CN112347587A - Method for intelligently generating integral die by using virtual model logic module - Google Patents
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Abstract
The invention discloses a method for intelligently generating an integral die by using a virtual model logic module, which comprises the following steps: s1, classifying the technological parameters and characteristics of the mold design to obtain different functional types, and establishing an input end according to the functional types; s2, establishing a corresponding virtual model algorithm according to the function type to obtain a corresponding virtual model function block; s3, inputting the process parameters and the characteristic values into the virtual model function block through the function type input end, and automatically generating three-dimensional model parts through the mathematical model algorithm and the computer program algorithm of the virtual model; and S4, intelligently distributing the three-dimensional model parts in the designed mold space through a virtual model algorithm to generate the required integral mold. The invention can eliminate the repeated labor of designers, improve the design efficiency, verify the correctness of product design more quickly, does not need manual trial and error, improves the design efficiency and rationality and can output the design result more quickly and better.
Description
Technical Field
The invention relates to an intelligent mold design and manufacturing technology, in particular to a method for intelligently generating an integral mold by using a virtual model logic module.
Background
In the mold design in the prior art, generally, a design engineer manually designs dozens or hundreds of three-dimensional parts for combined assembly according to the complexity of a design process and according to requirements, the arrangement of all parts in the mold is completely judged by manpower subjectively, a random test piece mode is adopted, and a final result is obtained by continuous manual cycle trial and error correction. The design of the integral die with complex parts is more time-consuming and labor-consuming, the design efficiency is low, and the requirement of rapid industrial production is difficult to achieve.
Disclosure of Invention
The invention aims to provide a method for intelligently generating an integral die by using a virtual model logic module, which has short design period and high design efficiency.
According to one aspect of the invention, a method for intelligently generating a whole mold by using a virtual model logic module is provided, which is characterized by comprising the following steps:
s1, classifying the technological parameters and characteristics of the mold design to obtain different technological function types, and establishing input ends according to the different technological function types;
s2, establishing corresponding virtual model algorithms according to different process function types to obtain corresponding virtual model function blocks;
s3, inputting the process parameters and the characteristic values into the virtual model function block through the function type input end, and automatically generating the required three-dimensional model parts of the mould;
and S4, distributing the three-dimensional model parts in the designed mould space intelligently through the part distribution algorithm of the virtual model to generate the required integral mould.
In some embodiments, the process parameters and characteristic information described in step S1 include parting lines, blank lines, material shrinkage lines, trim lines, punch lines, trim lines, and the like.
In some embodiments, the virtual model function block described in step S2 includes: the device comprises a blanking virtual model function block, a drawing virtual model function block, a cutting virtual model function block, a flanging virtual model function block, a shaping virtual model function block, a hole flanging virtual model function block, a die body (an upper die seat, a material pressing device, a blank holder and a lower die seat), an end head virtual model function block and the like.
In some embodiments, the step S2, wherein the virtual model building algorithm further includes: and establishing a mathematical equation model and a computer program algorithm according to the logic relation and the process function type of each different process parameter and characteristic change, the engineering boundary condition of the die part, namely the mathematical necessary condition, the engineering constraint condition, namely the mathematical sufficient condition, and the boundary condition and the constraint condition of the die part.
In some embodiments, the part distribution algorithm of the virtual model of step S4 further includes the following steps:
S4-A1, determining the assembly sequence of the virtual three-dimensional model parts according to the weights of the multiple mould parts;
S4-A2, assembling the virtual three-dimensional model parts to be assembled to the designed mould space in sequence;
S4-A3, eliminating the mutual collision and interference area of parts to obtain the reasonable combination assembly area of each virtual three-dimensional model part;
and S4-A4, establishing assembly paths and coordinate positions between the die parts by a part distribution algorithm of the virtual model according to the logical relationship of the die design and the incidence relationship between the parts, the boundary conditions of the die parts and the constraint conditions between the die parts.
In some embodiments, the step S4 further includes:
S4-B1, randomly grouping the virtual three-dimensional model parts to obtain a plurality of groups of random samples;
S4-B2, distributing the random samples to a virtual space to perform a random distribution algorithm experiment;
S4-B3, eliminating the mutual collision and interference area of the die parts to obtain the reasonable assembly area of each virtual three-dimensional model part;
and S4-B4, establishing assembly paths and coordinate positions among the mould parts according to the logical relation of the mould design and the incidence relation among the parts, the boundary conditions of the parts and the constraint conditions among the parts.
