CN114986996A - Bionic drag reduction fish skin and manufacturing method thereof - Google Patents
Bionic drag reduction fish skin and manufacturing method thereof Download PDFInfo
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- CN114986996A CN114986996A CN202210480012.3A CN202210480012A CN114986996A CN 114986996 A CN114986996 A CN 114986996A CN 202210480012 A CN202210480012 A CN 202210480012A CN 114986996 A CN114986996 A CN 114986996A
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- 239000011664 nicotinic acid Substances 0.000 title claims abstract description 42
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 claims abstract description 12
- 239000003292 glue Substances 0.000 claims description 20
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 12
- 239000000741 silica gel Substances 0.000 claims description 12
- 229910002027 silica gel Inorganic materials 0.000 claims description 12
- 238000010146 3D printing Methods 0.000 claims description 7
- 238000005516 engineering process Methods 0.000 claims description 5
- 230000003592 biomimetic effect Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 16
- 238000004026 adhesive bonding Methods 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 241000251730 Chondrichthyes Species 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000003811 curling process Effects 0.000 description 1
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- 239000013013 elastic material Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
- B29D7/01—Films or sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B1/00—Layered products having a non-planar shape
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
- B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
- B32B37/1284—Application of adhesive
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
- B63C11/00—Equipment for dwelling or working underwater; Means for searching for underwater objects
- B63C11/52—Tools specially adapted for working underwater, not otherwise provided for
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T70/00—Maritime or waterways transport
- Y02T70/10—Measures concerning design or construction of watercraft hulls
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ceramic Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Farming Of Fish And Shellfish (AREA)
- Meat, Egg Or Seafood Products (AREA)
Abstract
The invention discloses a bionic drag reduction fish skin and a manufacturing method thereof, wherein the bionic drag reduction fish skin comprises an inner layer fish skin and an outer layer fish skin, a first through hole is formed in the inner layer fish skin, a second through hole and a valve are formed in the outer layer fish skin, the outer layer fish skin is connected end to end, the inner layer fish skin is connected end to form a containing cavity, the outer layer fish skin is covered outside the inner layer fish skin, the inner layer fish skin is covered on an underwater robot, when the underwater robot swings, the valve on one side of the outer layer fish skin is closed and kept sealed, so that the surface of the outer layer fish skin presents a streamline to reduce the surface resistance, meanwhile, the water hitting area is increased, and a larger thrust is provided; meanwhile, water in the bionic drag reduction fish skin flows out from the valve on the other side in the swinging process to form jet flow, so that the reduction of surface resistance is facilitated, the cruising speed is improved, and the voyage can be increased.
Description
Technical Field
The invention relates to the field of underwater robots, in particular to a bionic drag reduction fish skin and a manufacturing method thereof.
Background
The underwater robot is a type of robot, can operate in a depth and a width which are difficult to reach by human beings, and can easily realize underwater work such as water quality detection, environmental exploration and the like by utilizing the underwater robot. The bionic robot fish is designed according to the biological structure and the dynamics principle of real fish, so the swimming in water can be more natural, and the control is carried out by utilizing the hydromechanics principle, and the superior maneuverability and the stability are incomparable to those of the traditional underwater robot based on propeller propulsion. Therefore, the bionic robot fish has important research value and wide application prospect in underwater exploration and development in the economic field and the military field. For articulated robotic fish, the size and carrying capacity are limited, and large-capacity batteries cannot be carried, so how to realize faster sailing speed and longer sailing distance by using limited energy is an important research subject. The bionic drag reduction fish skin is added to the multi-joint robot fish, so that the fluid resistance of the multi-joint robot fish can be effectively reduced, the cruising speed is improved, and the voyage can be increased. The existing drag reduction method is realized by mainly simulating and manufacturing a specific drag reduction structure on the surface of an aquatic organism, for example, manufacturing a circular groove surface similar to a shark skin surface by manufacturing a shield scale, but the existing circular grooves distributed in parallel along the long axis direction of the fish skin can damage the overall streamline, so that the resistance of the surface under water is increased, and the manufacturing is relatively complex.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides the bionic drag reduction fish skin capable of effectively reducing the fluid resistance borne by the fish skin.
The invention also provides a manufacturing method for manufacturing the bionic drag reduction fish skin.
