CN102553985A - Variable cross-section cold-bending forming contour detection and control device and method - Google Patents
Variable cross-section cold-bending forming contour detection and control device and method Download PDFInfo
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Abstract
The invention provides a variable cross-section cold-bending forming contour detection and control device and a method thereof, wherein the method comprises the following steps: the variable cross-section cold-bending forming machine comprises a servo motor, a rack and a roller, the variable cross-section cold-bending forming contour detection and control device further comprises a servo motor control driver and an image acquisition processing control system, the image acquisition processing control system is connected with the servo motor control driver, and the servo motor control driver is connected with the servo motor to control the servo motor. The invention effectively combines the control of variable cross-section cold roll forming with machine vision, effectively solves the problem of low precision of the variable cross-section cold roll forming in the forming process, can better meet the requirement of actual production, expands the detection control field of the variable cross-section cold roll forming, effectively solves the problem that waste products are produced in the variable cross-section cold roll forming production process but continuous production is difficult to find, effectively reduces the rejection rate and saves the cost.
Description
Technical field
The present invention relates to variable cross-section cold-bending forming machine control field, be specifically related to detect and feedback control signal through the sheet material of machine vision to the variable cross-section cold roll forming, and then control variable cross-section cold-bending forming machine.
Background technology
In variable cross-section cold bending technology now, generally adopt the motion and the position of encoder and the indirect breaker roll of grating chi to detect feedback.But the rotating speed that cold-bending forming machine now adopts encoder to detect roll is approximately equal to the pace of sheet material, detects the baffle plate that roll is housed is approximately equal to roll with respect to the displacement of sheet material motion vertical direction displacement with the grating chi.Detected feedback information is given controller, and servomotor is controlled.Owing to there being reason such as slip between the gap of mechanical system and roll and the sheet material, the roll that this method detects and the relative positional accuracy of sheet material are lower.Thereby influence the precision of variable cross-section cold roll forming product.Need high-precision variable cross-section cold roll forming product now in fields such as automobile, buildings, and rely on above-mentioned detection control method can not satisfy production requirement.
Summary of the invention
To the demand, the technical problem of solution of the present invention is that a kind of variable cross-section cold roll forming profile Detection & Controling device and method is provided.
Variable cross-section cold roll forming profile Detection & Controling device and method scheme of the present invention is following.
A kind of variable cross-section cold roll forming profile Detection & Controling device; Comprise the variable cross-section cold-bending forming machine; Said variable cross-section cold-bending forming machine comprises servomotor, frame and roll; Said variable cross-section cold roll forming profile Detection & Controling device; Also comprise servomotor control driver and image acquisition and processing control system, said image acquisition and processing is controlled system and is connected with said servomotor control driver, and said servomotor control driver is connected with said servomotor said servomotor control.
Preferably, said image acquisition and processing control system comprises light emitting devices, image collecting device and information processing control device.
Preferably, said light emitting devices is a word generating laser, and said image collecting device comprises ccd image Acquisition Instrument and image pick-up card, and said information processing control device is an industrial control computer.
Preferably, said image pick-up card is installed in the PCI slot of said industrial control computer, and said image pick-up card is connected with said ccd image Acquisition Instrument.
Preferably; The sheet material that a said word generating laser is fixed on said variable cross-section cold-bending forming machine nibble out the roll rear end directly over; A said word generating laser goes out bright light belt in the sheet forming surface irradiation, and the light belt of a said word generating laser penetrates the upper surface of direction perpendicular to said sheet material.
Preferably; Said ccd image Acquisition Instrument is fixed on the said same level height of a word generating laser and with a said word generating laser and shines the position that said bright light belt on the said sheet material becomes 45; Said ccd image Acquisition Instrument is focused on said bright light belt, and the said bright light band on the said sheet material is carried out IMAQ.
Preferably, between the said variable cross-section cold-bending forming machine of each passage all the dress with a described word generating laser and described ccd image Acquisition Instrument, each described ccd image Acquisition Instrument all with said IMAQ card connection.
A kind of variable cross-section cold roll forming profile Detection & Controling method comprises the steps:
S1, the said word generating laser that the sheet material that is fixed on said variable cross-section cold-bending forming machine is nibbled out directly over the roll rear end goes out said bright light belt in said sheet forming surface irradiation;
S2; Be fixed on the said same level height of a word generating laser and with said bright light belt on the said sheet material and become the said ccd image Acquisition Instrument of the position of 45 that the said bright light band on the said sheet material is carried out IMAQ, the image real-time Transmission that said ccd image Acquisition Instrument collects is given said industrial control computer;
S3, the image of the said bright light belt that the said ccd image Acquisition Instrument of described industrial control computer analyzing and processing collects obtains the sectional profile curve lin of said sheet material;
S4, described industrial control computer extract the standard plate model that prestores and answer the cross section curve of moulding in this passage, and the sectional profile curve lin of the said sheet material that obtains with step S3 relatively, and draw irrelevance;
S5; The irrelevance that described industrial control computer draws step S4 is processed into described servomotor control driver can identified signal; And being transferred to described servomotor control driver, described servomotor control driver is controlled the variable cross-section cold-bending forming machine of following a time according to the said signal that receives.
Preferably, step S2 is specially:
Described industrial control computer is controlled described image pick-up card, and then controls described ccd image Acquisition Instrument and carry out the image once collection at regular intervals according to the pace of said sheet material.
Preferably, step S3 is specially:
The image of the said bright light belt that S31, described industrial control computer collect said ccd image Acquisition Instrument, remove make an uproar, binaryzation, refinement, process of fitting treatment, extract the light belt in the said image;
S32, described industrial control computer carries out matrix conversion to the said light belt that extracts, and obtains said sheet material sectional profile curve lin.
Beneficial effect of the present invention is following.
The present invention effectively combines the control of variable cross-section cold roll forming and machine vision; Effectively solved the low problem of variable cross-section cold roll forming precision in forming process; Can better satisfy the demand of actual production; Expanded the detection control field of variable cross-section cold roll forming,, can be used for the part in fields such as automobile, building and the making of member for production high accuracy variable cross-section cold roll forming product provides assurance.Simultaneously because the present invention is based on the technology of machine vision, effectively solved in variable cross-section cold roll forming production process and gone out waste product, but be difficult to find effectively reduced the problem that continues to produce percent defective and practiced thrift cost.
Description of drawings
Fig. 1 is the front view of variable cross-section cold roll forming profile Detection & Controling device of the present invention;
Fig. 2 is the vertical view of variable cross-section cold roll forming profile Detection & Controling device of the present invention;
Fig. 3 is the partial 3 d sketch map of variable cross-section cold roll forming profile Detection & Controling device of the present invention;
Fig. 4 is the step of variable cross-section cold roll forming profile Detection & Controling method of the present invention;
Among the figure: 1. variable cross-section cold-bending forming machine; 2. a word generating laser; 3.CCD image capture instrument; 4. servomotor; 5. image pick-up card; 6. industrial control computer; 7. servomotor is controlled driver; 8. ball-screw; 9. sheet material; 10. molding roller.
The specific embodiment
Technical scheme of the present invention may be summarized to be: a fixing word generating laser 2 directly over after sheet material is nibbled out roll; A described word generating laser 2 shines downwards; On sheet material 9, form bright light belt, with the fixing described ccd image Acquisition Instrument 3 of a described word generating laser 2 horizontal levels, and become 45 with bright light belt on the said sheet material 9; Bright light band on the said sheet material 9 carries out IMAQ; Regularly carry out IMAQ through the described ccd image Acquisition Instrument 3 of described industrial control computer 6 controls, the image of gathering is transferred in the described industrial control computer 6 through said image pick-up card 5, programme through visual c++; Said image is carried out post-processed extract said bright light belt; Be profiled sheeting material 9 sectional profile curve lin of this moment, through said industrial control computer 6 gained sectional profile curve lin and prior theory sectional profile curve lin compared and draw irrelevance, be transferred to said servomotor and control driver 7; Servomotor 4 is controlled, and then the movement locus of control roll.
Below in conjunction with accompanying drawing a kind of variable cross-section cold roll forming profile Detection & Controling device and method of the present invention is further specified.
Variable cross-section cold roll forming profile Detection & Controling device of the present invention; Comprise variable cross-section cold-bending forming machine 1; Said variable cross-section cold-bending forming machine 1 comprises servomotor 4, frame and roll; Said variable cross-section cold roll forming profile Detection & Controling device; Also comprise servomotor control driver 7 and image acquisition and processing control system, said image acquisition and processing is controlled system and is connected with said servomotor control driver 7, and said servomotor control driver 7 is connected with servomotor 4 servomotor 4 controls.Said image acquisition and processing control system comprises light emitting devices, image collecting device and information processing control device.Said light emitting devices is a word generating laser 2, and said image collecting device comprises ccd image Acquisition Instrument 3 and image pick-up card 5, and said information processing control device is an industrial control computer 6.Said image pick-up card 5 is installed in the PCI slot of said industrial control computer 6, and said image pick-up card 5 is connected with said ccd image Acquisition Instrument 3.The sheet material that a said word generating laser 2 is fixed on said variable cross-section cold-bending forming machine 1 nibble out the roll rear end directly over, a said word generating laser 2 is to be used at sheet forming 9 surface irradiations go out to become clear a word generating laser 2 of light belt.Said ccd image Acquisition Instrument 3 is fixed on a said word generating laser 2 same level heights and with a said word generating laser 2 and shines the position that said bright light belt on the said sheet material 9 becomes 45; Said ccd image Acquisition Instrument 3 is focused on said bright light belt, and the said bright light band on the said sheet material 9 is carried out IMAQ.All dress is with a described word generating laser 2 and described ccd image Acquisition Instrument 3 between the said variable cross-section cold-bending forming machine 1 of each passage, and each described ccd image Acquisition Instrument 3 all is connected with said image pick-up card 5.
Variable cross-section cold roll forming profile Detection & Controling method of the present invention comprises the steps:
S1, the said word generating laser 2 that the sheet material that is fixed on said variable cross-section cold-bending forming machine 1 is nibbled out directly over the roll rear end goes out said bright light belt in said sheet forming 9 surface irradiations;
S2; Be fixed on a said word generating laser 2 same level heights and with said bright light belt on the said sheet material 9 and become the said bright light band on 3 pairs of said sheet materials 9 of said ccd image Acquisition Instrument of position of 45 to carry out IMAQ, the image real-time Transmission that said ccd image Acquisition Instrument 3 collects is given said industrial control computer 6;
S3, the image of the said bright light belt that the said ccd image Acquisition Instrument 3 of described industrial control computer 6 analyzing and processing collects obtains the sectional profile curve lin of said sheet material 9;
S4, described industrial control computer 6 extract the standard plate model that prestores and answer the cross section curve of moulding in this passage, and the sectional profile curve lin of the said sheet material 9 that obtains with step S3 relatively, and draw irrelevance;
S5; The irrelevance that described industrial control computer 6 draws step S4 is processed into described servomotor control driver 7 can identified signal; And being transferred to described servomotor control driver 7, the said signal that described servomotor control driver 7 bases receive is controlled the variable cross-section cold-bending forming machine 1 of following a time.
Step S2 is specially: the described image pick-up card 5 of described industrial control computer 6 controls, and then control described ccd image Acquisition Instrument 3 and carry out the image once collection at regular intervals according to the pace of said sheet material 9.
Step S3 is specially:
S31, the image of the said bright light belt that 6 pairs of said ccd image Acquisition Instruments 3 of described industrial control computer collect, remove make an uproar, binaryzation, refinement, process of fitting treatment, extract the light belt in the said image;
S32, the said light belt that 6 pairs of described industrial control computers extract carries out matrix conversion, obtains said sheet material 9 sectional profile curve lins.
Can know the mounting means of variable cross-section cold roll forming profile required make-up machine of Detection & Controling device and method and hardware with reference to the vertical view shown in the front view shown in the accompanying drawing 1, the accompanying drawing 2 and the partial 3 d sketch map shown in the accompanying drawing 3.According to variable cross-section cold roll forming profile Detection & Controling device and method of the present invention; A fixing word generating laser 2 directly over after sheet material 9 is nibbled out molding roller 10; A said word generating laser 2 is launched a word light belt and is radiated on the said sheet material 9, on said sheet material 9, forms bright light belt.Becoming the fixed-site ccd image Acquisition Instrument 3 of 45, the said bright light band on the said sheet material 9 is carried out IMAQ with a said word generating laser 2 same level heights and with bright light belt on the said sheet material 9.Said ccd image Acquisition Instrument 3 is transferred to industrial control computer 6 with the image that collects through image pick-up card 5; Processing such as the image that said industrial control computer 6 collects said ccd image Acquisition Instrument 3 through the visual c++ programming removes and makes an uproar, binaryzation, refinement, match; Extract the curve that the bright light belt in the said image that collects simulates; Because said ccd image Acquisition Instrument 3 becomes 45 with said bright light belt on the sheet material 9; Image distorts described in the gatherer process; So the said bright light belt curve that said industrial control computer 6 is extracted carries out matrix conversion, the real bright light belt curve of reduction, the sectional profile curve lin of promptly said sheet material 9 after this passage of moulding.The standard sheet forming model of before said sheet material 9 processing, having stored in the said industrial control computer 6; Pace according to the said sheet material 9 of reality; Can extract said ccd image Acquisition Instrument 3 standard plate sectional profile curve lin when taking pictures; The actual cross-section contour curve that obtains is compared with the standard section contour curve, can draw the irrelevance between the curve, and then obtain the error of roll motion.Said industrial control computer 6 is transferred to said servomotor control driver 7 with the roll kinematic error that obtains, and then a time servomotor 4 under the control.Said servomotor 4 makes the molding roller 10 on the variable cross-section cold-bending forming machine 1 move by needed movement locus through ball screw 8.Thereby improve the precision of variable cross-section cold roll forming product.
The above-mentioned single pass explanation that is illustrated as said variable cross-section cold roll forming profile Detection & Controling device and method, each passage variable cross-section cold roll forming all the detection control scheme with this passage are identical.
Through above explanation, can see that said variable cross-section cold roll forming profile Detection & Controling device and method can process high-precision variable cross-section cold roll forming product according to designer's requirement.Illustrate practical implementation method of the present invention below.
Shown in accompanying drawing 2 vertical views, when variable cross-section cold-bending forming machine 1 powered on, a word generating laser 2 energisings were launched a bright light belt under vertical.When sheet material 9 got into the first passage variable cross-section cold-bending forming machine 1, industrial control computer 6 picked up counting, and at set intervals the bright light band on the sheet material 9 was carried out the image once collection through image pick-up card 5 control ccd image Acquisition Instruments 3.When ccd image Acquisition Instrument 3 was gathered image, industrial control computer 6 calculated the theoretical sectional profile curve lin of this point according to the standard irregular section of storing in the internal memory.Ccd image Acquisition Instrument 3 is transferred to industrial control computer 6 with the image information that collects through image pick-up card 5; Processing such as industrial control computer 6 removes image through Visual C++ written program and makes an uproar, binaryzation, refinement, match; Extract the curve of bright light belt in the image that collects; Because ccd image Acquisition Instrument 3 becomes 45 with bright light belt on the sheet material 9, image distorts in the gatherer process, so the bright light belt curve that industrial control computer 6 is extracted carries out matrix conversion; Reduction real bright light belt curve, the i.e. sectional profile curve lin of sheet material 9 after this passage of moulding.The actual cross-section contour curve that obtains is compared with the standard section contour curve, draw the irrelevance between the curve, and then obtain the error of roll motion.Industrial control computer 6 is treated to servomotor control driver 7 with the roll kinematic error that obtains can identified signal and be transferred to servomotor control driver 7, and then control a time servomotor 4 down.Servomotor 4 makes the molding roller 10 on the variable cross-section cold-bending forming machine 1 move by needed movement locus through ball screw 8.
The present invention has realized real closed-loop control, and has improved the precision of variable cross-section cold roll forming product, reduces percent defective.
The present invention effectively combines the control of variable cross-section cold roll forming and machine vision; Effectively solved the low problem of variable cross-section cold roll forming precision in forming process; Can better satisfy the demand of actual production; Expanded the detection control field of variable cross-section cold roll forming,, can be used for the part in fields such as automobile, building and the making of member for production high accuracy variable cross-section cold roll forming product provides assurance.Simultaneously because the present invention is based on the technology of machine vision, effectively solved in variable cross-section cold roll forming production process and gone out waste product, but be difficult to find effectively reduced the problem that continues to produce percent defective and practiced thrift cost.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also should be looked protection scope of the present invention.
Claims (10)
1. variable cross-section cold roll forming profile Detection & Controling device; Comprise the variable cross-section cold-bending forming machine; Said variable cross-section cold-bending forming machine comprises servomotor, frame and roll, it is characterized in that, also comprises servomotor control driver and image acquisition and processing control system; Said image acquisition and processing is controlled system and is connected with said servomotor control driver, and said servomotor control driver is connected with said servomotor said servomotor control.
2. variable cross-section cold roll forming profile Detection & Controling device according to claim 1 is characterized in that said image acquisition and processing control system comprises light emitting devices, image collecting device and information processing control device.
3. variable cross-section cold roll forming profile Detection & Controling device according to claim 2; It is characterized in that said light emitting devices is a word generating laser; Said image collecting device comprises ccd image Acquisition Instrument and image pick-up card, and said information processing control device is an industrial control computer.
4. variable cross-section cold roll forming profile Detection & Controling device according to claim 3 is characterized in that said image pick-up card is installed in the PCI slot of said industrial control computer, and said image pick-up card is connected with said ccd image Acquisition Instrument.
5. variable cross-section cold roll forming profile Detection & Controling device according to claim 3; It is characterized in that sheet material that a said word generating laser is fixed on said variable cross-section cold-bending forming machine nibble out the roll rear end directly over; A said word generating laser goes out bright light belt in the sheet forming surface irradiation, and the light belt of a said word generating laser penetrates the upper surface of direction perpendicular to said sheet material.
6. variable cross-section cold roll forming profile Detection & Controling device according to claim 3; It is characterized in that said ccd image Acquisition Instrument is fixed on the said same level height of a word generating laser and with a said word generating laser shines the position that said bright light belt on the said sheet material becomes 45; Said ccd image Acquisition Instrument is focused on said bright light belt, and the said bright light band on the said sheet material is carried out IMAQ.
7. variable cross-section cold roll forming profile Detection & Controling device according to claim 3; It is characterized in that; Between the said variable cross-section cold-bending forming machine of each passage all the dress with a described word generating laser and described ccd image Acquisition Instrument, each described ccd image Acquisition Instrument all with said IMAQ card connection.
8. a variable cross-section cold roll forming profile Detection & Controling method is characterized in that comprising the steps:
S1, the said word generating laser that the sheet material that is fixed on said variable cross-section cold-bending forming machine is nibbled out directly over the roll rear end goes out said bright light belt in said sheet forming surface irradiation;
S2; Be fixed on the said same level height of a word generating laser and with said bright light belt on the said sheet material and become the said ccd image Acquisition Instrument of the position of 45 that the said bright light band on the said sheet material is carried out IMAQ, the image real-time Transmission that said ccd image Acquisition Instrument collects is given said industrial control computer;
S3, the image of the said bright light belt that the said ccd image Acquisition Instrument of described industrial control computer analyzing and processing collects obtains the sectional profile curve lin of said sheet material;
S4, described industrial control computer extract the standard plate model that prestores and answer the cross section curve of moulding in this passage, and the sectional profile curve lin of the said sheet material that obtains with step S3 relatively, and draw irrelevance;
S5; The irrelevance that described industrial control computer draws step S4 is processed into described servomotor control driver can identified signal; And being transferred to described servomotor control driver, described servomotor control driver is controlled the variable cross-section cold-bending forming machine of following a time according to the said signal that receives.
9. variable cross-section cold roll forming profile Detection & Controling method according to claim 8 is characterized in that step S2 is specially:
Described industrial control computer is controlled described image pick-up card, and then controls described ccd image Acquisition Instrument and carry out the image once collection at regular intervals according to the pace of said sheet material.
10. variable cross-section cold roll forming profile Detection & Controling method according to claim 8 is characterized in that step S3 is specially:
The image of the said bright light belt that S31, described industrial control computer collect said ccd image Acquisition Instrument, remove make an uproar, binaryzation, refinement, process of fitting treatment, extract the light belt in the said image;
S32, described industrial control computer carries out matrix conversion to the said light belt that extracts, and obtains said sheet material sectional profile curve lin.
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| CN201210005813.0A CN102553985B (en) | 2012-01-10 | 2012-01-10 | Variable cross-section cold-bending forming contour detection and control device and method |
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| CN201210005813.0A CN102553985B (en) | 2012-01-10 | 2012-01-10 | Variable cross-section cold-bending forming contour detection and control device and method |
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| WO2022007124A1 (en) * | 2020-07-07 | 2022-01-13 | 蒋梦兰 | Portable waste recycling pricing system and corresponding terminal |
| CN112304243A (en) * | 2020-11-12 | 2021-02-02 | 北京机电研究所有限公司 | Contour detection device and detection method for plate stamping part |
| CN112304243B (en) * | 2020-11-12 | 2022-11-15 | 北京机电研究所有限公司 | Contour detection device and detection method for plate stamping part |
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