CN107755511A - A kind of swelling pressure combined shaping method for thin-walled parts roundlet corner characteristics - Google Patents
A kind of swelling pressure combined shaping method for thin-walled parts roundlet corner characteristics Download PDFInfo
- Publication number
- CN107755511A CN107755511A CN201610689208.8A CN201610689208A CN107755511A CN 107755511 A CN107755511 A CN 107755511A CN 201610689208 A CN201610689208 A CN 201610689208A CN 107755511 A CN107755511 A CN 107755511A
- Authority
- CN
- China
- Prior art keywords
- liquid room
- roundlet
- pressure
- liquid
- corner characteristics
- Prior art date
- 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.)
- Pending
Links
Classifications
-
- 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
-
- 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
Abstract
A kind of swelling pressure combined shaping method for thin-walled parts roundlet corner characteristics, it is mainly used to the technical problem for solving big, the accurate forming difficulty of liquid chamber pressure needed for hydroforming roundlet corner characteristics.Including preform and whole shaping twice time hydroforming process, passive type hydro-mechanical drawing is pre-formed into, the height of formation of parts is slightly above final actual parts；Preform fillet is also greater than final small round corner.Swelling pressure combined shaping is configured to eventually, by preform part upside down, it is highly pressurised liquid below part, it is the punch-pin with final roundlet corner characteristics above, forming process punch-pin is descending while liquid room is pressurizeed, and small round corner swelling pressure under the matching effect of liquid room bulging pressure and punch-pin back pressure speed, which shapes, to be come.Make that small round corner Thickness Distribution formed thereby is uniform, surface quality is good, forming accuracy is high.The it is proposed of the invention has greatly widened Hydroforming and can shape the scope of plate material parts fillet and the application of Hydroforming, has broad prospects.
Description
Technical field
It is special for thin-walled parts small round corner more particularly to one kind the invention belongs to aviation aerospace Sheet Metal Forming Technology field
The swelling pressure combined shaping method of sign.
Background technology
With the continuous development of national strategy demand and advanced manufacturing technology, increasing product will be in extreme condition
Lower operation, such as Chinese first lunar rover " Jade Hare number ", moonscape vacuum, intense radiation, subzero 180 degree Celsius is subjected to above freezing
The extreme environments such as 150 degree of limiting temperatures.In this case, it is desirable to which product has a very high workmanship, while product is answered
Also more and more higher, some abnormal curved surfaces, the thin-walled parts with local roundlet corner characteristics are widely used miscellaneous degree.Wherein roundlet
Thickness is often expected for only 1-3 times in angle, and smaller even less than 1 times of material is thick, and formation of parts surface quality requirements are very high, must not have and appoint
What is scratched, and part material widely uses alloy in lightweight, and these further increase manufacture difficulty, are brought to figuration manufacture larger
It is difficult.
The method of tradition shaping roundlet corner characteristics has conventional rigid contour forming and inner high voltage filling shaping (i.e. hydroforming),
Rigid contour forming easily is caused to scratch to piece surface, and the mould frictional force larger in small round corner straight wall area can be led in shaping
Straight wall is caused acutely even to be ftractureed with blank wall thickness reduction at round-corner transition, to ensure that test specimen wall thickness reduction need to carry out multi-pass
Shaping and trimming.The filling shaping of inner high voltage fillet, though protective effect well is played to piece surface, small round corner patch mould
Required local hydraulic coupling is far longer than other regions, and this will cause whole liquid chamber pressure increase, equipment tonnage increase.And
Under very big liquid chamber pressure, the vertical wall section that mould has been pasted in fillet both sides is difficult to fillet area feed supplement, can only lean on fillet area blank certainly
The wall thickness reduction of body reclines mould, and wall thickness excessive thinning easily occurs and even ruptures, it is difficult to meet figuration manufacture requirement.Therefore,
How roundlet corner characteristics are precisely shaped as a key issue in the shaping of complicated shape thin-wall member.
The content of the invention
In order to solve the above problems, it is an object of the invention to overcome prior art insufficient, there is provided one kind is directed to thin-walled zero
The swelling pressure combined shaping method of part roundlet corner characteristics.
