CN116352090A - Additive manufacturing blank of honeycomb member and additive manufacturing method - Google Patents
Additive manufacturing blank of honeycomb member and additive manufacturing method Download PDFInfo
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- CN116352090A CN116352090A CN202310239295.7A CN202310239295A CN116352090A CN 116352090 A CN116352090 A CN 116352090A CN 202310239295 A CN202310239295 A CN 202310239295A CN 116352090 A CN116352090 A CN 116352090A
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- 239000000654 additive Substances 0.000 title claims abstract description 58
- 230000000996 additive effect Effects 0.000 title claims abstract description 58
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 claims abstract description 16
- 230000003014 reinforcing effect Effects 0.000 claims description 50
- 239000000463 material Substances 0.000 claims description 20
- 230000002787 reinforcement Effects 0.000 claims description 18
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 7
- 229910000838 Al alloy Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000011800 void material Substances 0.000 abstract description 3
- 230000008021 deposition Effects 0.000 description 8
- 230000008018 melting Effects 0.000 description 7
- 238000002844 melting Methods 0.000 description 7
- 239000000843 powder Substances 0.000 description 6
- 238000000137 annealing Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
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- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000010894 electron beam technology Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229910000601 superalloy Inorganic materials 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F5/10—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
- B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/60—Treatment of workpieces or articles after build-up
- B22F10/64—Treatment of workpieces or articles after build-up by thermal means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/60—Treatment of workpieces or articles after build-up
- B22F10/66—Treatment of workpieces or articles after build-up by mechanical means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
- B33Y40/20—Post-treatment, e.g. curing, coating or polishing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y80/00—Products made by additive manufacturing
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The invention discloses an additive manufacturing blank and an additive manufacturing method of a honeycomb member, belongs to the technical field of additive manufacturing, and aims to solve the problems that in the prior art, the shape of an internal structure of a honeycomb member formed by adopting additive manufacturing is difficult to change again after forming, and the forming size is limited by equipment. The blank comprises a blank main body and a clamping part, wherein a preset vacancy is arranged on the blank main body, the preset vacancy is hexagonal, and the shape of a hole on a honeycomb-shaped member is regular hexagon; the width of the preset empty space is smaller than the width of the holes on the honeycomb member along the drawing direction; the width of the preset void is greater than the width of the hole in the honeycomb member in a direction perpendicular to the drawing direction. The method comprises the steps of preparing a blank by adopting an additive manufacturing mode; in the two adjacent layers, the scanning strategy of the next layer is the same as the scanning strategy of the previous layer; and drawing and forming the blank. The invention can be used for additive manufacturing of honeycomb members.
Description
Technical Field
The invention belongs to the technical field of additive manufacturing, and particularly relates to an additive manufacturing blank of a honeycomb member and an additive manufacturing method.
Background
The additive manufacturing technology, also called as a 3D printing technology, is a manufacturing technology for realizing the formation of a complex structure in a layer-by-layer superposition mode, can realize the net near formation of parts, and can realize the limitation of the traditional processing method on the structure shape.
The honeycomb member is formed by adopting the existing additive manufacturing technology, the structural design is usually carried out in the model design stage, the appearance of the internal structure is difficult to change again after forming, the size of a formed part is limited by the size of forming equipment, the part exceeding the maximum forming size of the equipment cannot be formed, the part with the larger size can only be manufactured by the equipment with the larger forming size, and the equipment investment cost is increased.
Disclosure of Invention
In view of the above analysis, the present invention aims to provide an additive manufacturing blank and an additive manufacturing method for a honeycomb member, which are used for solving the problems that in the prior art, the shape of an internal structure of a honeycomb member formed by additive manufacturing is difficult to change again after forming, and the forming size is limited by equipment.
