CN105252768A - Verifying cover plate and verifying method used for formation of special-shaped composite material foam interlayer workpiece - Google Patents
Verifying cover plate and verifying method used for formation of special-shaped composite material foam interlayer workpiece Download PDFInfo
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- CN105252768A CN105252768A CN201510582083.4A CN201510582083A CN105252768A CN 105252768 A CN105252768 A CN 105252768A CN 201510582083 A CN201510582083 A CN 201510582083A CN 105252768 A CN105252768 A CN 105252768A
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Abstract
The invention discloses a verifying cover plate and verifying method used for formation of a special-shaped composite material foam interlayer workpiece. The special-shaped composite material foam interlayer workpiece is formed by gluing a foam core, partition plates and outer skin together. The outer skin is provided with a pointed angle and/or arc areas. The glue joint position between the foam core and the pointed angle and/or the arc areas of the outer skin is filled with polystyrene foam. The verifying cover plate is matched with the outer skin in shape. The inner molded surface of the verifying cover plate is identical to the inner molded surface of the outer skin. A plurality of through holes are formed in the pointed angle and/or the arc areas of the verifying cover plate. By means of the verifying cover plate, the problem that the filling amount of the polystyrene foam is uncontrollable is solved, and the inner glue joint quality and overall dimension accuracy of a part are improved.
Description
Technical field
The present invention relates to composite processing field shaping technique, be specifically related to a kind of verification cover plate shaping for special-shaped composite foam layer product and method of calibration.
Background technology
Foam Core Sandwich Structure a kind ofly adopts polymer matrix composites as covering, adopts foamed plastics as the sandwich form of core.Because its intensity is high, rigidity is large, lightweight, endurance, the advantage such as corrosion-resistant, this type of product extensive use in the advanced configuration such as Aero-Space.Some Foam Core Sandwich Structure complex contours and combination property require higher, and in order to take into account its external dimensions precision and inner bonding quality simultaneously, its assembly technology must strictly be controlled.Such as, certain special-shaped composite foam layer product adopts 1 exterior skin, 1 foam core and two separator glue to be connected into type to form as shown in Figure 1, the wedge angle wherein gluedd joint at foam core and exterior skin and circular arc sector need filling-foam glue J-118, ensure to coordinate gapless between part.But this product structure close and between part mating surface more, in assembling process, foamed glue filling situation is not visible, if foamed glue local is filled the discontented product inside that will cause and is generated space, excessively article surface will be caused to occur bulge phenomenon if foamed glue local is filled, or assembling dislocation causes dimensional accuracy defective, scrappage is high.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, a kind of verification cover plate shaping for special-shaped composite foam layer product and method of calibration are provided, for checking the fit clearance between part in Foam Core Sandwich Structure product forming process, solve the uncontrollable problem of foamed glue loading, improve inside bonding quality and the appearance and size precision of part.
The technical solution used in the present invention is:
A kind of verification cover plate shaping for special-shaped composite foam layer product, described special-shaped composite foam layer product adopts foam core, dividing plate and exterior skin glued joint shaping, described exterior skin has wedge angle and/or circular arc sector, the weld filling-foam glue of described foam core and exterior skin wedge angle and/or circular arc sector, the mating shapes of described verification cover plate and exterior skin, the inner profile of described verification cover plate is consistent with the inner profile of exterior skin, and the wedge angle on described verification cover plate and/or circular arc sector are provided with several through hole.
Described a kind of verification cover plate shaping for special-shaped composite foam layer product, described verification cover plate is vulcanized rubber verification cover plate.
Described a kind of verification cover plate shaping for special-shaped composite foam layer product, the thickness of described verification cover plate is 0.2-0.5mm.
Described a kind of verification cover plate shaping for special-shaped composite foam layer product, wedge angle and/or the circular arc sector uniform setting of described through hole on described verification cover plate, the spacing of adjacent through-holes is 5-10mm.
Described a kind of verification cover plate shaping for special-shaped composite foam layer product, the aperture of described through hole is 2.5mm.
For a preparation method for the shaping verification cover plate of special-shaped composite foam layer product, comprise the steps:
1) first prepare exterior skin, forming frock prepares exterior skin by exterior skin prepreg laying;
2) by exterior skin pattern CNC cutting, and with the forming frock of exterior skin for formpiston completes the laying verifying cover plate frock prepreg;
3) carry out drilling through hole process at the wedge angle and/or circular arc sector that verify cover plate.
