CN110717975B - 3D printing-based porous model modeling method - Google Patents
3D printing-based porous model modeling method Download PDFInfo
- Publication number
- CN110717975B CN110717975B CN201910931584.7A CN201910931584A CN110717975B CN 110717975 B CN110717975 B CN 110717975B CN 201910931584 A CN201910931584 A CN 201910931584A CN 110717975 B CN110717975 B CN 110717975B
- Authority
- CN
- China
- Prior art keywords
- porous
- unit cell
- solid
- frame
- model
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Graphics (AREA)
- Geometry (AREA)
- Software Systems (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
Abstract
The invention provides a porous model modeling method based on 3D printing, which comprises the following steps: inputting a solid frame body to be porosified, defining the type of a porous unit cell structure, generating the porous unit cell structure, and defining and storing unit cell geometric parameters of the porous unit cell structure and fitting accuracy of a triangular patch according to the unit cell connecting rod axis of the porous unit cell structure; according to the frame geometric parameters of the solid frame to be porous, forming a porous characteristic structure by the porous unit cell structure; forming a porous solid structure by utilizing the solid frame to be porous; and giving the single cell geometric parameters to the porous solid structure to form a porous solid model with the geometric characteristics of the connecting rod. The invention only needs to store and display key information, thus the storage amount is small, the occupied resources are small, the display speed is faster when the model is modified and viewed, and the efficiency is higher than that of the traditional modeling mode under the same calculation level.
Description
Technical Field
The invention relates to the technical field of 3D printing, in particular to a porous model modeling method based on 3D printing.
Background
In the step of modeling the 3D printed porous structure connecting rod, according to the roughness of the surface of an object to be printed, the outer surface of the connecting rod is coated or enveloped through a triangular surface patch.
Since the macroscopic dimensions of the porous structure are large (millimeter scale, 50-60 mm), the unit cell and connecting rod dimensions of specific details are small, and the triangular patch dimensions are in the order of tens to hundreds of micrometers, a large number of triangular patches are generated when the connecting rod structure surface of the porous structure is coated or enveloped.
In modeling or modification, the technician generally does not need to consider and pay attention to the specific information of the fixed point of each triangular surface patch, but only needs to modify the geometric characteristic information of the porous connecting rod, such as the key information of the diameter, the cross-sectional area, the cross-sectional shape, the porosity and the like of the connecting rod.
When modeling or modifying, three-dimensional coordinates of each vertex of all triangular patches need to be recalculated, a model is generated, calculation time is long each time, information which a technician needs to pay attention to is needed, a small part of information which the technician pays attention to can be obtained after calculation of all information of all triangular patches is completed, and time waste is caused.
Disclosure of Invention
The invention aims to provide a 3D printing-based porous model modeling method which only needs to store and display key information, so that the storage capacity is small, the occupied resources are small, and the method has the effects of high display speed and high efficiency under the same calculation level when modifying and viewing a model.
The technical scheme provided by the invention is as follows:
the invention provides a porous model modeling method based on 3D printing, which comprises the following steps:
inputting a solid frame body to be porosified, defining the type of a porous unit cell structure, generating the porous unit cell structure, and defining and storing unit cell geometric parameters of the porous unit cell structure and fitting accuracy of a triangular patch according to the unit cell connecting rod axis of the porous unit cell structure;
according to the frame geometric parameters of the solid frame to be porous, forming a porous characteristic structure by the porous unit cell structure;
forming a porous solid structure by utilizing the solid frame to be porous;
endowing the single cell geometric parameters to the porous solid structure to form a porous solid model with connecting rod geometric characteristics;
and fitting the triangular surface patches on the porous solid model according to the fitting precision to form a porous model which can be processed or manufactured in an additive mode.
Further, the geometric parameters of the porous unit cell structure include the circumscribed polyhedral volume of the unit cell, the cross-sectional shape of the unit cell connecting rod, the diameter of the unit cell connecting rod, the chamfer at the intersection of the unit cell connecting rod and the unit cell connecting rod, and the porosity of the porous unit cell structure.
Further, according to the frame geometric parameters of the solid frame to be porous, forming the porous unit cell structure into the porous feature structure specifically includes:
according to the frame geometric parameters of the solid frame to be porous, adopting a rectangular array mode to enable the porous unit cell structure array to be the porous characteristic structure;
or (b)
According to the geometric characteristics of the solid frame body to be porous, adopting a form-following mapping mode to enable the porous unit cell structure to form the porous characteristic structure;
wherein, the frame geometric parameters of the solid frame to be porous comprise radius, height, width and length;
and each structural geometric parameter of the porous characteristic structure is not smaller than the frame geometric parameter of the solid frame to be porous.
Further, forming the porous feature structure into a porous solid structure by using the solid frame to be porous specifically includes:
cutting the porous characteristic structure of the solid frame to be porous to form the porous solid structure with the same geometric parameters as the frame of the solid frame to be porous;
or (b)
And filling the internal closed area of the solid frame to be porous with the porous unit cell structure to form the porous solid structure with the same frame geometric parameters as the solid frame to be porous.
Further, the unit cell geometric parameters are given to the porous solid structure, and the steps are included after the porous solid model with the connecting rod geometric characteristics is formed:
previewing the porous solid model;
and when the porous solid model is in error, modifying the frame geometric parameters and/or the unit cell geometric parameters.
The invention provides a computer device of a porous model modeling system, comprising:
the input module is used for inputting the type of the porous unit cell structure of the solid frame body to be porous;
the definition module is connected with the input module and used for defining and storing the unit cell geometric parameters of the porous unit cell structure and the fitting precision of the triangular patches according to the unit cell connecting rod axis of the porous unit cell structure;
the generating module is respectively connected with the input module and the definition module and is used for enabling the porous unit cell structure to form a porous characteristic structure according to the frame geometric parameters of the entity frame to be porous; the porous feature structure is used for forming a porous entity structure by utilizing the entity frame to be porous; forming the porous solid structure into a porous solid model with connecting rod geometric characteristics; fitting the triangular patches on the porous solid model according to the fitting precision to form a porous model which can be processed or manufactured in an additive way;
and the assignment module is respectively connected with the input module, the definition module and the generation module and is used for assigning the unit cell geometric parameters to the porous solid structure.
Further, the method further comprises the following steps:
the preview module is connected with the generation module and used for previewing the porous entity model;
the selection module is used for selecting a rectangular array mode to enable the porous unit cell structure array to be the porous characteristic structure or selecting a random mapping mode to enable the porous unit cell structure to form the porous characteristic structure;
the invention provides a terminal device, which comprises a memory, a processor and a computer program stored in the memory and capable of running on the processor, and is characterized in that the processor realizes the porous model modeling method based on 3D printing when running the computer program.
The present invention provides a storage medium having a computer program stored thereon, characterized in that: the computer program, when executed by a processor, implements the method for modeling a porous model based on 3D printing.
According to the modeling method of the porous model based on 3D printing, only key information is needed to be stored and displayed, so that the storage capacity is small, the occupied resources are small, the display speed is higher when the model is modified and viewed, and the efficiency is higher than that of a traditional modeling mode under the same calculation level; when the model is generated, specific detail information is restored, so that the detail characteristics of the final model can be ensured to be finally confirmed by technicians, and the modeling step is simplified; because the geometrical information of key characteristics is stored, the design of the whole and the details of the porous structure is not affected, and compared with the traditional triangular surface patch surface fitting, the accurate final model can be obtained more accurately as required.
Drawings
The above features, technical features, advantages and implementation manners of a porous model modeling method based on 3D printing will be further described in a clear and understandable manner with reference to the accompanying drawings.
FIG. 1 is a flow chart of one embodiment of a 3D printing-based porous model modeling method of the present invention;
FIG. 2 is a flow chart of another embodiment of a 3D printing-based porous model modeling method of the present invention;
FIG. 3 is a flow chart of yet another embodiment of a 3D printing-based porous model modeling method of the present invention;
FIG. 4 is a flow chart of a method of modeling a porous model based on 3D printing in accordance with the present invention;
FIG. 5 is a schematic diagram of diamond-type unit cell structure in one embodiment of a 3D printing-based porous model modeling method of the present invention;
FIG. 6 is a schematic diagram of a cylindrical solid frame to be porous in one embodiment of a 3D printing-based porous model modeling method of the present invention;
FIG. 7 is a schematic diagram of a cylindrical porous solid structure in one embodiment of a 3D printing-based porous model modeling method of the present invention;
FIG. 8 is a schematic diagram of a cylindrical porous solid model in one example of a 3D printing-based porous model modeling method of the present invention;
FIG. 9 is an enlarged view of a portion of FIG. 8 of a porous model modeling method based on 3D printing in accordance with the present invention;
FIG. 10 is a schematic diagram of a cylindrical porous model in one example of a 3D printing-based porous model modeling method of the present invention;
FIG. 11 is an enlarged view of a portion of FIG. 10 of a porous model modeling method based on 3D printing in accordance with the present invention;
fig. 12 is a schematic structural view of a terminal device according to the present invention;
FIG. 13 is a schematic diagram of the architecture of a computer device of a multi-hole modeling system of the present invention.
Reference numerals illustrate: 1. a diamond-type unit cell structure; 2. a single cell connecting rod axis; 3. externally connecting a cube; 41. a memory; 42. a computer program; 43. a processor; 51. an input module; 52. defining a module; 53. a generating module; 54. a valuation module; 55. a preview module; 56. and selecting a module.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will explain the specific embodiments of the present invention with reference to the accompanying drawings. It is evident that the drawings in the following description are only examples of the invention, from which other drawings and other embodiments can be obtained by a person skilled in the art without inventive effort.
For the sake of simplicity of the drawing, the parts relevant to the present invention are shown only schematically in the figures, which do not represent the actual structure thereof as a product. Additionally, in order to simplify the drawing for ease of understanding, components having the same structure or function in some of the drawings are shown schematically with only one of them, or only one of them is labeled. Herein, "a" means not only "only this one" but also "more than one" case.
In one embodiment of the present invention, as shown in fig. 1 and fig. 4-11, a method for modeling a porous model based on 3D printing includes the steps of:
s100, inputting a solid frame body to be porosified, defining the type of a porous unit cell structure, generating the porous unit cell structure, and defining and storing unit cell geometric parameters of the porous unit cell structure and fitting accuracy of triangular patches according to the unit cell connecting rod axis of the porous unit cell structure;
s200, according to the frame geometric parameters of the solid frame to be porous, forming a porous characteristic structure by the porous unit cell structure;
s300, forming a porous entity structure by utilizing the entity frame to be porous;
s400, endowing the single cell geometric parameters to the porous solid structure to form a porous solid model with connecting rod geometric characteristics;
and S500, fitting the triangular surface patches on the porous solid model according to the fitting precision to form a porous model which can be processed or manufactured in an additive way.
Specifically, the geometric parameters of the porous unit cell structure comprise the volume of an external polyhedron of the unit cell, the cross-sectional shape of the unit cell connecting rod, the diameter of the unit cell connecting rod, the chamfer at the intersection of the unit cell connecting rod and the unit cell connecting rod, and the porosity of the porous unit cell structure.
Specifically, in this embodiment, a cylindrical solid frame to be porous as shown in fig. 6 is input, a diamond-type porous unit cell structure 1 as shown in fig. 5 is defined, a unit cell connecting rod axis 2 of the diamond-type porous unit cell structure 1 is extracted to define the porosity of the diamond-type porous unit cell structure 1, the cross-sectional shape of the unit cell connecting rod, the diameter of the unit cell connecting rod, a chamfer at the intersection of the unit cell connecting rod and the unit cell connecting rod, an external square 3 of the diamond-type porous unit cell structure is made in the direction of the extracted unit cell connecting rod axis 2, the size of the diamond-type porous unit cell structure 1 is defined according to the size of the external square 3, the fitting precision of triangular patches is input, the higher the precision is, the more triangular patches of the required enveloping unit cell connecting rod are, the smoother the surface of the enveloping unit cell connecting rod is, and conversely, the surface of the enveloping unit cell connecting rod is rougher. And forming the porous characteristic structure into a cylindrical porous solid structure shown in fig. 7 by utilizing the cylindrical solid frame body to be porous. The cylindrical porous solid structure is endowed with the unit cell geometric parameters, and as the porosity of the diamond-type porous unit cell structure 1, the cross-sectional shape of the unit cell connecting rod, the diameter of the unit cell connecting rod, the chamfer at the intersection of the unit cell connecting rod and the size of the diamond-type porous unit cell structure 1 are predefined and stored in software, after the cylindrical porous solid structure is assigned, a cylindrical porous solid model with the geometric characteristics of the unit cell connecting rod is formed as shown in fig. 8, and as can be seen from fig. 8, the cross-sectional shape of the unit cell connecting rod inside the cylindrical porous solid model is thickened instead of a single line as shown in the cylindrical porous solid structure of fig. 7. Fitting the triangular patches on the cylindrical porous solid model according to the predefined and stored fitting precision of the triangular patches to form a cylindrical porous model as shown in fig. 10 for subsequent processing or additive manufacturing.
Based on the foregoing embodiment, the step of imparting the unit cell geometric parameter to the porous solid structure, after forming the porous solid model with the geometric feature of the connecting rod, includes the steps of:
s410 previewing the porous solid model;
s420, judging whether the porous entity model is wrong;
s430, when judging that the porous solid model is in error, modifying the frame geometric parameters and/or the unit cell geometric parameters;
specifically, after the cylindrical porous solid model is formed, previewing is performed, whether the size, the shape and the like of the formed cylindrical porous solid model are wrong or not is judged, when the size, the shape and the like of the formed cylindrical porous solid model are wrong, the radius, the height and the like of the cylindrical solid frame body to be porous are modified, the porosity of the diamond porous unit structure 1, the cross section shape of the unit connecting rod, the diameter and other geometric parameters of the unit connecting rod are modified, the correct cylindrical porous solid model is obtained, after the modification, previewing is performed again, and after the correction, the triangular surface patch is fitted on the porous solid model according to the fitting precision, so that the porous model which can be processed or manufactured in an additive mode is formed.
Specifically, under the same calculation level and the same fitting precision, the same porous model is generated by fitting, and compared with the traditional technical scheme, the technical scheme of the invention comprises the following steps:
another example of the present invention, as shown in fig. 2 and 4, is a porous model modeling method based on 3D printing, comprising the steps of:
s100, inputting a solid frame body to be porosified, defining the type of a porous unit cell structure, generating the porous unit cell structure, and defining and storing unit cell geometric parameters of the porous unit cell structure and fitting accuracy of a triangular surface patch according to the axis of a unit cell connecting rod of the porous unit cell structure;
s210, according to frame geometric parameters of a solid frame to be porosified, adopting a rectangular array mode to enable a porous unit cell structure array to be a porosification characteristic structure;
s310, cutting the porous characteristic structure of the solid frame to be porous to form a porous solid structure with the same geometric parameters as the frame of the solid frame to be porous;
s400, endowing the single cell geometric parameters to the porous solid structure to form a porous solid model with connecting rod geometric characteristics;
and S500, fitting the triangular patches on the porous solid model according to the fitting precision to form a porous model which can be processed or manufactured in an additive mode.
Specifically, a rectangular array mode is adopted, the porous unit cell structure array is a porous characteristic structure, namely, the porous unit cell structure translates and replicates on an X axis, a Y axis and an X axis to form a cuboid porous characteristic structure with the length and the width being larger than the radius of a solid frame body to be porous and the height being larger than the height of the solid frame body to be porous, and the solid frame body to be porous and the porous characteristic structure are subjected to Boolean intersection operation to form the porous solid structure with the same geometric parameters as the frame body of the solid frame body to be porous.
Specifically, the frame geometric parameters of the solid frame to be porous include radius, height, width and length.
Preferably, each structural geometric parameter of the porous characteristic structure is not smaller than the frame geometric parameter of the solid frame to be porous, so that the size of the porous characteristic structure is larger than that of the solid frame to be porous, and when the Boolean intersection operation is carried out, a complete porous solid structure is obtained, and the occurrence of the vacancy of a porous unit structure in the porous solid structure is avoided.
In yet another embodiment of the present invention, as shown in fig. 3 and 4, a porous model modeling method based on 3D printing includes the steps of:
s100, inputting a solid frame body to be porosified, defining the type of a porous unit cell structure, generating the porous unit cell structure, and defining and storing unit cell geometric parameters of the porous unit cell structure and fitting accuracy of a triangular surface patch according to the axis of a unit cell connecting rod of the porous unit cell structure;
s220, according to the geometric characteristics of the solid frame body to be porosified, adopting a form-following mapping mode to enable the porous unit cell structure to form a porosification characteristic structure;
s320, filling an internal closed area of the solid frame to be porous with a porous unit cell structure to form a porous solid structure with the same frame geometric parameters as the solid frame to be porous;
s400, endowing the single cell geometric parameters to the porous solid structure to form a porous solid model with connecting rod geometric characteristics;
s500, fitting a triangular patch on the porous solid model according to fitting precision to form a porous model which can be processed or manufactured in an additive way;
specifically, the following mapping manner in this embodiment refers to: cutting the porous feature structure of the solid frame body to be porous, wherein the porous unit cell structure at the edge of the formed porous solid structure is broken, at the moment, the corner points of the external polyhedron of the porous unit cell structure, which exceed the edge part of the porous solid structure, are projected on the surface of the solid structure to be porous along the normal direction of the curved surface curvature of the solid structure to be porous, the corner points are compressed along the projection direction, and along with the compression of the corner points, the porous unit cell structure is normalized and compressed along the projection direction, so that the porous solid structure with a complete porous unit cell structure and no break at the connecting part is formed.
In yet another example of the present invention, as shown in fig. 12 and 13, a computer apparatus of a porous model modeling system includes:
an input module 51 for inputting the type of the porous unit cell structure of the solid frame to be porous;
the definition module 52 is connected with the input module 51 and is used for defining and storing the geometric parameters of the unit cells of the porous unit cell structure and the fitting precision of the triangular patches according to the axis of the unit cell connecting rod of the porous unit cell structure;
the generating module 53 is respectively connected with the input module 51 and the defining module 52, and is used for enabling the porous unit cell structure to form a porous characteristic structure according to the frame geometric parameters of the entity frame to be porous; the porous feature structure is used for forming a porous entity structure by utilizing the entity frame to be porous; forming the porous solid structure into a porous solid model with connecting rod geometric characteristics; fitting the triangular patches on the porous solid model according to the fitting precision to form a porous model which can be processed or manufactured in an additive way;
and the assignment module 54 is respectively connected with the input module 51, the definition module 52 and the generation module 53 and is used for assigning the unit cell geometric parameters to the porous solid structure.
Specifically, the method further comprises the following steps:
a preview module 55, configured to preview the porous solid model;
a selection module 56, configured to select a rectangular array mode to use the porous unit cell structure as the porous feature structure, or select a random mapping mode to use the porous unit cell structure to form the porous feature structure.
An embodiment of the invention provides a storage medium having stored thereon a computer program 42, which computer program 42, when executed by a processor 43, implements all or part of the method steps of the first embodiment.
The present invention may be implemented by implementing all or part of the above-mentioned first embodiment method, or may be implemented by instructing the relevant hardware by means of a computer program 42, where the computer program 42 may be stored in a storage medium, and where the computer program 42, when executed by the processor 43, may implement the steps of the above-mentioned respective method embodiments. The computer program 42 comprises computer program code, which may be in the form of source code, object code, executable files, or some intermediate form, among others. The storage medium may include: any entity or device capable of carrying the computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), an electrical carrier signal, a telecommunications signal, a software distribution medium, and so forth. It should be noted that the computer readable medium contains content that can be appropriately scaled according to the requirements of jurisdictions in which such content is subject to legislation and patent practice, such as in certain jurisdictions in which such content is subject to legislation and patent practice, the computer readable medium does not include electrical carrier signals and telecommunication signals.
An embodiment of the invention also provides a terminal device comprising a memory 41 and a processor 43, the memory 41 having stored thereon a computer program 42 running on the processor 43, which processor 43 implements all or part of the method steps of the first embodiment when executing the computer program 42.
The processor 43 may be a central processing unit (Central Processing Unit, CPU), but may also be other general purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), off-the-shelf programmable gate arrays (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like that is a control center of the computer device, connecting various parts of the overall computer device using various interfaces and lines.
The memory 41 may be used to store the computer program and/or module, and the processor 43 implements various functions of the computer device by running or executing the computer program and/or module stored in the memory 41 and invoking data stored in the memory 41. The memory 41 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like; the storage data area may store data (such as audio data, video data, etc.) created according to the use of the cellular phone, etc. In addition, the memory 41 may include a high-speed random access memory, and may further include a nonvolatile memory such as a hard disk, a memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash Card (Flash Card), at least one magnetic disk storage device, a Flash memory device, or other volatile solid-state storage device.
In the foregoing embodiments, the descriptions of the embodiments are focused on, and the parts of a certain embodiment that are not described or depicted in detail may be referred to in the related descriptions of other embodiments.
The invention has the advantages that only key information is needed to be stored and displayed, so that the memory capacity is small, the occupied resources are small, the display speed is higher when the model is modified and viewed, and the efficiency is higher than that of the traditional modeling mode under the same calculation level; when the model is generated, specific detail information is restored, so that the detail characteristics of the final model can be ensured to be finally confirmed by technicians, and the modeling step is simplified; because the geometrical information of key characteristics is stored, the design of the whole and the details of the porous structure is not affected, and compared with the traditional triangular surface patch surface fitting, the accurate final model can be obtained more accurately as required.
It should be noted that the above embodiments can be freely combined as needed. The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (9)
1. The 3D printing-based porous model modeling method is characterized by comprising the following steps of:
inputting a solid frame body to be porosified, defining the type of a porous unit cell structure, generating the porous unit cell structure, and defining and storing unit cell geometric parameters of the porous unit cell structure and fitting accuracy of triangular patches according to the axis of a unit cell connecting rod of the porous unit cell structure;
according to the frame geometric parameters of the solid frame to be porous, forming a porous characteristic structure by the porous unit cell structure;
forming a porous solid structure by utilizing the solid frame to be porous;
endowing the single cell geometric parameters to the porous solid structure to form a porous solid model with connecting rod geometric characteristics;
and fitting the triangular surface patches on the porous solid model according to the fitting precision to form a porous model which can be processed or manufactured in an additive mode.
2. The method of modeling a porous model based on 3D printing of claim 1, wherein the geometric parameters of the porous unit cell structure comprise the circumscribed polyhedral volume of the unit cell, the cross-sectional shape of the unit cell connecting rod, the diameter of the unit cell connecting rod, the chamfer at the intersection of the unit cell connecting rod and the unit cell connecting rod, and the porosity of the porous unit cell structure.
3. The method for modeling a porous model based on 3D printing according to claim 1, wherein the forming the porous unit cell structure into the porous feature structure according to the frame geometry parameters of the solid frame to be porous specifically comprises:
according to the frame geometric parameters of the solid frame to be porous, adopting a rectangular array mode to enable the porous unit cell structure array to be the porous characteristic structure;
or (b)
According to the geometric characteristics of the solid frame body to be porous, adopting a form-following mapping mode to enable the porous unit cell structure to form the porous characteristic structure;
wherein, the frame geometric parameters of the solid frame to be porous comprise radius, height, width and length;
and each structural geometric parameter of the porous characteristic structure is not smaller than the frame geometric parameter of the solid frame to be porous.
4. The method for modeling a porous model based on 3D printing according to claim 1, wherein the forming the porous feature structure into a porous solid structure by using the solid frame to be porous specifically comprises:
cutting the porous characteristic structure of the solid frame to be porous to form the porous solid structure with the same geometric parameters as the frame of the solid frame to be porous;
or (b)
And filling the internal closed area of the solid frame to be porous with the porous unit cell structure to form the porous solid structure with the same frame geometric parameters as the solid frame to be porous.
5. The method for modeling a porous model based on 3D printing according to claim 1, wherein said step of applying said unit cell geometric parameters to said porous solid structure to form a porous solid model with connecting rod geometric features comprises the steps of:
previewing the porous solid model;
and when the porous solid model is in error, modifying the frame geometric parameters and/or the unit cell geometric parameters.
6. A computer apparatus for a porous model modeling system, comprising:
the input module is used for inputting the type of the porous unit cell structure of the solid frame body to be porous;
the definition module is connected with the input module and is used for defining and storing the geometric parameters of the unit cells of the porous unit cell structure and the fitting precision of the triangular patches according to the axis of the unit cell connecting rod of the porous unit cell structure;
the generating module is respectively connected with the input module and the definition module and is used for enabling the porous unit cell structure to form a porous characteristic structure according to the frame geometric parameters of the entity frame to be porous; the porous feature structure is used for forming a porous entity structure by utilizing the entity frame to be porous; forming the porous solid structure into a porous solid model with connecting rod geometric characteristics; fitting the triangular patches on the porous solid model according to the fitting precision to form a porous model which can be processed or manufactured in an additive way;
and the assignment module is respectively connected with the input module, the definition module and the generation module and is used for assigning the unit cell geometric parameters to the porous solid structure.
7. The computer apparatus of a cellular model modeling system of claim 6, further comprising:
the preview module is used for previewing the porous entity model;
and the selection module is used for selecting a rectangular array mode to enable the porous unit cell structure array to be the porous characteristic structure or selecting a random mapping mode to enable the porous unit cell structure to form the porous characteristic structure.
8. A terminal device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements a 3D printing based porous model modeling method according to any of claims 1-5 when the computer program is run.
9. A storage medium having a computer program stored thereon, characterized by: the computer program, when executed by a processor, implements a 3D printing-based porous model modeling method according to any of claims 1-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910931584.7A CN110717975B (en) | 2019-09-29 | 2019-09-29 | 3D printing-based porous model modeling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910931584.7A CN110717975B (en) | 2019-09-29 | 2019-09-29 | 3D printing-based porous model modeling method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110717975A CN110717975A (en) | 2020-01-21 |
| CN110717975B true CN110717975B (en) | 2023-04-25 |
Family
ID=69212034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910931584.7A Active CN110717975B (en) | 2019-09-29 | 2019-09-29 | 3D printing-based porous model modeling method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110717975B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112233244A (en) * | 2020-11-18 | 2021-01-15 | 北京数字工坊科技有限公司 | Porous model construction method, device, equipment and storage medium |
| CN114738990B (en) * | 2022-03-15 | 2023-01-24 | 武汉科技大学 | Gradual-change porous medium material for gas water heater, preparation method and application thereof, and gas water heater |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102067130A (en) * | 2008-04-14 | 2011-05-18 | 西门子产品生命周期管理软件公司 | System and method for modifying geometric relationships in a solid model |
| CN107997855A (en) * | 2017-11-30 | 2018-05-08 | 深圳先进技术研究院 | 3D porous supports method for establishing model, device and preparation system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10354442B2 (en) * | 2014-11-12 | 2019-07-16 | Autodesk Inc. | Generative modeling framework for deferred geometry generation |
-
2019
- 2019-09-29 CN CN201910931584.7A patent/CN110717975B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102067130A (en) * | 2008-04-14 | 2011-05-18 | 西门子产品生命周期管理软件公司 | System and method for modifying geometric relationships in a solid model |
| CN107997855A (en) * | 2017-11-30 | 2018-05-08 | 深圳先进技术研究院 | 3D porous supports method for establishing model, device and preparation system |
Non-Patent Citations (1)
| Title |
|---|
| 杨彩云 ; 刘海东 ; .2.5D结构复合材料实体模型的参数化建模.天津工业大学学报.2009,(第04期),全文. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110717975A (en) | 2020-01-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108073981B (en) | Method and apparatus for processing convolutional neural network | |
| CN110717975B (en) | 3D printing-based porous model modeling method | |
| US8310480B2 (en) | Method, medium, and system for compressing and decoding mesh data in three-dimensional mesh model | |
| CN112347546A (en) | BIM rendering method, device and computer-readable storage medium based on lightweight device | |
| CN111127615A (en) | Data scheduling method and device of three-dimensional model and electronic equipment | |
| CN113111201B (en) | Digital twin model lightweight method and system | |
| CN111179402A (en) | Target object rendering method, device and system | |
| CN114241105A (en) | Interface rendering method, device, equipment and computer readable storage medium | |
| CN112172155A (en) | Edge softening method and device for 3D printing, storage medium and 3D printer | |
| CN112529994A (en) | Three-dimensional model graph rendering method, electronic device and readable storage medium thereof | |
| CN114882161B (en) | Three-dimensional model data lightweight method and system for improving rendering speed | |
| CN111354050A (en) | Android-based picture compression method and device and storage medium | |
| TW202329042A (en) | Three-dimensional modeling method, system for three-dimensional modeling and non-transitory computer-readable storage medium | |
| CN115222579A (en) | Method, device and medium for scanning and converting dot matrix data | |
| CN112419463B (en) | Model data processing method, device, equipment and readable storage medium | |
| CN115471703A (en) | Two-dimensional code detection method, model training method, device, equipment and storage medium | |
| JP7247521B2 (en) | 3D shape data generation device, 3D modeling device, and 3D shape data generation program | |
| CN111832692A (en) | Data processing method, device, terminal and storage medium | |
| WO2021164305A1 (en) | Method for device for pattern rasterization, and storage medium | |
| CN111722823A (en) | Method and device for self-adapting screen resolution, storage medium and electronic equipment | |
| CN115495968B (en) | Grid dividing method, terminal and storage medium | |
| CN113688454B (en) | Modeling method and device for protective housing, electronic equipment and readable storage medium | |
| CN112380829B (en) | Document generation method and device | |
| CN116578241A (en) | Storage volume creation method, system, storage medium and electronic equipment | |
| CN109324797B (en) | Desktop icon generation method, computer readable storage medium and terminal equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |