CN114232889A - Method for encapsulating mounting piece anywhere on sandwich board - Google Patents
Method for encapsulating mounting piece anywhere on sandwich board Download PDFInfo
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- CN114232889A CN114232889A CN202111001308.4A CN202111001308A CN114232889A CN 114232889 A CN114232889 A CN 114232889A CN 202111001308 A CN202111001308 A CN 202111001308A CN 114232889 A CN114232889 A CN 114232889A
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- 238000000034 method Methods 0.000 title claims abstract description 39
- 238000009434 installation Methods 0.000 claims abstract description 34
- 239000003292 glue Substances 0.000 claims abstract description 27
- 239000011162 core material Substances 0.000 claims abstract description 25
- 239000000565 sealant Substances 0.000 claims abstract description 25
- 238000009413 insulation Methods 0.000 claims abstract description 19
- 230000008569 process Effects 0.000 claims abstract description 12
- 239000000243 solution Substances 0.000 claims abstract description 12
- 238000002347 injection Methods 0.000 claims abstract description 7
- 239000007924 injection Substances 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims abstract description 3
- 238000005520 cutting process Methods 0.000 claims description 25
- 239000000853 adhesive Substances 0.000 claims description 7
- 230000001070 adhesive effect Effects 0.000 claims description 7
- 239000007769 metal material Substances 0.000 claims description 7
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims 1
- 239000002131 composite material Substances 0.000 abstract description 18
- 238000005538 encapsulation Methods 0.000 abstract description 8
- 238000007711 solidification Methods 0.000 abstract description 2
- 230000008023 solidification Effects 0.000 abstract description 2
- 238000004080 punching Methods 0.000 abstract 1
- 238000010008 shearing Methods 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 15
- 238000004519 manufacturing process Methods 0.000 description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 5
- 239000000446 fuel Substances 0.000 description 5
- 238000010998 test method Methods 0.000 description 5
- 238000012812 general test Methods 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052755 nonmetal Inorganic materials 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 238000009864 tensile test Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/26—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups
- E04C2/284—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating
- E04C2/292—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating composed of insulating material and sheet metal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/61—Connections for building structures in general of slab-shaped building elements with each other
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H1/00—Buildings or groups of buildings for dwelling or office purposes; General layout, e.g. modular co-ordination or staggered storeys
- E04H1/12—Small buildings or other erections for limited occupation, erected in the open air or arranged in buildings, e.g. kiosks, waiting shelters for bus stops or for filling stations, roofs for railway platforms, watchmen's huts or dressing cubicles
- E04H1/1205—Small buildings erected in the open air
- E04H1/1238—Shelters for engines, e.g. electrical meter housings
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Connection Of Plates (AREA)
Abstract
The invention provides a method for encapsulating a mounting piece anywhere on a sandwich board, which comprises the steps of punching a hole from one side of the sandwich board by using a hole puncher and removing an internal core material by using a core puncher; pouring part of pouring sealant into the open hole part, and then placing the base plate into the hole bottom; after part of pouring sealant is continuously injected, placing the heat insulation block into the hole; after part of pouring sealant is continuously injected, the insert is placed in the hole; injecting the rest pouring sealant from the glue injection hole on the surface of the insert; in the process, the glue solution is ensured not to flow into the mounting threaded hole of the insert; pressurizing the surface of the insert to ensure that the insert and the surface skin of the sandwich board are in the same plane; and after the pouring sealant is solidified, the mounting, filling and sealing operations are completed everywhere. The hole-opening mode and the coring process of the invention have little damage to the composite board of the shelter, the composite board is locally reinforced after encapsulation and solidification, the tensile strength and the shearing strength are higher, and the installation equipment is firm.
Description
Technical Field
The invention belongs to the technical field of shelter manufacturing, and relates to a sandwich panel processing method.
Background
The shelter is a carrier for various devices inside and outside the shelter, and is provided with various devices. The equipment is installed on the shelter, namely an installation seat of the equipment is arranged at the designated position of a shelter wallboard (composite sandwich board), and then the equipment is connected to the installation seat. In the manufacture of the shelter, the composite sandwich board is of a sandwich structure, the skin is very thin, and when equipment is installed on the surface of the skin, the inner core material cannot provide support. Therefore, the traditional method for installing equipment on the composite sandwich board is an embedding method, namely, an installation position is designed on the composite board, a steel plate is embedded under a skin at the corresponding position of the composite board during manufacturing, and after the composite board is molded, a hole is drilled at the installation position to process a thread, so that the equipment can be installed. The method has simple design and reliable installation, but has higher requirement on the accuracy of the embedded position, can not be displaced/supplemented, is not easy to repair after being damaged, and can not realize the installation everywhere.