For the method for calibration that special-shaped composite foam layer product is shaping, comprise the steps:
1) pre-assembled, at dividing plate and foam core surface mount glued membrane, fixes exterior skin, foam core and baffle combination, and wedge angle between exterior skin and foam core and/or circular arc sector filling-foam glue;
2) verify, utilize verification cover plate to replace exterior skin, with foam core and baffle combination, then utilize the through hole on verification cover plate to observe the occupied state of foamed glue on foam core, if foamed glue is fitted closely with verification cover plate, then prove foam core and verification cover plate no-float herein; If there is fit clearance, then carry out tricklely filling up or cutting down to foamed glue in relevant position, and then utilize the verification of verification cover plate, till foam core coordinates gapless with verification cover plate;
3), after verification, remove verification cover plate, again exterior skin and foam core, baffle combination are fixed.
Described a kind of method of calibration shaping for special-shaped composite foam layer product, also comprising step 4) prefoam verifies again, exterior skin and foam core, baffle combination are carried out encapsulating, entering tank after fixing, make foamed glue prefoam, then repeat step 2) again verify.
Described a kind of method of calibration shaping for special-shaped composite foam layer product, before prefoam, wraps up one deck non-porous release film at foam core outer surface without the position of foamed glue.
Described a kind of method of calibration shaping for special-shaped composite foam layer product, the temperature of foamed glue prefoam is 70-80 DEG C.
The present invention has following beneficial effect:
The present invention adopts porous to verify cover plate and tests the matching relationship of special-shaped Foam Core Sandwich Structure product in assembling process, achieves foamed glue and fills the visual of situation.Successfully solve the Non-Destructive Testing cavity unsticking that occurs in foam core and composite material skin Bonding Process or cellular glue-line, the problem such as bulge, surface irregularity, foam core are subsided, thoroughly improve inside bonding quality and the appearance and size precision of product, ensure that the smooth payment of product, increase work efficiency, save a large amount of manufacturing cost.
A kind of verification cover plate shaping for special-shaped composite foam layer product of the present invention and method of calibration can be widely used in the equipment manufacture industries such as Aeronautics and Astronautics.This type of porous verification cover plate is applicable to the preparation of any type of composite foam layer product, is particularly useful for complex-shaped and that structure is closed interlayer product shaping.
Accompanying drawing explanation
Fig. 1 is the assembling schematic diagram of certain special-shaped composite foam layer product in the embodiment of the present invention.
Fig. 2 is the right axle survey view of verification cover plate shaping for special-shaped composite foam layer product in the embodiment of the present invention.
Fig. 3 is the left axle survey view of verification cover plate shaping for special-shaped composite foam layer product in the embodiment of the present invention.
Wherein 1-exterior skin, 2-foam core, 3-obturages dividing plate, 4-connecting partition, and 5-abnormity composite foam layer product, 6-verifies cover plate, 7-through hole.
Detailed description of the invention
A kind of verification cover plate shaping for special-shaped composite foam layer product, described special-shaped composite foam layer product adopts foam core, dividing plate and exterior skin glued joint shaping, described exterior skin has wedge angle and/or circular arc sector, the weld filling-foam glue of described foam core and exterior skin wedge angle and/or circular arc sector, the mating shapes of described verification cover plate and exterior skin, the inner profile of described verification cover plate is consistent with the inner profile of exterior skin, and the wedge angle on described verification cover plate and/or circular arc sector are provided with several through hole.Described verification cover plate is vulcanized rubber verification cover plate.The thickness of described verification cover plate is 0.2-0.5mm.Wedge angle and/or the circular arc sector uniform setting of described through hole on described verification cover plate, the spacing of adjacent through-holes is 5-10mm.The aperture of described through hole is 2.5mm.
For a preparation method for the shaping verification cover plate of special-shaped composite foam layer product, comprise the steps:
1) first prepare exterior skin, forming frock prepares exterior skin by exterior skin prepreg laying;
2) by exterior skin pattern CNC cutting, and with the forming frock of exterior skin for formpiston completes the laying verifying cover plate frock prepreg;
3) carry out drilling through hole process at the wedge angle and/or circular arc sector that verify cover plate.