According to the embodiment of the first aspect of the invention, the bionic drag reduction fish skin comprises
The inner layer fish skin is provided with a first through hole;
the outer-layer fish skin is provided with a second through hole and a valve arranged in the second through hole, and the valve can move relative to the second through hole;
wherein, outer skin end to end, inlayer skin end to end forms and holds the chamber, outer skin cover is established outside the inlayer skin, the position of first through-hole with the position of second through-hole is corresponding.
The bionic drag reduction fish skin according to the embodiment of the first aspect of the invention has at least the following beneficial effects: the bionic drag reduction fish skin comprises an inner layer fish skin and an outer layer fish skin, wherein a first through hole is formed in the inner layer fish skin, a second through hole and a valve are formed in the outer layer fish skin, the outer layer fish skin is connected end to end, the inner layer fish skin is connected end to form a containing cavity, the outer layer fish skin covers the inner layer fish skin, the inner layer fish skin covers the underwater robot, when the underwater robot swings, the valve on one side of the outer layer fish skin is closed and kept sealed, the surface of the outer layer fish skin is streamlined, the surface resistance is reduced, the water hitting area is increased, and larger thrust is provided; meanwhile, water in the bionic drag reduction fish skin flows out from the valve on the other side in the swinging process to form jet flow, so that the reduction of surface resistance is facilitated, the cruising speed is improved, and the voyage can be increased.
According to some embodiments of the invention, the first through hole is provided in a semicircular shape.
According to some embodiments of the invention, the second through hole is provided in a semi-circle shape.
According to some embodiments of the invention, the shape of the valve is adapted to the shape of the second through hole.
According to some embodiments of the invention, the valve has a diameter larger than a diameter of the first through hole, such that the valve cannot pass through the first through hole.
According to some embodiments of the invention, the head end and the tail end of the inner layer fish skin are fixed by glue.
According to some embodiments of the invention, the head end and the tail end of the outer fish skin are fixed by gluing.
According to some embodiments of the invention, the outer skin and the inner skin are fixed by gluing.
According to some embodiments of the invention, the inner layer fish skin and the outer layer fish skin are made of silica gel.
The invention also provides a manufacturing method for manufacturing the bionic drag reduction fish skin.
According to the second aspect of the invention, the preparation method of the bionic drag reduction fish skin comprises the following steps:
designing a production mold of the bionic drag reduction fish skin;
manufacturing the production mold by using a 3D printing technology;
pouring the mold by using silica gel to obtain an inner layer fish skin and an outer layer fish skin of the bionic drag reduction fish skin;
flattening and aligning the inner layer fish skin and the outer layer fish skin and then tightly adhering the inner layer fish skin and the outer layer fish skin;
curling the inner layer fish skin into a round shape, and using glue to stick the head end and the tail end of the inner layer fish skin tightly;
curling the outer-layer fish skin into a round shape, and using glue to stick the head end and the tail end of the outer-layer fish skin tightly.
The method for manufacturing the bionic drag reduction fish skin according to the embodiment of the first aspect of the invention at least has the following beneficial effects: according to the invention, the production mold is manufactured by adopting a 3D printing technology, the inner layer fish skin and the outer layer fish skin are obtained by pouring silica gel, and the inner layer fish skin and the outer layer fish skin are tightly adhered by using glue, so that the method is simple to manufacture, low in cost and capable of being used for manufacturing in small batches at low cost.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of an underwater robot according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of the biomimetic drag reducing fish skin shown in FIG. 1;
FIG. 3 is a schematic view of the outer layer shown in FIG. 2 with the skin flattened;
FIG. 4 is a schematic view of the inner fish skin shown in FIG. 2;
FIG. 5 is a schematic view of the inner fish skin shown in FIG. 4 laid flat;
FIG. 6 is a schematic structural view of the valve shown in FIG. 1 in an open state;
fig. 7 is a schematic view of the valve shown in fig. 1 in a closed state.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to the orientation description, such as the upper, lower, front, rear, left, right, inner, outer, etc., is the orientation or positional relationship shown on the drawings, only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise specifically limited, terms such as set, mounted, connected, assembled, matched, etc. should be understood broadly, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention by combining the detailed contents of the technical solutions.
A biomimetic drag reducing fish skin according to an embodiment of the present invention is described below with reference to fig. 1 to 7.
