CN110442924A - A kind of sheet metal clout control method based on image - Google Patents
A kind of sheet metal clout control method based on image Download PDFInfo
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- CN110442924A CN110442924A CN201910640457.1A CN201910640457A CN110442924A CN 110442924 A CN110442924 A CN 110442924A CN 201910640457 A CN201910640457 A CN 201910640457A CN 110442924 A CN110442924 A CN 110442924A
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000002184 metal Substances 0.000 title claims abstract description 14
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 14
- 238000003860 storage Methods 0.000 claims abstract description 7
- 238000000465 moulding Methods 0.000 claims abstract description 5
- 238000006073 displacement reaction Methods 0.000 claims description 12
- 238000004364 calculation method Methods 0.000 claims description 4
- 238000012216 screening Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 17
- 239000000463 material Substances 0.000 description 11
- 239000002699 waste material Substances 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000009394 selective breeding Methods 0.000 description 1
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- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
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- G06Q50/04—Manufacturing
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The sheet metal clout control method based on image that the invention discloses a kind of, it include: to establish plate clout information structure model, the coding of plate clout is obtained based on model, the name of an article, the trade mark, thickness, calls attribute information, and quantity, surface quality, inventory location information are recorded when plate is put in storage；Processing is carried out to clout image using image procossing and obtains plate clout shape, area information, the plate clout of record is stored in Database virtual plate clout library with the tree structure of " name of an article-trade mark-thickness-calling attribute ", wherein calling attribute includes the shape and area features of plate clout；Principle according to plate parts blank and direct blanking drip molding selection plate establishes plate clout demand model, carries out the matching of plate clout based on shape similarity.The present invention can effectively control clout, realize the utilization again of clout, and can substitute and manually by virtue of experience select clout, improve availability ratio of the armor plate in actual production, reduce production cost.
Description
Technical field
The present invention relates to sheet metal field more particularly to a kind of sheet metal clout control methods based on image.
Background technique
Sheet fabrication industry regards waste disposal for clout mostly at present, and price generally only has the 1/6 of original cost.This is not
The a large amount of wastes that only will cause resource, can also improve manufacturing cost.It is middle-size and small-size up to 8000~10000 tons for steel yearly consumption
For shipyard, 5% waste utilization rate is improved, that is, recycles 400~500 tons of steel, cost 180~2,250,000 yuan can be reduced.
And the availability ratio of the armor plate of general enterprises is only 75%~80%.If these clouts to be used for the manufacture of other products, Ke Yijie
The manufacturing cost for saving blank, economizes on resources from source, realizes recycling for resource.As it can be seen that plate clout recycling can
Huge economic benefit is brought while reducing increased production cost availability ratio of the armor plate.
Plate clout is in irregular shape in one sheet fabrication enterprise, material category is not unique, thickness is inconsistent and quantity
It is numerous to be difficult to manage.The selection of clout is usually to have experience employee to judge by experience, but one piece can in actual production
It is considering based on various dimensions with the selection of clout, the method subjectivity artificially by virtue of experience judged is strong, error-prone, low efficiency
Under, effect is not obvious in actual production.
Summary of the invention
The sheet metal clout control method based on image that the present invention provides a kind of, the present invention can effectively control remaining
Material, realizes the utilization again of clout, and can substitute and manually by virtue of experience select clout, improves plate utilization in actual production
Rate reduces production cost, described below:
A kind of sheet metal clout control method based on image, the described method comprises the following steps:
Plate clout information structure model is established, coding, the name of an article, the trade mark, thickness, the tune of plate clout are obtained based on model
With attribute information, quantity, surface quality, inventory location information are recorded when plate is put in storage；
Processing is carried out to clout image using image procossing and obtains plate clout shape, area information, by the plate of record
Clout is stored in Database virtual plate clout library with the tree structure of " name of an article-trade mark-thickness-calling attribute ", wherein
Calling attribute includes the shape and area features of plate clout；
Principle according to plate parts blank and direct blanking drip molding selection plate establishes plate clout demand model, base
The matching of plate clout is carried out in shape similarity.
It is wherein, described that the matching of plate clout is carried out based on shape similarity specifically:
By being layered the plate clout Hu to be matched retrieved not displacement feature vector H based on keywordsWith clout area；
Using workpiece drawing as example image, sample calculation image Hu not displacement feature vector He；
Example image Hu not displacement feature vector H is calculated separately using Euclidean distance formulaeIn virtual plate clout library
The Hu of clout not displacement feature vector HsSimilarity distance dist (He,Hs)；By clout according to similarity distance dist (He,Hs)
It sorts from small to large；
It determines that clout area selects threshold value according to workpiece, is then the set to be selected of clout in threshold value；By surface quality and
Quantity screens the clout for the demand that do not meet, and required plate clout can be obtained.