For the method for calibration that special-shaped composite foam layer product is shaping, comprise the steps:
1) pre-assembled, at dividing plate and foam core surface mount glued membrane, fixes exterior skin, foam core and baffle combination, and wedge angle between exterior skin and foam core and/or circular arc sector filling-foam glue;
2) verify, utilize verification cover plate to replace exterior skin, with foam core and baffle combination, then utilize the through hole on verification cover plate to observe the occupied state of foamed glue on foam core, if foamed glue is fitted closely with verification cover plate, then prove foam core and verification cover plate no-float herein; If there is fit clearance, then carry out tricklely filling up or cutting down to foamed glue in relevant position, and then utilize the verification of verification cover plate, till foam core coordinates gapless with verification cover plate;
3), after verification, remove verification cover plate, again exterior skin and foam core, baffle combination are fixed.
4) prefoam verifies again, one deck non-porous release film is wrapped up without the position of foamed glue at foam core outer surface, exterior skin and foam core, baffle combination are carried out encapsulating, entering tank after fixing, make foamed glue be 70-80 DEG C in temperature and carrying out prefoam, then repeat step 2) again verify.
Embodiment
Certain special-shaped composite foam layer product 5 adopts 1 exterior skin, 1,1 foam core 2 and two dividing plate (dividing plates 3 of obturaging as shown in Figure 1, connecting partition 4) glued joint shaping forming, the wedge angle wherein gluedd joint at foam core and exterior skin and circular arc sector need filling-foam glue J-118, ensure to coordinate gapless between part.
A kind of verification cover plate shaping for special-shaped composite foam layer product
The mating shapes of this verification cover plate 6 and certain special-shaped composite foam layer product 5 exterior skin 1 as Figure 2-3, the inner profile of verification cover plate 6 is consistent with the inner profile of exterior skin 1, the uniform setting of wedge angle on this verification cover plate 6 and circular arc sector is provided with several through hole 7, the aperture of through hole 7 is 2.5mm, the spacing of adjacent through-holes 7 is 5mm, this verification cover plate 6 is vulcanized rubber verification cover plate 6, and thickness is 0.2-0.5mm.
A kind of preparation method of the verification cover plate shaping for special-shaped composite foam layer product
Comprise the steps:
1) first prepare exterior skin 1, forming frock prepares exterior skin 1 by exterior skin prepreg laying;
2) by exterior skin 1 pattern CNC cutting, and with the forming frock of exterior skin 1 for formpiston completes the laying verifying cover plate frock prepreg; Ensure that verification cover plate 6 is consistent with exterior skin 1 inner profile.
3) carry out drilling through hole 7 at the wedge angle and circular arc sector that verify cover plate 6 to process.
A kind of method of calibration shaping for special-shaped composite foam layer product
Comprise the steps:
1) pre-assembled, at dividing plate and foam core 2 surface mount glued membrane, fixes exterior skin 1, foam core 2 and baffle combination, and wedge angle between exterior skin 1 and foam core 2 and circular arc sector filling-foam glue;
2) verify, utilize verification cover plate 6 to replace exterior skin 1, with foam core 2 and baffle combination, ensure that overall outer dimensions meets digital-to-analogue requirement, then utilize the through hole 7 on verification cover plate 6 to observe the occupied state of foamed glue on foam core 2.If foamed glue is fitted closely with verification cover plate 6, then prove foam core 2 and verification cover plate 6 no-float herein; If there is fit clearance, then carry out tricklely filling up or cutting down to foamed glue in relevant position, avoid repairing excessively, and then utilize verification cover plate 6 to verify, until foam core 2 with verify till cover plate 6 coordinates gapless;
3), after verification, remove verification cover plate 6, again exterior skin 1 and foam core 2, baffle combination are fixed.
4) prefoam verifies again, glued joint to prevent foam core 2 and exterior skin 1, one deck non-porous release film is wrapped up at foam core 2 outer surface without the position of foamed glue before prefoam, and then exterior skin 1 and foam core 2, baffle combination are carried out encapsulating, entering tank after fixing, make foamed glue be 70-80 DEG C in temperature and carry out prefoam, then step 2 is repeated) again verify, the harmony coordinated between each part after checking foaming, badly trickleer finishing is carried out to foamed glue if coordinate.
