CN108273880A - A kind of spherical shape lightweight siding manufacturing process - Google Patents
A kind of spherical shape lightweight siding manufacturing process Download PDFInfo
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- CN108273880A CN108273880A CN201711396451.1A CN201711396451A CN108273880A CN 108273880 A CN108273880 A CN 108273880A CN 201711396451 A CN201711396451 A CN 201711396451A CN 108273880 A CN108273880 A CN 108273880A
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- spherical
- cavity plate
- manufacturing process
- lightweight siding
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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
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/06—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles
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Abstract
The present invention provides a kind of spherical lightweight siding manufacturing process, belong to load-carrying construction forming technology technical field.Spherical shape lightweight siding manufacturing process provided in an embodiment of the present invention, the progressive molding preform of single-point is carried out to tablet spread material according to default forming path by using piece pre-forming die, apply back pressure assist formation by using flexible board, non- isostatic pressed field is formed in rigid die, and then different pressure distributions is generated in tablet spread material different zones, effectively the deformation of plank is controlled, improves the forming property of plank, avoid plate in forming process that rugosity, raising forming quality occurs.
Description
Technical field
The present invention relates to a kind of flanged grid ribs spherical shape lightweight siding forming process of Complex Aluminum Alloy, belong to and hold
Power structure formation technology field.
Background technology
Aluminum alloy strip flange grid ribs spherical shape lightweight siding belongs to space industry large size lightweight integral panel structure, tool
There is apparent loss of weight effect, construction weight can be made to reduce 10%~30%.Aluminum alloy strip flange grid ribs spherical shape lightweight siding
It is the nuclear structure for the long-life space station for establishing Attended mode, which is large thin-wall widely used in current space station
The upgrading of spherical covering sealing structure and surmount.Relative to large thin-wall spherical shape covering sealing structure, aluminum alloy strip flange grid
Muscle spherical shape lightweight siding also improves the sealing of section structure while the strength and stiffness for substantially increasing section structure
Performance and anti-fatigue performance.
Currently, usually spherical siding is obtained, by this method to being bent from spread material both sides by two rigid dies
The siding edge corrugation of system is serious, is unfavorable for being welded to connect for siding, cannot be satisfied requirement.
Invention content
The technology of the present invention solves the problems, such as：A kind of spherical lightweight siding manufacturing process is provided, to avoid forming process
Rugosity, raising forming quality occurs for middle plate.
For achieving the above object, the present invention adopts the following technical scheme that：
A kind of spherical shape lightweight siding manufacturing process, includes the following steps：
Step 1 makes piece pre-forming die and whole curve mold, and the piece pre-forming die includes the punch-pin of adaptation and recessed
Mould, the punch-pin are ball crown type face bulge-structure, and the cavity plate is ball crown type face groove, the radius of curvature of the cavity plate and punch-pin
Respectively less than spherical lightweight siding designs radius of curvature, the radius of curvature of the entirety curve mold and the spherical lightweight wall
Plate design radius of curvature is consistent, and spherical crown height is high not less than the design spherical crown of the spherical lightweight siding；
Step 2, tablet spread material is carried out etc. strengths reason and at least the lower surface of the tablet spread material cover one layer it is soft
Property plate, obtains component to be formed；
Step 3 is coordinated using the cavity plate and the punch-pin, and single-point is carried out to the component to be formed according to preset path
Progressive molding preform, obtains the component after preform；
Step 4 carries out die forming using the whole curve mold to the component after the preform, obtains forming group
Part；
Step 5 removes the flexible board in the forming assembly and strengths is waited to manage filler, after eliminating stress, obtains spherical light
Quantify siding.
In an alternative embodiment, the piece pre-forming die includes at least two cavity plates, and described at least two recessed
The spherical crown height of mould is different, the progressive molding preform number of the single-point described in step 3 and the cavity plate quantity Matching, and presses
The cavity plate is selected successively according to the high ascending sequence of spherical crown of the cavity plate, is matched with the cavity plate and the punch-pin of selection
It closes and carries out each secondary progressive molding preform of single-point.
In an alternative embodiment, the radius of curvature of the punch-pin is the design radius of curvature of the spherical lightweight siding
50%-90%, the high 10%-20% of the design spherical crown of a height of spherical lightweight siding of spherical crown.