The bionic drag reduction fish skin provided by the embodiment of the invention comprises an inner layer fish skin 100 and an outer layer fish skin 200, wherein the inner layer fish skin 100 is provided with a first through hole 110, the outer layer fish skin 200 is provided with a second through hole 210 and a valve 220 arranged in the second through hole 210, the valve 220 can move relative to the second through hole 210, the outer layer fish skin 200 is connected end to end, the inner layer fish skin 100 is connected end to form a containing cavity, the outer layer fish skin 200 covers the inner layer fish skin 100, and the position of the first through hole 110 corresponds to the position of the second through hole 210.
It should be noted that the jet flow generated by the gill part in the shark breathing process can change the flow field distribution at the downstream, and effectively reduce the surface resistance. The utility model provides a bionical drag reduction fish skin, including inlayer fish skin 100 and outer fish skin 200, be provided with first through-hole 110 on the inlayer fish skin 100, be provided with second through-hole 210 and valve 220 on the outer fish skin 200, valve 220 can move relative second through-hole 210, valve 220 and first through-hole 110, the cooperation of second through-hole 210, can produce the efflux at underwater robot swing in-process, change the flow field distribution of low reaches department, effectively reduce surface resistance. The inner layer fish skin 100 is connected end to form a containing cavity, the inner layer fish skin 100 is arranged outside the underwater robot through the containing cavity cover, the outer layer fish skin 200 cover is arranged outside the inner layer fish skin 100, the position of the first through hole 110 is corresponding to the position of the second through hole 210, a valve 220 is arranged in the second through hole 210, the valve 220 can move relative to the second through hole 210, when the underwater robot swings to advance, the valve 220 moves relative to the second through hole 210, and the valves 220 on the two sides of the outer layer fish skin 200 are closed, so that the water hitting area can be increased, larger thrust is provided, and the surface resistance is reduced. Specifically, when the underwater robot swings to the right, the valve 220 on the right side of the bionic drag reduction fish skin is in a closed state, which is beneficial to increasing the water hitting area of the underwater robot and providing forward thrust; meanwhile, the space on the right side of the underwater robot is extruded in the swinging process, the valve 220 on the left side of the bionic drag reduction fish skin is in an open state, water flows out from the second through hole 210 on the left side, and jet flow is formed on the left side, so that the reduction of surface resistance is facilitated, the cruising speed is improved, and the voyage can be increased.
It can be understood that the inner layer fish skin 100 is connected end to form the accommodating cavity, the shape of the accommodating cavity can be changed based on the shape of the under-tree robot, and the accommodating cavity shown in fig. 2 is oval, so that the accommodating cavity is suitable for wrapping an underwater robot with oval tail joints and gradually changed joint sizes.
According to some embodiments of the present invention, the first through-hole 110 is provided in a semicircular shape. The inner layer fish skin 100 array of the bionic drag reduction fish skin is distributed with semicircular first through holes 110, the first through holes 110 are arranged in a staggered mode in multiple rows, the circle center of each first through hole 110 in each row is equidistant to the bottom edge expansion line, and the circle center distances of two adjacent semicircular through holes in the same row are equal. It is understood that in some other embodiments, the first through hole 110 may also be configured as a trapezoid, a gate, or another shape, the shape of the first through hole 110 does not affect the generation of the jet, and the flowing water flowing out of the trapezoid, the gate, or another shape of the first through hole 110 can also form the jet, which is beneficial to reducing the surface resistance, increasing the cruising speed, and increasing the range.
According to some embodiments of the present invention, the second through-hole 210 is provided in a semicircular shape. The second through hole 210 is provided with a valve 220, and the valve 220 can rotate relative to the second through hole 210 and can be in a closed state and an open state. Specifically, in some embodiments, the shape of the valve 220 is matched with the shape of the second through hole 210, the valve 220 can control the opening and closing of the second through hole 210, when the underwater robot swings and advances, the valve 220 moves relative to the second through hole 210, and the valves 220 on two sides of the outer fish skin 200 close together, so that the water hitting area can be increased, a larger pushing force can be provided, and the surface resistance can be reduced. Specifically, when the underwater robot swings to the right, the valve 220 on the right side of the bionic drag reduction fish skin is in a closed state, which is beneficial to increasing the water hitting area of the underwater robot and providing forward thrust; meanwhile, the space on the right side of the underwater robot is extruded in the swinging process, the valve 220 on the left side of the bionic drag reduction fish skin is in an open state, water flows out from the second through hole 210 on the left side, and jet flow is formed on the left side, so that the reduction of surface resistance is facilitated, the cruising speed is improved, and the voyage can be increased. It is understood that in some other embodiments, the second through holes 210 may also be configured as a trapezoid, a door, or another shape, the shape of the second through holes 210 does not affect the generation of the jet flow and the opening or closing of the valve, and the water flowing out of the second through holes 210 having the trapezoid, the door, or another shape can also form the jet flow, which is beneficial to reducing the surface resistance, improving the cruising speed, and increasing the range.
