CN108121862A - A kind of engineering drawing automatic marking method based on three-dimensional geometry feature - Google Patents
A kind of engineering drawing automatic marking method based on three-dimensional geometry feature Download PDFInfo
- Publication number
- CN108121862A CN108121862A CN201711329975.9A CN201711329975A CN108121862A CN 108121862 A CN108121862 A CN 108121862A CN 201711329975 A CN201711329975 A CN 201711329975A CN 108121862 A CN108121862 A CN 108121862A
- Authority
- CN
- China
- Prior art keywords
- face
- threedimensional model
- mark
- view
- broken
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000004458 analytical method Methods 0.000 claims abstract description 7
- 238000013507 mapping Methods 0.000 claims abstract description 7
- 230000008707 rearrangement Effects 0.000 claims abstract description 4
- 238000013519 translation Methods 0.000 claims description 14
- 238000012545 processing Methods 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 3
- 238000000151 deposition Methods 0.000 claims 1
- 238000012986 modification Methods 0.000 abstract description 6
- 230000004048 modification Effects 0.000 abstract description 6
- 238000012216 screening Methods 0.000 abstract 1
- 238000013461 design Methods 0.000 description 14
- 230000000694 effects Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 3
- 238000002372 labelling Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000012938 design process Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
-
- 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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T19/00—Manipulating 3D models or images for computer graphics
- G06T19/20—Editing of 3D images, e.g. changing shapes or colours, aligning objects or positioning parts
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2219/00—Indexing scheme for manipulating 3D models or images for computer graphics
- G06T2219/004—Annotating, labelling
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Theoretical Computer Science (AREA)
- General Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Software Systems (AREA)
- Computer Graphics (AREA)
- Architecture (AREA)
- Computational Mathematics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Pure & Applied Mathematics (AREA)
- Evolutionary Computation (AREA)
- Processing Or Creating Images (AREA)
Abstract
The present invention relates to a kind of engineering drawing automatic marking method based on three-dimensional geometry feature, including：Two dimension view data and three-dimensional modeling data are parsed, establish mapping relations therebetween；Chamfering analysis is carried out to threedimensional model, obtains the fillet surface in threedimensional model；It according to the accurate broken face of area screening, according to the normalized relationship in the broken face of standard face adjacent thereto, screens broken face and is filtered, retain plane, cylindrical surface, the information of circular conical surface in threedimensional model；Line in two dimension view corresponding to face in the threedimensional model of reservation is labeled, then perform deduplication operation and according to position relationship to markup information into rearrangement.After carrying out automatic marking using the system, for view by automatic putting, picture frame information by Auto-writing, the size on view being capable of automatic marking.It can greatly reduce and mistake is generated due to personnel are tired, and then reduce and link up, modification cost.
Description
Technical field
The present invention relates to engineering drawing technique fields, and in particular to a kind of engineering drawing based on three-dimensional geometry feature is marked automatically
Injecting method.
Background technology
Most mold design enterprises domestic at present are converted to 3D design patterns by 2D designs, but most enterprises are in mould
Engineering drawing needed for tool processing is still essential.Therefore, designer still wants fabrication after 3D designs are completed
Figure, groundwork is exactly to mark the size of part on drawing.Some Mould Enterprises this task is even accounted in design process
60% workload.Domestic project icon note is generally using mark or semi-automatic dimension model by hand at present.Mark needs to select by hand
It selects each size to be marked and specifies labeling position；Semi-automatic mark can mark hole and its profile information in view,
Minutia (such as chamfering, groove) can not be marked.
The content of the invention
The present invention provides a kind of engineering drawing based on three-dimensional geometry feature certainly for technical problem in the prior art
Dynamic mask method, directly parses three-dimensional modeling data, the lines in two dimension view is managed, can obtain more detailed
Related information, and accurately judge which lines needs is labeled in two dimension view with reference to mold design knowledge, Ke Yiji
Big reduction generates mistake due to personnel are tired, and then reduces and link up, modification cost.
The technical solution that the present invention solves above-mentioned technical problem is as follows：A kind of engineering drawing based on three-dimensional geometry feature is automatic
Mask method comprises the following steps：
Step 1, two dimension view data and three-dimensional modeling data are parsed, and is converted into mark required information caching
It is compared into memory, while by two dimension view data and three-dimensional modeling data, establishes mapping relations therebetween；
Step 2, chamfering analysis is carried out to threedimensional model, obtains the fillet surface in threedimensional model；
Step 3, other faces in threedimensional model in addition to plane, cylindrical surface, circular conical surface are filtered out according to area, while screens standard
Broken face according to the normalized relationship in the broken face of standard face adjacent thereto, is screened broken face and is filtered, and retains flat in threedimensional model
Face, cylindrical surface, the information of circular conical surface；
Step 4, the line in the two dimension view corresponding to the face in the threedimensional model of reservation is labeled, then performs and go
Again operation and according to position relationship to markup information into rearrangement.
