WO2019037720A1 - 汽车覆盖件模具智能设计系统及设计方法 - Google Patents

汽车覆盖件模具智能设计系统及设计方法 Download PDF

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WO2019037720A1
WO2019037720A1 PCT/CN2018/101571 CN2018101571W WO2019037720A1 WO 2019037720 A1 WO2019037720 A1 WO 2019037720A1 CN 2018101571 W CN2018101571 W CN 2018101571W WO 2019037720 A1 WO2019037720 A1 WO 2019037720A1
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design
mold
product
elements
information
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PCT/CN2018/101571
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English (en)
French (fr)
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陈嘉林
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重庆创速工业有限公司
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/10—Geometric CAD
    • G06F30/15—Vehicle, aircraft or watercraft design
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/10—Geometric CAD
    • G06F30/17—Mechanical parametric or variational design

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  • the application belongs to the field of mold design, and particularly relates to an intelligent design system and design method for a car cover mold.
  • the total market of China's mold industry in 2014 was about 250 billion yuan, including about 80 billion yuan in automotive molds and more than 30 billion yuan in stamping dies.
  • the domestic market size of automotive panel molds in automotive molds is approximately 2.2 billion yuan (according to the new model of 100 million/model, and the redesigned model of 25 million/model). China only accounts for about 25% of the global market.
  • the output value of molds per model abroad is higher than that of domestic ones.
  • the global production value of automotive-only parts is expected to exceed 100 billion yuan.
  • the present application provides an intelligent design system for an automobile cover mold.
  • An intelligent design system for a car cover mold provided by the present application includes:
  • a product selection module configured to input product type information of the automobile cover product of the mold to be designed
  • the DL process diagram analysis module is configured to receive the DL process map input by the user, and analyze the DL process map to obtain the process categories and the sequence between the processes, thereby obtaining corresponding general design elements and special design elements. And arranging the combination thereof; the DL process diagram analysis module is further configured to analyze the input DL process map and the product classification information to obtain information corresponding to the product of the mold to be designed, the information includes: a product Classification information, product geometry information, process categories and combinations, production parameter information, and production equipment parameters;
  • the intelligent conversion module is configured to separate and decompose design elements and product information, so that all the above design elements and product information are relatively independent, and the decomposed design elements and product information are digitized to each design. Elements and each product information are converted to values or strings;
  • the intelligent estimation module includes a logic rule unit and a mathematical model unit, and is configured to perform processing on the decomposed numerical design elements and product information in combination with the logic rule and the mathematical model to obtain a plurality of characteristic parameter values, the feature parameter values being at least Including the position, length, width, height, number of holes, diameter of through holes, curvature, positional relationship and interference relationship with other products, and various logical expressions and mathematical relationships derived from profile and contour geometry ;
  • the virtual model module includes a smart object generation module, a logic rule unit, and a mathematical model unit
  • the smart object generation module includes a logic rule unit and a mathematical model unit
  • the logic rule unit stores a plurality of logic rules
  • the model unit stores a plurality of mathematical models
  • the smart object generation module is configured to generate a plurality of basic shapes and parts according to a plurality of logic rules stored in the logic rule unit and a plurality of mathematical models stored in the mathematical model unit, and are further configured to generate a plurality of The basic shape and the positional relationship and interference relationship between the parts;
  • a mold model conversion module configured to: according to a plurality of parameter values obtained by the smart estimation module, a plurality of basic shapes, parts, and positional relationships and interference relationships between the plurality of basic shapes and parts obtained by the virtual model generation module a three-dimensional design drawing of a mold for obtaining an automobile cover of a mold to be designed;
  • a two-dimensional engineering drawing conversion module configured to generate a corresponding two-dimensional mold assembly drawing according to the obtained three-dimensional design drawing of the automobile cover mold
  • the mold part list generation module is configured to generate a corresponding mold part configuration list according to the obtained three-dimensional design drawing of the automobile cover mold.
  • the product category information of the automobile cover product includes the following three levels of classification: product level classification, process level classification, and mold structure level classification; wherein the product level classification includes at least the following categories: front door Board, front door inner panel, front floor type, top cover type, side wall type, rear side inner panel, rear door outer panel, rear door inner panel, back door outer panel, back door inner panel, rear Flooring, fenders, dash panels, front hood inner panels and front hood outer panels; the classification of the process level includes at least the following categories: blanking process, chamfering process, drawing process, secondary Drawing process or multiple drawing process, upper forming process, lower forming process, trimming process, punching process, punching hole process, breaking process, upper flange process, lower flange process, upper shaping process, lower shaping Process, upturning process, downturning process, imprinting process, edge-finishing process, side-cutting process, side punching process, side punching process, side turn hole process, side flanging process and side shaping process; Mold structure level Class includes at least the following categories
  • the design element comprises a basic design element and a derivative design element
  • the basic design element includes at least a profile and a contour of the part
  • the derivative design element includes at least: the definition needs to be disassembled according to the profile and the size of the product. How many inserts are divided; according to the size of the product parts, define how many guiding elements are needed; according to the profile, contour size and material thickness of the product, define how much pressing force is needed and define how many pressure elements are needed.
  • the design element further includes a universal design element and a special design element corresponding to the process, wherein each process includes a universal design element and a special design element, and the universal design element refers to a design element included in each process.
  • the specific design elements refer to the unique design elements corresponding to the process.
  • the logic rule unit stores a plurality of logic rules, where the logic rules include design logic rules and mathematical logic rules used in the mold design, and the design logic rules used in the mold design include material selection rules and strengths.
  • Design rules and minimum design principles which are correspondences between logic rules and values employed in mold design, the logic rules being converted into logical expressions, the logical expressions including: true and false functions , AND or NOT function and greater than or equal to the function.
  • the mathematical model unit stores a plurality of mathematical models, the mathematical model including a plurality of topological mathematical models f(x), which are between the structure and the characteristic parameters of each part in the three-dimensional mold Establishing an associated topology mathematical coordinate transformation function relationship, the feature parameters including at least the position, length, width, height, number of holes, diameter of the through hole, curvature, positional relationship and interference relationship with other parts, and Various types of logical expressions and mathematical relations derived from profile and contour geometry objects.
  • the application also provides an intelligent design method for a car cover mold, comprising:
  • the input DL process map is analyzed to analyze the design elements and obtain the design elements of the DL process map;
  • the information includes at least: product classification information, product geometric information, process category, process quantity, production information parameter, and production equipment information. ;
  • the decomposed design elements and product information are digitized, that is, each design element and each product information is converted into a numerical value and/or a string;
  • the decomposed numerical design elements and product information are processed to obtain a plurality of characteristic parameter values, and the characteristic parameter values include at least the position, length, width, height, and number of punched holes of each product.
  • the characteristic parameter values include at least the position, length, width, height, and number of punched holes of each product.
  • a corresponding two-dimensional mold assembly drawing and a mold part configuration list are generated according to the obtained three-dimensional design drawing of the mold of the automobile cover.
  • the product category information of the automobile cover product includes the following three levels of classification: product level classification, process level classification, and mold structure level classification; wherein the product level classification includes at least the following categories: front door Board, front door inner panel, front floor type, top cover type, side wall type, rear side inner panel, rear door outer panel, rear door inner panel, back door outer panel, back door inner panel, rear Flooring, fenders, dash panels, front hood inner panels and front hood outer panels; the classification of the process level includes at least the following categories: blanking process, chamfering process, drawing process, secondary Drawing process or multiple drawing process, upper forming process, lower forming process, trimming process, punching process, punching hole process, breaking process, upper flange process, lower flange process, upper shaping process, lower shaping Process, upturning process, downturning process, imprinting process, edge-finishing process, side-cutting process, side punching process, side punching process, side turn hole process, side flanging process and side shaping process; Mold structure level Class includes at least the following categories
  • the design element comprises a basic design element and a derivative design element
  • the basic design element includes at least a profile and a contour of the part
  • the derivative design element includes at least: the definition needs to be disassembled according to the profile and the size of the product.
  • the design elements also include A general design element and a specific design element corresponding to the process, wherein each process includes a general design element and a special design element, the common design element refers to a design element included in each process, and the specific design element refers to the process corresponding to The unique design elements; through the analysis of the DL process diagram, to obtain the process categories and the sequence between the processes, to obtain the corresponding general design elements and special design elements, and to arrange them in combination.
  • the logic rule includes design logic rules and mathematical logic rules used in mold design, and the design logic rules used in the mold design include material selection rules, strength design rules, and minimum design principles, and the mathematical logic rules
  • the logical rule is converted into a logical expression, which is: a true or false function, an AND or a function, and a function greater than or equal to a function;
  • the mathematical model includes a number of topological mathematical models f(x), which are associated topological mathematical coordinate transformation function relationships established between the structure and the characteristic parameters of each part in the three-dimensional mold.
  • the characteristic parameters include at least the position, length, width, height, number of holes, diameter of the through hole, curvature, positional relationship and interference relationship with other parts, and various logical expressions and mathematics derived from the geometric objects of the profile and contour. Relationship.
  • FIG. 1 is a block diagram of a preferred embodiment of an automotive panel mold intelligent design system as described herein.
  • FIG. 2 is a schematic view of the process of the intelligent design system of the automobile cover mold of FIG.
  • FIG. 3 is a flow chart of a preferred embodiment of an intelligent design method for a car cover mold according to the present application.
  • FIG. 1 is a block diagram of a preferred embodiment of an automotive panel mold intelligent design system according to the present application.
  • the preferred embodiment of the automobile panel mold intelligent design system comprises a product selection module 1, a DL process diagram analysis module 2, an intelligent conversion module 3, an intelligent estimation module 5, a virtual model module 6, a mold model conversion module 7, and a two-dimensional
  • Figure 2 is a schematic diagram of the process of the intelligent design system of the automobile cover mould in Figure 1. The working principle of the automotive panel mold intelligent design system described in the present application will be described with reference to FIG. 1 and FIG. 2 .
  • the product selection module 1 is configured to input product category information through a human machine interface. Specifically, in the present application, the product selection module 1 is configured to input classification information of an automobile cover product of a mold to be designed. More specifically, the automobile cover mold intelligent design system described in the present application is provided with an explosion diagram of the cover of the entire automobile, and the user can directly select the corresponding product category by selecting the corresponding product component on the explosion map. information.
  • the product classification includes the following three levels of classification: product level classification, process level classification, and mold structure level classification.
  • the entire automobile cover member includes at least the following categories: a right front door outer lower plate, a right front door inner panel, a right front floor, a top cover, a right side circumference, a right rear side inner panel, and a right rear door.
  • the above products can be divided into the following categories (examples): front door outer panel, front door inner panel, front floor, top cover, side wall, rear side inner panel, rear door Board, back door inner board, back door outer board, back door inner board, rear floor type, fender board, front panel, front cover inner panel and front cover outer panel.
  • the product classification information includes the above product categories. Of course, in other embodiments, the position of the product on the vehicle body, the product material, the stamping process, the mold structure, and the like may be classified. For similar parts, the combination of logical rules is similar.
  • the process category includes at least: blanking process, chamfering process, drawing process, secondary drawing process or multiple drawing process, upper forming process, lower forming process, Trimming process, punching process, punching hole process, breaking process, upper flanging process, lower flanging process, upper shaping process, lower shaping process, upturning hole process, lower turn hole process, imprint process, edge fitting Process, side trimming process, side punching process, side punching and boring process, side turn hole process, side flanging process and side shaping process.
  • each category of product corresponds to a different number of processes.
  • the mold of a door inner panel is usually four sets (that is, the processing of the product is completed by four combined processes), and each time corresponding to the inner panel of the different models, the specific process will have certain changes.
  • the inner panel of the A model door, the second process is trimming + punching
  • the inner panel of the B model door, the second process is trimming + punching + side trimming.
  • the process category and process quantity are based on mold design rules and can be tailored to the designer's experience.
  • the mold structure level for the automobile cover, it at least includes: a guiding structure, a frame structure, a working structure, a moving mechanism, a pressure source, a standard component and a custom component, and the whole vehicle may be different due to different products and processes. And different variations in user standards.
  • the intelligent design system for the automobile panel mold adopts a classification method to classify the same and different parts caused by different elements, and at the same time, the corresponding design logic elements are refined to a fine degree to form a plurality of design logics. Entry (ie the logical rules described below).
  • the DL process map analysis module 2 analyzes the DL process map.
  • the DL process map is obtained by performing stamping process design and CAE analysis on the product design drawing.
  • the DL process diagram includes the process categories of the product, including: drawing, trimming, punching, flanging, and shaping.
  • the process category is a logic rule in the mold design, which is not discussed in detail herein.
  • the DL process map analysis module 2 is configured to receive a DL process map input by a user, and analyze the received DL process map to analyze a design element of the DL process map to obtain a design element of the DL process map.
  • the design element includes a basic design element and a derivative design element, and the basic design element includes at least a profile and a contour of the part.
  • the basic design element is explicit, that is, it can be visually recognized by the user, and when the user intuitively recognizes the basic design element, the automobile cover mold intelligent design system can be input through the product selection module 1.
  • the derivative design element includes at least: defining how many inserts need to be split according to the profile and the size of the product; and defining how many guiding elements are required according to the size of the product parts; according to the profile, the outline size and the material thickness of the product, Define how much press force is needed and define how many pressure components are needed.
  • the design elements also include general design elements and special design elements corresponding to the processes, wherein each process includes a universal design element and a special design element, which refers to the design elements included in each process.
  • the universal design element may be a basic design element or a derivative design element, for example, the pre-process profile process includes only one basic general design element, and the guide plate specification and positioning process include A set of derived design elements.
  • the specific design element refers to a unique design element corresponding to the process.
  • the special design element may include a basic design element, and may also include a derivative design element, such as a basic dedicated element included in the trimming process.
  • the trimming process includes a set of derivative design elements.
  • the DL process diagram analysis module 2 is configured to analyze the DL process map to obtain the process categories and the sequence between the processes, and obtain corresponding general design elements and special design elements, and combine them. Arrange. In this embodiment, the DL process diagram analysis module 2 performs operations on the DL process map through logic rules and mathematical model functions to obtain its design elements, and also manually inputs basic design elements by the user.
  • the DL process map analysis module 2 is further configured to analyze the input DL process map and product classification information to obtain information corresponding to the product of the mold to be designed.
  • the information includes: product classification information, product geometric information, process categories and combinations, production parameter information (including at least: automatic production lines and manual production lines, etc.) and production equipment parameters.
  • the target parts are roof covers
  • the processes are trimming, punching and side shaping.
  • the intelligent design system of the automobile cover mould described in the present application calls the general rule combination of the automobile cover, the special rule combination of the roof cover, the combination of the trimming rules, and the punching
  • the combination of rule combination and side shaping rules, and each combination contains a number of component combination rules that need to be generated.
  • the intelligent conversion module 3 is configured to separate and decompose the design elements and product information analyzed by the DL process map analysis module 2 to make all of the above design elements and product information relatively independent. At the same time, the intelligent conversion module 3 is further configured to digitize the decomposed design elements and product information, that is, each design element and each product information is converted into a numerical value or a character string.
  • the intelligent estimating module 5 includes a logic rule unit 50 and a mathematical model unit 51 configured to perform arithmetic processing on the decomposed numerical design elements and product information in combination with logic rules and mathematical models to obtain a plurality of feature parameter values.
  • the characteristic parameters include at least the position, length, width, height, number of holes, diameter of the through hole, curvature, positional relationship with other parts, interference relationship, and the like, and also include geometric objects derived from profiles and contours.
  • Various logical expressions and mathematical relationships include at least the position, length, width, height, number of holes, diameter of the through hole, curvature, positional relationship with other parts, interference relationship, and the like, and also include geometric objects derived from profiles and contours.
  • the logic rule unit 50 stores a plurality of logic rules.
  • the logic rule includes a logic rule and a mathematical logic rule used in the mold design, and the logic rule used in the mold design includes Such as material selection rules, strength design rules and minimum design principles, etc.
  • the mathematical logic rules are the correspondence between the logic rules and values used in the design of the mold.
  • the logic rule is converted into a logical expression, and the logical expression includes: a true-false function, a NAND function, and a greater than or equal to a function.
  • the logical expression is to construct a mathematical model f(x) together with a set of group parameters, and then compile and modulate the program to perform behavior calculation and parameter calculation.
  • the calculated behavior and parameters are configured to construct a smart object, a virtual model (virtual model). It is composed of several smart objects and calculated behaviors and parameters.
  • the mathematical model unit 51 stores a plurality of mathematical models.
  • the mathematical model includes a plurality of topological mathematical models f(x), which are based on various automobile cover production standards. , automotive cover mold design technical specifications and mold design expert experience, summed up and summarized the logical rules of automotive cover mold design and digital.
  • the topological relationship (size, shape and position) of each part is mapped by the characteristic parameters of each part in the three-dimensional mold, that is, the associated topological mathematical coordinate transformation f(x) function is established between the structure and the characteristic parameters of each part of the three-dimensional mold.
  • the relationship parameter includes at least a position, a length, a width, a height, a number of holes, a diameter of a through hole, a curvature, a positional relationship with other parts, and an interference relationship, and is derived from a geometric object such as a profile and a contour.
  • a geometric object such as a profile and a contour.
  • the virtual model module 6 includes a smart object generation module 60, a logic rule unit 61, and a mathematical model unit 62.
  • the smart object generation module 60 includes a logic rule unit 63 and a mathematical model unit 65.
  • the logic rule unit 63 stores a plurality of logic rules.
  • the logic rules include logic rules and mathematical logic rules used in mold design, and logic rules and mathematical logic rules used in the mold design. The same as described above, and will not be described again here.
  • the mathematical model unit 65 stores a plurality of mathematical models.
  • the mathematical model includes a plurality of topological mathematical models f(x), and the specific form thereof is the same as that described above, and details are not described herein again.
  • the smart object generation module 60 is configured to generate a plurality of basic shapes and components. Specifically, the smart object generation module 60 is configured to generate a plurality of basic shapes and parts according to a plurality of logic rules stored in the logic rule unit 63 and a plurality of mathematical models stored in the mathematical model unit 62, and is further configured to generate a plurality of basic shapes. And the positional relationship and interference relationship between the parts.
  • the mold model conversion module 7 is configured to determine a number of basic shapes, parts, and positions between the plurality of basic shapes and parts obtained by the virtual model generation module 6 according to a plurality of parameter values obtained by the intelligent estimation module 5 The relationship and interference relationship are obtained from the three-dimensional design of the new car cover mould.
  • the two-dimensional engineering drawing conversion module 8 is configured to automatically generate a corresponding two-dimensional mold assembly engineering drawing according to the obtained three-dimensional design drawing of the automobile cover mold.
  • the mold part list generation module 9 is configured to automatically generate a corresponding mold part configuration list according to the obtained three-dimensional design drawing of the automobile cover mold, thereby avoiding manual recording of the part configuration list and manual conversion of the two-dimensional mold assembly drawing.
  • the intelligent design system for the automobile cover mould includes at least three design languages: a topological mathematical model f(x), a development computer language for design software (this embodiment adopts CATIA design software, and the corresponding computer language is CAA) And the underlying development computer language (the present embodiment adopts the C++ language), wherein the topological mathematical model f(x) is configured to establish an associated topological mathematical coordinate transformation function relationship between the structure and the characteristic parameters of each part of the three-dimensional mold
  • the underlying development computer language is configured to compile the constructed mathematical model f(x) to convert all of it into a programming language, the development computer language of the design software being configured to re-develop the design software to enable The entire automotive panel mold intelligent design system seamlessly interfaces with the design software.
  • the intelligent design system of the automobile cover part mold establishes a mathematical model f(x) function relationship set, and uses the CAA language and the computer C++ language which are developed by the CATIA design system to establish a mathematical model f(x) function relationship set.
  • the computer secondary development connection is carried out to obtain the intelligent design system of the automobile cover mould.
  • the CATIA design software is taken as an example for description.
  • other implementation manners may also use other design software, such as UG/NX and SolidWorks, etc., and only need to do the corresponding secondary development to be described in the present application.
  • the automotive panel mold intelligent design system is connected with the design software.
  • logical expressions and mathematical function formulas are established according to the logic rules of the mold design to construct the mathematical model f(x), and then the constructed mathematical model f(x) is constructed by using the underlying development computer language (C++).
  • C++ development computer language
  • Compile convert all of them into a programming language, and then re-develop the design software through the development computer language of the design software, so that the entire automotive cover mold intelligent design system and the design software seamlessly interface.
  • the purpose of secondary development of the design software by using the development computer language of the design software is to convert the output of the engine part of the mold design system into a visible three-dimensional model, a two-dimensional drawing, a BOM, etc. through design software. .
  • the intelligent design system of the automobile cover mould first selects the process category, the number of processes, the product classification information, the production parameter information and the production equipment information of the product according to the production requirements, and then calculates the three-dimensional mold through the built-in logic rules and mathematical models.
  • the characteristic parameter of one or more parts, and correspondingly changing the f(x) function relationship set, that is, when the coordinates of any one part structure and characteristic parameter change, other parts are calculated by the mathematical model according to the logical relationship of the mold, automatically Generate a corresponding matching three-dimensional size structure and features, that is, any change in one of the characteristic parameters will cause the effect of touching the whole body, and then generate a three-dimensional target mold from the changed f(x) function relationship set: that is, the desired new 3D design of the car cover mould.
  • the f(x) function relationship set assuming that the die length of a mold is a, the length of the middle mold is b, and the length of the upper mold is c, the lower mold is established according to the logic rules of the mold design.
  • the functional relationship f(x) between the length a and the middle die length b, the functional relationship f(x) between the lower die length a and the upper die length c, and the functional relationship between the middle die length b and the lower die length c f(x) it is also possible to establish a functional relationship between the dimensions of the parts on the lower mold and the dimensions of the lower, middle and upper molds, the dimensions of the parts on the middle mold, and the lower and middle modes.
  • the functional relationship f(x) between the dimensions of the upper die, the relationship between the dimensions of the parts on the upper die and the dimensions of the lower die, the middle die and the upper die, f(x), and the surface curvature of the parts on the upper die A functional relationship f(x) with the dimensions of the lower mold, the middle mold, and the upper mold.
  • the other parts in the whole set of molds will be calculated by mathematical model according to the above functional relationship, and the corresponding matching 3D will be automatically generated.
  • the functional relationship f(x) may also include true and false logical relationships between parts, such as when the size of a part exceeds a certain value, the mold will correspondingly reduce another part.
  • the designer does not need to do any three-dimensional component modeling and projection two-dimensional engineering drawing, but only through the man-machine dialogue interface, adjusting the logical relationship parameters of the automobile cover part mold, Quickly and automatically generate 3D parts modeling and 2D parts drawing and parts material list of the mold.
  • the entire mold design takes only 1 or 2 hours, and the design accuracy is greatly improved.
  • This technology will indicate that the future mold design is to complete the overall mold design intelligence through mathematical model calculation, instead of combining the mold by establishing a large parts database, because our overall mold design concept and technology are very different from the current mold design status. Especially in the field of automotive panels, this technology will indicate a huge change in the field of automotive panel mold design in the next few years.
  • the automotive panel mold intelligent design system described in the present application analyzes the input DL process map to know the product type information, process information and design elements contained in the DL process map, and will obtain Product type information, process information, and design elements are combined with f(x) function relationship sets and logic rules to obtain a number of numerical parameters that are input to, for example, CATIA design software to obtain the desired design.
  • the three-dimensional design drawing of the automobile cover mold, and then the two-dimensional mold assembly engineering drawing and the mold part configuration list are obtained according to the obtained three-dimensional design drawing.
  • FIG. 3 is a flowchart of a preferred embodiment of a method for designing a car cover mold according to the present application.
  • the preferred embodiment of the method for designing an automobile cover mold includes:
  • Step S1 input classification information and design elements of the automobile cover product corresponding to the mold to be designed.
  • Step S2 analyzing the input DL process diagram to analyze the design elements and obtain the design elements of the DL process diagram.
  • Step S3 combining the input product classification information and the DL process map to obtain information corresponding to the product of the mold to be designed, the information including at least: product classification information, product geometric information, process category, process quantity, production information parameter and Production equipment information.
  • Step S4 Separating and decomposing the design elements and product information obtained by the analysis, so that all the above design elements and product information are relatively independent.
  • Step S5 The decomposed design elements and product information are digitized, that is, each design element and each product information is converted into a numerical value and/or a string.
  • Step S6 Combining the logic rule and the mathematical model to perform arithmetic processing on the decomposed numerical design element and product information to obtain a plurality of parameter values.
  • Step S7 Combine the logic rule and the mathematical model to generate a plurality of basic shapes, and generate a positional relationship and an interference relationship between the plurality of basic shapes.
  • Step S8 obtaining a three-dimensional design drawing of the new automobile cover mold according to the obtained plurality of parameter values, the plurality of basic shapes, and the positional relationship and the interference relationship between the plurality of basic shapes.
  • Step S9 automatically generating a corresponding two-dimensional mold assembly engineering drawing and a mold part configuration list according to the obtained three-dimensional design drawing of the automobile cover mold.

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Abstract

一种汽车覆盖件模具智能设计系统，包括：产品选择模块（1）、DL工艺图分析模块（2）、智能转换模块（3）、智能推算模块（5）、虚拟模型模块（6）、模具模型转换模块（7）、二维工程图转换模块（8）和模具零件明细表生成模块（9）。还提供了一种汽车覆盖件模具智能设计方法，该方法已经在实际工作中实施完，并开始应用。上述汽车覆盖件模具智能设计系统及方法按照分类拓扑规则对模具的各个设计元素进行分类，不需要人工做3D模具模型，所有结果由计算生成，方便快捷，在实际应用中取得了较好的效果。

Description

汽车覆盖件模具智能设计系统及设计方法
相关申请的交叉引用
本申请要求于2017年08月22日提交中国专利局的申请号为201710721651.3、名称为“汽车覆盖件模具智能设计系统及设计方法”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请属于一种模具设计领域，特别涉及一种汽车覆盖件模具智能设计系统及设计方法。
背景技术
据不完全统计，2014年我国模具行业的市场总额大概为约2500亿元，其中汽车模具约800多亿元，冲压模具300多亿元。汽车模具中的汽车覆盖件模具的国内市场规模保守计算约220多亿元(按新车型1亿/车型，改款车型0.25亿/车型)。而中国仅占全球市场约25％，国外每车型的模具产值高于国内，2017年全球仅汽车覆盖件模具产值预计超1000亿元。
现在通用技术设计一套中等难度的模具(三维零部件模型、二维零部件工程图和零件材料清单)大概需要15天以上，设计人员通常是用CAD软件先做三维零部件造型，再装配成三维模具模型，投影二维工程图并做各种标注，再制作模具零件材料清单。个别设计人员会做一些零部件的参数化，或做一些零部件模板库来提取零件组合，如此可以提高一些设计速度。但目前全世界的模具设计领域里，还没有出现整套模具完全不用人工设计三维模型和投影二维工程图，就能快速完成模具的整体设计的智能化技术。
传统的模具设计周期长，重复工作多，设计质量受限于外在因素，而且每次都要由不同或相同的设计师，进行若干重复工作，知识难以积累和沉淀。
发明内容
针对现有技术中存在的技术问题，本申请提供一种汽车覆盖件模具智能设计系统。
本申请所提供的一种汽车覆盖件模具智能设计系统，包括：
产品选择模块，配置成输入待设计模具的汽车覆盖件产品的产品种类信息；
DL工艺图分析模块，配置成接收用户输入的DL工艺图，并对DL工艺图进行分析，以得到其所包含的工序类别及工序之间的顺序，进而得到对应的通用设计元素及专用设计元素，并对其进行组合排布；所述DL工艺图分析模块还配置成对输入的DL工艺图及产品分类信息进行分析，以得到待设计模具的产品所对应的信息，所述信息包括：产品分类信息、产品几何信息、工序类别及组合、生产参数信息及生产设备参数；
智能转换模块，配置成将设计元素及产品信息进行分离分解，以将上述所有设计元素 及产品信息全部变为相对独立，并将分解后的设计元素及产品信息进行数值化，以将每一个设计元素及每一个产品信息均转换为数值或字符串；
智能推算模块，包括逻辑规则单元及数学模型单元，配置成结合逻辑规则及数学模型对分解后的数值化的设计元素及产品信息进行运算处理，以得到若干特征参数值，所述特征参数值至少包括各产品的位置、长、宽、高、打孔数、通孔直径、曲率、与其他产品的位置关系和干涉关系以及经由型面和轮廓几何对象衍生的各类逻辑表达式及数学关系式；
虚拟模型模块，包括智能对象生成模组、逻辑规则单元及数学模型单元，所述智能对象生成模组包括逻辑规则单元及数学模型单元，所述逻辑规则单元内存储有若干逻辑规则，所述数学模型单元内存储有若干数学模型，所述智能对象生成模组配置成根据逻辑规则单元内存储的若干逻辑规则及数学模型单元内存储的若干数学模型生成若干基础形状及零件，还配置成生成若干基础形状及零件之间的位置关系及干涉关系；
模具模型转换模块，配置成根据由所述智能推算模块得到的若干参数值、由所述虚拟模型生成模块所得到的若干基础形状、零件及该若干基础形状和零件之间的位置关系及干涉关系得到待设计模具的汽车覆盖件的模具的三维设计图；
二维工程图转换模块，配置成根据所得到的汽车覆盖件模具的三维设计图生成对应的二维模具装配件工程图；以及
模具零件明细表生成模块，配置成根据所得到的汽车覆盖件模具的三维设计图生成对应的模具零件配置清单。
其中，所述汽车覆盖件产品的产品种类信息包括以下三个层面的分类：产品层面的分类、工艺层面的分类以及模具结构层面的分类；其中所述产品层面的分类至少包括以下类别：前门外板类、前门内板类、前地板类、顶盖类、侧围类、后侧围内板类、后门外板类、后门内板类、背门外板类、背门内板类、后地板类、翼子板类、前围板类、前罩内板类和前罩外板类；所述工艺层面的分类至少包括以下类别：落料工艺、切角工艺、拉延工艺、二次拉延工艺或多次拉延工艺、上成型工艺、下成型工艺、切边工艺、冲孔工艺、冲翻孔工艺、分断工艺、上翻边工艺、下翻边工艺、上整形工艺、下整形工艺、上翻孔工艺、下翻孔工艺、压印工艺、合边工艺、侧切边工艺、侧冲孔工艺、侧冲翻孔工艺、侧翻孔工艺、侧翻边工艺及侧整形工艺；所述模具结构层面的分类至少包括以下类别：导向结构、框架结构、工作结构、运动机构和压力源；所述产品分类信息则包括上述产品类别。
其中，所述设计元素包括基本设计元素及衍生设计元素，所述基本设计元素至少包括零件的型面和轮廓线，所述衍生设计元素至少包括：根据产品的型面及轮廓大小，定义需要拆分多少镶块；根据产品零件的尺寸大小，定义需要多少导向元件；根据产品的型面、轮廓大小和料厚，定义需要多大压料力，并定义需要多少压力元件。
其中，所述设计元素还包括通用设计元素和与工序对应的专用设计元素，其中每一工序均包括通用设计元素及专用设计元素，所述通用设计元素指每一工序都包括的设计元素，所述专用设计元素指工序所对应的特有设计元素。
其中，所述逻辑规则单元内存储有若干逻辑规则，所述逻辑规则包括模具设计时所采用的设计逻辑规则及数学逻辑规则，所述模具设计时所采用的设计逻辑规则包括材料选择规则、强度设计规则和最小设计原则，所述数学逻辑规则为模具设计时所采用的逻辑规则与数值之间的对应关系，所述逻辑规则被转换为逻辑表达式，所述逻辑表达式包括：真假函数、与或非函数和大于小于等于函数。
其中，所述数学模型单元内存储有若干数学模型，所述数学模型包括若干拓扑数学模型f(x)，所述拓扑数学模型f(x)为三维模具中每一个零件的结构和特征参数间建立的相关联的拓扑数学坐标变换函数关系式，所述特征参数至少包括零件的位置、长、宽、高、打孔数、通孔直径、曲率、与其他零件的位置关系和干涉关系以及经由型面和轮廓几何对象衍生的各类逻辑表达式及数学关系式。
本申请还提供了一种汽车覆盖件模具智能设计方法，包括：
输入待设计模具对应的汽车覆盖件产品的分类信息及设计元素；
对输入的DL工艺图进行分析，以对其进行设计元素分析并得到该DL工艺图的设计元素；
结合输入的产品分类信息及DL工艺图，以得到待设计模具的产品所对应的信息，所述信息至少包括：产品分类信息、产品几何信息、工序类别、工序数量、生产信息参数及生产设备信息；
对分析得到的设计元素及产品信息进行分离分解，以将上述所有设计元素及产品信息全部变为相对独立；
将分解后的设计元素及产品信息进行数值化，即将每一个设计元素及每一个产品信息均转换为数值和/或字符串；
结合逻辑规则及数学模型对分解后的数值化的设计元素及产品信息进行运算处理，以得到若干特征参数值，所述特征参数值至少包括各产品的位置、长、宽、高、打孔数、通孔直径、曲率、与其他产品的位置关系和干涉关系以及经由型面和轮廓几何对象衍生的各类逻辑表达式及数学关系式；
结合逻辑规则及数学模型生成若干基础形状及零件，并生成若干基础形状及零件之间的位置关系及干涉关系；
根据得到的若干参数值、若干基础形状、零件及该若干基础形状与零件之间的位置关系及干涉关系得到待设计模具的汽车覆盖件的模具的三维设计图；以及
根据所得到的汽车覆盖件的模具的三维设计图生成对应的二维模具装配件工程图及模具零件配置清单。
其中，所述汽车覆盖件产品的产品种类信息包括以下三个层面的分类：产品层面的分类、工艺层面的分类以及模具结构层面的分类；其中所述产品层面的分类至少包括以下类别：前门外板类、前门内板类、前地板类、顶盖类、侧围类、后侧围内板类、后门外板类、后门内板类、背门外板类、背门内板类、后地板类、翼子板类、前围板类、前罩内板类和前罩外板类；所述工艺层面的分类至少包括以下类别：落料工艺、切角工艺、拉延工艺、二次拉延工艺或多次拉延工艺、上成型工艺、下成型工艺、切边工艺、冲孔工艺、冲翻孔工艺、分断工艺、上翻边工艺、下翻边工艺、上整形工艺、下整形工艺、上翻孔工艺、下翻孔工艺、压印工艺、合边工艺、侧切边工艺、侧冲孔工艺、侧冲翻孔工艺、侧翻孔工艺、侧翻边工艺及侧整形工艺；所述模具结构层面的分类至少包括以下类别：导向结构、框架结构、工作结构、运动机构和压力源；所述产品分类信息则包括上述产品类别。
其中，所述设计元素包括基本设计元素及衍生设计元素，所述基本设计元素至少包括零件的型面和轮廓线，所述衍生设计元素至少包括：根据产品的型面及轮廓大小，定义需要拆分多少镶块；根据产品零件的尺寸大小，定义需要多少导向元件；根据产品的型面、轮廓大小和料厚，定义需要多大压料力，并定义需要多少压力元件；所述设计元素还包括通用设计元素和与工序对应的专用设计元素，其中每一工序均包括通用设计元素及专用设计元素，所述通用设计元素指每一工序都包括的设计元素，所述专用设计元素指工序所对应的特有设计元素；通过对DL工艺图进行分析，以得到其所包含的工序类别及各工序之间的顺序，进而得到对应的通用设计元素及专用设计元素，并对其进行组合排布。
其中，所述逻辑规则包括模具设计时所采用的设计逻辑规则及数学逻辑规则，所述模具设计时所采用的设计逻辑规则包括材料选择规则、强度设计规则和最小设计原则，所述数学逻辑规则为模具设计时所采用的逻辑规则与数值之间的对应关系，所述逻辑规则被转换为逻辑表达式，所述逻辑表达式包括：真假函数、与或非函数和大于小于等于函数；所述数学模型包括若干拓扑数学模型f(x)，所述拓扑数学模型f(x)为三维模具中每一个零件的结构和特征参数间建立的相关联的拓扑数学坐标变换函数关系式，所述特征参数至少包括零件的位置、长、宽、高、打孔数、通孔直径、曲率、与其他零件的位置关系和干涉关系以及经由型面和轮廓几何对象衍生的各类逻辑表达式及数学关系式。
通过上述汽车覆盖件模具智能设计系统，设计人员不再需要一步步做三维零部件造型和投影二维工程图，只需通过人机对话界面，做一些简单的选定和输入，就可以快速地自动生成目标模具的全部三维模型、二维工程图以及材料清单，大约整套模具设计只需一天时间。这项技术带来的不仅是设计速度的巨变，设计精准度和合理性也大大地提高。输出 的模型、图纸和清单可以更快捷且无缝地传递到生产环节，是实现“数字工厂”和“智能制造”的最佳设计解决方案。
附图说明
图1是本申请所述的一种汽车覆盖件模具智能设计系统的较佳实施方式的方框图。
图2是图1中汽车覆盖件模具智能设计系统的工艺示意图。
图3是本申请所述的一种汽车覆盖件模具智能设计方法的较佳实施方式的流程图。
具体实施方式
为了使本申请实现的技术手段、创作特征、达成目的与功效易于明白了解，下面结合具体图示，进一步阐述本申请。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”和“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本申请中的具体含义。
请参考图1所示，其为本申请所述的一种汽车覆盖件模具智能设计系统的较佳实施方式的方框图。所述汽车覆盖件模具智能设计系统的较佳实施方式包括产品选择模块1、DL工艺图分析模块2、智能转换模块3、智能推算模块5、虚拟模型模块6、模具模型转换模块7、二维工程图转换模块8及模具零件明细表生成模块9。各模块的功能请同时参考图2所示，图2为图1中汽车覆盖件模具智能设计系统的工艺示意图。结合图1及图2可对本申请所述的汽车覆盖件模具智能设计系统的工作原理进行说明。
所述产品选择模块1配置成用户通过人机界面输入产品种类信息。具体地，本申请中，所述产品选择模块1配置成输入待设计模具的汽车覆盖件产品的分类信息。更为具体地，本申请所述的一种汽车覆盖件模具智能设计系统内设置有整个汽车的覆盖件爆炸图，用户可直接通过在爆炸图上选择对应的产品部件即可选择对应的产品种类信息。
不同的车型、不同的覆盖件产品、不同的冲压工艺以及不同的设计结构，其模具设计逻辑规则既有相同部分，也有不同部分。本申请中，对整个汽车的覆盖件按照产品、冲压工艺及设计结构进行分类细化，以总结正确的逻辑关系，进而组合建立合理的数学模型f(x)，实现设计系统的智能化。
本实施方式中，所述产品分类包括以下三个层面的分类：产品层面的分类、工艺层面的分类以及模具结构层面的分类。具体地，在产品层面的分类中，整个汽车覆盖件至少包括以下类别：右前门外下板、右前门内板、右前地板、顶盖、右侧围、右后侧围内板、右后门外板、右后门内板、背门外板、背门内板、左后侧围内板、左后门内板、左后门外板、 后地板、左前地板、左侧围、左前门内板、右翼子板、左前门外板、前围板、左翼子板、前罩内板和前罩外板。根据每一产品的形状可将上述产品分为以下类别(举例说明)：前门外板类、前门内板类、前地板类、顶盖类、侧围类、后侧围内板类、后门外板类、后门内板类、背门外板类、背门内板类、后地板类、翼子板类、前围板类、前罩内板类和前罩外板类。所述产品分类信息则包括上述产品类别。当然其他实施方式中亦可根据产品在车身上的位置、产品材料、冲压工艺、模具结构等进行分类。对于相似的零件，其逻辑规则组合也是相似的。
在工艺层面的分类中，针对汽车覆盖件，其工艺类别至少包括：落料工艺、切角工艺、拉延工艺、二次拉延工艺或多次拉延工艺、上成型工艺、下成型工艺、切边工艺、冲孔工艺、冲翻孔工艺、分断工艺、上翻边工艺、下翻边工艺、上整形工艺、下整形工艺、上翻孔工艺、下翻孔工艺、压印工艺、合边工艺、侧切边工艺、侧冲孔工艺、侧冲翻孔工艺、侧翻孔工艺、侧翻边工艺及侧整形工艺等。同时，每一类别的产品又对应包括不同的工艺数量。例如：一个车门内板的模具，通常是四套(即由四个组合工序完成产品的加工)，每次对应不同车型的车门内板，具体工艺上又会产生一定的变化。比如A车型车门内板，第二工序是切边+冲孔，而B车型车门内板，第二工序是切边+冲孔+侧切边。该工艺类别及工艺数量是根据模具设计规则来制定，亦可根据设计人员的经验来制定。
在模具结构层面的分类中，针对汽车覆盖件，其至少包括：导向结构、框架结构、工作结构、运动机构、压力源、标准部件和自定义部件，整车中，会因产品不同、工艺不同以及用户标准不同而产生不同变化。
总体上来说，不同的汽车覆盖件产品会对应不同的冲压工艺及工艺组合，而且对于产品的不同标准要求都会对模具最终的设计结构产生很大影响。本申请中，所述汽车覆盖件模具智能设计系统采用分类法，对不同要素引起的相同和不同部分进行元素化分类，同时将对应的设计逻辑元素化到极细的程度，以形成若干设计逻辑条目(即下文所述的逻辑规则)。
所述DL工艺图分析模块2对DL工艺图进行分析。本实施方式中，DL工艺图是对产品设计图进行冲压工艺设计及CAE分析而得到。所述DL工艺图中包含了产品的工艺类别，包括：拉延、切边、冲孔、翻边和整形等，该工艺类别为模具设计中的逻辑规则，在此不对其进行详细论述。所述DL工艺图分析模块2配置成接收用户输入的DL工艺图，并对所接收的DL工艺图进行分析，以对DL工艺图的设计元素进行分析，以得到该DL工艺图的设计元素。本实施方式中，所述设计元素包括基本设计元素及衍生设计元素，所述基本设计元素至少包括零件的型面和轮廓线等。所述基本设计元素为显式，即可以通过用户直观辨识，当用户直观辨识得到基本设计元素后即可通过产品选择模块1输入汽车覆盖件模具 智能设计系统。所述衍生设计元素至少包括：根据产品的型面及轮廓大小，定义需要拆分多少镶块；根据产品零件的尺寸大小，定义需要多少导向元件；根据产品的型面、轮廓大小和料厚，定义需要多大压料力，并定义需要多少压力元件。
同时，所述设计元素还包括通用设计元素和与工序对应的专用设计元素，其中每一工序均包括通用设计元素及专用设计元素，所述通用设计元素指每一工序都包括的设计元素。本申请中，所述通用设计元素可能是基础设计元素，也可能是衍生设计元素，比如前工序型面工艺中即只包括一个基础的通用设计元素，又比如导板的规格和定位工艺中即包括一个衍生设计元素组。
所述专用设计元素指工序所对应的特有设计元素。本申请中，所述专用设计元素可以包括基础设计元素，也可以包括衍生设计元素，比如切边线工艺中即包括一个基础专用元素。又比如切边工艺中即包括一个衍生设计元素组。
所述DL工艺图分析模块2配置成对DL工艺图进行分析，以得到其所包含的工序类别及各工序之间的顺序，进而得到对应的通用设计元素及专用设计元素，并对其进行组合排布。本实施方式中，所述DL工艺图分析模块2通过逻辑规则及数学模型函数对DL工艺图进行运算以得到其设计元素，还通过用户手工输入基本设计元素。
所述DL工艺图分析模块2还配置成对输入的DL工艺图及产品分类信息进行分析，以得到待设计模具的产品所对应的信息。本实施方式中，所述信息包括：产品分类信息、产品几何信息、工序类别及组合、生产参数信息(至少包括：自动生产线和手动生产线等)及生产设备参数。
举例如下：假设现在需要设计一套模具，对象零件为车顶盖，其工序为切边、冲孔及侧整形。当用户输入DL工艺图、产品类别及基本设计元素后，本申请所述的汽车覆盖件模具智能设计系统即调用汽车覆盖件通用规则组合、车顶盖专用规则组合、切边规则组合、冲孔规则组合及侧整形规则组合，且每个组合中又包含了若干所需生成的零部件组合规则。
所述智能转换模块3配置成将由所述DL工艺图分析模块2分析得到的设计元素及产品信息进行分离分解，以将上述所有设计元素及产品信息全部变为相对独立。同时，所述智能转换模块3还配置成将分解后的设计元素及产品信息进行数值化，即将每一个设计元素及每一个产品信息均转换为数值或字符串。
所述智能推算模块5包括逻辑规则单元50及数学模型单元51，配置成结合逻辑规则及数学模型对分解后的数值化的设计元素及产品信息进行运算处理，以得到若干特征参数值。所述特征参数至少包括各零件的位置、长、宽、高、打孔数、通孔直径、曲率、与其他零件的位置关系及干涉关系等，还包括经由型面和轮廓等几何对象衍生的各类逻辑表达式及数学关系式。
具体地，所述逻辑规则单元50内存储有若干逻辑规则，本实施方式中，所述逻辑规则包括模具设计时所采用的逻辑规则及数学逻辑规则，所述模具设计时所采用的逻辑规则包括诸如材料选择规则、强度设计规则和最小设计原则等，所述数学逻辑规则为模具设计时所采用的逻辑规则与数值之间的对应关系。其中，所述逻辑规则被转换为逻辑表达式，所述逻辑表达式包括：真假函数、与或非函数和大于小于等于函数。逻辑表达式要结合一组组参数共同构建数学模型f(x)，再经程序编译调制，进行行为计算和参数计算，经过计算得出的行为和参数配置成构建智能对象，虚拟模型(虚拟模型是由若干智能对象，以及计算得出的行为和参数共同构建而成)。
所述数学模型单元51内存储有若干数学模型，本实施方式中，所述数学模型包括若干拓扑数学模型f(x)，所述拓扑数学模型f(x)是依据各种汽车覆盖件生产标准、汽车覆盖件模具设计技术规范以及模具设计专家经验，总结和归纳的汽车覆盖件模具设计的逻辑规律而数字化得出。通过三维模具中各个零件的特征参数映射各个零件的拓扑关系(大小、形状和位置)，即在三维模具的每一个零件的结构和特征参数间建立相关联的拓扑数学坐标变换f(x)函数关系式，所述特征参数至少包括零件的位置、长、宽、高、打孔数、通孔直径、曲率、与其他零件的位置关系及干涉关系等，以及经由型面和轮廓等几何对象衍生的各类逻辑表达式及数学关系式。
所述虚拟模型模块6包括智能对象生成模组60、逻辑规则单元61及数学模型单元62，所述智能对象生成模组60包括逻辑规则单元63及数学模型单元65。所述逻辑规则单元63内存储有若干逻辑规则，本实施方式中，所述逻辑规则包括模具设计时所采用的逻辑规则及数学逻辑规则，所述模具设计时所采用的逻辑规则与数学逻辑规则与上面所描述的相同，在此不再赘述。
所述数学模型单元65内存储有若干数学模型，本实施方式中，所述数学模型包括若干拓扑数学模型f(x)，其具体形式与上面所描述的相同，在此不再赘述。
本实施方式中，所述智能对象生成模组60配置成生成若干基础形状及零件。具体来说，所述智能对象生成模组60配置成根据逻辑规则单元63内存储的若干逻辑规则及数学模型单元62内存储的若干数学模型生成若干基础形状及零件，还配置成生成若干基础形状及零件之间的位置关系及干涉关系等。
所述模具模型转换模块7配置成根据由所述智能推算模块5得到的若干参数值、由所述虚拟模型生成模块6所得到的若干基础形状、零件及该若干基础形状和零件之间的位置关系及干涉关系得到新的汽车覆盖件模具的三维设计图。
所述二维工程图转换模块8配置成根据所得到的汽车覆盖件模具的三维设计图自动生成对应的二维模具装配件工程图。所述模具零件明细表生成模块9配置成根据所得到的汽 车覆盖件模具的三维设计图自动生成对应的模具零件配置清单，如此可避免人工记录零件配置清单和人工转换二维模具装配件工程图带来的耗时长和记录错误等问题，大大地降低了劳动强度，加快汽车覆盖件模具设计速度，提高汽车覆盖件模具设计质量。
本申请中，所述汽车覆盖件模具智能设计系统至少包括三种设计语言：拓扑数学模型f(x)、设计软件的开发计算机语言(本实施方式采用CATIA设计软件，对应的计算机语言为CAA)以及底层开发计算机语言(本实施方式采用C++语言)，其中，所述拓扑数学模型f(x)配置成在三维模具的每一个零件的结构和特征参数间建立相关联的拓扑数学坐标变换函数关系式，所述底层开发计算机语言配置成对已构建的数学模型f(x)进行编译以将其全部转换为程序语言，所述设计软件的开发计算机语言配置成对设计软件进行二次开发以使得整个汽车覆盖件模具智能设计系统与设计软件无缝对接。所述汽车覆盖件模具智能设计系统通过建立数学模型f(x)函数关系集，并运用CATIA设计系统二次开发的CAA语言和计算机C++语言，对所建立的数学模型f(x)函数关系集进行计算机二次开发联接，得到所述汽车覆盖件模具智能设计系统。本实施方式中以CATIA设计软件为例进行说明，当然其他实施方式亦可采用其他的设计软件，比如UG/NX和SolidWorks等，只需要通过做对应的二次开发即可将本申请所述的汽车覆盖件模具智能设计系统与设计软件衔接起来。
具体来说，本申请中，根据模具设计的逻辑规则建立逻辑表达式和数学函数公式，以构建数学模型f(x)，之后利用底层开发计算机语言(C++)对已构建的数学模型f(x)进行编译，将其全部转换为程序语言，然后通过设计软件的开发计算机语言对设计软件进行二次开发，以使得整个汽车覆盖件模具智能设计系统与设计软件无缝对接。本申请中，利用设计软件的开发计算机语言对设计软件进行二次开发的目的是将模具设计系统的引擎部分所输出的结果通过设计软件转换为肉眼可见的三维模型、二维图纸及BOM表等。
所述汽车覆盖件模具智能设计系统首先根据生产要求选择产品的工序类别、工序数量、产品分类信息、生产参数信息及生产设备信息等，然后通过内建的逻辑规则及数学模型计算得到三维模具的一个或多个零件的特征参数，并对应改变所述f(x)函数关系集，即当任何一个零件结构和特征参数的坐标变化时，其他零件都会按照模具的逻辑关系通过数学模型计算，自动生成对应匹配的三维尺寸结构和特征，即任何一个特征参数发生变化都会引起触一发动全身的效果，然后再由改变后的f(x)函数关系集生成三维目标模具：即所欲求得的新的汽车覆盖件模具的三维设计图。
下面将通过一个简单的例子来描述f(x)函数关系集：假设某一模具的下模长度为a、中模长度为b并且上模长度为c，则根据模具设计的逻辑规则建立下模长度a与中模长度b之间的函数关系f(x)、下模长度a与上模长度c之间的函数关系f(x)以及中模长度b与下模长度c之间的函数关系f(x)，还可以建立下模上各零件的尺寸与下模、中模和上模的尺寸之 间的函数关系f(x)、中模上各零件的尺寸与下模、中模和上模的尺寸之间的函数关系f(x)、上模上各零件的尺寸与下模、中模和上模的尺寸之间的函数关系f(x)以及上模上各零件的表面曲率与下模、中模和上模的尺寸之间的函数关系f(x)等，如此，当整套模具中的某一个零件的尺寸或形状发生变化时，即会引起触一发动全身的效果，整套模具中的其他零件都会按照上述函数关系通过数学模型计算，自动生成对应匹配的三维尺寸结构和特征。另外，函数关系f(x)还可包括零件间的真假逻辑关系，比如当某一个零件的尺寸超过某一值时，模具上对应地将减少另一个零件。
通过本实施例所述的汽车覆盖件模具智能设计系统，设计人员不需要做任何三维零部件造型和投影二维工程图，只是通过人机对话界面，调整汽车覆盖件模具逻辑关系参数，就可以快速地自动生成模具的三维零部件造型和二维零部件工程图及零件材料清单，大约整套模具设计只需要1或2个小时左右，而且设计的精准度也大大地提高，这个技术的出现将会预示未来的模具设计是通过数学模型计算来完成整体模具设计智能化，而不是通过建立大型零部件数据库来组合模具，因为我们的整体模具设计理念和技术与现在模具设计状态有巨大的区别，特别是汽车覆盖件领域，该技术将预示未来几年内汽车覆盖件模具设计领域会发生巨大的变化。
总体来说，本申请所述的汽车覆盖件模具智能设计系统通过对输入的DL工艺图进行分析，以得知DL工艺图中所包含的产品类型信息、工艺信息及设计元素，并将得到的产品类型信息、工艺信息及设计元素结合f(x)函数关系集及逻辑规则进行运算，以得到若干数值化的参数，该若干数值化的参数被输入至诸如CATIA设计软件，以得到欲设计的汽车覆盖件模具的三维设计图，之后再根据得到的三维设计图得到二维模具装配件工程图及模具零件配置清单。
请继续参考图3所示，其为本申请所述的一种汽车覆盖件模具设计方法的较佳实施方式的流程图，所述汽车覆盖件模具设计方法的较佳实施方式包括：
步骤S1：输入待设计模具对应的汽车覆盖件产品的分类信息及设计元素。
步骤S2：对输入的DL工艺图进行分析，以对其进行设计元素分析并得到该DL工艺图的设计元素。
步骤S3：结合输入的产品分类信息及DL工艺图，以得到待设计模具的产品所对应的信息，所述信息至少包括：产品分类信息、产品几何信息、工序类别、工序数量、生产信息参数及生产设备信息。
步骤S4：对分析得到的设计元素及产品信息进行分离分解，以将上述所有设计元素及产品信息全部变为相对独立。
步骤S5：将分解后的设计元素及产品信息进行数值化，即将每一个设计元素及每一个 产品信息均转换为数值和/或字符串。
步骤S6：结合逻辑规则及数学模型对分解后的数值化的设计元素及产品信息进行运算处理，以得到若干参数值。
步骤S7：结合逻辑规则及数学模型生成若干基础形状，并生成若干基础形状之间的位置关系及干涉关系。
步骤S8：根据得到的若干参数值、若干基础形状及该若干基础形状之间的位置关系及干涉关系得到新的汽车覆盖件模具的三维设计图。
步骤S9：根据所得到的汽车覆盖件模具的三维设计图自动生成对应的二维模具装配件工程图及模具零件配置清单。
以上仅为本申请的实施方式，并非因此限制本申请的专利范围，凡是利用本申请说明书及附图内容所作的等效结构，直接或间接运用在其他相关的技术领域，均同理在本申请的专利保护范围之内。

Claims (10)

  1. 一种汽车覆盖件模具智能设计系统，包括：
    产品选择模块，配置成输入待设计模具的汽车覆盖件产品的产品种类信息；
    DL工艺图分析模块，配置成接收用户输入的DL工艺图，并对DL工艺图进行分析，以得到其所包含的工序类别及工序之间的顺序，进而得到对应的通用设计元素及专用设计元素，并对其进行组合排布；所述DL工艺图分析模块还配置成对输入的DL工艺图及产品分类信息进行分析，以得到待设计模具的产品所对应的信息，所述信息包括：产品分类信息、产品几何信息、工序类别及组合、生产参数信息及生产设备参数；
    智能转换模块，配置成将设计元素及产品信息进行分离分解，以将上述所有设计元素及产品信息全部变为相对独立，并将分解后的设计元素及产品信息进行数值化，以将每一个设计元素及每一个产品信息均转换为数值或字符串；
    智能推算模块，包括逻辑规则单元及数学模型单元，配置成结合逻辑规则及数学模型对分解后的数值化的设计元素及产品信息进行运算处理，以得到若干特征参数值，所述特征参数值至少包括各产品的位置、长、宽、高、打孔数、通孔直径、曲率、与其他产品的位置关系和干涉关系以及经由型面和轮廓几何对象衍生的各类逻辑表达式及数学关系式；
    虚拟模型模块，包括智能对象生成模组、逻辑规则单元及数学模型单元，所述智能对象生成模组包括逻辑规则单元及数学模型单元，所述逻辑规则单元内存储有若干逻辑规则，所述数学模型单元内存储有若干数学模型，所述智能对象生成模组配置成根据逻辑规则单元内存储的若干逻辑规则及数学模型单元内存储的若干数学模型生成若干基础形状及零件，还配置成生成若干基础形状及零件之间的位置关系及干涉关系；
    模具模型转换模块，配置成根据由所述智能推算模块得到的若干参数值、由所述虚拟模型生成模块所得到的若干基础形状、零件及该若干基础形状以及零件之间的位置关系及干涉关系得到待设计模具的汽车覆盖件的模具的三维设计图；
    二维工程图转换模块，配置成根据所得到的汽车覆盖件模具的三维设计图生成对应的二维模具装配件工程图；以及
    模具零件明细表生成模块，配置成根据所得到的汽车覆盖件模具的三维设计图生成对应的模具零件配置清单。
  2. 如权利要求1所述的汽车覆盖件模具智能设计系统，其特征在于：所述汽车覆盖件产品的产品种类信息包括以下三个层面的分类：产品层面的分类、工艺层面的分 类以及模具结构层面的分类；其中所述产品层面的分类至少包括以下类别：前门外板类、前门内板类、前地板类、顶盖类、侧围类、后侧围内板类、后门外板类、后门内板类、背门外板类、背门内板类、后地板类、翼子板类、前围板类、前罩内板类和前罩外板类；所述工艺层面的分类至少包括以下类别：落料工艺、切角工艺、拉延工艺、二次拉延工艺或多次拉延工艺、上成型工艺、下成型工艺、切边工艺、冲孔工艺、冲翻孔工艺、分断工艺、上翻边工艺、下翻边工艺、上整形工艺、下整形工艺、上翻孔工艺、下翻孔工艺、压印工艺、合边工艺、侧切边工艺、侧冲孔工艺、侧冲翻孔工艺、侧翻孔工艺、侧翻边工艺及侧整形工艺；所述模具结构层面的分类至少包括以下类别：导向结构、框架结构、工作结构、运动机构和压力源；所述产品分类信息则包括上述产品类别。
  3. 如权利要求1所述的汽车覆盖件模具智能设计系统，其特征在于：所述设计元素包括基本设计元素及衍生设计元素，所述基本设计元素至少包括零件的型面和轮廓线，所述衍生设计元素至少包括：根据产品的型面及轮廓大小，定义需要拆分多少镶块；根据产品零件的尺寸大小，定义需要多少导向元件；根据产品的型面、轮廓大小和料厚，定义需要多大压料力，并定义需要多少压力元件。
  4. 如权利要求3所述的汽车覆盖件模具智能设计系统，其特征在于：所述设计元素还包括通用设计元素和与工序对应的专用设计元素，其中每一工序均包括通用设计元素及专用设计元素，所述通用设计元素指每一工序都包括的设计元素，所述专用设计元素指工序所对应的特有设计元素。
  5. 如权利要求1所述的汽车覆盖件模具智能设计系统，其特征在于：所述逻辑规则单元内存储有若干逻辑规则，所述逻辑规则包括模具设计时所采用的设计逻辑规则及数学逻辑规则，所述模具设计时所采用的设计逻辑规则包括材料选择规则、强度设计规则和最小设计原则，所述数学逻辑规则为模具设计时所采用的逻辑规则与数值之间的对应关系，所述逻辑规则被转换为逻辑表达式，所述逻辑表达式包括：真假函数、与或非函数和大于小于等于函数。
  6. 如权利要求1所述的汽车覆盖件模具智能设计系统，其特征在于：所述数学模型单元内存储有若干数学模型，所述数学模型包括若干拓扑数学模型f(x)，所述拓扑数学模型f(x)为三维模具中每一个零件的结构和特征参数间建立的相关联的拓扑数学坐标变换函数关系式，所述特征参数至少包括零件的位置、长、宽、高、打孔数、通孔直径、曲率、与其他零件的位置关系和干涉关系以及经由型面、轮廓几何对象衍生的各类逻辑表达式及数学关系式。
  7. 一种汽车覆盖件模具智能设计方法，包括：
    输入待设计模具对应的汽车覆盖件产品的分类信息及设计元素；
    对输入的DL工艺图进行分析，以对其进行设计元素分析并得到该DL工艺图的设计元素；
    结合输入的产品分类信息及DL工艺图，以得到待设计模具的产品所对应的信息，所述信息至少包括：产品分类信息、产品几何信息、工序类别、工序数量、生产信息参数及生产设备信息；
    对分析得到的设计元素及产品信息进行分离分解，以将上述所有设计元素及产品信息全部变为相对独立；
    将分解后的设计元素及产品信息进行数值化，即将每一个设计元素及每一个产品信息均转换为数值和/或字符串；
    结合逻辑规则及数学模型对分解后的数值化的设计元素及产品信息进行运算处理，以得到若干特征参数值，所述特征参数值至少包括各产品的位置、长、宽、高、打孔数、通孔直径、曲率、与其他产品的位置关系和干涉关系以及经由型面和轮廓几何对象衍生的各类逻辑表达式及数学关系式；
    结合逻辑规则及数学模型生成若干基础形状及零件，并生成若干基础形状及零件之间的位置关系及干涉关系；
    根据得到的若干参数值、若干基础形状、零件及该若干基础形状与零件之间的位置关系及干涉关系得到待设计模具的汽车覆盖件的模具的三维设计图；以及
    根据所得到的汽车覆盖件的模具的三维设计图生成对应的二维模具装配件工程图及模具零件配置清单。
  8. 如权利要求7所述的汽车覆盖件模具智能设计方法，其特征在于：所述汽车覆盖件产品的产品种类信息包括以下三个层面的分类：产品层面的分类、工艺层面的分类以及模具结构层面的分类；其中所述产品层面的分类至少包括以下类别：前门外板类、前门内板类、前地板类、顶盖类、侧围类、后侧围内板类、后门外板类、后门内板类、背门外板类、背门内板类、后地板类、翼子板类、前围板类、前罩内板类和前罩外板类；所述工艺层面的分类至少包括以下类别：落料工艺、切角工艺、拉延工艺、二次拉延工艺或多次拉延工艺、上成型工艺、下成型工艺、切边工艺、冲孔工艺、冲翻孔工艺、分断工艺、上翻边工艺、下翻边工艺、上整形工艺、下整形工艺、上翻孔工艺、下翻孔工艺、压印工艺、合边工艺、侧切边工艺、侧冲孔工艺、侧冲翻孔工艺、侧翻孔工艺、侧翻边工艺及侧整形工艺；所述模具结构层面的分类至少包括以下类别：导向结构、框架结构、工作结构、运动机构和压力源；所述产品分类信息则包括上述产品类别。
  9. 如权利要求7所述的汽车覆盖件模具智能设计方法，其特征在于：所述设计元素包括基本设计元素及衍生设计元素，所述基本设计元素至少包括零件的型面和轮廓线，所述衍生设计元素至少包括：根据产品的型面及轮廓大小，定义需要拆分多少镶块；根据产品零件的尺寸大小，定义需要多少导向元件；根据产品的型面、轮廓大小和料厚，定义需要多大压料力，并定义需要多少压力元件；所述设计元素还包括通用设计元素和与工序对应的专用设计元素，其中每一工序均包括通用设计元素及专用设计元素，所述通用设计元素指每一工序都包括的设计元素，所述专用设计元素指工序所对应的特有设计元素；通过对DL工艺图进行分析，以得到其所包含的工序类别及各工序之间的顺序，进而得到对应的通用设计元素及专用设计元素，并对其进行组合排布。
  10. 如权利要求7所述的汽车覆盖件模具智能设计方法，其特征在于：所述逻辑规则包括模具设计时所采用的设计逻辑规则及数学逻辑规则，所述模具设计时所采用的设计逻辑规则包括材料选择规则、强度设计规则和最小设计原则，所述数学逻辑规则为模具设计时所采用的逻辑规则与数值之间的对应关系，所述逻辑规则被转换为逻辑表达式，所述逻辑表达式包括：真假函数、与或非函数和大于小于等于函数；所述数学模型包括若干拓扑数学模型f(x)，所述拓扑数学模型f(x)为三维模具中每一个零件的结构和特征参数间建立的相关联的拓扑数学坐标变换函数关系式，所述特征参数至少包括零件的位置、长、宽、高、打孔数、通孔直径、曲率、与其他零件的位置关系和干涉关系以及经由型面、轮廓几何对象衍生的各类逻辑表达式及数学关系式。
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