CN102248288A - Method for identifying and positioning flexible printed circuit (FPC) board plug - Google Patents
Method for identifying and positioning flexible printed circuit (FPC) board plug Download PDFInfo
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- CN102248288A CN102248288A CN2011101806948A CN201110180694A CN102248288A CN 102248288 A CN102248288 A CN 102248288A CN 2011101806948 A CN2011101806948 A CN 2011101806948A CN 201110180694 A CN201110180694 A CN 201110180694A CN 102248288 A CN102248288 A CN 102248288A
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Abstract
The invention relates to a method for identifying and positioning a flexible printed circuit (FPC) board plug. The method comprises the following steps of: 1, calibrating at least four virtual identifier characteristic points on an image of the edge of an FPC board on a corresponding computer aided manufacturing (CAM) figure file and importing laser processing software to set the virtual identifier characteristic points as machine tool coordinate points; 2, flatly placing the FPC board with slightly large expansion ratio after manual detection on a platform and fixing the FPC board; 3, calibrating the camera resolution ratio of a positioning system by using a high-precision dimension standard sheet, wherein the resolution ratio remains unchanged when the height from a camera imaging plane to a platform plane is not changed; 4, aligning the camera with each identifier point of the FPC board real object obtained in the step 1 and capturing and calculating the actual coordinate point, corresponding to the platform, of each identifier point; 5, performing projective transformation on an FPC board coordinate system and a machine tool coordinate system, identifying and positioning the FPC board plug, and performing malformation correction compensation; and 6, adjusting laser cutting parameters acquired from cutting system software to be optimum and performing laser cutting processing on the FPC board and the plug appearance. The method is simple and convenient in operation and high in precision.
Description
Technical field
The present invention relates to a kind of recognition positioning method, particularly relate to a kind of FPC plate plug recognition positioning method.
Background technology
The portable product growth of requirement is promoting wiring board and is constantly developing into two-sided, multilayer, flexible and rigid-flex combined board from single face, and constantly developing to high accuracy, high density and high reliability direction.
Flex circuit application, promptly the FPC plate substrate is a copper, need cover one deck coverlay at circuit, and the coverlay material is generally polyimides, and hot-setting adhesive is at high temperature combined closely coverlay and wiring board, is pressed together on PCB surface and plays a protective role.And the later stage of FPC plate production need be processed profile, has a socket head to be used for being connected with other electronic products at the profile place.The reliability that wiring board connects is tighter higher to the laser cutting precision.
The method of batch machining FPC profile is a method for die cutting at present, and small lot FPC plate and FPC plate sample mainly use Laser cutting.Up to now, there has been how tame manufacturer to develop the UV laser cutting machine both at home and abroad and has been used to make the FPC sample, and FPC plate plug profile cutting method commonly used: cursor point method of identification and character recognition method, bibliographical information plug limit method of identification is not arranged, and this method makes that the more convenient operation of FPC plate laser cutting is simpler, and cutting accuracy is also higher.
In traditional production, the CCD location technology that laser cutting technique is commonly used can only be discerned the cursor point on the FPC plate of location, cursor point circle of position shape, cross or square, and be prone to the plug cutting accuracy and do not reach requirement and the low situation of product qualified rate.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of FPC plate plug recognition positioning method is provided, make that the more convenient operation of FPC plate laser cutting is simpler, cutting accuracy is higher.
In order to achieve the above object, the technical solution used in the present invention is, a kind of FPC plate plug recognition positioning method, and its step is as follows:
Step 1, on the FPC plate plug edge graph picture on the CAM of correspondence (abbreviation of English computer Aided Manufacturing) the figure shelves, demarcate at least four virtual identification characteristics points, and, be set at the machine coordinates point with identification characteristics point importing Laser Processing software;
Step 2, will entirely be placed on the operating platform through the harmomegathus rate FPC plate bigger than normal after manual the inspection, and fixing;
The camera resolution ratio of step 3, usefulness high accuracy dimensional standard sheet calibrating and positioning system, and this resolution ratio is done to remain unchanged when the platform level is constant apart from flat at the camera imaging plane;
Step 4, with camera each identification characteristics point of the firm and hard thing of FPC in the alignment procedures 1 respectively, catch the actual coordinate point that calculates each identification point respective operations platform;
Step 5, carry out projective transformation, and FPC plate plug is discerned location and lopsided rectification building-out from FPC plate coordinate system and lathe coordinate system;
Step 6, the parameters of laser cutting of laser cutting machine is adjusted to the best, Laser cutting FPC plate and plug profile.
