CN105550389A - Lightweight processing method and apparatus for product model - Google Patents
Lightweight processing method and apparatus for product model Download PDFInfo
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- CN105550389A CN105550389A CN201510770083.7A CN201510770083A CN105550389A CN 105550389 A CN105550389 A CN 105550389A CN 201510770083 A CN201510770083 A CN 201510770083A CN 105550389 A CN105550389 A CN 105550389A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/30—Circuit design
- G06F30/36—Circuit design at the analogue level
- G06F30/367—Design verification, e.g. using simulation, simulation program with integrated circuit emphasis [SPICE], direct methods or relaxation methods
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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
- G06F30/17—Mechanical parametric or variational design
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2113/00—Details relating to the application field
- G06F2113/20—Packaging, e.g. boxes or containers
Abstract
The invention discloses a lightweight processing method for a product model. The method comprises the steps of analyzing the product model and acquiring a characteristic set of the product model; according to a preset lightweight policy, determining deletable characteristics in the characteristic set; and deleting the deletable characteristics, reserving a geometric structure characteristic and a size characteristic of the product model, and generating a lightweight product model with the same shape structure as the product model. According to the lightweight processing method and apparatus for the product model, the characteristic removal processing can be performed, only a final boundary model structure is reserved, and the assembly level fusion processing can be performed, so that the model storage space can be greatly saved and the model processing speed can be greatly increased; and the lightweight processing of parts is automatically finished, so that the model can be assembled in a lightweight form, the complicated characteristics and the characteristic regeneration problem are avoided, and the working efficiency of designers is improved.
Description
Technical field
The present invention relates to Products Digital modelling technique field, particularly relate to a kind of light-weight technologg method and device of product model.
Background technology
Along with the application of Three-dimensional CAD Technology in product design is day by day deep, the ability that CAD system can carry out complex three-dimensional model is more and more stronger, but also brings a problem, that is: the speed issue of large complicated CAD assembling model process simultaneously.Complex product is often made up of thousands of parts, will build the complete assembling model of product complete machine in a computer, and the model data amount of its required process is very huge, and the time that during process, needs expend is very long.According to existing computer process ability, for complex product, the time of opening a final assembly model often needs tens minutes, time of even several tens minutes.This greatly reduces complex product final assembly model construction and such as connect up on final assembly model, the work efficiency that the various application such as making marked on a map by the making of stringing, explosive view, kinematic analysis of mechanisms, cartoon making, ball.
The most effective way improving the processing speed of cad model carries out light-weight technologg to it.That is, constant or similar in model outward appearance, replace complex model with naive model.At present conventional cad model lightweight realization means has three kinds: one to be model Lightweight Technology based on triangle gridding, that is: adopting tri patch technology be similar to and state model geometric shape, is a kind of model tormulation mode of non-precision.Two is the model Lightweight Technologies suppressed based on tiny characteristics, that is: by identifying, removing the tiny characteristics in model, with this simplified model.Three is the model Lightweight Technologies based on LOD, that is: different according to models show level, and Controlling model display details, reaches the object of simplified model with this.
But above-mentioned three kinds of methods all cannot be applicable to the simplification demand of product final assembly model:
One, model accuracy cannot satisfy the demands.Above-mentioned Lightweight Technology is all replace master mould with approximate model, and model tormulation precision can not meet the exposition need of work mould model.
Two, the angle of level control is different.LOD technology mainly carries out level control from the angle of display, and Product assembly model more needs to carry out level control from the angle of assembling.
Summary of the invention
In view of this, the technical matters that the present invention will solve is to provide a kind of light-weight technologg method of product model, can carry out characteristic processing.
A light-weight technologg method for product model, comprising: analytic product model also obtains the characteristic set of described product model; The deleted feature in described characteristic set is determined according to the lightweight strategy preset; Described feature of deleting is deleted and the geometry characteristic sum size characteristic retaining described product model, generates the product light weighed model with described product model with identical appearance structure.
According to one embodiment of present invention, further, comprising: the characteristic set extracting part model, comprising: part feature, assembly features and design feature; Delete described part feature, described assembly features, and retain the geometry characteristic sum size characteristic in described part feature, generate the part light weighed model with described part model with identical appearance structure.
