CN112404741A - Vibrating mirror calibration method for double-sided marking and double-sided marking method for plate-shaped object - Google Patents
Vibrating mirror calibration method for double-sided marking and double-sided marking method for plate-shaped object Download PDFInfo
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- CN112404741A CN112404741A CN202011371332.2A CN202011371332A CN112404741A CN 112404741 A CN112404741 A CN 112404741A CN 202011371332 A CN202011371332 A CN 202011371332A CN 112404741 A CN112404741 A CN 112404741A
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- Prior art keywords
- galvanometer
- marking
- camera
- double
- matrix
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000011159 matrix material Substances 0.000 claims abstract description 42
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 239000012780 transparent material Substances 0.000 claims description 4
- 239000003550 marker Substances 0.000 claims description 2
- 238000010330 laser marking Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 238000010009 beating Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/362—Laser etching
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/80—Analysis of captured images to determine intrinsic or extrinsic camera parameters, i.e. camera calibration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/007—Marks, e.g. trade marks
-
- 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
- G06T2207/30204—Marker
Abstract
The invention discloses a galvanometer calibration method for double-sided marking and a double-sided marking method of a plate-shaped object. The galvanometer calibration method comprises the following steps: calibrating the first galvanometer to obtain a deviation rectifying matrix of the first galvanometer; calibrating the camera to obtain a change matrix of the marking system of the camera and the first galvanometer; and calibrating the second galvanometer. The calibration of the second galvanometer comprises the following steps: a marking panel with light transmission performance is arranged between the first galvanometer and the second galvanometer, reference points which are distributed in an m-order matrix are marked on the marking panel by the second galvanometer, the reference points captured by the camera in the previous step are utilized, and the actual coordinates of the reference points relative to the camera are recorded; and acquiring a deviation correction matrix of the second galvanometer according to the actual coordinate acquired by the camera capture in the step and the theoretical coordinate of the second galvanometer. The method can quickly realize the calibration of the galvanometers positioned at two sides of the object and ensure the consistency of marking sites at the front side and the back side when the double-side marking is carried out.
Description
Technical Field
The invention relates to the technical field of laser marking, in particular to a galvanometer calibration method for double-sided marking and a double-sided marking method for a plate-shaped object.
Background
Laser marking has the advantages of high marking speed, high definition, convenience in precise marking and the like, and is widely applied to various industries such as electronics, medical treatment, automobiles and the like.
When laser marking is carried out, a laser is required to be used for generating laser, and the shooting direction of the laser is controlled by means of a vibrating mirror so as to realize marking of a specific site. Before laser marking, the galvanometer needs to be calibrated to ensure the marking accuracy.
When marking the product that needs carry out two-sided mark such as PCB board, need set up a laser instrument respectively and be connected with one respectively and shake the mirror in the product both sides of waiting to mark, therefore, in order to guarantee the yields of beating the mark, need ensure to be located the product both sides shake the mark position of the mirror and keep the uniformity. However, in the prior art, when the calibration of the double-marking mark is required, the calibration process of the double-marking galvanometer can be completed after multiple calibration adjustments, which is time-consuming, labor-consuming and extremely low in efficiency.
Disclosure of Invention
In order to overcome the above disadvantages, an object of the present invention is to provide a method for calibrating a galvanometer used for double-sided marking, which is used for calibrating a first galvanometer and a second galvanometer respectively placed on two sides of an object to be marked, and comprises the following steps: step 1: calibrating the first galvanometer to obtain a deviation rectifying matrix of the first galvanometer, and step 2: calibrating the camera to obtain a change matrix of the marking system of the camera and the first galvanometer, and step 3: the second galvanometer is calibrated,
the step 3 comprises the following steps:
step 31: a mark panel with light transmission performance is arranged between the first galvanometer and the second galvanometer, and a camera can capture marks on any side of the mark panel; step 32: marking reference points distributed in an m-order matrix on the marking panel by using a second galvanometer; step 33: capturing a reference point by using the camera in the step 2, and recording the actual coordinate of the reference point relative to the camera; step 34: and obtaining a deviation rectifying matrix of the second galvanometer according to the actual coordinate obtained in the step 33 and the theoretical coordinate of the second galvanometer in the step 32.