In recent research on manufacturing technology of the shelter, the technology of everywhere installation and encapsulation is developed. The 'everywhere installation' of the shelter equipment means that in the process of designing and producing the shelter, installation base plates are not pre-buried in the installation positions of the shelter composite plates, fixed installation seats are not arranged, the equipment is installed at optional positions after the manufacturing of the shelter body, and the positions can be changed on site. Therefore, the design of the square cabin can be simplified, the design and production period can be shortened, the production efficiency can be improved, the universality and the maintainability of the square cabin can be greatly improved, and the pressure of logistics supply can be relieved.
At present, a manufacturing method of 'liquid structural adhesive encapsulation fixation' is generally adopted, and comprises the following steps: 1) opening a hole on one side panel of the composite board; 2) coring; 3) pouring glue solution; 4) placing an insert; 5) and (5) curing. The method can be used for mounting anywhere and also can achieve certain fixing strength, but has some problems: 1) when coring, the core material is cut by using a trimming and notching machine, the radius and the shape of the hole are not easy to control, so that the core material hole and the panel hole are not concentric, and the insert cannot be centered in the hole, thereby causing eccentric and verticality deviation; 2) the bottom of the panel at the side without the hole is not provided with a base plate, and the panel is easy to be sunken due to overlarge stress of the insert; 3) when the core materials in the holes are hollowed, the radius is too large and not fixed, so that the amount of injected glue is not fixed, local hollowing is easy to form, the mechanical property is unstable, and the core materials are easy to pull off and damage; 4) the glue solution has too high fluidity and is difficult to encapsulate on the side wall and the top.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the encapsulating method of the everywhere installation part of the sandwich panel, which can process specific blind holes at any position of the composite sandwich panel, install parts and encapsulate the parts in the holes, and is firm and reliable after curing, thereby really realizing the everywhere installation of shelter equipment. The everywhere mounting seat of the composite sandwich board manufactured by encapsulation according to the method can be used for mounting general equipment, can realize the displacement/supplement of the equipment, and has the advantages of simple and easy operation, firm and reliable mounting, displacement and easy repair.
The technical scheme adopted by the invention for solving the technical problem comprises the following steps:
1) using a hole opener to open a hole from the surface of the panel on one side of the sandwich plate, and removing the skin on the surface of the panel; the core material in the core remover is removed by using the core remover, so that the other side panel is not damaged;
2) pouring part of pouring sealant into the open hole part, and then placing the base plate into the hole bottom; after part of pouring sealant is continuously injected, placing the heat insulation block into the hole; after part of pouring sealant is continuously injected, the insert is placed in the hole;
3) injecting the residual pouring sealant from the glue injection hole on the surface of the insert until the glue solution flows out from the exhaust hole of the insert; in the process, the glue solution is ensured not to flow into the mounting threaded hole of the insert;
4) removing redundant glue solution on the surfaces of the sandwich board and the insert;
5) pressurizing the surface of the insert to ensure that the insert and the surface skin of the sandwich board are in the same plane;
6) and after the pouring sealant is solidified, the mounting, filling and sealing operations are completed everywhere.
The hole digger grinds the alloy steel hole digger to phi d on a cylindrical grinding machine-0.1 0And d is the aperture of the panel of the sandwich panel to be processed.
The coring device comprises a cutter bar, a pressure plate, a centering disc and a cutting head, wherein the cutter bar and the centering disc are coaxially arranged on two axial sides of the pressure plate, the cutting head is of an L-shaped structure, one end of the cutting head is coaxially fixedly connected to the axis of the centering disc, and the other end of the cutting head is a cutting edge parallel to the axis of the centering disc.
The backing plate is made of metal materials, the diameter of the backing plate is the same as the inner diameter of the hole bottom of the sandwich plate, and the thickness of the backing plate is 3-5 mm.
The heat insulation blocks are made of non-metal materials, the diameter of each heat insulation block is the same as the aperture of the panel of the sandwich panel, and the thickness of each heat insulation block is 1/3 of the thickness of the sandwich panel.
The pouring sealant adopts X4113 room temperature fast curing high-strength structural adhesive.
