CN1645041A - Axial workpiece bending deformed planar array CCD measuring method and apparatus - Google Patents
Axial workpiece bending deformed planar array CCD measuring method and apparatus Download PDFInfo
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- CN1645041A CN1645041A CN 200510032654 CN200510032654A CN1645041A CN 1645041 A CN1645041 A CN 1645041A CN 200510032654 CN200510032654 CN 200510032654 CN 200510032654 A CN200510032654 A CN 200510032654A CN 1645041 A CN1645041 A CN 1645041A
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Abstract
A method for measuring the bending deflection of shaft parts includes using a planar array to collect image data of shaft parts, sending collected data to I/O card and then to process control computer for obtaining deflection parameter of the shaft parts after data is processed. The device for realizing the method consists of image collection and process system including planar array CCD, back light source, I/O card and process control computer as well as parts rotary control system including gear box, stepping motor and coder.
Description
Technical field
The present invention relates to a kind of workpiece bending deformed measuring method, especially axial workpiece bending deformed planar array CCD measuring method, the invention still further relates to a kind of axial workpiece bending deformed measurement mechanism.
Background technology
In the machine-building process, axial workpiece all can produce flexural deformation after cut or thermal treatment, and the flexural deformation that the alignment axial workpiece produces is important procedure in the mechanical processing process.High-precision alignment both can reduce allowance for finish, the rate of also can reducing the number of rejects and seconds.Diastrophic measuring method and measuring accuracy are the keys of alignment axial workpiece.Straightener mainly is exactly the alignment processing that is used for finishing axial workpieces such as axle, pipe, rod.The straightener detection system should be able to accurately detect the bending deformation quantity and the deformation position of axial workpiece, for alignment processing provides foundation.Present accurate straightener detection system generally adopts multichannel displacement detection method, promptly along several displacement transducers of axial installation of part, drive part with axial drive means and rotate a circle, meanwhile, each sensor detects the contour curve data in cross section separately online.These data are sent, are sent into computing machine after the processing such as filtering, amplification through change, try to achieve the actual home position in each cross section by minimum two-multiply law, utilize interpolation algorithm to describe out the axis bending situation of part again.But there is the factor that has a strong impact on accuracy of detection in this straightener detection system, and is non-linear as sensor performance, direction judgement, residual voltage at zero and transmission circuit.The solution of gathering is by gathering selected sensor in circuit, preferred excited frequency, measures such as design ideal diode circuit at present.But such straightener detection system is owing to only adopt limited several position sensor directly to contact with part, belong to a contact measurement, stochastic error is big, the measuring accuracy instability, absolute error generally is greater than 0.01mm, can not satisfy high-accuracy axial workpiece and detect requirement.In addition, it can not realize non-contact detecting and omnidistance the detection this system, can not satisfy the needs of high-acruracy survey and alignment.
Summary of the invention
The objective of the invention is for overcome above-mentioned multiple sensor displacement detection method exist check point few, with detection method defectives such as tested part contacts and the not high problem of consequent measuring accuracy, a kind of area array CCD (Charge Coupled Devices, charge-coupled image sensor) diastrophic method and apparatus of Parts Measurement is provided.
CCD in the development of picture induction application facet has rapidly become one of emerging field active, the most fruitful in modern optical electronics and the modern surveying technology.The CCD volume is little, and is in light weight, and power consumption is little, low and anti-the burning of operating voltage, and at resolving power, dynamic range, sensitivity, the superior performance of aspects such as real-time Transmission and self-scanning.But during as the object of large-sizes such as axial workpiece, the problem of resolving power and pixel value is appearring with the CCD precision measurement.Photograph the larger area object with wanting high resolution, need very big pixel value, CCD does not on the market still satisfy requirement at present.Most Vision Builder for Automated Inspection is used line array CCD to add mechanical scanning mechanism camera and is obtained image.The advantage of line array CCD is the resolving power height, but this method measuring speed is fast inadequately, can not satisfy industrial application requirements during on-line measurement, and the equipment more complicated needs scan control circuit, drives connecting gear etc. simultaneously.Mechanism drives the speed of cam movement and the necessary strict synchronism of frequency of CCD self-scanning line feed pulse in addition.Therefore, this adaptation of methods is strong inadequately.