In some embodiments, the step S4-B1 further comprises: grouping is carried out in a permutation and combination mode to serve as random events, the sizes of different dies with different product part sizes serve as dynamic boundary conditions to serve as necessary conditions, incidence relation constraint conditions, namely sufficient conditions, of the die parts are grouped according to the dynamic boundary conditions of the dies, and a plurality of parts are grouped on the dies according to the constraint conditions to be distributed to form a plurality of groups of random samples.
In some embodiments, the step S4-B2 further comprises: designing the step pitch of a randomly distributed dynamic boundary to serve as an area for finding parts with mutual collision and interference in a small sample random experiment; an algorithm experiment using mathematical probability distribution as distribution is used, the step distance is continuously reduced and the value of the approximate limit step distance is reduced to carry out a large sample random experiment, and the collision and interference area of parts in the boundary condition of the die is found, so that a safety regression line, namely the area where the parts have no collision and interference with each other, is found.
The invention has the beneficial effects that: the repeated labor of designers is largely eliminated, and the design efficiency is improved. The correctness of the product design can be verified more quickly. The change of the input elements is pulled to move the whole body, only replacement, calculation and updating are needed, and no additional stove is needed, thus wasting time and labor. The system does not need manual trial and error, improves the design efficiency and rationality, and can quickly and efficiently learn and accumulate knowledge, and can output the design result more quickly and better.
Drawings
Fig. 1 is a schematic structural diagram of a blanking-class virtual model in embodiment 1 of the present invention;
FIG. 2 is a schematic structural diagram of a drawing-type virtual model according to embodiment 2 of the present invention;
fig. 3 is a schematic structural diagram of a blanking-type virtual model according to embodiment 3 of the present invention;
FIG. 4 is a schematic view of a virtual model structure of a flange type according to embodiment 4 of the present invention;
FIG. 5 is a schematic structural diagram of a shaping virtual model in accordance with embodiment 5 of the present invention;
fig. 6 is a schematic structural view of a hole flanging-type virtual model according to embodiment 6 of the present invention;
fig. 7 is a schematic structural view of an upper die holder according to embodiment 7 of the present invention;
fig. 8 is a schematic structural view of a swage according to embodiment 7 of the present invention;
FIG. 9 is a schematic view of the structure of a blank holder according to embodiment 7 of the present invention;
FIG. 10 is a schematic structural view of the lower die holder of embodiment 7 of the present invention;
fig. 11 is a schematic structural view of a member such as a tip and a lug according to embodiment 7 of the present invention.
Detailed Description
The invention provides a method for intelligently generating an integral die by using a virtual model logic module, which comprises the following steps:
s1, classifying the technological parameters and characteristics of the mold design to obtain different technological function types, and establishing input ends according to the different technological function types;
the design of the die comprises the steps of firstly designing a process and then designing a structure, classifying the process parameters and characteristics of the die design to obtain different functional types, wherein the die process can comprise a parting surface, a parting line, a blank line, a material shrinkage line, a trimming line, a punching line, a flanging line, a shaping parting line and the like.
S2, establishing corresponding virtual model algorithms according to different process function types to obtain corresponding virtual model function blocks;
the virtual model function block may include: the device comprises a blanking virtual model function block, a drawing virtual model function block, a cutting virtual model function block, a flanging virtual model function block, a shaping virtual model function block, a hole flanging virtual model function block, a die body and end head virtual model function block and the like. Virtual model function blocks can be added according to requirements.
The method for establishing the virtual model algorithm comprises the following steps: and establishing a mathematical model algorithm and a computer program algorithm according to the logic relation and the process function type of each different process parameter and characteristic change, the engineering boundary condition of the die part, namely the mathematical necessary condition and the engineering constraint condition, namely the mathematical sufficient condition.
S3, inputting the process parameters and the characteristic values into the virtual model function block through the input ends of different function types, inputting the changed process parameters and the changed characteristic into the virtual model according to the intelligent back propagation principle BP (Back propagation), and automatically generating the required three-dimensional entity model through the virtual model algorithm.