The opening of the sandwich plate is a step hole, and the inner diameter of the hole bottom is larger than the aperture of the panel. In order to process a major diameter step hole in the bottom of straight hole, the coring device change the cutting tool bit that the radius gradually increased in proper order, divide a plurality of times cutting to get the core, change the cutting tool bit when cutting at every turn, the tool bit radius increases 5mm at every turn, the tool bit slope gets into the little diameter section of trompil.
The invention has the beneficial effects that:
according to the everywhere installation device for encapsulation, the damage to the composite board of the shelter caused by the hole opening mode and the coring process is small, the composite board is locally reinforced after encapsulation and solidification, the tensile strength and the shear strength are high, and the installation equipment is firm.
According to the specification of a screw hole load test (test method 507) of GJB2093A-2012 'military shelter general test method' 9.7 (an M8 screw hole without a reinforcing beam, the tensile load should not be less than 4.5KN, and the torque should not be less than 11Nm), through more than one-year-round tests, the measurement result fluctuation is small, and the measurement result is very stable and superior to the standard specification. Tables 1 and 2 show the results of one measurement.
TABLE 1 everywhere installation tensile test sample measurement results
| Serial number | 1 | 2 | 3 | 4 | 5 |
| Pulling force (KN) | 10.5 | 10.775 | 10.192 | 10.086 | 10.134 |
TABLE 2 everywhere installation Torque test sample measurement results
| Serial number | 1 | 2 | 3 | 4 | 5 |
| Torque (Nm) | 54 | 53.5 | 54 | 53 | 52 |
Drawings
FIG. 1 is a cross-sectional view of a composite sandwich panel after coring of the open hole;
FIG. 2 is a cross-sectional view of the installed components all potted within the composite sandwich panel;
FIG. 3 is a cross-sectional view of a reinforced everywhere mounting structure;
fig. 4 is a schematic structural diagram of a special coring device.
Detailed Description
The present invention will be further described with reference to the following drawings and examples, which include, but are not limited to, the following examples.
The method is to open a specific blind hole on one side of the composite sandwich plate, and to package each part in the hole at one time.
The process flow of the invention comprises: preparing, positioning, perforating and cleaning, glue injection mounting of a base plate and a heat insulation block, glue injection mounting of an insert, glue supplement, glue removal, pressurization and pressure relief.
The method comprises the following specific steps:
1) and (4) preparing.
Preparing required tools and materials (an electric hand drill, a special hole digger, a special coring device, a glue injection gun, a mixing roll, a hand hammer, a marking pen, a pressing block, a base plate, an insert, a heat insulation block, pouring sealant, industrial ethanol and cotton yarn), and cleaning oil stains on the surface of the base plate, the insert and the heat insulation block by using the industrial ethanol for later use.
2) And (6) positioning.
Marking the central position of the insert on the surface of one side panel of the composite sandwich panel by using a marking pen according to the position shown by the installation requirement.
3) And (6) opening holes and cleaning.
Mounting the special hole digger and the electric hand drill in a combined mode, forming a blind hole in the surface of one side panel according to the center position, and removing the skin on the surface of one side panel; the special core extractor and the electric hand drill are assembled to remove the core material inside, so that the other side panel is not damaged, and the excess is cleaned.
4) And (5) injecting glue to install the base plate and the heat insulation block.
Installing a mixing roll in the pouring sealant, placing the mixing roll into a glue groove of a glue injection gun, injecting 1/4 volume pouring sealant into the open hole part, placing the backing plate at the bottom of the blind hole, and compacting by a hand hammer; the 1/4 volume of potting adhesive was continued to be poured and the insulation blocks placed in the blind holes and compacted with a hand hammer.
5) And (5) injecting glue to install the insert.
And (4) continuously injecting 1/4 volume pouring sealant, outwards arranging the insert installation threaded hole in the blind hole, and compacting.
6) And (5) glue supplementing.
Pouring 1/4 volume of pouring sealant slowly from the hole of the sealant on the surface of the insert until the sealant flows out from the vent hole.
In the process, the glue solution is ensured not to flow into the mounting threaded hole.
7) And (6) cleaning the glue.
Wiping redundant glue solution on the surface by using cotton yarn dipped with industrial ethanol, and cleaning;
8) and (4) pressurizing.
And placing the pressing block on the surface of the insert for pressurization, ensuring that the insert and the skin are in the same plane, and keeping the pressure for 24-48 hours at normal temperature.
9) And (5) releasing the pressure.
And after 24-48 h, removing the pressing block after the pouring sealant is solidified, and completing the installation and filling operation everywhere.
