CN204007540U - Roll Testing Cylindricity Error device based on ccd image - Google Patents
Roll Testing Cylindricity Error device based on ccd image Download PDFInfo
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- CN204007540U CN204007540U CN201420339190.5U CN201420339190U CN204007540U CN 204007540 U CN204007540 U CN 204007540U CN 201420339190 U CN201420339190 U CN 201420339190U CN 204007540 U CN204007540 U CN 204007540U
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Abstract
The utility model discloses a kind of roll Testing Cylindricity Error device based on ccd image, by the two tested roll of horizontal top support (24) both ends of the surface of connection bracket (16), utilize the light-source system of tested roll (24) one sides to send two parallel beams to tested roll (24) side, and go up imaging at the first ccd array (6) and second ccd array (7) of tested roll (24) opposite side, two arrays are arranged in the same xsect of tested roll (24), and the upper lower edge of aiming at respectively tested roll (24), by making tested roll (24) along its axial-rotation, and two ccd array are along the axial translation of tested roll (24), thereby collect the marginal position of each axle side of tested roll (24) and the data of diameter, and carry out deviation from cylindrical form calculating, under non-cpntact measurement, improve accuracy of detection.
Description
Technical field
The utility model relates to a kind of error detecting apparatus based on charge coupled device ccd (Charge Coupled Device) image, is particularly useful for accurately detecting roll deviation from cylindrical form.
Background technology
Roll is with a kind of important metallurgical instrument in the steel board operation of rolling.The pressure that milling train produces while utilizing a pair of or one group of roll on it to roll rolls stone roller steel, and the accuracy of form and position of visible roll directly affects the crudy of steel rolling product, therefore must given suitable error in the operation of rolling.Cylindricity tolerance is that practical columnar is faced the maximum variation that the desirable face of cylinder allows, the tolerance that has comprised axle section and Liang Ge aspect, transverse section, the mobility scale allowing in order to limit mismachining tolerance, and whether the deviation from cylindrical form of roll is within the error of controlling, to be judged by measuring.
Yet mostly conventional measuring method, as axle center basic taper method, coordinate method, two-point method and three point method etc., is contact measurement, is to read scale by human eye, the numerical value of surveying varies with each individual, thereby causes repeatedly the repeatability of measurement result there are differences.In recent years, adopt roundness measuring equipment, three coordinate measuring machine or the shape measuring instrument etc. that are equipped with Cylindricity Error Measurement Software to detect deviation from cylindrical form, but instrument is expensive, measure cost higher, and measurer itself is because the reason of temperature and mechanical aspects is very easily out of shape, easily bring measuring error, so waste time and energy while causing measuring, measurement result has very large uncertainty, especially roundness measuring equipment operating environment require strict, can not be on-the-spot for workshop, three coordinate measuring machine be measuring process very consuming time, be unfavorable for on-the-spot a large amount of measurement.
Generally speaking, the existing composite measurement technology for roll Testing Cylindricity Error is also undesirable.Therefore,, for further improving the crudy of steel rolling product, the precision that how to improve rolling mill roll Testing Cylindricity Error has become a urgent research topic.
Summary of the invention
For above-mentioned existing technical matters, the utility model provides a kind of roll Testing Cylindricity Error device based on ccd image, utilize ccd image detection and servo control technique to realize the non-contact measurement of roll deviation from cylindrical form, can access the cross section circularity of all resolution precision of roll, to improve speed and the precision of detection.
So-called CCD(Charge Coupled Device) be Charge Coupled Device (CCD) imageing sensor.It uses a kind of semiconductor material of ISO to make, and many sensitization units, consists of, and conventionally take mega pixel as unit, light signal can be converted to charge signal, by outside analog to digital converter, converts data image signal to.When CCD surface is subject to light irradiation, each sensitization unit can be reflected in electric charge on assembly, and the signal that all sensitization units produce is added together, and has just formed a complete picture, effect, and can be in conjunction with servo control technique by picture disply out just as film.
The utility model provides a kind of roll Testing Cylindricity Error device based on ccd image, comprises and is connected with two top supports, the described tested roll both ends of the surface of two top supports center, and can drive tested roll along self axis rotation; Comprise and be positioned at the light-source system of tested roll one side, the first ccd array that is positioned at opposite side and the second ccd array, and first and second ccd array is in the vertical plane of the same axle of tested roll side, receive respectively the imaging of lower edge on tested roll, and can move along being parallel to tested roll axis direction; Also comprise the image pick-up card being electrically connected to first and second ccd array respectively, the computing machine being electrically connected to successively with image pick-up card and LCD display.
Further, CCD is mainly divided into line array CCD and area array CCD, line array CCD has the advantages such as pixel number is many, speed is fast, price is low, adopt line array CCD routing motion scanning mechanism can realize the scanning of two dimensional image, and the precision of the image that line array CCD obtains on direction of scanning can be higher than Array CCD, line array CCD adds scanning motion and obtains the scheme of image and still use at present extensively, especially requiring visual field large, in the high situation of image resolution ratio, even can not substitute with area array CCD, so the first ccd array and the second ccd array are selected line array CCD.
Further, owing to requiring measuring accuracy high, line array CCD is kept in motion again, therefore the illumination of object has been proposed to high requirement, described light-source system sends two parallel beams that are arranged above and below, be irradiated to respectively the upper lower edge of tested roll side, so can reduce ambient light according to the impact on measurement result.
Further, described light-source system comprises the LASER Light Source emitting beam to tested roll direction, the laser beam expanding lens that expands this light, this is expanded to light respectively to the prism of both sides refraction, this two bundles refracted ray is reflexed to the first catoptron and second catoptron of lower edge on tested roll mandrel side.Known, the light that LASER Light Source is sent forms parallel beam through laser beam expanding lens, and parallel beam reflexes to respectively the first catoptron, above the second catoptron, then through the first catoptron, the second catoptron, is reflected into two bundle parallel beams through prism two sides.
Further, described image pick-up card is mainly comprised of A/D converter, programmable logic device (PLD) FPGA, ARM single-chip microcomputer and synchronous DRAM SDARAM.
Further, described two are toply driven and are rotated around tested roll axis by rotating stepper motor, and the rotation of rotating stepper motor is by stepper motor driver and computer control.
Further, first and second ccd array is realized movement along the guide rail translation that is parallel to tested roll axis direction by the worktable being fixedly connected with under first and second gear driven matching, and the second gear drives the rotation of rotation, mobile stepper motor by stepper motor driver and computer control by mobile stepper motor.
Further, described computing machine is also connected with printer, can go out the information in LCD display by real time print.
The vision technique that this pick-up unit adopts CCD to combine with computing machine not only can be realized the non-contact detecting of roll deviation from cylindrical form project, can also collect in a short period of time a large amount of marginal points with image pick-up card, whole testing process is completed by computer control, and robotization and intelligent degree are higher.The shortcomings such as the subjectivity intrinsic with respect to manual detection, fatiguability, speed is slow, cost is high, intensity is large, this device detected representation the impayable advantages such as its consistance, accuracy, repeatability, possess anti-electromagnetic interference (EMI), high sensitivity, use flexibly, detection efficiency high, can meet roll form and position error measurement precision and environmental requirement.Overcome existing checkout equipment expensive simultaneously, higher to environmental requirement, and the single defect of the measure the item having.To improving China's band steel board production technology level and developing China's scientific instrument industry, there is facilitation.
