CN109759493B - A kind of difficult-to-deformation material closing variable cross-section thin-wall part viscous pressure forming method - Google Patents
A kind of difficult-to-deformation material closing variable cross-section thin-wall part viscous pressure forming method Download PDFInfo
- Publication number
- CN109759493B CN109759493B CN201910108893.4A CN201910108893A CN109759493B CN 109759493 B CN109759493 B CN 109759493B CN 201910108893 A CN201910108893 A CN 201910108893A CN 109759493 B CN109759493 B CN 109759493B
- Authority
- CN
- China
- Prior art keywords
- cylinder base
- difficult
- variable cross
- deformation
- pattern
- 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.)
- Active
Links
Abstract
The present invention relates to the difficult deformation thin-wall part technologies of aerospace, more particularly to a kind of difficult-to-deformation material closes variable cross-section thin-wall part viscous pressure forming method, method mainly includes production cylinder base, installs four steps such as cylinder base, the sticky soft mode material forming of plunger load and die sinking pickup additional.This method implements viscous pressure forming for the high-intensitive mat material of difficult processing or difficult deformation, the Deformation Flow for promoting plate by resisting medium pressure non-uniform Distribution in viscous pressure forming and adhesive attachment stress, supplements local deformation large area material.Forming of the method to closing variable cross-section local curvature mutation component, there is uniform dimensional accuracy height, Thickness Distribution, overall structure, high reliablity and adhesive attachment stress to improve the advantages such as sheet material forming.
Description
Technical field
The present invention relates to aerospaces to close variable cross-section with difficult deformation thin-wall part technology more particularly to a kind of difficult-to-deformation material
Thin-wall part viscous pressure forming method.
Background technique
Closing variable cross-section local curvature mutation thin-wall part is a kind of typical abnormal curved surface shell knot in aerospace field
Component, outstanding feature be regional area there are curvature mutation (area change rate up to 120% or more), and curvature mutation
Place is closed cross sectional structure, and local deformation is larger, and material is difficult to obtain supplement, and when this kind of part forming easily occurs locally tight
The defects of being thinned again, even rupturing or wrinkle.At present for the figuration manufacture of such part, common punching press or heat are mostly used greatly
The methods of punching press is shaped out local surface, is then combined welding.The closing variable cross-section local curvature of these methods forming
Mutation component is easy to produce that deformation, dimensional accuracy be low, poor reliability, and the overall performance of part is difficult to be guaranteed.
Summary of the invention
The technical problem to be solved in the present invention is that present in existing closing variable cross-section local curvature mutation component forming
The problems such as local excessive is thinned, ruptures, dimensional accuracy is low and poor reliability, for the defects in the prior art, provides one kind
Difficult-to-deformation material closes variable cross-section thin-wall part viscous pressure forming method.
For the purpose for realizing the invention, provide a kind of difficult-to-deformation material closing variable cross-section thin-wall part resisting medium pressure at
Shape method, method the following steps are included:
Step 1: production cylinder base, selects suitable dimension according to the design feature of closing variable cross-section local curvature mutation component
Cylinder base, the thin wall cylinder base for rolling and being welded using seamless thin wall cylinder or plate blank material；
Step 2: cylinder base is fitted into shaping dies, the pattern of splitted structure is placed in sleeve, cylinder base is packed into pattern
In, locating piece fixed cylinder base is installed；
Step 3: forming process, under the action of loading force, loading sticky soft mode material by plunger makes it be injected into a base
Inside, sticky soft mode material effects to cylinder base generate pressure P on the surface of cylinder base and tangential adhesive attachment stress τ, pressure P are non-
It is uniformly distributed, deforms size with cylinder base and change, while under the action of the tangential adhesive attachment stress τ in surface, drive cylinder blank material
Expect to flow at pattern curvature mutation, final cylinder base is gradually bonded with pattern；
Step 4: opening mold, takes out formation of parts, completes a forming process.