The galvanometer calibration method of the invention obtains the deviation correction matrix of the second galvanometer by arranging the marking panel with light transmission performance, marking a reference point on the marking panel and capturing by using the camera, and establishes the association between the first galvanometer and the second galvanometer by using the association matrix parameters of the same camera and the first galvanometer, thereby being capable of rapidly calibrating the galvanometers positioned at both sides of an object and ensuring the consistency of marking sites at both sides when double-sided marking is carried out.
Further, step 1 comprises the following steps:
step S11: marking points distributed in an n-order matrix on one side of an object to be marked by using a first galvanometer; step S12: measuring and calculating to obtain the actual coordinate position of each marking point; step S13: and obtaining a deviation correction matrix of the first galvanometer according to the actual coordinates of the step S12 and the theoretical coordinates of the first galvanometer of the step S11.
Further, step 2 comprises the steps of: step S21: capturing the pixel coordinates of the marker point of step S11 with a camera; step S22: and calculating to obtain a change matrix of the marking system of the camera and the first galvanometer according to the actual coordinates of the marking points and the pixel coordinates captured by the camera.
Further, the camera and the first galvanometer are arranged on the same side of the object to be marked.
Furthermore, the marking panel is made of transparent materials. Thus, the capture of fiducial points by the camera is facilitated.
Further, m is equal to n.
The invention also provides a double-sided marking method of a plate-shaped object, which comprises the following steps of 101: respectively arranging a front vibrating mirror and a back vibrating mirror on two sides of a plate-shaped object, marking marks distributed in an n-order matrix on the front surface of the plate-shaped object by using the front vibrating mirrors, and obtaining a deviation correcting matrix of the front vibrating mirrors according to actual coordinates of the marks and theoretical coordinates of the front vibrating mirrors; step 102: capturing the position of the mark point marked on the surface of the plate-shaped object in the step 101 by using a camera, and obtaining a change matrix of a marking system of the camera and a front galvanometer; step 103: replacing the plate-shaped object with a mark panel made of transparent material, and marking reference points distributed in an m-order matrix on the mark panel by using a reverse side galvanometer; step 104: capturing the reference points of the step 103 by using a camera, and recording the actual coordinates of the reference points relative to the camera; step 105: obtaining a deviation correction matrix of the reverse side galvanometer according to the actual coordinates of the step S104 and the theoretical coordinates of the reverse side galvanometer of the step S103; step 106: and (5) taking down the marking panel, putting the plate-shaped object to be marked between the front vibrating mirror and the back vibrating mirror again, and marking the back surface of the plate-shaped object to be marked by using the deviation correcting matrix of the back vibrating mirror obtained in the step 105.
Therefore, the method for marking the two sides of the plate-shaped object can quickly finish the calibration of the galvanometers positioned at the two sides of the object and ensure the consistency of the marking points on the two sides, thereby greatly improving the efficiency and the accuracy of marking the two sides of the object.
Further, the camera and the front galvanometer are both arranged on the same side of the plate-shaped object to be marked.
Further, m is equal to n.
Detailed Description
The following detailed description of the preferred embodiments of the present invention is provided to enable those skilled in the art to more easily understand the advantages and features of the present invention, and to clearly and clearly define the scope of the present invention.
The galvanometer calibration method for marking on both sides is used for calibrating the front galvanometer and the back galvanometer which are respectively placed on both sides of an object to be marked. The invention is explained by taking the object to be marked as a PCB as an example, and obviously, the method of the invention is also suitable for marking other objects needing double-sided marking.
The double-sided marking method of the PCB comprises the following steps:
1. respectively arranging a front vibrating mirror and a back vibrating mirror on two sides of a PCB (printed circuit board), arranging a camera and the front vibrating mirror on one side close to the front of the PCB, and marking marks distributed in a 3-order matrix on the front of the PCB by using the front vibrating mirrors, wherein the number of the marks is 9;
2. and measuring the relative positions of other marking points and the marking point positioned in the center by using a caliper based on the marking point positioned in the center, determining the actual coordinate position of each marking point, and measuring the difference values in the X direction, the Y direction and the Z direction when measuring the position of each marking point.