5) finally utilize exterior skin 1 to replace verification cover plate 6 and foam core 2 and baffle combination, ensure that overall outer dimensions meets digital-to-analogue requirement.
Because verification cover plate 6 and exterior skin 1 are prepared on same forming frock, the two inner profile is consistent, therefore the matching relationship of foam core 2 and verification cover plate 6 also reflects the matching relationship between foam core 2 and exterior skin 1 indirectly, ensures the assembly relation that this type of sandwich is final and bonding quality by the increase and decrease of foamed glue loading.
Claims (10)
1. one kind for the shaping verification cover plate of special-shaped composite foam layer product, described special-shaped composite foam layer product adopts foam core, dividing plate and exterior skin glued joint shaping, described exterior skin has wedge angle and/or circular arc sector, the weld filling-foam glue of described foam core and exterior skin wedge angle and/or circular arc sector, it is characterized in that, the mating shapes of described verification cover plate and exterior skin, the inner profile of described verification cover plate is consistent with the inner profile of exterior skin, and the wedge angle on described verification cover plate and/or circular arc sector are provided with several through hole.
2. a kind of verification cover plate shaping for special-shaped composite foam layer product according to claim 1, is characterized in that, described verification cover plate is vulcanized rubber verification cover plate.
3. a kind of verification cover plate shaping for special-shaped composite foam layer product according to claim 1, it is characterized in that, the thickness of described verification cover plate is 0.2-0.5mm.
4. a kind of verification cover plate shaping for special-shaped composite foam layer product according to claim 1, is characterized in that, wedge angle and/or the circular arc sector uniform setting of described through hole on described verification cover plate, the spacing of adjacent through-holes is 5-10mm.
5. a kind of verification cover plate shaping for special-shaped composite foam layer product according to claim 1, it is characterized in that, the aperture of described through hole is 2.5mm.
6., for a preparation method for the shaping verification cover plate of special-shaped composite foam layer product, it is characterized in that, comprise the steps:
1) first prepare exterior skin, forming frock prepares exterior skin by exterior skin prepreg laying;
2) by exterior skin pattern CNC cutting, and with the forming frock of exterior skin for formpiston completes the laying verifying cover plate frock prepreg;
3) carry out drilling through hole process at the wedge angle and/or circular arc sector that verify cover plate.
7., for the method for calibration that special-shaped composite foam layer product is shaping, it is characterized in that, comprise the steps:
1) pre-assembled, at dividing plate and foam core surface mount glued membrane, fixes exterior skin, foam core and baffle combination, and wedge angle between exterior skin and foam core and/or circular arc sector filling-foam glue;
2) verify, utilize verification cover plate to replace exterior skin, with foam core and baffle combination, then utilize the through hole on verification cover plate to observe the occupied state of foamed glue on foam core, if foamed glue is fitted closely with verification cover plate, then prove foam core and verification cover plate no-float herein; If there is fit clearance, then carry out tricklely filling up or cutting down to foamed glue in relevant position, and then utilize the verification of verification cover plate, till foam core coordinates gapless with verification cover plate;
3), after verification, remove verification cover plate, again exterior skin and foam core, baffle combination are fixed.
8. a kind of method of calibration shaping for special-shaped composite foam layer product according to claim 7, it is characterized in that, also comprising step 4) prefoam verifies again, exterior skin and foam core, baffle combination are carried out encapsulating, entering tank after fixing, make foamed glue prefoam, then repeat step 2) again verify.
9. a kind of method of calibration shaping for special-shaped composite foam layer product according to claim 8, is characterized in that, before prefoam, wrap up one deck non-porous release film at foam core outer surface without the position of foamed glue.
10. a kind of method of calibration shaping for special-shaped composite foam layer product according to claim 8, it is characterized in that, the temperature of foamed glue prefoam is 70-80 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510582083.4A CN105252768B (en) | 2015-09-14 | 2015-09-14 | A kind of verification cover plate and method of calibration for the shaping of special-shaped composite foam layer product |
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| CN201510582083.4A CN105252768B (en) | 2015-09-14 | 2015-09-14 | A kind of verification cover plate and method of calibration for the shaping of special-shaped composite foam layer product |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113290872A (en) * | 2021-03-31 | 2021-08-24 | 成都飞机工业（集团）有限责任公司 | Gluing method for checking assembly after pre-foaming positioning sandwich |
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