CN105956285A - Linear size marking regulation method oriented to deformation design - Google Patents
Linear size marking regulation method oriented to deformation design Download PDFInfo
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- CN105956285A CN105956285A CN201610296562.4A CN201610296562A CN105956285A CN 105956285 A CN105956285 A CN 105956285A CN 201610296562 A CN201610296562 A CN 201610296562A CN 105956285 A CN105956285 A CN 105956285A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
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- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/17—Mechanical parametric or variational design
Abstract
The invention discloses a linear size marking regulation method oriented to deformation design. The linear size marking regulation method comprises the following steps: establishing a basic characteristic element marking reference model knowledge base; carrying out basic characteristic element identification on a model which is not deformed; identifying the size marking way of the basic characteristic element, and finding the corresponding reference model of the knowledge base according to the size marking way; and after the model is deformed, according to the basic characteristic element marking reference model knowledge base, regulating the size of the basic characteristic element. The problems that a position between the size and the model is unreasonable and linear size marking is disordered are solved, a whole size regulation process does not need manual intervention, an automatic and effective solution is provided for size marking regulation after a part is subjected to the deformation design, deformation design efficiency is improved, and the linear size marking regulation method has a good application value.
Description
Technical field
The present invention relates to a kind of Linear Mark method of adjustment towards Variant Design.
Background technology
At present, Variant Design is conducted in-depth research by the most many experts and scholars, and has been achieved with
Some achievements.But, still there are many problems to need to solve, such as after product is carried out Variant Design,
Its labeling position can't adjust along with product model modification, has thus resulted in the mark of product model after modification
Note the relative position between position relative with model and size marking and a lot of serious un-reasonable phenomenon occurs.
It is manually to drag size to be adjusted that the personnel of being commonly designed solve this problem, and this has had a strong impact on modification
The efficiency of design, is one of current Variant Design key issue urgently to be resolved hurrily.
Summary of the invention
It is an object of the invention to propose a kind of Linear Mark method of adjustment towards Variant Design, solve
Linear Mark confusion problem after part Variant Design at present.The method can implementation model quickly and accurately
The automatic adjustment of size marking after modification.
A kind of Linear Mark method of adjustment towards Variant Design of the present invention, comprises the steps:
S1: set up basic feature cell cube mark reference model knowledge base；
S2: identify all basic feature cell cubes of component part；
The size marking mode of the basic feature cell cube of S3: identification, and find according to size marking mode and know
Know the corresponding reference model in storehouse；
S4: sizes all to model become several set of dimensions, Qi Zhongxiang according to the different demarcation in residing mark face
Isoplanar is a set of dimensions；
S5: to the size in set of dimensions, carry out classification of dimension set according to the label direction of size place plane,
Wherein label direction is all same size subset mutually；
S6: the size in size subset is carried out size relative position relation two-by-two and judges；
All sizes are divided into the constraint of several locus by S7: judge locus restriction relation
Set of relationship, is collectively referred to as size layout after the restriction relation of locus；
S8: the size of each size layout processed, eliminates site error, and records elimination position by mistake
Each size marking position coordinates of after the recovery；
S9: model modification；
S10: after acquisition modification, model is relative to the variable quantity of each size layout；
S11: the size of basic feature cell cube is adjusted according to feature unit body mark reference model knowledge base
Whole；
S12: according to the variable quantity acquired in S10, the size in each size layout of S8 is adjusted.
Further, the content of S1 basic feature cell cube mark reference model knowledge base includes:
S11. the various notation methods of basic feature cell cube；
S12. each reference model default size numerical value and extension line length；
S13. the extension line of reference model and the extension line conversion relational expression of entity.
Further, the basic feature cell cube in S1 mainly includes cuboid, cylinder, cone and one
A little user-defined cell cubes, are collectively referred to as basic feature cell cube in the present invention.
Further, S2 identifies the process of all basic feature cell cubes of component part, comprises the steps:
S21. first feature of model is obtained；
S22. the point, line, surface parameter of feature is obtained；
S23. by the point, line, surface parameters relationship recognition unit body of feature；
S24. obtain next feature, repeat S22 and S23, when without next feature, terminate to identify.
Further, the size marking mode of the basic feature cell cube that S3 identifies, and according to size marking mode
The process of search knowledge base correspondence reference model, comprises the steps:
S31. all sized objects of identified basic feature cell cube are obtained；
S32. the size tangent vector of sized objects, size normal vector are obtained；
S33. according to the size tangent vector of each size, each size of size normal vector calculated at basic feature list
The notation methods of unit's body；
S34. the corresponding reference model of knowledge base is searched for according to size marking mode.