In order to achieve the above object, the swelling pressure combined shaping method provided by the invention for thin-walled parts roundlet corner characteristics
Including the following steps carried out in order：
1) piece pre-forming die is arranged in sheet material liquid-filling shaping equipment, after the completion of debugging, passes through piece pre-forming die liquid room
On inlet into piece pre-forming die liquid room quick topping up, to liquid not from the rounded edges overflow of liquid room.
2) thin-wall boards are selected blank to be placed on piece pre-forming die liquid room, positioned by positioner as blank,
Blank holder is descending, ensures the gap between preform blank holder and preform liquid room by the limited block on piece pre-forming die.
3) behind punch-pin fast downlink to blank upper surface, continued traveling downwardly by setting speed, while pass through the feed liquor on liquid room
Mouth loads hydraulic coupling into piece pre-forming die liquid room, and sheet material carries out hydro-mechanical drawing under fluid pressure effect, and elastoplasticity occurs and becomes
Shape, recline punch-pin, shapes preforming shape.
4) preform part is taken out from piece pre-forming die, whole shaping dies and fast into whole shaping dies liquid room is installed
Fast topping up is to liquid not from the rounded edges overflow of liquid room.
5) preform part is inverted into whole shaping dies, positioned by positioner, be high pressure liquid below part
Body, it is the whole forming terrace die with final roundlet corner characteristics above.Sealing ring is arranged on the outside of part flange periphery, prevents liquid
Leakage, keep liquid chamber pressure.The descending matched moulds of blank holder, preform part flange section is pressed on by liquid room by kiss gating-feeder
On.
6) after whole forming terrace die fast downlink to rigid connection touches preform part upper surface, continued traveling downwardly with setting speed to one
Positioning is put, while hydraulic pressure, part small round corner are loaded into whole shaping dies liquid room by the inlet on whole shaping dies liquid room
Swelling pressure, which shapes, under the matching effect of liquid room bulging pressure and punch-pin back pressure speed comes.
7) pressure releasing die sinking, by the part taking-up eventually with roundlet corner characteristics, unnecessary process complementary surface is cut off, is obtained complete
Part.
Described piece pre-forming die is made up of punch-pin, blank holder, liquid room and limited block.Wherein preform punch-pin is with zero
Part type face, below sheet material, forming process is passive type hydro-mechanical drawing for liquid room.Preform part height slightly above final actual zero
Part, final small round corner of the preform fillet also greater than required shaping.
Described whole shaping dies is made up of punch-pin, blank holder, liquid room and sealing ring.Wherein, sealing ring be arranged in advance into
On the outside of shape part flange periphery, liquid leakage is prevented, keeps liquid chamber pressure.Roundlet corner characteristics are then carried on the back by liquid chamber pressure and punch-pin
Pressure speeds match control is formed.
A kind of swelling pressure combined shaping method for thin-walled parts roundlet corner characteristics provided by the invention, using twice not good liquor
Pressing formation process, is pre-formed into passive type hydro-mechanical drawing, is configured to active hydraulic expanding-forming eventually and combines rigid back pressure.This method can
To give full play to the plasticity of material, make that the small round corner Thickness Distribution of shaping is uniform, surface quality is good, forming accuracy is high.Shaped
Journey process is simple, efficiency high, cost is low, is suitable for producing in enormous quantities.Meanwhile the proposition of the invention greatly widened hydraulic pressure into
Shape technology can shape the scope of plate material parts fillet and the application of Hydroforming, have broad prospects.
Brief description of the drawings
Fig. 1 is that the swelling pressure combined shaping method performing process provided by the invention for thin-walled parts roundlet corner characteristics shows
It is intended to.
Fig. 2 is that the swelling pressure combined shaping method provided by the invention for thin-walled parts roundlet corner characteristics shapes rank at initial stage eventually
Section schematic diagram.
Fig. 3 is that the swelling pressure combined shaping method provided by the invention for thin-walled parts roundlet corner characteristics shapes later stage rank eventually
Section schematic diagram.
Fig. 4 be the swelling pressure combined shaping method preform height provided by the invention for thin-walled parts roundlet corner characteristics and
Relation schematic diagram between fillet and whole forming height and fillet.
In figure：1 piece pre-forming die punch-pin；2 piece pre-forming die blank holders；3 piece pre-forming die liquid rooms；4 piece pre-forming die liquid
Room inlet；5 initial sheet material blanks；6 preform part shapes；7 piece pre-forming die limited blocks；8 whole shaping dies punch-pin；9 eventually
Shaping dies blank holder；10 whole shaping dies liquid rooms；11 whole shaping dies liquid room inlets；12 whole shaping dies sealing rings；13
Eventually with the part of roundlet corner characteristics；14 preform part heights；15 preform part fillets；16 final parts height；17
Final part roundlet corner characteristics.
Embodiment
The swelling pressure provided by the invention for thin-walled parts roundlet corner characteristics is combined into reference to the accompanying drawings and examples
Shape method is described in detail.
As shown in Fig. 1-Fig. 4, a kind of swelling pressure combined shaping side for thin-walled parts roundlet corner characteristics provided by the invention
Method includes the following steps carried out in sequence：
1) after piece pre-forming die installation, quickly filled into piece pre-forming die liquid room 3 by the inlet 4 on liquid room 3
Liquid, to liquid not from the rounded edges overflow of liquid room.
2) sheet material 5 of aluminium alloy 2024 for selecting 1.5mm thick is used as blank, and blank 5 is placed on into piece pre-forming die liquid room 3
On, positioned by positioner, blank holder 2 is descending, ensures preform blank holder 2 by the limited block 7 on piece pre-forming die
The sheet thickness that gap between preform liquid room 3 is 1.1 times；
3) punch-pin 1 is descending by setting speed, while is loaded by the inlet 4 on liquid room 3 into piece pre-forming die liquid room
Hydraulic coupling, sheet material recline punch-pin 1 under highly pressurised liquid effect, elastic-plastic deformation occur, shapes preforming shape 6.
4) plate material parts 6 are taken out from piece pre-forming die, whole shaping dies is installed and into whole shaping dies liquid room 10
Quick topping up is to liquid not from the rounded edges overflow of liquid room 10.
5) preform part 6 is inverted into whole shaping dies, positioned by positioner, be high pressure liquid below part
Body, it is the whole forming terrace die 8 with final roundlet corner characteristics above.9 descending matched moulds of blank holder, application 600kN pressure-pad-forces, sealing
The flange section of preform part 6 is pressed on liquid room 10 by the sealing of circle 12, pressure-pad-force.
6) after the whole fast downlink of forming terrace die 8 to rigid connection touches the upper surface of preform part 6, with setting speed continue traveling downwardly to
Certain position, while hydraulic pressure, part are loaded into whole shaping dies liquid room by the inlet 11 on whole shaping dies liquid room 10
Small round corner swelling pressure under the matching effect of liquid room bulging pressure and punch-pin back pressure speed, which shapes, to be come.
7) pressure releasing die sinking, the part 13 eventually with roundlet corner characteristics is taken out, unnecessary process complementary surface is cut off, has obtained
Whole part.
Claims (5)
- A kind of 1. swelling pressure combined shaping method for thin-walled parts roundlet corner characteristics, it is characterised in that：Described is directed to thin-walled The swelling pressure combined shaping method of part roundlet corner characteristics includes the following steps carried out in order：1) after piece pre-forming die installation, by the inlet 4 on liquid room 3 into piece pre-forming die liquid room 3 quick topping up, extremely Liquid is not from the rounded edges overflow of liquid room.2) selection thin-wall boards 5 are used as blank, and blank 5 is placed on piece pre-forming die liquid room 3, positioned by positioner, Blank holder 2 is descending, between ensureing by the limited block 7 on piece pre-forming die between preform blank holder 2 and preform liquid room 3 Gap.3) punch-pin 1 is descending by setting speed, while loads hydraulic pressure into piece pre-forming die liquid room by the inlet 4 on liquid room 3 Power, sheet material recline punch-pin 1 under highly pressurised liquid effect, elastic-plastic deformation occur, shapes preforming shape 6.4) plate material parts 6 are taken out from piece pre-forming die, whole shaping dies and quick into whole shaping dies liquid room 10 is installed Topping up is to liquid not from the rounded edges overflow of liquid room 10.5) preform part 6 is inverted into whole shaping dies, positioned by positioner, be highly pressurised liquid below part, It is the whole forming terrace die 8 with final roundlet corner characteristics above.9 descending matched moulds of blank holder, sealing ring 12 seal, and pressure-pad-force will be pre- The flange section of formation of parts 6 is pressed on liquid room 10.6) after the whole fast downlink of forming terrace die 8 to rigid connection touches the upper surface of preform part 6, continued traveling downwardly with setting speed to certain Position, while hydraulic pressure, part roundlet are loaded into whole shaping dies liquid room by the inlet 11 on whole shaping dies liquid room 10 Angle swelling pressure under the matching effect of liquid room bulging pressure and punch-pin back pressure speed, which shapes, to be come.7) pressure releasing die sinking, the part 13 eventually with roundlet corner characteristics is taken out, unnecessary process complementary surface is cut off, obtains complete zero Part.
- 2. a kind of swelling pressure combined shaping method for thin-walled parts roundlet corner characteristics according to claim 1, its feature It is：Preform is highly slightly above final actual parts, and preform fillet is more than the small round corner of final actual parts.
- 3. a kind of swelling pressure combined shaping method for thin-walled parts roundlet corner characteristics according to claim 1, its feature It is：Eventually during shaping, liquid room bulging pressure needs match control with punch-pin back pressure speed, and part roundlet corner characteristics are in the matching effect Lower swelling pressure, which shapes, to be come.
- 4. a kind of swelling pressure combined shaping method for thin-walled parts roundlet corner characteristics according to claim 1, its feature It is：The manufacturing process is twice time hydroforming, is pre-formed into passive type hydro-mechanical drawing, is configured to active hydraulic expanding-forming eventually With reference to rigid back pressure.
- 5. a kind of swelling pressure combined shaping method for thin-walled parts roundlet corner characteristics according to claim 1, its feature It is：Solve the problems, such as that equipment tonnage needed for hydroforming roundlet corner characteristics is big.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610689208.8A CN107755511A (en) | 2016-08-19 | 2016-08-19 | A kind of swelling pressure combined shaping method for thin-walled parts roundlet corner characteristics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610689208.8A CN107755511A (en) | 2016-08-19 | 2016-08-19 | A kind of swelling pressure combined shaping method for thin-walled parts roundlet corner characteristics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107755511A true CN107755511A (en) | 2018-03-06 |
Family
ID=61261797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610689208.8A Pending CN107755511A (en) | 2016-08-19 | 2016-08-19 | A kind of swelling pressure combined shaping method for thin-walled parts roundlet corner characteristics |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107755511A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107214232A (en) * | 2017-07-05 | 2017-09-29 | 天津天锻航空科技有限公司 | A kind of processing technology of the aluminium alloy sheet part with roundlet corner characteristics |
| CN110434217A (en) * | 2019-08-29 | 2019-11-12 | 北京航空航天大学 | A method of improving the anti-inflation height in part in complex thin-walled member liquid-filling shaping |
| CN110434216A (en) * | 2019-08-29 | 2019-11-12 | 北京航空航天大学 | A kind of large-sized annular lip part entirety liquid-filling shaping method |
| CN111112430A (en) * | 2019-12-16 | 2020-05-08 | 中国航发南方工业有限公司 | Composite compensation springback forming method for revolving body parts |
| CN112872160A (en) * | 2020-12-30 | 2021-06-01 | 南京晨光东螺波纹管有限公司 | Large-caliber rectangular corrugated pipe bulging die and using method thereof |
| CN113020392A (en) * | 2021-03-04 | 2021-06-25 | 北京航空航天大学 | Fluid medium forming die and multi-pass forming method for high-temperature alloy complex thin-wall part |
| CN113523148A (en) * | 2021-07-27 | 2021-10-22 | 中航西安飞机工业集团股份有限公司 | Forming method of complex double-curvature skin part |
| CN117483533A (en) * | 2024-01-03 | 2024-02-02 | 天津天锻航空科技有限公司 | Forming method of airplane oil transportation half pipe parts |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56144837A (en) * | 1980-04-15 | 1981-11-11 | Dainippon Printing Co Ltd | Method and device for production of thin-walled metallic vessel |
| DE69500933T2 (en) * | 1994-01-21 | 1998-06-18 | Lorraine Laminage | Device for deep drawing a sheet metal blank |
| EP1136149A2 (en) * | 2000-03-23 | 2001-09-26 | Araco Kabushiki Kaisha | Sheet metal formed with spaced projections and manufacturing method of the same |
| DE10028804A1 (en) * | 2000-06-15 | 2001-12-20 | Schuler Smg Gmbh & Co Kg | Hydro-forming of sheet with forming press halts punch once to raise medium pressure and then re-set with sheetholder force reduced during punch movement. |
| CN102248066A (en) * | 2011-06-09 | 2011-11-23 | 北京航空航天大学 | Drawing and hydraulic integrated forming method |
| CN102284588A (en) * | 2011-06-13 | 2011-12-21 | 北京航空航天大学 | Device for improving forming limit of plate |
| CN102873165A (en) * | 2012-09-03 | 2013-01-16 | 北京航空航天大学 | Shock hydraulic composite forming process for small feature part of complex part |
| CN103846331A (en) * | 2014-03-27 | 2014-06-11 | 北京航空航天大学 | Bidirectional pressing liquid-charging forming method for large-size thin-wall complex characteristic panel |
| CN104607524A (en) * | 2014-12-31 | 2015-05-13 | 哈尔滨工业大学 | Tailor welded blank integral drawing forming device and method for large-scale curved surface part |
| CN105710256A (en) * | 2016-03-18 | 2016-06-29 | 燕山大学 | Forming method for aluminum alloy wallboards of high-speed trains |
-
2016
- 2016-08-19 CN CN201610689208.8A patent/CN107755511A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56144837A (en) * | 1980-04-15 | 1981-11-11 | Dainippon Printing Co Ltd | Method and device for production of thin-walled metallic vessel |
| DE69500933T2 (en) * | 1994-01-21 | 1998-06-18 | Lorraine Laminage | Device for deep drawing a sheet metal blank |
| EP1136149A2 (en) * | 2000-03-23 | 2001-09-26 | Araco Kabushiki Kaisha | Sheet metal formed with spaced projections and manufacturing method of the same |
| DE10028804A1 (en) * | 2000-06-15 | 2001-12-20 | Schuler Smg Gmbh & Co Kg | Hydro-forming of sheet with forming press halts punch once to raise medium pressure and then re-set with sheetholder force reduced during punch movement. |
| CN102248066A (en) * | 2011-06-09 | 2011-11-23 | 北京航空航天大学 | Drawing and hydraulic integrated forming method |
| CN102284588A (en) * | 2011-06-13 | 2011-12-21 | 北京航空航天大学 | Device for improving forming limit of plate |
| CN102873165A (en) * | 2012-09-03 | 2013-01-16 | 北京航空航天大学 | Shock hydraulic composite forming process for small feature part of complex part |
| CN103846331A (en) * | 2014-03-27 | 2014-06-11 | 北京航空航天大学 | Bidirectional pressing liquid-charging forming method for large-size thin-wall complex characteristic panel |
| CN104607524A (en) * | 2014-12-31 | 2015-05-13 | 哈尔滨工业大学 | Tailor welded blank integral drawing forming device and method for large-scale curved surface part |
