CN109877211A - A kind of band muscle siding filler electromagnetic forming method - Google Patents
A kind of band muscle siding filler electromagnetic forming method Download PDFInfo
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- CN109877211A CN109877211A CN201910257363.6A CN201910257363A CN109877211A CN 109877211 A CN109877211 A CN 109877211A CN 201910257363 A CN201910257363 A CN 201910257363A CN 109877211 A CN109877211 A CN 109877211A
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Abstract
A kind of band muscle siding filler electromagnetic forming method, first filler carries out electro-magnetic forming again between band muscle siding grid, and reasonable forming station point is determined during electro-magnetic forming, effectively avoids drawbacks described above, realizes band muscle siding bending forming.Present invention inhibits with the siding ridging defect in muscle siding forming process, it reduces with muscle siding in the back-flexing degree close to die entrance region, siding collision reaction phenomenon when avoiding band muscle siding forming the defects of rib unstability lateral bending, when weakening with the forming of muscle siding.
Description
Technical field
It is specifically a kind of to realize band muscle wallboard members using filler electro-magnetic forming the present invention relates to rib field of material processing
The method of forming.
Background technique
It is the key structure part of aircraft equipment with muscle siding, it is both the important component for constituting Aerodynamic Configuration of Aireraft,
It is the main load-carrying member of wing, fuselage etc. again.Therefore, band muscle siding manufacturing technology is the positions such as airframe, wing large size
One of the key common technology that lightweight entirety and high tensile metal structure manufacturing technology urgently develop.However, this kind of component is general
Using high-strength difficult-to-deformation material, such as aluminium alloy, titanium alloy, and there is complicated shape curvature (single-curvature or hyperbolicity) and interior
Shape structure (rib layout), not only meets shape requirement to reach, but also realizes high-strength, loss of weight purpose.In order to realize needed for military service
The shape curvature wanted needs that certain plastic bending deformation will be carried out with muscle siding blank, reaches required target shape, this
A process is referred to as the forming process with muscle siding.Existing band muscle siding forming technique be mainly contour peening, creep ageing at
Shape, press shaping die, roll forming etc..For shot-peening and creep age forming, although the mainstream side with the forming of muscle wall panel parts
Method, but forming technology is complicated, occupation area of equipment is big, the selection of technological parameter mainly by practical experience and operating technology, at
Generally it is aided with finishing school shape technique after shape, for the wallboard members of certain local labyrinths, these traditional forming methods are difficult
Processing；For another example the manufacturing process such as roll bending, press-bending face the low problem of production efficiency although technological equipment is simpler, part at
The increase of shape difficulty causes the tonnage of Forming Equipments to increase, thus is unable to satisfy the short cycle production to large size with muscle wall panel parts
It needs.Therefore, there is an urgent need to explore the new advanced forming process of integral panel.
Electro-magnetic forming involved in the present invention is a kind of high energy rate forming being plastically deformed using magnetic field power drive metal stock
Method.It is specifically exactly between coil and blank because electromagnetic induction principle generates the magnetic field of interaction, so that being in magnetic field
In conductive blank be plastically deformed by the effect of magnetic field force, due to its forming be using magnetic field force, forming process not by
Rapid processing may be implemented in the influence of motion parts machinery inertial, and high production efficiency, drip molding precision is high, springs back small, mold letter
It is single, new approach is provided with the forming of muscle integral wall plate to be large-scale.Author V.Psyk, D.Risch etc. are in document
To the theoretical research in the magnetic pulse formation of plate, pipe fitting, Numerical-Mode in " Electromagneticforming-Areview "
Fit experimental study carried out more comprehensive summary (V.Psyk, D.Risch, B.L.Kinsey,
etal.Electromagneticforming-Areview,JournalofM aterialsProcessingTechnology,
2011)。
However, plate, pipe part molding field are focused primarily upon for the research of the technology both at home and abroad at present, for band muscle
This plate electro-magnetic forming with partly or wholly feature structure of wallboard members is rarely reported.Inventor exists
In the patent of invention of ZL201310397820.4, a kind of device and side that the forming of rib part is realized using magnetic field impulse power is disclosed
Method, its advantage is that being applied to the different location of rib using different coils, muscle coil is used for the deformation of rib, and siding coil is used
In the deformation of siding, by both coils in movement vertically or horizontally, avoid because workpiece and winding space increase
And magnetic field force reduce rapidly caused by the insufficient defect of mold, to realize the bending forming of rib.The shortcomings that invention
It is the forming for the single reinforcement item that this method is limited only to small dimension size, drip molding curvature is also fairly simple, is not particularly suited for large size
The forming of complicated bead structures integral panel.
Problem, hair of the inventor in Publication No. ZL201610157973.5 are shaped for large complicated band muscle integral panel
It is proposed that a kind of utilization magnetic field impulse local loading and shaping realizes large-scale skinpiston forming device and method in bright patent, its advantage is that
Magnetic pulse forming techniques are combined with local loading and shaping technology, realize large and complex structure skinpiston bending forming.
However, the invention exacerbates magnetic field force nonunf ormity, in turn the disadvantage is that since magnetic field force acts on rib and siding simultaneously
The defects of causing siding to deform uneven, corrugation, tilting, rib lateral bending easily generated in forming.