Identification characteristics point described in the above-mentioned steps 1 is positioned at the edge of the plug of FPC plate, promptly on the boundary line between plug and the common flexible sheet material.
Laser Processing software described in the above-mentioned steps 1 is UV laser cutting software.
Seizure calculation procedure described in the above-mentioned steps 4 is that UV laser cutting software control CCD camera is caught the identification characteristics point, then data is fed back to UV laser cutting software and calculates.
Rectification building-out described in the above-mentioned steps 5 is for to carry out rectification building-out by laser cutting software, and with the checking list comparison, obtain the rectification building-out parameter, the rectification building-out parameter is the part of parameters of laser cutting.
Compared with prior art, the invention has the beneficial effects as follows: effectively improve the problem that causes FPC plate cutting deviation by harmomegathus, use existing laser process equipment, use the method that CCD discerns new plug limit, by ccd image identification plug algorithm, catch the characteristic point on various difformity plugs limit, and thereby the corresponding machine coordinates system that is converted into finishes the location, after using FPC plate plug identification location technology, the big wiring board size of compensation harmomegathus distortion, the control profile is cut within required precision, with the plug size precision that guarantees that laser cutting is come out, and finished product qualification rate height.
Description of drawings
Fig. 1 is a method flow diagram of the present invention;
Fig. 2 is FPC plate harmomegathus rate of the present invention and cutting accuracy curve map.
The specific embodiment
Purport of the present invention is to overcome the deficiencies in the prior art, and a kind of FPC plate plug recognition positioning method is provided, and by utilization ccd image identification plug algorithm, serves as the location datum mark with the plug limit, carries out the distortion correction compensation, thereby guarantees cutting accuracy.Catch the characteristic point on various difformity plugs limit, thereby and the corresponding machine coordinates system that is converted into finish the location, after using FPC plate plug identification location technology, can guarantee the plug size precision that laser cutting is come out, and finished product qualification rate height.
Be elaborated with reference to accompanying drawing below in conjunction with embodiment, so that technical characterictic of the present invention and advantage are carried out more deep annotation.
Method flow diagram of the present invention as shown in Figure 1, a kind of FPC plate plug recognition positioning method, its step is as follows:
Step 1, on the FPC plate plug edge graph picture on the CAM of the correspondence figure shelves, demarcate at least four virtual identification characteristics points, and, be set at the machine coordinates point identification characteristics point importing Laser Processing software;
Step 2, will entirely be placed on the operating platform through the harmomegathus rate FPC plate bigger than normal after manual the inspection, and fixing;
The camera resolution ratio of step 3, usefulness high accuracy dimensional standard sheet calibrating and positioning system, and this resolution ratio is done to remain unchanged when the platform level is constant apart from flat at the camera imaging plane;
Step 4, with camera each identification characteristics point of the firm and hard thing of FPC in the alignment procedures 1 respectively, catch the actual coordinate point that calculates each identification point respective operations platform;
Step 5, carry out projective transformation, and FPC plate plug is discerned location and lopsided rectification building-out from FPC plate coordinate system and lathe coordinate system;
Step 6, the parameters of laser cutting of laser cutting machine is adjusted to the best, Laser cutting FPC plate and plug profile.
Identification characteristics point described in the above-mentioned steps 1 is positioned at the edge of the plug of FPC plate, promptly on the boundary line between plug and the common flexible sheet material.