According to one embodiment of present invention, further, obtain the characteristic set of multiple part models of composition component model, comprising: part feature, assembly features and design feature; Delete respectively and need the described part feature of the part model carrying out light-weight technologg, described assembly features, and the geometry characteristic sum size characteristic retained in described part feature, generate multiple part light weighed model with described multiple part model with identical appearance structure; Described multiple part light weighed model is fused to entirety by the topological structure based on described component model, and records the fusion feature between described multiple part light weighed model, formation component light weighed model.
According to one embodiment of present invention, further, whole machine model is divided into multiple part model or component model; Generate the multiple part light weighed model corresponding with described multiple part model or component model or assembly light weighed model respectively; Described multiple part light weighed model or assembly light weighed model merge by the topological structure based on described whole machine model, and record the fusion feature between described multiple part light weighed model, generate complete machine light weighed model.
According to one embodiment of present invention, further, multiple part models of composition whole machine model or component model are obtained; Extract the characteristic set of described multiple part model respectively, comprising: part feature, assembly features and design feature; Delete respectively and need the described part feature of the part model carrying out light-weight technologg, described assembly features, and the geometry characteristic sum size characteristic retained in described part feature, generate multiple part light weighed model with described multiple part model with identical appearance structure; Described multiple part light weighed model is assembled into entirety by the topological structure based on described whole machine model or component model, and records the assembly features between described multiple part light weighed model, generates light-weighted whole machine model or component model.
According to one embodiment of present invention, further, according to the instruction of the decomposition display received, multiple part light weighed model of the described light-weighted whole machine model of composition or component model are split and show; According to the instruction of the fusion display received, multiple part light weighed model of the described light-weighted whole machine model of composition or component model are combined as entirety and show.
According to one embodiment of present invention, further, described part model, described component model, described whole machine model, described part light weighed model, described assembly light weighed model, described complete machine light weighed model are all three-dimensional model.
A light-weight technologg device for product model, comprising: aspect of model acquiring unit, obtains the characteristic set of described product model for analytic product model; Redundancy feature determining unit, for determining the deleted feature in described characteristic set according to the lightweight strategy preset; Light weight model generation unit, for described feature of deleting being deleted and the geometry characteristic sum size characteristic retaining described product model, generates the product light weighed model with described product model with identical appearance structure.
According to one embodiment of present invention, further, described aspect of model acquiring unit, also for extracting the characteristic set of part model, comprising: part feature, assembly features and design feature; Described redundancy feature determining unit, also for deleting described part feature, described assembly features, and retains the geometry characteristic sum size characteristic in described part feature; Described light weight model generation unit, also for generating the part light weighed model with described part model with identical appearance structure.
According to one embodiment of present invention, further, described aspect of model acquiring unit, also for obtaining the characteristic set of multiple part models of composition component model, comprising: part feature, assembly features and design feature; Described redundancy feature determining unit, also needs the described part feature of the part model carrying out light-weight technologg, described assembly features for deleting respectively, and retains the geometry characteristic sum size characteristic in described part feature; Described light weight model generation unit, also for generating multiple part light weighed model with described multiple part model with identical appearance structure; Described multiple part light weighed model is fused to entirety by the topological structure based on described component model, and records the fusion feature between described multiple part light weighed model, formation component light weighed model.
According to one embodiment of present invention, further, comprising: whole machine model resolving cell, for whole machine model is divided into multiple part model or component model; Described light weight model generation unit, also for generating the multiple part light weighed model corresponding with described multiple part model or component model or assembly light weighed model respectively; Described multiple part light weighed model or assembly light weighed model merge by the topological structure based on described whole machine model, and record the fusion feature between described multiple part light weighed model, generate complete machine light weighed model.
According to one embodiment of present invention, further, described whole machine model resolving cell, also for obtaining multiple part models of composition whole machine model or component model; Described aspect of model acquiring unit, also for extracting the characteristic set of described multiple part model respectively, comprising: part feature, assembly features and design feature; Described redundancy feature determining unit, also needs the described part feature of the part model carrying out light-weight technologg, described assembly features for deleting respectively, and retains the geometry characteristic sum size characteristic in described part feature; Described light-weight technologg device also comprises: assembling model generation unit, for generating multiple part light weighed model with described multiple part model with identical appearance structure; Described multiple part light weighed model is assembled into entirety by the topological structure based on described whole machine model or component model, and records the assembly features between described multiple part light weighed model, generates light-weighted whole machine model or component model.