The beneficial effects of the invention are as follows：After carrying out automatic marking according to the system, view is by automatic putting, picture frame information
By Auto-writing, the size on view being capable of automatic marking.It is disposable raw that the part of Mould Enterprise more than 60% will not have to modification
Into drawing, 30% part only needs slightly to adjust labeling position to reach beautiful arrangement effect, and only 10% might have
It omits, it is necessary to which user's operation bidirectional supplements marked content.
Based on the above technical solutions, the present invention can also be improved as follows.
Further, the step 1 includes：
Screen the straightway and circular arc in two dimension view；
Travel through threedimensional model under solid side information, and in the form of point set express after caching into memory in；
By matrixing by the point set coordinate projection of threedimensional model into two dimension view coordinate system；
Object in two dimension view is compared with the position relationship of three-dimensional point set coordinate projection, and by position relationship one
Object and the point set projection of cause are preserved into mapping table；
Wherein, the point set is to carry out decile, the collection that Along ent is formed according to certain amount to the side under threedimensional model
It is point set to close；To the X/Y/Z coordinates of each point is concentrated to ask weighting respectively, be point set center.
Advantageous effect using above-mentioned further scheme is：Using Data cache technology, by all sides in threedimensional model
Information cached after disposably solving with a structure set into memory, and is sorted by coordinate and improve search efficiency.It is complicated
It spends for M*P+M^2+N*O*M*log2 (M), M*P is the complexity for calculating all side features of threedimensional model, and M^2 is by three-dimensional memory
Data are ranked up the complexity of index, N*O*M*log (M) be the method indexed by memory search two-dimensional environment lower curve with
The corresponding complexity in three-dimensional environment side.O is single curve dispersed number, and setting value is 10 in system at present.With original algorithm phase
Than the time of M*P+M^2 can almost be ignored less than the 2/N of total time；That need to compare in N*O*M*log2 (M) is O*
Log2 (M) and P's takes, and equally takes the model reference on 1000 sides, and O*log2 (M) occupies about 1e4 times calculating, single calculation
About 1e-5S is taken, is improved compared to conventional method of analysis efficiency close to 10 times.Amount to evaluation time only 1.5S.
Further, the step 2 comprises the following steps：
Travel through all side informations under threedimensional model；
If there are the while C of the proximal surface B in A, while arbitrary point X on A can while C or side C the extended line led of second order on look for
To corresponding points X ' so that while A X points tangential direction with while C it is identical in the tangential direction of X ' points, and X-X ' directions are perpendicular to cutting
Line direction, then it is assumed that face B may be chamfering, will further be judged：
If face B is plane, then it is assumed that it is bevelling；
If each point radius of curvature is identical on the B of face, and after doing transversal at an arbitrary position, the angle for obtaining circular arc is consistent and press from both sides
Angle is less than 135 °, then it is assumed that face B is rounded corner.
Advantageous effect using above-mentioned further scheme is：The accuracy of chamfering judging result is to influence automatic marking effect
An important factor for, if without chamfering decision rule, all position dimensionings there are chamfering have not in place and repeat to mark
The situation of note, this point are also one of semi-automatic marking software the main reason for can not accurately marking minutia, using it is above-mentioned into
One step scheme can improve the accuracy of chamfering judgement.
Further, the step 3 comprises the following steps：
Step 301, the appearance and size of threedimensional model is calculated；
Step 302, trigonometric ratio processing is carried out to each face of threedimensional model and calculates the area in each face, if certain one side
Area is more than the appearance and size * N, then according to face information, filter out except in threedimensional model in addition to plane, cylindrical surface, circular conical surface
Other faces, only retain threedimensional model in plane, cylindrical surface and circular conical surface information；
If the area of certain one side is less than appearance and size * N, by the face conclude subject to broken face, if certain surely broken face is non-flat
Face is then summarized as broken face, refers to not as mark, then the remaining broken face of standard is further judged；Wherein N is experience system
Number；
Step 304, all adjacent surfaces in the broken face of standard are searched, if a certain adjacent surface is plane and normal direction and the standard are broken
The normal direction in face is consistent, then is a complete plane by the broken face of standard and adjacent surface suture；If the normal direction in the broken face of standard with
The normal direction of all adjacent surfaces is inconsistent or the adjacent surface in the broken face of standard is on-plane surface, then is summarized as the broken plane broken
Mark reference is not done in face；
Step 305, iteration performs step 304, until the broken face of all standards is judged to finish.