Further, S6 carries out size relative position relation two-by-two and judges the size in size subset, described phase
It it is three kinds to position relation: adjacent not containment relationship, adjacent complete containment relationship, non-conterminous contain completely
Relation.
Further, locus restriction relation is judged by S7, and described locus restriction relation is divided into three
Kind: coordinate method size layout, chain method size layout, synthetic method size layout.
Further, after S10 acquisition modification, the variable quantity of model relative size layout, comprises the steps:
S101. before extracting modification, size layout dimension place set of dimensions is drawn from the size that size layout is nearest
Point coordinates；
S102. after obtaining modification, size layout place set of dimensions is sat from the size leading point that size layout is nearest
Mark；
S103. calculating the air line distance between S101 and S102 2, this distance is model relative size layout
Variable quantity.
Further, S11 marks reference model knowledge base to basic feature cell cube according to basic feature cell cube
Size is adjusted, and comprises the steps:
S111. the dimensional parameters D of first sized objects of basic feature cell cube is obtainedi；
S112. the default size numerical value of the knowledge base reference model correspondingly-sized of this basic feature cell cube is obtained
Dj, extension line length dj；
S113. extension line length d of entity size is calculated by the change type of knowledge basei, basic feature
The extension line of cell cube reference model is according to following with the extension line transformational relation of basic feature cell cube
Formula is changed:
Wherein DiFor entity size, DjFor the size of corresponding reference model, djFor the extension line length of reference model,
Wherein Dj、djNumerical value is default value；
S114. according to the extension line length to basic feature cell cube of the extension line length acquired in S113
It is adjusted.
Further, the size in each size layout of S8, according to the variable quantity acquired in S10, is carried out by S12
Adjust, comprise the steps:
S121. the scale coordinate position recorded after S8 completes is extracted；
S122. the model relative size layout change amount acquired in S10 is extracted；
S123. to the scale coordinate position in each size layout, move along model relative size layout change amount
Dynamic.
Advantages of the present invention and beneficial effect: the present invention is by setting up basic feature cell cube mark reference model
Knowledge base；Model before modification is carried out basic feature cell cube identification；The basic feature cell cube identified
Size marking mode, and the corresponding reference model of knowledge base is found according to size marking mode；After modification, root
According to basic feature cell cube mark reference model knowledge base, the size of basic feature cell cube is adjusted, has
The unreasonable problem in the position solved between size and model of effect, improves Variant Design efficiency, has very
Good using value.
The present invention by carrying out relative position between set of dimensions division, classification of dimension set, size to model before modification
The processing methods such as relation judgement, size layout identification, establish locus restriction relation between size, root
According to model relative size layout change amount after modification, the size in size layout is adjusted, effectively solves
The unreasonable problem in relative position between size with size, improves Variant Design efficiency, has well
Using value.
The Linear Mark method of adjustment towards Variant Design of the present invention effectively solves current part Variant Design
After Linear Mark confusion problem, whole size adjusting process, without manual intervention, sets for part modification
After meter, the adjustment of size marking provides solution automatic, efficient.
Accompanying drawing explanation
Fig. 1 is a kind of mark method of adjustment step block diagram towards Variant Design of the present invention；
Fig. 2 is the data content of S1 basic feature cell cube of the present invention mark reference model knowledge base；
Fig. 3 is the procedural block diagram that S2 of the present invention identifies all basic feature cell cubes of component part；
Fig. 4 is the size marking mode that S3 of the present invention identifies basic feature cell cube, and according to size marking side
The procedural block diagram of the corresponding reference model of formula search knowledge base；
Fig. 5 is the adjacent not containment relationship sketch of size two-by-two in S6 size subset of the present invention；
Fig. 6 is the adjacent complete containment relationship sketch of size two-by-two in S6 size subset of the present invention；
Fig. 7 is the non-conterminous complete containment relationship sketch of size two-by-two in S6 size subset of the present invention；
Fig. 8 is the coordinate method size layout sketch in the restriction relation of S7 locus of the present invention；
Fig. 9 is the chain method size layout sketch in the restriction relation of S7 locus of the present invention；
Figure 10 is the synthetic method size layout sketch in the restriction relation of S7 locus of the present invention；
Figure 11 is that S10 of the present invention obtains the method step frame of the variable quantity of model relative size layout after modification
Figure；
Figure 12 is that S11 of the present invention marks reference model knowledge base to basic feature list according to basic feature cell cube
The procedural block diagram that the size of unit's body is adjusted；
Figure 13 is the method step block diagram of size adjusting in S12 size layout of the present invention；
Figure 14 is certain physical model.
Detailed description of the invention
With embodiment, present invention is further described below in conjunction with the accompanying drawings, but not to the present invention
Limit.
A kind of Linear Mark method of adjustment towards Variant Design of the present invention, step block diagram as it is shown in figure 1,
Comprise the following steps:
S1: set up basic feature cell cube mark reference model knowledge base；
S2: identify all basic feature cell cubes of component part；
The size marking mode of the basic feature cell cube of S3: identification, and find according to size marking mode and know
Know the corresponding reference model in storehouse；
S4: sizes all to model become several set of dimensions, Qi Zhongxiang according to the different demarcation in residing mark face
Isoplanar is a set of dimensions；
S5: set of dimensions is carried out classification of dimension set according to the mask method of size place plane, wherein marks
Direction is all same size subset mutually；
S6: the size in size subset is carried out size relative position relation two-by-two and judges；
All sizes are divided into the constraint of several locus by S7: judge locus restriction relation
Set of relationship, is collectively referred to as size layout after the restriction relation of locus；
S8: the size of each size layout processed, eliminates site error, and records elimination position by mistake
Each size marking position coordinates of after the recovery；
S9: model modification；
S10: after acquisition modification, model is relative to the variable quantity of each size layout；
S11: the size of basic feature cell cube is adjusted according to feature unit body mark reference model knowledge base
Whole；
S12: according to the variable quantity acquired in S10, the size in each size layout of S8 is adjusted.
Further, the content of S1 basic feature cell cube mark reference model knowledge base includes:
S11. the various notation methods of basic feature cell cube；
S12. each reference model default size numerical value and extension line length；
S13. the extension line of reference model and the extension line conversion relational expression of entity.
Further, S2 identifies the process of all basic feature cell cubes of component part, comprises the steps:
S21. first feature of model is obtained；
S22. the point, line, surface parameter of feature is obtained；
S23. by the point, line, surface parameters relationship recognition unit body of feature；
S24. obtain next feature, repeat S22 and S23, when without next feature, terminate to identify.
As in figure 2 it is shown, the content of S1 basic feature cell cube mark reference model knowledge base includes:
S11. the various notation methods of basic feature cell cube；
S12. each reference model default size numerical value and extension line length；
S13. the extension line of reference model and the extension line conversion relational expression of entity.
As it is shown on figure 3, S2 identifies the process of all basic feature cell cubes of component part, including walking as follows
Rapid:
S21. first feature of model is obtained；
S22. the point, line, surface parameter of feature is obtained；
S23. by the point, line, surface parameters relationship recognition unit body of feature；
S24. obtain next feature, repeat S22 and S23, when without next feature, terminate to identify.
As shown in Figure 4, the size marking mode of the basic feature cell cube that S3 identifies, and according to size marking
Mode searches for the process of knowledge base correspondence reference model, comprises the steps:
S31. all sized objects of identified basic feature cell cube are obtained；
S32. the size tangent vector of sized objects, size normal vector are obtained；
S33. according to the size tangent vector of each size, each size of size normal vector calculated at basic feature list
The notation methods of unit's body；
S34. the corresponding reference model of knowledge base is searched for according to size marking mode.
As shown in Fig. 5,6,7, S6 carries out size relative position relation two-by-two and sentences the size in size subset
Disconnected, described relative position relation is divided into three kinds: adjacent not containment relationship, adjacent complete containment relationship, non-phase
Adjacent containment relationship sketch completely.
As shown in Figure 8,9, 10, locus restriction relation is judged by S7, and described locus retrains
Relation is divided into three kinds: coordinate method size layout, chain method size layout, three kinds of layouts of synthetic method size layout
Relation sketch.
As shown in figure 11, after S10 acquisition modification, the variable quantity of model relative size layout, comprises the steps:
S101. before extracting modification, size layout dimension place set of dimensions is drawn from the size that size layout is nearest
Point coordinates；
S102. after obtaining modification, size layout place set of dimensions is sat from the size leading point that size layout is nearest
Mark；
S103. calculating the air line distance between S101 and S102 2, this distance is model relative size layout
Variable quantity.