The aim of the invention is mainly realized by the following technical scheme:
the invention provides an additive manufacturing blank of a honeycomb member, which comprises a blank main body and clamping parts arranged at two ends of the blank main body along the drawing direction, wherein a preset vacancy is arranged on the blank main body, the preset vacancy is hexagonal, and holes on the honeycomb member are regular hexagonal;
the width of the preset empty space is smaller than the width of the holes on the honeycomb member along the drawing direction;
the width of the preset void is greater than the width of the hole in the honeycomb member in a direction perpendicular to the drawing direction.
Further, a plurality of connecting holes are formed in the clamping part.
Further, along the direction perpendicular to the drawing direction, both ends of the clamping part protrude out of the blank body to form a boss.
Further, the strength of the clamping portion is greater than the strength of the blank body.
Further, the clamping part is made of titanium alloy or stainless steel, and the blank main body is made of aluminum alloy.
Further, a reinforcing piece is arranged on one side, facing the blank main body, of the clamping portion, and the reinforcing piece and the clamping portion are integrally formed.
Further, the reinforcement includes first reinforcement section, second reinforcement section, third reinforcement section and fourth reinforcement section that connect gradually, and first reinforcement section and clamping part integrated into one piece.
Further, the first reinforcing section and the third reinforcing section are perpendicular to the clamping part, and the length of the first reinforcing section is greater than that of the third reinforcing section;
the second reinforcing section and the fourth reinforcing section are parallel to the clamping part, and the length of the second reinforcing section is longer than that of the fourth reinforcing section;
the material of the blank body is filled between the first reinforcing section, the second reinforcing section, the third reinforcing section and the fourth reinforcing section.
Further, the blank also comprises a deformation auxiliary rod, one end of the deformation auxiliary rod is fixedly connected with a boss formed by one clamping part, and the other end of the deformation auxiliary rod is fixedly connected with a boss formed by the other clamping part;
the diameter of the deformation auxiliary rod gradually increases along the direction gradually away from the transverse center line of the blank main body.
The invention also provides an additive manufacturing method of the honeycomb member, which comprises the following steps:
step 1: designing a blank model;
step 2: preparing a blank with the shape and structure consistent with those of the blank model by adopting an additive manufacturing mode, wherein the blank is the additive manufacturing blank of the honeycomb member;
in the two adjacent layers, the scanning strategy of the next layer is the same as the scanning strategy of the previous layer;
step 3: and drawing the blank to form, wherein the width of the preset vacancy is increased along the drawing direction and the width of the preset vacancy is reduced along the direction perpendicular to the drawing direction in the drawing process of the blank, so that the preset vacancy is deformed into the hole of the honeycomb member, and the additive manufacturing of the honeycomb member is completed.
Compared with the prior art, the invention has at least one of the following beneficial effects:
a) The blank for manufacturing the honeycomb member by the additive, provided by the invention, can realize the forming of honeycomb members with various shapes, different sizes, different structures and different space positions by printing preset vacancies, can improve the utilization rate of materials and additive manufacturing equipment, realize green manufacturing, meet the requirement of forming the lightweight complex structure, can improve the design of the preset vacancies, realize the forming of members with more complex structures, and can be separated from the limitation of the size of additive manufacturing equipment by drawing and forming before the forming of the honeycomb members.
B) The additive manufacturing blank of the honeycomb member provided by the invention can reduce the deformation of the clamping part in the drawing process by properly increasing the strength of the clamping part, so that the deformation is mainly concentrated on the main body of the blank.
C) According to the blank for manufacturing the honeycomb member by the additive, the reinforcing piece and the clamping part are integrally formed, the reinforcing piece and the clamping part are made of the same material, the strength is higher than that of the blank main body, and the strength of the connecting interface of the clamping part and the blank main body can be effectively improved and basically prevented from being separated in the stretching process by the arrangement of the reinforcing piece.
D) According to the blank for manufacturing the honeycomb member by the additive, the cross section size of the center of the main body of the blank is reduced by arranging the deformation auxiliary rod, and the cross section sizes of the two ends of the main body of the blank are increased, so that the deformation of the center of the blank is facilitated, and the deformation uniformity of the main body of the blank is further improved.
