CN114441278A - Encapsulating method and device for composite material reinforced wall plate test piece for airplane - Google Patents
Encapsulating method and device for composite material reinforced wall plate test piece for airplane Download PDFInfo
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- CN114441278A CN114441278A CN202111563664.5A CN202111563664A CN114441278A CN 114441278 A CN114441278 A CN 114441278A CN 202111563664 A CN202111563664 A CN 202111563664A CN 114441278 A CN114441278 A CN 114441278A
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- reinforced wall
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- 238000012360 testing method Methods 0.000 title claims abstract description 110
- 239000002131 composite material Substances 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000004382 potting Methods 0.000 claims abstract description 29
- 238000011049 filling Methods 0.000 claims abstract description 22
- 238000007789 sealing Methods 0.000 claims abstract description 18
- 238000002360 preparation method Methods 0.000 claims abstract description 12
- 238000006073 displacement reaction Methods 0.000 claims abstract description 9
- 238000013461 design Methods 0.000 claims abstract description 8
- 238000005538 encapsulation Methods 0.000 claims description 19
- 239000011347 resin Substances 0.000 claims description 12
- 229920005989 resin Polymers 0.000 claims description 12
- 238000004140 cleaning Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 230000007547 defect Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 239000011241 protective layer Substances 0.000 claims description 3
- 238000007711 solidification Methods 0.000 claims description 3
- 230000008023 solidification Effects 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 239000010410 layer Substances 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 2
- 238000012669 compression test Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 239000011157 advanced composite material Substances 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013112 stability test Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/36—Embedding or analogous mounting of samples
Abstract
The invention discloses a method and a device for encapsulating a composite material stiffened wall plate test piece for an airplane, and relates to the technical field of composite material manufacturing. This embedment device includes: the fixed bottom plate is arranged on the preparation space terrace; the support frame is arranged on the fixed base plate and used for providing rigidity support in a preparation space for filling and sealing the reinforced wall plate test piece; the test piece positioning assembly is arranged on the support frame and used for limiting the transverse/lateral displacement of the reinforced wall plate test piece; and the potting box positioning assembly is detachably arranged on the fixed bottom plate and is used for limiting the transverse/lateral displacement of the potting box. The scheme of the invention is used for preparing the filling end of the composite material reinforced wall plate, and can ensure good positioning of the reinforced wall plate type test piece during filling, so that the form and position tolerance meets the design requirement, and excellent surface quality of the filling end is obtained.
Description
Technical Field
The invention relates to the technical field of composite material manufacturing, in particular to a filling and sealing method and device for filling and sealing ends of a composite material reinforced wall plate for an airplane.
Background
The large-scale use of the advanced composite material structure is one of the development trends of design analysis technology, has obvious effects of improving the aeroelasticity and reducing the weight of the structure, and is beneficial to improving the comprehensive efficiency of the structure. The composite structural integrity verification must meet strength, stiffness, fatigue and damage tolerance, durability and functional requirements, so all critical composite parts must be analyzed and verified using building block testing methods.
The composite material reinforced wallboard is a common structural form in the field of airplane design, generally comprises a skin and a stringer, and in the primary design stage of an airplane, in order to verify the bearing capacity and the analysis method of a typical reinforced wallboard, a wallboard compression stability test is one of important components in a composite material building block type test. The wallboard compression test piece is usually formed by encapsulating resin at two ends of the test piece and configuring a metal sleeve to form a loading end, so as to be used for clamping the compression test machine and the test piece. In order to prevent bending damage of the test piece caused by eccentric loading, strict requirements are imposed on the form and position tolerance of the filling end of the test piece; meanwhile, the high-quality filling and sealing end of the test piece is also beneficial to debugging of test stress and strain, and the test precision is improved, so that a set of reasonable filling and sealing method and device are particularly important.
