CN105550387A - Method and system for constructing process model on the basis of parameterization - Google Patents
Method and system for constructing process model on the basis of parameterization Download PDFInfo
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Abstract
The invention discloses a method and a system for constructing a process model on the basis of parameterization. A parameterization design process model is constructed in advance; when a specific part is designed, the parameterization design process model associated with part design is inquired; the design dimension of an appointed processing part is set; according to the design dimension and relevant process knowledge in the parameterization design process model, the process dimension of the appointed processing part and corresponding process margin are obtained; and the obtained process dimension and the obtained corresponding process margin are used for carrying out instantiation on the parameterization design process model to generate a design model and revise corresponding process parameters, label information and process procedure information so as to finish the construction of the process model. The parameterization DPM (Design Process Model) which is generated in advance is called to construct an instancing model, the quick definition of a product and the quick generation of the process are realized, and product design efficiency is improved. Meanwhile, the process knowledge is combined into a product modeling process so as to be beneficial for the precipitation and the inheritance of enterprise knowledge.
Description
Technical field
The present invention relates to three-dimensional process design field, particularly a kind of method and system building process modeling based on parametrization.
Background technology
Along with the development of IT application in enterprises, three-dimensional process coordinate expression technology replaces traditional two-dimentional drawing expression way gradually.Three-dimensional process according to the structure blank model that designs a model, then according to technological process adding technology feature, builds process modeling.Build technology characteristics to build step by step according to the process of reality, process more complicated.
At present, the representative process method of feature based recognition technology extracts design feature by traversal characteristics tree, design feature is mapped as technology characteristics, process is mapped again by technology characteristics, operation merges and generating process code after operation adjustment, achieves the typical process design of axial workpiece and box parts.But the method can only be confined to certain part type, and feature identification is unstable, needs man-machine interactively identification and definition, cannot the demand of meeting requirements on three-dimensional technological design.
Such as, disclose in the prior art and a kind ofly ask intersection ring to judge the characteristic recognition method of slot descriptor by layering, thus solve the feature identification of aircraft complex cavity type parts.But the method needs to carry out pre-service to hole characteristic, and has the limitation of part type, is unsuitable for the feature identification of other types part.
At present based on the representative process method of typical process route, by calling typical process route, after editor's change, generate the process route needed.This method has stability and practicality, is conventional two-dimensional representative process method, can only improve technological design efficiency to a certain extent, in three-dimensional process, and cannot the using of implementation model.
Summary of the invention
The embodiment of the present invention provides a kind of method and system building process modeling based on parametrization.Building instantiation model by calling the parametrization DPM generated in advance, achieving the quick definition of product and the quick generation of technique, improve product design efficiency.Process knowledge is incorporated in Modeling in Product process simultaneously, be of value to precipitation and the succession of Company Knowledge.
According to an aspect of the present invention, a kind of method building process modeling based on parametrization is provided, comprises:
Inquire about the Parametric designing process modeling be associated with design elements;
The design size of specifying processing part is set;
According to the related process knowledge in design size and Parametric designing process modeling, obtain specifying the process of processing part and corresponding process allowance;
Utilize the process and corresponding process allowance that obtain by the instantiation of Parametric designing process modeling, with generative approach model;
Revise corresponding technological parameter, markup information and technological procedure information, thus complete the structure of process modeling.
In one embodiment, according to the related process knowledge in design size and Parametric designing process modeling, obtain specifying the step of the process of processing part and corresponding process allowance to comprise:
The surface roughness requirements of processing part is specified in inquiry;
According to design size and surface roughness requirements, determine the allowance for finish of specifying processing part;
According to design size and allowance for finish, obtain the process of specifying processing part;
According to specifying the blank dimension of processing part and specifying the process of processing part, determine the roughing surplus of specifying processing part.