In the invention, the technical schemes can be mutually combined to realize more preferable combination schemes. Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the embodiments of the invention particularly pointed out in the written description and drawings.
Drawings
The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, like reference numerals being used to refer to like parts throughout the several views.
FIG. 1 is a schematic illustration of an additive manufactured blank for a honeycomb structure according to an embodiment of the present invention;
FIG. 2 is a schematic illustration of another exemplary structure of an additive manufactured blank for a honeycomb structure according to one embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a final energy member manufactured by the additive manufacturing method of a honeycomb member according to the second embodiment of the present invention.
Reference numerals:
1-a blank body; 2-a clamping part; 3-connecting holes; 4-presetting a vacancy; 5-honeycomb member; 6-holes; 7-a first reinforcement section; 8-a second reinforcement section; 9-a third reinforcing section; 10-a fourth reinforcement section; 11-deformation auxiliary rod.
Detailed Description
The following detailed description of preferred embodiments of the invention is made in connection with the accompanying drawings, which form a part hereof, and together with the description of the embodiments of the invention, are used to explain the principles of the invention and are not intended to limit the scope of the invention.
In the existing additive manufacturing process, in order to reduce the anisotropy of a component, the uniformity of the overall performance of the component is ensured, and in the process of manufacturing two adjacent layers of the additive, the anisotropy is reduced by adopting a laser angle deflection mode between a laser scanning strategy of the next layer and a laser scanning strategy of the last layer.
Example 1
The present embodiment provides an additive manufacturing blank for honeycomb members, referring to fig. 1 to 2, which includes a blank body 1 and clamping portions 2 provided at both ends of the blank body 1 in a drawing direction, wherein a preset void 4 is provided on the blank body 1. Wherein, the shape of the preset empty space 4 is a hexagon, the shape of the holes 6 on the honeycomb member 5 is a regular hexagon, and the width of the preset empty space 4 is smaller than the width of the holes 6 on the honeycomb member 5 along the drawing direction; the width of the preset voids 4 is greater than the width of the holes 6 in the honeycomb member 5 in a direction perpendicular to the drawing direction.
Compared with the prior art, the blank for manufacturing the honeycomb member by the additive is formed by printing the preset empty space 4, so that the honeycomb member with various shapes, different sizes, different structures and different space positions can be formed, the utilization rate of materials and additive manufacturing equipment can be improved, green manufacturing is realized, the light-weight complex structure forming requirement is met, on the other hand, the designability of the preset empty space 4 can be improved, the member with a more complex structure can be formed, and on the other hand, the member with a larger size can be formed by drawing the honeycomb member 5 before forming, so that the limitation of the size of additive manufacturing equipment can be removed.
In practice, the size and shape of the holes 6 of the cellular element 5 may vary, and correspondingly the size and shape of the preset voids 4.
As for the structure of the clamp 2, specifically, the following two modes can be adopted:
in one mode, a plurality of connecting holes 3 are formed in the clamping portion 2, and referring to fig. 2, connecting rods of the stretcher are inserted into the connecting holes 3, so that the stretcher is connected with the clamping portion 2.
Alternatively, both ends of the holding portion 2 protrude from the blank body 1 in a direction perpendicular to the drawing direction, thereby forming a boss, see fig. 1.
During the drawing process, since the clamping portion 2 is directly connected to the drawing machine, deformation occurs first, and this deformation is unfavorable for the deformation of the blank body 1, the strength (tensile strength) of the clamping portion 2 is greater than that of the blank body 1. In this way, by appropriately increasing the strength of the clamping portion 2, the deformation of the clamping portion 2 occurring during drawing can be reduced, so that the deformation is mainly concentrated on the blank body 1.
Specifically, the difference in strength between the clamping portion 2 and the blank body 1 can be achieved by selecting different materials, and the material of the clamping portion is illustratively titanium alloy or stainless steel, the material of the component body is aluminum alloy, and accordingly, for laser selective melting deposition, the powder laid by the forming of the clamping portion is titanium alloy powder or stainless steel powder, and the powder laid by the blank body 1 is aluminum alloy powder.