Advantageous effect using above-mentioned further scheme is：3-D geometric model data often there are some small curved surfaces,
Incoherent line segment can be formed under these curved surface projections to 2D environment.The actually this kind of curved surface overwhelming majority is that need not mark
's.The part that only a few needs mark is also required to again mark after incoherent line segment serialization, otherwise can form multiterminal mark
Note does not meet actual mark requirement.
Since 2D marks belong to linear dimension, Nonlinear Curved feature is without mark, therefore the curved surface of all marks belongs to
In plane or cylindrical surface/circular conical surface.Cylindrical surface/circular conical surface is labeled generally as hole or R angles, and other positions are not examined
Consider.The mark in hole needs to consider the integrality in hole, therefore broken face is not in limit of consideration.
Further, the step 4 comprises the following steps：
Step 401, distinguished according to view, hole mark is preferentially labeled on front view, can not mark portion completely on front view
Divide and concentrate on other individual views；
Step 402, X-coordinate is marked and is divided into top half according to the Y value and the relativeness at view center of mark point
Mark is marked with the latter half；Y-coordinate mark is divided into left side according to the X values and the relativeness at view center of mark point
Point and right half part；
Step 403, markup information on front view is demarcated successively, is handed over if current markup information exists with a upper markup information
Fork then translates current markup information, if generating new intersection after translation, current markup information is translated again
Operation, until being generated without new intersection；If translation predetermined number of times after there are still intersect, by the mark move to other views into
Rower is noted；
Step 404, for non-front view, to currently marking if current markup information intersects with the presence of a upper markup information
Information is translated, if generating new intersection after translation, translation again is translated to current markup information, until nothing
Intersect generation or translation number reaches predetermined number of times.
Description of the drawings
Fig. 1 is a kind of engineering drawing automatic marking method flow based on three-dimensional geometry feature provided in an embodiment of the present invention
Figure.
Specific embodiment
The principle of the present invention and feature are described below in conjunction with example, the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the present invention.
As shown in Figure 1, a kind of engineering drawing automatic marking method based on three-dimensional geometry feature, comprises the following steps：
Step 1, two dimension view data and three-dimensional modeling data are parsed, and is converted into mark required information caching
It is compared into memory, while by two dimension view data and three-dimensional modeling data, establishes mapping relations therebetween；
The present invention is carried out all side informations in threedimensional model after disposably solving with point set using Data cache technology
Structure is cached into memory, and is sorted by coordinate and improved search efficiency.Its complexity is M*P+M^2+N*O*M*log2 (M),
M*P is the complexity for calculating all side features of threedimensional model, and M^2 is the complexity that three-dimensional internal storage data is ranked up to index,
N*O*M*log (M) is that the method indexed by memory searches two-dimensional environment lower curve complexity corresponding with three-dimensional environment side.O
For single curve dispersed number, setting value is 10 in system at present.Compared with original algorithm, time of M*P+M^2 less than it is total when
Between 2/N, can almost ignore；Need to compare in N*O*M*log2 (M) is taking for O*log2 (M) and P, is equally taken
The model reference on 1000 sides, O*log2 (M) occupy about 1e4 times calculating, and single calculation takes about 1e-5S, compared to conventional analysis
Method efficiency is improved close to 10 times.Amount to evaluation time only 1.5S.
Specifically, the step 1 includes：
Screen the straightway and circular arc in two dimension view；
Travel through threedimensional model under solid side information, and in the form of point set express after caching into memory in；
By matrixing by the point set coordinate projection of threedimensional model into two dimension view coordinate system；
Object in two dimension view is compared with the position relationship of three-dimensional point set coordinate projection, and by position relationship one
Object and the point set projection of cause are preserved into mapping table；
Wherein, the point set is to carry out decile, the collection that Along ent is formed according to certain amount to the side under threedimensional model
It is point set to close；To the X/Y/Z coordinates of each point is concentrated to ask weighting respectively, be point set center.
Step 2, chamfering analysis is carried out to threedimensional model, obtains the fillet surface in threedimensional model；
The accuracy of the judgement of chamfering is an important factor for influencing automatic marking effect, if without chamfering decision rule, is owned
The position dimensioning that there is a situation where chamfering has not in place and repeat mark, this point be also semi-automatic marking software without
Method accurately marks one of the main reason for minutia.
Chamfering in mold design is generally divided into rounded corner (R angles) chamfer (C angles), can be divided into again with C angles for R angles
Interior R angles and outer R angles, interior C angles and outer C angles.It is understood for the geometrical Characteristics Analysis of above-mentioned 4 type, in chamfering position before chamfering
Place is a line A.What opposite side A was obtained after being scanned along straight line is the angle of falling C, and what opposite side A was obtained after being scanned along circular arc is the angle of falling R.