In one embodiment, the structure of Parametric designing process modeling comprises:
Appointment part is analyzed, determines corresponding technological process;
Corresponding design technology model is created according to technological process;
For corresponding dimensional parameters arranges size ID, add corresponding dimensional parameters title, dimensional parameters initial value, resolved by dimension chain and relation between process allowance determination design size and process;
Definition process code tree information on design technology model, to be associated technology characteristics with technological procedure node;
Technological procedure tree marks corresponding technique information, thus completes the structure of Parametric designing process modeling.
In one embodiment, after amendment corresponding technological parameter, markup information and technological procedure information, also comprise:
Technological procedure card is upgraded.
According to a further aspect in the invention, provide a kind of system building process modeling based on parametrization, comprise query unit, size setting unit, process information knowledge acquirement unit, Model instantiation unit and information amendment unit, wherein:
Query unit, for inquiring about the Parametric designing process modeling be associated with design elements;
Size setting unit, for arranging the design size of specifying processing part;
Process information knowledge acquirement unit, for according to the related process knowledge in design size and Parametric designing process modeling, obtains specifying the process of processing part and corresponding process allowance;
Model instantiation unit, for utilizing the process and corresponding process allowance that obtain by the instantiation of Parametric designing process modeling, with generative approach model;
Information amendment unit, for revising corresponding technological parameter, markup information and technological procedure information, thus completes the structure of process modeling.
In one embodiment, process information knowledge acquirement unit specifically inquires about the surface roughness requirements of specifying processing part, according to design size and surface roughness requirements, determine the allowance for finish of specifying processing part, according to design size and allowance for finish, obtain the process of specifying processing part, according to specifying the blank dimension of processing part and specifying the process of processing part, determine the roughing surplus of specifying processing part.
In one embodiment, system also comprises Parametric designing process modeling construction unit, and wherein Parametric designing process modeling construction unit comprises:
Technological process determination module, for analyzing appointment part, determines corresponding technological process;
Design technology model creation module, for creating corresponding design technology model according to technological process;
Information arranges module, for arranging size ID for corresponding dimensional parameters, adds corresponding dimensional parameters title, dimensional parameters initial value, is resolved and relation between process allowance determination design size and process by dimension chain;
Information definition module, for the tree of definition process code on design technology model information, to be associated technology characteristics with technological procedure node;
Information labeling module, for marking corresponding technique information on technological procedure tree, thus completes the structure of Parametric designing process modeling.
In one embodiment, system also comprises information updating unit, wherein:
Information updating unit, for after information amendment unit revises corresponding technological parameter, markup information and technological procedure information, upgrades technological procedure card.
The present invention builds instantiation model by calling the parametrization DPM generated in advance, achieves the quick definition of product and the quick generation of technique, improves product design efficiency.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 the present invention is based on the schematic diagram that parametrization builds a method embodiment of process modeling.
Fig. 2 is the schematic diagram that the present invention builds a Parametric designing process modeling embodiment.
Fig. 3 is the schematic diagram that the present invention creates a design technology model embodiment.
Fig. 4 is the schematic diagram of a 7 rank axles embodiment.
Fig. 5 is the floor map of 7 rank axles shown in Fig. 4.
Fig. 6 a-Fig. 6 f is 7 rank axle DPM modeling process schematic diagram.
Fig. 7 is the schematic diagram of each parameter association relation of bearing of the present invention.
Fig. 8 is the schematic diagram that present invention process code sets an embodiment.
Fig. 9 is that the present invention obtains the schematic diagram of a process embodiment according to design size and process knowledge.
Figure 10 is that the present invention is by the schematic diagram of parameters by a parametrization DPM instantiation embodiment.
Figure 11 the present invention is based on the schematic diagram that parametrization builds a system embodiment of process modeling.
Figure 12 the present invention is based on the schematic diagram that parametrization builds another embodiment of system of process modeling.
Figure 13 is the schematic diagram of a Parametric designing process modeling construction unit of the present invention embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Illustrative to the description only actually of at least one exemplary embodiment below, never as any restriction to the present invention and application or use.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Unless specifically stated otherwise, otherwise positioned opposite, the numerical expression of the parts of setting forth in these embodiments and step and numerical value do not limit the scope of the invention.