Being also easy to produce defect during band muscle siding electro-magnetic forming is mostly to make the uneven institute of magnetic field force distributed pole by rib
Caused by.Therefore, reduce this magnetic field force trend unevenly distributed, and provide support for rib two sides, be to solve the problem
Effective way.Author Zhang Shihong proposed in document " integral panel filler roll forming technical study " a kind of filler roll bending at
Shape technique (Zhang Shihong, integral panel filler roll forming technical study, forging technology, 2009), is filled out in the rib side of siding
Backing plate and cushion block are filled, realizes that packing material temporarily forms a whole with siding, then carries out roll and bend forming.This method prevent
When upper roller is applied directly to rib the problems such as rib unstability, cracking, slab uniform stressed is realized.Therefore, filler has between rib
Help protect rib, can effectively improve the shaping uniformity and forming property of siding.
Band muscle siding based on this filler shapes thought, set forth herein a kind of band muscle siding filler electromagnetic forming method,
The first packing material between grid ribs, then electro-magnetic forming, realize effective control with muscle siding electro-magnetic forming defect.
Summary of the invention
To overcome the shortcomings of siding corrugation, rib unstability during electro-magnetic forming existing in the prior art, the present invention is mentioned
A kind of band muscle siding filler electromagnetic forming method is gone out.
Detailed process of the invention is:
Step 1, filler between band muscle siding grid:
It is filled in the grid with muscle siding using butadiene rubber or 2A12-T4 aluminium alloy as filler.
When filling butadiene rubber in the grid with muscle siding, each surface of the butadiene rubber and corresponding rib face should be made
Fitting completely；When filling 2A12-T4 aluminium alloy in the grid with muscle siding, the 2A12-T4 aluminium alloy and the band should be made
There is the gap 2mm in muscle siding between the adjacent surface of longitudinal center's rib and longitudinal center's rib, and fills in the gap
Non-conductive rigid plastics gasket.
Step 2, forming station point is determined:
Coil group center line is with the position on muscle siding when the determining forming station point is determining electro-magnetic forming.Pass through
Formula (1) determines forming station number according to the band muscle siding formation zone area and coil group lower surface area ratio
W。
In formula (1), U is the ratio with muscle siding formation zone area Yu coil group lower surface area；To the band
The ratio round of muscle siding formation zone area and coil group lower surface area.
When determining forming station number W is 1, which is located at band muscle siding geometric center.
When determining forming station number W is greater than 1 and is odd number, one of forming station point is located at band muscle siding
Geometric center, remaining station are uniformly distributed on band muscle siding width direction center line, and about in band muscle siding length direction
Heart line is symmetrical.
When determining forming station number W is even number, which is divided into two groups, and by each forming station point
It is evenly distributed on band muscle siding width direction center line；Each forming station point is about band muscle siding length direction center line pair
Claim.
The distance between adjacent forming station point is equal.The coil group center line is overlapped with forming station point, and makes this
Coil group on muscle siding at least 2/3 frontal projected area band muscle siding in.
Step 3, electro-magnetic forming:
Electro-magnetic forming tooling is installed, and is pressed in hydraulic compressing head on each flanging block of the electro-magnetic forming tooling.
The detailed process of the installation fixture for forming be will be filled with gum filler or 2A12-T4 aluminum alloy filler to
The band muscle siding of forming is mounted on 1 upper surface of cavity plate, make it is described have the surface of rib upward with muscle siding, and the two of the surface
Gasket is placed respectively at a short side.Flanging block is placed respectively in the upper surface of each gasket, it should by each flanging block
Band muscle siding compresses, and the gap between the lower surface of coil group and the rib upper surface with muscle siding is 5mm.
Electro-magnetic forming is carried out to the band muscle siding.The detailed process of the electro-magnetic forming is,
Mobile positioning slide plate, is moved to the coil group at the first work station point, and make center line and the institute of the coil group
State the coincidence of the first work station point.
Discharge switch is disconnected, the energy-storage capacitor of discharge loop reaches required voltage value 7.0kV by way of charging
Afterwards, that is, it is closed discharge switch, realizes energy-storage capacitor electric discharge.In discharge process, alternating current passes through coil group and generates magnetic field,
Vortex is induced in band muscle siding.The coil group and the magnetic field power drive band muscle siding generated with the interaction of muscle siding
Moment deforms, and is bonded cavity plate, and coil group discharge time is 400 μ s.
Electric discharge terminates, and after the band muscle siding deforms stopping completely, disconnects discharge switch, completes to the first work station point
Electro-magnetic forming.
Moving coil group-charging-the discharge process implemented in the first work station point is repeated, is continued to next work station point
Place carries out electro-magnetic forming.Until completing the electro-magnetic forming at all work station points.
Step 4, filler is taken out:
Described two flanging blocks and coil group are removed in hydraulic press release, remove band muscle siding and take out gum filler or
2A12-T4 aluminum alloy filler.
So far, it completes to band muscle siding filler electro-magnetic forming.
The purpose of the present invention is to provide a kind of band muscle siding filler electromagnetic forming methods, improve band muscle siding formability,
The defect for reducing siding corrugation during the existing siding electro-magnetic forming with muscle, rib unstability simultaneously, is finally reached target shape.