In an alternative embodiment, by least two cavity plate according to spherical crown height being ranked sequentially from low to high, it is adjacent
Spherical crown height difference between two cavity plates is high no more than the spherical crown of first cavity plate.
In an alternative embodiment, the spherical crown height of first cavity plate is higher 2%-5% than the punch-pin spherical crown.
In an alternative embodiment, the flexible board is rubber slab；Thickness is 2mm-30mm.
In an alternative embodiment, the tablet spread material has network, and the equal strengths described in step 2, which are managed, includes,
The filled polyurethane rubber in the mesh space of the tablet spread material.
In an alternative embodiment, preset path described in step 3 includes a plurality of winding route of nested setting, each described
Winding route is made of multiple molding points.
In an alternative embodiment, the elimination stress described in step 5, including：
At 320 ± 50 DEG C, soaking time is 1-1.5 hours.
In an alternative embodiment, the tablet spread material is aluminium alloy, magnesium alloy or steel material.
The present invention has the beneficial effect that compared with prior art：
Spherical shape lightweight siding manufacturing process provided in an embodiment of the present invention, by using piece pre-forming die according to being preset to
Shape path carries out the progressive molding preform of single-point to tablet spread material, applies back pressure assist formation by using flexible board, rigid
Property mold in form non-isostatic pressed field, and then different pressure distributions is generated in tablet spread material different zones, effectively to plate
The deformation of material is controlled, and the forming property of plank is improved, and avoids plate in forming process that rugosity, raising forming quality occurs.
Description of the drawings
Fig. 1 is the tablet spread material structural schematic diagram that a specific embodiment of the invention provides；
Fig. 2 is the piece pre-forming die and assembling schematic diagram before component to be formed forming that a specific embodiment of the invention provides；
Each component assembling schematic diagram when second of preform of carry out that Fig. 3 provides for a specific embodiment of the invention；
Fig. 4 is the progressive molding preform path schematic diagram of single-point that a specific embodiment of the invention provides.
Specific implementation mode
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
An embodiment of the present invention provides a kind of spherical lightweight siding manufacturing process, include the following steps：
Step 1 makes piece pre-forming die and whole curve mold, and the piece pre-forming die includes the punch-pin of adaptation and recessed
Mould, the punch-pin are ball crown type face bulge-structure, and the cavity plate is ball crown type face groove, the radius of curvature of the cavity plate and punch-pin
Respectively less than spherical lightweight siding designs radius of curvature, the radius of curvature of the entirety curve mold and the spherical lightweight wall
Plate design radius of curvature is consistent, and spherical crown height is high not less than the design spherical crown of the spherical lightweight siding；
In the embodiment of the present invention, plate material to rebound can be fully considered according to the design sphere curved surface of spherical lightweight siding
Amount and selected materials performance, structure and size obtain rational piece pre-forming die type face by theoretical calculation and numerical simulation
Radius of curvature；Die face can also be modified according to engineer testing verification result, until meeting the requirement that designs a model；
The determination process in whole curve mold type face is：According to design threedimensional model, process allowance and clamping needs are fully considered, design
The whole curve mold of iso-curvature molding；
Specifically, the preferred cavity plate is consistent with the radius of curvature of punch-pin in the embodiment of the present invention；The spherical shape lightweight
Siding tablet expansion shape can be straight line with can after the curved side alternately formings such as irregular hexagon, petal, round
To be welded into spherical any shape；Grid can be the shape that triangle, parallelogram etc. can form grid；The position of flange
It sets and size can carry out arbitrary arrangement according to design requirement；The preferably same mesh shape of the same spherical wall panel parts；
Step 2, tablet spread material is carried out etc. strengths reason and at least the lower surface of the tablet spread material cover one layer it is soft
Property plate, obtains component to be formed；
Specifically, in an alternative embodiment, one layer of flexibility can also respectively be covered on the upper and lower surface of the tablet spread material
Plate, to apply back pressure and the positive pressure present invention does not limit simultaneously in spherical lightweight siding upper and lower surface；
Step 3 is coordinated using the cavity plate and the punch-pin, and single-point is carried out to the component to be formed according to preset path
Progressive molding preform, obtains the component after preform；
Step 4 carries out die forming using the whole curve mold to the component after the preform, obtains forming group
Part；
Step 5 removes the flexible board in the forming assembly and strengths is waited to manage filler, after eliminating stress, obtains spherical light
Quantify siding.
Spherical shape lightweight siding manufacturing process provided in an embodiment of the present invention, by using piece pre-forming die according to being preset to
Shape path carries out the progressive molding preform of single-point to tablet spread material, applies back pressure assist formation by using flexible board, rigid
Property mold in form non-isostatic pressed field, and then different pressure distributions is generated in tablet spread material different zones, effectively to plate
The deformation of material is controlled, and the forming property of plank is improved, and avoids plate in forming process that rugosity, raising forming quality occurs.
In an alternative embodiment, the piece pre-forming die includes at least two cavity plates, and described at least two recessed
The spherical crown height of mould is different, and the progressive molding preform of the single-point described in step 3 carries out repeatedly, and pre-compaction forming number and institute
Cavity plate quantity Matching is stated, the cavity plate is selected successively according to the high ascending sequence of the spherical crown of the cavity plate, with the institute of selection
State the cooperation of cavity plate and the punch-pin and carry out each secondary progressive molding preform of single-point, for example, first select the high minimum cavity plate of spherical crown with
Punch-pin cooperation carries out molding preform for the first time according to preset path, and the high next to the lowest cavity plate of spherical crown is then selected to coordinate with punch-pin
Second of molding preform is carried out according to preset path, and so on.It is high by successively increasing piece pre-forming die cavity plate spherical crown, it presses
Default forming path, repetition implement the progressive molding preform of point-by-point from coil to coil single-point, are continuously increased spherical lightweight siding preform
Amount, further improves forming quality.
In an alternative embodiment, the radius of curvature of the punch-pin is the design radius of curvature of the spherical lightweight siding
50%-90%, the design spherical crown of a height of spherical lightweight siding of spherical crown high 10%-20%, it is pre- to be further ensured that
Plate does not occur rugosity when forming, further increases forming quality.
In an alternative embodiment, by least two cavity plate according to spherical crown height being ranked sequentially from low to high, it is adjacent
Spherical crown height difference between two cavity plates is high no more than the spherical crown of first cavity plate, the preferably equal to first cavity plate
Spherical crown is high, ensures that the progressive preformed deflection of molding of each single-point is suitable, further increases forming quality.
In an alternative embodiment, the spherical crown height of first cavity plate is higher 2%-5% than the punch-pin spherical crown, so that
Plate in molding at two die boundaries can extend along cavity plate, avoid the generation of the flaws such as impression.
In an alternative embodiment, the flexible board is rubber slab；The preferred 2mm-30mm of thickness, to ensure to produce when being pressurized
Raw good back pressure.
In an alternative embodiment, the tablet spread material has network, and the equal strengths described in step 2, which are managed, includes,
The filled polyurethane rubber in the mesh space of the tablet spread material, this method is simple to operation, and is convenient for going after forming
Except filling, ensure network compatible deformation, while ensuring that grid ribs are not distorted unstability.
In an alternative embodiment, preset path described in step 3 includes a plurality of winding route of nested setting, each described
Winding route is made of multiple molding points, and specifically, the profile of winding route is consistent with the profile of tablet spread material, and size is less than
The overall size of tablet spread material, for example, tablet spread material is quadrangle, then winding route can be quadrangle；When preform,
It can be processed according to winding route point circle along the component outer rim to be formed to the direction at center, it can also be according in
The extrorse direction Fen Quan of the heart is processed, and can not be limited with point circle processing of outer rim center alternately, the present invention；
In an alternative embodiment, the elimination stress described in step 5, including：At 320 ± 50 DEG C, soaking time 1-
1.5 hour.
In an alternative embodiment, the tablet spread material is aluminium alloy, magnesium alloy or steel material.
It is the specific embodiment of the present invention below：
A kind of manufacturing process of the flanged grid ribs spherical shape lightweight siding of Complex Aluminum Alloy is present embodiments provided, including
Following steps
Step 1. utilizes vacuum cup, and the aluminium alloy blank material of 2000mm*2000mm*40mm is fixed on NC Milling
On center, ensures that blank and vacuum cup are sturdy, according to the theory three-dimensional model of spherical lightweight siding, calculate spherical light weight
Change appearance profile, grid ribs and flange position and size after siding expansion and appearance profile and net are determined according to result of calculation
The layout of lattice muscle and flange in appearance profile.It point rough mills, half finish-milling, finish-milling multi-pass Milling Machining, obtains flanged grid ribs
Spherical lightweight siding tablet spread material 1, as shown in Figure 1, tablet spread material 1 is in irregular hexagon, and the hexagon
Six sides be alternately made of successively straight line and curved side；
Step 2. tablet spread material 1 after processing is completed, will carry out equal strengths reason, be used in urethane filler to grid
Coordinate the deformation uniformity of grid soffit covering and grid facade muscle.