The beneficial effect of the technical scheme provided by the present invention is that:
1, the present invention can obtain the information of the plate clout generated in blanking in time, avoid asking for clout information confusion
Topic；
2, the present invention can integrate clout resource information and with the tree-like knot of " name of an article-trade mark-thickness-calling attribute "
Structure is stored in database and forms plate clout library, and it is difficult to solve the problems, such as that plate clout is recycled as waste processing, improves resource
Utilization rate reduces production cost simultaneously；
3, it the present invention is based on the method that the clout matching mechanisms of shape similarity can replace artificial selection clout, avoids
The problem of artificial subjectivity is strong, error-prone, low efficiency.
Detailed description of the invention
Fig. 1 is that sheet metal clout matches flow chart；
Fig. 2 is sheet metal clout information structure model schematic diagram；
Fig. 3 is that sheet metal clout image resource pre-processes schematic diagram；
Fig. 4 is sheet metal clout database store structure schematic diagram；
Fig. 5 is sheet metal clout demand model schematic diagram；
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, embodiment of the present invention is made below further
Ground detailed description.
In view of the case where most manufacturing enterprise's waste utilization rates are not high and clout selection is only judged by artificial experience, this hair
Bright embodiment relies on image processing techniques, effectively controls clout resource by establishing plate message structure storage model, solves enterprise
The problem of sparetime material control is difficult, and clout is as waste processing.It is similar via shape by the Formal Representation to clout resource
Algorithm is spent, clout resource can rationally be controlled and available resources are matched by demand fast accurate.
Step 1: establishing plate clout information structure model
In actual production plate clout have the characteristics that information dispersion, contain much information, information update is fast, various shapes,
To record clout information in time, fast and accurately.Establish plate clout information structure model, model by three the first level factors,
Eight the second level factors, two three-level factor compositions, specific as follows:
Material property: material property is made of two name of an article, trade mark factors, the name of an article, the trade mark be clout material characteristics its
The middle name of an article represents name of product of clout mother matrix, such as carbon steel, Fine Steel Casting iron, building Series Steel etc., and the trade mark is chemistry member
Plain symbol sum number combinatorics on words indicates purposes, characteristic and the technique, such as Q235,45,25Mn etc. of steel plate.
Geometrical characteristic: by thickness, call two factors composition of attribute, thickness and call attribute be clout geometrical property wherein
An important factor for thickness is one block of clout of selection, calls attribute to be made of again the chamfered shape and two factor of area information of clout.
Annotation information: by coding, surface condition, quantity, four factors composition of inventory locations.Wherein, it is encoded to plate discrimination
Unique number by step 2 clout image obtain the specific time constitute.Surface quality is clout surface losses situation, such as
There are non-corroding, damage, recess etc..Quantity is the stockpile number of such clout.Inventory locations are after clout acquisition of information is complete
It is recorded when storage, extraction when expressing the storage location of clout convenient for utilizing again.
Step 2: plate clout acquisition of information
Plate acquisition of information workbench is set up in workshop, workbench is made of table top and CCD camera, CCD camera shooting
Machine, which is placed in right above table top, keeps camera lens vertical with table top holding.Wherein for placing plate clout, CCD camera is used for table top
Obtain plate clout image.CCD camera uses chessboard calibration method to demarcate camera before first use, and calibration purpose is
Determine that image pixel value captured by CCD camera corresponds to the distance of real work platform, so that it is determined that the world of table plane
The transformational relation of coordinate and image pixel coordinates.The acquisition of plate clout image information can be carried out after the completion of camera calibration.
When generating clout in actual plate cutting, the name of an article, the trade mark, thickness information of clout mother matrix are recorded, to remaining
Material, which carries out finishing cutting, makes clout at regular shape (rectangle, rectangular, round, triangle are defined as regular shape in this method)
Avoid clout containing hole.It will be shot on clout placement plate clout acquisition of information workbench after completing finishing, obtain plate
The acquisition specific time of material clout image, clout image encodes as the identification of clout.
Wherein, plate clout information access process can obtain the coding of plate clout, the name of an article, the trade mark, thickness, call category
Property information, remaining quantity, surface quality, inventory location information plate be put in storage when recorded.
Step 3: the processing of plate clout image resource
Obtain plate clout image after using image processing algorithm to clout image carry out processing obtain plate clout shape,
Area information.It is as shown below to obtain clout information flow.
The colored clout image that will acquire first carry out gray proces carry out again two-value processing then carry out contours extract it is last
Areal calculation is carried out, can be obtained shape, the area information of plate clout.Wherein contours extract uses Hu not bending moment algorithm, warp
The shape information of clout can be indicated by crossing seven moment invariants after algorithm calculates.
By the plate clout name of an article of record, the trade mark, thickness, shape, area information with the " name of an article-trade mark-thickness-calling
The tree structure of attribute " is stored in Database virtual plate clout library, wherein call attribute include plate clout shape and
Area features, as shown in Figure 3.
Step 4: the plate clout matching mechanisms based on shape similarity
Principle according to plate parts blank and direct blanking drip molding selection plate establishes plate clout demand model, such as
Shown in Fig. 4.
When there is plate clout use demand in actual production, plate needed for gradually being inputted according to plate clout demand model
The name of an article, the trade mark, the thickness of material clout carry out the retrieval of the layering based on keyword to virtual plate clout library, carry out three times based on pass
It is matched to after the retrieval of key word and calls attribute layer.
Plate clout matching mechanisms based on shape similarity, since plate clout has, area is different, different, material
The feature of material and thickness distribution complexity, therefore the blank that is directed to of the method or direct blanking drip molding should meet shape and more advise
Then, area does not answer the characteristics of excessive, negligible amounts.Such as in rib plate parts in pressure vessel manufacturing or building trade
Such regular shape quantity such as pre-embedded steel slab few part or blank.
Plate clout matching algorithm based on shape similarity includes the following steps:
1, by being layered the plate clout Hu to be matched retrieved not displacement feature vector H based on keywordsWith clout face
Product；
It 2, is example image or directly using workpiece drawing as example by the image that step 2 method obtains using sample workpiece
Image, according to the method sample calculation image Hu not displacement feature vector H of step 3e；
3, Euclidean distance formula is utilizedCalculate separately example image Hu not displacement feature
Vector HeWith the Hu of clout in virtual plate clout library not displacement feature vector HsSimilarity distance dist (He,Hs)；
4, by clout according to similarity distance dist (He,Hs) sort from small to large；
5, it determines that clout area selects threshold value according to workpiece, is then the set to be selected of clout in threshold value；
6, the clout that demand is not met by surface quality and quantity screening, can be obtained required plate clout.
The embodiment of the present invention to the model of each device in addition to doing specified otherwise, the model of other devices with no restrictions,
As long as the device of above-mentioned function can be completed.
It will be appreciated by those skilled in the art that attached drawing is the schematic diagram of a preferred embodiment, the embodiments of the present invention
Serial number is for illustration only, does not represent the advantages or disadvantages of the embodiments.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (2)
1. a kind of sheet metal clout control method based on image, which is characterized in that the described method comprises the following steps:
Plate clout information structure model is established, the coding of plate clout is obtained based on model, the name of an article, the trade mark, thickness, calls category
Property information, quantity, surface quality, inventory location information plate be put in storage when recorded；
Processing is carried out to clout image using image procossing and obtains plate clout shape, area information, by the plate clout of record
It is stored in Database virtual plate clout library with the tree structure of " name of an article-trade mark-thickness-calling attribute ", wherein calling
Attribute includes the shape and area features of plate clout；
Principle according to plate parts blank and direct blanking drip molding selection plate establishes plate clout demand model, is based on shape
Shape similarity carries out the matching of plate clout.
2. a kind of sheet metal clout control method based on image according to claim 1, which is characterized in that the base
The matching of plate clout is carried out in shape similarity specifically:
By being layered the plate clout Hu to be matched retrieved not displacement feature vector H based on keywordsWith clout area；
Using workpiece drawing as example image, sample calculation image Hu not displacement feature vector He；
Example image Hu not displacement feature vector H is calculated separately using Euclidean distance formulaeWith clout in virtual plate clout library
Hu not displacement feature vector HsSimilarity distance dist (He, Hs)；By clout according to similarity distance dist (He, Hs) from it is small to
Big sequence；
It determines that clout area selects threshold value according to workpiece, is then the set to be selected of clout in threshold value；Pass through surface quality and quantity
Screening does not meet the clout of demand, and required plate clout can be obtained.
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| CN201910640457.1A CN110442924A (en) | 2019-07-15 | 2019-07-15 | A kind of sheet metal clout control method based on image |
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