CN106270093B - A kind of hollow blade viscoelastroplasticity soft mode internal pressure manufacturing process and forming device - Google Patents
A kind of hollow blade viscoelastroplasticity soft mode internal pressure manufacturing process and forming device Download PDFInfo
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- CN106270093B CN106270093B CN201610815107.0A CN201610815107A CN106270093B CN 106270093 B CN106270093 B CN 106270093B CN 201610815107 A CN201610815107 A CN 201610815107A CN 106270093 B CN106270093 B CN 106270093B
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- cylinder base
- hollow blade
- viscoelastroplasticity
- internal pressure
- manufacturing process
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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
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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
- B21D53/00—Making other particular articles
- B21D53/78—Making other particular articles propeller blades; turbine blades
Abstract
A kind of hollow blade viscoelastroplasticity soft mode internal pressure manufacturing process and forming device, to solve the hollow blade of existing method processing, the problem that complex technical process, dimensional accuracy are low, wall thickness reduction is serious, evenness of wall thickness is poor.Method: one, cylinder base processed；Two, cylinder base is fitted into sealing device；Three, sealing device is packed on press machine and with upper die and lower die to just；Four, viscoelastoplastic material is injected；Five, molding forming；Six, opening mold obtains formation of parts；Seven, addendum is cut off, hollow blade finished product is obtained.Device: fixed frame is four framework frames, the opposite framework of any two is equipped with stepped hole on fixed frame, each stepped hole is followed successively by overflow valve mounting hole and cylinder base mounting hole from outside to inside, two stepped holes are symmetrical arranged relative to cylinder base, each overflow valve mounting hole is provided with an overflow valve, upper die and lower die are separately positioned on the upper and lower side of a base, and closo chamber is equipped between upper mold and lower die.The present invention is for making hollow blade.
Description
Technical field
The present invention relates to a kind of soft mode internal pressure manufacturing process and forming devices, and in particular to a kind of hollow blade viscoelastroplasticity
Soft mode internal pressure manufacturing process and forming device belong to hollow object forming technique field.
Background technique
Blade is the kernel component inside aero-engine, work under conditions of High Temperature And Velocity combustion gas is impacted,
In order to reduce the temperature that blade material is born, usually blade is made hollow, internal blowing air is cooled down.Size essence
Degree, surface quality and evenness of wall thickness are the mostly important attributes of hollow blade.The forming that such hollow blade uses at present
The method that method is mainly cast form, fills out wax moulding and divides valve punching press then butt welding.Cast form is needed by complexity
Machining and electric machining process, finally polish, and processing technology is complicated and blank dimension changes greatly, especially metallurgical quality
Control is difficult；It fills out wax moulding paraffin is filled into a base, shape at room temperature, since paraffin is solid-state at normal temperature, flowing
Property it is bad, blank clamping accuracy is low, and reduction is higher, quality control it is poor；Divide valve punching press then butt welding, dimensional accuracy is by each
The presence of the influence of process, quality control difficulties, and weld seam has seriously affected the quality and performance of part.
Summary of the invention
The present invention is the hollow blade for solving existing method processing, and complex technical process, dimensional accuracy are low, wall thickness reduction is tight
The problem of weight, evenness of wall thickness difference, and propose a kind of hollow blade viscoelastroplasticity soft mode internal pressure manufacturing process and forming device.
A kind of hollow blade viscoelastroplasticity soft mode internal pressure manufacturing process of the invention, the manufacturing process is by following step
Suddenly it realizes:
Step 1: cylinder base processed: circular cylinder base is made in Metal Sheet in Curling welding, the fixed section at circular cylinder base both ends is processed into
Diameter is greater than blade section among cylinder base, is changeover portion between blade section and fixed section；
Step 2: cylinder base is fitted into sealing device: cylinder base being fitted into sealing device, folding base is fixedly clamped；
Step 3: sealing device be packed into press machine: the sealing device for being equipped with a base is installed on press machine, and with it is upper
Mould and lower die to just, positioning；
Step 4: injection viscoelastoplastic material: injecting viscoelastoplastic material into cylinder base, while passing through overflow valve to cylinder base
Internal pressurising makes to form certain internal pressure inside a base, and the states of matter of viscoelastoplastic material is semisolid；
Step 5: molding forming: starting press machine, press machine drive upper mold with the speed downlink of 0.005m/s, and to cylinder
Base and its internal viscoelastoplastic material integrally load, until upper mold and lower die are closed, cylinder base viscoelastoplastic material pressure and
Under the action of upper die and lower die, forming is bonded with the type chamber of upper die and lower die；
Step 6: opening mold: removal formation of parts internal pressure, press machine drive upper mold uplink, by formation of parts from sealing
It is taken out in device, clears up internal viscoelastoplastic material, obtain formation of parts；
Step 7: excision addendum: the process portion at formation of parts both ends is cut off, obtain hollow blade at
Product.