The design radius of curvature of step 3. siding is 1500mm, a height of 350mm of spherical crown, and springback compensation is manufactured according to the size
Delamination piece pre-forming die and whole curve mold, the piece pre-forming die include that punch-pin 10, the first cavity plate 20 and second are recessed
Mould 30, punch-pin 10 are ball crown type face bulge-structure, radius of curvature 1100mm, a height of 40mm of spherical crown, the first cavity plate 20 and
Two cavity plates 30 are ball crown type face groove, and radius of curvature is 1130mm, a height of 50mm of spherical crown of the first cavity plate 20, second recessed
The a height of 100mm of spherical crown of mould 30；Curve mold radius of curvature is consistent with the design radius of curvature of siding and outer profile for the entirety
Shape is consistent with the design machined surface profile of siding, and the big 30mm of size ratio design machined surface profile size.
Step 4. carries out the progressive delamination preform of single-point and whole curve mold to tablet spread material 1 on a hydraulic press
The combined shaping that die forming is combined, as shown in Fig. 2, detailed process is as follows：The two blocks of flexible media rubber prepared first are flat
Plate is put on the above and below of tablet spread material 1 and is used as upper bed course 2 and underlayer 3 respectively, then first recessed using punch-pin and first
Mould is started from the outer rim of tablet spread material 1 into tablet spread material 1 according to path as shown in Figure 4 by single-point progressive manner
Heart delamination carries out preform, and A indicates that passage (loopback path serial number), B indicate to be molded a little in passage in label A-B in Fig. 4
Processing sequence serial number, as shown in figure 4, first processing outer rim one enclose, then inwardly translation, processing with outer rim similar in one circle, according to
It is secondary to analogize, it is directly processed to 1 center of tablet spread material；Then as shown in figure 3, using punch-pin and the second cavity plate, pass through list
Point progressive manner is started to carry out molding preform to the extension of 1 center segment of tablet spread material from the outer rim of tablet spread material 1；Most
Whole curve mold is used afterwards, using integral die forming method, realizes that spherical lightweight siding uniform stressed and high-precision shape.
Step 5. removes urethane filler material, using the heat treatment shaping spherical surface mould for meeting element precision requirement
As school shape tooling, makes the spherical lightweight wall panel parts after forming carry out forcing patch tire first, then protected at 320 ± 10 DEG C
The warm time is 1.5 hours, carries out heat treatment destressing, obtains spherical lightweight siding.
The defects of spherical shape lightweight siding crack-free provided in an embodiment of the present invention, rugosity, distortion, shaped profile degree is better than
0.5mm/m。
Unspecified part of the present invention belongs to common sense well known to those skilled in the art.The specific embodiment is only pair
Spirit of that invention gives an example.The personnel of the technical field of the invention can do the specific embodiment different repair
Change or supplement or replace by a similar method, but spirit without departing from the present invention or surmounts the appended claims and defined
Range.
Claims (10)
1. a kind of spherical shape lightweight siding manufacturing process, which is characterized in that include the following steps：
Step 1 makes piece pre-forming die and whole curve mold, and the piece pre-forming die includes the punch-pin and cavity plate of adaptation, institute
It is ball crown type face bulge-structure to state punch-pin, and the cavity plate is ball crown type face groove, and the radius of curvature of the cavity plate and punch-pin is small
Radius of curvature is designed in spherical lightweight siding, the radius of curvature of the entirety curve mold is set with the spherical lightweight siding
Meter radius of curvature is consistent, and spherical crown height is high not less than the design spherical crown of the spherical lightweight siding；
Step 2 the tablet spread material such as carries out strengths and manages and at least cover one layer of flexibility in the lower surface of the tablet spread material
Plate obtains component to be formed；
Step 3 is coordinated using the cavity plate and the punch-pin, and it is progressive to carry out single-point to the component to be formed according to preset path
It is molded preform, obtains the component after preform；
Step 4 carries out die forming using the whole curve mold to the component after the preform, obtains forming assembly；
Step 5 removes the flexible board in the forming assembly and strengths is waited to manage filler, after eliminating stress, obtains spherical lightweight
Siding.