As shown in figure 12, S11 marks reference model knowledge base to basic feature list according to basic feature cell cube
The size of unit's body is adjusted, and comprises the steps:
S111. the dimensional parameters D of first sized objects of basic feature cell cube is obtainedi；
S112. the default size numerical value of the knowledge base reference model correspondingly-sized of this basic feature cell cube is obtained
Dj, extension line length dj；
S113. extension line length d of entity size is calculated by the change type of knowledge basei, basic feature
The extension line of cell cube reference model is according to following with the extension line transformational relation of basic feature cell cube
Formula is changed:
Wherein DiFor entity size, DjFor the size of corresponding reference model, djFor the extension line length of reference model,
Wherein Dj、djNumerical value is default value；
S114. according to the extension line length to basic feature cell cube of the extension line length acquired in S113
It is adjusted.
As shown in figure 13, S12 is according to the variable quantity acquired in S10, to the size in each size layout of S8
It is adjusted, comprises the steps:
S121. the scale coordinate position recorded after S8 completes is extracted；
S122. the model relative size layout change amount acquired in S10 is extracted；
S123. to the scale coordinate position in each size layout, move along model relative size layout change amount
Dynamic.
It is embodied as step below according to Figure 14 institute representation model method used to the present invention to illustrate:
(1) basic feature cell cube mark reference model knowledge base is set up；
(2) identify all basic feature cell cubes of composition model, show that in Figure 14, model is two by identification
Individual basic feature cell cube, respectively cylinder and cone；
(3) the size marking mode of the basic feature cell cube identified, and search for according to size marking mode and know
Know storehouse correspondence reference model.For cone dimension D1, its notation methods is that label direction is perpendicular to taper seat,
With D1Notation methods search knowledge base correspondence cone reference model.For cylinder dimensions D2、D3, cylinder
Dimension D2Notation methods be that label direction is perpendicular to the face of cylinder, cylinder dimensions D3Notation methods for mark
It is oriented parallel to circular section, with D2、D3Notation methods search knowledge base Correspondent cy linder body reference model；
(4) model shown in Figure 14 is carried out set of dimensions division, D1、D2It is a set of dimensions, D3It it is a chi
Very little collection；
(5) set of dimensions in step (4) is carried out classification of dimension set, D1、D2It is a size subset, D3For
One size subset；
(6) size in size subset in step (5) carries out size relative position relation two-by-two judge, D1、
D2For adjacent not containment relationship, D3There is not relative position relation in place size subset；
(7) relative position relation drawn in step (6) is carried out locus restriction relation to judge,
Draw D1、D2For chain method size layout relationship；
(8) size of each size layout is processed, eliminate site error, make D1、D2Dimension line is put down
OK, eliminate site error, and record size marking D1、D2Position coordinates；
(9) model modification；
(10) after obtaining modification, model is relative to D1、D2The variable quantity of place size layout, extracts chi before modification
From the size leading point coordinate that size layout is nearest in the set of dimensions of very little layout dimension place, obtain size after modification
From the size leading point coordinate that size layout is nearest in the set of dimensions of layout place, according to two obtained extractions
Point coordinates calculates the air line distance before and after modification between the size leading point that size layout is nearest, and this distance is
The variable quantity of model relative size layout；
(11) according to feature unit body mark reference model knowledge base, the size of basic feature cell cube is carried out
Adjust.First the dimensional parameters of three sizes, the corresponding mark reference that extraction step (3) draws afterwards are obtained
Reference model default size numerical value in models repository and extension line length, according to conversion relational expressionCalculate physical model extension line length, be finally as the criterion to physical model three with this length
Individual dimension D1、D2、D3Extension line length be adjusted；
(12) size adjusting distributing adjustment is finally carried out, the dimension D that extraction step (8) is recorded1、D2's
Position coordinates, the model relative size layout change amount acquired in extraction step (10), to step (8) institute
The dimension D of record1、D2Position coordinates, move along model relative size layout change amount, draw need adjust
Whole to labeling position coordinate points, it is labeled afterwards adjusting.