The special hole digger for the method is to grind the alloy steel hole digger to phi d in a cylindrical grinder-0.1 0(d: the aperture of the panel), make the panel open pore keep the minus tolerance, will cause the panel hole to abrade and expand while coring the core, make the panel hole reach Phid after coring, can control the size of the open pore accurately like this, facilitate centering while installing the mosaic, improve the position accuracy of installation and verticality of mosaic to the panel; the special core extractor is a special cutter with the functions of centering and cutting the core material, the upper half part of the special core extractor is provided with a disk for centering, the lower half part of the special core extractor is provided with a blade (shown in figure 4) for cutting the core material, and the cut core material scraps can be sucked by a dust collector; the centering disc can accurately determine the circle center on the panel hole, so that the cutting edge is concentric with the panel hole when cutting the core material, and the concentricity of the backing plate, the heat insulation block and the insert is ensured.
The backing plate and the heat insulating block installed in the blind hole play an important role in the device. The backing plate is bonded at the bottom to strengthen the strength and rigidity of the panel without holes, the panel is not easy to dent and tear when the insert is stressed too much, the backing plate is generally made of metal materials, the diameter of the backing plate is the same as the aperture of the panel, and the thickness of the backing plate is generally 3-5 mm; the heat insulation blocks are arranged between the metal materials to play a role in blocking a heat bridge, so that the heat insulation performance of the sandwich panel is not damaged, the overall heat insulation performance of the shelter is not affected, the heat insulation blocks are generally made of non-metal materials, the diameter of the heat insulation blocks is the same as the aperture of the panel, and the thickness of the heat insulation blocks is generally 1/3 of the thickness of the sandwich panel.
The pouring sealant selects a structural adhesive (X4113 high-strength structural adhesive) capable of being rapidly cured at room temperature, and has high viscosity (more than 7000mPa & s) and shear strength (more than 20 MPa). The glue solution can be poured into the side wall and the top of the container body with high viscosity, the structural firmness is guaranteed through high shear strength, and high tension and torque are borne.
In order to increase the bearing capacity, a reinforced type everywhere installation is developed, the structure is shown in figure 3, and a step is added at the bottom of the basic structure, so that the contact area of the bottom is increased, and the structural strength is improved. In order to process a large-diameter step hole at the bottom of the straight hole, the coring device is sequentially replaced with cutting tool bits with gradually increased radiuses, and the coring is carried out by three times of cutting. In order to prevent the damage to the core step of the small-diameter section after the large-radius cutter head is replaced, the radius of the cutting cutter head is gradually increased by 5mm, the cutter head needs to be inclined when entering the small-diameter section, and the cutter head also needs to be inclined along the original direction when being taken out. The diameter of the bottom backing plate is larger than that of the small-diameter section, the backing plate can be split along the diameter, and the two halves are sequentially placed at the bottom of the large-diameter section and then spliced into a circle. The actual measurement shows that the bearing capacity of the enhanced type everywhere installation can be improved by 20-30% compared with the basic type.
In the project bid of centralized purchase of a certain shelter, a fuel heater (26.5Kg, installed on the outer side wall of the shelter), an integrated air conditioner (92Kg, installed on the outer side wall of the shelter) and a cabinet (116Kg, installed on the inner bottom plate of the shelter) are installed in the installation of equipment of the shelter by using the everywhere installation encapsulation method. The fuel heater is arranged outside the square cabin, and 6 everywhere mounting seats are constructed and encapsulated on the side wall of the fuel heater; the integrated air conditioner is arranged outside the shelter, and 12 everywhere mounting seats are constructed and encapsulated on the side wall of the integrated air conditioner; the cabinet is arranged in the shelter, 16 everywhere installation seats are encapsulated in the forward construction of the bottom plate, and 8 everywhere installation seats are encapsulated in the construction of the back side wall. The 42 installation bases are encapsulated and molded by the standard steps of the method, the temperature in a factory is 17 ℃, the pressure of a pressing block is 0.1MPa, and the curing time is 24 hours. The following tests were performed in the later stage.
1. The "off-road vehicle load test" test was simulated as specified by the 8.1 off-road vehicle load test (test method 401) of GJB2093A-2012 "military Shelter general test methods". The cabin is loaded with 3.5t load on a 40t electric vibration test bed according to GJB150.16A-2009 military equipment laboratory environmental test method part 16: vibration test the test quantity specified in vibration test "was vibrated for 40 min. The cabin body is intact, and the installation bolts and the installation seats of the equipment (fuel heater, air conditioner and cabinet) inside and outside the cabin body are not loosened or displaced.
