CN105571497A - Three-dimensional measurement system based on fiber laser linear light source - Google Patents
Three-dimensional measurement system based on fiber laser linear light source Download PDFInfo
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- CN105571497A CN105571497A CN201610150923.4A CN201610150923A CN105571497A CN 105571497 A CN105571497 A CN 105571497A CN 201610150923 A CN201610150923 A CN 201610150923A CN 105571497 A CN105571497 A CN 105571497A
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- linear motion
- motion component
- direction linear
- fiber laser
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
Abstract
The invention provides a three-dimensional measurement system, and belongs to the technical field of laser measurement. The three-dimensional measurement system comprises a working platform, supports, an installing plate, an X-direction linear motion component, a light source and high-speed camera installing component, a Y-direction linear motion component and a three-dimensional laser displacement sensor. The X-direction linear motion component is arranged on the installing plate. The light source and high-speed camera installing component is arranged on the X-direction linear motion component. The Y-direction linear motion component is arranged on the working platform. An inclined angle of projection between the X-direction linear motion component and the Y-direction linear motion component is 90 degrees. Offline analysis and online monitoring of three-dimensional solder paste printing quality can be performed so that the three-dimensional shape of a solder paste printing surface can be measured. The three-dimensional measurement system is reasonable in design, simple in structure and suitable for the optimization design of a solder paste printing quality monitoring system.
Description
Technical field
The invention belongs to three-dimensional laser field of measuring technique, specifically, is a kind of three-dimension measuring system based on optical-fiber laser linear light sorurce for monitoring paste solder printing quality.
Background technology
Pcb board Chinese is printed circuit board, and also known as printed-wiring board (PWB), being important electronic unit, is the supporter of electronic devices and components, is the carrier of electronic devices and components electrical connection.Because it adopts electron printing to make, therefore be called as printed circuit board (PCB).After electronic product is scrapped, the lead in pcb board solder is soluble in oxygen containing water.Polluted source, welding.Resolvability makes it accumulate in human body, the diseases such as infringement is neural, it is dull to cause, hypertension, anaemia, reproductive dysfunction; Concentration is excessive, may be carcinogenic.The middle period nineties 20th century Japan and European Union, just made corresponding legislation.Japan eliminates kupper solder regulation calendar year 2001 in the electronics industry, the superseded phase of European Union is 2004, the U.S. also carries out research and development lead-free product doing this respect work (using lead-free product in 2008) our country comprehensively, keeps up with the trend of the times.But due to the structure of pb-free solder solder alloy itself, make it follow kupper solder to compare, more crisp, the bad wellability of elasticity is poor, only can expands, can not shrink, easily produce the defects such as Xi Qiao, missing solder, pin hole.
Mention relevant bad of the bad middle paste solder printing of SMT (surface installation technique) technique in the report of global surface attachment association (SMTA) and account for 74%.The quality of paste solder printing technique decides the quality of SMT technique.In order to effectively analyze basic reason, the particular problem found after Reflow Soldering must be analyzed, and connect with paste solder printing flow process.According to experimental study and the initial experience implementing unleaded process, find that the wetting power of lead-free tin cream in Reflow Soldering is lower, result in tin bridge defect more general after Reflow Soldering.Due to the phenomenon of this Reflow Soldering, tin cream detection system must measure paste solder printing quality, and rule of thumb sets minimum Xi Qiao and measure, and the circuit board that may have problems is picked out, and does not flow into downstream welding process; Meanwhile, when the circuit board that exceeds standard exceeds routine, adjust printing machine in time, reduce rejection rate.Thus only have us to monitor the state of printing machine in real time, obviously could reduce the fraction defective in SMT technique, optimize typography, and improve the quality of SMT technique, reach higher yield level.
Existing SPI3D tin cream detector can be used for monitoring paste solder printing quality on the market at present, but it adopts grating image method to carry out three-dimensional measurement to tin cream, and measuring accuracy is not high, easily occurs erroneous judgement.
Summary of the invention
The present invention is directed to above-mentioned deficiency, a kind of three-dimension measuring system based on optical-fiber laser linear light sorurce is provided, can accurately monitor paste solder printing quality.
The present invention is achieved through the following technical solutions, the present invention includes workbench, bearing, installing plate, X is to linear motion component, light source and high speed camera installation component, Y-direction linear motion component, three-dimensional laser displacement transducer, workbench is marble material, the bottom of two bearings is all fixed on workbench, the top of installing plate and two bearings is consolidated, X arranges on a mounting board to linear motion component, light source and high speed camera installation component are arranged in X on linear motion component, Y-direction linear motion component is arranged on workbench, X is 90 degree to the projection angle between linear motion component and Y-direction linear motion component.
Further, in the present invention, the longitudinal section of workbench is rectangle, and the longitudinal section of bearing is I-shaped, the two ends up and down of bearing all with rib, X to linear motion component and Y-direction linear motion component by high precision driving stepper motor.
Further, measuring method of the present invention is the trigonometry based on optical-fiber laser linear light sorurce.
Whether overproof further, the present invention and software systems match, and by definition crucial point position and tolerance, can measure height and the volume of key spot welds, and provide judgement by software.
The invention has the beneficial effects as follows: the present invention only moves Y-direction moving parts in measurement gatherer process, and assembly is very stably fixed on marble platform, thus substantially increases measuring accuracy.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Label in accompanying drawing is respectively: 1, workbench, and 2, bearing, 3, installing plate, 4, to linear motion component, 5, light source and high speed camera installation component, 6, Y-direction linear motion component.