According to the characteristic scanned, the side of chamfering both sides must be that Local Phase is same.Local Phase is same rather than identical
It is because the endpoint location on two sides is inconsistent.If but extended along its endpoint according to 3 order derivatives, extended line should be in correspondence
Bian Shangneng finds identical point.
It therefore can be by judging the local similarity on side to determine whether being scanned as a result, projection further according to R angles
It is circular arc, C angular projections are that straight line this characteristic judges whether to belong to R angles or C angles.
Specifically, the step 2 comprises the following steps：
Travel through all side informations under threedimensional model；
If there are the while C of the proximal surface B in A, while arbitrary point X on A can while C or side C the extended line led of second order on look for
To corresponding points X ' so that while A X points tangential direction with while C it is identical in the tangential direction of X ' points, and X-X ' directions are perpendicular to cutting
Line direction, then it is assumed that face B may be chamfering, will further be judged：
If face B is plane, then it is assumed that it is bevelling；
If each point radius of curvature is identical on the B of face, and after doing transversal at an arbitrary position, the angle for obtaining circular arc is consistent and press from both sides
Angle is less than 135 °, then it is assumed that face B is rounded corner.
Step 3, other faces in threedimensional model in addition to plane, cylindrical surface, circular conical surface are filtered out according to size, sieved simultaneously
Accurate broken face is selected, according to the normalized relationship in the broken face of standard face adjacent thereto, broken face is filtered out and is filtered, retains threedimensional model
In plane, cylindrical surface, the information of circular conical surface；
3-D geometric model data can be formed under these curved surface projections to 2D environment and do not connected often there are some small curved surfaces
The line segment passed through.The actually this kind of curved surface overwhelming majority need not mark.The part that marks of only a few needs be also required to by
It is marked again after incoherent line segment serialization, otherwise can form multistage mark, do not meet actual mark requirement.
Since 2D marks belong to linear dimension, Nonlinear Curved feature is without mark, therefore the curved surface of all marks belongs to
In plane or cylindrical surface/circular conical surface.Cylindrical surface/circular conical surface is labeled generally as hole or R angles, and other positions are not examined
Consider.The mark in hole needs to consider the integrality in hole, therefore broken face is not in limit of consideration.
Specifically, the step 3 comprises the following steps：
Step 301, the appearance and size of threedimensional model is calculated；
Step 302, trigonometric ratio processing is carried out to each face of threedimensional model and calculates the area in each face, if certain one side
Area is more than the appearance and size * N, then according to face information, filter out except in threedimensional model in addition to plane, cylindrical surface, circular conical surface
Other faces, only retain threedimensional model in plane, cylindrical surface and circular conical surface information；
If the area of certain one side is less than appearance and size * N, by the face conclude subject to broken face, if certain surely broken face is non-flat
Face is then summarized as broken face, refers to not as mark, then the remaining broken face of standard is further judged；Wherein N is experience system
Number；
Step 304, all adjacent surfaces in the broken face of standard are searched, if a certain adjacent surface is plane and normal direction and the standard are broken
The normal direction in face is consistent, then is a complete plane by the broken face of standard and adjacent surface suture；If the normal direction in the broken face of standard with
The normal direction of all adjacent surfaces is inconsistent or the adjacent surface in the broken face of standard is on-plane surface, then is summarized as the broken plane broken
Mark reference is not done in face；
Step 305, iteration performs step 304, until the broken face of all standards is judged to finish.
Step 4, the line in the two dimension view corresponding to the face in the threedimensional model of reservation is labeled, then performs and go
Again operation and according to position relationship to markup information into rearrangement.
Specifically, the step 4 comprises the following steps：
Step 401, distinguished according to view, hole mark is preferentially labeled on front view, can not mark portion completely on front view
Divide and concentrate on other individual views；
Step 402, X-coordinate is marked and is divided into top half according to the Y value and the relativeness at view center of mark point
Mark is marked with the latter half；Y-coordinate mark is divided into left side according to the X values and the relativeness at view center of mark point
Point and right half part；
Step 403, markup information on front view is demarcated successively, is handed over if current markup information exists with a upper markup information
Fork then translates current markup information, if generating new intersection after translation, current markup information is translated again
Operation, until being generated without new intersection；If the mark is moved into other views into rower there are still intersecting after translating 3 times
Note；
Step 404, for non-front view, to currently marking if current markup information intersects with the presence of a upper markup information
Information is translated, if generating new intersection after translation, translation again is translated to current markup information, until nothing
Intersect generation or translation number reaches 3 times.
Most mold design enterprises domestic at present are converted to 3D design patterns by 2D designs, but most enterprises are in mould
Engineering drawing needed for tool processing is still essential.Therefore, designer still wants fabrication after 3D designs are completed
Figure, groundwork is exactly to mark the size of part on drawing.Some Mould Enterprises this task is even accounted in design process
60% workload.The process division of fabrication drawing：It imports picture frame, fill in drawing information 20%, projection view 5%, mark
Size 75%.
After carrying out automatic marking according to the system, view by automatic putting, picture frame information by Auto-writing, on view
Size being capable of automatic marking.The part of Mould Enterprise more than 60% will not have to the disposable generation drawing of modification, and 30% part is only
Need slightly to adjust labeling position to reach beautiful arrangement effect, only 10% might have omission, it is necessary to which user additionally grasps
Make supplement marked content.
Engineering drawing design time can be saved：
It imports picture frame, fill in drawing information 20%
Projection view 5%
View mark 60%
Increase detection time 15%
It can to sum up save for 70% design drawing time.
With 30 designers, the enterprise of 30% layout design task amount adjusts.Save manpower：30*0.3*0.7≈
6.2 (people).It is roughly equal to 300,000RMB/.
Using the mold design enterprise of the present invention, it can greatly reduce and mistake is generated due to personnel are tired, and then reduce
It links up, modification cost.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modifications, equivalent replacements and improvements are made should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of engineering drawing automatic marking method based on three-dimensional geometry feature, which is characterized in that comprise the following steps：
Step 1, two dimension view data and three-dimensional modeling data are parsed, and is converted into mark required information and caches to interior
In depositing, while two dimension view data and three-dimensional modeling data are compared, establish mapping relations therebetween；
Step 2, chamfering analysis is carried out to threedimensional model, obtains the fillet surface in threedimensional model；
Step 3, other faces in threedimensional model in addition to plane, cylindrical surface, circular conical surface are filtered out according to area, while screened accurate broken
Face according to the normalized relationship in the broken face of standard face adjacent thereto, is screened broken face and is filtered；
Step 4, the line in the two dimension view corresponding to the face in the threedimensional model of reservation is labeled, then performs duplicate removal behaviour
Make and according to position relationship to markup information into rearrangement.
A kind of 2. engineering drawing automatic marking method based on three-dimensional geometry feature according to claim 1, which is characterized in that institute
Stating step 1 includes：
Screen the straightway and circular arc in two dimension view；
Travel through threedimensional model under solid side information, and in the form of point set express after caching into memory in；
By matrixing by the point set coordinate projection of threedimensional model into two dimension view coordinate system；
Object in two dimension view is compared with the position relationship of three-dimensional point set coordinate projection, and position relationship is consistent
Object and point set projection are preserved into mapping table；
Wherein, the point set is to carry out decile according to certain amount to the side under threedimensional model, and the set that Along ent is formed is
For point set；To the X/Y/Z coordinates of each point is concentrated to ask weighting respectively, be point set center.
A kind of 3. engineering drawing automatic marking method based on three-dimensional geometry feature according to claim 1, which is characterized in that institute
Stating step 2 includes：
Travel through all side informations under threedimensional model；
If there are the while C of the proximal surface B in A, while arbitrary point X on A can while C or side C the extended line led of second order on find pair
Should point X ' so that while A X points tangential direction with while C it is identical in the tangential direction of X ' points, and X-X ' directions are perpendicular to tangent line side
To, then it is assumed that face B may be chamfering, will further be judged：
If face B is plane, then it is assumed that it is bevelling；
If each point radius of curvature is identical on the B of face, and after doing transversal at an arbitrary position, the angle for obtaining circular arc is consistent and angle is small
In 135 °, then it is assumed that face B is rounded corner.
A kind of 4. engineering drawing automatic marking method based on three-dimensional geometry feature according to claim 1, which is characterized in that institute
Stating step 3 includes：
Step 301, the appearance and size of threedimensional model is calculated；
Step 302, trigonometric ratio processing is carried out to each face of threedimensional model and calculates the area in each face, if the area of certain one side
More than the appearance and size * N, then according to face information, filter out except its in threedimensional model in addition to plane, cylindrical surface, circular conical surface
His face only retains plane, cylindrical surface and circular conical surface information in threedimensional model；
If the area of certain one side be less than appearance and size * N, by the face conclude subject to broken face, if certain surely broken face be on-plane surface,
Broken face is summarized as, refers to not as mark, then the remaining broken face of standard is further judged；Wherein N is empirical coefficient；
Step 304, all adjacent surfaces in the broken face of standard are searched, if a certain adjacent surface is plane and normal direction and the broken face of standard
Normal direction is consistent, then is a complete plane by the broken face of standard and adjacent surface suture；If the normal direction in the broken face of standard is with owning
The normal direction of adjacent surface is inconsistent or the adjacent surface in the broken face of standard is on-plane surface, then the broken plane is summarized as broken face,
Do not do mark reference；
Step 305, iteration performs step 304, until the broken face of all standards is judged to finish.
A kind of 5. engineering drawing automatic marking method based on three-dimensional geometry feature according to claim 1, which is characterized in that institute
Stating step 4 includes：
Step 401, distinguished according to view, hole mark is preferentially labeled on front view, can not mark segment set on front view completely
In on other individual views；
Step 402, X-coordinate is marked and is divided into top half mark according to the Y value of mark point and the relativeness at view center
It is marked with the latter half；By Y-coordinate mark according to the relativeness at X values and the view center of mark point be divided into left-half and
Right half part；
Step 403, markup information on front view is demarcated successively, if current markup information with a upper markup information in the presence of if intersecting
Current markup information is translated, if generating new intersection after translation, translation again is carried out to current markup information,
Until it is generated without new intersection；If the mark is moved into other views into rower there are still intersecting after translating predetermined number of times
Note；
Step 404, for non-front view, to current markup information if current markup information intersects with the presence of a upper markup information
It is translated, if generating new intersection after translation, translation again is translated to current markup information, up to no intersection
It generates or translation number reaches predetermined number of times.
A kind of 6. engineering drawing automatic marking method based on three-dimensional geometry feature according to claim 5, which is characterized in that institute
Predetermined number of times is stated as 3 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711329975.9A CN108121862B (en) | 2017-12-13 | 2017-12-13 | Automatic engineering drawing labeling method based on three-dimensional geometric features |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711329975.9A CN108121862B (en) | 2017-12-13 | 2017-12-13 | Automatic engineering drawing labeling method based on three-dimensional geometric features |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108121862A true CN108121862A (en) | 2018-06-05 |
| CN108121862B CN108121862B (en) | 2021-04-27 |
Family
ID=62229109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711329975.9A Active CN108121862B (en) | 2017-12-13 | 2017-12-13 | Automatic engineering drawing labeling method based on three-dimensional geometric features |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108121862B (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109033685A (en) * | 2018-08-14 | 2018-12-18 | 中国电子科技集团公司第三十八研究所 | A kind of mark face automatic determination method towards three-dimensional labeling |
| CN109685147A (en) * | 2018-12-27 | 2019-04-26 | 武汉益模科技股份有限公司 | A kind of otherness control methods based on threedimensional model |
| CN109741321A (en) * | 2019-01-08 | 2019-05-10 | 益模(东莞)智能科技有限公司 | A kind of highly-efficient hole table calculation method based on three-dimensional feature |
| CN110136273A (en) * | 2019-03-29 | 2019-08-16 | 初速度（苏州）科技有限公司 | A kind of sample data mask method and device in machine learning |
| CN110148197A (en) * | 2019-05-23 | 2019-08-20 | 桂林电子科技大学 | A kind of two-dimensional engineering graphic size marking self-adapting regulation method |
| CN110428479A (en) * | 2019-07-26 | 2019-11-08 | 桂林电子科技大学 | A kind of Solid works two-dimensional engineering graphic size marking error correction self-adapting regulation method |
| CN110750840A (en) * | 2019-09-17 | 2020-02-04 | 东莞市超图软件科技有限公司 | Method and device for automatically generating two-dimensional part view based on three-dimensional model |
| CN111325826A (en) * | 2020-01-10 | 2020-06-23 | 郑州航空工业管理学院 | Engineering drawing model projection system and method |
| CN111696174A (en) * | 2020-06-08 | 2020-09-22 | 杭州交联电力设计股份有限公司 | Automatic marking generation method of engineering drawing |
| CN112150636A (en) * | 2019-06-28 | 2020-12-29 | 上海理工大学 | Method for automatically marking entity serial number under three-dimensional digital-analog multi-entity part |
| CN112231500A (en) * | 2019-06-28 | 2021-01-15 | 上海理工大学 | Method for adjusting three-dimensional digital-analog engineering drawing serial number position |
| CN115205471A (en) * | 2022-09-13 | 2022-10-18 | 青岛艾德软件有限公司 | Labeling method and system suitable for automatic drawing of assembly modeling |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1995553A1 (en) * | 2007-05-22 | 2008-11-26 | The Boeing Company | System and method for identifying a feature of a workpiece |