According to one embodiment of present invention, further, multiple part light weighed model of the described light-weighted whole machine model of composition or component model, for the instruction according to the decomposition display received, are split and show by models show unit; According to the instruction of the fusion display received, multiple part light weighed model of the described light-weighted whole machine model of composition or component model are combined as entirety and show.
The light-weight technologg method of product model of the present invention and device, characteristic processing can be carried out, only retain final boundary model structure, and the fusion treatment of assembling level can be carried out, greatly can save the space of model storage and the speed of model treatment, automatically complete the lightweight of parts.
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 is the process flow diagram of an embodiment of light-weight technologg method according to product model of the present invention;
Fig. 2 is the light-weighted schematic diagram of part in an embodiment according to the light-weight technologg method of product model of the present invention;
Fig. 3 is the model schematic of the lightweight assembling of an embodiment of light-weight technologg method according to product model of the present invention;
Fig. 4 is the lightweight assembling schematic diagram of an embodiment of light-weight technologg method according to product model of the present invention;
Fig. 5 is according to the user interface schematic diagram in an embodiment of the light-weight technologg device of product model of the present invention;
Fig. 6 A is the original schematic diagram of component model, and Fig. 6 B is the schematic diagram of component model after light-weight technologg;
Fig. 7 A is the original schematic diagram of part model, and Fig. 7 B is the schematic diagram of part model after light-weight technologg;
Fig. 8 is according to the module diagram in an embodiment of the light-weight technologg device of product model of the present invention.
Embodiment
With reference to the accompanying drawings the present invention is described more fully, exemplary embodiment of the present invention is wherein described.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.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.Below in conjunction with each figure and embodiment, many-sided description is carried out to technical scheme of the present invention.
Fig. 1 is the process flow diagram of an embodiment of light-weight technologg method according to product model of the present invention, as shown in Figure 1:
Step 101, analytic product model also obtains the characteristic set of product model.
Step 102, according to the deleted feature in the lightweight strategy determination characteristic set preset.
Step 103, can delete feature and delete and the geometry characteristic sum size characteristic of retained product model, generate the product light weighed model with product model with identical appearance structure.
Product model can be single part, assembly or whole machine model.In one embodiment, for part model, extract the characteristic set of part model, comprising: part feature, assembly features and design feature etc.Such as, to build 3 dimension module moulds to part in the software product of character-driven, part feature comprises: boss, groove, chamfering, chamber, shell etc., and the relation between each feature, such as set membership etc.Assembly features comprises the assembly relation etc. with other part in complete machine or assembly.Design feature comprises view information feature etc.
Delete part feature, assembly features, and retain the geometry characteristic sum size characteristic in part feature.Such as, to an axle with central through hole, this axle and axle sleeve assemble.The part feature of axle comprises: the set membership etc. of end face, hole and hole and end face.The assembly features of axle comprises: with the assembly relation etc. of axle sleeve.Design feature comprises: front view, vertical view information etc.
When carrying out lightweight to this axle, delete the assembly features of axle, as the assembly relation etc. with axle sleeve.Delete part feature, as the set membership etc. of hole and end face, but geometry in reservation part feature and size, as end face, hole etc.Generate the part light weighed model with part model with identical appearance structure, needing to delete which feature user can oneself define.
In one embodiment, parts lightweight is by former component feature information being suppressed, and to reduce model its data amount, eliminates parts regenerative process simultaneously, thus the rapid loading of implementation model.Need ensure that the moulding of part model does not change, and each inter-module topological relation to be consistent with master mould, and preserve the information such as quality, view of master mould, as shown in Figure 2:
Step 201-204, extracts the design information features such as the design of part information of master mould, inter-module assembly information, view from master pattern.
Step 205, exports component structural information characteristics.
Step 206, extracts component structural information characteristics, reconstruct lightweight component, and automatically assembles according to assembly information, and design information is write lightweight component.
In one embodiment, obtain the characteristic set of multiple part models of composition component model, comprising: part feature, assembly features and design feature.Delete the part feature of multiple part model, assembly features respectively, and retain the geometry characteristic sum size characteristic in part feature, generate multiple part light weighed model with multiple part model with identical appearance structure.Multiple part light weighed model is fused to entirety by the topological structure based on component model, and records the fusion feature between multiple part light weighed model, formation component light weighed model.
Such as, an assembly comprises the axle sleeve of axle and axle cooperation therewith, first respectively light-weight technologg is carried out to axle and axle sleeve, obtain the light weighed model of axle and axle sleeve, according to the former topological structure of this assembly, the light weighed model of axle and axle sleeve is assembled again, namely merge, record the assembly features of the light weighed model about axle and axle sleeve, generate the light weighed model of this assembly.
Due in actual production process, only there is the detail of himself in different production divisions to the topological structure relevant to this department in designing a model, and will not pay close attention to the model detail of other departments.Therefore, model by the merging of inter-module, can realize further light weight effect.
To its topological structure of model of detail be had to retain, all the other Model Fusion be overall.Meanwhile, the information of record fusion, can fusion be launched at any time when needed, can greatly reduce the data volume of model, and distinguish to some extent with traditional LOD method, model can launch dynamically at any time and merge.First, screening needs the assembly merged, and extracts fuse information, the present fusion state of judgment models from model; Then, by status information feedback to user, whether merged by user's Controlling model; Finally, according to the model state of user's input, automatically by Model Fusion/expansion.
In one embodiment, whole machine model is divided into multiple part model or component model, generates the multiple part light weighed model corresponding with multiple part model or component model or assembly light weighed model respectively.Multiple part light weighed model or assembly light weighed model merge by the topological structure based on whole machine model, and record the fusion feature between multiple part light weighed model, generate complete machine light weighed model.
Obtain multiple part models of composition whole machine model or component model, extract the characteristic set of multiple part model respectively, comprising: part feature, assembly features and design feature etc.Delete the part feature, the assembly features that need the part model carrying out light-weight technologg respectively, and retain the geometry characteristic sum size characteristic in part feature, generate multiple part light weighed model with multiple part model with identical appearance structure.Multiple part light weighed model is assembled into entirety by the topological structure based on whole machine model or component model, and records the assembly features between multiple part light weighed model, generates light-weighted whole machine model or component model.
Complete machine lightweight and lightweight is divided into assemble two kinds of modes according to user's user demand difference.Wherein:
(1) the light-weighted major function of complete machine carries out light-weight technologg to existing product complete machine CAD assembling model, when ensureing that its model structure and topological relation do not change, forms the lightweight 3-D geometric model of complete machine.
(2) lightweight assembling is when completing product component design, automatically generates its lightweight model of parts, and based on lightweight parts, carry out the lightweight assembling of machine product, and its basic thought as shown in Figure 3.
The light-weight technologg method of the product model in above-described embodiment, can carry out characteristic processing.General cad model is all feature based, and feature based can the Parametric drive of implementation model, but shortcoming is the computing time that the renewal of its model and display need at substantial.Therefore, in final assembly model, remove the characteristics tree structure of each part, only retain final boundary model structure, significantly can improve the processing speed of assembling model.
The light-weight technologg method of the product model in above-described embodiment, can carry out the fusion treatment of assembling level.In large assembly model, according to the difference of application, the model of a lot of low-level is without the need to doing Subdividing Processing, and most assembling level only has and just can use on other occasions, therefore in the assembling of certain level not used time, can do fusion treatment to it.Greatly can save the space of model storage and the speed of model treatment like this.
The light-weight technologg method of the product model in above-described embodiment, can make the compression of model data.Towards the demand of large assembly models applying, remove original design a model middle with less than information, such as: feature, assembly relation etc., the memory data output of compression cad model, improves the processing speed of model.
In enterprise practical production run, during trim designs model, can face the problem such as large amount of complex feature, feature regeneration at any time, these problems will have a strong impact on the work efficiency of designer.The light-weight technologg method of the product model in above-described embodiment, propose a kind of lightweight mounting technology, in the process that model is assembled by parts, above Lightweight Technology and integration technology is adopted automatically to complete the lightweight of parts, model will assemble with light-weighted form, avoid above complex characteristic and feature regeneration issues, thus improve the work efficiency of designer.
As shown in Figure 4, step 301, extracts the master mould information of part; Step 302, judges the lightweight state of the model be set by the user, if need to merge, then carries out step 303,304, carries out the fusion treatment of assembly; As need lightweight be carried out, then carry out step 304, light-weight technologg is carried out to model; If user wishes to adopt master mould, then carry out step 306, keep ortho states; Step 307, adds assembling by the light weighed model after process.
According to the instruction of the decomposition display received, multiple part light weighed model of the light-weighted whole machine model of composition or component model are split and show.According to the instruction of the fusion display received, multiple part light weighed model of the light-weighted whole machine model of composition or component model are combined as entirety and show.
The light-weight technologg method of the product model that above-described embodiment provides, the lightweight problem of large assembly complex three-dimensional model can be solved, that is: towards the demand of different user, when guaranteeing light weighed model geometric configuration and topological structure and original design model consistency, light-weight technologg is carried out to the large assembly model of original design.The method has following characteristic:
1) Organization of Data of light weighed model is identical with original three-dimensional model, provides the assembly structure relation of product and the geometric topology information of part, supports piece surface attribute modification;
2) be supported on light weighed model and realize three-dimensional assembling, to facilitate the visual configuration function realizing product on this basis;
3) comprise models show data and geometric data, can realize the fast browsing of part and geological information is accurately inquired about;
4) eliminate the data redundancy problem in assembly, and data compression is carried out to model file, with representation of file part model little as far as possible, conveniently on network, carry out data exchange.
The light-weight technologg method of the product model provided by above-described embodiment, can effectively be reduced model file size, and accelerate model loading procedure, achieve the lightweight of model parts, fusion and assembling.In one embodiment, can carry out secondary development in the softwares such as Design of Dies software PRO/E or UG, realize the light-weight technologg method of product model of the present invention, interface as shown in Figure 5, the feature successfully can carrying out part is removed, and fundamentally stops feature orthogenesis.Fig. 6 A, 7A are the master patterns before lightweight, have a large amount of features to exist, Fig. 6 B, 7B are the light weighed model after system process, both maintain highly consistent in the information such as model outward appearance, but its feature, such as " stretching ", " hole ", features such as " grass are painted ", is all turned to " importing feature " by light weight, can meet the different demands of user.
Contrast by a large amount of model-test datas and with existing feature removing method, find that the light weight method that the application proposes is dominant on data compression ratio.Data shown in following table 1 and table 2 are as follows for carrying out light-weight technologg Comparative result for certain model:
Table 1-model carries out the data compression ratio before and after lightweight
The data compression ratio that another model of table 2-carries out before and after lightweight loads consuming time through verification experimental verification model, and testing machine adopts the configuration as following table 3:
| CPU | Pentium E5700 |
| Internal memory | 2G |
| Video card | Geforce9400 |
| Video memory | 256MB |
The hardware configuration list result contrast of table 3-testing machine is as following table 4 and table 5:
| Model file size (: MB) | Load time | |
| Master mould | 346 | 3m10s |
| Light weighed model | 210 | 1m40s |
Table 4-first model carries out the load time contrast table before and after light-weight technologg
| Model file size (: MB) | Load time | |
| Master mould | 660 | 5m15s |
| Light weighed model | 410 | 3m12s |
Table 5-second model carries out the load time contrast table before and after light-weight technologg
Table 5-the 3rd model carries out the load time contrast table before and after light-weight technologg
By above contrast test, it is effective for demonstrating light weight method proposed by the invention, can be good at the Production requirement meeting user.
In one embodiment, as shown in Figure 8, the invention provides a kind of light-weight technologg device of product model.Aspect of model acquiring unit 31 analytic product model also obtains the characteristic set of product model.Redundancy feature determining unit 32 is according to the deleted feature in the lightweight strategy determination characteristic set preset.Light weight model generation unit 33 can be deleted feature and delete and the geometry characteristic sum size characteristic of retained product model, generate the product light weighed model with product model with identical appearance structure.
In one embodiment, aspect of model acquiring unit 31 extracts the characteristic set of part model, comprising: part feature, assembly features and design feature.Redundancy feature determining unit 32 deletes part feature, assembly features, and retains the geometry characteristic sum size characteristic in part feature.Light weight model generation unit 33 generates the part light weighed model with part model with identical appearance structure.
Aspect of model acquiring unit 31 obtains the characteristic set of multiple part models of composition component model, comprising: part feature, assembly features and design feature.Redundancy feature determining unit 32 deletes the part feature, the assembly features that need the part model carrying out light-weight technologg respectively, and retains the geometry characteristic sum size characteristic in part feature.Light weight model generation unit 33 generates multiple part light weighed model with multiple part model with identical appearance structure, multiple part light weighed model is fused to entirety by the topological structure based on component model, and the fusion feature recorded between multiple part light weighed model, formation component light weighed model.
Whole machine model is divided into multiple part model or component model by whole machine model resolving cell 34.Light weight model generation unit 33 generates the multiple part light weighed model corresponding with multiple part model or component model or assembly light weighed model respectively, multiple part light weighed model or assembly light weighed model merge by the topological structure based on whole machine model, and the fusion feature recorded between multiple part light weighed model, generate complete machine light weighed model.
Whole machine model resolving cell 34 obtains multiple part models of composition whole machine model or component model.Aspect of model acquiring unit 31 extracts the characteristic set of multiple part model respectively, comprising: part feature, assembly features and design feature.Redundancy feature determining unit 32 deletes the part feature, the assembly features that need the part model carrying out light-weight technologg respectively, and retains the geometry characteristic sum size characteristic in part feature.Assembling model generation unit 35 generates multiple part light weighed model with multiple part model with identical appearance structure, multiple part light weighed model is assembled into entirety by the topological structure based on whole machine model or component model, and the assembly features recorded between multiple part light weighed model, generate light-weighted whole machine model or component model.
Multiple part light weighed model of the light-weighted whole machine model of composition or component model, according to the instruction of the decomposition display received, split and show by models show unit 36.According to the instruction of the fusion display received, multiple part light weighed model of the light-weighted whole machine model of composition or component model are combined as entirety and show.
The light-weight technologg method of the product model that above-described embodiment provides, characteristic processing can be carried out, only retain final boundary model structure, significantly can improve the processing speed of assembling model, and the fusion treatment of assembling level can be carried out, greatly can save the space of model storage and the speed of model treatment, automatically the lightweight of parts is completed, model will assemble with light-weighted form, avoid complex characteristic and feature regeneration issues, thus improve the work efficiency of designer.
Method and system of the present invention may be realized in many ways.Such as, any combination by software, hardware, firmware or software, hardware, firmware realizes method and system of the present invention.Said sequence for the step of method is only to be described, and the step of method of the present invention is not limited to above specifically described order, unless specifically stated otherwise.In addition, in certain embodiments, can be also record program in the recording medium by the invention process, these programs comprise the machine readable instructions for realizing according to method of the present invention.Thus, the present invention also covers the recording medium stored for performing the program according to method of the present invention.
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 (13)
1. a light-weight technologg method for product model, is characterized in that, comprising:
Analytic product model also obtains the characteristic set of described product model;
The deleted feature in described characteristic set is determined according to the lightweight strategy preset;
Described feature of deleting is deleted and the geometry characteristic sum size characteristic retaining described product model, generates the product light weighed model with described product model with identical appearance structure.
2. light-weight technologg method as claimed in claim 1, is characterized in that, described analytic product model the characteristic set obtaining described product model comprise:
Extract the characteristic set of part model, comprising: part feature, assembly features and design feature;
Described described feature of deleting deleted and retained the geometry characteristic sum size characteristic of described product model, to generate and product light weighed model that described product model has an identical appearance structure comprises:
Delete described part feature, described assembly features, and retain the geometry characteristic sum size characteristic in described part feature, generate the part light weighed model with described part model with identical appearance structure.
3. light-weight technologg method as claimed in claim 2, is characterized in that, described analytic product model the characteristic set obtaining described product model comprise::
Obtain the characteristic set of multiple part models of composition component model, comprising: part feature, assembly features and design feature;
Described described feature of deleting deleted and retained the geometry characteristic sum size characteristic of described product model, to generate and product light weighed model that described product model has an identical appearance structure comprises:
Delete respectively and need the described part feature of the part model carrying out light-weight technologg, described assembly features, and the geometry characteristic sum size characteristic retained in described part feature, generate multiple part light weighed model with described multiple part model with identical appearance structure;
Described multiple part light weighed model is fused to entirety by the topological structure based on described component model, and records the fusion feature between described multiple part light weighed model, formation component light weighed model.
4. light-weight technologg method as claimed in claim 3, is characterized in that, also comprise:
Whole machine model is divided into multiple part model or component model;
Generate the multiple part light weighed model corresponding with described multiple part model or component model or assembly light weighed model respectively;
Described multiple part light weighed model or assembly light weighed model merge by the topological structure based on described whole machine model, and record the fusion feature between described multiple part light weighed model, generate complete machine light weighed model.
5. light-weight technologg method as claimed in claim 1, is characterized in that, also comprise:
Obtain multiple part models of composition whole machine model or component model;
Extract the characteristic set of described multiple part model respectively, comprising: part feature, assembly features and design feature;
Delete respectively and need the described part feature of the part model carrying out light-weight technologg, described assembly features, and the geometry characteristic sum size characteristic retained in described part feature, generate multiple part light weighed model with described multiple part model with identical appearance structure;
Described multiple part light weighed model is assembled into entirety by the topological structure based on described whole machine model or component model, and records the assembly features between described multiple part light weighed model, generates light-weighted whole machine model or component model.
6. light-weight technologg method as claimed in claim 5, is characterized in that, also comprise:
According to the instruction of the decomposition display received, multiple part light weighed model of the described light-weighted whole machine model of composition or component model are split and show;
According to the instruction of the fusion display received, multiple part light weighed model of the described light-weighted whole machine model of composition or component model are combined as entirety and show.
7. light-weight technologg method as claimed in claim 6, is characterized in that:
Described part model, described component model, described whole machine model, described part light weighed model, described assembly light weighed model, described complete machine light weighed model are all three-dimensional model.
8. a light-weight technologg device for product model, is characterized in that, comprising:
Aspect of model acquiring unit, obtains the characteristic set of described product model for analytic product model;
Redundancy feature determining unit, for determining the deleted feature in described characteristic set according to the lightweight strategy preset;
Light weight model generation unit, for described feature of deleting being deleted and the geometry characteristic sum size characteristic retaining described product model, generates the product light weighed model with described product model with identical appearance structure.
9. light-weight technologg device as claimed in claim 8, is characterized in that, comprising:
Described aspect of model acquiring unit, also for extracting the characteristic set of part model, comprising: part feature, assembly features and design feature;
Described redundancy feature determining unit, also for deleting described part feature, described assembly features, and retains the geometry characteristic sum size characteristic in described part feature;
Described light weight model generation unit, also for generating the part light weighed model with described part model with identical appearance structure.
10. light-weight technologg device as claimed in claim 8, is characterized in that:
Described aspect of model acquiring unit, also for obtaining the characteristic set of multiple part models of composition component model, comprising: part feature, assembly features and design feature;
Described redundancy feature determining unit, also needs the described part feature of the part model carrying out light-weight technologg, described assembly features for deleting respectively, and retains the geometry characteristic sum size characteristic in described part feature;
Described light weight model generation unit, also for generating multiple part light weighed model with described multiple part model with identical appearance structure; Described multiple part light weighed model is fused to entirety by the topological structure based on described component model, and records the fusion feature between described multiple part light weighed model, formation component light weighed model.
11. light-weight technologg devices as claimed in claim 9, is characterized in that, comprising:
Whole machine model resolving cell, for being divided into multiple part model or component model by whole machine model;
Described light weight model generation unit, also for generating the multiple part light weighed model corresponding with described multiple part model or component model or assembly light weighed model respectively; Described multiple part light weighed model or assembly light weighed model merge by the topological structure based on described whole machine model, and record the fusion feature between described multiple part light weighed model, generate complete machine light weighed model.
12. light-weight technologg devices as claimed in claim 11, is characterized in that:
Described whole machine model resolving cell, also for obtaining multiple part models of composition whole machine model or component model;
Described aspect of model acquiring unit, also for extracting the characteristic set of described multiple part model respectively, comprising: part feature, assembly features and design feature;
Described redundancy feature determining unit, also needs the described part feature of the part model carrying out light-weight technologg, described assembly features for deleting respectively, and retains the geometry characteristic sum size characteristic in described part feature;
Described light-weight technologg device also comprises:
Assembling model generation unit, for generating multiple part light weighed model with described multiple part model with identical appearance structure; Described multiple part light weighed model is assembled into entirety by the topological structure based on described whole machine model or component model, and records the assembly features between described multiple part light weighed model, generates light-weighted whole machine model or component model.
13. light-weight technologg devices as claimed in claim 11, is characterized in that:
Multiple part light weighed model of the described light-weighted whole machine model of composition or component model, for the instruction according to the decomposition display received, are split and show by models show unit; According to the instruction of the fusion display received, multiple part light weighed model of the described light-weighted whole machine model of composition or component model are combined as entirety and show.
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