And S4, intelligently distributing the virtual three-dimensional model parts in the designed mold space to generate the required integral mold.
The method for intelligently distributing the three-dimensional model parts generated by the virtual model in the designed mold space can adopt the following steps: random sample distribution algorithms, topological mathematical coordinate transformation algorithms, graph mode algorithms, computer program algorithms, and the like.
One embodiment of the above step S4 is as follows:
S4-A1, determining the assembly sequence combination of the virtual three-dimensional model parts according to the weights of the multiple parts;
S4-A2, assembling the virtual three-dimensional model parts to be assembled to the designed mould space in sequence;
S4-A3, eliminating the mutual collision and interference area of the parts to obtain the assembly area of each virtual three-dimensional model part;
and S4-A4, establishing assembly paths and coordinate positions between the mould parts according to the logical relation of the mould design and the incidence relation between the parts, the boundary conditions of the mould parts and the constraint conditions between the mould parts.
Another embodiment of the step S4 is as follows:
S4-B1, randomly grouping the multiple virtual three-dimensional model parts to obtain a plurality of groups of random samples;
grouping is carried out in a permutation and combination mode to serve as random events, the sizes of different dies with different product part sizes serve as dynamic boundary conditions to serve as necessary conditions, incidence relation constraint conditions, namely sufficient conditions, of the die parts are grouped according to the dynamic boundary conditions of the dies, and a plurality of parts are grouped on the dies according to the constraint conditions to be distributed to form a plurality of groups of random samples.
S4-B2, distributing the random samples to a virtual space of the mold samples to perform an algorithm experiment of random distribution;
designing the step pitch of the dynamic boundary of the randomly distributed samples as the area of the parts where mutual collision and interference between the parts are found in the small sample random experiment; the mathematical probability distribution can be used for carrying out a distributed algorithm experiment, the step distance is continuously reduced, the approach limit step distance value is continuously reduced, a large sample random experiment is carried out, and the collision and interference area of the parts in the boundary condition of the die is found, so that a safety regression line, namely the area where the parts do not collide and interfere with each other, is found.
S4-B3, eliminating the mutual collision and interference area of the die parts to obtain the assembly area of each virtual three-dimensional model part;
and S4-B4, establishing assembly paths and coordinate positions among the parts according to the logical relationship of the mold design and the incidence relationship among the parts, the boundary conditions of the mold parts and the constraint conditions among the mold parts.
The present invention will be described in further detail with reference to specific examples.
Example 1
Virtual model of blanking parameter characteristics:
and establishing a function type input end of blanking class. The blanking line is the main parameter of blanking, and the line shape of the blanking line comprises a square, a rectangle, an ellipse, a trapezoid, a closed curve, a triangle and the like. Square-its dynamics can be expressed in a square mathematical formula. Rectangle-its dynamics can be expressed in a rectangular mathematical formula. Circle-its dynamics can be expressed in a circular mathematical formula. Ellipse-its dynamic can be expressed in terms of an elliptical mathematical formula. Trapezoidal-its dynamics can be expressed in trapezoidal mathematical formulas. Closed curve-its dynamic can be expressed by a closed curve mathematical formula. Triangle-its dynamic change mathematical model and program algorithm can be expressed by a triangle mathematical formula. And combining the mathematical formulas of the function types to obtain a mathematical expression of the type corresponding to the X1 parameter characteristics of the blanking line, and obtaining a virtual function module of the blanking line through a virtual model mathematical algorithm. And then obtaining a three-dimensional entity of a trimming insert and a corner cutting insert according to the linear shape of a blanking line by a program algorithm according to the logical relationship of the die and the boundary conditions and the constraint conditions of the die parts, namely the incidence relationship among the parts, and carrying out the blanking process of the die plate to obtain the virtual three-dimensional model part of the blanking class of the die. The product parts herein refer to: door, front shroud, top cap, panel board etc. and the mould part indicates: standard parts and non-standard parts such as guide posts, guide sleeves, ejector rods, wedges and the like; the mould parts comprise parts and parts, wherein the parts are as follows: the upper die seat, the material pressing device, the blank holder, the lower die seat and the like are all castings; the parts are standard and non-standard.
