CN105243659A - Image positioning method of three-dimensional precise engraving machine - Google Patents
Image positioning method of three-dimensional precise engraving machine Download PDFInfo
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- CN105243659A CN105243659A CN201510577494.4A CN201510577494A CN105243659A CN 105243659 A CN105243659 A CN 105243659A CN 201510577494 A CN201510577494 A CN 201510577494A CN 105243659 A CN105243659 A CN 105243659A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/0002—Inspection of images, e.g. flaw detection
- G06T7/0004—Industrial image inspection
- G06T7/001—Industrial image inspection using an image reference approach
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/30—Subject of image; Context of image processing
- G06T2207/30108—Industrial image inspection
- G06T2207/30164—Workpiece; Machine component
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Abstract
The invention discloses an image positioning method of a three-dimensional precise engraving machine and belongs to the three-dimensional precise laser machining equipment technical field. According to the image positioning method, a boundary can be obtained through analysis based on the edges of two images of a mold which are obtained sequentially; with the boundary adopted as reference, positioning is carried out; first positioning point information of the first image is configured as the positioning point of the second image, so that the matching of the two images can be realized; the mold can be positioned at any position of a laser machining platform; and therefore, precise machining can be realized, and the precision of the machining can be within 0.001mm.
Description
Technical field
The present invention relates to three-dimensional precise laser process equipment technical field, especially relate to the image scanning location technology being applied to three-dimensional laser processing equipment.
Background technology
Title that mould have " mother of industry ", according to the monitoring of the international Mo Xie Secretariat, within 2013, whole year production mould 1,800 ten thousand overlaps, and average mould output expectation every month is at 1,500,000 covers.Only calculate with the consumption sum of 100,000 yuan according to every mold, estimate that the national mould gross output value in 2013 reaches 1.8 trillion yuan.”
China's Die Industry annual value of production is in fact early to reach trillion ranks, this is a very simple sum, but the Chinese mould annual value of production joining in a common effort meter with place of china mould differs 10 times less than 1,800 hundred million, reason is mould itself only as a tool of production of manufactured goods, major part mould (60%) is not betrayed, and produces sales value.China's mould ranks among global Making mold big country already, and according to the driving effect of die industry 1: 100, Chinese mould pulls related industry nearly 2,000,000,000,000,000.
In traditional mold production process, a mould can carry out die sinking after design, and the jargon of first published mould is called palm, is mainly used in the person of designing and developing and discusses product function and performance, find out the shortcomings and deficiencies in design process, again design and make up these defects.This convergence process is called engineering verification, owing to how being related to the form of final volume production product, so extremely important." time required for the die sinking of palm generally needs week age, the shortlyest also takes 3-4 days, and in the business community that business opportunity is fast changing, such efficiency cannot be satisfactory.In addition, the risk of the die sinking in conventional fabrication processes is comparatively large, besides the time, also has 2 risks to allow manufacturer worry.One is that the cost of die sinking is comparatively large, for not through market test innovative design for, once market is not approved, larger loss will be caused; Two be product die sinking after nobody shows any interest in, even if the product of maturation, do not have client to be ready to place an order, all have no use.Front a kind of risk is at least worth doing, and rear a kind of risk directly just wastes the resource of exploitation." compared with conventional fabrication processes, these three advantages of the stereo shaping that three-dimensional laser precision processing technology possesses, manufacturing speed, cost of manufacture are huge beyond doubt.Above 3 risks well to drop to minimum by it.
3D prints and can be described as manufacturing industry cutting edge technology the most showing tremendous enthusiasm at present, and external scientific and technological media comments says that 3D printing technique will change the world.At die industry, " 3D printing " is exactly three-dimensional laser processing technology.At present, three-dimensional laser processing prints also exists very large problem, one of them is exactly, in laser processing procedure, if fruit intermediate demand need processing mould take out check after to again mould be put on processing platform, now because mould can not be put back in original position by manual operation, cause following process to misplace, finally cause mould to cancel; And if mould is not taken out, the also situation of inconvenient deviser's real-time monitored mould.
Summary of the invention
The present invention is in order to overcome the deficiencies in the prior art, a kind of image position method of three-dimensional precise engraving machine is provided, its objective is that the existing three-dimensional laser processing equipment of solution causes mould not reset owing to touching mould and carries out processing thus the problem causing Mould Machining to misplace in process.
In order to solve above-mentioned technical matters, the basic technical scheme that the present invention proposes is: a kind of image position method of three-dimensional precise engraving machine, comprises the laser scanning lens for scanning object image, and its concrete steps are as follows:
The mould of Laser Processing platform is positioned over by laser scanning lens scanning, and the first image display that this mould of scanning is obtained;
Based on image processing techniques, image analysis processing is carried out to this first image, with a border of the mould shown in this first image for benchmark sets up world coordinate system, obtain the first anchor point;
The data of the first image and the world coordinate system obtained on this first image and the first anchor point are stored;
When mould is moved out of and is again put back to this Laser Processing platform, laser scanning lens carries out second time scanning to this mould, and scanning obtains the second image;
Again based on image processing techniques, the first image and the second image are compared, the world coordinate system obtained and the first anchor point are identified at the same position of the second image and the identical point of the second image is configured to the second anchor point at the first image;
Three-dimensional precise engraving machine carries out following process according to the second anchor point of the second image to this mould.