In the present invention, to realize that the electro-magnetic forming tooling to band muscle siding filler electro-magnetic forming, proposition includes coil group, adjusts
Position slide plate, cavity plate, two flanging blocks, gasket, filler, discharge switch and capacitor.Wherein: described two flanging blocks are located on cavity plate
Positioning slide plate is laid on described two flanging blocks in the length direction two sides on surface, and makes two short sides of the positioning slide plate
It is respectively placed in the mounting groove of each slide plate upper surface, and the positioning slide plate is enable to slide in the mounting groove, to drive
The coil group being fixed on the positioning slide plate is mobile.The coil group is located between two flanging blocks, and is fixed on the positioning
Slide plate lower surface is overlapped the center of circle of the coil group and the geometric center of the positioning slide plate.
There is gasket between described two flanging blocks lower surface and the gum filler upper surface, by changing gasket
Highly, the distance between coil lower surface and gum filler upper surface are adjusted to realize.
The coil group is composed in series by three layer flat plate spiral winding, and each layer plate spiral winding joins end to end.Three layers flat
Spacing between the adjacent surface of plate spiral winding is 4mm.Each plate spiral winding totally 10 circle, using becoming turn-to-turn away from knot
Structure makes spacing between each circle adjacent surface of plate spiral winding 0.2mm incremented by successively from the outside to the core.Each plate spiral winding
Internal diameter be 14mm, outer diameter 75mm.Insulating resin, filled three layer flat plate are filled between the conducting wire of the coil group
The gapless between layers of spiral winding makes filled coil form cylindrical body.The both ends of the coil group conducting wire respectively with
Discharge switch is connected with energy-storage capacitor, forms discharge loop.The discharge voltage U=7.0kV of the discharge loop, discharge capacity C
=160 μ F.
Process is being formed using electromagnetic forming technique for this component with Similarity of Local Characteristic Structure of muscle siding
In often occur siding corrugation, warpage, back-flexing, rib unstability lateral bending the defects of, the present invention by first band muscle siding net
Compartment filler carries out the mode of electro-magnetic forming again, effectively avoids drawbacks described above, realizes band muscle siding bending forming.
Compared with existing non-filling band muscle siding electromagnetic forming technique, the present invention has following advantageous effects:
1. inhibiting with the siding ridging defect in muscle siding forming process.Siding corrugation is due to lacking effective and continuing
Normal direction force constraint under the premise of, siding compared with huge pressing stress by generating.Metal packing is filled between the grid ribs at siding
Later, the effect due to metal packing by magnetic field force is equivalent to and increases the normal direction contact force of free margins siding material；Separately
Outside, after an impact, part kinetic energy is released siding by filler, and collision reaction amount is also smaller, therefore close to collision reaction area
Material compression concentrate situation be improved.Therefore, wall when metal packing electro-magnetic forming is conducive to control non-filling forming
Plate ridging defect.
2. reducing with muscle siding in the back-flexing degree close to die entrance region.Since band muscle siding is close to cavity plate
Radius area magnetic field force itself is weaker, and deformation velocity is relatively low, and suffered normal force effect is insufficient, and which results in band muscle siding is close
Back-flexing occurs at fillet, reduces mold degree.It is maximum with the gap between muscle siding and cavity plate in practical forming process
It can reach 10mm.Metal packing is covered by large area, the area that magnetic field force is applied on siding can be increased, enhanced suffered by it
Normal force, and then the region mold ability is improved, to control back-flexing defect.Addition aluminium closes between band muscle siding grid
After golden filler, 2.5mm can be down to the gap between muscle siding and cavity plate.
3. when avoiding band muscle siding forming the defects of rib unstability lateral bending.When band muscle siding electro-magnetic forming, due to rib
Two sides lack support, and what is generated in forming process is narrow boards plain bending, the phase of lengthways of rod and lateral rib due between
Interaction is easy to produce lateral bending defect.And after filling metal packing between the rib with muscle siding, the support to rib is realized,
The lateral bending phenomenon of lengthways of rod and lateral rib substantially eliminates.Therefore, metal packing electro-magnetic forming be conducive to control non-filling at
When shape the defects of rib unstability.
4. siding collision reaction phenomenon when weakening with the forming of muscle siding.Since electro-magnetic forming has the spy of high-speed deformation
Point, band muscle siding easily collide with cavity plate rebound, initiation siding reversal deformation, warpage not mold.Using gum filler into
When row electro-magnetic forming, by there is no any difference when siding institute is magnetic field force induced and non-filling, the phase interaction between rubber and siding
With causing siding deformation velocity to substantially reduce, siding deformation can be absorbed by rubber part, weaken collision reaction to play
Effect.When non-filling, siding maximum distortion speed is located at free margins center, and speed is up to 120m/s before colliding, after collision
Inverted speed is 57m/s.And gum filler squab panel VELOCITY DISTRIBUTION with non-filling when have it is dramatically different: firstly, maximum before collision
Speed is located at cross bar item；Secondly, collision front panel deformation velocity is 50m/s, maximum speed before colliding when not as good as non-filling
The half of value, reversal deformation speed is 30m/s after collision.Therefore, gum filler electro-magnetic forming is conducive to control non-filling forming
When siding collision reaction defect.
Detailed description of the invention
Attached drawing 1 is the structural schematic diagram with muscle siding filler electro-magnetic forming tooling of filled rubber；Wherein: Fig. 1 a is to overlook
Figure, Fig. 1 b be in Fig. 1 a A-A to half sectional view；Fig. 1 c is the B-B direction cross-sectional view in Fig. 1 a；
Attached drawing 2 is the structural schematic diagram of gasket；
Attached drawing 3 is the structural schematic diagram of cavity plate；Wherein: Fig. 3 a is main view；Fig. 3 b is top view；
Attached drawing 4 is the structural schematic diagram of flanging block；
Attached drawing 5 is band muscle wall panel structure schematic diagram；Wherein: Fig. 5 a is band muscle wall panel structure schematic diagram described in embodiment one；
Fig. 5 b is band muscle wall panel structure schematic diagram described in embodiment two；
Attached drawing 6 is the band muscle siding schematic diagram for having filler；Wherein: Fig. 6 a is gum filler schematic diagram；Fig. 6 b is that metal is filled out
Expect schematic diagram；
Attached drawing 7 is the structural schematic diagram of coil group；Wherein: Fig. 7 a is the schematic three dimensional views of coil group；Fig. 7 b is Fig. 7 a
Top view；Fig. 7 c is the side view of Fig. 7 a；
Attached drawing 8 is flow chart of the invention.
In figure: 1. cavity plates；2. flanging block；3. coil group；4. gum filler；5. band muscle siding；6. gasket；7. metal is filled out
Material；8. non-conductive rigid plastics gasket；9. discharge switch；10. energy-storage capacitor；11. slide plate of transposing；12. insulating resin.
Specific embodiment
Embodiment 1
The present embodiment is a kind of method using gum filler electro-magnetic forming with muscle siding, same with siding for realizing rib
When be bent.
The original blank with muscle siding 5 is 2A12-T4 aluminum alloy plate materials, and the band muscle siding is by siding and is located at the wall
The rib of plate upper surface forms, as shown in attached drawing 5a.The wall panel thickness is 2mm, length 230mm, width 150mm.It is described
Rib is formed by numerical control milling, to be orthogonal latticed, forms grid, the joining place for the rib that intersects in the siding upper surface
Using arc transition, the diameter of the circular arc is 3mm；The height of rib is 12mm, and width is 2mm；Lateral rib 2 is indulged
To rib 3.Spacing between adjacent 2 lateral ribs is 96mm, and the spacing between 2 lengthways of rod is 25mm.Described 2
Lateral rib is symmetrical about siding length direction center line；3 lengthways of rod are symmetrical about siding width direction center line.
The band muscle siding 5 forming length 100mm, width 150mm, formation zone geometric center and the band muscle siding whole geometry center are heavy
It closes.
The detailed process of the present embodiment is:
Step 1, filler between band muscle siding grid:
The filled rubber filler 4 in the grid with muscle siding 5, the gum filler use butadiene rubber.Each block of rubber is filled out
Expect high 12mm, outer dimension is identical as filled size of mesh opening, so that each face of gum filler is bonded completely with corresponding rib face,
Finally it is filled up completely the space between full rib.
Step 2, forming station point is determined:
Coil group center line is with the position on muscle siding when the determining forming station point is determining electro-magnetic forming.According to
Formula (1) determines forming station number according to the band muscle siding formation zone area and coil group lower surface area ratio
W。
In formula (1), U is the ratio with muscle siding formation zone area Yu coil group lower surface area；To the band
The ratio round of muscle siding formation zone area and coil group lower surface area.
When determining forming station number W is 1, which is located at band muscle siding geometric center.
When determining forming station number is greater than 1 and is odd number, one of forming station point is located at band muscle siding
Geometric center, remaining forming station point are uniformly distributed on band 5 width direction center line of muscle siding, and long about band muscle siding 5
It is symmetrical to spend direction center line.
When determining forming station number W is even number, which is divided into two groups, and by each forming station point
It is evenly distributed on band muscle siding width direction center line；Each forming station point is about band muscle siding length direction center line pair
Claim.
The distance between adjacent forming station point is equal.The coil group center line is overlapped with forming station point, and makes this
Coil group on muscle siding at least 2/3 frontal projected area band muscle siding in.
It is 2 after band muscle siding formation zone area and the rounding of coil group lower surface area ratio, therefore in the present embodiment
Forming station number W=2.According to above-mentioned Distribution Principles, two forming station points are respectively arranged on band 5 length direction center of muscle siding
Line two sides.Two forming station points are located on two points of A, B shown in attached drawing 5a, and A, B are located at band muscle siding width direction
It is symmetrical about band muscle siding length direction center line on center line.The position of described two forming station points, which should ensure that, works as coil
When group center line is overlapped with forming station point, which exists in the projected area with the orthographic projection on muscle siding at least 2/3
In band muscle siding.In the present embodiment, two neighboring forming station point is at a distance of 70mm.
Step 3, electro-magnetic forming:
The band muscle siding 5 to be formed that will be filled with gum filler 4 is mounted on 1 upper surface of cavity plate, makes the band muscle siding 5
There is the surface of rib upward, and places gasket 6 respectively at two short sides on the surface.In the upper surface of each gasket 6 point
Not Fang Zhi flanging block 2, the band muscle siding is compressed by each flanging block 2, the lower surface of coil group and the band muscle siding
Rib upper surface between gap be 5mm.
It is pressed in hydraulic compressing head on each flanging block, is fixed the band muscle siding by the hydraulic press.
Mobile positioning slide plate 11, coil group 3 is moved at the first work station point A, and make center line and the institute of the coil group
State the first work station point A coincidence.