Embodiment
Elaborate to embodiments of the invention below in conjunction with accompanying drawing, the present embodiment, premised on technical solution of the present invention, give detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
embodiment
Embodiments of the invention as shown in Figure 1, the present invention includes workbench 1, bearing 2, installing plate 3, X is to linear motion component 4, light source and high speed camera installation component 5, Y-direction linear motion component 6, three-dimensional laser displacement transducer, workbench 1 is marble material, the bottom of two bearings 2 is all fixed on workbench 1, the top of installing plate 3 and two bearings 2 is consolidated, X is arranged on installing plate 3 to linear motion component 4, light source and high speed camera installation component 5 are arranged in X on linear motion component 4, Y-direction linear motion component 6 is arranged on workbench 1, X is 90 degree to the projection angle between linear motion component 4 and Y-direction linear motion component 6, the longitudinal section of workbench 1 is rectangle, and the longitudinal section of bearing 2 is I-shaped, the two ends up and down of bearing 2 all with rib, X to linear motion component 4 with Y-direction linear motion component 6 by high precision driving stepper motor.
Measuring process of the present invention is as follows: X moves to the position needing to measure to linear motion component 4; Y-direction linear motion component 6 is moved to measurement reference position; Start and measure; The Y-direction linear motion component 6 having installed detected PCB moves forward or backwards; Test macro stores three-dimensional data and analyzes and obtains test result; X moves to next measured position to linear motion component 4; Repeat the movement of Y-direction linear motion component 6 and the measurement of test macro.
The present invention is used for off-line and the on-line detecting system of paste solder printing quality, mobile platform is designed to sensor is arranged on X on linear motion component 4, test product is arranged on Y-direction linear motion component 6, in measuring process, Y-direction linear motion component 6 works, mobile platform, completes on a large scale whole board test to linear motion component 4 by the method that software splices by mobile X.
Claims (4)
1. the three-dimension measuring system based on optical-fiber laser linear light sorurce, comprise workbench (1), bearing (2), workbench (1) is marble material, the bottom of two bearings (2) is all fixed on workbench (1), it is characterized in that, also comprise installing plate (3), X is to linear motion component (4), light source and high speed camera installation component (5), Y-direction linear motion component (6), three-dimensional laser displacement transducer, installing plate (3) is consolidated with the top of two bearings (2), X is arranged on installing plate (3) to linear motion component (4), light source and high speed camera installation component (5) are arranged in X on linear motion component (4), Y-direction linear motion component (6) is arranged on workbench (1), X is 90 degree to the projection angle between linear motion component (4) and Y-direction linear motion component (6).
2. the three-dimension measuring system based on optical-fiber laser linear light sorurce according to claim 1, it is characterized in that the longitudinal section of workbench (1) is rectangle, the longitudinal section of bearing (2) is I-shaped, the two ends up and down of bearing (2) all with rib, X to linear motion component (4) and Y-direction linear motion component (6) by high precision driving stepper motor.
3. the three-dimension measuring system based on optical-fiber laser linear light sorurce according to claim 2, is characterized in that its measuring method is the trigonometry based on optical-fiber laser linear light sorurce.
4. the three-dimension measuring system based on optical-fiber laser linear light sorurce according to claim 3, it is characterized in that native system and software systems match, by definition crucial point position and tolerance, height and the volume of key spot welds can be measured, and provide whether overproof judgement by software.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610150923.4A CN105571497A (en) | 2016-03-16 | 2016-03-16 | Three-dimensional measurement system based on fiber laser linear light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610150923.4A CN105571497A (en) | 2016-03-16 | 2016-03-16 | Three-dimensional measurement system based on fiber laser linear light source |
Publications (1)
| Publication Number | Publication Date |
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| CN105571497A true CN105571497A (en) | 2016-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610150923.4A Pending CN105571497A (en) | 2016-03-16 | 2016-03-16 | Three-dimensional measurement system based on fiber laser linear light source |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1847785A (en) * | 2006-04-28 | 2006-10-18 | 南通大学 | Wide range and high precision free curved surface measuring method |
| CN101762609A (en) * | 2008-11-17 | 2010-06-30 | 苏州德天自动化科技有限公司 | Automatic optical detection device of online PCB board |
| CN201575974U (en) * | 2009-09-27 | 2010-09-08 | 上海高节自动化系统有限公司 | Circuit board image and laser detection equipment |
| CN101839700A (en) * | 2010-03-29 | 2010-09-22 | 重庆建设工业(集团)有限责任公司 | Non-contact image measuring system |
| CN202255299U (en) * | 2011-08-30 | 2012-05-30 | 东莞市盟拓光电科技有限公司 | Solder paste thickness testing device |
| CN205482807U (en) * | 2016-03-16 | 2016-08-17 | 上海好耐电子科技有限公司 | Three -dimensional measurement system based on linear light source of optical -fiber laser |
-
2016
- 2016-03-16 CN CN201610150923.4A patent/CN105571497A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1847785A (en) * | 2006-04-28 | 2006-10-18 | 南通大学 | Wide range and high precision free curved surface measuring method |
| CN101762609A (en) * | 2008-11-17 | 2010-06-30 | 苏州德天自动化科技有限公司 | Automatic optical detection device of online PCB board |
| CN201575974U (en) * | 2009-09-27 | 2010-09-08 | 上海高节自动化系统有限公司 | Circuit board image and laser detection equipment |
| CN101839700A (en) * | 2010-03-29 | 2010-09-22 | 重庆建设工业(集团)有限责任公司 | Non-contact image measuring system |
| CN202255299U (en) * | 2011-08-30 | 2012-05-30 | 东莞市盟拓光电科技有限公司 | Solder paste thickness testing device |
| CN205482807U (en) * | 2016-03-16 | 2016-08-17 | 上海好耐电子科技有限公司 | Three -dimensional measurement system based on linear light source of optical -fiber laser |
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Application publication date: 20160511 |
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