According to some embodiments of the present invention, the diameter of the valve 220 is larger than the diameter of the first through hole 110, such that the valve 220 cannot pass through the first through hole 110. First through-hole 110 sets up the inboard at second through-hole 210, and valve 220 can't pass first through-hole 110, and when valve 220 moved relative second through-hole 210, first through-hole 110 can carry on spacingly to valve 220, makes valve 220 hug closely inlayer fish skin 100, accomplishes the closure to second through-hole 210, helps increasing underwater robot's the area of beating water, provides the thrust that advances. In some embodiments, the first through hole 110 and the second through hole 210 may be different shapes, as long as it is ensured that the diameter of the valve 220 is larger than the diameter of the first through hole 110, so that the valve 220 cannot pass through the first through hole 110.
According to some embodiments of the present invention, the outer skin 200 is fixed to the inner skin 100 by gluing. Inlayer fish skin 100 is provided with first through-hole 110, outer fish skin 200 is provided with second through-hole 210, outer fish skin 200 tiles on inlayer fish skin 100, the position of the first through-hole 110 of inlayer fish skin 100 is corresponding with the position of the second through-hole 210 of outer fish skin 200, use glue to bond outer fish skin 200 on inlayer fish skin 100, it is fixed to realize the bonding between outer fish skin 200 and the inlayer fish skin 100, establish outer fish skin 200 and inlayer fish skin 100 together and establish outside the underwater robot.
According to some embodiments of the present invention, the head and tail ends of the inner fish skin 100 are fixed by glue. The head and the tail of the inner layer fish skin 100 are connected and curled to form an oval shape with a containing cavity, the underwater robot is placed in the containing cavity, and the inner layer fish skin 100 is covered on the underwater robot. The head end and the tail end of the inner layer fish skin 100 are fixedly bonded through glue, so that the head end and the tail end of the inner layer fish skin 100 are connected. The glue bonding mode is simple to operate and low in cost.
According to some embodiments of the present invention, the head and tail ends of the outer fish skin 200 are fixed by glue. The end-to-end ends of the outer layer fish skin 200 are connected and curled to form an oval shape, the outer layer fish skin 200 covers the inner layer fish skin 100, and the end-to-end ends of the outer layer fish skin 200 are bonded and fixed through glue to realize the end-to-end connection of the outer layer fish skin 200. The glue bonding mode is simple to operate and low in cost.
According to some embodiments of the present invention, the inner skin 100 and the outer skin 200 are made of silica gel. The silica gel material has good ductility, and is convenient for the pouring and the curling forming of the inner layer fish skin 100 and the outer layer fish skin 200. The production of the inner layer fish skin 100 and the outer layer fish skin 200 can be realized by pouring the silica gel material in the mould, and the production is simple and the cost is low. It is understood that the inner layer fish skin 100 and the outer layer fish skin 200 may be made of other elastic materials or flexible materials with good ductility, and the curling process can be performed.
The invention also provides a preparation method of the bionic drag reduction fish skin, which comprises the following steps:
s1: designing a production mold of the bionic drag reduction fish skin. Specifically, an expansion diagram of the bionic drag reduction fish skin is designed according to the shape to be coated of the underwater robot, the arrangement of the first through holes 110 and the second through holes 210 is arranged on the expansion diagram, and then corresponding dies are designed, so that the outer layer fish skin 200 and the inner layer fish skin 100 are produced.
S2: the production mold is fabricated using 3D printing techniques. And 3D printing is carried out according to the three-dimensional model of the production mold, and the production of the production mold is completed. The 3D printing technology has the advantages of higher production speed and higher production flexibility.