Implement technical solution of the present invention, has the advantages that
One, the present invention is by sticky soft mode as power transmission medium shaped closure variable cross-section curvature mutation constitutional detail, viscosity
Soft mode can generate pressure P and tangential adhesive attachment stress τ on cylinder base surface simultaneously.On the one hand, pressure P non-uniform Distribution is big
It is small related to the deformation of cylinder base, the tangential adhesive attachment stress τ that sticky soft mode and cylinder base contact interface generate can drive plate to
The flowing of type chamber, supplements curvature mutation region material, and tangential adhesive attachment stress τ can cause plate thickness to be answered to shearing
Power increases, and constriction is concentrated in delay, and deformation is promoted, with external expansion, to reduce Wall-Thickness Difference to constriction, improves plate and answers distributing homogeneity
And formability, disposably shape curvature mutation closed cross-section member.
Two, the closing variable cross-section curvature mutation element surface quality that the present invention shapes is good, and evenness of wall thickness is good, dimensional accuracy
It is high.
Three, forming die structure of the present invention is simple, and forming process link is few, disposably shapes overall structure part, at
Form quality amount stabilization, high reliablity, manufacturing cost are low.
Detailed description of the invention
Fig. 1 is the schematic diagram for closing variable cross-section curvature mutation component；
Fig. 2 is the A-A cross-sectional view of Fig. 1；
Fig. 3 is that a base is packed into mold rear mold and Components Shape schematic diagram；
Fig. 4 is the B-B cross-sectional view of Fig. 3；
Fig. 5 is forming initial stage mold and component schematic diagram；
Fig. 6 is forming intermediate stage mold and component schematic diagram；
Fig. 7 is the C-C cross-sectional view of Fig. 6；
Fig. 8 is forming end state mold and component schematic diagram.
In figure: 1, pattern；1-1, pattern body；1-2, insert；2, locating piece；2-1, upper locating piece；2-2, lower locating piece；3,
Plunger；4, cylinder base；5, sticky soft mode material；6, YX type sealing ring；7, sleeve.
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.
One, it inventive principle: is answered by resisting medium pressure non-uniform Distribution and adhesive attachment in viscous pressure forming
Make every effort to promote the Deformation Flow into plate, supplement local deformation large area material, and then a kind of difficult-to-deformation material envelope is provided
Close variable cross-section thin-wall part viscous pressure forming method.
Two, embodiment
Referring to Fig. 1-Fig. 8, a kind of difficult-to-deformation material closing variable cross-section thin-wall part viscous pressure forming method, method packet
Include following steps:
Step 1: production cylinder base 4, selects suitable dimension according to the design feature of closing variable cross-section local curvature mutation component
Cylinder base 4, the thin wall cylinder base for rolling and being welded using seamless thin wall cylinder or plate blank material.
Step 2: cylinder base 4 is fitted into shaping dies, the pattern 1 of splitted structure is placed in sleeve 7, by 4 embedded type of cylinder base
In mould 1,2 fixed cylinder base 4 of locating piece is installed.
Step 3: forming process, under the action of loading force, loading sticky soft mode material 5 by plunger 3 makes it be injected into cylinder
Inside base 4, sticky soft mode material 5 is applied to a base 4, generates pressure P and tangential adhesive attachment stress τ, pressure on the surface of cylinder base 4
Power P non-uniform Distribution deforms size with cylinder base 4 and changes, while under the action of the tangential adhesive attachment stress τ in surface, driving
Cylinder 4 material of base is gradually bonded with pattern 1 to flowing at 1 curvature mutation of pattern, final cylinder base 4.
In the step, due to the presence of tangential adhesive attachment stress τ, plate thickness is increased to shear stress, postpones constriction,
Improve evenness of wall thickness and Forming Limit of Sheet Metals.