Discharge switch 9 is disconnected, the energy-storage capacitor 10 of discharge loop after so that voltage value is reached 7.0kV, that is, is closed by charging
Discharge switch 9 is closed, realizes that energy-storage capacitor 10 discharges, in discharge process, alternating current passes through coil group 3 and generates magnetic field,
Vortex is induced in band muscle siding 5.The coil group and the magnetic field power drive band muscle siding 5 generated with the interaction of muscle siding
Moment deforms, and is bonded cavity plate 11.In the present embodiment, coil group discharge time is 400 μ s.
Electric discharge terminates, and after the band muscle siding deforms stopping completely, disconnects discharge switch 9, mobile positioning slide plate 11 will
Coil 3 is moved to second station point B by the first work station point A, and makes the center line and second station point B weight of the coil group
It closes.After energy-storage capacitor 10 is charged to voltage value 7.0kV, it is closed discharge switch 9, realizes that energy-storage capacitor 10 discharges, continues
Electric discharge forming is carried out, so that band muscle siding is deformed, is bonded cavity plate.After the band muscle siding 5 deforms stopping completely, electric discharge is disconnected
Switch 9, forming terminates.
Step 4, filler is taken out:
By hydraulic press release, described two flanging blocks 2 and coil 3 are removed, remove band muscle siding 5 and takes out gum filler 4.
Embodiment 2
The present embodiment is using fixture for forming described in embodiment 3 using the one kind of metal packing electro-magnetic forming with muscle siding
Method is bent simultaneously for realizing rib and siding.
The original blank with muscle siding 5 is 2A12-T4 aluminum alloy plate materials, and the band muscle siding is by siding and is located at the wall
The rib of plate upper surface forms, as shown in fig. 5b.The wall panel thickness is 2mm, length 230mm, width 200mm.It is described
Rib is formed by numerical control milling, to be orthogonal latticed, forms grid, the joining place for the rib that intersects in the siding upper surface
Using arc transition, the diameter of the circular arc is 3mm；The height of rib is 12mm, and width is 2mm；Lateral rib 3 is indulged
To rib 3.Spacing between adjacent 2 lateral ribs is 72mm, and the spacing between adjacent 2 lengthways of rod is 25mm.Institute
It is symmetrical about siding length direction center line to state 3 lateral ribs；3 lengthways of rod are about siding width direction center line
Symmetrically.The band muscle siding 5 forming length 100mm, width 200mm, formation zone geometric center and the band muscle siding whole geometry
Center is overlapped.
The forming process of the present embodiment the following steps are included:
Step 1: filler between band muscle siding grid
2A12-T4 aluminium alloy, the high 12mm of filler are filled between the grid with muscle siding 5.For the ease of being taken out after forming,
The cavity between full lengthways of rod is not fully filled in metal packing, but the gap 2mm is reserved between longitudinal center's rib,
Each face of remaining of filler is then bonded with corresponding rib side completely.Non-conductive rigid plastics pad is filled in the gap reserved
Piece 8, to guarantee that metal packing 7 can firmly be bonded rib.
Step 2, forming station point is determined:
Coil group center line is with the position on muscle siding when the determining forming station point is determining electro-magnetic forming.According to
Formula (1) determines forming station number according to the band muscle siding formation zone area and coil group lower surface area ratio
W。
In formula (1), U is band muscle siding formation zone area and coil group lower surface area ratio；The band muscle wall
Plate formation zone area and the coil group lower surface area ratio round.
When determining forming station number W is 1, which is located at band muscle siding geometric center.
When determining forming station number is greater than 1 and is odd number, one of forming station point is located at band muscle siding
Geometric center, remaining forming station point are uniformly distributed on band 5 width direction center line of muscle siding, and long about band muscle siding 5
It is symmetrical to spend direction center line.
When shaping number of stations W is even number, each forming station point is evenly distributed on band 5 width direction center line of muscle siding
On, and it is symmetrical about band 5 length direction center line of muscle siding.
The distance between adjacent forming station point is equal.The coil group center line is overlapped with forming station point, and makes this
Coil group on muscle siding at least 2/3 frontal projected area band muscle siding in.
It in the present embodiment, is 4 after band muscle siding formation zone area and coil group lower surface area ratio are rounded, because
This forming station number W=3.According to above-mentioned Distribution Principles, the first forming station point is located at band muscle siding geometric center, second and
Third forming station point is distributed in band 5 length direction center line two sides of muscle siding respectively, and about the length direction center line pair
Claim, three forming stations point is respectively positioned on band 5 width direction center line of muscle siding.The position of three forming stations point
When should ensure that coil group center line is overlapped with forming station point, coil group is in the projection with the projection at least 2/3 on muscle siding
Area is in band muscle siding.In the present embodiment, two adjacent forming station points are at a distance of 60mm.
Step 3, electro-magnetic forming:
The band muscle siding 5 for having filled filler is mounted on 1 upper surface of cavity plate, makes the surface for having rib with muscle siding 5
Upward, and at two short sides on the surface gasket 6 is placed respectively.Flanging block is placed respectively in the upper surface of each gasket 6
2, the band muscle siding is compressed by each flanging block 2, the lower surface of coil group and the rib upper surface with muscle siding
Between gap be 5mm
It is pressed in hydraulic compressing head on each flanging block, is fixed the band muscle siding by the hydraulic press.