2. According to the specification of a transport drop test (test method 404) of 8.4 of GJB2093A-2012 general test method for military shelter, 3.5t of load is loaded in the shelter, the flat drop and the edge drop are respectively carried out once, and the mounting bolts and the mounting seats of equipment (a fuel heater, an air conditioner and a cabinet) inside and outside the shelter are not loosened or displaced.
3. According to the specification of a 9.7 installation screw hole load test (test method 507) of GJB2093A-2012 'military shelter general test method', an anchor rod drawing instrument is used for carrying out a tensile test on a drawing sample piece installed anywhere on the inner side of a right side plate of a cabin body, and the measured value is greater than 8 KN; the torque sample was subjected to a torque test with a torque wrench, and the measured value was greater than 20N · m.
The examples prove that the everywhere mounting seat encapsulated by the everywhere mounting encapsulation method is firm and durable, and the mechanical property is superior to the specification of a GJB 2093A-20129.7 mounting screw hole load test.
Claims (8)
1. The method for encapsulating the everywhere installation part of the sandwich board is characterized by comprising the following steps of:
1) using a hole opener to open a hole from the surface of the panel on one side of the sandwich plate, and removing the skin on the surface of the panel; the core material in the core remover is removed by using the core remover, so that the other side panel is not damaged;
2) pouring part of pouring sealant into the open hole part, and then placing the base plate into the hole bottom; after part of pouring sealant is continuously injected, placing the heat insulation block into the hole; after part of pouring sealant is continuously injected, the insert is placed in the hole;
3) injecting the residual pouring sealant from the glue injection hole on the surface of the insert until the glue solution flows out from the exhaust hole of the insert; in the process, the glue solution is ensured not to flow into the mounting threaded hole of the insert;
4) removing redundant glue solution on the surfaces of the sandwich board and the insert;
5) pressurizing the surface of the insert to ensure that the insert and the surface skin of the sandwich board are in the same plane;
6) and after the pouring sealant is solidified, the mounting, filling and sealing operations are completed everywhere.
2. The method of claim 1, wherein the tap is an alloy steel tap ground to Φ d in a cylindrical grinder-0.1 0And d is the aperture of the panel of the sandwich panel to be processed.
3. The method of claim 1, wherein the coring apparatus comprises a tool holder, a platen, a centering plate, and a cutting head, the tool holder and the centering plate are coaxially mounted on two axial sides of the platen, the cutting head is of an L-shaped configuration, one end of the cutting head is coaxially attached to the axis of the centering plate, and the other end of the cutting head is a blade parallel to the axis of the centering plate.
4. The method for encapsulating the everywhere installation part of the sandwich panel according to claim 1, wherein the base plate is made of a metal material, the diameter of the base plate is the same as the inner diameter of the hole bottom of the sandwich panel, and the thickness of the base plate is 3-5 mm.
5. The method of claim 1, wherein the thermal insulation blocks are made of non-metallic materials, have a diameter equal to the diameter of the panel of the sandwich panel, and have a thickness of 1/3 mm of the thickness of the sandwich panel.
6. The method for encapsulating the sandwich panel everywhere mounting part according to claim 1, wherein the encapsulating adhesive adopts X4113 high-strength structural adhesive capable of being rapidly cured at room temperature.
7. The method of claim 1, wherein the opening of the sandwich panel is a stepped hole, and the inner diameter of the bottom of the hole is larger than the diameter of the panel.
8. A method as claimed in claim 7, wherein the coring apparatus is sequentially changed with cutting heads of progressively increasing radius for machining a large diameter stepped bore in the bottom of the straight bore, the coring apparatus is changed with the cutting heads for each cutting, the radius of the cutting heads is increased by 5mm each time, and the cutting heads are tilted into the small diameter portion of the bore.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111001308.4A CN114232889A (en) | 2021-08-30 | 2021-08-30 | Method for encapsulating mounting piece anywhere on sandwich board |
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| CN202111001308.4A CN114232889A (en) | 2021-08-30 | 2021-08-30 | Method for encapsulating mounting piece anywhere on sandwich board |
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2021
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| US20190232602A1 (en) * | 2016-07-25 | 2019-08-01 | Nolax Ag | Sandwich component, method for producing a sandwich component, and use of a sandwich component |
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| CN112060602A (en) * | 2020-08-29 | 2020-12-11 | 衡阳泰豪通信车辆有限公司 | Method for improving pulling resistance of insert of sandwich board |
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Application publication date: 20220325 |