CN109675999A - A kind of curvature mutation sheet cover viscous pressure forming device - Google Patents
A kind of curvature mutation sheet cover viscous pressure forming device Download PDFInfo
- Publication number
- CN109675999A CN109675999A CN201910064308.5A CN201910064308A CN109675999A CN 109675999 A CN109675999 A CN 109675999A CN 201910064308 A CN201910064308 A CN 201910064308A CN 109675999 A CN109675999 A CN 109675999A
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- Prior art keywords
- resisting medium
- storehouse
- resisting
- sheet cover
- power source
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/021—Deforming sheet bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/021—Deforming sheet bodies
- B21D26/027—Means for controlling fluid parameters, e.g. pressure or temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/021—Deforming sheet bodies
- B21D26/029—Closing or sealing means
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention belongs to aerospace equipment thin-wall part manufacturing fields, more particularly to a kind of curvature mutation sheet cover viscous pressure forming device, device includes pattern, sealing ring, resisting medium storehouse, resisting medium injection cylinder, resisting medium load power source hydraulic cylinder and resisting medium storehouse end part seal load power source hydraulic cylinder.Device provides resisting medium injection pressure by hydraulic control system, controls resisting medium on-load pressure；Resisting medium is loaded into forming plate blank material by resisting medium storehouse and generates forming force to it, feed cavity is set in resisting medium storehouse, according to the feed cavity of part shape and wall thickness setting different number, promote effect of each region of plate sufficiently by resisting medium pressure and resisting medium adhesive attachment stress, be conducive to flow to pattern mold cavity deformation, improve sheet material forming.The apparatus structure is simple, easy to operate, and control stability is preferable, effectively can carry out the forming of resisting medium pressure processing to curvature mutation sheet cover.
Description
Technical field
The present invention relates to the thin-wall part figuration manufacture fields of aerospace equipment more particularly to a kind of curvature mutation thin-walled to cover
Cover piece viscous pressure forming device.
Background technique
High strength thermal resistant alloy local curvature mutation sheet cover is usually used in Aeronautics and Astronautics and industrial heat energy engineering neck
The thermal protection system in domain, is typically characterised by regional area curvature mutation and wall thickness is ultra-thin, is material at curvature mutation in forming
Material supplement is difficult, the defect that even rupture is thinned in transition easily occurs, is a kind of effective solution using viscous pressure forming
Certainly method can effectively control uniform wall thickness using the distinctive non uniform pressure of resisting medium and tangential adhesive attachment stress
Property, improve form and dimensional precision.And when resisting medium being utilized to shape this kind of local curvature's mutation sheet cover forming, it plays a game
The reasonable control of the resisting medium forming force in portion region is difficult to hold, it is desirable that forming device can be in forming process to mould type
Resisting medium in chamber is effectively controlled in the forming force that each region generates, and resisting medium injection pressure and viscosity
Dielectric portion sealed pressure coordinates matching.However, not there is the forming device that can satisfy above-mentioned requirements also in the prior art.
Summary of the invention
The technical problem to be solved in the present invention is that the structure of existing viscous pressure forming device constructs so that pressure
Power is difficult to control, to influence the qualification rate of curvature mutation thin-walled cover piece, for the defects in the prior art, provides a koji
Rate is mutated sheet cover viscous pressure forming device.
The present invention is implemented with the following technical solutions:
A kind of curvature mutation sheet cover viscous pressure forming device, device include pattern, sealing ring, viscosity Jie
Matter storehouse, resisting medium injection cylinder, resisting medium load power source hydraulic cylinder and resisting medium storehouse end part seal load power source liquid
Cylinder pressure.The top in the resisting medium storehouse is arranged in the pattern, and the upper table in the resisting medium storehouse is arranged in the sealing ring
The lower section in the resisting medium storehouse is arranged in face, the resisting medium injection cylinder, and the resisting medium loads power source hydraulic cylinder
It is placed in the bottom of the resisting medium injection cylinder, under control of the control system, the resisting medium loads power source hydraulic cylinder
There is provided and control the loading force F and loading velocity of resisting medium；Resisting medium storehouse end part seal loads power source hydraulic cylinder
It is placed in the pattern upper end, under control of the control system, end part seal load power source hydraulic cylinder in the resisting medium storehouse is
Resisting medium storehouse end part seal provides loading force F '.