It should be noted that, since different materials are selected to form the clamping portion 2 and the blank body 1, the strength of the connection interface between the unavoidable clamping portion 2 and the blank body 1 is reduced, in order to avoid the separation of the clamping portion 2 and the blank body 1 during the stretching process, a reinforcing member is disposed on one side of the clamping portion 2 facing the blank body 1, referring to fig. 1, the reinforcing member and the clamping portion 2 are integrally formed, specifically, the reinforcing member includes a first reinforcing section 7, a second reinforcing section 8, a third reinforcing section 9 and a fourth reinforcing section 10 which are sequentially connected, the first reinforcing section 7 and the clamping portion 2 are integrally formed, the first reinforcing section 7 and the third reinforcing section 9 are perpendicular to the clamping portion 2, the length of the first reinforcing section 7 is greater than the length of the third reinforcing section 9, the second reinforcing section 8 and the fourth reinforcing section 10 are parallel to the clamping portion 2, and the length of the second reinforcing section 8 is greater than the length of the fourth reinforcing section 10, so that a spiral reinforcing member can be formed, and the material of the blank body 1 is filled in the first reinforcing section 7, the second reinforcing section 8, the third reinforcing section 9 and the fourth reinforcing section 10. Like this, because reinforcement and clamping part 2 integrated into one piece, the material of both is the same, and intensity is all higher than the intensity of blank main part 1, through the setting of reinforcement, can effectively improve and clamping part 2 and the intensity of the interface of being connected of blank main part 1, can avoid basically that clamping part 2 takes place the separation with blank main part 1 in the tensile in-process.
In order to further improve the uniformity of deformation of the blank main body 1, the blank further comprises a deformation auxiliary rod 11, see fig. 1, one end of the deformation auxiliary rod 11 is fixedly connected with a boss formed by one clamping part 2, the other end of the deformation auxiliary rod 11 is fixedly connected with a boss formed by the other clamping part 2, a center line perpendicular to the drawing direction of the blank main body 1 is defined as a transverse center line, the diameter of the deformation auxiliary rod 11 is gradually increased along the direction gradually away from the transverse center line of the blank main body 1, that is, the diameter of the deformation auxiliary rod 11 is smaller at a position close to the transverse center line of the blank main body 1, the diameter of the deformation auxiliary rod 11 is larger at a position away from the transverse center line of the blank main body 1, the cross-sectional dimension of the center position of the blank main body 1 is correspondingly reduced, and the cross-sectional dimensions of the two end positions of the blank main body 1 are increased, so that the deformation of the blank center can be more facilitated, and the uniformity of the deformation of the blank main body 1 is further improved.
Example two
The embodiment provides an additive manufacturing method of a honeycomb member, which comprises the following steps:
step 1: designing a blank model by utilizing three-dimensional drawing software such as SolidWorks, UG and the like;
step 2: preparing a blank with the shape and structure consistent with those of a blank model by adopting an additive manufacturing mode, wherein the blank is the additive manufacturing blank of the honeycomb member provided by the first embodiment;
in the additive manufacturing process, auxiliary supporting structures are added for stress concentration positions, suspension positions and the like so as to ensure the forming precision of the component;
in two adjacent layers, the scanning strategy of the next layer is the same as the scanning strategy of the last layer, and illustratively, the blank is manufactured by adopting laser selective melting, wherein the scanning strategy mainly refers to laser angle, forming power, scanning speed and layer thickness;
step 3: the blank is placed in a stretcher or a thermoforming device, the blank is subjected to drawing forming, the width of the preset empty space 4 is increased along the drawing direction in the drawing process of the blank, and the width of the preset empty space 4 is reduced along the direction perpendicular to the drawing direction, so that the preset empty space 4 is deformed into holes 6 of the honeycomb member 5, and the additive manufacturing of the honeycomb member is completed, and the blank is shown in fig. 3.