Further, in the image position method of three-dimensional precise engraving machine of the present invention, described laser scanning lens is hurrySCAN10.
Further, in the image position method of three-dimensional precise engraving machine of the present invention, the method that first image is inquired about die boundary is: image processor scans this first image, obtain the pixel of this first image, search edge pixel according at least one of the adjacent pixels color of pixel and maximum difference direction; Then according to the edge determining this first image according to the continuity of adjacent pixels.
Further, in the image position method of three-dimensional precise engraving machine of the present invention, to make a return journey top edge pixel according to the adjacent pixels color of the first image, concrete is exactly read whole first image according to pixel, check that whether the color of each pixel neighbor is identical, if different, then judge that this pixel is edge pixel, if and checked a series of pixel and obtain continuous print edge pixel, so then can obtain an edge line of the first image.
Further, in the image position method of three-dimensional precise engraving machine of the present invention, laser scanning lens to this mould carry out second time scan and the second image obtained also by image processor process, be specially: image processor scans this second image, obtain the pixel of this second image, search edge pixel according at least one of the adjacent pixels color of pixel and maximum difference direction; Then according to the edge determining this second image according to the continuity of adjacent pixels.
The invention has the beneficial effects as follows:
The present invention obtains border by the edge analysis of former and later two images of mould, be that benchmark positions again with border, and be the anchor point of the second image by the first anchor point information configuration of the first image, achieve coincideing of two images, finally realize the location of mould in the optional position of Laser Processing platform, realize accurately processing, and within its precision is 0.001mm.
Embodiment
The image position method of a kind of three-dimensional precise engraving machine of the present invention, comprise the laser scanning lens for scanning object image, its concrete steps are as follows:
The mould of Laser Processing platform is positioned over by laser scanning lens scanning, and the first image display that this mould of scanning is obtained;
Based on image processing techniques, image analysis processing is carried out to this first image, with a border of the mould shown in this first image for benchmark sets up world coordinate system, obtain the first anchor point;
The data of the first image and the world coordinate system obtained on this first image and the first anchor point are stored;
When mould is moved out of and is again put back to this Laser Processing platform, laser scanning lens carries out second time scanning to this mould, and scanning obtains the second image;
Again based on image processing techniques, the first image and the second image are compared, the world coordinate system obtained and the first anchor point are identified at the same position of the second image and the identical point of the second image is configured to the second anchor point at the first image;
Three-dimensional precise engraving machine carries out following process according to the second anchor point of the second image to this mould.
Concrete, the laser scanning lens that the present invention uses for German SCANLAB Inc. standby, the high precision scanner head that this is a 1.061un of being suitable for wavelength, reaction velocity is exceedingly fast.This camera lens have high dynamic property, minimum drift and the best linear, therefore will have high sharpness at the picture of scanning.By this laser scanning lens scanning mould, and obtain the first image, then this first image is saved, and is simultaneously displayed in display.
Based on image processing techniques, image analysis processing is carried out to this first image, with a border of the mould shown in this first image for benchmark sets up world coordinate system, obtain the first anchor point.Concrete, image processor scans this first image, obtains the pixel of this first image, searches edge pixel according at least one of the adjacent pixels color of pixel and maximum difference direction; Then according to the edge determining this first image according to the continuity of adjacent pixels.Such as, mention in the present embodiment and can to make a return journey top edge pixel according to the adjacent pixels color of the first image, concrete is exactly read whole first image according to pixel, check that whether the color of each pixel neighbor is identical, if different, then judge that this pixel is edge pixel, and if checked a series of pixel and obtain continuous print edge pixel, so then can obtain an edge line of the first image.If the orthogonal projection shape of mould is square, then other several edge line is also the edge line being obtained other three limits by above-mentioned method, finally obtains the edge of mould.After determining the edge line of the mould on the first image with one of them edge line for benchmark positions, be that benchmark sets up a world coordinate system according to the point of on this edge line, and the true origin of this world coordinate system is the first anchor point.In addition, in order to determine this first anchor point, image processor will determine the particular location of this first anchor point to the distance of this first anchor point according to the edge line of the mold profile on the first image.So just can realize located of the first image.
In laser processing procedure, owing to needing the concrete technical situation of watching mould, technician needs this mould to take out to check, but check complete after mould to be put back to Laser Processing platform, but now this mould and position before can not fit like a glove, like this continue to add mould will be caused man-hour damaged.
Now, by laser scanning lens, second time scanning is carried out to mould, after scanning, obtain the second image.Image processor will carry out analyzing and processing to the second image.Be specially: image processor scans this second image, obtains the pixel of this second image, search edge pixel according at least one of the adjacent pixels color of pixel and maximum difference direction; Then according to the edge determining this second image according to the continuity of adjacent pixels.Such as, mention in the present embodiment and can to make a return journey top edge pixel according to the adjacent pixels color of the second image, concrete is exactly read whole second image according to pixel, check that whether the color of each pixel neighbor is identical, if different, then judge that this pixel is edge pixel, and if checked a series of pixel and obtain continuous print edge pixel, so then can obtain an edge line of the second image.If the orthogonal projection shape of mould is square, then other several edge line is also the edge line being obtained other three limits by above-mentioned method, finally obtains the edge of mould.Now, first image and the second image are compared by image processor, the world coordinate system obtained at the first image and the first anchor point are characterized on the second image, so just can on the information representation of the world coordinate system on the first image and the first anchor point again the second image.
Afterwards, three-dimensional precise engraving machine carries out following process according to the second anchor point of the second image to this mould.
Technology of the present invention is intended to solve in current three-dimensional laser processing is forbidden mould location thus is caused the problem of Mould Machining failure.Adopt technology of the present invention can ensure mould registration in process, its accuracy guarantee is within 0.001mm.Greatly can facilitate three-dimensional laser processing by this technology, improve production efficiency, most important is improve the quality of production.
The announcement of book and instruction according to the above description, those skilled in the art in the invention can also change above-mentioned embodiment and revise.Therefore, the present invention is not limited to embodiment disclosed and described above, also should fall in the protection domain of claim of the present invention modifications and changes more of the present invention.In addition, although employ some specific terms in this instructions, these terms just for convenience of description, do not form any restriction to the present invention.
Claims (5)
1. an image position method for three-dimensional precise engraving machine, comprises the laser scanning lens for scanning object image, it is characterized in that, its concrete steps are as follows:
The mould of Laser Processing platform is positioned over by laser scanning lens scanning, and the first image display that this mould of scanning is obtained;
Based on image processing techniques, image analysis processing is carried out to this first image, with a border of the mould shown in this first image for benchmark sets up world coordinate system, obtain the first anchor point;
The data of the first image and the world coordinate system obtained on this first image and the first anchor point are stored;
When mould is moved out of and is again put back to this Laser Processing platform, laser scanning lens carries out second time scanning to this mould, and scanning obtains the second image;
Again based on image processing techniques, the first image and the second image are compared, the world coordinate system obtained and the first anchor point are identified at the same position of the second image and the identical point of the second image is configured to the second anchor point at the first image;
Three-dimensional precise engraving machine carries out following process according to the second anchor point of the second image to this mould.
2. the image position method of three-dimensional precise engraving machine as claimed in claim 1, is characterized in that: described laser scanning lens is hurrySCAN10.
3. the image position method of three-dimensional precise engraving machine as claimed in claim 1, it is characterized in that, the method that first image is inquired about die boundary is: image processor scans this first image, obtain the pixel of this first image, search edge pixel according at least one of the adjacent pixels color of pixel and maximum difference direction; Then according to the edge determining this first image according to the continuity of adjacent pixels.
4. the image position method of three-dimensional precise engraving machine as claimed in claim 3, it is characterized in that, to make a return journey top edge pixel according to the adjacent pixels color of the first image, concrete is exactly read whole first image according to pixel, check that whether the color of each pixel neighbor is identical, if different, then judge that this pixel is edge pixel, if and checked a series of pixel and obtain continuous print edge pixel, so then can obtain an edge line of the first image.
5. the image position method of three-dimensional precise engraving machine as claimed in claim 1, it is characterized in that: laser scanning lens to this mould carry out second time scan and the second image obtained also by image processor process, be specially: image processor scans this second image, obtain the pixel of this second image, search edge pixel according at least one of the adjacent pixels color of pixel and maximum difference direction; Then according to the edge determining this second image according to the continuity of adjacent pixels.
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Cited By (3)
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| CN106671674A (en) * | 2017-01-24 | 2017-05-17 | 聊城大学东昌学院 | Rotating carving machine and visual identification method thereof |
| CN106881983A (en) * | 2017-01-24 | 2017-06-23 | 聊城大学东昌学院 | A kind of flat carving engraving machine and its visual identity method |
| CN107833233A (en) * | 2017-11-01 | 2018-03-23 | 南通欧科数控设备有限公司 | A kind of image position method of three-dimensional precise engraving machine |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106671674A (en) * | 2017-01-24 | 2017-05-17 | 聊城大学东昌学院 | Rotating carving machine and visual identification method thereof |
| CN106881983A (en) * | 2017-01-24 | 2017-06-23 | 聊城大学东昌学院 | A kind of flat carving engraving machine and its visual identity method |
| CN106671674B (en) * | 2017-01-24 | 2019-03-05 | 聊城大学东昌学院 | One kind turning carving engraving machine and its visual identity method |
| CN107833233A (en) * | 2017-11-01 | 2018-03-23 | 南通欧科数控设备有限公司 | A kind of image position method of three-dimensional precise engraving machine |
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