| CN105710256A (en) * | 2016-03-18 | 2016-06-29 | 燕山大学 | Forming method for aluminum alloy wallboards of high-speed trains |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107214232A (en) * | 2017-07-05 | 2017-09-29 | 天津天锻航空科技有限公司 | A kind of processing technology of the aluminium alloy sheet part with roundlet corner characteristics |
| CN110434217A (en) * | 2019-08-29 | 2019-11-12 | 北京航空航天大学 | A method of improving the anti-inflation height in part in complex thin-walled member liquid-filling shaping |
| CN110434216A (en) * | 2019-08-29 | 2019-11-12 | 北京航空航天大学 | A kind of large-sized annular lip part entirety liquid-filling shaping method |
| CN111112430A (en) * | 2019-12-16 | 2020-05-08 | 中国航发南方工业有限公司 | Composite compensation springback forming method for revolving body parts |
| CN111112430B (en) * | 2019-12-16 | 2022-01-04 | 中国航发南方工业有限公司 | Composite compensation springback forming method for revolving body parts |
| CN112872160A (en) * | 2020-12-30 | 2021-06-01 | 南京晨光东螺波纹管有限公司 | Large-caliber rectangular corrugated pipe bulging die and using method thereof |
| CN113020392A (en) * | 2021-03-04 | 2021-06-25 | 北京航空航天大学 | Fluid medium forming die and multi-pass forming method for high-temperature alloy complex thin-wall part |
| CN113523148A (en) * | 2021-07-27 | 2021-10-22 | 中航西安飞机工业集团股份有限公司 | Forming method of complex double-curvature skin part |
| CN113523148B (en) * | 2021-07-27 | 2023-06-23 | 中航西安飞机工业集团股份有限公司 | Complex double-curvature skin part forming method |
| CN117483533A (en) * | 2024-01-03 | 2024-02-02 | 天津天锻航空科技有限公司 | Forming method of airplane oil transportation half pipe parts |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107755511A (en) | A kind of swelling pressure combined shaping method for thin-walled parts roundlet corner characteristics | |
| CN105537362B (en) | A kind of device and method for reducing large size plate component hydro-mechanical drawing power | |
| CN102921790B (en) | Sheet material hydro-mechanical deep drawing forming device and method using magnetic medium to pressurize | |
| CN111408660B (en) | Flange-free edge forming method of thin-wall metal sheet metal component | |
| CN107617664B (en) | Rigid-flexible composite forming process for large complex multi-characteristic plate part | |
| CN104259369B (en) | Large-scale nuclear reactor water chamber head forging monolithic molding forging press and method | |
| CN105689486B (en) | A kind of inside high-pressure forming method and device of multistage continuous large deformation part | |
| CN107252866B (en) | The multiple protrusion ozzle large-sized end enclosure forging integral forging and forming methods of nuclear reactor band | |
| CN106624666B (en) | A kind of manufacturing method of the integral panel with thin-walled superelevation reinforcing rib | |
| CN102554040A (en) | Magnesium alloy sheet different temperature drawing mold | |
| CN109692911B (en) | Integral forming device and method for large-scale ring shell part | |
| CN102284588A (en) | Device for improving forming limit of plate | |
| CN105328020A (en) | Stamping tool for front ring in flame tube and working method of stamping tool | |
| CN209811205U (en) | Liquid forging die device of vortex disk blank for automobile air conditioner compressor | |
| CN104607526B (en) | Intra-pipe high pressure forming system | |
| CN113523148B (en) | Complex double-curvature skin part forming method | |
| CN110014065A (en) | A kind of composite forming die and method of half tube components of wall buckling of dehiscing | |
| CN110434217B (en) | Method for improving local anti-swelling height of complex thin-wall part in hydroforming | |
| CN109127851A (en) | A kind of manufacturing process based on hydraulic aluminium alloy sheet part | |
| Yao et al. | Design of an innovative multi-stage forming process for a complex aeronautical thin-walled part with very small radii | |
| CN114472664A (en) | Ultrathin metal sheet forming method and mold | |
| CN101234405B (en) | Forward and reverse superplastic bulging method capable of changing friction condition | |
| CN204052605U (en) | Before in burner inner liner, punch forming frock used by circle | |
| CN111482515B (en) | High-strength aluminum alloy cylindrical deep-drawing part die and matched extrusion-drawing-quenching process | |
| CN204220724U (en) | A kind of push rod and the box-like metal creep forming die of shim pack |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180306 |