Before the blank is formed, the size, shape and position of the preset empty space 4 are designed according to the forming requirement of the honeycomb member 5; before additive manufacturing, selecting reasonable technological parameters according to the drawing forming direction, so that the forming material in the direction has certain plasticity; before drawing and forming, reasonable temperature, time, stretching force and other parameters are designed according to the characteristics of materials, the size and structural form of the preset empty space 4, and the like, but all parameters required for components with different structures are different, and are not described in detail herein.
Compared with the prior art, the method for manufacturing the honeycomb member by adding the material has the characteristics of high automation degree, easiness in operation, simple operation steps, easiness in implementation and the like, on the basis of the technical principle of drawing and forming the preset empty space 4, integrated printing of the preset empty space 4 and the integral structure of the blank is formed by a layer-by-layer stacking method, anisotropy of material performance caused by special solidification characteristics of additive manufacturing is utilized, the anisotropy is properly reserved and expanded through a specific scanning strategy, and the integral blank is drawn and formed to obtain the honeycomb member 5.
The material of the honeycomb member 5 may be an aluminum alloy, a titanium alloy, a superalloy, or the like.
In the drawing forming process, drawing temperature needs to be considered according to the material and plasticity of the component and the drawing deformation rate, and the drawing deformation rate is 10% or less in drawing forming, and a blank is directly drawn without heating; when the deformation rate of drawing forming exceeds 10%, the blank needs to be drawn in a high-temperature environment, the temperature selection range is generally 0.4-0.95 Tm (Tm, melting point of alloy material), and the high-temperature drawing forming environment can be realized by heating thermal resistance wires and the like.
Wherein the drawing temperature of the aluminum alloy blank is above 200 ℃, for example, 200-350 ℃; the drawing temperature of the titanium alloy blank is above 600 ℃, for example, 600-900 ℃; the drawing temperature of the superalloy blank is 600 ℃ or higher, for example, 600 to 900 ℃.
In order to be beneficial to the performance requirements of the later drawing direction, the compactness and the anisotropism of the internal tissues of the blank are ensured, the forming power of the titanium alloy blank is 100-300W, the scanning speed is 300-1000 mm/s, the layer thickness is 60-100 mu m, and the same laser scanning strategy is adopted between two adjacent layers, so that the continuous growth of columnar crystal and other tissues in the drawing direction can be ensured, and the material in the subsequent drawing direction has more excellent extensibility.
Considering that the preset empty space 4 needs to be drawn to obtain the holes 6 of the honeycomb member 5, in order to avoid cracking of the preset empty space 4 in the drawing process, arc chamfer angles are arranged at the corners of the preset empty space 4, and the radius of the arc chamfer angles is 0.1-20 mm. Thus, through the arrangement of the arc chamfer, stress concentration at the corner can be reduced, and the occurrence of the condition of tip cracking can be avoided.
Illustratively, in the step 2, the additive manufacturing method is one of laser selective melting deposition, electron beam selective melting deposition, laser melting deposition, electron beam fuse deposition, arc fuse deposition and laser fuse deposition.
Specifically, the laser selective melting deposition sequentially comprises the following steps: model preparation, powder raw material preparation, substrate preparation, equipment preparation, printing, workpiece taking, stress relief annealing, wire cutting, supporting removal and polishing.
Wherein the annealing temperature of the stress relief annealing is 200-1100 ℃, the heat preservation time is 0.5-20 h, and the cooling mode is furnace cooling or air cooling.
In the stress relief annealing process, the temperature rise and the temperature reduction rate in the drawing direction are smaller than those in the direction perpendicular to the drawing direction, the difference of the temperature rise rates is 10-15 ℃/min, and similarly, the temperature reduction rate in the drawing direction is smaller than that in the direction perpendicular to the drawing direction, and the difference of the temperature reduction rates is 10-15 ℃/min. This is because the anisotropy of the preform can be further enlarged by performing differential temperature rise and temperature fall, thereby promoting plastic deformation in the drawing direction.