Referring to Fig. 5, Fig. 6 and Fig. 8, the gap delta L between cylinder base 4 and upper locating piece 2-1 and lower locating piece 2-2 is by δ L1- δ
L2- δ L3 gradual change, to adapt to the deformation process of operating process.
Step 4: opening mold, takes out formation of parts, that is, complete a forming process.
Correspondingly, the mold in step includes pattern 1, locating piece 2, plunger 3, sleeve 7,1 top and bottom of pattern are respectively set
A locating piece 2 is set, upper locating piece 2-1 is closing form, and lower locating piece is open-cellular form, is sealed on locating piece 2 equipped with YX type
Circle 6, plunger 3 is placed in inside the hole of lower locating piece 2-2.
Wherein, the material of the cylinder base 4 in step 1 is the difficult deformation material such as stainless steel or high temperature alloy.The stainless steel trade mark is
1Cr18Ni9Ti or 0Cr18Ni9Ti etc., the high temperature alloy trade mark are GH3044, GH4169 or GH99 etc..Made of above-mentioned material
Curvature mutation closed cross-section member can meet the needs of aerospace and field of power machinery.
In specific embodiment, the wall thickness of cylinder base 4 is 0.3mm~1.5mm.Referring to Fig. 1 and Fig. 2, the thickness of cylinder base 4 is preferably
1.0mm can meet the needs of aerospace and field of power machinery, and be suitble to require the knot of closing variable cross-section curvature mutation component
Structure is light-weight, intensity requirement and the higher occasion of dimension precision requirement.
Referring to Fig. 1 and Fig. 2, in step 2 pattern 1 structure use split-type structure, convenient for mold fabricate and at
Mold mounts and dismounts when shape.In addition, according to curvature mutation degree, i.e. curvature mutation size cases, the pattern body 1-1 of pattern 1
Insert 1-2 is set in local curvature's mutation larger part, in order to take out part after shaping.
Referring to Fig. 3-Fig. 8, on-load pressure F, F in step 3 ' and V be no more than 400MPa, pressure-loaded speed is 0.1MPa/
S~1.0MPa/s.The closing variable cross-section curvature mutation thin-wall member precision shaped within this range is high.
Referring to Fig. 3-Fig. 8, sticky soft mode material 5 is molecular weight 100kg/mol~900kg/mol in step 3 macromolecule
Polymer material, and the states of matter of sticky soft mode material 5 is semisolid.Macromolecule polymer material is methyl vinyl silicone rubber,
Have many advantages, such as good fluidity under high pressure, can produce tangential adhesive attachment stress.
Further, molecular weight is chosen in 100kg/ according to parts locally Burst Size size and the intensity of different materials
Sticky soft mode material 5 between mol~900kg/mol adjusts the big of different pressure P and tangential adhesive attachment stress τ with this
It is small and meet under different situations the needs of to resisting medium forming force.
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 (4)
1. a kind of difficult-to-deformation material closes variable cross-section thin-wall part viscous pressure forming method, which is characterized in that method includes
Following steps:
Step 1: production cylinder base (4), according to the design feature selection suitable dimension of closing variable cross-section local curvature mutation component
Cylinder base (4), the thin wall cylinder base for rolling and being welded using seamless thin wall cylinder or plate blank material；
Step 2: cylinder base (4) is fitted into shaping dies, the pattern (1) of splitted structure is placed in sleeve (7), cylinder base (4) are filled
Enter in pattern (1), locating piece (2) fixed cylinder base (4) is installed, YX type sealing ring is housed on the locating piece (2)；
Step 3: forming process, under the action of on-load pressure, loading sticky soft mode material (5) by plunger (3) is injected into it
Cylinder base (4) is internal, and sticky soft mode material (5) is applied to a base (4), generates pressure P on the surface of cylinder base (4) and tangential viscosity is attached
Stress τ, pressure P non-uniform Distribution deform size with cylinder base (4) and change, while the tangential adhesive attachment stress τ's in surface
Under effect, drive cylinder base (4) material to flowing at pattern (1) curvature mutation, final cylinder base (4) is gradually bonded with pattern (1)；
The macromolecule polymer material that the viscosity soft mode material (5) is molecular weight 100kg/mol~900kg/mol, and viscosity
The states of matter of soft mode material (5) is semisolid；
Molecular weight is chosen in 100kg/mol~900kg/mol according to parts locally Burst Size size and the intensity of different materials
Between sticky soft mode material (5), the size of different pressure P and tangential adhesive attachment stress τ are adjusted with this and meets difference
In the case of demand to resisting medium forming force；
The on-load pressure is no more than 400MPa, and the loading velocity of the on-load pressure is 0.1MPa/s~1.0MPa/s；
Step 4: opening mold, takes out formation of parts, completes a forming process.