Laser Processing software described in the above-mentioned steps 1 is UV laser cutting software.
Seizure calculation procedure described in the above-mentioned steps 4 is that UV laser cutting software control CCD camera is caught the identification characteristics point, then data is fed back to UV laser cutting software and calculates.
Rectification building-out described in the above-mentioned steps 5 is for to carry out rectification building-out by UV laser cutting software, and with the checking list comparison, obtain the rectification building-out parameter, the rectification building-out parameter is the part of parameters of laser cutting.
The FPC wiring board mainly is divided into single face and two-sided and multilayer circuit board, and double-sided wiring board is the product that grows up from single sided board.The material of FPC plate mainly contains flexibility coat copper plate, diaphragm and polyimides reinforcing film.Each operation of FPC plate production procedure all can influence wiring board profile harmomegathus, its reason is: the wiring board that is made of flexibility coat copper plate, polyimides and polyimides reinforcing film etc., lamination process needs a person with the qualifications of a general and expects that temperature is raised to more than 170 ℃, the cooling back internal stress occurs because of the harmomegathus difference of coefficients of copper and polyimides, destroyed the material equilibrant force, contraction distortion appears in base material, and the distortion of base material line pattern causes the harmomegathus inequality of FPC wiring board.
The harmomegathus inequality of FPC plate easily causes the sharp processing precision not reach requirement.The present invention uses the profile laser cutting technique, measure the cutting deviation value of the different harmomegathus rates of wiring board, draw out the harmomegathus-precision curve of laser cutting, again by harmomegathus-precision curve, at the big FPC plate of harmomegathus rate, use new CCD datum mark recognition technology, the FPC plate is carried out distortion correction, reach and improve FPC plate plug machining accuracy purpose.
The present invention is applied in the instantiation, and 10 of picked at random FPC plates use UV laser cutting machine and secondary element image projecting apparatus.
At first measure the cutting accuracy of laser cutting machine, whether judgment device reaches the required precision of design.Choose the wiring board of several harmomegathus rates of cutting then, measure its cutting accuracy, draw out the curve of harmomegathus rate and cutting accuracy.
To the accuracy test of equipment, earlier equipment running status and cutting accuracy are tested before the cutting processing once more.
Measuring method is that measurement FPC plate deducts corresponding theoretical value again and promptly obtains deviate to the distance on plug limit.Three times the data that the equipment cutting accuracy records are as shown in the table respectively in the wiring board cutting:
Draw from tables of data, the cutting variance yields is 5 microns, and machining accuracy meets the requirements, and equipment is in normal condition.
The cutting accuracy of different harmomegathus models is in the wiring board production process, because the reason of jigsaw, plating, lamination and the height temperature difference causes the harmomegathus distortion of model.Laser equipment itself is made adequate compensation to FPC plate harmomegathus, but when the harmomegathus of FPC plate distortion excessive, with regard to uncontrollable cutting form accuracy in the requirement of client scope.
In order to measure the FPC plate cutting accuracy of different harmomegathus rates, choose the wiring board material of 7 kinds of harmomegathus rates 0.1 ‰, 0.2 ‰, 0.5 ‰, 0.8 ‰, 1.0 ‰, 2.0 ‰ and 3.0 ‰ respectively, behind the location, the laser cutting profile, measure cut lengths with Quadratic Finite Element then, compare with the graph theory value, calculate deviate, count average deviation value and variance then.
FPC plate harmomegathus rate and cutting accuracy curve map as shown in Figure 2, this figure shows, when the harmomegathus rate less than 0.8 ‰, cutting accuracy fluctuates in ± 0.05 millimeter scope; Increase along with the harmomegathus rate, average cutting deviation value and variance yields all increase, when the harmomegathus rate greater than 0.8 ‰ the time, cutting accuracy do not reach ± 0.05 millimeter customer requirement, the harmomegathus rate is greater than 0.8 ‰, and cutting average deviation value surpasses 0.020 millimeter and variance yields greater than 0.025 millimeter; After this showed that the harmomegathus rate surpasses 0.8 ‰, FPC plate cutting accuracy can't satisfy the required precision of profile ± 0.05 millimeter.
With the harmomegathus rate greater than the cutting accuracy of 0.8 ‰ FPC plates be controlled at ± 0.05 millimeter scope in, become a difficult problem of Laser cutting.According to reported in literature and wiring board producer quality requirements, the critical size of FPC plate plug is plug size and the plug distance to edges of boards.When navigation system is that datum mark carries out lopsided correction calculation with the plug limit, can subdue the excessive deviation that causes plug check size and back gauge of wiring board harmomegathus, thereby guarantee the precision of cutting.
The resolution ratio of the laser cutting machine navigation system that experiment is used is ± 3 microns, clearly differentiates the boundary line between plug and the common flexible sheet material, for the lopsided rectification building-out of FPC plate provides the accurate benchmark point.Through the checking of wiring board production scene, FPC plate plug recognition positioning method provided by the present invention can be controlled the big FPC plate appearance and size precision of harmomegathus rate.The present invention adds up the dimensional discrepancy that laser cutting machine cuts different harmomegathus rate wiring boards, and analysis to measure data, the harmomegathus that sums up the FPC plate can not be controlled cutting accuracy in dimensional tolerance ± 0.05 millimeter scope greater than 0.8 ‰ o'clock.For solving the cutting accuracy problem of the big wiring board of harmomegathus deflection, this paper uses new CCD system identification plug and newly locatees datum mark, compensation amount of distortion, the form accuracy of control production board.
For example, FPC plate model 110387ba, the harmomegathus rate is 1.40 ‰.Plug is 0.330mm to the theoretical size value on limit, and when Laser Processing, with optics identification point location, after the cutting, the actual size value that the right and left is measured is 0.250mm and 0.378mm, does not reach the requirement of 0.330 ± 0.050mm.After using this method, after the cutting, the size of measurement is respectively 0.312mm and 0.352mm, meets the cut lengths scope.
Although the present invention by instantiation to how FPC plate plug recognition positioning method has been made the clear description of finishing, but the present invention is not limited only to described embodiment, and to reach identical purpose be contingent and all be included in the present invention by simple reprogramming.
Claims (5)
1. FPC plate plug recognition positioning method, its step is as follows:
Step 1, on the FPC plate plug edge graph picture on the CAM of the correspondence figure shelves, demarcate at least four virtual identification characteristics points, and, be set at the machine coordinates point identification characteristics point importing Laser Processing software;
Step 2, will entirely be placed on the operating platform through the harmomegathus rate FPC plate bigger than normal after manual the inspection, and fixing;
The camera resolution ratio of step 3, usefulness high accuracy dimensional standard sheet calibrating and positioning system, and this resolution ratio is done to remain unchanged when the platform level is constant apart from flat at the camera imaging plane;
Step 4, with camera each identification characteristics point of the firm and hard thing of FPC in the alignment procedures 1 respectively, catch the actual coordinate point that calculates each identification point respective operations platform;
Step 5, carry out projective transformation, and FPC plate plug is discerned location and lopsided rectification building-out from FPC plate coordinate system and lathe coordinate system;
Step 6, the parameters of laser cutting of laser cutting machine is adjusted to the best, Laser cutting FPC plate and plug profile.
2. FPC plate plug recognition positioning method according to claim 1, it is characterized in that: the identification characteristics point described in the step 1 is positioned at the edge of the plug of FPC plate, promptly on the boundary line between plug and the common flexible sheet material.
3. FPC plate plug recognition positioning method according to claim 2 is characterized in that: the Laser Processing software described in the step 1 is UV laser cutting software.
4. FPC plate plug recognition positioning method according to claim 3, it is characterized in that: the seizure calculation procedure described in the step 4 is that UV laser cutting software control CCD camera is caught the identification characteristics point, then data is fed back to UV laser cutting software and calculates.
5. FPC plate plug recognition positioning method according to claim 4, it is characterized in that: the rectification building-out described in the step 5 is for to carry out rectification building-out by laser cutting software, and with checking list comparison, obtain the rectification building-out parameter, the rectification building-out parameter is the part of parameters of laser cutting.
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| CN2011101806948A CN102248288A (en) | 2011-06-30 | 2011-06-30 | Method for identifying and positioning flexible printed circuit (FPC) board plug |
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| CN2011101806948A CN102248288A (en) | 2011-06-30 | 2011-06-30 | Method for identifying and positioning flexible printed circuit (FPC) board plug |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103111764A (en) * | 2013-03-20 | 2013-05-22 | 沈阳飞机工业（集团）有限公司 | Method for rapidly positioning laser cut part |
| CN103212860A (en) * | 2012-01-19 | 2013-07-24 | 昆山思拓机器有限公司 | Method and system for processing FPC (Flexible Printed Circuit) by laser |
| CN103220880A (en) * | 2012-01-19 | 2013-07-24 | 昆山思拓机器有限公司 | Method for improving flexible printed circuit (FPC) processing precision |
| CN104259675A (en) * | 2014-08-29 | 2015-01-07 | 广东大族粤铭激光科技股份有限公司 | Mixed visual processing method |
| CN104400217A (en) * | 2014-10-17 | 2015-03-11 | 中国电子科技集团公司第二十九研究所 | Full-automatic laser welding method and full-automatic laser welding device |
| CN104690420A (en) * | 2013-12-05 | 2015-06-10 | 大族激光科技产业集团股份有限公司 | Digital CCD-based FPC board edge positioning and processing method |
| CN105057900A (en) * | 2015-08-25 | 2015-11-18 | 深圳市镭煜科技有限公司 | Vector and product target corresponding method |
| CN105081583A (en) * | 2015-08-25 | 2015-11-25 | 深圳市镭煜科技有限公司 | Method for improving laser cutting accuracy |
| CN108363358A (en) * | 2018-02-07 | 2018-08-03 | 广州兴森快捷电路科技有限公司 | Golden finger processing positioning method, device and golden finger process equipment |
| CN108747041A (en) * | 2018-04-19 | 2018-11-06 | 广州广汽荻原模具冲压有限公司 | A kind of N Reference Alignment method of dimension laser cutting plate |
| CN109556515A (en) * | 2018-11-26 | 2019-04-02 | 深圳市万相源科技有限公司 | A kind of systematic error calibration method, system and equipment based on machine vision |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1516541A (en) * | 2002-12-26 | 2004-07-28 | 住友电工印刷电路株式会社 | Flexible printed circuit base material |
| EP1550888A1 (en) * | 2003-12-22 | 2005-07-06 | Rohm and Haas Electronic Materials, L.L.C. | Methods of forming electronic and optical components using laser ablation |
| JP2008053277A (en) * | 2006-08-22 | 2008-03-06 | Nec Corp | Apparatus and method of cutting off board |
| US20090090004A1 (en) * | 2006-04-24 | 2009-04-09 | Alps Electric Co., Ltd. | Method for manufacturing printed wiring board |
| CN101502917A (en) * | 2009-01-22 | 2009-08-12 | 华中科技大学 | Positioning and deformation-correcting method for ultraviolet laser cutting of flexible printed circuit board |
| CN101569963A (en) * | 2009-03-10 | 2009-11-04 | 深圳市大族激光科技股份有限公司 | Laser cutting forming machine and method for uncapping soft and rigid combination board |
-
2011
- 2011-06-30 CN CN2011101806948A patent/CN102248288A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1516541A (en) * | 2002-12-26 | 2004-07-28 | 住友电工印刷电路株式会社 | Flexible printed circuit base material |
| EP1550888A1 (en) * | 2003-12-22 | 2005-07-06 | Rohm and Haas Electronic Materials, L.L.C. | Methods of forming electronic and optical components using laser ablation |
| US20090090004A1 (en) * | 2006-04-24 | 2009-04-09 | Alps Electric Co., Ltd. | Method for manufacturing printed wiring board |
| JP2008053277A (en) * | 2006-08-22 | 2008-03-06 | Nec Corp | Apparatus and method of cutting off board |
| CN101502917A (en) * | 2009-01-22 | 2009-08-12 | 华中科技大学 | Positioning and deformation-correcting method for ultraviolet laser cutting of flexible printed circuit board |
| CN101569963A (en) * | 2009-03-10 | 2009-11-04 | 深圳市大族激光科技股份有限公司 | Laser cutting forming machine and method for uncapping soft and rigid combination board |
Non-Patent Citations (1)
| Title |
|---|
| 吴浩等: "紫外激光FPC切割软件的研究与开发", 《应用激光》 * |
Cited By (18)
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| CN103212860A (en) * | 2012-01-19 | 2013-07-24 | 昆山思拓机器有限公司 | Method and system for processing FPC (Flexible Printed Circuit) by laser |
| CN103220880A (en) * | 2012-01-19 | 2013-07-24 | 昆山思拓机器有限公司 | Method for improving flexible printed circuit (FPC) processing precision |
| CN103212860B (en) * | 2012-01-19 | 2015-09-30 | 昆山思拓机器有限公司 | The method and system of a kind of Laser Processing FPC |
| CN103111764B (en) * | 2013-03-20 | 2015-10-28 | 沈阳飞机工业（集团）有限公司 | A kind of method for rapidly positioning of laser cutting part |
| CN103111764A (en) * | 2013-03-20 | 2013-05-22 | 沈阳飞机工业（集团）有限公司 | Method for rapidly positioning laser cut part |
| CN104690420A (en) * | 2013-12-05 | 2015-06-10 | 大族激光科技产业集团股份有限公司 | Digital CCD-based FPC board edge positioning and processing method |
| CN104690420B (en) * | 2013-12-05 | 2016-08-17 | 大族激光科技产业集团股份有限公司 | FPC edges of boards positioning and processing method based on digital CCD |
| CN104259675B (en) * | 2014-08-29 | 2016-01-13 | 广东大族粤铭激光科技股份有限公司 | Mixed type vision processing method |
| CN104259675A (en) * | 2014-08-29 | 2015-01-07 | 广东大族粤铭激光科技股份有限公司 | Mixed visual processing method |
| CN104400217A (en) * | 2014-10-17 | 2015-03-11 | 中国电子科技集团公司第二十九研究所 | Full-automatic laser welding method and full-automatic laser welding device |
| CN105057900A (en) * | 2015-08-25 | 2015-11-18 | 深圳市镭煜科技有限公司 | Vector and product target corresponding method |
| CN105081583A (en) * | 2015-08-25 | 2015-11-25 | 深圳市镭煜科技有限公司 | Method for improving laser cutting accuracy |
| CN105081583B (en) * | 2015-08-25 | 2017-10-24 | 深圳市镭煜科技有限公司 | A kind of method for improving Precision of Laser Cutting |
| CN108363358A (en) * | 2018-02-07 | 2018-08-03 | 广州兴森快捷电路科技有限公司 | Golden finger processing positioning method, device and golden finger process equipment |
| CN108747041A (en) * | 2018-04-19 | 2018-11-06 | 广州广汽荻原模具冲压有限公司 | A kind of N Reference Alignment method of dimension laser cutting plate |
| CN108747041B (en) * | 2018-04-19 | 2021-10-26 | 广州广汽荻原模具冲压有限公司 | Reference correction method for three-dimensional laser cutting plate |
| CN109556515A (en) * | 2018-11-26 | 2019-04-02 | 深圳市万相源科技有限公司 | A kind of systematic error calibration method, system and equipment based on machine vision |
| CN109556515B (en) * | 2018-11-26 | 2019-11-12 | 深圳市万相源科技有限公司 | A kind of systematic error calibration method, system and equipment based on machine vision |
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Application publication date: 20111123 |