The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention.
Claims (10)
1. The blank is characterized by comprising a blank main body and clamping parts arranged at two ends of the blank main body along the drawing direction, wherein preset vacancies are arranged on the blank main body, the preset vacancies are hexagonal in shape, and holes on the honeycomb member are regular hexagons in shape;
the width of the preset empty space is smaller than the width of the holes on the honeycomb member along the drawing direction;
the width of the preset empty space is larger than the width of the holes on the honeycomb member along the direction perpendicular to the drawing direction.
2. An additive manufactured blank for a honeycomb structure according to claim 1, wherein the clamping portion is provided with a plurality of connecting holes.
3. An additive manufactured blank for a honeycomb structure according to claim 1, wherein the two ends of the clamping portion protrude from the blank body in a direction perpendicular to the drawing direction to form a boss.
4. An additive manufactured blank for a honeycomb member according to claim 3, wherein the strength of the clamping portion is greater than the strength of the body of the blank.
5. An additive manufacturing blank for a honeycomb member according to claim 4, wherein the material of the clamping portion is a titanium alloy or stainless steel, and the material of the blank body is an aluminum alloy.
6. An additive manufacturing blank for honeycomb structures according to claim 5, wherein the side of the clamping portion facing the body of the blank is provided with a reinforcement element, which is integrally formed with the clamping portion.
7. The honeycomb member additive manufactured blank of claim 6, wherein the reinforcement comprises a first reinforcement section, a second reinforcement section, a third reinforcement section, and a fourth reinforcement section connected in sequence, the first reinforcement section being integrally formed with the clip portion.
8. The honeycomb member additive manufactured blank of claim 7, wherein the first and third reinforcing sections are each perpendicular to the nip and the length of the first reinforcing section is greater than the length of the third reinforcing section;
the second reinforcing section and the fourth reinforcing section are parallel to the clamping part, and the length of the second reinforcing section is longer than that of the fourth reinforcing section;
the material of the blank body is filled between the first reinforcing section, the second reinforcing section, the third reinforcing section and the fourth reinforcing section.
9. An additive manufacturing blank for a honeycomb member according to claim 3, wherein the blank further comprises a deformation auxiliary rod, one end of the deformation auxiliary rod is fixedly connected with a boss formed by one of the clamping parts, and the other end of the deformation auxiliary rod is fixedly connected with a boss formed by the other clamping part;
the diameter of the deformation auxiliary rod gradually increases along the direction gradually away from the transverse center line of the blank main body.
10. A method of additive manufacturing of a honeycomb member, comprising the steps of:
step 1: designing a blank model;
step 2: producing a blank conforming to the shape and structure of a blank model by means of additive manufacturing, the blank being an additive manufactured blank of a honeycomb member according to any one of claims 1 to 9;
in the two adjacent layers, the scanning strategy of the next layer is the same as the scanning strategy of the previous layer;
step 3: and drawing the blank to form, wherein the width of the preset vacancy is increased along the drawing direction and is reduced along the direction perpendicular to the drawing direction in the drawing process of the blank, so that the preset vacancy is deformed into the hole of the honeycomb member, and the additive manufacturing of the honeycomb member is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310239295.7A CN116352090A (en) | 2023-03-08 | 2023-03-08 | Additive manufacturing blank of honeycomb member and additive manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310239295.7A CN116352090A (en) | 2023-03-08 | 2023-03-08 | Additive manufacturing blank of honeycomb member and additive manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116352090A true CN116352090A (en) | 2023-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310239295.7A Pending CN116352090A (en) | 2023-03-08 | 2023-03-08 | Additive manufacturing blank of honeycomb member and additive manufacturing method |
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| Country | Link |
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| CN (1) | CN116352090A (en) |
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2023
- 2023-03-08 CN CN202310239295.7A patent/CN116352090A/en active Pending
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