Mobile positioning slide plate 11, coil group 3 is moved at the first work station point, and make the center line of the coil group with it is described
First work station point is overlapped.
Discharge switch 9 is disconnected, the energy-storage capacitor 10 of discharge loop reaches required voltage value by way of charging
After 7.0kV, that is, it is closed discharge switch 9, realizes that energy-storage capacitor 10 discharges, in discharge process, alternating current passes through coil group 3 simultaneously
Magnetic field is generated, induces vortex in band muscle siding 5.The coil group and the magnetic field force generated with the interaction of muscle siding drive
Dynamic band 5 moment of muscle siding deforms, and is bonded cavity plate 11.In the present embodiment, coil group discharge time is 400 μ s.
Electric discharge terminates, and after the band muscle siding deforms stopping completely, disconnects discharge switch 9, mobile positioning slide plate 11 will
Coil group 3 is moved to the second forming station point by the first forming station point, and makes the center line of the coil group and the second one-tenth described
Shape work station point is overlapped.After energy-storage capacitor 10 is charged to voltage value 7.0kV, it is closed discharge switch 9, realizes energy-storage capacitor 10
Electric discharge continues electric discharge forming, so that band muscle siding is deformed, is bonded cavity plate.
Electric discharge terminates, and after the band muscle siding deforms stopping completely, disconnects discharge switch 9, mobile positioning slide plate 11 will
Coil group 3 is moved to third forming station point by the second forming station point, and make the coil group center line and the third at
Shape work station point is overlapped.After energy-storage capacitor 10 is charged to voltage value 7.0kV, it is closed discharge switch 9, realizes energy-storage capacitor 10
Electric discharge continues electric discharge forming, so that band muscle siding is deformed, is bonded cavity plate.Complete stopping is deformed to the band muscle siding 5
Afterwards, discharge switch 9 is disconnected, forming terminates.
Step 4, filler is taken out:
By hydraulic press release, described two flanging blocks 2 and coil group 3 are removed, remove band muscle siding 5 and takes out metal packing
7 and non-conductive rigid plastics gasket 8.
Embodiment 3
The present embodiment is a kind of band muscle siding gum filler electro-magnetic forming tooling.
The used electro-magnetic forming tooling of the present embodiment includes band muscle siding 5, coil group 3, positioning slide plate 11, cavity plate 1, two
Flanging block 2, gasket 6, gum filler 4, discharge switch 9 and capacitor 10.Wherein: described two flanging blocks 2 are located at 1 upper surface of cavity plate
Length direction two sides, positioning slide plate 11 is laid on described two flanging blocks, and make two short sides point of the positioning slide plate
It is not placed in the mounting groove of each slide plate upper surface, and the positioning slide plate is enable to slide in the mounting groove, to drive solid
The coil group 3 being scheduled on the positioning slide plate is mobile.The coil group 3 is located between two flanging blocks, and is fixed on the positioning
11 lower surface of slide plate is overlapped the center of circle of the coil group and the geometric center of the positioning slide plate.
Gum filler 4 is separately filled between the rib with 5 upper surface of muscle siding.In described two flanging blocks 2
There is gasket 6 between lower surface and the gum filler upper surface, by the height of the adjustment gasket 6, to realize adjustment coil
Group the distance between 3 lower surfaces and gum filler upper surface.
The flanging block 2 is rectangular block.The flanging block upper surface is cascaded surface, the long side on the inside of the flanging block upper surface
Place is provided with the bar shaped concave surface for placing the positioning slide plate 11, forms the slideway of positioning slide plate.The depth of the slideway and institute
The height for stating positioning slide plate is identical.In the present embodiment, the length of described two flanging blocks 2 is 60mm, and width is 200mm,
Height is 70mm；The long 30mm of slideway, wide 200mm, deep 10mm.
The coil group 3 is composed in series by three layer flat plate spiral winding, and each layer plate spiral winding joins end to end.Three layers flat
Spacing between the adjacent surface of plate spiral winding is 4mm.The plate spiral winding is made of red copper, and is enameled wire.
Totally 10 circle is made between each circle adjacent surface of the plate spiral winding each plate spiral winding using circle pitch structure is become
Spacing 0.2mm incremented by successively from the outside to the core.In the present embodiment, the turn-to-turns of the plate spiral winding outmost turns is away from for 0.4mm, and second
The turn-to-turn of circle is away from for 0.6mm, and the turn-to-turn of third circle is away from for 0.8mm；The rest may be inferred, and the turn-to-turn of innermost circle is away from for 2.0mm.It is each described
The conductor cross-section of plate spiral winding is the rectangle of 2mm × 4mm.The internal diameter of each plate spiral winding is 14mm, outer diameter 75mm.
It is filled with insulating resin 12 between the conducting wire of the coil group 3, and in the upper surface of the coil group and lower surface also sealing
There is insulating resin, is wrapped up coil group sealing by the insulating resin.The layer of filled three layer flat plate spiral winding with
Gapless between layer makes filled coil group become diameter 80mm, the cylindrical body of high 60mm.The both ends of the coil group conducting wire point
It is not connect with discharge switch 9 and energy-storage capacitor 10, forms discharge loop.The discharge voltage U=7.0kV of the discharge loop, puts
Capacitor C=160 μ F.