3. Constructing a deviation correction matrix of the front vibrating mirror by using the actual coordinate position of each mark point in the step 2 and the theoretical coordinate value of the front vibrating mirror;
4. capturing the position of the mark point printed on the surface of the PCB board in the step 1 by using a camera, and constructing a change matrix of the marking system of the camera and the front galvanometer;
5. replacing the PCB board with a transparent marking panel, adjusting the focal lengths of the front galvanometer and the back galvanometer relative to the marking panel, adjusting a light source to enable a camera to capture the marking position of the back galvanometer, and marking reference points distributed in a 3-order matrix on the marking panel by using the back galvanometer;
6: capturing the reference points in the step 5 by using a camera, and recording the actual coordinates of the reference points relative to the camera;
7. obtaining a deviation correction matrix of the reverse side galvanometer according to the actual coordinates in the step 6 and the theoretical coordinates of the reverse side galvanometer in the step 5;
8. and (4) taking down the marking panel, putting the PCB to be marked between the front vibrating mirror and the back vibrating mirror again, and marking the reverse side of the PCB to be marked by using the deviation correcting matrix of the back vibrating mirror obtained in the step (7).
In this embodiment, the deviation rectifying matrix of the front galvanometer in step 3, the change matrix in step 4, and the deviation rectifying matrix in step 7 are all constructed by orange software.
The marking panel of the embodiment is a glass panel, and may also be made of any other material with a good light-transmitting effect, such as a plastic material.
The matrix of the marking points and the reference points is 3 orders, which can be obviously any order, and preferably, the orders of the marking points and the reference points are consistent and are odd orders.
The above embodiments are merely illustrative of the technical concept and features of the present invention, and the present invention is not limited thereto, and any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (9)
1. A galvanometer calibration method for double-sided marking is used for calibrating a first galvanometer and a second galvanometer which are respectively placed on two sides of an object to be marked, and is characterized by comprising the following steps:
step 1: calibrating the first galvanometer to obtain a deviation rectifying matrix of the first galvanometer,
step 2: calibrating the camera to obtain a change matrix of the marking system of the camera and the first galvanometer,
and step 3: the second galvanometer is calibrated,
the step 3 comprises the following steps:
step 31: a mark panel with light transmission performance is arranged between the first galvanometer and the second galvanometer, and a camera can capture marks on any side of the mark panel;
step 32: marking reference points distributed in an m-order matrix on the marking panel by using a second galvanometer,
step 33: capturing a reference point by using the camera in the step 2, and recording the actual coordinate of the reference point relative to the camera;
step 34: and obtaining a deviation rectifying matrix of the second galvanometer according to the actual coordinate obtained in the step 33 and the theoretical coordinate of the second galvanometer in the step 32.
2. The galvanometer calibration method for double-sided marking according to claim 1, characterized in that step 1 comprises the steps of:
step S11: marking points distributed in an n-order matrix on one side of an object to be marked by using a first galvanometer;
step S12: measuring and calculating to obtain the actual coordinate position of each marking point;
step S13: and obtaining a deviation correction matrix of the first galvanometer according to the actual coordinates of the step S12 and the theoretical coordinates of the first galvanometer of the step S11.
3. The galvanometer calibration method for double-sided marking according to claim 2, characterized in that step 2 comprises the steps of:
step S21: capturing the pixel coordinates of the marker of step S11 with a camera;
step S22: and calculating to obtain a change matrix of the marking system of the camera and the first galvanometer according to the actual coordinates of the marking points and the pixel coordinates captured by the camera.
4. The galvanometer calibration method for double-sided marking according to claim 1, characterized in that the camera is arranged on the same side of the object to be marked as the first galvanometer.
5. The galvanometer calibration method for double-sided marking according to claim 1, wherein the marking panel is a panel made of a transparent material.
6. The galvanometer calibration method for double-sided marking according to claim 5, wherein m is equal to n.
7. A double-sided marking method of a plate-shaped object is characterized by comprising the following steps,
step 101: respectively arranging a front vibrating mirror and a back vibrating mirror on two sides of a plate-shaped object, marking marks distributed in an n-order matrix on the front of the plate-shaped object by using the front vibrating mirrors, and obtaining a deviation correcting matrix of the front vibrating mirrors according to actual coordinates of the marks and theoretical coordinates of the front vibrating mirrors;
step 102: capturing the position of the mark point marked on the surface of the plate-shaped object in the step 101 by using a camera, and obtaining a change matrix of a marking system of the camera and a front galvanometer;
step 103: replacing the plate-shaped object with a mark panel made of transparent material, and marking reference points distributed in an m-order matrix on the mark panel by using a reverse side galvanometer;
step 104: capturing the reference points of the step 103 by using a camera, and recording the actual coordinates of the reference points relative to the camera;
step 105: obtaining a deviation correction matrix of the reverse mirror according to the actual coordinates of the step S104 and the theoretical coordinates of the reverse mirror in the step S103;
step 106: and (5) taking down the marking panel, putting the plate-shaped object to be marked between the front vibrating mirror and the back vibrating mirror again, and marking the back surface of the plate-shaped object to be marked by using the deviation correcting matrix of the back vibrating mirror obtained in the step 105.
8. Double-sided marking method for plate-like objects according to claim 7, characterized in that the camera and the front side galvanometer are both arranged on the same side of the plate-like object to be marked.
9. Double-sided marking method for plate-like objects according to claim 7, characterized in that m is equal to n.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011371332.2A CN112404741A (en) | 2020-11-30 | 2020-11-30 | Vibrating mirror calibration method for double-sided marking and double-sided marking method for plate-shaped object |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011371332.2A CN112404741A (en) | 2020-11-30 | 2020-11-30 | Vibrating mirror calibration method for double-sided marking and double-sided marking method for plate-shaped object |
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| Publication Number | Publication Date |
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| CN112404741A true CN112404741A (en) | 2021-02-26 |
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| CN202011371332.2A Pending CN112404741A (en) | 2020-11-30 | 2020-11-30 | Vibrating mirror calibration method for double-sided marking and double-sided marking method for plate-shaped object |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114309976A (en) * | 2021-12-23 | 2022-04-12 | 大族激光科技产业集团股份有限公司 | Laser processing method, laser processing equipment and storage medium |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0502688D0 (en) * | 2004-06-18 | 2005-03-16 | Japan Aerospace Exploration | Transparent camera calibration tool for camera calibration and calibration method thereof |
| CN105345254A (en) * | 2015-12-04 | 2016-02-24 | 湖北工业大学 | Calibration method for positional relation between paraxial type visual system and laser vibrating mirror machining system |
| CN106003714A (en) * | 2016-05-27 | 2016-10-12 | 上海联泰科技股份有限公司 | Multi-galvanometer calibration method, printing method and optical system adopted for 3D printing |
| CN207604008U (en) * | 2017-11-21 | 2018-07-10 | 广东永创鑫电子有限公司 | A kind of double-faced flexible wiring board prints automatic correction device |
| CN208467515U (en) * | 2018-06-27 | 2019-02-05 | 安德激光智能装备（广东）有限公司 | A kind of laser double-surface marking device |
| CN110508930A (en) * | 2019-08-22 | 2019-11-29 | 湖北工业大学 | The localization method of PCB on-line marking |
-
2020
- 2020-11-30 CN CN202011371332.2A patent/CN112404741A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0502688D0 (en) * | 2004-06-18 | 2005-03-16 | Japan Aerospace Exploration | Transparent camera calibration tool for camera calibration and calibration method thereof |
| CN105345254A (en) * | 2015-12-04 | 2016-02-24 | 湖北工业大学 | Calibration method for positional relation between paraxial type visual system and laser vibrating mirror machining system |
| CN106003714A (en) * | 2016-05-27 | 2016-10-12 | 上海联泰科技股份有限公司 | Multi-galvanometer calibration method, printing method and optical system adopted for 3D printing |
| CN207604008U (en) * | 2017-11-21 | 2018-07-10 | 广东永创鑫电子有限公司 | A kind of double-faced flexible wiring board prints automatic correction device |
| CN208467515U (en) * | 2018-06-27 | 2019-02-05 | 安德激光智能装备（广东）有限公司 | A kind of laser double-surface marking device |
| CN110508930A (en) * | 2019-08-22 | 2019-11-29 | 湖北工业大学 | The localization method of PCB on-line marking |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114309976A (en) * | 2021-12-23 | 2022-04-12 | 大族激光科技产业集团股份有限公司 | Laser processing method, laser processing equipment and storage medium |
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Effective date of registration: 20210831 Address after: 215000 m3-103-2, micro system Park, No.2, Peiyuan Road, science and Technology City, Suzhou high tech Zone, Suzhou City, Jiangsu Province Applicant after: Suzhou golden orange Laser Technology Co.,Ltd. Address before: Room 426-7, 4th floor, Yuanhe building, 959 Jiayuan Road, Yuanhe street, Xiangcheng District, Suzhou City, Jiangsu Province 215000 Applicant before: Suzhou Linglu Intelligent Technology Co.,Ltd. |