2. a kind of difficult-to-deformation material according to claim 1 closes variable cross-section thin-wall part viscous pressure forming method,
It is characterized by: the material of the cylinder base (4) in the step 1 is stainless steel or high temperature alloy.
3. a kind of difficult-to-deformation material according to claim 1 or 2 closes variable cross-section thin-wall part viscous pressure forming side
Method, it is characterised in that: the wall thickness of the cylinder base (4) in the step 1 is 0.3mm~1.5mm.
4. a kind of difficult-to-deformation material according to claim 3 closes variable cross-section thin-wall part viscous pressure forming method,
It is characterized by: the structure of pattern (1) uses split-type structure, according to curvature mutation degree, pattern (1) in the step 2
Insert (1-2) is arranged in pattern body (1-1) at local deep camber mutation, in order to take out part after shaping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910108893.4A CN109759493B (en) | 2019-02-03 | 2019-02-03 | A kind of difficult-to-deformation material closing variable cross-section thin-wall part viscous pressure forming method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910108893.4A CN109759493B (en) | 2019-02-03 | 2019-02-03 | A kind of difficult-to-deformation material closing variable cross-section thin-wall part viscous pressure forming method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109759493A CN109759493A (en) | 2019-05-17 |
| CN109759493B true CN109759493B (en) | 2019-11-01 |
Family
ID=66456072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910108893.4A Active CN109759493B (en) | 2019-02-03 | 2019-02-03 | A kind of difficult-to-deformation material closing variable cross-section thin-wall part viscous pressure forming method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109759493B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110421055B (en) * | 2019-09-10 | 2020-04-28 | 哈尔滨工业大学 | High-temperature alloy stretch-bending curved surface cylindrical part forming device and springback control method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003062927A (en) * | 2001-08-27 | 2003-03-05 | Nippon Steel Corp | Soluble lubricating surface-treated metal product for hydroforming excellent in moldability and emulsion- resistant hydraulic oil properties, and molding processing method therefor |
| CN203245239U (en) * | 2013-03-25 | 2013-10-23 | 成都联创精密机械有限公司 | Tubing high-strength external drum die |
| CN106270093A (en) * | 2016-09-09 | 2017-01-04 | 哈尔滨工业大学 | A kind of hollow blade intrinsic pressure manufacturing process of viscoelastroplasticity soft mode and forming device |
| CN106734567A (en) * | 2016-11-25 | 2017-05-31 | 沈阳黎明航空发动机(集团)有限责任公司 | A kind of thin-wall stamping part press-processing method |
| CN107695170A (en) * | 2017-10-18 | 2018-02-16 | 陕西科技大学 | The firm mould flexible die compound molding device and method of a kind of reducing cylindrical member |
| CN108555107A (en) * | 2018-05-14 | 2018-09-21 | 西南石油大学 | Equal wall thickness metal stator bushing machinery is outer to be squeezed and fluid Inner pressurization compound forming processing methods |
-
2019
- 2019-02-03 CN CN201910108893.4A patent/CN109759493B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003062927A (en) * | 2001-08-27 | 2003-03-05 | Nippon Steel Corp | Soluble lubricating surface-treated metal product for hydroforming excellent in moldability and emulsion- resistant hydraulic oil properties, and molding processing method therefor |
| CN203245239U (en) * | 2013-03-25 | 2013-10-23 | 成都联创精密机械有限公司 | Tubing high-strength external drum die |
