end locking member 13
It connects, is locked by nut 14.
Small end hook disc-annular shape inner surface and mandrel are fitted close, and small end positioning ring 29 and small end curve part 30 pass through axial direction
Screw 22 is connected as one, and inner ring surface abuts small end hook disk outer surface.Small end curve part 30 successively with small end connector 28, small
End connector gland 23, limit sleeve 27 and small end nut 24 are cooperatively connected, and are fastened by locking nut 26；Small end hook disk inner surface with
The trapezoidal protrusion of core model segmental mandrel matches, it is ensured that the required precision of core model appearance curved surface.Due to practical small 28 shoulder of end connector
It is angularly offset outward, difficulty can be brought to the dismounting of segmental mandrel.Small end curvature portion excision a part is cooperated with connector,
The part guarantees its radial accuracy and integrated degree by small end positioning ring 29.Small end curve part 30 is averaged along circumferential direction
It is divided into pintongs, which is connected as one by small end positioning ring 29 with axial bolt 22, by means of small
The cooperation of end curved surface part inner ring surface and small end hook disk outer surface guarantees the radial dimension precision of the small end curved-surface piece；This method was both
The convenience that can guarantee dismounting ensures that positive camber precision.
Big end locking member 13 is integrated formula ring flange component, is connected by bolt 16 with big end hook disk 20.When assembly
First bolt 16 and big end hook disk 20 are tightened, there are certain gaps therebetween, have assembled to all core model segmental mandrels
Finish and then tighten bolt 16, locks big end locking member 13 and big end hook disk 20.Key 17 and flat key 25 are for providing core model rotation
When torsional moment.Big end connector gland 12, nut 14,26 component of small end connector gland 23, small end nut 24 and locking nut
For locking entire core model axial position, guarantee the rigid body that can not be translatable that core model is integrated during the winding process.
Erection sequence: first big end positioning ring 19 and big end hook disk 20 are connected as one, locked big end by bolt 16
Part 13 is tentatively tightened with big end hook disk 20, and there are certain gaps therebetween.Small end hook disk 21 is close to mandrel, by core
Mould segmental mandrel 1~11 is hooked in small 21 annular groove of end hook disk with this, while tightening bolt 16 for big end locking member 13 and big end hook
Disk 20 is locked, so far, core model curved surface forming.Small end curve part 30 is pacified by axial bolt 22 with small end positioning ring 29
Dress is integrated, and inner ring surface abuts small 21 outer surface of end hook disk.Small end connector 28 and big end connector 15 are installed, limit sleeve is installed
27, big end connector gland 12 and small end connector gland 23 are installed, locked using round nut 14, small end nut 24 and locking nut 26
Entire core model, so far core model is installed.When installation operation, big end hook disk 20, big end positioning ring 19, small end hook disk, small end are fixed
Position ring 29, small end curve part 30 are co-axially mounted with mandrel.
Disassembly sequence: round nut 14, small end nut 24 and locking nut 26 outside core model are successively dismantled, big end connector is extracted
Gland 12 and small end connector gland 23, demounting bolt 16 dismantle big end locking member 13, extract mandrel.Big end connector gland 12 with
Big end positioning ring 19 takes out small end hook disk 21 from large port.Segmental mandrel 1, segmental mandrel 2 and segmental mandrel 3 are successively taken out, and divides valve
Mould 4, segmental mandrel 5, segmental mandrel 6, segmental mandrel 7, segmental mandrel 8, segmental mandrel 9, segmental mandrel 10 and segmental mandrel 11 dismantle axial bolt
22, small end positioning ring 29 is taken out, small end curve part 30 is unloaded, the disassembly of core model segmental mandrel is completed.
In the present embodiment, all components are all made of metal material and are made, install convenient, and each component can be dismounted independently, be replaced,
Cost of upkeep is low, long service life, high reliablity.
Claims (2)
1. one kind be used for solid rocket motor case forming metal core mold structure, including big end connector gland, big end locking member,
Nut, big end connector, bolt, key, screw, big end positioning ring, big end hook disk, small end hook disk, axial bolt, small end connector pressure
Lid, small end nut, flat key, locking nut, limit sleeve, small end connector, small end positioning ring, small end curve part, core model segmental mandrel
And mandrel, it is characterised in that: the core model segmental mandrel appearance curved surface is circumferentially divided into muti-piece mold section, and one of mold section is small
Component, the dismounting for core model segmental mandrel；Segmental mandrel both ends thin slice has inwardly protruded trapezoid boss, the boss internal spherical surface
It cooperates with the interior annular groove of corresponding big end hook disk and small end hook disk, for guaranteeing the dimensional accuracy of core model outer mold surface；Often
There is reinforcing rib on block segmental mandrel both sides, to guarantee the radial rigidity in winding process；
Big end positioning ring is embedded with inside the big end hook disk, positioning ring is used to guarantee the radial dimension of big end hook disk；Big end locking
Component is bolted with big end hook disk, and it is bent that big end locking member is used to lock the core model segmental mandrel shape being made of segmental mandrel
Face, and limit axial dimension and the position of core model；Big end locking member is connect with mandrel by key, screw, entire to lock
Core model is to guarantee its axial dimension；Big end connector is located at core model segmental mandrel outside, successively with big end connector gland, big end locking member
It is cooperatively connected, passes through nut check；
The small end hook disc-annular shape inner surface and mandrel are fitted close, and small end positioning ring and small end curve part pass through axial bolt
Be connected as one, inner ring surface abut small end hook disk outer surface, small end curve part successively with small end connector, small end connector pressure
Lid, limit sleeve and small end nut are cooperatively connected, and are fastened by locking nut.
2. according to claim 1 be used for solid rocket motor case forming metal core mold structure, it is characterised in that: big
End hook disk, big end positioning ring, small end hook disk, small end positioning ring, small end curve part and mandrel are co-axially mounted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910771307.4A CN110355333B (en) | 2019-08-21 | 2019-08-21 | Metal core mold structure for forming solid rocket engine shell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910771307.4A CN110355333B (en) | 2019-08-21 | 2019-08-21 | Metal core mold structure for forming solid rocket engine shell |
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| CN110355333A true CN110355333A (en) | 2019-10-22 |
| CN110355333B CN110355333B (en) | 2021-01-05 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110722810A (en) * | 2019-11-14 | 2020-01-24 | 湖北三江航天江北机械工程有限公司 | Winding shell net size forming method |
| CN110722719A (en) * | 2019-11-14 | 2020-01-24 | 江苏君澄空间科技有限公司 | Reusable mould for producing large-size lining-free composite material storage box |
| CN111890705A (en) * | 2020-03-26 | 2020-11-06 | 中国运载火箭技术研究院 | Satellite support mould |
| CN111957901A (en) * | 2020-08-25 | 2020-11-20 | 湖北三江航天江北机械工程有限公司 | Large-diameter engine shell gypsum core mold forming method |
| CN113001451A (en) * | 2021-03-07 | 2021-06-22 | 西北工业大学 | Large-scale split type metal mandrel assembly fixture |
| CN113103480A (en) * | 2021-04-01 | 2021-07-13 | 西北工业大学 | Split type metal core die for winding large solid rocket engine shell |
| CN113650200A (en) * | 2021-07-01 | 2021-11-16 | 西北工业大学 | A splice frock for split type combined material mandrel makes |
| CN113967724A (en) * | 2021-10-21 | 2022-01-25 | 江苏新扬新材料股份有限公司 | Small-opening engine shell core mold and using method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110722810A (en) * | 2019-11-14 | 2020-01-24 | 湖北三江航天江北机械工程有限公司 | Winding shell net size forming method |
| CN110722719A (en) * | 2019-11-14 | 2020-01-24 | 江苏君澄空间科技有限公司 | Reusable mould for producing large-size lining-free composite material storage box |
| CN111890705A (en) * | 2020-03-26 | 2020-11-06 | 中国运载火箭技术研究院 | Satellite support mould |
| CN111890705B (en) * | 2020-03-26 | 2022-11-04 | 中国运载火箭技术研究院 | Satellite support mould |
| CN111957901A (en) * | 2020-08-25 | 2020-11-20 | 湖北三江航天江北机械工程有限公司 | Large-diameter engine shell gypsum core mold forming method |
| CN113001451A (en) * | 2021-03-07 | 2021-06-22 | 西北工业大学 | Large-scale split type metal mandrel assembly fixture |
| CN113103480A (en) * | 2021-04-01 | 2021-07-13 | 西北工业大学 | Split type metal core die for winding large solid rocket engine shell |
| CN113650200A (en) * | 2021-07-01 | 2021-11-16 | 西北工业大学 | A splice frock for split type combined material mandrel makes |
| CN113967724A (en) * | 2021-10-21 | 2022-01-25 | 江苏新扬新材料股份有限公司 | Small-opening engine shell core mold and using method thereof |
| CN113967724B (en) * | 2021-10-21 | 2024-01-09 | 江苏新扬新材料股份有限公司 | Small-opening engine shell core mold and using method thereof |
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| CN110355333B (en) | 2021-01-05 |
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