CN112685845B - Digital twin part assembly method, terminal and computer storage medium - Google Patents
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Abstract
The invention discloses a digital twin part assembly method, a terminal and a computer storage medium, wherein the digital twin part assembly method comprises the following steps: acquiring a digital twin part model from a cloud part library, wherein the digital twin part model comprises a first part model and a second part model; and the assembly body is obtained in the 3D canvas through the attachment of the first anchor point on the first part model and the second anchor point on the second part model, the digital twin part model is not required to be downloaded and stored from a third party tool, the assembly body is not required to be obtained by installing specific software, and the assembly is carried out in a browser interface, so that the installation-free and maintenance-free assembly of the digital twin part is realized.
Description
Technical Field
The invention relates to the field of 3D drawing, in particular to a digital twin part assembly method, a terminal and a computer storage medium.
Background
Cloud-on-enterprise and cloud manufacturing have been the major trends, and become wind vane for manufacturing industry transformation and upgrading. However, the industrial manufacturing industry has greatly fallen behind other industries in the process of data formation and cloud end formation due to high requirements on originality and confidentiality of drawings and processes. As the manufacturing industry matures, more and more industry products tend to standardize. Compared with the customized parts, the industrial standard parts can greatly reduce the production cost and development period of the product. A large portion of automated machines or production lines can be assembled from increasingly modular standard industry, as can music modules. The machine design process is the assembly design function in the mainstream CAD software at present. However, prior art assemblies have been made by defining geometric constraints to achieve assembly between parts, and a large, complex assembly typically contains several times the number of parts, resulting in a time-consuming and labor-consuming project from creation to maintenance, modification of the assembly.
Disclosure of Invention
The invention mainly aims to provide a digital twin part assembly method, a terminal and a computer storage medium, and aims to provide a cloud digital twin part assembly method free of installation and maintenance.
Acquiring a digital twin part model from a cloud part library, wherein the digital twin part model comprises a first part model and a second part model;
and fitting the first anchor point on the first part model and the second anchor point on the second part model in the 3D canvas to obtain the assembly.
In one embodiment, before the step of obtaining the digital twin part model in the cloud part library, the method further includes:
Analyzing a physical model and a surface model corresponding to the digital twin part model from a 3D model file, wherein the physical model comprises topology and geometric information of the digital twin part model, and the surface model is used for rendering the physical model so as to display the physical model on a 3D canvas;
Attaching the assembly anchor points to the entity model displayed on the 3D canvas based on preset assembly anchor point information to obtain the digital twin part model;
and storing the digital twin part model in a cloud part library.
In one embodiment, the solid model includes a first part solid model and a second part solid model, and the step of attaching the assembly anchor to the solid model displayed on the 3D canvas based on preset assembly anchor information to obtain the digital twin part model includes:
Attaching a first anchor point to the first part entity model displayed on the 3D canvas according to the corresponding relation between the first anchor point and a second anchor point in preset assembly anchor point information to obtain a first part model; and attaching the second anchor point to the second part entity model displayed on the 3D canvas to obtain a second part model.
In one embodiment, the step of obtaining the digital twin part model in the cloud part library includes:
Acquiring an API command input by a user in the 3D canvas;
And acquiring a digital twin part model corresponding to the ID from a cloud part library according to the ID in the API command.
In one embodiment, the step of obtaining the assembly in the 3D canvas by attaching the first anchor point on the first part model to the second anchor point on the second part model includes:
attaching a second anchor point on the second part model to a first anchor point on the first part model according to an anchor point selection sequence input by a user based on an assembly mode; or (b)
And attaching the first anchor point on the first part model to the second anchor point on the second part model to obtain an assembly.
In one embodiment, the digital twinned part assembly method further comprises:
When the first anchor point is attached to the second anchor point, changing the relative position of the first anchor point attached to the second anchor point according to a rotating instruction input by a user.
In one embodiment, the digital twinned part assembly method further comprises:
based on an editing mode, acquiring physical dimensions of the physical model input by a user, and rendering the physical model with the physical dimensions through the surface model to adjust the dimensions of the digital twin part model to the physical dimensions.
In an embodiment, the user is an authorized user, and the step of obtaining a digital twin part model in the cloud part library, where the digital twin part model includes a first part model and a second part model, further includes:
And when receiving partner invitation information input by the user, setting the partner as the authorized user.
In addition, in order to achieve the above object, the present invention also provides a terminal including a memory, a processor, and a digital twin part assembling program stored on the memory and executable on the processor, which when executed by the processor, implements the steps of the digital twin part assembling method as described above.
In addition, in order to achieve the above object, the present invention also provides a computer storage medium having stored thereon the digital twin part fitting method program which, when executed by a processor, implements the steps of the digital twin part fitting method as described above.
According to the invention, the digital twin part model is obtained from the cloud part library, the digital twin part model comprises the first part model and the second part model, the assembly body is obtained in the 3D canvas through the attachment of the first anchor point on the first part model and the second anchor point on the second part model, the digital twin part model is not required to be downloaded and stored from a third party tool, and specific software is not required to be installed to obtain the assembly body, and the assembly is carried out in a browser interface, so that the installation-free and maintenance-free assembly of the digital twin part is realized.
Drawings
Fig. 1 is a schematic diagram of a hardware structure of a terminal for implementing various embodiments of the present invention;
FIG. 2 is a schematic flow chart of a first embodiment of the digital twin part assembly method of the present invention;
FIG. 3 is a schematic view of the structure of a first part model and a second part model of the present invention;
FIG. 4 is a schematic view of an assembly of a first part model and a second part model according to the present invention;
FIG. 5 is a schematic view of the structure of the assembly of the present invention.
The achievement of the object, functional features and advantages of the present invention will be described with reference to the embodiments with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The invention provides a terminal, and referring to fig. 1, fig. 1 is a schematic structural diagram of a hardware operation environment related to an embodiment of the invention.
It should be noted that fig. 1 may be a schematic structural diagram of a hardware operating environment of a terminal. The terminal of the embodiment of the invention can comprise hardware devices such as a PC (Personal Computer ), a portable computer, a server and the like.
As shown in fig. 1, the terminal includes: a processor 1001, such as a CPU, memory 1005, user interface 1003, network interface 1004, communication bus 1002. Wherein the communication bus 1002 is used to enable connected communication between these components. The user interface 1003 may include a Display, an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may further include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a stable memory (non-volatile memory), such as a disk memory. The memory 1005 may also optionally be a storage device separate from the processor 1001 described above.
Optionally, the terminal may also include RF (Radio Frequency) circuitry, sensors, wiFi modules, and the like.
It will be appreciated by those skilled in the art that the terminal structure shown in fig. 1 is not limiting of the terminal and may include more or fewer components than shown, or may combine certain components, or a different arrangement of components.
As shown in fig. 1, an operation terminal, a network communication module, a user interface module, and a digital twin part assembly program may be included in a memory 1005 as a computer storage readable storage medium. The operation terminal is a program for managing and controlling terminal hardware and software resources, and supports the operation of digital twin part assembly programs and other software or programs.
The terminal shown in fig. 1 can be used to provide an installation-free and maintenance-free cloud three-dimensional digital twin part assembly method, and the user interface 1003 is mainly used for detecting or outputting various information, such as inputting authentication information, outputting digital twin accessories and the like; the network interface 1004 is mainly used for interacting with a background server and communicating; the processor 1001 may be configured to call a digital twin part assembly program stored in the memory 1005 and perform the following operations:
Acquiring a digital twin part model from a cloud part library, wherein the digital twin part model comprises a first part model and a second part model;
and fitting the first anchor point on the first part model and the second anchor point on the second part model in the 3D canvas to obtain the assembly.
According to the invention, the digital twin part model is obtained from the cloud part library, the digital twin part model comprises the first part model and the second part model, the assembly body is obtained in the 3D canvas through the attachment of the first anchor point on the first part model and the second anchor point on the second part model, the digital twin part model is not required to be downloaded and stored from a third party tool, and specific software is not required to be installed to obtain the assembly body, and the assembly is carried out in a browser interface, so that the installation-free and maintenance-free assembly of the digital twin part is realized.
The specific implementation manner of the mobile terminal is basically the same as the following examples of the digital twin part assembly method, and will not be repeated here.
Based on the above structure, various embodiments of the digital twin part assembly method of the present invention are presented.
The invention provides a digital twin part assembly method.
Referring to fig. 2, fig. 2 is a schematic flow chart of a first embodiment of the digital twin part assembly method of the present invention.
In the present embodiment, an embodiment of a digital twin part assembly method is provided, it being noted that although a logic sequence is shown in the flow chart, in some cases the steps shown or described may be performed in a different order than that shown or described herein.
In this embodiment, the digital twin part assembly method includes:
S10, acquiring a digital twin part model from a cloud part library, wherein the digital twin part model comprises a first part model and a second part model;
The cloud part library is used for storing various digital twin part models, the digital twin part models are used for constructing an assembly body, the digital twin part models comprise a first part model and a second part model which form the assembly body, the second part model can be a connecting piece model used for connecting the first part model or can be the same or different from the first part model, the second part model is used as the connecting piece model for explanation in the embodiment, and referring to fig. 3, fig. 3 is a first part model (right side of fig. 3) and a second part model (left side of fig. 3).
In one embodiment, step S10 includes:
Step a, acquiring an API command input by a user in the 3D canvas;
and b, acquiring a digital twin part model corresponding to the ID from a cloud part library according to the ID in the API command.
The 3D canvas is a browser interface for drawing the 3D part assembly, an API for inquiring the digital twin part model is arranged on the 3D canvas, and a user inputs the ID of the digital twin part model in the API, namely an API command, so that the digital twin part model corresponding to the ID can be obtained from the cloud part library.
The cloud part library should store the digital twin part model in advance, and in some embodiments, before step S10, the method further includes:
C, resolving a solid model and a surface model corresponding to the digital twin part model from a 3D model file, wherein the solid model comprises topology and geometric information of the digital twin part model, and the surface model is used for rendering the solid model so as to display the solid model on a 3D canvas;
D, attaching the assembly anchor points to the entity model displayed on the 3D canvas based on preset assembly anchor point information to obtain the digital twin part model;
and e, storing the digital twin part model in a cloud part library.
Firstly, the topology, geometry and color information of parts, namely solid models, are resolved from 3D model files of other CAD data formats (such as STEP format), and the common representation method of the solid models comprises Construction Solid Geometry (CSG) and Boundary Representation (BREP), wherein the BREP representation method contains the topology information and the geometric information of points, edges and faces of geometric bodies, and becomes the main representation method of the current CAD system. Topology, geometry, and color information of the part can be parsed from the 3D model file using a commercial or open source 3D geometry kernel (e.g., without limitation parasolid, opencascade, etc.). The shape and appearance information of the part, namely a surface model, is calculated, the surface model is usually composed of triangular meshes composed of a plurality of vertexes (the vertexes can contain coordinate information, normal vectors, textures, illumination and the like) and a plurality of triangles represented by vertex serial number indexes, the common format is obj, ply, stl and the like, the surface model is used for simulating the surface of a complex object, and the surface model can be obtained by combining a triangular meshing algorithm and color information calculation. The surface model renders the solid model, and the solid model is displayed on a 3D canvas.
The calculated part may be used to obtain assembly anchor information for an effective assembly relationship with other parts, the assembly anchor being points attached to the surface of the part for a fixed assembly relationship with the connection, having a particular orientation, including a fixed coordinate system. The assembly anchor points should contain some engineering information of the part, for example, the part can only form an effective assembly relation with some specific parts, or can only be assembled from some specific positions in some specific mode, the assembly anchor points have different types, the assembly anchor point information contains corresponding relations among different assembly anchor points, and a group of assembly anchor points with corresponding relations can realize effective assembly.
And finally, attaching the assembly anchor points to the solid model displayed on the 3D canvas to obtain a digital twin part model, and storing the digital twin part model in a cloud part library.
In some embodiments, step c further comprises:
Step c1, attaching a first anchor point to the first part entity model displayed on a 3D canvas according to the corresponding relation between the first anchor point and a second anchor point in preset assembly anchor point information to obtain a first part model; and attaching the second anchor point to the second part entity model displayed on the 3D canvas to obtain a second part model.
Only if the anchor point on the first part model and the anchor point of the second part model have a corresponding relation, the effective assembly can be realized, the first anchor point and the second anchor point with the corresponding relation are respectively attached to the first part entity model and the second part entity model, the first part model and the second part model are obtained, and the first part model and the second part model are effectively adapted.
And step S20, attaching the first anchor point on the first part model and the second anchor point on the second part model in the 3D canvas to obtain an assembly.
The first part model is connected with the second part model through the laminating of anchor point, and the anchor point that sets up on the first part model is first anchor point, and the anchor point that sets up on the second part model is second anchor point, and first anchor point and second anchor point are different in the display structure, only can realize the laminating when first anchor point and second anchor point have corresponding relation. And when the first anchor point on the first part model and the second anchor point on the second part model are bonded, an assembly body can be formed. Fig. 4 is a schematic structural diagram of a fitting structure of a first anchor point on a first part model and a second anchor point on a second part model (a connector model), and fig. 5 is a schematic structural diagram of an assembly formed by connecting a plurality of first part models through the connector model, and a schematic structural diagram of a table frame assembly.
In some embodiments, step S20 includes:
F, based on an assembly mode, attaching a second anchor point on the second part model to a first anchor point on the first part model according to an anchor point selection sequence input by a user; or (b)
And g, attaching the first anchor point on the first part model to the second anchor point on the second part model to obtain an assembly.
In the assembly mode, a user defines an assembly relationship between any of the first part model and the second part model by selecting an assembly anchor point, selects a first anchor point from the first part model, selects a second anchor point from the second part model, assembles the two anchor points together in a face-to-face fit manner, and stores the assembly relationship in an assembly element form in an assembly body design. Thus an assembly design comprises several parts and several assembly elements. After clicking two anchor points that need laminating in proper order, first part model and second part model can be assembled together with the mode that anchor point laminated. The user can assemble the UI interface to see if an anchor has been selected. When a user selects a first anchor point, the first anchor point on the first part model is attached to a second anchor point on the second part model; when the user first selects the second anchor point, the second anchor point on the second part model is attached to the first anchor point on the first part model. Meanwhile, an API for deleting the assembly element is further provided on the 3D canvas, so that a user can release the assembly relation between the two models.
In some embodiments, after the first anchor point is attached to the second anchor point, the relative position of the first anchor point and the second anchor point after attachment is changed according to a rotation instruction input by a user.
And for the assembly relation which cannot be uniquely determined, the relative position of the first anchor point and the second anchor point after being attached is adjusted in a rotating or overturning mode until the assembly relation is adjusted to a mode required by a user.
According to the method, the digital twin part model is obtained from the cloud part library, the digital twin part model comprises the first part model and the second part model, the assembly body is obtained in the 3D canvas through the attachment of the first anchor point on the first part model and the second anchor point on the second part model, the digital twin part model is not required to be downloaded and stored from a third party tool, specific software is not required to be installed to obtain the assembly body, and the assembly is carried out in a browser interface, so that the installation-free and maintenance-free assembly of the digital twin part is realized.
A second embodiment of the digital twinned part assembly method of the present invention is presented. The digital twin part assembly method further comprises the following steps:
And h, based on an editing mode, acquiring the physical size of the physical model input by a user, and rendering the physical model with the physical size through the surface model so as to adjust the size of the digital twin part model to the physical size.
The embodiment provides an editing mode, in which a user inputs the physical size of a solid model in a 3D canvas, and can change the size of a digital twin part model, and the input mode can be that a mouse drags stretching buttons arranged at two ends of the digital twin part model, or can be that a size numerical value is input.
Specifically, the surface model renders the solid model according to the physical size input by the user, and a digital twin part model with the size being the physical size input by the user is obtained.
It should be noted that, in the editing mode, other operations may be performed, for example, a 6-dimensional operation button is disposed at the center of the digital twin part model, so that the user may change the coordinate information of x, y and z of the model and the rotation gesture of the model through mouse dragging.
A third embodiment of the digital twinned part assembly method of the present invention is presented. The user is an authorized user, a digital twin part model is obtained from a cloud part library, and before the step of obtaining the digital twin part model including the first part model and the second part model, the method further comprises:
and i, setting the partner as the authorized user when receiving partner invitation information input by the user.
It should be noted that only authorized users are allowed to execute the digital twin part assembling method provided in the present embodiment. When an authorized user invites a partner to participate in the assembly of the digital twin part together, partner invitation information including the ID of the partner is input. And after receiving the partner invitation information, setting the partner as an authorized user by setting the partner ID as an authorized ID. The embodiment can also set authority categories of the collaborators, wherein the authority categories comprise read-only authorities and editable authorities.
The embodiment can also set an authorized team, and set a permission category for each member in the team.
In addition, the embodiment of the invention also provides a terminal, which comprises a memory, a processor and a digital twin part assembly program stored on the memory and capable of running on the processor, wherein the digital twin part assembly program realizes the steps of the digital twin part assembly method when being executed by the processor.
In addition, the embodiment of the invention also provides a computer storage medium, wherein the computer storage medium is stored with a digital twin part assembly program, and the digital twin part assembly program realizes each step of the digital twin part assembly method when being executed by a processor.
Note that the computer storage medium may be provided in the terminal-based system.
The specific implementation of the computer readable storage medium of the present invention is basically the same as the above-mentioned embodiments of the digital twin part assembly method, and will not be described herein.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal device (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present invention.
The foregoing description of the preferred embodiments of the present invention should not be taken as limiting the scope of the invention, but rather should be understood to cover all modifications, equivalents, and alternatives falling within the scope of the invention as defined by the following description and drawings, or by direct or indirect application to other relevant art(s).
Claims (6)
1. The digital twin part assembly method is characterized by comprising the following steps of:
Acquiring a digital twin part model from a cloud part library, wherein the digital twin part model comprises a first part model and a second part model;
fitting a first anchor point on the first part model and a second anchor point on the second part model in a 3D canvas to obtain an assembly;
Before the step of obtaining the digital twin part model in the cloud part library, the method further comprises the following steps:
Analyzing a physical model and a surface model corresponding to the digital twin part model from a 3D model file, wherein the physical model comprises topology and geometric information of the digital twin part model, and the surface model is used for rendering the physical model so as to display the physical model on a 3D canvas;
Attaching the assembly anchor points to the entity model displayed on the 3D canvas based on preset assembly anchor point information to obtain the digital twin part model;
storing the digital twin part model in a cloud part library;
The step of attaching the assembly anchor point to the solid model displayed on the 3D canvas based on preset assembly anchor point information to obtain the digital twin part model comprises the following steps:
attaching a first anchor point to the first part entity model displayed on the 3D canvas according to the corresponding relation between the first anchor point and a second anchor point in preset assembly anchor point information to obtain a first part model; attaching the second anchor point to the second part entity model displayed on the 3D canvas to obtain a second part model;
The digital twin part assembly method further comprises the following steps:
when the first anchor point is attached to the second anchor point, changing the relative position of the first anchor point attached to the second anchor point according to a rotating instruction input by a user;
based on an editing mode, acquiring physical dimensions of the physical model input by a user, and rendering the physical model with the physical dimensions through the surface model to adjust the dimensions of the digital twin part model to the physical dimensions.
2. The method for assembling a digital twin part as defined in claim 1, wherein the step of obtaining a digital twin part model from a cloud part library comprises:
Acquiring an API command input by a user in the 3D canvas;
And acquiring a digital twin part model corresponding to the ID from a cloud part library according to the ID in the API command.
3. The method of digital twinning part assembly of claim 1, wherein the step of obtaining an assembly in a 3D canvas by fitting a first anchor point on the first part model to a second anchor point on the second part model comprises:
attaching a second anchor point on the second part model to a first anchor point on the first part model according to an anchor point selection sequence input by a user based on an assembly mode; or attaching the first anchor point on the first part model to the second anchor point on the second part model to obtain an assembly.
4. The method for assembling a digital twin part as defined in claim 1, wherein the user is an authorized user, and wherein the step of obtaining a digital twin part model from a cloud part library, wherein the digital twin part model comprises a first part model and a second part model is preceded by the step of:
And when receiving partner invitation information input by the user, setting the partner as the authorized user.
5. A terminal comprising a memory, a processor and a digital twin part assembly program stored on the memory and running on the processor, which when executed by the processor, implements the steps of the digital twin part assembly method of any of claims 1 to 4.
6. A computer storage medium, characterized in that it has stored thereon a digital twin part assembly program which, when executed by a processor, implements the steps of the digital twin part assembly method according to any one of claims 1 to 4.
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