A kind of hollow blade viscoelastroplasticity soft mode internal pressure forming device of the invention, the forming device include sealing dress
It sets, upper die and lower die, sealing device includes fixed frame and two overflow valves, and fixed frame is four framework frames, fixed frame
The opposite framework of upper any two is equipped with stepped hole, and each stepped hole is followed successively by overflow valve mounting hole and cylinder base peace from outside to inside
Hole is filled, two stepped holes are symmetrical arranged relative to cylinder base, and each overflow valve mounting hole is provided with an overflow valve, upper die and lower die
It is separately positioned on the upper and lower side of a base, closo chamber is equipped between upper mold and lower die.
Compared with the prior art, the invention has the following beneficial effects:
One, the present invention uses viscoelastroplasticity flexible die forming method, shapes at room temperature, be used as by viscoelastoplastic material in
Portion's Supporting Media, due to viscoelastoplastic material be semisolid medium, under high pressure good fluidity, be easy sealing, be easy in cylinder base
High pressure is established in inside.Viscoelastroplasticity soft mode material has stronger sensitivity of strain rate, can establish on cylinder base surface non-equal
Even pressure field is adapted to a variation for base deformation process stress, and the adhesive attachment of sticky soft mode material and cylinder base interface
Stress can promote a blank material material to deformation large area flowing, improve the uniformity of formation of parts Thickness Distribution, avoid office
Portion's region transitions are thinned, and ensure that hollow blade forming quality.
Two, manufacturing process forming process of the invention is simple, and required pressure is smaller, of less demanding to former, needs
The parameter of control is few, and forming dimension precision is high, evenness of wall thickness is good.The present invention substantially reduces the forming of thin-walled hollow blade and is thinned
Rate, maximum reduction control is below 5%.
Detailed description of the invention
The structural front view of cylinder base 1 in the step of Fig. 1 is specific embodiment one one；
Fig. 2 is that hollow blade installs the cross-sectional view into sealing device 2；
Fig. 3 is the mould structure cross-sectional view of hollow blade viscoelastroplasticity flexible die forming original state；
Fig. 4 is the mould structure cross-sectional view of hollow blade viscoelastroplasticity flexible die forming intermediate state；
Fig. 5 is the structure sectional view of hollow blade viscoelastroplasticity flexible die forming mold closed condition.
Specific embodiment
Specific embodiment 1: illustrating present embodiment in conjunction with FIG. 1 to FIG. 5, present embodiment is through the following steps that reality
Existing:
Step 1: cylinder base 1 processed: circular cylinder base is made in Metal Sheet in Curling welding, the fixed section 1-2 at circular cylinder base both ends is added
Work is greater than blade section 1-1 among cylinder base at diameter, is changeover portion 1-3 between blade section 1-1 and fixed section 1-2, sees Fig. 1；
Step 2: cylinder base 1 is fitted into sealing device 2: cylinder base 1 being fitted into sealing device 2, folding base 1 is fixedly clamped；
Step 3: sealing device 2 is packed into press machine: the sealing device 2 for being equipped with a base 1 is installed on press machine, and
With upper mold 4 and lower die 5 to just, position；
Step 4: injection viscoelastoplastic material 3: injecting viscoelastoplastic material 3 into cylinder base 1, while passing through overflow valve 2-2
To the 1 inside pressurising of cylinder base, make to form certain internal pressure inside a base 1, the states of matter of viscoelastoplastic material 3 is semisolid；
Step 5: molding forming: starting press machine, press machine drive upper mold 4 with the speed downlink of 0.005m/s, and to cylinder
Base 1 and its whole load of internal viscoelastoplastic material 3, until upper mold 4 and lower die 5 are closed, cylinder base 1 is in viscoelastoplastic material 3
Under the action of pressure and upper mold 4, lower die 5, it is bonded forming with the type chamber of upper mold 4, lower die 5, sees Fig. 5；
Step 6: opening mold: removal formation of parts internal pressure, press machine drive 4 uplink of upper mold, by formation of parts from sealing
It is taken out in device 2, clears up internal viscoelastoplastic material 3, obtain formation of parts 6；
Step 7: excision addendum: by process portion (i.e. fixed section 1-2 and the changeover portion at 6 both ends of formation of parts
It 1-3) cuts off, obtains hollow blade finished product.
Specific embodiment 2: embodiment is described with reference to Fig. 1, present embodiment is the wall of the cylinder base 1 in step 1
Thickness is 0.15mm~1mm.Other steps are same as the specific embodiment one.
Specific embodiment 3: embodiment is described with reference to Fig. 1, present embodiment is the material of the cylinder base 1 in step 1
Matter is stainless steel, titanium alloy or high temperature alloy.Other steps are the same as one or two specific embodiments.
Specific embodiment 4: embodiment is described with reference to Fig. 1, present embodiment is 1 length of cylinder base in step 1
Range is 10mm~500mm, and the length of blade section 1-1 is L, and the length of fixing end 1-2 is S, and the length of changeover portion 1-3 is M, mistake
Crossing angle is φ, and the diameter of cylinder base 1 is calculated according to the principle with the perimeters such as formed hollow blade profile.Other steps and specific implementation
Mode three is identical.
Specific embodiment 5: embodiment is described with reference to Fig. 1, present embodiment is 1 length of cylinder base in step 1
Range is 300mm.Other steps are identical as specific embodiment four.
Specific embodiment 6: embodiment is described with reference to Fig. 3, present embodiment is in step 4 to inside cylinder base 1
Pressurising, pressure are 1MPa~3MPa.Other steps are identical as specific embodiment four or five.
Specific embodiment 7: embodiment is described with reference to Fig. 3, present embodiment is in step 4 to inside cylinder base 1
Pressurising, pressure 2MPa.Other steps are identical as specific embodiment six.
Specific embodiment 8: embodiment is described with reference to Fig. 3, present embodiment is the viscoelastroplasticity material in step 4
The molecular weight of material 3 is 400000g/mol~600000g/mol, the polyphosphazene polymer that viscosity is 10000Pas~16000Pas
Close object material.Other steps are identical as specific embodiment six or seven.
Specific embodiment 9: embodiment is described with reference to Fig. 3, present embodiment is the viscoelastroplasticity material in step 4
The molecular weight of material 3 is 500000g/mol, viscosity 12000Pas.Other steps are identical as specific embodiment eight.
Specific embodiment 10: it is in step 7 that embodiment is described with reference to Fig.5, present embodiment, which is in step 4,
Hollow blade maximum width T is 10mm~300mm.Other steps are identical as specific embodiment eight.
Specific embodiment 11: it is in step 7 that present embodiment that embodiment is described with reference to Fig.5, which is in step 4,
Hollow blade maximum width T be 150mm.Other steps are identical as specific embodiment ten.
Specific embodiment 12: embodiment is described with reference to Fig. 2, and present embodiment is viscous to implement a kind of hollow blade
Forming device used by elastoplasticity soft mode internal pressure manufacturing process, the forming device include sealing device 2, upper mold 4 and lower die 5,
It is four framework frames that sealing device 2, which includes fixed frame 2-1 and two overflow valve 2-2, fixed frame 2-1, on fixed frame 2-1
The opposite framework of any two is equipped with stepped hole, and each stepped hole is followed successively by overflow valve mounting hole 2-1-1 and cylinder from outside to inside
Base mounting hole 2-1-2, two stepped holes are symmetrical arranged relative to cylinder base 1, and each overflow valve mounting hole 2-1-1 is provided with one and overflows
Valve 2-2 is flowed, upper mold 4 and lower die 5 are separately positioned on the upper and lower side of a base 1, and closo chamber 7 is equipped between upper mold 4 and lower die 5.It is close
Seal apparatus 2 is for making a base 1 form closing inner chamber, and when the mold is closed, cylinder base 1 is bonded with type chamber 6；Overflow valve 2-2 is connected to leaf
Piece cavity inside and outside, when internal pressure is more than definite value, overflow valve 2-2 is opened, blade cavity viscous elastic-plastic medium
It is expelled to outside blade cavity by overflow valve 2-2；Blade cavity internal pressure is controlled by outer connected control system, control system
Control cavity inside pressure within the allowable range.
Claims (10)
1. a kind of hollow blade viscoelastroplasticity soft mode internal pressure manufacturing process, it is characterised in that: the manufacturing process is by following
What step was realized:
Step 1: cylinder base (1) processed: circular cylinder base is made in Metal Sheet in Curling welding, the fixed section (1-2) at circular cylinder base both ends is added
Work is greater than blade section (1-1) among cylinder base at diameter, is between blade section (1-1) and fixed section (1-2) changeover portion (1-3)；
Step 2: cylinder base (1) is fitted into sealing device (2): cylinder base (1) being fitted into sealing device (2), folding base (1) clamps solid
It is fixed；
Step 3: sealing device (2) is packed into press machine: the sealing device (2) for being equipped with a base (1) is installed on press machine,
And with upper mold (4) and lower die (5) to just, positioning；
Step 4: injection viscoelastoplastic material (3): injecting viscoelastoplastic material (3) into cylinder base (1), while passing through overflow valve
(2-2) makes to form certain internal pressure inside a base (1), the states of matter of viscoelastoplastic material (3) is half to the internal pressurising of cylinder base (1)
Solid-state；
Step 5: molding forming: starting press machine, press machine drive upper mold (4) with the speed downlink of 0.005m/s, and to cylinder base
(1) it is integrally loaded with its internal viscoelastoplastic material (3), until upper mold (4) and lower die (5) are closed, cylinder base (1) is in viscoelastroplasticity
Under the action of the pressure and upper mold (4) of material (3), lower die (5), forming is bonded with the type chamber of upper mold (4), lower die (5)；
Step 6: opening mold: removal formation of parts internal pressure, press machine drive upper mold (4) uplink, and formation of parts is filled from sealing
It sets in (2) and takes out, clear up internal viscoelastoplastic material (3), obtain formation of parts (6)；
Step 7: excision addendum: the process portion at formation of parts (6) both ends being cut off, hollow blade finished product is obtained.
2. a kind of hollow blade viscoelastroplasticity soft mode internal pressure manufacturing process according to claim 1, it is characterised in that: described
The wall thickness of cylinder base (1) in step 1 is 0.15mm~1mm.
3. a kind of hollow blade viscoelastroplasticity soft mode internal pressure manufacturing process according to claim 1 or 2, it is characterised in that:
The material of cylinder base (1) in the step 1 is stainless steel, titanium alloy or high temperature alloy.
4. a kind of hollow blade viscoelastroplasticity soft mode internal pressure manufacturing process according to claim 3, it is characterised in that: described
Cylinder base (1) length range in step 1 is 10mm~500mm, and the length of blade section (1-1) is L, the length of fixing end (1-2)
For S, the length of changeover portion (1-3) is M, and transition angle is φ.
5. a kind of hollow blade viscoelastroplasticity soft mode internal pressure manufacturing process according to claim 4, it is characterised in that: described
Cylinder base (1) length in step 1 is 300mm.
6. a kind of hollow blade viscoelastroplasticity soft mode internal pressure manufacturing process according to claim 4 or 5, it is characterised in that:
To the internal pressurising of cylinder base (1) in the step 4, pressure is 1MPa~3MPa.
7. a kind of hollow blade viscoelastroplasticity soft mode internal pressure manufacturing process according to claim 6, it is characterised in that: described
To the internal pressurising of cylinder base (1), pressure 2MPa in step 4.
8. a kind of hollow blade viscoelastroplasticity soft mode internal pressure manufacturing process according to claim 7, it is characterised in that: described
The molecular weight of viscoelastoplastic material (3) in step 4 is 400000g/mol~600000g/mol, viscosity 10000Pas
The macromolecule polymer material of~16000Pas.
9. a kind of hollow blade viscoelastroplasticity soft mode internal pressure manufacturing process according to claim 8, it is characterised in that: described
Hollow blade maximum width T in step 7 is 10mm~300mm.
10. a kind of a kind of forming device for the hollow blade viscoelastroplasticity soft mode internal pressure manufacturing process for implementing claim 1, special
Sign is: the forming device includes sealing device (2), upper mold (4) and lower die (5), and sealing device (2) includes fixed frame
(2-1) and two overflow valves (2-2), fixed frame (2-1) are four framework frames, and any two are opposite on fixed frame (2-1)
Framework be equipped with stepped hole, each stepped hole is followed successively by overflow valve mounting hole (2-1-1) and cylinder base mounting hole (2- from outside to inside
1-2), two stepped holes are symmetrical arranged relative to cylinder base (1), and each overflow valve mounting hole (2-1-1) is provided with an overflow valve
(2-2), upper mold (4) and lower die (5) are separately positioned on the upper and lower side of a base (1), and closure is equipped between upper mold (4) and lower die (5)
Type chamber (7).
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| CN201610815107.0A CN106270093B (en) | 2016-09-09 | 2016-09-09 | A kind of hollow blade viscoelastroplasticity soft mode internal pressure manufacturing process and forming device |
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| CN106270093B true CN106270093B (en) | 2019-04-16 |
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| CN109759493B (en) * | 2019-02-03 | 2019-11-01 | 哈尔滨工业大学 | A kind of difficult-to-deformation material closing variable cross-section thin-wall part viscous pressure forming method |
| CN111112431B (en) * | 2019-12-20 | 2022-01-04 | 中国航发南方工业有限公司 | Method for liquid-filled extrusion forming and blade obtained thereby |
| CN111673397B (en) * | 2020-04-30 | 2022-01-04 | 中国航发南方工业有限公司 | Forming process of wide chord hollow blade |
| CN112045025B (en) * | 2020-06-30 | 2022-09-16 | 中国航发南方工业有限公司 | Hydraulic bulging processing die and hydraulic bulging processing method for flange type casing outer cover |
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| JPS5596396A (en) * | 1979-01-17 | 1980-07-22 | Hitachi Ltd | Manufacturing method of wing-shaped blade |
| CN101885018A (en) * | 2010-07-27 | 2010-11-17 | 哈尔滨工业大学 | Viscoelasto-plastic soft mode forming method of minor-radius corrugated surface thin-wall metal barrel part |
| CN103273644A (en) * | 2013-06-20 | 2013-09-04 | 哈尔滨工业大学 | Plank soft mode forming device and method based on magnetorheological elastomers |
| WO2016090405A1 (en) * | 2014-12-08 | 2016-06-16 | Peter John Murdoch | A method of forming a fibre metal composite component |
| CN106216479A (en) * | 2014-04-22 | 2016-12-14 | 李明 | A kind of manufacturing process of hollow unit |
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2016
- 2016-09-09 CN CN201610815107.0A patent/CN106270093B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5596396A (en) * | 1979-01-17 | 1980-07-22 | Hitachi Ltd | Manufacturing method of wing-shaped blade |
| CN101885018A (en) * | 2010-07-27 | 2010-11-17 | 哈尔滨工业大学 | Viscoelasto-plastic soft mode forming method of minor-radius corrugated surface thin-wall metal barrel part |
| CN103273644A (en) * | 2013-06-20 | 2013-09-04 | 哈尔滨工业大学 | Plank soft mode forming device and method based on magnetorheological elastomers |
| CN106216479A (en) * | 2014-04-22 | 2016-12-14 | 李明 | A kind of manufacturing process of hollow unit |
| WO2016090405A1 (en) * | 2014-12-08 | 2016-06-16 | Peter John Murdoch | A method of forming a fibre metal composite component |
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