Even but yet do not report with the diastrophic method of Parts Measurement by using line array CCD to obtain the testee image, do not retrieve relevant patented technology yet.
The present invention is overcoming on the basis that utilizes line array CCD to obtain testee image shortcoming, proposes to utilize the flexural deformation of area array CCD Parts Measurement.The speed that area array CCD obtains the testee two-dimensional signal improves greatly, need not scan control circuit, drives connecting gear etc., and equipment is simple relatively, and measuring speed improves.Principle of the present invention is to utilize area array CCD to gather the characteristics that tested part image and each sub-picture have certain-length fast, all outer profile images of axle that use image reconstruction and Duo Tu splicing to gather are realized seamless link in order, the application image disposal route is depicted the complete axial line that can represent the bending shaft distortion again, calculate the flexural deformation parameter, for alignment provides the exact figure foundation.
Purpose of the present invention realizes by following method: the view data of axial workpiece is gathered by at least one area array CCD, after the view data of being gathered is sent to the I/O card, the input industrial computer after industrial computer is handled described view data, is exported described axial workpiece deformation parameter then.The multiscale analysis of image processing techniques application wavelet transformation extracts the edge image of different edge directions, utilizes Mathematical Morphology Method to carry out image mosaic again.
Said method can realize by the axial workpiece bending deformed planar array CCD measurement mechanism, and this device comprises image acquisition and disposal system, tested axial workpiece rotation control system.Image acquisition and disposal system and tested axial workpiece rotation control system all concentrate on the straightener frame (10).Image acquisition and disposal system comprise area array CCD, backlight, I/O card, industrial computer, and area array CCD and backlight lay respectively at tested axial workpiece both sides, and area array CCD links to each other with the I/O card by signal wire, and I/O card and industrial computer join; Tested axial workpiece rotation control system comprises wheel box, stepper motor, scrambler, and wheel box one end joins by top and tested axial workpiece, and the other end and stepper motor join, and stepper motor also links to each other with scrambler.Area array CCD joins with ball screw assembly,, also it links to each other along the stepper motor that measured axis class part axial moves ball screw assembly, with control.
During measurement, when axial workpiece rotated by certain five equilibrium angle under the effect of control motor vertically, area array CCD was also made the outer profile image of gun and continuous acquisition axle vertically under the control motor-driven.To the outer profile image sequence of the axle of each anglec of rotation, all gather corresponding angle position by the scrambler of control on the motor, constitute one group of corresponding relation data and send into industrial computer.And axle outer profile image data synchronous detection behind image reconstruction of gathering the radial beat eccentricity and the home position in each measured axis cross section.
Can require and the design of part feature according to accurate straightener detection system, to one or more CCD are installed, circumferentially turn round the drive unit drives part in the testing process and rotate a circle along workpiece spindle.The CCD that installs in each circumferential detection position, fast moving continuous acquisition image vertically, synchronous detection goes out the radial beat eccentricity and the home position in each measured axis cross section after the image amalgamation.So rotate a circle, compare by analysis again, the axial bending situation of calculating and definite whole part.
Advantage of the present invention:
1, area array CCD obtains tested axial workpiece bending deformed data speed height, need not scan control circuit, drives connecting gear etc., and equipment is simple relatively, and measuring speed is fast.
2, the suitable tested shaft part size scope of measuring system is big.
3, measuring system adopts full-scale scope non-cpntact measurement to tested axial workpiece, and the measuring accuracy height can reach 0.001mm.
4, measurement mechanism is simple, and required parts all can buy on the market.
Description of drawings
Fig. 1 axial workpiece bending deformed planar array CCD measurement mechanism structural representation.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
As shown in Figure 1, the axial workpiece of surveying is a major axis, and major axis distortion area array CCD measurement mechanism comprises image acquisition and disposal system, tested major axis rotation control system.Image acquisition and disposal system and tested axial workpiece rotation control system are by on the straightener frame 10.Image acquisition and disposal system comprise area array CCD 13, backlight 15, I/O card 6, industrial computer 4.Tested major axis is supporting by top 3 and top 7, and tailstock 2 is fixed on the straightener frame 10 with wheel box 8, and area array CCD 13 and backlight 15 are placed on tested bucket step axle both sides respectively.Area array CCD 13 is connected with stepper motor 9, is positioned on the ball screw assembly, 5, and stepper motor 9 drives ball screw assembly, 5 along tested major axis axially-movable.Area array CCD 13 links to each other with I/O card 6 by signal wire, and I/O card 6 joins with industrial computer 4.Tested major axis rotation control system is made up of wheel box 8, stepper motor 12, scrambler 11, and wheel box 8 one ends join with tested major axis 14 by top 7, and the other end and stepper motor 12 join, and stepper motor 12 also links to each other with scrambler 11.Stepper motor 12 drives wheel box 8 makes tested major axis 14 with suitable speed revolution, and behind every rotation 10 degree, stepper motor 9 drive surface battle array CCD13 are fast moving continuous acquisition view data vertically.Scrambler 11 links to each other with stepper motor 12 main shafts through shaft coupling, measures the anglec of rotation and position thus.The consecutive image sequence and the data such as the anglec of rotation and position of area array CCD 13 fast moving collection are vertically sent industrial computer 4 by I/O card 6, carry out radial beat eccentricity and the home position that synchronous detection behind the image reconstruction goes out each measured axis cross section by industrial computer 4.The image processing techniques of industrial computer is the edge image that the multiscale analysis technology of employing wavelet transformation extracts different edge directions, adopts Mathematical Morphology Method to carry out image mosaic again.So rotate a circle, compare by analysis again, the axial bending situation of calculating and definite whole part.
Tested axial workpiece is three step axial workpieces.On each step, use an area array CCD, use 3 area array CCDs to join with ball screw assembly, respectively altogether, 3 ball screw assembly,s all link to each other with support 1, also join simultaneously with stepper motor 9, stepper motor 9 drives 3 area array CCDs 13 along tested three step axial workpiece axially-movables, the different diameter of axle view data of continuous acquisition.Other device is with embodiment 1, and measuring method is also with embodiment 1.
Claims (4)
1, a kind of axial workpiece bending deformed planar array CCD measuring method, it is characterized in that: the view data of described axial workpiece is gathered by at least one area array CCD, after the view data of being gathered is sent to the I/O card, the input industrial computer, after industrial computer is handled described view data, export described axial workpiece deformation parameter then.
2, axial workpiece bending deformed planar array CCD measuring method according to claim 1, it is characterized in that: the image processing techniques of described industrial computer is the edge image that the multiscale analysis technology of employing wavelet transformation extracts different edge directions, adopts Mathematical Morphology Method to carry out image mosaic again.
3, a kind of axial workpiece bending deformed planar array CCD measurement mechanism is characterized in that: described device comprises image acquisition and disposal system, tested axial workpiece rotation control system; Described image acquisition and disposal system comprise area array CCD (13), backlight (15), I/O card (6), industrial computer (4); Described area array CCD (13) and backlight (15) lay respectively at tested axial workpiece (14) both sides, and area array CCD (13) links to each other with I/O card (6) by signal wire, and I/O card (6) joins with industrial computer (4); Tested axial workpiece rotation control system is made up of wheel box (8), stepper motor (12), scrambler (11), described wheel box (8) one ends join by top (7) and tested axial workpiece (14), the other end and stepper motor (12) join, and stepper motor (12) also links to each other with scrambler (11); Described image acquisition and disposal system and tested axial workpiece rotation control system are by on the straightener frame (10).
4, according to the described a kind of axial workpiece bending deformed planar array CCD measurement mechanism of claim 3, it is characterized in that: described area array CCD (13) joins with ball screw assembly, (5), described ball screw assembly, (5) also links to each other with stepper motor (9).
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| CNB2005100326543A CN100494884C (en) | 2005-01-04 | 2005-01-04 | Axial workpiece bending deformation planar array CCD measuring method and apparatus |
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Cited By (18)
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| WO2009087101A1 (en) * | 2008-01-11 | 2009-07-16 | Outotec Oyj | Method and apparatus for monitoring the operability of a travelling grate in a sintering machine |
| CN102052908A (en) * | 2010-10-08 | 2011-05-11 | 中国农业大学 | Automatic detection device for detecting angle of auto-flowing of seeds |
| CN102353613A (en) * | 2011-09-29 | 2012-02-15 | 哈尔滨工程大学 | Device and method for measuring liquid concentration of area array CCD (Charge Coupled Device) based on structured light |
| WO2015138445A1 (en) * | 2014-03-10 | 2015-09-17 | Cool Clubs, LLC | Methods and apparatus for measuring properties of a cantilevered member |
| CN105387817A (en) * | 2015-12-02 | 2016-03-09 | 四川凌峰航空液压机械有限公司 | Device for rapidly detecting size parameters of cylinder type excircle shape |
| CN105783844A (en) * | 2016-05-20 | 2016-07-20 | 河南理工大学 | Geometric quantity detection device of mechanical part |
| CN105866241A (en) * | 2016-04-03 | 2016-08-17 | 武汉理工大学 | Machine-vision self-analyzing flaw detection device for shaft parts and machine-vision self-analyzing flaw detection method |
| CN106091934A (en) * | 2016-08-31 | 2016-11-09 | 魏志丽 | Axial workpiece machine vision size detecting system |
| CN106862107A (en) * | 2016-12-28 | 2017-06-20 | 大连德迈仕精密科技股份有限公司 | Vision automatic loading/unloading testing equipment |
| CN107490338A (en) * | 2017-04-27 | 2017-12-19 | 安徽华脉科技发展有限公司 | A kind of Mechanical Parts Size vision detection system |
| CN108020159A (en) * | 2017-11-27 | 2018-05-11 | 武汉科技大学 | Shaft part size image collecting device based on machine vision |
| CN109631781A (en) * | 2018-12-26 | 2019-04-16 | 杭州科德磁业有限公司 | A kind of annulus product outer diameter bounce high-speed, high precision measuring device |
| CN109708573A (en) * | 2019-01-16 | 2019-05-03 | 武汉联扬科技有限公司 | A kind of axial workpiece parameter measurement system and its measurement method |
| CN110360959A (en) * | 2019-07-08 | 2019-10-22 | 东莞理工学院 | A kind of vision detection system for large-scale precision axial workpiece |
| CN111323297A (en) * | 2020-04-15 | 2020-06-23 | 西北核技术研究院 | Method for measuring three-dimensional deformation and abrasion of elastomer |
| CN112344871A (en) * | 2020-11-18 | 2021-02-09 | 中冶赛迪工程技术股份有限公司 | Deformation detection system and deformation detection method for temperature measurement sampling probe gun |
| CN114589106A (en) * | 2022-05-09 | 2022-06-07 | 常州市昌隆电机股份有限公司 | Efficient detection device for motor shaft and working method of efficient detection device |
| CN116499387A (en) * | 2023-04-21 | 2023-07-28 | 江苏普达迪泰科技有限公司 | Photographic measurement device for remote micro-deformation monitoring |
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2005
- 2005-01-04 CN CNB2005100326543A patent/CN100494884C/en not_active Expired - Fee Related
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| WO2009087101A1 (en) * | 2008-01-11 | 2009-07-16 | Outotec Oyj | Method and apparatus for monitoring the operability of a travelling grate in a sintering machine |
| CN101925679B (en) * | 2008-01-22 | 2013-03-27 | 奥图泰有限公司 | Method and apparatus for monitoring operability of travelling grate in sintering machine |
| RU2503903C2 (en) * | 2008-01-22 | 2014-01-10 | Оутотек Ойй | Operability control method and device of grate conveyor in sintering machine |