| CN106270093A (en) * | 2016-09-09 | 2017-01-04 | 哈尔滨工业大学 | A kind of hollow blade intrinsic pressure manufacturing process of viscoelastroplasticity soft mode and forming device |
| CN106734567A (en) * | 2016-11-25 | 2017-05-31 | 沈阳黎明航空发动机(集团)有限责任公司 | A kind of thin-wall stamping part press-processing method |
| CN107695170A (en) * | 2017-10-18 | 2018-02-16 | 陕西科技大学 | The firm mould flexible die compound molding device and method of a kind of reducing cylindrical member |
| CN108555107A (en) * | 2018-05-14 | 2018-09-21 | 西南石油大学 | Equal wall thickness metal stator bushing machinery is outer to be squeezed and fluid Inner pressurization compound forming processing methods |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109759493A (en) | 2019-05-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100537074C (en) | Device for preventing suspension area from breaking while taper piece filling liquid and drawing deep forming and forming method | |
| CN102921790B (en) | Sheet material hydro-mechanical deep drawing forming device and method using magnetic medium to pressurize | |
| CN104607524B (en) | The tailor welded integral drawing forming device of a kind of large-scale curved part and method | |
| CN102248056B (en) | Method for improving sheet forming limit | |
| CN100500320C (en) | Device for improving forming limit of hydromechanical drawing of sheet material and method thereof | |
| CN106238552B (en) | High-duty pulsatile impact hydraulic forming method | |
| CN107745029A (en) | A kind of store-vessel bottom integral forming method | |
| CN109675998A (en) | A kind of viscous pressure forming method of local curvature's mutation sheet cover | |
| CN107695170B (en) | A kind of rigid mould-flexible die compound molding device and method of variable diameter cylindrical member | |
| CN109759493B (en) | A kind of difficult-to-deformation material closing variable cross-section thin-wall part viscous pressure forming method | |
| MXPA04009322A (en) | Method and apparatus for making a can lid shell. | |
| CN103084466A (en) | Method of flexible punch head ultrasonic micro deep drawing step-by-step molding and device thereof | |
| CN101462134B (en) | Toroidal flow shaping method of antisymmetric reducing thin wall part | |
| CN1962107A (en) | Internal and external pressurization compound forming method for axisymmetric thin-wall special-shaped curved work piece with large section surface | |
| CN111451351B (en) | Forming and integrating method for tubular part | |
| CN103920795B (en) | A kind of heat expansion vibration combined forming process of solid particle of automobile rear axle housing | |
| CN101109061B (en) | Room temperature hydrostatic liquid extrusion pressing deforming strengthening technique of magnesium alloy | |
| CN113523104A (en) | Rigid-flexible composite forming device and method for improving die attaching precision of deep concave bottom type part | |
| CN109692911A (en) | A kind of large size toroidal shell part monolithic molding device and method | |
| CN110788193B (en) | Controllable medium cold stamping forming process method and die structure thereof | |
| CN109759487B (en) | Partial stamping device and process method of thin-walled tube assisted by magnetorheological grease | |
| CN106363067A (en) | Overall shaping device for box bottom of spacecraft fuel storage box and shaping method for same | |
| CN101327504B (en) | Technique for squeezing through-hole high dummy club on sheet | |
| CN101862782B (en) | Method for forming diameter-variable parts by viscoelastic-plastic flexible die | |
| CN104624799B (en) | A kind of method of high-temp solid powder medium assisted titanium sheet alloy superplasticity drawing and bulging integration |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |