CN203100678U - Line scanning vision measurement system measuring high accuracy dimension - Google Patents
Line scanning vision measurement system measuring high accuracy dimension Download PDFInfo
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- CN203100678U CN203100678U CN 201320022027 CN201320022027U CN203100678U CN 203100678 U CN203100678 U CN 203100678U CN 201320022027 CN201320022027 CN 201320022027 CN 201320022027 U CN201320022027 U CN 201320022027U CN 203100678 U CN203100678 U CN 203100678U
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Abstract
The utility model relates to a vision measurement system which is mainly used for measuring the mechanical dimension of a stamping part of high precision at a high speed. The line scanning vision measurement system measuring the high accuracy dimension at a high speed comprises a servo system, a line scanning camera, a line scanning telecentric lens, a light source, a programmable controller, a transmission system, a computer which is provided with vision detection software and programmable controller communication software and a sensor. The line scanning vision measurement system is characterized in that the line scanning camera is a 4K line scanning camera; the connection line of the center line of the line scanning camera and the center joint of the light source is vertical to a to-be-detected area of the transmission belt system; the line scanning camera, the light source, a motor of the transmission belt system and the sensor are respectively connected with the programmable controller; and the line scanning camera is connected with the computer. According to the utility model, only 1.2 seconds are taken to complete the dimension measurement of a product, and the efficiency is 3000 products per hour.
Description
Technical field
The utility model relates to a cover vision measurement system, mainly applies to the mechanical dimension of measuring high-accuracy stamping parts at a high speed.
Background technology
Detection technique is the basis of workpiece, along with development of science and technology, the quality requirements of product is improved constantly.And the conventional size measurement is mainly the contact detection.But traditional survey instrument can't satisfy the measurement of the uneven and irregular component of some product, and other cost height and speed as three-coordinates measuring machine are slow.The special measurement mould is influenced by the manufacturing accuracy of itself in addition, and long-time the use brought wearing and tearing, simultaneously main manually-operated.
Simultaneously, along with the rise of electron trade, at the hard disk of computer, the mechanical fitting in the products such as mobile phone adopts stamping parts in a large number.And every stamping machine will be produced a workpiece p.s. at least, has every day more than 80,000 workpiece to produce.Require higher this moment to measuring system, require to reach 2 seconds at least with regard to Size Measuring System and measure a product.
Because stamping parts in process of production, product may produce the quality problems of distortion to the part flanging of stamping parts after shake is ground.Problem points such as the mode efficient that conventional size is measured is low, labour intensity height exist.Current nearly all company requires the product export qualification rate to reach 100%, and the traditional detection method is subjected to the human factor influence, can not guarantee the qualification rate of product.Quote use so detect vision system automatically.But the vision system speed of general area array cameras reaches requirement of client relatively, but precision does not reach customer requirement.
Summary of the invention
The purpose of this utility model is to provide a cover line sweep vision measurement system, to satisfy high precision and dimensional measurement demand at a high speed.
Concrete technical scheme of the present utility model is:
A kind of line sweep vision measurement system to high precision and dimensional measurement at a high speed, comprise conveyer belt system 5, line scan camera 2, line sweep telecentric mirror head 8, light source 7, Programmable Logic Controller 1, be equipped with vision detection software and with computer 4, sensor 11 and the XY axis servomotor 12 of Programmable Logic Controller communication software;
Described line scan camera 2 is 4K line scan cameras, the center line of line scan camera 2 and bilateral telecentric mirror head 8 central lines, and with the regions perpendicular to be detected of the line and the conveyer belt system 5 of light source 7 centres joint;
The motor of described line scan camera 2, light source 7, conveyer belt system 5, XY axis servomotor 12, sensor 11 are connected with Programmable Logic Controller 1 respectively;
Described light source 7 is a tunnel type line sweep light source, and the centre on its top is a wide slit of 3 millimeters, and the both sides, bottom are upwards irradiation of light emitting diode; The inwall of the cambered surface of light source body scribbles reflectorised paint; In the middle of the bottom is blank; The light emitting diode wavelength of both sides, light source 7 bottom is identical.
Described conveyer belt system 5 is driven by inverter motor, and guarantees continuously to transport tool 10.
Described sensor 11 is a photoelectric sensor.
Described Programmable Logic Controller 1 is connected with hub 3, can be connected with some computers 4 by hub 3.
Described line sweep telecentric mirror head is installed on the line scan camera, between light source and camera.
Described servo-drive system is that X, Y-axis are servo, drives screw mandrel by servomotor, and camera then is fixed on the X-axis, is driven into picture by X-axis.
During work, tool 10(to be detected is had the product that 30 need are measured) be placed on to be detected regional 9 of travelling belt 5; Light source 7 shines downwards, guarantees that product has enough brightness; Line scan camera 2 is installed the top, line scan camera 2 center lines and bilateral telecentric mirror head 8 central lines, and vertical with the line of light source 7 centres joint with travelling belt; The position that sensor 11 testing products are all; Servo-drive system drives line scan camera and carries out imaging; The motor of line scan camera 2 trigger pips, light source 7, travelling belt 5, XY axis servomotor 12, sensor 11 all are connected with Programmable Logic Controller 1, and everything is controlled by Programmable Logic Controller 1.The testing result of vision system sends to Programmable Logic Controller 1 by computer 4 by serial port protocol.
Image-forming principle of the present utility model is: after the anchor clamps that have detected material arrived accurate position, the X-axis servo-drive system drove camera and detected material is carried out the line sweep imaging one by one, finishes up to all product measurements.The line scan camera of camera utilization 4K.Its measuring accuracy=width/every capable pixel=40 millimeters/4000 pixel=0.01 millimeter every pixel.Camera lens adopts bilateral telecentric mirror head, guarantees not distortion of imaging, guarantees that promptly dimensional measurement is reliable.
Advantage of the present utility model:
1, can be widely used in automatic production line, accomplish the online vision measurement that do not carry out with not shutting down, do not have artificial intervention; Also can apply to a plurality of products and almost measure synchronously, realize measuring at a high speed;
2, use the machine vision linear scanning system to replace manual detection;
3, under high speed detection, realize work in 24 hours;
4, can carry out 100% to product and detect, ex factory pass rate reaches 100%;
5, reduce production costs, the efficient of an equipment is equivalent to 20 employees' workload;
6, can carry out seamless link with other travelling belts, satisfy most of client's production demand;
7, high precision (measuring accuracy is up to more than 0.01 millimeter) vision measurement;
8, at a high speed, efficiently, the production capacity of 8 hours every days reaches 24000 times; Except that maintaining, can realize work in 24 hours;
9, mechanical arm is rejected substandard product automatically.
Description of drawings
Fig. 1 is the utility model structural representation.
Among the figure: 1, Programmable Logic Controller, 2, line scan camera, 3, hub, 4, computer, 5, conveyer belt system, 6, testing product (discharging area), 7, light source, 8, camera lens, 9, product (imaging area) in the detection, 10, product to be detected (district to be checked), 11, sensor, 12, the XY axis servomotor.
Embodiment
Below in conjunction with accompanying drawing and example the utility model is described:
Embodiment 1: shown in accompanying drawing 1, a kind of line sweep vision detection system to high precision and dimensional measurement at a high speed, comprise conveyer belt system 5, line scan camera 2, camera lens 8, light source 7, Programmable Logic Controller 1, be equipped with vision detection software and with the computer 4 and the photoelectric sensor 11 of Programmable Logic Controller communication software;
Described line scan camera 2 is 4K line scan cameras, the center line of line scan camera 2 and bilateral telecentric mirror head 8 central lines, and with the regions perpendicular to be detected of the line and the conveyer belt system 5 of light source 7 centres joint;
The motor of described line scan camera 2, light source 7, conveyer belt system 5, sensor 11 are connected with Programmable Logic Controller 1 respectively; Line scan camera 2 is connected with computer 4.
Described light source 7 is a tunnel type line sweep light source, and the centre on its top is a wide slit of 3 millimeters, and the both sides, bottom are upwards irradiation of light emitting diode; The inwall of the cambered surface of light source body scribbles reflectorised paint; In the middle of the bottom is blank; The light emitting diode wavelength of both sides, light source 7 bottom is identical.
Described conveyer belt system 5 is driven by inverter motor, is divided into testing product 6(discharging area by workshop section), product 9(imaging area in the detection), product 10(to be detected district to be checked).This guarantees continuously to transport tool 10.
Described Programmable Logic Controller 1 is connected with hub 3, is connected with some computers 4 by hub 3.
The utility model is successfully applied to the fecund product with the line sweep vision detection system and detects simultaneously, and main utilization is carried out dimensional measurement by vision system to stamping parts after grinding.Its detection width is 40 millimeters, detects the theoretical infinite length of length.The precision height is 0.01 millimeter every pixel.Line-scanning Image Acquisition System can satisfy guarantee high-precision imaging requirements simultaneously under high speed.Utilize the existing cell-shell of manufacturer (250X400 millimeter)----can put into 50 products, can successively do vision measurement product.Camera line frequency 17K hertz, the servo acceleration and deceleration time is 0.02 second.Finished the imaging action in such 0.6 second, 0.3 second visual processes time, call duration time 0.2 second.Therefore only need just to finish for 1.2 seconds the dimensional measurement of a product, efficient per hour reaches 3000 products.Can be widely used in automatic production line, accomplish the online vision-based detection of not carrying out with not shutting down, do not have artificial intervention; Use the machine vision linear scanning system to replace manual detection; Under high speed detection, realize work in 24 hours; Can carry out 100% to product and detect, ex factory pass rate reaches 100%; Reduce production costs widely, an equipment is equivalent to 20 employees' workload; And can carry out seamless link with other travelling belts, satisfy most of client's production demand; Most importantly the utility model can be done the outward appearance detection to the product of high precision (measuring accuracy is up to 0.01 millimeter).
Claims (7)
1. line sweep vision measurement system to high precision and dimensional measurement at a high speed, comprise servo-drive system, line scan camera, line sweep telecentric mirror head, light source, Programmable Logic Controller, transfer system, be equipped with vision detection software and with the computer and the sensor of Programmable Logic Controller communication software; It is characterized in that,
Described line scan camera is the 4K line scan camera, the line of the center line of line scan camera and the light source centre joint and the regions perpendicular to be detected of conveyer belt system;
The motor of described line scan camera, light source, conveyer belt system, sensor are connected with Programmable Logic Controller respectively;
Line scan camera is connected with computer.
2. a kind of line sweep vision detection system according to claim 1 to high precision and dimensional measurement at a high speed, it is characterized in that, described light source is a tunnel type line sweep light source, and the centre on its top is a wide slit of 3 millimeters, and the both sides, bottom are upwards irradiation of light emitting diode; The inwall of the cambered surface of light source body scribbles reflectorised paint; In the middle of the bottom is blank; The light emitting diode wavelength of both sides, light source bottom is identical.
3. a kind of line sweep vision measurement system to high precision and dimensional measurement at a high speed according to claim 1 is characterized in that described conveyer belt system is driven by inverter motor.
4. a kind of line sweep vision measurement system to high precision and dimensional measurement at a high speed according to claim 1 is characterized in that described sensor is a photoelectric sensor.
5. a kind of line sweep vision measurement system to high precision and dimensional measurement at a high speed according to claim 1 is characterized in that described Programmable Logic Controller is connected with hub, is connected with some computers by hub.
6. a kind of line sweep vision measurement system to high precision and dimensional measurement at a high speed according to claim 1 is characterized in that described line sweep telecentric mirror head is installed on the line scan camera, between light source and camera.
7. a kind of line sweep vision measurement system to high precision and dimensional measurement at a high speed according to claim 1 is characterized in that described servo-drive system is that X, Y-axis are servo, drives screw mandrel by servomotor, and camera then is fixed on the X-axis, is driven into picture by X-axis.
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| CN 201320022027 CN203100678U (en) | 2013-01-16 | 2013-01-16 | Line scanning vision measurement system measuring high accuracy dimension |
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| CN 201320022027 CN203100678U (en) | 2013-01-16 | 2013-01-16 | Line scanning vision measurement system measuring high accuracy dimension |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105066876A (en) * | 2015-07-16 | 2015-11-18 | 苏州金牛精密机械有限公司 | PCB tester |
| CN107192340A (en) * | 2017-07-26 | 2017-09-22 | 广东理工学院 | A kind of NI Vision Builder for Automated Inspection of measured hole, the position of groove and physical dimension |
| CN107957245A (en) * | 2017-12-29 | 2018-04-24 | 江苏宏宝锻造股份有限公司 | Engine link dimension measuring device and its measuring method based on machine vision |
| TWI624644B (en) * | 2016-11-30 | 2018-05-21 | 英業達股份有限公司 | Measurement fixture for measuring dimensions of a blade server |
| CN108981574A (en) * | 2018-10-10 | 2018-12-11 | 索菲亚家居湖北有限公司 | Product size on-line measuring device |
| CN109443252A (en) * | 2019-01-05 | 2019-03-08 | 深圳市清华苑工程结构鉴定有限公司 | A kind of concrete core sample system for detecting verticality |
| CN110726379A (en) * | 2019-11-13 | 2020-01-24 | 征图新视(江苏)科技股份有限公司 | High-precision imaging method for irregular product contour |
-
2013
- 2013-01-16 CN CN 201320022027 patent/CN203100678U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105066876A (en) * | 2015-07-16 | 2015-11-18 | 苏州金牛精密机械有限公司 | PCB tester |
| TWI624644B (en) * | 2016-11-30 | 2018-05-21 | 英業達股份有限公司 | Measurement fixture for measuring dimensions of a blade server |
| CN107192340A (en) * | 2017-07-26 | 2017-09-22 | 广东理工学院 | A kind of NI Vision Builder for Automated Inspection of measured hole, the position of groove and physical dimension |
| CN107957245A (en) * | 2017-12-29 | 2018-04-24 | 江苏宏宝锻造股份有限公司 | Engine link dimension measuring device and its measuring method based on machine vision |
| CN108981574A (en) * | 2018-10-10 | 2018-12-11 | 索菲亚家居湖北有限公司 | Product size on-line measuring device |
| CN109443252A (en) * | 2019-01-05 | 2019-03-08 | 深圳市清华苑工程结构鉴定有限公司 | A kind of concrete core sample system for detecting verticality |
| CN109443252B (en) * | 2019-01-05 | 2020-07-14 | 深圳市清华苑工程结构鉴定有限公司 | Concrete core appearance is with straightness detecting system that hangs down |
| CN110726379A (en) * | 2019-11-13 | 2020-01-24 | 征图新视(江苏)科技股份有限公司 | High-precision imaging method for irregular product contour |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130731 Termination date: 20140116 |