Meanwhile, it should be understood that for convenience of description, the size of the various piece shown in accompanying drawing is not draw according to the proportionate relationship of reality.
May not discuss in detail for the known technology of person of ordinary skill in the relevant, method and apparatus, but in the appropriate case, described technology, method and apparatus should be regarded as a part of authorizing instructions.
In all examples with discussing shown here, any occurrence should be construed as merely exemplary, instead of as restriction.Therefore, other example of exemplary embodiment can have different values.
It should be noted that: represent similar terms in similar label and letter accompanying drawing below, therefore, once be defined in an a certain Xiang Yi accompanying drawing, then do not need to be further discussed it in accompanying drawing subsequently.
First two relational languages are introduced:
1) DPM (Design & ProcessModel): technological design Integrated Model is designing a model based on technological process structure.
2) parametrization DPM (ParametricDesign & ProcessModel): based on the technological design Integrated Model of parametric technology.Process knowledge system, by digitizing technique, is defined in model creation process by parametric technology, sets up the parameterized part model that Design-Oriented personnel define design parameter generating process model by DPM.
Fig. 1 the present invention is based on the schematic diagram that parametrization builds a method embodiment of process modeling.As shown in Figure 1, the method step of the present embodiment comprises:
Step 101, inquires about the Parametric designing process modeling be associated with design elements.
Step 102, arranges the design size of specifying processing part.
Step 103, according to the related process knowledge in design size and Parametric designing process modeling, obtains specifying the process of processing part and corresponding process allowance.
Step 104, utilizes the process and corresponding process allowance that obtain by the instantiation of Parametric designing process modeling, with generative approach model.
Step 105, revises corresponding technological parameter, markup information and technological procedure information, thus completes the structure of process modeling.
Preferably, after amendment corresponding technological parameter, markup information and technological procedure information, also comprise and technological procedure card is upgraded, so that the issue of technological procedure card.
Based on the method building process modeling based on parametrization that the above embodiment of the present invention provides, building instantiation model by calling the parametrization DPM generated in advance, achieving the quick definition of product and the quick generation of technique, improve product design efficiency.Process knowledge is incorporated in Modeling in Product process simultaneously, be of value to precipitation and the succession of Company Knowledge.
Group technology is the similarity based on design of part feature, material characteristics and manufacturing process, is carried out by part classifying to obtain the economic effect close to producing in enormous quantities.According to group technology, part is pressed its similarity Classified into groups, formulating typical process by the model using similar part is one of approach improving modeling efficiency.
Fig. 2 is the schematic diagram that the present invention builds a Parametric designing process modeling embodiment.As shown in Figure 2, the structure of Parametric designing process modeling comprises:
Step 201, analyzes appointment part, determines corresponding technological process.
Step 202, creates corresponding design technology model according to technological process.
Step 203, for corresponding dimensional parameters arranges size ID, adds corresponding dimensional parameters title, dimensional parameters initial value, is resolved and relation between process allowance determination design size and process by dimension chain.
Step 204, definition process code tree information on design technology model, to be associated technology characteristics with technological procedure node.
Step 205, technological procedure tree marks corresponding technique information, thus completes the structure of Parametric designing process modeling.
Wherein, in step 202., model can be built according to the forward process of process sequence.Fig. 3 is the schematic diagram that the present invention creates a design technology model embodiment.As shown in Figure 3:
Step 301, reading designs a model, and sets up corresponding process parameters model.
Step 302, process parameters model adds the operation work step surplus be associated with each finished surface, to generate blank model.
Step 303, for each finished surface, according to the forward process of process sequence, blank model is removed corresponding operation work step surplus successively, until obtain process parameters model.
Below by a concrete example, the present invention will be described.One 7 rank axle as shown in Figure 4, if all start anew design when each design at every turn, then can increase design difficulty.And in the present invention, by building the Parametric designing process modeling relevant to 7 rank axles.Thus build instantiation model when relating to 7 concrete rank axle by calling the parametrization DPM generated in advance, achieve the quick definition of product and the quick generation of technique, improve product design efficiency.