Claims (10)
1., towards a Linear Mark method of adjustment for Variant Design, it is characterized in that, comprise the steps:
S1: set up basic feature cell cube mark reference model knowledge base；
S2: identify all basic feature cell cubes of component part；
The size marking mode of the basic feature cell cube of S3: identification, and find knowledge base according to size marking mode
Corresponding reference model；
S4: sizes all to model become several set of dimensions according to the different demarcation in residing mark face, the most identical flat
Face is a set of dimensions；
S5: to the size in set of dimensions, carry out classification of dimension set according to the label direction of size place plane, its
Middle label direction is all same size subset mutually；
S6: the size in size subset is carried out size relative position relation two-by-two and judges；
All sizes are divided into several locus restriction relations by S7: judge locus restriction relation
Set, is collectively referred to as size layout after the restriction relation of locus；
S8: the size of each size layout is processed, eliminate site error, and record elimination site error after
Each size marking position coordinates；
S9: model modification；
S10: after acquisition modification, model is relative to the variable quantity of each size layout；
S11: the size of basic feature cell cube is adjusted according to feature unit body mark reference model knowledge base；
S12: according to the variable quantity acquired in S10, the size in each size layout of S8 is adjusted.
Linear Mark method of adjustment towards Variant Design the most according to claim 1, is characterized in that,
Basic feature cell cube in S1 mainly includes cuboid, cylinder, cone and some User Defineds
Cell cube.
Linear Mark method of adjustment towards Variant Design the most according to claim 1, is characterized in that,
The content of S1 basic feature cell cube mark reference model knowledge base includes:
S11. the various notation methods of basic feature cell cube；
S12. each reference model default size numerical value and extension line length；
S13. the extension line of reference model and the extension line conversion relational expression of entity.
Linear Mark method of adjustment towards Variant Design the most according to claim 1, is characterized in that,
S2 identifies the process of all basic feature cell cubes of component part, comprises the steps:
S21. first feature of model is obtained；
S22. the point, line, surface parameter of feature is obtained；
S23. by the point, line, surface parameters relationship recognition unit body of feature；
S24. obtain next feature, repeat S22 and S23, when without next feature, terminate to identify.
Linear Mark method of adjustment towards Variant Design the most according to claim 1, is characterized in that,
The size marking mode of the basic feature cell cube that S3 identifies, and search for knowledge base pair according to size marking mode
Answer the process of reference model, comprise the steps:
S31. all sized objects of identified basic feature cell cube are obtained；
S32. the size tangent vector of sized objects, size normal vector are obtained；
S33. according to the size tangent vector of each size, each size of size normal vector calculated in basic feature cell cube
Notation methods；
S34. the corresponding reference model of knowledge base is searched for according to size marking mode.
Linear Mark method of adjustment towards Variant Design the most according to claim 1, is characterized in that,
S6 carries out size relative position relation two-by-two and judges the size in size subset, and described relative position relation divides
It it is three kinds: adjacent not containment relationship, adjacent complete containment relationship, non-conterminous complete containment relationship.
Linear Mark method of adjustment towards Variant Design the most according to claim 1, is characterized in that,
Locus restriction relation is judged by S7, and described locus restriction relation is divided into three kinds: coordinate method chi
Very little layout, chain method size layout, synthetic method size layout.
Linear Mark method of adjustment towards Variant Design the most according to claim 1, is characterized in that,
After S10 acquisition modification, the variable quantity of model relative size layout, comprises the steps:
S101. before extracting modification, size layout dimension place set of dimensions is sat from the size leading point that size layout is nearest
Mark；
S102. obtain after modification in the set of dimensions of size layout place from the size leading point coordinate that size layout is nearest；
S103. calculating the air line distance between S101 and S102 2, this distance is model relative size layout change
Amount.
Linear Mark method of adjustment towards Variant Design the most according to claim 1, is characterized in that,
The size of basic feature cell cube is adjusted by S11 according to basic feature cell cube mark reference model knowledge base
Whole, comprise the steps:
S111. the dimensional parameters D of first sized objects of basic feature cell cube is obtainedi；
S112. the default size numerical value D of the knowledge base reference model correspondingly-sized of this basic feature cell cube is obtainedj, chi
Very little boundary line length dj；
S113. extension line length d of entity size is calculated by the change type of knowledge basei, basic feature unit
The extension line of body reference model is according to below equation with the extension line transformational relation of basic feature cell cube
Change:
Wherein DiFor entity size, DjFor the size of corresponding reference model, djFor the extension line length of reference model,
Wherein Dj、djNumerical value is default value；
S114. according to the extension line length acquired in S113, the extension line length of basic feature cell cube is carried out
Adjust.
Linear Mark method of adjustment towards Variant Design the most according to claim 1, is characterized in that,
Size in each size layout of S8, according to the variable quantity acquired in S10, is adjusted, including such as by S12
Lower step:
S121. the scale coordinate position recorded after S8 completes is extracted；
S122. the model relative size layout change amount acquired in S10 is extracted；
S123. to the scale coordinate position in each size layout, move along model relative size layout change amount.
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