Example 2
Drawing a virtual model of the parameter characteristics:
and establishing related function type input ends of the drawing classes. The blank line is a drawing main parameter, and the line shape of the blank line comprises a square shape, a rectangular shape, a circular shape, an oval shape, a trapezoidal shape, a closed curve shape and the like. Square-its dynamics can be expressed in a square mathematical formula. Rectangle-its dynamics can be expressed in a rectangular mathematical formula. Circle-its dynamics can be expressed in a circular mathematical formula. Oval- -its dynamic can be expressed in terms of an oval mathematical formula. Trapezoidal-its dynamics can be expressed in trapezoidal mathematical formulas. Closed curve-mathematical models and algorithms such as dynamic changes can be expressed by using a closed curve mathematical formula. And combining the mathematical formulas of the parameter characteristics to obtain a mathematical expression of the type corresponding to the X21 parameter characteristics of the blank line, and obtaining a virtual function module of the blank line through a virtual model mathematical algorithm. And then according to the logical relationship of the die, the boundary condition of the die and the constraint condition, namely the incidence relationship between parts, obtaining a drawing boundary line of the plate according to the line shape of a blank line through a program algorithm, drawing the plate into a drawing surface three-dimensional entity required by the process, deriving a main reinforcing rib and an auxiliary reinforcing rib by using a parting line X22, and generating parts such as an upper die, a material pressing device, a blank holder, a lower die and the like through the drawing process parameters and characteristics through the algorithm to obtain the virtual three-dimensional model part of the drawing class of the die.
Example 3
Virtual model of the cutting and punching parameter characteristics:
and establishing related function type input ends of the cutting and punching class. The trimming line is a main parameter of the trimming and punching type, and the line shape of the trimming line comprises a straight line, a curve, a dividing straight line, a dividing curve, a full-circumference curve, a square, a rectangle, a circle, an ellipse and the like. Straight line-its dynamics can be expressed in straight line mathematical formulas. Curve-its dynamics can be expressed in a curve mathematical formula. Line of segmentation-its dynamic variation can be expressed in a mathematical formula of a line of segmentation. Segmentation curve-its dynamics can be expressed in a segmentation curve mathematical formula. Full-cycle curve-its dynamics can be expressed in a full-cycle curve mathematical formula. And so on. Circle-its dynamics can be expressed in a circular mathematical formula. Ellipse-its dynamic can be expressed in terms of an elliptical mathematical formula. Square-its dynamics can be expressed in a square mathematical formula. Rectangle-mathematical models and algorithms for procedures that can express its dynamics in a rectangular mathematical formula. And combining the mathematical formulas of the parameter characteristics to obtain a mathematical expression of the type corresponding to the parameter characteristics of the tangent line X3, and obtaining a virtual function module of the tangent line through a virtual model mathematical algorithm. According to the logical relationship of the die, the boundary condition of the die and the constraint condition, namely the incidence relationship between parts, the trimming line is converted into a linear cutter, a linear segmentation cutter, a curve segmentation cutter, a full-circle cutter and three-dimensional entities of punching punches in various shapes through a program algorithm, so that the virtual three-dimensional model parts of the die cutter type entities are obtained.
Example 4
Virtual model of flanging parameter characteristic:
and establishing related function type input ends of the flanging types. The flanging line is a main parameter of flanging class, and the line shape of the flanging line comprises a straight line, a curve, a dividing straight line, a dividing curve, a full-circle curve and the like. Straight line — its dynamic can be expressed in a straight line mathematical formula. Curve- - -its dynamic variation can be expressed by a curve mathematical formula. Straight line of segmentation-its dynamic change can be expressed by a straight line of segmentation mathematical formula. Segmentation curve-its dynamic change can be expressed by a segmentation curve mathematical formula. The whole-cycle curve-mathematical formula can be used for expressing dynamic change mathematical models and program algorithms thereof. And combining the mathematical formulas of the parameter characteristics to obtain a mathematical expression of the type corresponding to the parameter characteristics of the flanging line, and obtaining a virtual function module of the flanging line X4 through a virtual model mathematical algorithm. Then according to the logical relationship of the die, the boundary condition of the die and the constraint condition, namely the incidence relationship between the parts, the flanging line is changed into a three-dimensional entity of a linear flanging insert, a linear segmentation flanging insert, a curved flanging insert and a full-circle flanging insert through a program algorithm, and the three-dimensional entity is the virtual three-dimensional model part of the flanging class of the die.