Disclosure of Invention
The invention aims to provide a filling and sealing method and a filling and sealing device for a composite material reinforced wall plate test piece, which are used for preparing a filling and sealing end of a composite material reinforced wall plate, can ensure good positioning during filling and sealing of the reinforced wall plate test piece, ensure that form and position tolerance meets design requirements, and obtain excellent surface quality of the filling and sealing end.
According to a first aspect of the technical scheme of the invention, the invention provides a composite material reinforced wall plate test piece embedding device, which comprises:
the fixed bottom plate is arranged on the preparation space terrace;
the support frame is arranged on the fixed base plate and used for providing rigidity support in a preparation space for filling and sealing the reinforced wall plate test piece;
the test piece positioning assembly is arranged on the support frame and used for limiting the transverse/lateral displacement of the reinforced wall plate test piece;
and the potting box positioning assembly is detachably arranged on the fixed bottom plate and is used for limiting the transverse/lateral displacement of the potting box.
Furthermore, the fixed bottom plate is of a flat plate structure, the upper part of the fixed bottom plate is provided with a bolt hole, and the fixed bottom plate is fixedly arranged on the preparation space terrace through bolts;
further, the holder includes: the vertical plate is vertically and fixedly installed on the fixing base plate, one end of the inclined strut is fixedly connected to the vertical plate, the other end of the inclined strut is fixedly connected to the fixing base plate and plays a supporting role, the slide rail is connected to the vertical plate, and bolt holes are uniformly formed in the slide rail.
Further, the test piece positioning assembly comprises a first positioning plate assembly and a second positioning plate assembly which are installed on the vertical surface of the vertical plate of the support frame.
Further, first locating plate subassembly and second locating plate subassembly are double-deck composite construction, include:
the outer positioning plate is provided with a positioning groove and used for clamping a reinforced wall plate test piece;
the inner positioning plate is of a groove-shaped machining structure and is used for limiting the lateral displacement of the reinforced wall plate test piece;
the adjusting block is positioned between the inner positioning plate and the outer positioning plate and used for adjusting the height between the inner positioning plate and the outer positioning plate;
furthermore, the inner positioning plate, the outer positioning plate and the adjusting block are mechanically connected through bolts so as to be convenient to disassemble;
furthermore, the first positioning plate assembly is connected with a sliding rail bolt on the support frame through a sliding block, can slide in a longitudinal space and is suitable for test pieces with different length sizes;
furthermore, the second positioning plate component is fixedly connected with the support frame;
further, the potting box positioning assembly includes:
the transverse positioning block is arranged on the main reference surface of the potting box;
the lateral positioning blocks are arranged at two ends of the encapsulation box;
and the sliding auxiliary positioning block is arranged on the outer side of the encapsulation box.
Furthermore, the transverse positioning block, the lateral positioning block and the sliding auxiliary positioning block are mechanically connected with the fixed base plate through bolts and are detachable structures.
According to a second aspect of the technical scheme of the invention, a composite material reinforced wall plate test piece embedding method is provided, the method adopts the composite material reinforced wall plate test piece device according to any one of the aspects above to carry out embedding, and the embedding method comprises the following steps:
1) fixedly installing the assembled encapsulating device on the preparation space terrace, and locking the encapsulating device through bolts;
2) according to the configuration and the size of a digital model of the reinforced wall plate test piece, a test piece positioning assembly and an encapsulation box positioning assembly are initially adjusted;
3) positioning through a positioning assembly of the potting box according to the datum of the potting box of the reinforced wall plate test piece;
4) placing the reinforced wallboard test piece into a positioned encapsulation box, attaching a main reference surface of the reinforced wallboard test piece to the inner positioning plate, attaching a side reference surface of the reinforced wallboard test piece to the left adjusting block in the first/second positioning plate assembly, and contacting the lower end surface of the test piece with the fixed bottom plate to ensure the verticality of the reinforced wallboard test piece and the fixed bottom plate;
5) cleaning and checking the encapsulating box and the encapsulating end of the test piece, and keeping the encapsulating box and the encapsulating end of the test piece dry and clean;
6) weighing the components of the encapsulating resin, mixing the components in proportion, and fully and uniformly stirring the components;
7) after the pre-curing reaction of the encapsulating resin gel, performing secondary filling on the defects of surface shrinkage cavities, local depressions, air holes and the like, and curing;
8) after the solidification is finished, disassembling the test piece, and cleaning redundant resin and the surface protective layer of the test piece surface;
9) further, inverting the reinforced wall plate test piece, encapsulating the other end of the test piece, and repeating the arrangement 1) -8) to complete encapsulation of the whole test piece;
10) and (4) inspecting the reinforced wall plate test piece, and performing three-coordinate detection to verify whether the form and position tolerance of the reinforced wall plate test piece meets the design requirement.