The floor map of 7 rank axles as shown in Figure 5.Wherein relate to connecting key 1, oil sealing 2, bearing 3, gear 4, the axle collar 5, the shaft shoulder 6 and bearing 7.
Known by carrying out analysis to 7 rank axles, corresponding technological process is as shown in table 1.
Table 1
According to above-mentioned analysis, the forward process of process sequence can be adopted to carry out modeling.Namely on the basis of process parameters model, by determining the surface of each needs processing and corresponding operation work step surplus, rapid build blank model.Then on the basis of blank model, according to the forward process of process sequence, for each finished surface, blank model is removed corresponding operation work step surplus successively, until obtain process parameters model, thus determine the technology characteristics relevant to process modeling.In this manner, modeling order and corresponding process sequence as shown in table 2.
| Modeling order | Operation/work step number | Technique | Respective figure |
| 1 | 10 | Blanking | Fig. 6 a |
| 2 | 20 | Car | Fig. 6 b |
| 3 | 21 | Car | Fig. 6 c |
| 4 | 22 | Car | Fig. 6 d |
| 5 | 30 | Milling key groove | Fig. 6 e |
| 6 | 40 | Grinding | Fig. 6 f |
Table 2
Certainly, also by creating corresponding process parameters model, but directly can not create blank model when building model, removing associated materials to be designed a model according to technological process, thus directly obtaining design technology (DP) model.
After create corresponding design technology model according to technological process, for corresponding dimensional parameters arranges size ID, add corresponding dimensional parameters title, dimensional parameters initial value, resolved by dimension chain and relation between process allowance determination design size and process.Afterwards, definition process code tree information on design technology model, to be associated technology characteristics with technological procedure node.Finally on technological procedure tree, mark corresponding technique information, thus complete the structure of Parametric designing process modeling.
Such as, in Figure 5, the radial dimension of blank is A0, and inner ID is d1.For bearing 7, the monolateral allowance for finish of the diameter of axle is A7Y, and inner ID is d93, and the monolateral roughing surplus of the diameter of axle is A7X, and the corresponding process of bearing 7 is A7M, and inner ID is d29.Thus A7Y=f (A7, Ra), Ra are surface roughness requirements, d93=A7Y, d29=A7+2A7Y, wherein A7 is the design size of bearing 7, and corresponding schematic diagram as shown in Figure 7.Corresponding technological procedure tree as shown in Figure 8.
When carrying out the specific design of part, as previously mentioned, the Parametric designing process modeling be associated with design elements can be inquired about, the design size of specifying processing part is set, according to the related process knowledge in described design size and described Parametric designing process modeling, obtain specifying the process of processing part and corresponding process allowance, thus utilize the process and corresponding process allowance that obtain by the instantiation of described Parametric designing process modeling, with generative approach model.
As shown in Figure 9, above-mentioned according to the related process knowledge in design size and Parametric designing process modeling, obtain specifying the step of the process of processing part and corresponding process allowance to comprise:
Step 901, the surface roughness requirements of processing part is specified in inquiry.
Step 902, according to design size and surface roughness requirements, determines the allowance for finish of specifying processing part.
Step 903, according to design size and allowance for finish, obtains the process of specifying processing part.
Step 904, according to specifying the blank dimension of processing part and specifying the process of processing part, determines the roughing surplus of specifying processing part.
Here be still described for 7 rank axles.When specific design, the DPM model be associated with design elements can be inquired about, the design size A7=40 of bearing 7 is set, Ra=1.6, corresponding blank dimension A0=80.As shown in Figure 7, according to parameter and the internal correlation relation of designer's definition:
d1＝80
A7Y＝f(40,1.6)＝0.25
d93＝0.25
d29＝40+0.25×2＝40.5
Corresponding monolateral roughing surplus A7X=(d1-d29)/2.
Thus designer only needs, by inquiring about corresponding parametrization DPM, to arrange corresponding parameter, can obtain designed product model.As shown in Figure 10, in relevant parametrization DPM, bearing 7 is of a size of 70 millimeters, and do not meet the designing requirement of 40 millimeters, by required design size 40 millimeters is driven parametrization DPM, just can obtain required product model easily, improve design efficiency.