The gasket 6 is made of 40Cr material, and length 60mm, width 200mm, spacer height H=S, S represent line
The lower surface of circle group 3 and the distance between the rib upper surface with muscle siding.In the present embodiment, the lower surface of coil group with
The gap between muscle siding upper surface is 5mm, therefore the height of the gasket is 5mm.
The cavity plate 1 is long 230mm, wide 200mm, and the rectangle of high 50mm is made of T10A material.The upper table of the cavity plate
Face is working face.Be cancave cambered surface at the middle part of the working face, the diameter of the cancave cambered surface is 80mm, and make the width of the cancave cambered surface with
The cavity plate it is of same size.The geometric center of the cancave cambered surface is overlapped with the geometric center of the cavity plate.The cavity plate it is curved
Qu Fangxiang is consistent with the bending direction of workpiece.Rounding off between the cancave cambered surface and cavity plate top surface plane, it is recessed to avoid this
Injury of the corner angle to workpiece surface between cambered surface and plane.
When work, by the upper surface to be formed for being placed in cavity plate 1 with muscle siding 5, and this is made to have the one of rib with muscle siding
Upwardly.The gum filler is filled in respectively in the grid between rib.In the band muscle siding two filled with gum filler
Gasket 6 is placed respectively in the upper surface of side.The band muscle siding to be formed is compressed by the flanging block 2, completes fixture for forming
With the assembly to be formed with muscle siding.Fixture for forming after assembly is placed in hydraulic press workbench with band muscle siding to be formed
On, the fixation of entire tooling is completed to the pressurization of flanging block 2 by pressure head.
Claims (8)
1. a kind of band muscle siding filler electromagnetic forming method, which is characterized in that detailed process is:
Step 1, filler between band muscle siding grid:
It is filled in the grid with muscle siding using butadiene rubber or 2A12-T4 aluminium alloy as filler；
Step 2, forming station is determined:
By formula (1), determined into according to the band muscle siding formation zone area and coil group lower surface area ratio
Shape number of stations W；
In formula (1), U is the ratio with muscle siding formation zone area Yu coil group lower surface area；To the band muscle wall
The ratio round of plate formation zone area and coil group lower surface area；
Step 3, electro-magnetic forming:
Electro-magnetic forming tooling is installed, and is pressed in hydraulic compressing head on each flanging block of the electro-magnetic forming tooling；
Electro-magnetic forming is carried out to the band muscle siding；The detailed process of the electro-magnetic forming is,
Mobile positioning slide plate, is moved to the coil group at the first work station point, and respectively at the work station point, and make the coil
The center line of group is overlapped with the first work station point A；
Discharge switch is disconnected, after the energy-storage capacitor of discharge loop reaches required voltage value 7.0kV by way of charging, i.e.,
It is closed discharge switch, realizes energy-storage capacitor electric discharge；In discharge process, alternating current passes through coil group and generates magnetic field, in band
Vortex is induced in muscle siding；The coil group and the magnetic field power drive band muscle siding moment generated with the interaction of muscle siding
High-speed deformation occurs, is bonded cavity plate；
Electric discharge terminates, and after the band muscle siding deforms stopping completely, disconnects discharge switch, completes to the electricity at the first work station point
Magnetic forming；
Repeat the moving coil group-charging-discharge process implemented in the first work station point, continue at next work station point into
Row electro-magnetic forming；Until completing the electro-magnetic forming at all work station points；
Step 4, filler is taken out:
Described two flanging blocks and coil are removed in hydraulic press release, are removed band muscle siding and are taken out gum filler or 2A12-T4 aluminium
Alloy packing；
So far, it completes to band muscle siding filler electro-magnetic forming.
2. band muscle siding filler electromagnetic forming method as described in claim 1, which is characterized in that when in the grid with muscle siding
When filling butadiene rubber, it is bonded each surface of the butadiene rubber completely with corresponding rib face；When in the grid with muscle siding
When filling 2A12-T4 aluminium alloy, make the 2A12-T4 aluminium alloy and the surface adjacent with longitudinal center's rib in muscle siding and
There is the gap 2mm between longitudinal center's rib, and fills non-conductive rigid plastics gasket in the gap.
3. band muscle siding filler electromagnetic forming method as described in claim 1, it is characterised in that:
When determining forming station number W is 1, which is located at band muscle siding geometric center；
When determining forming station number is greater than 1 and is odd number, one of forming station is located in band muscle siding geometry
The heart, remaining station are uniformly distributed on band muscle siding width direction center line, and about band muscle siding length direction center line pair
Claim；
When shaping number of stations W is even number, each forming station is evenly distributed on band muscle siding width direction center line, and is closed
It is symmetrical in band muscle siding length direction center line.
4. band muscle siding filler electromagnetic forming method as described in claim 1, it is characterised in that: the tool of the installation fixture for forming
Body process is to will be filled with the band muscle siding to be formed of gum filler or 2A12-T4 aluminum alloy filler to be mounted on table on cavity plate 1
Face, make it is described have the surface of rib upward with muscle siding, and place gasket respectively at two short sides on the surface；Described each
Flanging block is placed in the upper surface of gasket respectively, by each flanging block by the band muscle siding compress, the lower surface of coil group with
Gap between the rib upper surface with muscle siding is 5mm.
5. band muscle siding filler electromagnetic forming method as described in claim 1, it is characterised in that:
When determining forming station number W is 1, which is located at band muscle siding geometric center；
When determining forming station number W is greater than 1 and is odd number, one of forming station point is located at band muscle siding geometry
Center, remaining station are uniformly distributed on band muscle siding width direction center line, and about band muscle siding length direction center line
Symmetrically；
When determining forming station number W is even number, which is divided into two groups, and each forming station point is uniform
It is distributed on band muscle siding width direction center line；Each forming station point is symmetrical about band muscle siding length direction center line；
The distance between adjacent forming station point is equal；The coil group center line is overlapped with forming station point, and makes the coil
Group on muscle siding at least 2/3 frontal projected area band muscle siding in.
6. band muscle siding filler electromagnetic forming method as described in claim 1, which is characterized in that the coil group discharge time is
400μs。
7. band muscle siding filler electromagnetic forming method as described in claim 1, which is characterized in that the electro-magnetic forming tooling includes
Coil group, positioning slide plate, cavity plate, two flanging blocks, gasket, gum filler, discharge switch and capacitor；Wherein: described two pressures
Side block is located at the length direction two sides of cavity plate upper surface, lays positioning slide plate on described two flanging blocks, and make the positioning
Two short sides of slide plate are respectively placed in the mounting groove of each slide plate upper surface, and enable the positioning slide plate in the mounting groove
Sliding, to drive the coil being fixed on the positioning slide plate mobile；The coil is located between two flanging blocks, and fixed
In the positioning slide plate lower surface, it is overlapped the center of circle of the coil and the geometric center of the positioning slide plate；
There is gasket between described two flanging blocks lower surface and the gum filler upper surface, passes through the height of the adjustment gasket
Degree adjusts the distance between coil lower surface and gum filler upper surface to realize.
8. band muscle siding filler electromagnetic forming method as claimed in claim 7, which is characterized in that the coil group is by three layer flat plate
Spiral winding is composed in series, and each layer plate spiral winding joins end to end；Between between the adjacent surface of three layer flat plate spiral winding
Away from for 4mm；Each plate spiral winding totally 10 circle makes each circle neighboar lists of the plate spiral winding using circle pitch structure is become
Spacing between face 0.2mm incremented by successively from the outside to the core；The internal diameter of each plate spiral winding is 14mm, outer diameter 75mm；Institute
It states and is filled with insulating resin between the conducting wire of coil group, the gapless between layers of filled three layer flat plate spiral winding,
Filled coil is set to form cylindrical body；The both ends of the coil group conducting wire are connect with discharge switch and energy-storage capacitor respectively, shape
At discharge loop；The discharge voltage U=7.0kV of the discharge loop, discharge capacity C=160 μ F.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112743302A (en) * | 2020-12-29 | 2021-05-04 | 天津航天长征火箭制造有限公司 | Method for controlling forming precision of large-diameter-thickness-ratio non-uniform sunken milling grid wallboard |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10207655A1 (en) * | 2002-02-20 | 2003-08-28 | Moritz Beerwald & Artur Hensel | Spiral coil delivering powerful electromagnetic pulses to shape metal sheet, has band of variable thickness wound into clock spring-like configuration |
| CN102078895A (en) * | 2010-11-11 | 2011-06-01 | 西北工业大学 | Method for forming large complex thin-wall shell with circumferential inner ribs |
| CN103464564A (en) * | 2013-09-04 | 2013-12-25 | 西北工业大学 | Electromagnetic forming device and forming method for aluminum alloy rib plate |
| CN104646475A (en) * | 2015-03-05 | 2015-05-27 | 吉林大学 | Multi-point forming method for whole aluminum alloy wall plate of aircraft |
| CN106710777A (en) * | 2017-03-15 | 2017-05-24 | 福州大学 | Electromagnetic forming coil structure and manufacturing method thereof |
-
2019
- 2019-04-01 CN CN201910257363.6A patent/CN109877211A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10207655A1 (en) * | 2002-02-20 | 2003-08-28 | Moritz Beerwald & Artur Hensel | Spiral coil delivering powerful electromagnetic pulses to shape metal sheet, has band of variable thickness wound into clock spring-like configuration |
| CN102078895A (en) * | 2010-11-11 | 2011-06-01 | 西北工业大学 | Method for forming large complex thin-wall shell with circumferential inner ribs |
| CN103464564A (en) * | 2013-09-04 | 2013-12-25 | 西北工业大学 | Electromagnetic forming device and forming method for aluminum alloy rib plate |
| CN104646475A (en) * | 2015-03-05 | 2015-05-27 | 吉林大学 | Multi-point forming method for whole aluminum alloy wall plate of aircraft |
| CN106710777A (en) * | 2017-03-15 | 2017-05-24 | 福州大学 | Electromagnetic forming coil structure and manufacturing method thereof |
Non-Patent Citations (3)
| Title |
|---|
| GUO, KUN等: "Electromagnetic incremental forming of integral panel under different discharge conditions", 《JOURNAL OF MANUFACTURING PROCESSES》 * |
| JINQIANG TAN等: "Dependence on forming parameters of an integral panel during the electromagnetic incremental forming process", 《中国航空学报（英文版）》 * |
| 张士宏等: "整体壁板填料滚弯成形工艺研究", 《锻压技术》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112743302A (en) * | 2020-12-29 | 2021-05-04 | 天津航天长征火箭制造有限公司 | Method for controlling forming precision of large-diameter-thickness-ratio non-uniform sunken milling grid wallboard |
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Application publication date: 20190614 |