Accompanying drawing explanation
Fig. 1 is structure of the present utility model and raw material schematic diagram;
Fig. 2 is the partial structurtes schematic diagram at the utility model support place;
Fig. 3 is the electric theory diagram of the utility model hardware;
In figure: 1, LASER Light Source, 2, laser beam expanding lens, 3, prism, 4, the first catoptron, 5, the second catoptron, 6, the first ccd array, 7, the second ccd array, 8, image pick-up card, 9, LCD display, 10, removable drive, 11, mobile stepper motor, 12, the first gear, 13, the second gear, 14, worktable, 15, computing machine, 16, support, 17, rotating stepper motor, 18, rotating driver, 19, A/D converter, 20, programmable logic device (PLD) FPGA, 21, ARM single-chip microcomputer, 22, synchronous DRAM SDARAM, 23, printer, 24, tested roll.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, the both ends of the surface center of roll 24 is by being installed on two horizontal top supports on support 16, and above-mentioned top can rotation around tested roll 24 axis, to be convenient for measuring the different-diameter on the same xsect of tested roll 24.As shown in Figure 2, two are toply driven and are rotated around tested roll 24 axis by rotating stepper motor 17, and the rotation of stepper motor 17 is controlled by stepper motor driver 18 and computing machine 15.
Tested roll 24 sides are provided with light-source system, and during enforcement, light-source system can send two parallel beams that are arranged above and below, and are irradiated to respectively the upper lower edge of tested roll 24 axle sides.While further implementing, light-source system comprises LASER Light Source 1, laser beam expanding lens 2 and the prism 3 that relatively tested roll 24 draws near and places, and the first catoptron 4 and the second catoptron 5 that are positioned over prism both sides Shang Xia 3.
Tested roll 24 opposite sides are provided with the first ccd array 6 and the second ccd array 7, during enforcement, select line array CCD, because of tested roll 2 diameters larger, for guaranteeing array image-forming edge clear, so two ccd array are placed in the vertical plane of same axle side of tested roll 24, and upper lower edge of aiming at respectively tested roll 24.For making two arrays can receive the imaging of tested roll 24 each axle sides, both are connected on the worktable 14 that is positioned at tested roll 24 belows, as shown in Figure 1, worktable 14 bottoms are provided with the first gear 12 and the second gear 13 cooperatively interacting, and the second gear 13 connects the rotation of mobile stepper motor 11, stepper motor 11 and is controlled by stepper motor driver 10 and computing machine 15, by mobile stepper motor 11, drive worktable 14 to move along the guide rail of Duplicate Samples roll axis 24 axis directions, thereby measure the diameter at roll varying cross-section place.And transmit image-forming information by the image pick-up card 8 being electrically connected to first and second ccd array 6,7 respectively, then be transferred to computing machine 15 and LCD display 9 processes and displays that are electrically connected to successively with image pick-up card 8.
In above-described embodiment, as shown in Figure 3, described image pick-up card 8 is mainly comprised of A/D converter 19, programmable logic device (PLD) FPGA20, synchronous DRAM SDARAM22 and ARM single-chip microcomputer 21.The image data acquiring circuit of whole system is used programmable logic device (PLD) FPGA 20 and ARM single-chip microcomputer 21 to match and jointly completes, programmable logic device (PLD) FPGA20, with its interface section that processing power of time control ability and multithreading is particularly suitable for doing data transmission and collection accurately, is also the bridge of connected system front-end and back-end; ARM single-chip microcomputer 21 is done the data acquisition interface core processing unit of device with its powerful control ability, as device overall control and FPGA20, coordinate the high speed acquisition that jointly realizes data.
This pick-up unit carries out the testing of roll deviation from cylindrical form based on the first ccd array 6, the second ccd array 7 imagings.First, the light that LASER Light Source 1 is sent forms parallel beam through laser beam expanding lens 2, parallel beam reflexes to respectively the first catoptron 4, above the second catoptron 5, then through the first catoptron 4, the second catoptron 5, is reflected into two bundle parallel beams through 3 liang of right angle faces of prism.Two bundle parallel beams are irradiated on tested roll 24, then imaging on first and second ccd array 6,7.
Secondly, tested roll 24 1 xsects are divided into n measurement point, by the tested roll 24 of the top driving of support 16, along self axial-rotation, tested roll 24 often turns over θ=360 °/n angle, just can gather by first and second ccd array 6,7 the side orthographic view of a roll.
Then, image pick-up card 8 converts electric signal to the light signal on first and second ccd array 6,7, namely original image is converted into digital picture, then by the pci bus being connected with computing machine 15, the image in image pick-up card 8 internal memories is sent to computing machine 15 internal memories, the software systems of recycling exploitation are carried out image processing.Because tested roll 24 is lighttight, first and second ccd array 6,7 surfaces that sheltered from by roll 24 can form shade, and the photosensitive unit under shade can be exported dark signal; Have light beam irradiates to the photosensitive unit on first and second ccd array 6,7 surfaces partly produce charge carrier, produce output voltage, as shown in Figure 3, carry out can producing digital signal after A/D conversion, FPGA20 gathers this digital signal, then is transferred to successively ARM single-chip microcomputer 21 and computing machine 15.
Moreover, for the data that collect 15 li, computing machine, adopt the conventional data processing method of those skilled in the art, wherein Binarization methods and error analysis and calibration algorithm part can be completed by mathematical analysis software MATLAB, then by the binaryzation data after differentiating, calculate the position of tested roll 24 imaging axis lateral edge parts, and then calculate the size of tested roll 24 imaging axis sides.
Finally, mobile stepper motor 11 drives the worktable 15 that is connected with first and second ccd array 6,7 to move along tested roll 24 axis directions, thereby measures the diameter at tested roll 24 axial different cross section places, and then measures the deviation from cylindrical form of roll 24.
In the various embodiments described above, described computing machine 15 is also connected with printer 23, printablely goes out various imagings and data results.
Claims (8)
1. the roll Testing Cylindricity Error device based on ccd image, it is characterized in that, comprise and be connected with two top supports (16), the described tested roll of two top supports (24) both ends of the surface center, and can drive tested roll (24) along self axis rotation; Comprise and be positioned at the light-source system of tested roll (24) one sides, the first ccd array (6) that is positioned at opposite side and the second ccd array (7), and first and second ccd array (6,7) is in the vertical plane of the same axle of tested roll (24) side, receive respectively the imaging of the upper lower edge of tested roll (24), and can move along being parallel to tested roll (24) axis direction; Also comprise the image pick-up card, the computing machine being electrically connected to successively with image pick-up card (15) and the LCD display (9) that are electrically connected to first and second ccd array (6,7) respectively.
2. a kind of roll Testing Cylindricity Error device based on ccd image according to claim 1, is characterized in that, first and second described ccd array (6,7) is selected line array CCD.
3. a kind of roll Testing Cylindricity Error device based on ccd image according to claim 1 and 2, is characterized in that, described light-source system sends the parallel beam of two arrangements, is irradiated to respectively the upper lower edge of tested roll (24) axle side.
4. a kind of roll Testing Cylindricity Error device based on ccd image according to claim 3, it is characterized in that, described light-source system comprises the LASER Light Source (1) emitting beam to tested roll (24) side, the laser beam expanding lens (2) that expands this light, this is expanded to light respectively to the prism (3) of both sides refraction, this two bundles refracted ray is reflexed to the first catoptron (4) and second catoptron (5) of lower edge on tested roll (24) axle side.
5. a kind of roll Testing Cylindricity Error device based on ccd image according to claim 1 and 2, it is characterized in that, described image pick-up card is mainly by A/D converter (19), programmable logic device (PLD) FPGA(20), ARM single-chip microcomputer (21) and synchronous DRAM SDARAM(22) be electrically connected to and form.
6. a kind of roll Testing Cylindricity Error device based on ccd image according to claim 1 and 2, it is characterized in that, described two are toply driven around the rotation of tested roll (24) axis by rotating stepper motor (17), and the rotation of rotating stepper motor (17) is by stepper motor driver (18) and computing machine (15) control.
7. a kind of roll Testing Cylindricity Error device based on ccd image according to claim 1 and 2, it is characterized in that, described first, two ccd array (6, 7) be fixedly connected on worktable (14), worktable (14) can be along the guide rail translation that is parallel to tested roll (20) axis direction under the first gear (12) cooperatively interacting and the second gear (13) drive, and the second gear (13) drives rotation by mobile stepper motor (11), the rotation of mobile stepper motor (11) is controlled by stepper motor driver (10) and computing machine (15).
8. a kind of roll Testing Cylindricity Error device based on ccd image according to claim 1 and 2, is characterized in that, described computing machine (15) is also connected with printer (23).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420339190.5U CN204007540U (en) | 2014-06-24 | 2014-06-24 | Roll Testing Cylindricity Error device based on ccd image |
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| CN201420339190.5U CN204007540U (en) | 2014-06-24 | 2014-06-24 | Roll Testing Cylindricity Error device based on ccd image |
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| CN204007540U true CN204007540U (en) | 2014-12-10 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104764406A (en) * | 2015-04-10 | 2015-07-08 | 西北工业大学 | Small workpiece dimension detector |
| CN105716528A (en) * | 2016-05-09 | 2016-06-29 | 西安捷创测控技术有限公司 | Oil pipe thread size parameter detection method and device |
| CN108917629A (en) * | 2018-04-24 | 2018-11-30 | 雅视特科技（杭州）有限公司 | Spheroidal graphite cast-iron nodularization degree nondestructive measurement device and its measurement method |
| CN109797534A (en) * | 2019-04-08 | 2019-05-24 | 上海锴铨智能科技有限公司 | A kind of intelligence perching equipment |
| CN110095075A (en) * | 2018-01-30 | 2019-08-06 | 宝山钢铁股份有限公司 | Column diameter measurement device and method |
| CN115164737A (en) * | 2022-07-15 | 2022-10-11 | 浙江中烟工业有限责任公司 | Cigarette size measuring device and method based on linear array CCD |
| CN116734769A (en) * | 2023-08-14 | 2023-09-12 | 宁德时代新能源科技股份有限公司 | Cylindricity detection device and detection method for cylindrical battery cell |
| CN117470136A (en) * | 2023-10-31 | 2024-01-30 | 苏州奥特兰恩自动化设备有限公司 | Concentricity measuring equipment |
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2014
- 2014-06-24 CN CN201420339190.5U patent/CN204007540U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104764406A (en) * | 2015-04-10 | 2015-07-08 | 西北工业大学 | Small workpiece dimension detector |
| CN105716528A (en) * | 2016-05-09 | 2016-06-29 | 西安捷创测控技术有限公司 | Oil pipe thread size parameter detection method and device |
| CN110095075A (en) * | 2018-01-30 | 2019-08-06 | 宝山钢铁股份有限公司 | Column diameter measurement device and method |
| CN108917629A (en) * | 2018-04-24 | 2018-11-30 | 雅视特科技（杭州）有限公司 | Spheroidal graphite cast-iron nodularization degree nondestructive measurement device and its measurement method |
| CN109797534A (en) * | 2019-04-08 | 2019-05-24 | 上海锴铨智能科技有限公司 | A kind of intelligence perching equipment |
| CN115164737A (en) * | 2022-07-15 | 2022-10-11 | 浙江中烟工业有限责任公司 | Cigarette size measuring device and method based on linear array CCD |
| CN116734769A (en) * | 2023-08-14 | 2023-09-12 | 宁德时代新能源科技股份有限公司 | Cylindricity detection device and detection method for cylindrical battery cell |
| CN116734769B (en) * | 2023-08-14 | 2023-12-01 | 宁德时代新能源科技股份有限公司 | Cylindricity detection device and detection method for cylindrical battery cell |
| CN117470136A (en) * | 2023-10-31 | 2024-01-30 | 苏州奥特兰恩自动化设备有限公司 | Concentricity measuring equipment |
| CN117470136B (en) * | 2023-10-31 | 2024-04-09 | 苏州奥特兰恩自动化设备有限公司 | Concentricity measuring equipment |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20150624 |
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