2. spherical shape lightweight siding manufacturing process according to claim 1, which is characterized in that the piece pre-forming die includes
At least two cavity plates, and the spherical crown height of at least two cavity plate is different, the progressive molding of single-point described in step 3
Preform number and the cavity plate quantity Matching, and described in selecting successively according to the high ascending sequence of the spherical crown of the cavity plate
Cavity plate carries out the progressive molding preform of each secondary single-point with the cavity plate of selection and punch-pin cooperation.
3. spherical shape lightweight siding manufacturing process according to claim 1 or 2, which is characterized in that the curvature of the punch-pin
Radius is the 50%-90% of the design radius of curvature of the spherical lightweight siding, a height of spherical lightweight siding of spherical crown
The high 10%-20% of design spherical crown.
4. spherical shape lightweight siding manufacturing process according to claim 3, which is characterized in that by least two cavity plate
According to spherical crown height being ranked sequentially from low to high, the spherical crown height difference between the two neighboring cavity plate is described recessed no more than first
The spherical crown of mould is high.
5. spherical shape lightweight siding manufacturing process according to claim 4, which is characterized in that the ball of first cavity plate
Crown height is higher 2%-5% than the punch-pin spherical crown.
6. spherical shape lightweight siding manufacturing process according to claim 5, which is characterized in that the flexible board is rubber
Plate；Thickness is 2mm-30mm.
7. spherical shape lightweight siding manufacturing process according to claim 1, which is characterized in that the tablet spread material has
Network, the equal strengths reason described in step 2 includes the filled polyurethane rubber in the mesh space of the tablet spread material.
8. spherical shape lightweight siding manufacturing process according to claim 1, which is characterized in that preset road described in step 3
Diameter includes a plurality of winding route of nested setting, and each winding route is made of multiple molding points.
9. spherical shape lightweight siding manufacturing process according to claim 1, which is characterized in that the elimination described in step 5 is answered
Power, including：
At 320 ± 50 DEG C, soaking time is 1-1.5 hours.
10. spherical shape lightweight siding manufacturing process according to claim 1, which is characterized in that the tablet spread material is
Aluminium alloy, magnesium alloy or steel material.
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| CN201711396451.1A CN108273880B (en) | 2017-12-21 | 2017-12-21 | A kind of spherical shape lightweight siding manufacturing process |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109955043A (en) * | 2019-03-29 | 2019-07-02 | 北京卫星制造厂有限公司 | The manufacturing process of space curved surface protective plate with inside and outside two-way reinforcing rib |
| CN110369607A (en) * | 2019-07-08 | 2019-10-25 | 上海交通大学 | A kind of plate progressive molding device and method based on the double-deck auxiliary material of superposition |
| CN112570538A (en) * | 2020-10-27 | 2021-03-30 | 航天材料及工艺研究所 | Creep age forming tool for aluminum-lithium alloy thin-wall structure assisted by rubber padding |
| CN112570537A (en) * | 2020-10-27 | 2021-03-30 | 航天材料及工艺研究所 | Rubber padding material assisted creep aging precision forming method for aluminum alloy thin-wall component |
| CN114633417A (en) * | 2020-12-15 | 2022-06-17 | 中国科学院金属研究所 | Preparation method of discrete filler for assisting bending in inner grid wall plate roll bending process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109955043A (en) * | 2019-03-29 | 2019-07-02 | 北京卫星制造厂有限公司 | The manufacturing process of space curved surface protective plate with inside and outside two-way reinforcing rib |
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| CN112570538A (en) * | 2020-10-27 | 2021-03-30 | 航天材料及工艺研究所 | Creep age forming tool for aluminum-lithium alloy thin-wall structure assisted by rubber padding |
| CN112570537A (en) * | 2020-10-27 | 2021-03-30 | 航天材料及工艺研究所 | Rubber padding material assisted creep aging precision forming method for aluminum alloy thin-wall component |
| CN112570537B (en) * | 2020-10-27 | 2022-11-11 | 航天材料及工艺研究所 | Creep aging precision forming method for aluminum alloy thin-wall component assisted by rubber padding |
| CN114633417A (en) * | 2020-12-15 | 2022-06-17 | 中国科学院金属研究所 | Preparation method of discrete filler for assisting bending in inner grid wall plate roll bending process |
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