Example 5
Virtual model of shaping parameter characteristics:
and establishing related function type input ends of the shaping classes. The edge turning line, the shaping parting line and the parting surface are main parameters of the shaping virtual model, and the main line shape of the virtual model comprises a straight line, a curve, a segmentation straight line, a segmentation curve, a full-circle curve and the like. Straight line-can express its dynamic change by straight line mathematical formula, curve-can express its dynamic change by curve mathematical formula, straight line of segmentation-can express its dynamic change by straight line of segmentation mathematical formula, curve of segmentation-can express its dynamic change by curve of segmentation mathematical formula, curve of whole week-can express its dynamic change by curve of whole week mathematical formula, etc. mathematical model and program algorithm. And establishing type mathematical expressions corresponding to parameter characteristics such as edge turning lines, shaping parting lines and parting surfaces, and obtaining the virtual function module through a virtual model mathematical algorithm. And converting the flanging line X51, the shaping parting line X52 and the parting surface into a three-dimensional entity of the shaping insert through a program algorithm according to the logical relationship of the die and the boundary conditions and the constraint conditions of the die, namely the incidence relationship among the parts, so as to obtain the virtual three-dimensional model part of the shaping class of the die.
Example 6
Virtual model of hole flanging parameter characteristics:
and establishing related function type input ends of the hole flanging classes. The hole flanging line is a main hole flanging parameter, and the line shape of the hole flanging line comprises a rectangle, a circle, an ellipse, a closed curve and the like. Circular-its dynamics can be expressed in a circular mathematical formula. Oval- -its dynamic can be expressed in terms of an oval mathematical formula. Square- -its dynamic can be expressed in a square mathematical formula. Rectangle-its dynamic change can be expressed by a rectangle mathematical formula. Closed curve-mathematical formulas can be used to express mathematical models and algorithms for dynamic changes of the closed curve. And establishing a mathematical expression of the type corresponding to the hole flanging parameter characteristics, and obtaining a virtual function module of the hole flanging line X6 through a virtual model mathematical algorithm. And then according to the logical relationship of the die and the boundary conditions and the constraint conditions of the die, namely the incidence relationship among the parts, changing the trimming lines into a three-dimensional entity of the flanging stamping insert through a program algorithm to obtain the virtual three-dimensional model parts of the flanging class of the die.
Example 7
Virtual model of the model body and end part parameter characteristics:
referring to fig. 7, the upper die base can express its dynamic change by mathematical formulas and program algorithms according to parameters and profile characteristics in the process and then according to the logical relationship of the die, the boundary conditions of the die and the association relationship between the constraints, i.e. the parts.
Referring to fig. 8, the binder — can express its dynamic changes by mathematical formulas and program algorithms according to parameters and profile characteristics in the process and then according to the logical relationship of the mold, the boundary conditions of the mold and the constraint conditions, i.e., the relationship between the parts.
Referring to fig. 9, the binder ring can express its dynamic change by mathematical formulas and program algorithms according to parameters and profile characteristics in the process and then according to the logical relationship of the mold, the boundary conditions of the mold and the constraint conditions, i.e., the association relationship between the parts.
Referring to fig. 10, the lower die holder can express its dynamic change by mathematical formulas and program algorithms according to parameters and profile characteristics in the process and then according to the logical relationship of the die, the boundary conditions of the die and the constraint conditions, i.e., the relationship between the parts.
Referring to fig. 11, the head and the lifting lug can express the dynamic change of the components according to parameters and profile characteristics in the process and then according to the logical relation of the die, the boundary conditions of the die and the constraint conditions, namely the incidence relation between parts by using a mathematical formula and a program algorithm.
Example 8
Virtual model of intelligent distribution among parts:
when several parts are assembled in the mold, we can arrange the installation sequence according to the weight of the parts, for example: part a, part B, part C … … (A, B, C), (B, A, C), (B, C, A) … …. When the weight is not obvious, the random events can be grouped in a permutation and combination mode, the sizes of different dies with different product part sizes are used as dynamic boundary conditions, namely necessary conditions, and the incidence relation constraint conditions of the parts are used as sufficient conditions. The dynamic boundary conditions of the die are grouped, and several parts are grouped according to the constraint conditions and distributed on the designed die sample, so that several groups of random samples required by people are formed. And then, carrying out a random distribution experiment according to the random sample generated by the random event. For example, when we select several random samples, we design the step pitch of the randomly distributed dynamic boundary, i.e. the part where the parts collide and interfere with each other in the random experiment of the small sample is an unwanted region. Mathematical probability distributions may be used, for example: the method comprises the following steps of performing distributed algorithm experiments, coordinate transformation algorithms using topological mathematics, optimal path algorithms using graphic models, optimal combination algorithms using virtual spaces, and other mathematical algorithms in modes of discrete distribution, continuous distribution, sampling distribution, polynomial distribution and the like, wherein the mathematical algorithm software can be used for: maple, MatLab, etc. The large sample random experiment is carried out by continuously reducing the step pitch and approaching the limit step pitch value, so that the collision and interference areas of the parts in the boundary condition of the die can be found, and a safe regression line, namely the areas where the parts do not collide and interfere with each other, namely, a distributed intelligent algorithm when a plurality of parts are combined on the die, can be found, parts of the whole die can be assembled reasonably in space, and an intelligently distributed whole virtual model between the parts of the die is obtained.
Interpretation of terms:
boundary conditions-there are different dynamic mold sizes within different types of models, the maximum and minimum values of the sizes need to be considered when designing the mold, the virtual model is a three-dimensional model completed by an algorithm, and therefore the size range, i.e. the boundary conditions of the mold, has to be defined.
Constraint condition-in the mold design, all the things are reasonable and relevant, different sizes of the mold have associated relationship combinations of parts with different sizes, each part is positioned by considering whether the part is interfered and collided with other parts when positioned, whether the stress of the whole mold is balanced when a plurality of parts are assembled is also considered, and the relevant conditions are the constraint conditions when each part is positioned.
The invention adopts the logical relation of die design and the back propagation principle of artificial intelligence, takes the technological parameters and characteristics of die design as the input ends of the model, divides the technological parameters and characteristics into different functional types, and establishes corresponding virtual model functional blocks, namely a blanking virtual model functional block, a drawing virtual model functional block, a cutting virtual model functional block, a flanging virtual model functional block, a shaping virtual model functional block, a hole flanging virtual model functional block, a die body and an end head virtual model functional block and the like.
Different types of products have different die sizes, the design processes of the products are different dynamic changes, the function of the virtual model is to summarize the function types of different process parameters and characteristics, a mathematical model algorithm and a computer program algorithm are established according to the logic relations of the products, the input process parameters and characteristics are automatically generated into a three-dimensional entity model required by the user through the virtual model algorithm, and each virtual model function block establishes an assembly path and a coordinate position between parts according to the logic relations of the die design, the association relations between the parts, the boundary conditions of the die parts and the constraint conditions between the parts.
And according to different parts, different die design processes and different procedures, different virtual model function blocks are called by corresponding different sequential arrangement combinations. And assembling the die parts in a virtual space by using a virtual model function of intelligent distribution among the zero parts, such as a random sample distribution algorithm, a topological mathematical coordinate transformation algorithm, a graphic model algorithm, a computer program algorithm and the like. The establishment of the mold engineering logical relationship and the interdisciplinary joint algorithm of a mathematical algorithm (capable of being solved by mathematical algorithm software: Maple, MatLab, and the like) and a computer program algorithm (C, C + +, C #, and the like), namely, the combination of the logic function modules of the virtual model can intelligently generate the integral mold.
What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various virtual models can be invoked in various process designs without departing from the inventive concept, and that various modifications and improvements can be made to the virtual models, which fall within the scope of the invention.