| US20110185272A1 (en) * | 2010-01-27 | 2011-07-28 | Rajkumar Parapura T | Computer Method and Apparatus for Creating Sketch Geometry |
| CN103021029A (en) * | 2013-01-18 | 2013-04-03 | 南京大学 | Automatic labeling method for three-dimensional model component categories |
| CN103279628A (en) * | 2013-06-19 | 2013-09-04 | 福建龙净环保股份有限公司 | Method for manufacturing parameterized engineering drawings |
| CN104364088A (en) * | 2012-06-14 | 2015-02-18 | 加卢斯费迪南德吕施股份公司 | Flat screen material and screen |
| CN105005653A (en) * | 2015-07-11 | 2015-10-28 | 西安工业大学 | MBD based three-dimensional model design information tagging system and method |
| CN106249698A (en) * | 2016-09-26 | 2016-12-21 | 武汉益模科技股份有限公司 | Intelligent programming for wire cutting method and system based on three-dimensional graphics design platform |
| CN106670734A (en) * | 2016-07-27 | 2017-05-17 | 马鞍山市安耐特回转支承有限公司 | Machining method of worm gear type pivoting support |
| KR20170061931A (en) * | 2015-11-27 | 2017-06-07 | 주식회사다스 | Electric discharge machining jig of mold for manufacturing gear tooth and method using the same |
| US20170232373A1 (en) * | 2016-02-16 | 2017-08-17 | Hoffman Enclosures, Inc. | Filter Housing for Filter Fan |
-
2017
- 2017-12-13 CN CN201711329975.9A patent/CN108121862B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1995553A1 (en) * | 2007-05-22 | 2008-11-26 | The Boeing Company | System and method for identifying a feature of a workpiece |
| US20110185272A1 (en) * | 2010-01-27 | 2011-07-28 | Rajkumar Parapura T | Computer Method and Apparatus for Creating Sketch Geometry |
| CN104364088A (en) * | 2012-06-14 | 2015-02-18 | 加卢斯费迪南德吕施股份公司 | Flat screen material and screen |
| CN103021029A (en) * | 2013-01-18 | 2013-04-03 | 南京大学 | Automatic labeling method for three-dimensional model component categories |
| CN103279628A (en) * | 2013-06-19 | 2013-09-04 | 福建龙净环保股份有限公司 | Method for manufacturing parameterized engineering drawings |
| CN105005653A (en) * | 2015-07-11 | 2015-10-28 | 西安工业大学 | MBD based three-dimensional model design information tagging system and method |
| KR20170061931A (en) * | 2015-11-27 | 2017-06-07 | 주식회사다스 | Electric discharge machining jig of mold for manufacturing gear tooth and method using the same |
| US20170232373A1 (en) * | 2016-02-16 | 2017-08-17 | Hoffman Enclosures, Inc. | Filter Housing for Filter Fan |
| CN106670734A (en) * | 2016-07-27 | 2017-05-17 | 马鞍山市安耐特回转支承有限公司 | Machining method of worm gear type pivoting support |
| CN106249698A (en) * | 2016-09-26 | 2016-12-21 | 武汉益模科技股份有限公司 | Intelligent programming for wire cutting method and system based on three-dimensional graphics design platform |
Non-Patent Citations (2)
| Title |
|---|
| ROBERTO LICARI 等: "Part program automatic check for three axis CNC machines", 《JOURNAL OF MATERIALS PROCESSING TECHNOLOGY》 * |
| 陈乐: "基于SolidWorks的工程图快速生成技术研究", 《中国优秀硕士学位论文全文数据库工程科技Ⅱ辑》 * |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109033685B (en) * | 2018-08-14 | 2020-09-25 | 中国电子科技集团公司第三十八研究所 | Automatic determination method for three-dimensional labeling-oriented labeling surface |
| CN109033685A (en) * | 2018-08-14 | 2018-12-18 | 中国电子科技集团公司第三十八研究所 | A kind of mark face automatic determination method towards three-dimensional labeling |
| CN109685147A (en) * | 2018-12-27 | 2019-04-26 | 武汉益模科技股份有限公司 | A kind of otherness control methods based on threedimensional model |
| CN109685147B (en) * | 2018-12-27 | 2023-08-11 | 武汉益模科技股份有限公司 | Differential comparison method based on three-dimensional model |
| CN109741321A (en) * | 2019-01-08 | 2019-05-10 | 益模(东莞)智能科技有限公司 | A kind of highly-efficient hole table calculation method based on three-dimensional feature |
| CN109741321B (en) * | 2019-01-08 | 2022-10-25 | 益模(东莞)智能科技有限公司 | Efficient hole table calculation method based on three-dimensional features |
| CN110136273A (en) * | 2019-03-29 | 2019-08-16 | 初速度（苏州）科技有限公司 | A kind of sample data mask method and device in machine learning |
| CN110136273B (en) * | 2019-03-29 | 2022-06-10 | 魔门塔(苏州)科技有限公司 | Sample data labeling method and device used in machine learning |
| CN110148197A (en) * | 2019-05-23 | 2019-08-20 | 桂林电子科技大学 | A kind of two-dimensional engineering graphic size marking self-adapting regulation method |
| CN112150636A (en) * | 2019-06-28 | 2020-12-29 | 上海理工大学 | Method for automatically marking entity serial number under three-dimensional digital-analog multi-entity part |
| CN112231500A (en) * | 2019-06-28 | 2021-01-15 | 上海理工大学 | Method for adjusting three-dimensional digital-analog engineering drawing serial number position |
| CN110428479B (en) * | 2019-07-26 | 2022-12-13 | 桂林电子科技大学 | Method for adaptively adjusting dimension marking error correction of two-dimensional engineering drawing of Solid works |
| CN110428479A (en) * | 2019-07-26 | 2019-11-08 | 桂林电子科技大学 | A kind of Solid works two-dimensional engineering graphic size marking error correction self-adapting regulation method |
| CN110750840A (en) * | 2019-09-17 | 2020-02-04 | 东莞市超图软件科技有限公司 | Method and device for automatically generating two-dimensional part view based on three-dimensional model |
| CN110750840B (en) * | 2019-09-17 | 2023-10-13 | 东莞市超图软件科技有限公司 | Method and device for automatically generating two-dimensional part view based on three-dimensional model |
| CN111325826A (en) * | 2020-01-10 | 2020-06-23 | 郑州航空工业管理学院 | Engineering drawing model projection system and method |
| CN111696174A (en) * | 2020-06-08 | 2020-09-22 | 杭州交联电力设计股份有限公司 | Automatic marking generation method of engineering drawing |
| CN115205471A (en) * | 2022-09-13 | 2022-10-18 | 青岛艾德软件有限公司 | Labeling method and system suitable for automatic drawing of assembly modeling |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108121862B (en) | 2021-04-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108121862A (en) | A kind of engineering drawing automatic marking method based on three-dimensional geometry feature | |
| US11200351B2 (en) | Method for constructing curve of robot processing path of part with small curvature based on point cloud boundary | |
| CN108515217B (en) | A kind of ball-end milling free form surface surface topography emulation mode | |
| US7643970B2 (en) | Tape course generation method and apparatus for programming a composite tape lamination machine | |
| CN106774151B (en) | A kind of Cutter Radius Compensation Method that can avoid cutting | |
| CN109446607A (en) | Boat segmental part three-dimensional labeling method, electronic device and storage medium | |
| CN101308583B (en) | Curved surface body line boundary model rebuilding method based on three-views and apparatus thereof | |
| WO2022227357A1 (en) | Slicing method, printing method, and device and apparatus for mapping three-dimensional model | |
| CN109522585A (en) | A kind of adaptive layered method preventing 3D printing model characteristic offset | |
| CN104708824A (en) | 3D (three-dimensional) printing adaptive slicing method capable of reserving model features | |
| CN105956020B (en) | A kind of similar image searching method and device based on perceptual hash | |
| CN104123746A (en) | Calculating method for three-dimension scanning point cloud real-time normal vectors | |
| CN110223345A (en) | Distribution line manipulating object position and orientation estimation method based on cloud | |
| CN109325316B (en) | STL model efficient parallel layer cutting method based on concurrent welding sequencing | |
| CN106502701A (en) | The method and device of component alignment during a kind of establishment webpage | |
| CN106293547A (en) | A kind of support automatic generation method printed for 3D | |
| CN104036096B (en) | Method for mapping bump features on inclined face to manufacturing feature bodies | |
| Sanglikar et al. | Modelling rolling ball blends for computer aided geometric design | |
| CN101980221A (en) | Processing of patterned surface in carving processing | |
| Huang et al. | Point cloud registration algorithm based on ICP algorithm and 3D-NDT algorithm | |
| WO2023134131A1 (en) | Method and apparatus for machining joint lines for special-shaped injection molding part on basis of five-axis linkage machine tool | |
| CN103869756B (en) | Method for calculating machinable area of complex plane cavity tool | |
| Melero et al. | On the Interactive 3D Reconstruction of Iberian Vessels. | |
| CN106874919A (en) | A kind of method and apparatus for determining ship hull plate angle point | |
| Wang et al. | A slicing algorithm to guarantee non-negative error of additive manufactured parts |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A method for automatic annotation of engineering drawings based on three-dimensional geometric features Effective date of registration: 20231227 Granted publication date: 20210427 Pledgee: Pudong Shanghai Development Bank Limited by Share Ltd. Wuhan branch Pledgor: WUHAN EMAN TECHNOLOGY CO.,LTD. Registration number: Y2023980074590 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |