CN105975696B - Rule-based three-dimensional process dimension layout method - Google Patents
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Abstract
The present invention proposes a kind of rule-based three-dimensional process dimension layout method, using the three-dimensional process dimension in three-dimensional process model as research object, according to its feature, it carries out classification of dimension set and containment relationship judges, on this basis, with increment type size marking autoplacement method, the autoplacement of three-dimensional process dimension is realized.Present invention determine that relevant three-dimensional dimension placement logic, carries out classification of dimension set and containment relationship judges, the three-dimensional process dimension position automatically generated is made to meet the operating habit of technologist, improve the efficiency that technologist carries out technics institution；With increment type size marking autoplacement method, so that three-dimensional process dimension is laid out clean and tidy, specification, effectively reduce the workload of technologist, the visualization for three-dimensional process model provides technical foundation.
Description
Technical field
The present invention relates to the three-dimensional process dimension layout method in a kind of three-dimensional process designing system, especially one kind is based on
The three-dimensional process dimension layout method of rule.
Background technique
In three-dimensional process designing system, since the process of machine components is made of multiple orderly processes,
Blank is to the last formed before part from the first procedure of investment processing, and every procedure will form a mid-module,
The mid-module is known as process model.During generating three-dimensional process model, the three-dimensional process dimension of automatic marking is past
Toward random placement, it is unable to satisfy the layout requirements of size marking.
Document " engineering drawing size marking automatic layout algorithm and realization [J] Aeronautics Computing Technique, 2010,40 (02): 73-
76 " disclose a kind of size marking autoplacement implementation method.With existing horizontal size marks a large amount of in engineering drawing and vertically
Size marking is research object, carries out classification of dimension set to it according to its feature and containment relationship sorts, herein on basis,
Using increment type size marking automatic layout algorithm, the autoplacement of horizontal size mark with vertical size mark is realized.But this
Method is laid out for two-dimensional, the two-dimensional being only applicable in same plane, and for three-dimensional dimension, same model meeting
Be related to multiple mark planes, and size marking flat table give instructions in reply it is miscellaneous；The position coordinates of three-dimensional dimension relate to three directions, mobile
It is difficult to operate.Thus the mentioned method of document is difficult to realize the layout of three-dimensional process dimension.
Summary of the invention
In order to solve the problems existing in the prior art, the present invention proposes a kind of rule-based three-dimensional process dimension layout side
Method, according to its feature, carries out classification of dimension set and contains using the three-dimensional process dimension in three-dimensional process model as research object
Relationship judgement with increment type size marking autoplacement method, realizes the automatic cloth of three-dimensional process dimension on this basis
Office.
The technical solution of the present invention is as follows:
The rule-based three-dimensional process dimension layout method of described one kind, it is characterised in that: the following steps are included:
Step 1: extracting with the three-dimensional process dimension information in three-dimensional dimension mark process model；The three-dimensional process ruler
Very little information includes: the identification information of three-dimensional process dimension, the dimension text information of three-dimensional process dimension, the mark of three-dimensional process dimension
Infuse plane information, the size marking direction of the association face information of three-dimensional process dimension and three-dimensional process dimension；
Step 2: three-dimensional process dimension subset division:
Step 2.1: according to the size marking direction of three-dimensional process dimension, the size that size marking direction is parallel to each other being returned
For one kind, set of dimensions D={ D is obtained1,D2,…Di..., wherein DiIndicate one that size marking direction is parallel to each other three-dimensional work
Sequence size class；
Step 2.2: only retaining the three-dimensional process dimension that two association faces are plane in each three-dimensional process dimension class；
Step 2.3: by the three-dimensional process dimension in each three-dimensional process dimension class, according to the size value of three-dimensional process dimension
It arranges from big to small；
Step 3: three-dimensional process dimension inclusiveness subset being carried out by following steps to each three-dimensional process dimension class and is drawn
Point:
Step 3.1: the three-dimensional process dimension class D for entering this stepi, take DiIn first three-dimensional process dimension, and will
The size is put into set DikIn, k indicates kth time circulate operation；In DiIn the three-dimensional process dimension of residue in find by described the
Second three-dimensional process dimension that one three-dimensional process dimension contains entirely, then in DiIn the three-dimensional process dimension of residue in find by
The three-dimensional process dimension of third that described second three-dimensional process dimension contains entirely, successively finds, until the three-dimensional work searched out
Sequence size is DiIn the last one three-dimensional process dimension or the three-dimensional process dimension position contained entirely, three will found can not be found
Dimension process dimension is simultaneously sequentially placed into set DikIn；
Step 3.2: by set DikIn three-dimensional process dimension from DiMiddle deletion, if DiFor sky, then enter next step, if
It is not sky, then return step 3.1 carries out subsequent cycle operation；
Step 3.3: obtaining three-dimensional process dimension class DiInclusiveness subset { Di1,Di2,…Dik,…}；
Step 4: each three-dimensional process dimension class is proceeded as follows:
Step 4.1: in three-dimensional process dimension class DiInclusiveness subset in find out it is most containing three-dimensional process dimension number
Subset DijAs basic subset, DijIn three-dimensional process dimension be { dij1,dij2,…,dijn,…dijN, N is subset DijIn
Three-dimensional process dimension number；
Step 4.2: establishing three-dimensional process dimension class DiConllinear subset { Di1’,Di2’,…Din’,…,DiN', it will be three-dimensional
Process dimension { dij1,dij2,…,dijn,…dijNBy subscript serial number one-to-one correspondence be added to conllinear subset { Di1’,Di2’,…
Din’,…,DiN' in；
Step 4.3: to three-dimensional process dimension class DiInclusiveness subset in except bases subset its complementary subset carry out it is as follows
Operation:
For subset DikIn a certain three-dimensional process dimension diktIf diktWith all conllinear subset { Di1’,Di2’,…
Din ’,…,DiN' in three-dimensional process dimension without containment relationship, then by three-dimensional process dimension diktIt is added to conllinear subset Di1’
Or DiN' in, if diktWith conllinear subset Din' in three-dimensional process dimension have containment relationship, then by three-dimensional process dimension diktAddition
To conllinear subset Di(n+1) ’In；Circulation carries out this operation, until three-dimensional process dimension class DiInclusiveness subset in remove bases subset
Its complementary subset all three-dimensional process dimensions be added to conllinear subset until；
Step 5: each three-dimensional process dimension class is proceeded as follows:
By three-dimensional process dimension class DiAll three-dimensional process dimensions be all moved in same mark plane, according to conllinear son
Collect { Di1 ’,Di2’,…Din’,…,DiN' subscript serial number ecto-entad equidistant arrangement, wherein the three-dimensional in same conllinear subset
Process dimension is in away from the identical position of modal distance.
Further preferred embodiment, the rule-based three-dimensional process dimension layout method of described one kind, it is characterised in that: step
In rapid 1, the mark ID and three-dimensional process dimension that the identification information of three-dimensional process dimension includes three-dimensional process dimension are in three-dimensional modeling
Ident value in software；The dimension text information of three-dimensional process dimension includes the Dimension Types, size value, ruler of three-dimensional process dimension
Very little tolerance up and down, dimension text font size；The mark plane information of three-dimensional process dimension includes that three-dimensional process dimension is being marked
Infuse placement location, mark plane origin and the mark plane coordinate system in plane；The association face information of three-dimensional process dimension includes
The association face number of three-dimensional process dimension is associated with the mark ID in face.
Beneficial effect
The beneficial effects of the present invention are: determining relevant three-dimensional dimension placement logic, carrying out classification of dimension set and containing
Relationship judgement, so that the three-dimensional process dimension position automatically generated is met the operating habit of technologist, improve technologist into
The efficiency of row technics institution；With increment type size marking autoplacement method, three-dimensional process dimension is made to be laid out clean and tidy, specification,
The workload of technologist is effectively reduced, the visualization for three-dimensional process model provides technical foundation.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 general technological system figure
Fig. 2 three-dimensional size model
Fig. 3 three-dimensional process dimension placement logic
Half containment relationship of Fig. 3 (a)
Fig. 3 (b) not containment relationship
The full containment relationship of Fig. 3 (c)
Fig. 3 (d) label direction is parallel to each other but not in the size of same mark plane
The distribution of Fig. 3 (e) size delta formula
Process model before Fig. 4 layout
Fig. 5 size is laid out effect
Specific embodiment
The embodiment of the present invention is described below in detail, the embodiment of description is exemplary, it is intended to it is used to explain the present invention,
And it is not considered as limiting the invention.
Rule-based three-dimensional process dimension layout method in the present embodiment, comprising the following steps:
Step 1: extracting the three-dimensional process dimension information in the process model with three-dimensional dimension mark of certain procedure, such as
Shown in Fig. 2；The three-dimensional process dimension information includes: the identification information of three-dimensional process dimension, the size text of three-dimensional process dimension
This information, the mark plane information of three-dimensional process dimension, the ruler of the association face information of three-dimensional process dimension and three-dimensional process dimension
Very little label direction；
The present embodiment three-dimensional process dimension mainly includes following information:
PMI=id, tag, type, dim, upper_Dim, lower_Dim, font_Size, origin,
xformOrigin,xformOrientation,num_Geo,geo_ID1,geo_ID2,direction}
It is Tag value of the size under UG environment, these information composition that wherein id, which is the mark ID, tag of three-dimensional process dimension,
The identification information of three-dimensional process dimension；
Type is Dimension Types, mainly includes the common rulers such as vertical dimension, diameter dimension, Angular Dimension, parallel size
Very little type, dim are size value, and upper_Dim, lower_Dim are the upper and lower tolerance of size, and font_Size is dimension text word
Body size, these information form the dimension text information of three-dimensional process dimension；
Origin is placement location of the size in mark plane, and xformOrigin is mark plane origin,
XformOrientation is mark plane coordinate system, these information form the mark plane information of three-dimensional process dimension；
Um_Geo is the association face number of three-dimensional dimension, and geo_ID1, geo_ID2 are the mark in first, second association face
These information of ID form the association face information of three-dimensional process dimension；
Direction is size marking direction.
As shown in figure 4, the process model shares 10 three-dimensional process dimension D={ d1,d2,d3,d4,d5,d6,d7,d8,d9,
d10}。
Step 2: three-dimensional process dimension subset division: in order to carry out three-dimensional process dimension layout, giving process model and ruler
After very little information, whether classify in parallel to size first, in accordance with label direction, then each set of dimensions is filtered and
Sequence processing, the specific steps are as follows:
Step 2.1: according to the size marking direction of three-dimensional process dimension, the size that size marking direction is parallel to each other being returned
For one kind, set of dimensions D={ D is obtained1,D2,…Di..., wherein DiIndicate one that size marking direction is parallel to each other three-dimensional work
Sequence size class；
Step 2.2: since the present invention only handles the size that two association faces are plane, so in each three-dimensional process ruler
Only retain the three-dimensional process dimension that two association faces are plane in very little class；
Step 2.3: by the three-dimensional process dimension in each three-dimensional process dimension class, according to the size value of three-dimensional process dimension
It arranges from big to small.
In the present embodiment, three-dimensional process dimension subset division are as follows:
D={ D1,D2}
D1={ d5,d4,d3,d7,d2,d1}
D2={ d8,d9,d10,d6}
Step 3: three-dimensional process dimension inclusiveness subset being carried out by following steps to each three-dimensional process dimension class and is drawn
Point.By judging the containment relationship between size, size inclusiveness subset division is carried out, is laid for the rational deployment of size marking
Basis；Containment relationship is shown in Fig. 3, wherein (a) is half containment relationship, is (b) not containment relationship, (c) is full containment relationship.
Step 3.1: the three-dimensional process dimension class D for entering this stepi, take DiIn first three-dimensional process dimension, and will
The size is put into set DikIn, k indicates kth time circulate operation；In DiIn the three-dimensional process dimension of residue in find by described the
Second three-dimensional process dimension that one three-dimensional process dimension contains entirely, then in DiIn the three-dimensional process dimension of residue in find by
The three-dimensional process dimension of third that described second three-dimensional process dimension contains entirely, successively finds, until the three-dimensional work searched out
Sequence size is DiIn the last one three-dimensional process dimension or the three-dimensional process dimension position contained entirely, three will found can not be found
Dimension process dimension is simultaneously sequentially placed into set DikIn；
Step 3.2: by set DikIn three-dimensional process dimension from DiMiddle deletion, if DiFor sky, then enter next step, if
It is not sky, then return step 3.1 carries out subsequent cycle operation；
Step 3.3: obtaining three-dimensional process dimension class DiInclusiveness subset { Di1,Di2,…Dik,…}。
In the present embodiment, for three-dimensional process dimension class D1, find D1In first size d5The size of containing is d4, after
It is continuous to find d4The size of containing is d7, and so on, by D1It is divided into D1={ D11,D12,D13, wherein D11={ d5,d4,d7,
D12={ d3,d2, D13={ d1}；Similarly D2It is divided into D2={ D21,D22,D23, wherein D21={ d8,d9, D22={ d10, D23
={ d6}。
Step 4: each three-dimensional process dimension class is proceeded as follows:
Step 4.1: in three-dimensional process dimension class DiInclusiveness subset in find out it is most containing three-dimensional process dimension number
Subset DijAs basic subset, DijIn three-dimensional process dimension be { dij1,dij2,…,dijn,…dijN, N is subset DijIn
Three-dimensional process dimension number；Here the subscript serial number of each three-dimensional process dimension represents last size and is laid out in bases subset
Position；
Step 4.2: establishing three-dimensional process dimension class DiConllinear subset { Di1 ’,Di2’,…Din’,…,DiN', it will be three-dimensional
Process dimension { dij1,dij2,…,dijn,…dijNBy subscript serial number one-to-one correspondence be added to conllinear subset { Di1’,Di2’,…
Din’,…,DiN' in；Such as dij1It is put into Di1' in, dij2It is put into, Di2' in, dijnIt is put into Din' in；
Step 4.3: to three-dimensional process dimension class DiInclusiveness subset in except bases subset its complementary subset carry out it is as follows
Operation:
For subset DikIn a certain three-dimensional process dimension diktIf diktWith all conllinear subset { Di1’,Di2’,…
Din’,…,DiN ’In three-dimensional process dimension without containment relationship, then by three-dimensional process dimension diktIt is added to conllinear subset Di1’
Or DiN' in, if diktWith conllinear subset Din' in three-dimensional process dimension have containment relationship, then by three-dimensional process dimension diktAddition
To conllinear subset Di(n+1)' in；Circulation carries out this operation, until three-dimensional process dimension class DiInclusiveness subset in except basis son
Until all three-dimensional process dimensions of its complementary subset of collection are added to conllinear subset.
In the present embodiment, for three-dimensional process dimension class D1, bases subset D11, by D11In size { d5,d4,d7One
One correspondence is added to conllinear subset { D11’,D12’,D13' in, obtain D11'={ d5, D12'={ d4, D13'={ d7, base will be removed
Size outside plinth subset is added in conllinear subset one by one according to sexual intercourse is contained, and obtains finally according to the subset collinearly classified
D11'={ d5, D12'={ d4,d3, D13'={ d7,d2,d1, similarly, D2'={ D21’,D22', wherein D11'={ d8, D12’
={ d9,d10,d6}。
Step 5: each three-dimensional process dimension class is proceeded as follows:
By three-dimensional process dimension class DiAll three-dimensional process dimensions be all moved in same mark plane, according to conllinear son
Collect { Di1’,Di2’,…Din’,…,DiN' subscript serial number ecto-entad equidistant arrangement, i.e., with containment relationship two sizes
Distance should be constant, wherein three-dimensional process dimension in same conllinear subset is in away from the identical position of modal distance, according to
Secondary guarantee is non-interference.The present embodiment is as shown in Figure 5.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art are not departing from the principle of the present invention and objective
In the case where can make changes, modifications, alterations, and variations to the above described embodiments within the scope of the invention.
Claims (2)
1. a kind of rule-based three-dimensional process dimension layout method, it is characterised in that: the following steps are included:
Step 1: extracting with the three-dimensional process dimension information in three-dimensional dimension mark process model；The three-dimensional process dimension letter
Breath includes: the identification information of three-dimensional process dimension, and the mark of the dimension text information of three-dimensional process dimension, three-dimensional process dimension is flat
Face information, the size marking direction of the association face information of three-dimensional process dimension and three-dimensional process dimension；
Step 2: three-dimensional process dimension subset division:
Step 2.1: according to the size marking direction of three-dimensional process dimension, the size that size marking direction is parallel to each other being classified as one
Class obtains set of dimensions D={ D1,D2,…Di..., wherein DiIndicate one that size marking direction is parallel to each other three-dimensional process ruler
Very little class；
Step 2.2: only retaining the three-dimensional process dimension that two association faces are plane in each three-dimensional process dimension class；
Step 2.3: by the three-dimensional process dimension in each three-dimensional process dimension class, according to the size value of three-dimensional process dimension from big
To minispread；
Step 3: three-dimensional process dimension inclusiveness subset division is carried out by following steps to each three-dimensional process dimension class:
Step 3.1: the three-dimensional process dimension class D for entering this stepi, take DiIn first three-dimensional process dimension, and by the ruler
It is very little to be put into set DikIn, k indicates kth time circulate operation；In DiIn the three-dimensional process dimension of residue in find by described first
Second three-dimensional process dimension that three-dimensional process dimension contains entirely, then in DiIn the three-dimensional process dimension of residue in find it is described
The three-dimensional process dimension of third that second three-dimensional process dimension contains entirely, successively finds, until the three-dimensional process ruler searched out
Very little is DiIn the last one three-dimensional process dimension or the three-dimensional process dimension position contained entirely, the three-dimensional work that will be found can not be found
Sequence size is simultaneously sequentially placed into set DikIn；
Step 3.2: by set DikIn three-dimensional process dimension from DiMiddle deletion, if DiFor sky, then enter next step, if not
Sky, then return step 3.1 carries out subsequent cycle operation；
Step 3.3: obtaining three-dimensional process dimension class DiInclusiveness subset { Di1,Di2,…Dik,…}；
Step 4: each three-dimensional process dimension class is proceeded as follows:
Step 4.1: in three-dimensional process dimension class DiInclusiveness subset in find out containing three-dimensional the largest number of subsets of process dimension
DijAs basic subset, DijIn three-dimensional process dimension be { dij1,dij2,…,dijn,…dijN, N is subset DijIn three-dimensional
Process dimension number；
Step 4.2: establishing three-dimensional process dimension class DiConllinear subset { Di1’,Di2’,…Din’,…,DiN', by three-dimensional process
Size { dij1,dij2,…,dijn,…dijNBy subscript serial number one-to-one correspondence be added to conllinear subset { Di1’,Di2’,…Din’,…,
DiN' in；
Step 4.3: to three-dimensional process dimension class DiInclusiveness subset in proceed as follows except its complementary subset of bases subset:
For subset DikIn a certain three-dimensional process dimension diktIf diktWith all conllinear subset { Di1’,Di2’,…Din’,…,
DiN' in three-dimensional process dimension without containment relationship, then by three-dimensional process dimension diktIt is added to conllinear subset Di1' or DiN’
In, if diktWith conllinear subset Din' in three-dimensional process dimension have containment relationship, then by three-dimensional process dimension diktIt is added to conllinear
Subset Di(n+1)' in；Circulation carries out this operation, until three-dimensional process dimension class DiInclusiveness subset in remove bases subset its
Until all three-dimensional process dimensions of complementary subset are added to conllinear subset；
Step 5: each three-dimensional process dimension class is proceeded as follows:
By three-dimensional process dimension class DiAll three-dimensional process dimensions be all moved in same mark plane, according to conllinear subset
{Di1’,Di2’,…Din’,…,DiN' subscript serial number ecto-entad equidistant arrangement, wherein the three-dimensional work in same conllinear subset
Sequence size is in away from the identical position of modal distance.
2. a kind of rule-based three-dimensional process dimension layout method according to claim 1, it is characterised in that: in step 1,
The mark ID and three-dimensional process dimension that the identification information of three-dimensional process dimension includes three-dimensional process dimension are in 3 d modeling software
Ident value；The dimension text information of three-dimensional process dimension include the Dimension Types of three-dimensional process dimension, size value, size it is upper
Lower tolerance, dimension text font size；The mark plane information of three-dimensional process dimension includes three-dimensional process dimension in mark plane
On placement location, mark plane origin and mark plane coordinate system；The association face information of three-dimensional process dimension includes three-dimensional work
The association face number of sequence size is associated with the mark ID in face.
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