Preferably, funnelform feed cavity is set in the inside in the resisting medium storehouse, the taper at the top of the feed cavity
Open face plate blank material, the feed cavity bottom are connected to resisting medium injection cylinder, and it is hydraulic to load power source by resisting medium
Cylinder pushes the plunger motion being arranged in the resisting medium injection cylinder, and resisting medium is pushed to inject institute from resisting medium injection cylinder
State resisting medium storehouse.
Preferably, the feed cavity is set as 2~10, and the number of the feed cavity is true by the shape and wall thickness of plate blank material
It is fixed.
Preferably, the value range of the taper Δ of the taper opening at the top of the feed cavity is 1.2:1~5:1.
Preferably, the feed cavity base diameter is Φ, is highly h, the value range of the diameter of phi be 10mm~
The value range of 80mm, the height h are 100~160mm.
Preferably, the resisting medium injection cylinder is process using mould steel, and the resisting medium injection cylinder includes interior
Cylinder and housing, inner casing wall thickness W are 20mm~40mm, housing wall thickness a × W, and wherein coefficient a is 1.2~3.0, resisting medium injection
The height of cylinder is H, and the value range of the height H is 200mm~500mm.
Preferably, the resisting medium on-load pressure be no more than 400MPa, pressure-loaded speed be 0.1MPa/s~
1.6MPa/s。
Preferably, the resisting medium injection pressure is by resisting medium load power source hydraulic cylinder loading force F control, viscosity
Medium storehouse end part seal pressure loads the F ' control of power source hydraulic cylinder loading force by resisting medium storehouse end part seal, and the two needs mutual
Coordinate matching, and power F ' and power F is positively correlated.
Preferably, the sealing ring material is soft metal or rubber.
Preferably, the soft metal is aluminum or aluminum alloy.
Preferably, described device is arranged on the rack.
Implement above-mentioned technical proposal of the invention, has the advantages that the present invention is curvature mutation sheet cover
A kind of forming device is provided, which provides resisting medium injection pressure by hydraulic control system, loads and presses to resisting medium
Power is controlled；Resisting medium is loaded into forming plate blank material by resisting medium storehouse and generates forming force, resisting medium storehouse to it
Inside uses " funnel " shape, and open top is corresponding with plate blank material, is conducive to resisting medium to plate blank material pressure-loaded, " funnel "
The lower end of shape feed cavity loads resisting medium by plunger, while different numbers can be arranged according to formation of parts shape and wall thickness
The feed cavity of amount can make resisting medium in resisting medium storehouse be controlled effectively the forming pressure of plate blank material, promote plate
Effect of each region of material sufficiently by resisting medium pressure and resisting medium adhesive attachment stress, is conducive to pattern mold cavity deformation
Flowing improves sheet material forming.The apparatus structure is simple, easy to operate, and control stability is preferable, and it is prominent can effectively to carry out curvature
Become sheet cover viscous pressure forming.
Detailed description of the invention
Fig. 1 is the curvature mutation sheet cover viscous pressure forming apparatus structure schematic diagram in the present invention；
Fig. 2 (a)~Fig. 2 (c) is that the covering viscous pressure forming mould structure and forming process in the present invention show
It is intended to；
Fig. 3 is the covering viscous pressure forming device resisting medium chamber structure schematic diagram in the present invention；
Fig. 4 is the covering viscous pressure forming device resisting medium injection cylinder structure schematic diagram in the present invention；
Fig. 5 is 3 funnel-form feed cavity resisting medium chamber structure schematic diagrames in the present invention；
Mold structure diagram when Fig. 6 is 3 funnel-form feed cavity resisting medium storehouses forming in the present invention；
Fig. 7 is 5 funnel-form feed cavity resisting medium chamber structure schematic diagrames in the present invention.
