CN115114749A - Template, flow and automatic model design method for pipeline system - Google Patents
Template, flow and automatic model design method for pipeline system Download PDFInfo
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Abstract
The invention provides a template, flow and automatic model design method of a pipeline system, which comprises the following steps: respectively designing template models according to different pipeline types in a pipeline system, and respectively generating model libraries; identifying and defining parameters of a template design model, calling or referring the defined parameters in a modeling environment to carry out model characteristic constraint, and constructing a template model of each type of pipe fitting; modifying related parameters based on the template model and the data template file thereof to realize accurate and rapid modification of the design model; and the design model is converted into a general model format through a conversion interface, so that the data exchange and sharing application are met. The template model designed by the invention has high reusability, the model modification is efficient and convenient, the research and development design efficiency is improved, the research and development cost is reduced, a product model library and model databases of some nonstandard parts in a specific industry can be built, and the design and efficiency of a pipeline system are obviously improved.
Description
Technical Field
The invention belongs to the technical field of computer three-dimensional modeling methods, and particularly relates to a templating, flow-process and automatic model design method for a pipeline system.
Background
With the rapid development of advanced manufacturing technologies, automation, digitization and intelligence technologies are crucial in the new generation of intelligent manufacturing process, and have become more and more widely applied in the product manufacturing field. Digital modeling is a key ring of the whole life cycle of product design, production, maintenance and the like.
The development and application of the digital general technology shorten the product research and development period, but for the product design and development stage, the industrial characteristics are outstanding, the specialization is strong, the design change is easy to occur, and the general three-dimensional design software cannot efficiently serve the product design stage of a specific industry. The traditional computer modeling is usually only for a product with a specific model specification, and based on the design requirement or the existing 2D drawing, the modeling is completed by sequentially creating features and adding corresponding constraints. Data or constraint used in modeling has no specific physical meaning, model reusability is poor, when design change occurs, a model needs to be rebuilt or the relation between the model data and the constraint in software is gradually modified, efficiency is low, errors often occur in the modification process, and the design and manufacturing process of the service product cannot be efficiently and accurately performed. Therefore, how to efficiently and accurately create a design model and quickly design a service design requirement change is an urgent problem to be solved in the prior art.
The SolidWorks software of Dasuo corporation has the characteristics of easiness in use and stability due to the powerful three-dimensional modeling design function, the occupation rate of the SolidWorks software in the field of manufacturing industry is the forefront of the world, so that a designer shortens the design time, and the product can be quickly and efficiently pushed to the market.
The pipeline system is widely applied to ships, naval vessels and ocean engineering and has the characteristics of reliability, safety and high efficiency. The straight pipe, the bent pipe, the tee joint, the cross joint, the special pipe and the like in the pipeline system are various in types and quantity, when the model is designed in the pipeline system under construction, the traditional modeling mode is time-consuming and tedious in design and low in development efficiency, and a model library generated by the templated model can be directly selected and called in the design, so that the repeated modeling work is avoided, and the time for establishing research and development is effectively shortened. The three-way pipe interfaces play roles in connecting pipelines with different specifications and shunting and reversing in pipeline transportation, are numerous, and are typical complex cavity parts in a pipeline system. At present, some rapid modeling or design methods have been developed by means of design means and development tools of various colors for different application scenes, which is helpful for improving the design efficiency and shortening the application period.
The Chinese patent No. CN102385658A discloses a three-dimensional parameterization modeling method of a high-speed railway bridge under a virtual reality environment, and utilizes interaction rules among bridge components to accurately establish a three-dimensional parameterization model of the bridge, the model is convenient to edit and modify, the model is placed in a real geographic environment, the effect after pre-operation is achieved, design errors are corrected, and the quality of railway reconnaissance design is improved.
The Chinese patent No. CN107229779B discloses a parametric modeling method for bullet warheads based on UG expression inhibition characteristics, which comprises the steps of regarding each part of a warhead structure as a type of entity characteristics, carrying out structural analysis and classification on the entity characteristics, respectively defining three-dimensional models of the warhead structure as corresponding characteristic groups, establishing corresponding inhibition expressions in UG software, assembling specific entity characteristic models, and realizing the three-dimensional parametric modeling of various types of warhead structures based on the same parametric template.
The Chinese patent No. CN112049837A discloses a hydraulic device digital prototype design method based on parametric modeling technology, a prototype parameter driving framework model is established in Creo, the height of a prototype can be conveniently adjusted, kinematic pairs such as a spherical hinge pair, a revolute pair and a sliding pair of the prototype are parametrically set, and motion states of the mechanism under different working conditions are shown through key parameter driving. The method provides an idea for variability, reusability and parallel design of product models, and greatly improves the production efficiency.
Chinese patent No. CN110083993A discloses a winding transmission line parametric modeling method, which calculates the trajectory of the winding path and the trajectory point section of the trajectory according to the extracted parameters of the biaxial cable, pairs the sections at each trajectory point by the trajectory, then composes the sections into a plurality of entities, connects all the entities to obtain a winding model for one circle, and offsets the z-coordinate of the winding model for a plurality of steps to obtain a complete winding model required. The difficulty of creating a complex transmission line winding model is reduced, and the time of research and development of the transmission line is further reduced.
The Chinese patent No. CN104376152A discloses a parametric modeling and labeling method, which establishes a basic model of a sheet metal bracket, programs structural parameters such as a flanging, a shaft hole and a fixing hole, automatically adjusts the parameters to obtain a sheet metal bracket model, and realizes three-dimensional labeling of the sheet metal bracket model. The parameterization can complete rapid modeling and intelligent labeling, a new model is rapidly generated, a designer is helped to rapidly complete high-quality design work, repeated labor is eliminated, the design drawing difficulty is reduced, meanwhile, the requirements of product serialization and rapid modification are met, the design speed of the product is comprehensively accelerated, and the design quality of the product is greatly improved.
However, the design phase is a key step of the whole life cycle of the product, how to accelerate the cyclic iterative optimization of the design scheme and how to more efficiently and accurately put the product on the market is a key for improving the competitiveness of the product, and the design database is formed by optimizing the design method by virtue of the advantages of the digital technology in the product development, so that the method has important significance for shortening the design research and development time.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a method for modeling, flow-processing and automatic model design of a pipeline system to solve the problems of the background art mentioned above.
In order to solve the technical problems, the invention adopts the technical scheme that: a templating, flow-processing and automatic model design method for a pipeline system comprises the following steps:
s1, respectively designing template models according to different pipeline types in the pipeline system, and respectively generating model libraries;
s2, identifying and defining the parameters of the template design model, calling or quoting the defined parameters in the modeling environment to carry out model feature constraint, constructing a template model of each type of pipe fitting, and generating a data template coupled and associated with the template model features;
s3, modifying related parameters based on the template model and the data template file thereof, and realizing accurate modification of the design model;
and S4, converting the design model into a general model format through a conversion interface, and meeting the requirements of data exchange and sharing application.
Further, in S1, the different types of pipes in the pipe system are specifically tee pipes, four-way pipes, bent pipes, special pipes and straight pipes.
Further, in S2, the parameters of the model design model are identified and defined as expressions or functional relations including parameter components, and the parameters of the design of each type of pipe fitting include the basic geometric parameters and the expressions to be introduced in the modeling.
Further, the parameters of the template design model are obtained through drawing or dimension parameters required to be added in modeling, and the parameters of the template design model comprise basic parameters, characteristic parameters, positioning fit parameters and other parameters related to modeling methods.
Furthermore, if the definitions of overall size, control parameters and contact relation constraints need to be additionally designed in the pipeline system parameter driving, the parameters in the data template are used for driving and adjusting, and the pipeline model can be rapidly changed and adjusted.
Compared with the prior art, the invention has the following advantages:
the template model designed by the invention has high reusability, strong variability and high efficiency and convenience in model modification, improves the research and development design efficiency and reduces the research and development cost, by applying the idea of the method, a product model library and some non-standard component model databases in specific industries can be built, the model selection design requirements of the model during the design of series products are served, the modeling difficulty is reduced, the product research and development efficiency is effectively improved, in the model design of a pipeline system, different types of pipeline template model libraries such as straight pipes, bent pipes, tee pipes, four-way pipes or special pipes can be built, the quick modification and adjustment can be carried out on different types and specifications of pipe fittings, further, a general design family/model library is derived and is embedded into a modeling environment to form a design selection library, and the design and efficiency of the pipeline system are obviously improved.
Drawings
FIG. 1 is an overall flow chart of the present invention;
FIG. 2 is a schematic diagram showing the outer dimensions of a tee in example 2 of the present invention;
FIG. 3 is a schematic diagram of the coupling relationship between the data template and the three-way pipe model in example 2 of the present invention;
FIG. 4 is a three-way pipe template model building process in embodiment 2 of the present invention;
FIG. 5 is a 3 "x 3" -Sch40 tee data template in example 2 of the present invention;
FIG. 6 is a schematic view showing the rapid transition between 3 "x 3" -Sch40 and 6 "x 6" -Sch40 in example 2 of the present invention;
FIG. 7 shows the generation of a three-way pipe model library in example 2 of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
and S1, respectively designing template models according to different pipeline types in the pipeline system, and respectively generating model libraries, wherein the different pipeline types in the pipeline system are specifically a three-way pipe, a four-way pipe, a bent pipe, a special pipe and a straight pipe.
S2, identifying and defining the parameters of the template design model to include an expression or a functional relation formed by the parameters, and for each type of pipe fitting design parameters, including the basic geometric structure dimension parameters and the expression required to be introduced in the modeling;
the template design model parameters are obtained through drawing or dimension parameters needing to be added in modeling, and comprise basic parameters, characteristic parameters, positioning matching parameters and other modeling method related parameters;
calling or referring defined parameters in a modeling environment to carry out model feature constraint, constructing a template model of each type of pipe fitting, and generating a data template associated with template model feature coupling;
s3, modifying related parameters based on the template model and the data template file thereof, and realizing accurate modification of the design model;
and S4, converting the design model into a general model format through a conversion interface, and meeting the requirements of data exchange and sharing application.
If the definition of overall size, control parameters and contact relation constraint needs to be designed additionally in pipeline system parameter driving, and parameter driving adjustment in a data template is used, so that pipeline model rapid transformation and adjustment can be realized.
By means of the characteristics of strong variability and high reusability of the template model, for series parts, such as three-way pipes in a pipeline system, product parameters of different specifications are uniformly defined as C: master tube-to-center distance, M: outlet-to-center distance, t 1: wall thickness, c 1: groove size, a: angle, D1 main tube outer diameter, D2: outlet outer diameter, R: and (3) fillet radius, establishing the template model in S2, adjusting parameters defined by the template model to obtain three-way models with different specifications, then conducting S4, exporting the three-way models as a library model, adjusting parameters of the data template for multiple times, completing quick establishment of a design model library, and realizing sharing of the design model library among mainstream three-dimensional CAD software.
Embodiment 2, the present invention provides a technical solution: a three-way pipe model templating, flow and automatic model designing method comprises the following steps:
firstly, three-way pipe parameter identification and definition are carried out: parameters related to the tee use case are determined according to ASME B16.9 standard and a modeling method, and are specifically shown in figure 2;
including the equal diameter/unequal diameter tee parameters, C: master tube-to-center distance, M: outlet-to-center distance, t 1: wall thickness, c 1: groove size, a: angle, D1 main tube outer diameter, D2: outlet outer diameter, R: a fillet radius;
then, three-way pipe template model establishment is carried out: based on the SolidWorks software and the parameters defined in S1, the identified parameters are predefined in a modeling environment by using an equation tool in the SolidWorks software to serve as a data template, in the modeling process, the defined parameters and expressions are used for building model characteristics, the parameters and the model characteristics are coupled and associated, and the template model building is realized, which is specifically shown in FIG. 3.
The model of the embodiment adopts a curved surface modeling mode, firstly three end surface circular rings and a bottom semi-circular ring are established to serve as a control surface of the overall shape of the three-way pipe model, the size of the three end surface circular rings is restricted in a sketch by using parameters D1 and D2, and the initial position and the height respectively utilize expressions between defined parameters
"D1"/2+ "R" (Ring 1 starting position) "M" - "D1"/2- "R" (Ring 1 height) "D2"/2+ "R" (Ring 2 starting position) "C" - "D2"/2- "R" (Ring 2 height);
the ring 2 height and position definitions are similar to 1, "D2" +2 "R" (half ring 4 length) and are referenced in the "curved stretch" feature, as shown in fig. 4;
on the initial control ring surface, the fillet transition connection part of the branch pipe and the main pipe is completed in a curved surface filling mode to form a curved surface model; and then, parameters such as the wall thickness "t1", the groove size "c 1" and the groove angle "a" are coupled and associated with the model characteristics, the rest characteristics of the model are perfected, and the establishment of the template model is realized, as shown in fig. 4.
After the template model is built, a data template related to the template model is derived, wherein the data template comprises defined parameters and a parameter expression or a function relation which is related to the model characteristics in the modeling process, and is shown in FIG. 5;
rebuilding a three-way pipe model by one key: for the original model established in S2, when the design requirement changes and the three-way pipe size structure changes, it is not necessary to modify each size parameter of the original model in the SolidWorks software, and the model can be rapidly modified only by modifying the corresponding parameter value in the parameter data template, as shown in fig. 6;
for the actual conversion effect, the parameters "M" ═ 86, "C" ═ 86, "D1" ═ 88.9, "D2" ═ 88.9, "t1" ═ 3.05 "in the three-way pipe template model 3" x3 "-Sch 40 data template are adjusted to be the values corresponding to" M "═ 143," C "═ 143," D1"═ 168.3," D2"═ 168.3," t1"═ 7.11,", so that the rapid conversion of the two specification models can be completed;
finally, the changed model can be output to a general model format by utilizing SolidWorks software, S3 and S4 are repeated on the basis of the template model, a model library for type selection design can be generated by setting different parameters, as shown in FIG. 7, and sharing and application among mainstream three-dimensional CAD software such as SolidWorks \ NX (UG) and Creo (Pro-E) are realized.
The template model designed by the design method has high reusability, strong variability and high efficiency and convenience in model modification, the research and development design efficiency is improved, the research and development cost is reduced, by applying the thought of the method, a product model library and some model databases of non-standard parts in a specific industry can be built, the model selection design requirements of the model during the design of series products are met, the modeling difficulty is reduced, the product research and development efficiency is effectively improved, in the model design of a pipeline system, pipeline template model libraries of different types such as straight pipes, bent pipes, tee pipes, four-way pipes or special-shaped pipes can be built, the pipe templates of different types and specifications can be quickly modified and adjusted, further, a general design family/model library is derived and is embedded into a modeling environment to form a design selection library, and the design and efficiency improvement of the pipeline system is remarkable.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, 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.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A templating, flow-processing and automatic model design method for a pipeline system is characterized by comprising the following steps: .
S1, respectively designing template models according to different pipeline types in the pipeline system, and respectively generating model libraries;
s2, identifying and defining the parameters of the template design model, calling or quoting the defined parameters in the modeling environment to carry out model feature constraint, constructing a template model of each type of pipe fitting, and generating a data template coupled and associated with the template model features;
s3, modifying related parameters based on the template model and the data template file thereof, and realizing accurate and rapid modification of the design model;
and S4, converting the design model into a general model format through a conversion interface, and meeting the requirements of data exchange and sharing application.
2. The method for modeling, flow and automation of pipeline system as claimed in claim 1, wherein the different pipeline types in the pipeline system are tee, cross, bend, profile and straight in S1.
3. The templating, flow-processing and automation model design method for piping system according to claim 1, wherein in S2, the template design model parameters are identified and defined as an expression or a functional relationship including parameter components, and for each type of pipe design parameters, the basic geometric dimension parameters and the expression to be introduced in the modeling are included.
4. The templating, flow-processing and automated model designing method for piping systems according to claim 3, wherein the template design model parameters are obtained from drawing or dimensional parameters to be added in modeling, and the template design model parameters include basic parameters, characteristic parameters and positioning fit parameters.
5. The method of claim 1, wherein the pipeline system parameter driver is configured to use parameters in the data template to drive the adjustment, so as to achieve rapid transformation and adjustment of the pipeline model if additional design of overall dimension, control parameters and contact relation constraint is required.
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