The invention has the beneficial effects that:
the invention provides a test piece encapsulating method and a device, which have the beneficial effects that:
1. the test piece body is fully positioned through the first positioning plate component and the second positioning plate component; the positioning of the filling and sealing end is fully completed through the filling and sealing box positioning assembly and resin filling and sealing are assisted; the encapsulation of the main body of the test piece can be completed by adjusting the mutual position relationship of the two sets of positioning systems, and the test piece with similar configuration can be reused by the device;
2. the encapsulating device disclosed by the invention is mainly used for positioning the test piece and the encapsulating box through surface contact, and the upper positioning plate surface contact type and the lower positioning plate surface contact type are adopted for main reference positioning of the test piece, so that compared with point contact type positioning, the positioning precision is high, the pre-tightening clamping effect is better, and especially for large-size test pieces; the lateral reference of the test piece is positioned by adopting the clamping groove type surface contact of the positioning plate, and the tolerance is accumulated in a single direction, so that the adjustment and the measurement are convenient;
the transverse, lateral and auxiliary surfaces of the positioning component of the potting box are in contact positioning, the positioning is sufficient, the deformation of the potting box caused by the heat accumulation of the potting resin can be prevented, and the surface quality of the potting end is ensured;
3. the combined form of sliding kinematic pair and bolt connection between the first positioning plate component and the support frame is adopted, so that the tool is suitable for encapsulating test pieces with different length sizes, can be repeatedly utilized, and saves cost
4. The encapsulation method of the encapsulation device is simple and easy to understand, is convenient for workers to operate, and can improve the production efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is an isometric view of a potting apparatus according to an embodiment of the invention;
FIG. 2 is a schematic view of a base plate and a bracket according to an embodiment of the invention;
FIG. 3 is a schematic view of a locating plate assembly according to an embodiment of the present invention;
figure 4 is a schematic view of a potting cartridge positioning assembly according to an embodiment of the present invention.
The following further describes embodiments of the present invention with reference to the drawings. The same or similar reference numbers in the drawings identify the same or similar structural features throughout. The embodiments of the present invention described below in conjunction with the accompanying drawings are illustrative and are not intended to limit the present invention.
In the description of the embodiments of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "left", "right", "vertical", "horizontal", "upper", "lower", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element being referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the scope of the present invention.
Examples
The concrete implementation mode of the test piece encapsulating method and the test piece encapsulating device is as follows:
1) referring to fig. 1, a test piece encapsulating method and a device thereof comprise a bottom plate 1, a support frame 2, an upper positioning plate assembly 3, a lower positioning plate assembly 4 and an encapsulating box positioning assembly 5, wherein all the assemblies are connected by welding or fasteners to form a fixed connection relationship;
2) referring to fig. 2, the bottom plate 1 is a flat plate structure, the upper part of which is provided with bolt holes, and the bottom plate is mounted on the preparation space terrace through foundation bolts 11; the support frame 2 is of a truss structure, is welded on the bottom plate 1 and provides rigidity support in a preparation space for embedding a test piece, and the slide rail 21 is arranged on the support frame 2 and is connected with the first positioning plate assembly through the bolt 22;
3) referring to fig. 1 and 3, the first positioning plate assembly 3 and the second positioning plate assembly 4 are composed of an inner positioning plate 31, an outer positioning plate 32 and an adjusting block 33; the inner positioning plate is provided with a positioning groove 311 for limiting the lateral displacement of the test piece; the outer positioning plate 32 is of a groove-shaped machining structure and is used for clamping a test piece; the adjusting block 33 is of a flat plate block structure and is used for adjusting the height between the inner 31 and the outer positioning plate 32 so as to ensure the clamping effectiveness of the test piece; the inner positioning plate 31, the outer positioning plate 32 and the adjusting block 33 are mechanically connected through bolts so as to be convenient to disassemble;
4) referring to fig. 1 and 4, the potting box positioning assembly 5 includes a transverse positioning block 51, a lateral positioning block 52, and a holder positioning block 53; the transverse positioning blocks 51 are arranged on the main reference surface of the encapsulation box, the side positioning blocks 52 are arranged at two ends of the encapsulation box, and the auxiliary positioning blocks 43 are arranged on the outer side of the encapsulation box; the potting box positioning assembly 5 is mechanically connected with the bottom plate 1 through a bolt and is of a detachable structure.
Preferably, the method and the device for encapsulating the test piece comprise the following steps:
1) referring to fig. 1, firstly, the assembled encapsulation device is placed on an operation terrace, and a tool is locked through a foundation bolt 11;
2) according to the configuration and the size of a digital model of a test piece, the components of the first positioning plate 3 and the second positioning plate 4 are adjusted initially, and the components of the encapsulation box are positioned 5;
3) positioning through a potting box positioning component 5 according to the reference of the test piece potting box;
4) referring to fig. 1, a reinforced wall plate test piece 6 is placed in a positioned potting box, the main reference surface of the reinforced wall plate test piece is attached to the inner positioning plate, the side reference surface of the reinforced wall plate test piece is attached to the left adjusting block in the positioning plate assembly, the lower end surface of the test piece is in contact with the bottom plate 1, and the verticality of the test piece and the bottom plate 1 is ensured;
5) cleaning and checking the encapsulating box and the encapsulating end of the test piece, and keeping the encapsulating box and the encapsulating end of the test piece dry and clean;
6) weighing the components of the encapsulating resin, mixing the components in proportion, and fully and uniformly stirring the components;
7) after the pre-curing reaction of the encapsulating resin gel, performing secondary filling on the defects of surface shrinkage cavities, local depressions, air holes and the like, and curing;
8) after the solidification is finished, disassembling the test piece, and cleaning redundant resin and the surface protective layer of the test piece surface;
9) further, inverting the reinforced wall plate test piece, encapsulating the other end of the test piece, repeating the arrangements (1) to (8) to complete encapsulation of the whole test piece;
10) and (5) inspecting the test piece, and performing three-coordinate detection to verify whether the form and position tolerance of the test piece meets the design requirement.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (9)
1. The utility model provides an aircraft is with combined material reinforced wallboard test piece embedment device which characterized in that, the embedment device includes:
the fixed bottom plate is arranged on the preparation space terrace;
the support frame is arranged on the fixed base plate and used for providing rigidity support in a preparation space for filling and sealing the reinforced wall plate test piece;
the test piece positioning assembly is arranged on the support frame and is used for limiting the transverse/lateral displacement of the reinforced wall plate test piece;
and the potting box positioning assembly is detachably arranged on the fixed bottom plate and is used for limiting the transverse/lateral displacement of the potting box.
2. The composite material reinforced wall plate test piece embedding and sealing device for the airplane as claimed in claim 1, wherein the fixing bottom plate is of a flat plate type structure, the upper part of the fixing bottom plate is provided with bolt holes, and the fixing bottom plate is fixedly installed on the preparation space terrace through bolts.
3. The apparatus according to claim 1, wherein the holder comprises: the vertical plate is vertically and fixedly installed on the fixed base plate, one end of the inclined strut is fixedly connected to the vertical plate, and the other end of the inclined strut is fixedly connected to the fixed base plate to play a supporting role.
4. The aircraft composite stiffened wall panel test piece potting apparatus of claim 1, wherein the test piece positioning assembly comprises a first positioning plate assembly and a second positioning plate assembly mounted to a vertical face of a vertical riser of the cradle.
5. The aircraft composite stiffened panel test piece potting apparatus of claim 4, wherein the first locator plate assembly and the second locator plate assembly are both a double-layer composite structure comprising:
the outer positioning plate is provided with a positioning groove for clamping a reinforced wall plate test piece;
the inner positioning plate is of a groove-shaped machining structure and is used for limiting the lateral displacement of the reinforced wall plate test piece;
and the adjusting block is positioned between the inner positioning plate and the outer positioning plate and is used for adjusting the height between the inner positioning plate and the outer positioning plate.
6. The composite material reinforced wall plate test piece embedding and sealing device for the airplane as claimed in claim 5, wherein the inner positioning plate, the outer positioning plate and the adjusting block are mechanically connected through bolts;
the first positioning plate assembly is connected with a sliding rail bolt on the supporting frame through a sliding block and can slide in a longitudinal space; the second positioning plate component is fixedly connected with the support frame.
7. The composite stiffened panel test piece potting apparatus of claim 1, wherein the potting box positioning assembly comprises:
the transverse positioning block is arranged on the main reference surface of the potting box;
the lateral positioning blocks are arranged at two ends of the encapsulation box;
and the sliding auxiliary positioning block is arranged outside the encapsulation box.
8. The composite material stiffened wall panel test piece embedding and sealing device for the aircraft as claimed in claim 7, wherein the transverse positioning block, the lateral positioning block and the sliding auxiliary positioning block are mechanically connected with the fixed base plate through bolts and are detachable structures.
9. A method of potting a composite stiffened panel test piece for an aircraft using the composite stiffened panel test piece apparatus for an aircraft according to any one of claims 1 to 8, the method comprising the steps of:
1) fixedly installing the assembled encapsulating device on the preparation space terrace, and locking the encapsulating device through bolts;
2) according to the configuration and the size of a digital model of the reinforced wall plate test piece, a test piece positioning assembly and an encapsulation box positioning assembly are initially adjusted;
3) positioning through a positioning assembly of the potting box according to the datum of the potting box of the reinforced wall plate test piece;
4) placing the reinforced wallboard test piece into a positioned encapsulation box, attaching a main reference surface of the reinforced wallboard test piece to the inner positioning plate, attaching a side reference surface of the reinforced wallboard test piece to the left adjusting block in the first/second positioning plate assembly, and contacting the lower end surface of the test piece with the fixed bottom plate to ensure the verticality of the reinforced wallboard test piece and the fixed bottom plate;
5) cleaning and checking the encapsulating box and the encapsulating end of the test piece, and keeping the encapsulating box and the encapsulating end of the test piece dry and clean;
6) weighing the components of the encapsulating resin, mixing the components in proportion, and fully and uniformly stirring the components;
7) after the pre-curing reaction of the encapsulating resin gel, performing secondary filling on the defects of surface shrinkage cavities, local depressions, air holes and the like, and curing;
8) after the solidification is finished, disassembling the test piece, and cleaning redundant resin and the surface protective layer of the test piece surface;
9) inverting the reinforced wall plate test piece, encapsulating the other end of the test piece, and repeating the arrangement 1) -8) to complete encapsulation of the whole test piece;
10) and (4) inspecting the reinforced wall plate test piece, and performing three-coordinate detection to verify whether the form and position tolerance of the reinforced wall plate test piece meets the design requirement.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111563664.5A CN114441278A (en) | 2021-12-20 | 2021-12-20 | Encapsulating method and device for composite material reinforced wall plate test piece for airplane |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111563664.5A CN114441278A (en) | 2021-12-20 | 2021-12-20 | Encapsulating method and device for composite material reinforced wall plate test piece for airplane |
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