CN112685845A - Digital twin part assembling method, terminal and computer storage medium - Google Patents
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Abstract
The invention discloses a digital twin part assembling method, a terminal and a computer storage medium, wherein the digital twin part assembling 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; 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 does not need to be downloaded and stored from a third-party tool, the assembly body is obtained without installing specific software, the assembly body is assembled in a browser interface, and the installation 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 assembling method, a terminal and a computer storage medium.
Background
Cloud manufacturing in enterprises is a great trend, and the enterprises become wind vane for transformation and upgrade of manufacturing industry. However, industrial manufacturing industry has been greatly lagged behind other industries in the process of datamation and cloud end because of the high requirements on originality and confidentiality of drawings and processes. As the manufacturing industry matures, more and more industries tend to standardize. Compared with the customized part, the production cost and the development period of the product can be greatly reduced by using the industrial standard part. A large portion of automated machines or production lines can be assembled from standard industrial products that are increasingly modular, as are modules of joy, with an endless variety of creativity. The machine design process is the assembly design function in the current mainstream CAD software. However, in the prior art, the assembly between the parts is realized by defining the geometric constraint relationship, and a large and complex assembly usually contains the geometric constraint relationship which is several times as many as the number of the parts, which results in that the assembly is a time-consuming and labor-consuming project from creation to maintenance and modification.
Disclosure of Invention
The invention mainly aims to provide a digital twin part assembling method, a terminal and a computer storage medium, and aims to provide an installation-free and maintenance-free cloud digital twin part assembling method.
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 obtaining an assembly body in the 3D canvas through the fitting of the first anchor point on the first part model and the second anchor point on the second part model.
In one embodiment, before the step of obtaining the digital twin part model from the cloud part library, the method further includes:
parsing a solid model and a surface model corresponding to the digital twin part model from a 3D model file, wherein the solid model includes topological and geometric information of the digital twin part model, and the surface model is used for rendering the solid model to display the solid model on a 3D canvas;
attaching an assembly anchor to the entity model displayed on the 3D canvas based on preset assembly anchor 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 attaching an 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 solid 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 comprises:
acquiring an API command input by a user on 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 an assembly in the 3D canvas by fitting a first anchor point on the first part model to a second anchor point on the second part model comprises:
based on an assembly mode, according to an anchor point selection sequence input by a user, attaching a second anchor point on the second part model to a first anchor point on the first part model; or
And fitting the first anchor point on the first part model to the second anchor point on the second part model to obtain the assembly body.
In one embodiment, the digital twin part assembly method further comprises:
and after the first anchor point and the second anchor point are attached, changing the relative position of the first anchor point and the second anchor point after the first anchor point and the second anchor point are attached according to a rotation instruction input by a user.
In one embodiment, the digital twin part assembly method further comprises:
and acquiring the physical dimension of the solid model input by a user based on an editing mode, and rendering the solid model with the physical dimension through the surface model so as to adjust the dimension of the digital twin part model to the physical dimension.
In one embodiment, the user is an authorized user, and the step of obtaining a digital twin part model in the cloud part library, the digital twin part model including a first part model and a second part model, further includes:
and when the partner invitation information input by the user is received, setting the partner as the authorized user.
Furthermore, in order to achieve the above object, the present invention also provides a terminal comprising a memory, a processor and a digital twin part assembling program stored on the memory and executable on the processor, the digital twin part assembling program, when executed by the processor, implementing the steps of the digital twin part assembling method as described above.
Further, to achieve the above object, the present invention also provides a computer storage medium having stored thereon the digital twin part assembling method program which, when executed by a processor, realizes the steps of the digital twin part assembling method as described above.
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 does not need to be downloaded and stored from a third-party tool, the assembly body is obtained without installing specific software, the assembly body is assembled in a browser interface, and the installation 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 assembling method of the present invention;
FIG. 3 is a schematic view of the construction of a first part model and a second part model of the present invention;
FIG. 4 is a schematic view of the assembly of a first part model and a second part model of the present invention;
fig. 5 is a schematic structural view of the assembly of the present invention.
The implementation, functional features and advantages of the present invention will be described with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention provides a terminal, and referring to fig. 1, fig. 1 is a schematic structural diagram of a hardware operating environment according to an embodiment of the invention.
It should be noted that fig. 1 is a schematic structural diagram of a hardware operating environment of the terminal. The terminal according to the embodiment of the present invention may include hardware devices such as a PC (Personal Computer), a portable Computer, and a server.
As shown in fig. 1, the terminal includes: a processor 1001, such as a CPU, a memory 1005, a user interface 1003, a network interface 1004, a communication bus 1002. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also 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 non-volatile memory (e.g., a magnetic disk memory). The memory 1005 may alternatively be a storage device separate from the processor 1001.
Optionally, the terminal may further include an RF (Radio Frequency) circuit, a sensor, a WiFi module, and the like.
Those skilled in the art will appreciate that the terminal structure shown in fig. 1 does not constitute a limitation of the terminal, and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 1, a memory 1005, which is a computer storage readable storage medium, may include therein an operation terminal, a network communication module, a user interface module, and a digital twin part assembling program. The operation terminal is a program for managing and controlling hardware and software resources of the terminal and supports the operation of a digital twin part assembling program and other software or programs.
The terminal shown in fig. 1 may be used to provide an installation-free and maintenance-free method for assembling cloud three-dimensional digital twin parts, and the user interface 1003 is mainly used to detect or output various information, such as inputting authentication information and outputting digital twin parts; the network interface 1004 is mainly used for interacting with a background server and communicating; the processor 1001 may be configured to invoke the 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 obtaining an assembly body in the 3D canvas through the fitting of the first anchor point on the first part model and the second anchor point on the second part model.
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 does not need to be downloaded and stored from a third-party tool, the assembly body is obtained without installing specific software, the assembly body is assembled in a browser interface, and the installation and maintenance-free assembly of the digital twin part is realized.
The specific implementation of the mobile terminal of the invention is basically the same as the embodiments of the digital twin part assembling method described below, and the details are not repeated herein.
Based on the above structure, various embodiments of the digital twin part assembling method of the present invention are proposed.
The invention provides a digital twin part assembling method.
Referring to fig. 2, fig. 2 is a schematic flow chart of a first embodiment of the digital twin part assembling method of the present invention.
In the present embodiment, an embodiment of a digital twin part assembly method is provided, it being noted that while a logical order is shown in the flow chart, in some cases the steps shown or described may be performed in an order different than here.
In the present embodiment, the digital twin part assembling method includes:
step 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 the 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 and can also be a part model which is the same as or different from the first part model, the second part model is used as a connecting piece model for explanation, and in the embodiment, reference is made to fig. 3, and fig. 3 shows 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, obtaining an API command input by a user on 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 used for drawing the 3D part assembly body, 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:
step c, analyzing a solid model and a surface model corresponding to the digital twin part model from a 3D model file, wherein the solid model comprises topological 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;
step D, attaching the assembly anchor point 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.
The method comprises the STEPs of firstly analyzing topology, geometry and color information of parts from 3D model files of other CAD data formats (such as STEP formats), namely entity models, wherein common representation methods of the entity models comprise construction entity geometry (CSG) and Boundary Representation (BREP), wherein the BREP representation method comprises topology information and geometry information of points, edges and faces of a geometry body, and is a main representation method of the current CAD system. Topology, geometry, and color information of the part may be parsed from the 3D model file using a commercial or open source 3D geometry kernel (such as, but not limited to parasolid, opencascade, etc.). And calculating shape and appearance information of the part, namely a surface model, wherein the surface model is usually composed of a triangular mesh composed of a plurality of vertexes (the vertexes can contain coordinate information, normal vector, texture, illumination and other information) and a plurality of triangles represented by vertex sequence number indexes, common formats are 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. And rendering the entity model by the surface model, and displaying the entity model on the 3D canvas.
And calculating assembly anchor points which can be used for forming effective assembly relations with other parts by the parts to obtain the assembly anchor point information, wherein the assembly anchor points are points which are attached to the surfaces of the parts and used for forming fixed assembly relations with the connecting pieces, have specific directions and comprise 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 relationship with some specific parts, or can only be assembled from a specific position in a specific manner, the assembly anchor points have different types, the assembly anchor point information contains the corresponding relationship between different assembly anchor points, and a group of assembly anchor points with the corresponding relationship can only realize effective assembly.
And finally, attaching the assembly anchor point to the entity 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 the first anchor point to the first part solid model displayed on the 3D canvas according to the corresponding relation between the first anchor point and the second anchor point in the preset assembly anchor point information to obtain a first part model; and attaching the second anchor point to the second part solid model displayed on the 3D canvas to obtain a second part model.
Effective assembly can be realized only if the anchor points on the first part model and the anchor points of the second part model have corresponding relations, and the first anchor points and the second anchor points with corresponding relations are respectively attached to the first part solid model and the second part solid model to obtain the first part model and the second part model, so that the first part model and the second part model are effectively adapted.
Step S20, obtaining an assembly in the 3D canvas by the fitting of the first anchor point on the first part model and the second anchor point on the second part model.
The first part model is connected with the second part model through the attachment of anchor points, the anchor points arranged on the first part model are first anchor points, the anchor points arranged on the second part model are second anchor points, the first anchor points and the second anchor points are different in display structure, and the attachment can be realized only when the first anchor points and the second anchor points have corresponding relations. When the first anchor point on the first part model and the second anchor point on the second part model are jointed, the assembly body can be formed. Fig. 4 is a schematic structural view of a first anchor point on a first part model and a second anchor point on a second part model (a connector model) formed by fitting, and fig. 5 is a schematic structural view of an assembly body formed by connecting a plurality of first part models by connector models and a schematic structural view of a table frame assembly body.
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
And g, fitting the first anchor point on the first part model to the second anchor point on the second part model to obtain an assembly body.
In the assembly mode, a user defines an assembly relation between any first part model and any second part model by selecting an assembly anchor point, one first anchor point is selected from the first part model, the second anchor point is selected from the second part model, the two anchor points are assembled together in a surface fitting mode, and the assembly relation is stored in an assembly design in the form of an assembly element. An assembly design thus comprises several parts and several assembly elements. After two anchor points needing to be attached are sequentially clicked, the first part model and the second part model can be assembled together in an anchor point attaching mode. The user can assemble a UI interface to see if an anchor point 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 selects the second anchor point first, 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 also provided on the 3D canvas, so that a user can remove the assembly relation between the two models.
In some embodiments, after the first anchor point and the second anchor point are attached, 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 condition that the assembly relation cannot be uniquely determined, adjusting the relative position of the first anchor point and the second anchor point after the first anchor point and the second anchor point are attached in a rotating or overturning mode until the adjustment is in a mode required by a user.
In the embodiment, the digital twin part model is acquired from the cloud part library and 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 does not need to be downloaded and stored from a third-party tool, the assembly body is obtained without installing specific software, the assembly body is assembled in a browser interface, and the installation and maintenance-free assembly of the digital twin part is realized.
A second embodiment of the digital twin part assembly method of the present invention is presented. The digital twin part assembling method further comprises:
and h, acquiring the physical size of the entity model input by a user based on an editing mode, and rendering the entity 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.
In the editing mode, a user inputs a physical size of an entity model in a 3D canvas, and the size of a digital twin part model can be changed, and the input mode may be that a mouse drags a stretch button arranged at both ends of the digital twin part model, or a size value is input.
Specifically, the surface model renders the solid model according to the physical dimensions input by the user, and a digital twin part model with the dimensions being the physical dimensions input by the user is obtained.
It should be noted that, in the editing mode, other operations may also be performed, for example, a 6-dimensional operation button is arranged at the center of the digital twin part model, so that the user can change the x, y, z coordinate information of the model and the rotation posture of the model through mouse dragging.
A third embodiment of the digital twin part assembly method of the present invention is presented. The user is an authorized user, the step of obtaining a digital twin part model from the cloud part library, wherein the digital twin part model comprises a first part model and a second part model, and the method further comprises the following steps:
and step i, when partner invitation information input by the user is received, setting the partner as the authorized user.
It should be noted that only authorized users are allowed to execute the digital twin part assembling method provided by the present embodiment. When an authorized user invites a partner to participate in the assembly of the digital twin part together, partner invitation information is input, the partner invitation information including an ID of the partner. 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 the authority categories of collaborators, wherein the authority categories comprise read-only authority and editable authority.
The embodiment can also set an authorization team and set the authority category for each member in the team.
In addition, an embodiment of the present invention further provides a terminal, where the terminal includes a memory, a processor, and a digital twin part assembling program stored on the memory and executable on the processor, and the digital twin part assembling program, when executed by the processor, implements the steps of the digital twin part assembling method as described above.
Furthermore, an embodiment of the present invention also provides a computer storage medium, on which a digital twin part assembling program is stored, which, when executed by a processor, implements the steps of the digital twin part assembling method as described above.
Note that the computer storage medium may be provided in a terminal-based system.
The specific implementation of the computer-readable storage medium of the present invention is substantially the same as the embodiments of the digital twin part assembling method described above, and will not be described herein again.
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 an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A digital twin part assembling method, characterized by comprising the 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;
and obtaining an assembly body in the 3D canvas through the fitting of the first anchor point on the first part model and the second anchor point on the second part model.
2. The method of assembling a digital twin part according to claim 1, wherein the step of obtaining a digital twin part model in a cloud part library further comprises:
parsing a solid model and a surface model corresponding to the digital twin part model from a 3D model file, wherein the solid model includes topological and geometric information of the digital twin part model, and the surface model is used for rendering the solid model to display the solid model on a 3D canvas;
attaching an assembly anchor to the entity model displayed on the 3D canvas based on preset assembly anchor information to obtain the digital twin part model;
and storing the digital twin part model in a cloud part library.
3. The digital twin part assembling method according to claim 2, wherein the solid model includes a first part solid model and a second part solid model, and the attaching of the assembly anchor to the solid model displayed on the 3D canvas based on the preset assembly anchor information, the obtaining of 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 solid model displayed on the 3D canvas to obtain a second part model.
4. The method of assembling a digital twin part according to claim 2, wherein the step of obtaining a digital twin part model in a cloud part library comprises:
acquiring an API command input by a user on 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.
5. The digital twin part assembly method of claim 3, wherein the step of obtaining an assembly in the 3D canvas by the fitting of a first anchor point on the first part model to a second anchor point on the second part model comprises:
based on an assembly mode, according to an anchor point selection sequence input by a user, attaching a second anchor point on the second part model to a first anchor point on the first part model; or
And fitting the first anchor point on the first part model to the second anchor point on the second part model to obtain the assembly body.
6. The digital twin part assembling method as claimed in claim 1, further comprising:
and after the first anchor point and the second anchor point are attached, changing the relative position of the first anchor point and the second anchor point after the first anchor point and the second anchor point are attached according to a rotation instruction input by a user.
7. The digital twin part assembling method as claimed in claim 2, further comprising:
and acquiring the physical dimension of the solid model input by a user based on an editing mode, and rendering the solid model with the physical dimension through the surface model so as to adjust the dimension of the digital twin part model to the physical dimension.
8. The method of assembling a digital twin part of claim 1, wherein the user is an authorized user, the step of obtaining a digital twin part model in a cloud part library, the digital twin part model comprising a first part model and a second part model further comprising, prior to the step of:
and when the partner invitation information input by the user is received, setting the partner as the authorized user.
9. A terminal, characterized in that it comprises a memory, a processor and a digital twin part assembly program stored on said memory and executable on said processor, said digital twin part assembly program, when executed by said processor, implementing the steps of the digital twin part assembly method according to any one of claims 1 to 8.
10. A computer storage medium, characterized in that the computer storage medium has stored thereon a digital twin part assembling program that, when executed by a processor, implements the steps of the digital twin part assembling method according to any one of claims 1 to 8.
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