Figure 11 the present invention is based on the schematic diagram that parametrization builds a system embodiment of process modeling.As shown in figure 11, this system comprises query unit 1101, size setting unit 1102, process information knowledge acquirement unit 1103, Model instantiation unit 1104 and information amendment unit 1105.Wherein:
Query unit 1101, for inquiring about the Parametric designing process modeling be associated with design elements.
Size setting unit 1102, for arranging the design size of specifying processing part.
Process information knowledge acquirement unit 1103, for according to the related process knowledge in design size and Parametric designing process modeling, obtains specifying the process of processing part and corresponding process allowance.
Preferably, process information knowledge acquirement unit 1103 specifically inquiry specifies the surface roughness requirements of processing part, according to design size and surface roughness requirements, determine the allowance for finish of specifying processing part, according to design size and allowance for finish, obtain the process of specifying processing part, according to specifying the blank dimension of processing part and specifying the process of processing part, determine the roughing surplus of specifying processing part.
Model instantiation unit 1104, for utilizing the process and corresponding process allowance that obtain by the instantiation of Parametric designing process modeling, with generative approach model.
Information amendment unit 1105, for revising corresponding technological parameter, markup information and technological procedure information, thus completes the structure of process modeling.
Based on the system building process modeling based on parametrization that the above embodiment of the present invention provides, building instantiation model by calling the parametrization DPM generated in advance, achieving the quick definition of product and the quick generation of technique, improve product design efficiency.Process knowledge is incorporated in Modeling in Product process simultaneously, be of value to precipitation and the succession of Company Knowledge.
Figure 12 the present invention is based on the schematic diagram that parametrization builds another embodiment of system of process modeling.Compared with embodiment illustrated in fig. 11, in the embodiment shown in fig. 12, information updating unit 1201 is also comprised.Wherein:
Information updating unit 1201, for after information amendment unit revises corresponding technological parameter, markup information and technological procedure information, upgrades technological procedure card.
Preferably, in fig. 12, system also comprises Parametric designing process modeling construction unit 1202, for building Parametric designing process modeling.Wherein concrete structure as shown in figure 13.Wherein:
Technological process determination module 1301, for analyzing appointment part, determines corresponding technological process.
Design technology model creation module 1302, for creating corresponding design technology model according to technological process.
Preferably, design technology model creation module 1302 specifically reads and designs a model, set up corresponding process parameters model, process parameters model adds the operation work step surplus be associated with each finished surface, to generate blank model, for each finished surface, according to the forward process of process sequence, blank model is removed corresponding operation work step surplus successively, until obtain process parameters model.
Certainly, also by creating corresponding process parameters model, but directly can not create blank model when building model, removing associated materials to be designed a model according to technological process, thus directly obtaining design technology (DP) model.
Information arranges module 1303, for arranging size ID for corresponding dimensional parameters, adds corresponding dimensional parameters title, dimensional parameters initial value, is resolved and relation between process allowance determination design size and process by dimension chain.
Information definition module 1304, for the tree of definition process code on design technology model information, to be associated technology characteristics with technological procedure node.
Information labeling module 1305, for marking corresponding technique information on technological procedure tree, thus completes the structure of Parametric designing process modeling.
By implementing the present invention, building instantiation model by calling the parametrization DPM generated in advance, achieving the quick definition of product and the quick generation of technique, improve product design efficiency.Process knowledge is incorporated in Modeling in Product process simultaneously, be convenient to generative approach process integration model, be of value to precipitation and the succession of Company Knowledge.
One of ordinary skill in the art will appreciate that all or part of step realizing above-described embodiment can have been come by hardware, the hardware that also can carry out instruction relevant by program completes, described program can be stored in a kind of computer-readable recording medium, the above-mentioned storage medium mentioned can be ROM (read-only memory), disk or CD etc.
Description of the invention provides in order to example with for the purpose of describing, and is not exhaustively or limit the invention to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Selecting and describing embodiment is in order to principle of the present invention and practical application are better described, and enables those of ordinary skill in the art understand the present invention thus design the various embodiments with various amendment being suitable for special-purpose.
Claims (8)
1. build a method for process modeling based on parametrization, it is characterized in that, comprising:
Inquire about the Parametric designing process modeling be associated with design elements;
The design size of specifying processing part is set;
According to the related process knowledge in described design size and described Parametric designing process modeling, obtain specifying the process of processing part and corresponding process allowance;
Utilize the process and corresponding process allowance that obtain by the instantiation of described Parametric designing process modeling, with generative approach model;
Revise corresponding technological parameter, markup information and technological procedure information, thus complete the structure of process modeling.
2. method according to claim 1, is characterized in that,
According to the related process knowledge in described design size and described Parametric designing process modeling, obtain specifying the step of the process of processing part and corresponding process allowance to comprise:
The surface roughness requirements of processing part is specified in inquiry;
According to described design size and described surface roughness requirements, determine the allowance for finish of specifying processing part;
According to described design size and described allowance for finish, obtain the process of specifying processing part;
According to specifying the blank dimension of processing part and specifying the process of processing part, determine the roughing surplus of specifying processing part.
3. method according to claim 2, is characterized in that, the structure of Parametric designing process modeling comprises:
Appointment part is analyzed, determines corresponding technological process;
Corresponding design technology model is created according to technological process;
For corresponding dimensional parameters arranges size ID, add corresponding dimensional parameters title, dimensional parameters initial value, resolved by dimension chain and relation between process allowance determination design size and process;
Definition process code tree information on design technology model, to be associated technology characteristics with technological procedure node;
Technological procedure tree marks corresponding technique information, thus completes the structure of Parametric designing process modeling.
4. the method according to any one of claim 1-3, is characterized in that,
After amendment corresponding technological parameter, markup information and technological procedure information, also comprise:
Technological procedure card is upgraded.
5. build a system for process modeling based on parametrization, it is characterized in that, comprise query unit, size setting unit, process information knowledge acquirement unit, Model instantiation unit and information amendment unit, wherein:
Query unit, for inquiring about the Parametric designing process modeling be associated with design elements;
Size setting unit, for arranging the design size of specifying processing part;
Process information knowledge acquirement unit, for according to the related process knowledge in described design size and described Parametric designing process modeling, obtains specifying the process of processing part and corresponding process allowance;
Model instantiation unit, for utilizing the process and corresponding process allowance that obtain by the instantiation of described Parametric designing process modeling, with generative approach model;
Information amendment unit, for revising corresponding technological parameter, markup information and technological procedure information, thus completes the structure of process modeling.
6. system according to claim 5, is characterized in that,
Process information knowledge acquirement unit specifically inquires about the surface roughness requirements of specifying processing part, according to described design size and described surface roughness requirements, determine the allowance for finish of specifying processing part, according to described design size and described allowance for finish, obtain the process of specifying processing part, according to specifying the blank dimension of processing part and specifying the process of processing part, determine the roughing surplus of specifying processing part.
7. system according to claim 6, is characterized in that, described system also comprises Parametric designing process modeling construction unit, and wherein Parametric designing process modeling construction unit comprises:
Technological process determination module, for analyzing appointment part, determines corresponding technological process;
Design technology model creation module, for creating corresponding design technology model according to technological process;
Information arranges module, for arranging size ID for corresponding dimensional parameters, adds corresponding dimensional parameters title, dimensional parameters initial value, is resolved and relation between process allowance determination design size and process by dimension chain;
Information definition module, for the tree of definition process code on design technology model information, to be associated technology characteristics with technological procedure node;
Information labeling module, for marking corresponding technique information on technological procedure tree, thus completes the structure of Parametric designing process modeling.
8. the system according to any one of claim 5-7, is characterized in that, described system also comprises information updating unit, wherein:
Information updating unit, for after information amendment unit revises corresponding technological parameter, markup information and technological procedure information, upgrades technological procedure card.
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