S3: and (3) pouring the mould by using silica gel to obtain the inner layer fish skin 100 and the outer layer fish skin 200 of the bionic drag reduction fish skin. And pouring the silica gel into the mold, and curing the silica gel to obtain the inner fish skin 100 and the outer fish skin 200 of the bionic drag reduction fish skin.
S4: the inner layer fish skin 100 and the outer layer fish skin 200 are flatly laid and aligned and then are tightly adhered. Inlayer fish skin 100 is provided with first through-hole 110, and outer fish skin 200 is provided with second through-hole 210, and outer fish skin 200 tiles on inlayer fish skin 100, and the position of the first through-hole 110 of inlayer fish skin 100 is corresponding with the position of the second through-hole 210 of outer fish skin 200, uses glue to bond outer fish skin 200 on inlayer fish skin 100, realizes the bonding between outer fish skin 200 and the inlayer fish skin 100 fixed.
S5: curling the inner layer fish skin 100 into a round shape, and using glue to stick the head and tail ends of the inner layer fish skin 100 tightly. The head end and the tail end of the inner layer fish skin 100 are fixedly bonded through glue, so that the head end and the tail end of the inner layer fish skin 100 are connected. The glue bonding mode is simple to operate and low in cost.
S6: and curling the outer-layer fish skin 200 into a round shape, and adhering the head end and the tail end of the outer-layer fish skin 200 by using glue. The head end and the tail end of the outer layer fish skin 200 are fixedly bonded through glue, so that the head end and the tail end of the outer layer fish skin 200 are connected. The glue bonding mode is simple to operate and low in cost.
According to the invention, the production mold is manufactured by adopting a 3D printing technology, the inner layer fish skin 100 and the outer layer fish skin 200 are obtained by pouring silica gel, the inner layer fish skin 100 and the outer layer fish skin 200 are tightly adhered by using glue, the manufacturing is simple, the cost is low, and the method can be used for manufacturing in small batches at low cost.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (10)
1. A bionic drag reduction fish skin is characterized by comprising:
the fish skin comprises an inner layer fish skin, wherein a first through hole is formed in the inner layer fish skin;
the fish skin comprises an outer layer fish skin, wherein a second through hole and a valve arranged in the second through hole are formed in the outer layer fish skin, and the valve can move relative to the second through hole;
wherein, outer skin end to end, inlayer skin end to end forms and holds the chamber, outer skin cover is established outside the inlayer skin, the position of first through-hole with the position of second through-hole is corresponding.
2. The bionic drag-reducing fish skin as claimed in claim 1, wherein the first through holes are arranged in a semi-circle shape.
3. The bionic drag-reducing fish skin as claimed in claim 1, wherein the second through holes are arranged in a semi-circle shape.
4. The bionic drag-reducing fish skin as claimed in claim 3, wherein the shape of the valve is adapted to the shape of the second through hole.
5. The biomimetic drag reducing fish skin according to claim 1, wherein the diameter of the valve is larger than the diameter of the first through hole, so that the valve cannot pass through the first through hole.
6. The bionic drag reduction fish skin as claimed in claim 1, wherein the head and tail ends of the inner layer fish skin are fixed by glue.
7. The bionic drag reduction fish skin as claimed in claim 1, wherein the head and tail ends of the outer layer of fish skin are fixed by glue.
8. The bionic drag reduction fish skin as claimed in claim 1, wherein the outer layer fish skin and the inner layer fish skin are fixed by glue.
9. The bionic drag reduction fish skin as claimed in claim 1, wherein the inner layer fish skin and the outer layer fish skin are made of silica gel.
10. A method for manufacturing bionic drag reduction fish skin is characterized by comprising the following steps:
designing a production mold of the bionic drag reduction fish skin;
manufacturing the production mold by using a 3D printing technology;
pouring the mold by using silica gel to obtain an inner layer fish skin and an outer layer fish skin of the bionic drag reduction fish skin;
flattening and aligning the inner layer fish skin and the outer layer fish skin and then tightly adhering the inner layer fish skin and the outer layer fish skin;
curling the inner layer fish skin into a round shape, and using glue to stick the head end and the tail end of the inner layer fish skin tightly;
curling the outer-layer fish skin into a round shape, and using glue to stick the head end and the tail end of the outer-layer fish skin tightly.
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| CN114986996B (en) | 2023-07-18 |
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