In figure: 1: pattern；2: sealing ring；3: plate blank material；4: resisting medium；5: resisting medium storehouse；5-1: feed cavity；6: viscous
Property medium inject cylinder；6-1: inner casing；6-2: housing；7: plunger；8: resisting medium loads power source hydraulic cylinder；9: resisting medium storehouse
End part seal loads power source hydraulic cylinder；100: rack.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Referring to Fig. 1-Fig. 7, a kind of curvature mutation sheet cover viscous pressure forming device, device include pattern 1,
Sealing ring 2, resisting medium storehouse 5, resisting medium injection cylinder 6, resisting medium load power source hydraulic cylinder 8 and resisting medium storehouse end
Sealing load power source hydraulic cylinder 9.
Device is arranged in rack 100.Resisting medium 4 is loaded by forming process control system control hydraulic circuit and is realized
The processing of sheet cover.
The connection and positional relationship of device components are as follows: the top in resisting medium storehouse 5 is arranged in pattern 1, and sealing ring 2 is arranged
In the upper surface in resisting medium storehouse 5, the lower section in resisting medium storehouse 5 is arranged in resisting medium injection cylinder 6, and resisting medium loads power
Source hydraulic cylinder 8 is placed in the bottom of resisting medium injection cylinder 6, and under control of the control system, it is hydraulic that resisting medium loads power source
Cylinder 8 provides and the loading force F and loading velocity of control resisting medium 4；Resisting medium storehouse end part seal loads power source hydraulic cylinder 9
It is placed in 1 upper end of pattern, under control of the control system, it is that viscosity is situated between that resisting medium storehouse end part seal, which loads power source hydraulic cylinder 9,
5 end part seal of matter storehouse provides loading force F '.
The resisting medium injection pressure is by resisting medium load 8 loading force F of power source hydraulic cylinder control, resisting medium storehouse
End part seal pressure loads the 9 loading force F ' control of power source hydraulic cylinder by resisting medium storehouse end part seal, and the two needs mutually coordinated
Matching, power F ' increase with the increase for putting forth effort F, i.e. power F ' and power F are positively correlated.
Resisting medium on-load pressure is no more than 400MPa, and pressure-loaded speed is 0.1MPa/s~1.6MPa/s.
For the device, resisting medium storehouse 5 loads the mode of resisting medium and parameter plays a significant role.Referring to attached drawing 1-
Funnelform feed cavity 5-1 is arranged in the inside in resisting medium storehouse 5, the taper opening face slab at the top of feed cavity 5-1 in Fig. 7
Material 3, the bottom feed cavity 5-1 are connected to resisting medium injection cylinder 6, are loaded power source hydraulic cylinder 8 by resisting medium and are pushed setting
Plunger 7 in resisting medium injection cylinder 6 moves, and resisting medium 4 is pushed to inject resisting medium storehouse 5 from resisting medium injection cylinder 6.
Alternatively, the shape of the feed cavity 5-1 may also be configured to other open shapes, such as hemispherical inner cavity, for another example
Goblet shape etc..
And in order to reach the Accurate Shaping to sheet cover, the number of feed cavity 5-1 by plate blank material 3 shape and wall thickness
It determines, general feed cavity 5-1 setting is multiple, is generally set to 2~10 feed cavities according to the size in resisting medium storehouse 5.
Wherein, feed cavity 5-1 is generally uniformly arranged, or according to differing formed area, passes through finite element modelling optimization design feed cavity 5-1's
Arrangement, this is conducive to accurately control resisting medium forming force, improves drip molding precision.With the forming effect being optimal.
In one embodiment, referring to figures 1-3, the number of funnel-form feed cavity 5-1 is set as two；In such as Fig. 5 and Fig. 6
Embodiment in, the number of funnel-form feed cavity 5-1 is set as three.
Above-mentioned two embodiment corresponds to the situation that part length direction size is smaller or wall thickness is relatively thick.
And in the embodiment of such as Fig. 7, the number of funnel-form feed cavity 5-1 is set as five.The feed cavity pair of more number
It should be in the situation that part length direction size is larger or wall thickness is relatively thin.
Referring to the illustrative funnel-form feed cavity 5-1 of Fig. 1-Fig. 7, the taper opening at the top of feed cavity 5-1 has certain cone
Δ is spent, the value range of taper Δ is 1.2:1~5:1.More effectively on-load pressure can be controlled within this range.
And funnelform feed cavity 5-1 base diameter is Φ, is highly h, the value range of diameter of phi is 10mm~80mm,
The value range of height h is 100~160mm.Effectively on-load pressure can be controlled within this range.
Wherein, resisting medium is injected cylinder 6 and is process using mould steel, and resisting medium injection cylinder 6 is including inner casing 6-1 and outside
6-2 is covered, inner casing wall thickness W is 20mm~40mm, housing wall thickness a × W, and wherein coefficient a is 1.2~3.0, and resisting medium injects cylinder 6
Height be H, the value range of height H is 200mm~500mm.Setting inner casing 6-1 and housing 6-2 is conducive to improve sticky Jie
Matter injects 6 intensity of cylinder, and the specific size of resisting medium injection cylinder 6 can formation of parts and reality according to specific experiments in present embodiment
Test requirement setting.
Sealing ring 2 uses softer metals or rubber type of material, and in one embodiment, softer metals are that aluminium or aluminium close
Gold, sealing effect are more preferable.Closure gasket groove is set in the upper surface in resisting medium storehouse 5, the sealing ring 2 is arranged in the sealing
In annular groove, then plate blank material 3 to be processed is placed on the resisting medium storehouse 5 above and against the sealing ring 2.Again by pattern
1 is pressed on plate blank material 3.With the increase of loading force, sealing ring 2 is compacted, to ensure that good sealing effect.
Curvature mutation sheet cover viscous pressure forming device through the invention can be aerospace equipment
Stable sheet cover is provided, ensure that total quality and stability.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (10)
1. a kind of curvature mutation sheet cover viscous pressure forming device, device includes pattern (1), sealing ring (2), glues
Property medium storehouse (5), resisting medium injection cylinder (6), resisting medium load power source hydraulic cylinder (8) and resisting medium storehouse end part seal
It loads power source hydraulic cylinder (9), it is characterised in that: the pattern (1) setting is described in the top of the resisting medium storehouse (5)
Sealing ring (2) setting is arranged in the upper surface of the resisting medium storehouse (5), resisting medium injection cylinder (6) in the viscosity
The lower section in medium storehouse (5), resisting medium load power source hydraulic cylinder (8) are placed in the bottom of resisting medium injection cylinder (6)
Portion, under control of the control system, resisting medium load power source hydraulic cylinder (8) provides and control resisting medium (4))
Loading force F and loading velocity；Resisting medium storehouse end part seal load power source hydraulic cylinder (9) is placed on the pattern (1)
End, under control of the control system, it is the resisting medium that resisting medium storehouse end part seal, which loads power source hydraulic cylinder (9),
Storehouse (5) end part seal provides loading force F '.
2. curvature mutation sheet cover viscous pressure forming device according to claim 1, it is characterised in that:
Funnelform feed cavity (5-1) is arranged in the inside of the resisting medium storehouse (5), and the taper at the top of the feed cavity (5-1) is open
Face plate blank material (3), the feed cavity bottom (5-1) are connected to resisting medium injection cylinder (6), load power by resisting medium
Source hydraulic cylinder (8) pushes plunger (7) movement of the setting in resisting medium injection cylinder (6), pushes resisting medium (4) from viscous
Property medium injection cylinder (6) inject the resisting medium storehouse (5).
3. curvature mutation sheet cover viscous pressure forming device according to claim 2, it is characterised in that: institute
It states feed cavity (5-1) and is set as 2~10, the number of the feed cavity (5-1) is determined by the shape and wall thickness of plate blank material (3).
4. curvature mutation sheet cover viscous pressure forming device according to claim 2, it is characterised in that: institute
The value range for stating the taper Δ of the taper opening at the top of feed cavity (5-1) is 1.2:1~5:1.
5. curvature mutation sheet cover viscous pressure forming device according to claim 4, it is characterised in that: institute
Stating feed cavity (5-1) base diameter is Φ, is highly h, and the value range of the diameter of phi is 10mm~80mm, the height h
Value range be 100~160mm.
6. curvature mutation sheet cover viscous pressure forming device according to claim 1-5, special
Sign is: resisting medium injection cylinder (6) is process using mould steel, and resisting medium injection cylinder (6) includes inner casing
(6-1) and housing (6-2), inner casing wall thickness W are 20mm~40mm, housing wall thickness a × W, and wherein coefficient a is 1.2~3.0, viscosity
The height that medium injects cylinder (6) is H, and the value range of the height H is 200mm~500mm.
7. curvature mutation sheet cover viscous pressure forming device according to claim 6, it is characterised in that: institute
Resisting medium on-load pressure is stated no more than 400MPa, pressure-loaded speed is 0.1MPa/s~1.6MPa/s.
8. -5 or 7 described in any item curvature mutation sheet cover viscous pressure forming devices according to claim 1,
Be characterized in that: the resisting medium injection pressure is controlled by resisting medium load power source hydraulic cylinder (8) loading force F, and viscosity is situated between
Matter storehouse end part seal pressure loads power source hydraulic cylinder (9) loading force F ' control by resisting medium storehouse end part seal, and the two needs phase
Mutually coordinate matching, and power F ' and power F is positively correlated.
9. curvature mutation sheet cover viscous pressure forming device according to claim 8, it is characterised in that: institute
Stating sealing ring (2) material is soft metal or rubber.
10. curvature mutation sheet cover viscous pressure forming device according to claim 8, it is characterised in that:
The soft metal is aluminum or aluminum alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910064308.5A CN109675999B (en) | 2019-01-23 | 2019-01-23 | Viscous medium pressure forming device for curvature abrupt-change thin-wall covering part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910064308.5A CN109675999B (en) | 2019-01-23 | 2019-01-23 | Viscous medium pressure forming device for curvature abrupt-change thin-wall covering part |
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| CN109675999A true CN109675999A (en) | 2019-04-26 |
| CN109675999B CN109675999B (en) | 2019-12-20 |
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| CN201910064308.5A Active CN109675999B (en) | 2019-01-23 | 2019-01-23 | Viscous medium pressure forming device for curvature abrupt-change thin-wall covering part |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110314971A (en) * | 2019-08-05 | 2019-10-11 | 哈尔滨工业大学 | A kind of plate viscous pressure forming rebound self-adaptation control method |
| CN112139340A (en) * | 2020-09-14 | 2020-12-29 | 哈尔滨工业大学 | Aluminum alloy component ultralow-temperature forming device and forming method |
| CN112404532A (en) * | 2019-12-06 | 2021-02-26 | 重庆大学 | Auxiliary machining method for aviation thin-wall micro-structural part |
| CN114178387A (en) * | 2021-12-14 | 2022-03-15 | 沈阳航空航天大学 | Ultrasonic vibration assisted combustion chamber cap viscous medium forming device |
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| CN107262583A (en) * | 2017-07-12 | 2017-10-20 | 上海理工大学 | Ultra-large type thin plate curved surface part numerical control hydromechanical deep drawing manufacturing process |
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| CN110314971A (en) * | 2019-08-05 | 2019-10-11 | 哈尔滨工业大学 | A kind of plate viscous pressure forming rebound self-adaptation control method |
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| CN112139340A (en) * | 2020-09-14 | 2020-12-29 | 哈尔滨工业大学 | Aluminum alloy component ultralow-temperature forming device and forming method |
| CN114178387A (en) * | 2021-12-14 | 2022-03-15 | 沈阳航空航天大学 | Ultrasonic vibration assisted combustion chamber cap viscous medium forming device |
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| Publication number | Publication date |
|---|---|
| CN109675999B (en) | 2019-12-20 |
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