| CN102052908A (en) * | 2010-10-08 | 2011-05-11 | 中国农业大学 | Automatic detection device for detecting angle of auto-flowing of seeds |
| CN102052908B (en) * | 2010-10-08 | 2012-11-07 | 中国农业大学 | Automatic detection device for detecting angle of auto-flowing of seeds |
| CN102353613A (en) * | 2011-09-29 | 2012-02-15 | 哈尔滨工程大学 | Device and method for measuring liquid concentration of area array CCD (Charge Coupled Device) based on structured light |
| WO2015138445A1 (en) * | 2014-03-10 | 2015-09-17 | Cool Clubs, LLC | Methods and apparatus for measuring properties of a cantilevered member |
| CN105387817A (en) * | 2015-12-02 | 2016-03-09 | 四川凌峰航空液压机械有限公司 | Device for rapidly detecting size parameters of cylinder type excircle shape |
| CN105866241A (en) * | 2016-04-03 | 2016-08-17 | 武汉理工大学 | Machine-vision self-analyzing flaw detection device for shaft parts and machine-vision self-analyzing flaw detection method |
| CN105783844A (en) * | 2016-05-20 | 2016-07-20 | 河南理工大学 | Geometric quantity detection device of mechanical part |
| CN106091934A (en) * | 2016-08-31 | 2016-11-09 | 魏志丽 | Axial workpiece machine vision size detecting system |
| CN106862107A (en) * | 2016-12-28 | 2017-06-20 | 大连德迈仕精密科技股份有限公司 | Vision automatic loading/unloading testing equipment |
| CN107490338A (en) * | 2017-04-27 | 2017-12-19 | 安徽华脉科技发展有限公司 | A kind of Mechanical Parts Size vision detection system |
| CN108020159A (en) * | 2017-11-27 | 2018-05-11 | 武汉科技大学 | Shaft part size image collecting device based on machine vision |
| CN108020159B (en) * | 2017-11-27 | 2023-08-15 | 武汉科技大学 | Shaft part size image acquisition device based on machine vision |
| CN109631781A (en) * | 2018-12-26 | 2019-04-16 | 杭州科德磁业有限公司 | A kind of annulus product outer diameter bounce high-speed, high precision measuring device |
| CN109708573A (en) * | 2019-01-16 | 2019-05-03 | 武汉联扬科技有限公司 | A kind of axial workpiece parameter measurement system and its measurement method |
| CN109708573B (en) * | 2019-01-16 | 2019-10-18 | 武汉纺织大学 | A kind of axial workpiece measurement method of parameters based on axial workpiece parameter measurement system |
| CN110360959A (en) * | 2019-07-08 | 2019-10-22 | 东莞理工学院 | A kind of vision detection system for large-scale precision axial workpiece |
| CN111323297A (en) * | 2020-04-15 | 2020-06-23 | 西北核技术研究院 | Method for measuring three-dimensional deformation and abrasion of elastomer |
| CN112344871A (en) * | 2020-11-18 | 2021-02-09 | 中冶赛迪工程技术股份有限公司 | Deformation detection system and deformation detection method for temperature measurement sampling probe gun |
| CN114589106A (en) * | 2022-05-09 | 2022-06-07 | 常州市昌隆电机股份有限公司 | Efficient detection device for motor shaft and working method of efficient detection device |
| CN114589106B (en) * | 2022-05-09 | 2022-07-19 | 常州市昌隆电机股份有限公司 | Efficient detection device for motor shaft and working method of efficient detection device |
| CN116499387A (en) * | 2023-04-21 | 2023-07-28 | 江苏普达迪泰科技有限公司 | Photographic measurement device for remote micro-deformation monitoring |
| CN116499387B (en) * | 2023-04-21 | 2024-01-05 | 江苏普达迪泰科技有限公司 | Photographic measurement device for remote micro-deformation monitoring |
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Application publication date: 20050727 Assignee: Kunshan Chaitai Xincheng Precision Forging Co., Ltd. Assignor: South China University of Technology Contract record no.: 2011440000470 Denomination of invention: Axial workpiece bending deformed planar array CCD measuring method and apparatus Granted publication date: 20090603 License type: Exclusive License Record date: 20110527 |
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