Claims (8)
1. The method for intelligently generating the integral die by using the virtual model logic module is characterized by comprising the following steps of:
s1, classifying the technological parameters and characteristics of the mold design to obtain different technological function types, and establishing input ends according to the different technological function types;
s2, establishing corresponding virtual model algorithms according to different process function types to obtain corresponding virtual model function blocks;
s3, inputting the process parameters and the characteristic values into the virtual model function block through the process function type input end, and automatically generating the required three-dimensional model parts of the mould;
and S4, intelligently distributing the three-dimensional model parts of the mould in the designed mould space through a part distribution algorithm of the virtual model to generate the required integral mould.
2. The method for intelligently generating an integral mold with a virtual model logic module as claimed in claim 1, wherein the process parameters and characteristic information in step S1 include parting line, blank line, material shrinkage line, trimming line, punching line, flanging line, shaping parting line.
3. The method for intelligently generating an integral mold with a virtual model logic module according to claim 1 or 2, wherein the virtual model function block in step S2 comprises: the device comprises a blanking virtual model function block, a drawing virtual model function block, a cutting virtual model function block, a flanging virtual model function block, a shaping virtual model function block, a hole flanging virtual model function block, a die body and an end head virtual model function block.
4. The method for intelligently generating a full mold with a virtual model logic module according to claim 1 or 2, wherein said establishing a corresponding virtual model algorithm in step S2 further comprises: and establishing a mathematical model algorithm and a computer program algorithm according to the logic relation and the process function type of each different process parameter and characteristic change, the engineering boundary condition of the die part, namely the mathematical necessary condition and the engineering constraint condition, namely the mathematical sufficient condition.
5. The method for intelligently generating a full mold with a virtual model logic module as claimed in claim 1, wherein said part distribution algorithm of the virtual model of step S4 further comprises the steps of:
S4-A1, determining the assembly sequence of the virtual three-dimensional model parts according to the weights of the multiple mould parts;
S4-A2, assembling the virtual three-dimensional model parts to be assembled to the designed mould space in sequence;
S4-A3, eliminating the mutual collision and interference area of parts to obtain the reasonable combination assembly area of each virtual three-dimensional model part;
and S4-A4, establishing assembly paths and coordinate positions between the die parts by a part distribution algorithm of a virtual model according to the logical relationship of the die design, the incidence relationship between the parts, the boundary conditions of the parts and the constraint conditions between the parts.
6. The method for intelligently generating a full mold with a virtual model logic module as claimed in claim 1, wherein the part distribution algorithm of the virtual model of step S4 comprises the following steps:
S4-B1, randomly grouping the virtual three-dimensional model parts to obtain a plurality of groups of random samples;
S4-B2, distributing the random samples to a virtual space to perform a random distribution algorithm experiment;
S4-B3, eliminating the mutual collision and interference area of the die parts to obtain the reasonable assembly area of each virtual three-dimensional model part;
and S4-B4, establishing assembly paths and coordinate positions among the mould parts according to the logical relation of the mould design and the incidence relation among the parts, the boundary conditions of the parts and the constraint conditions among the parts.
7. The method for intelligently generating a full mold with a virtual model logic module of claim 6, wherein the steps S4-B1 further comprise: grouping is carried out in a permutation and combination mode to serve as random events, the sizes of different dies with different product part sizes serve as dynamic boundary conditions to serve as necessary conditions, incidence relation constraint conditions, namely sufficient conditions, of the die parts are grouped according to the dynamic boundary conditions of the dies, and a plurality of parts are grouped on the dies according to the constraint conditions to be distributed to form a plurality of groups of random samples.
8. The method for intelligently generating a full mold with a virtual model logic module of claim 6, wherein the steps S4-B2 further comprise: designing the step pitch of a randomly distributed dynamic boundary to serve as an area for finding parts with mutual collision and interference in a small sample random experiment; an algorithm experiment using mathematical probability distribution as distribution is used, the step distance is continuously reduced and the value of the approximate limit step distance is reduced to carry out a large sample random experiment, and the collision and interference area of parts in the boundary condition of the die is found, so that a safety regression line, namely the area where the parts have no collision and interference with each other, is found.
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| CN113408053A (en) * | 2021-06-18 | 2021-09-17 | 成都普什汽车模具有限公司 | Intelligent design method for automobile mold |
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