CN101979174B - Flexible roll bending forming device based on machine vision and calibration method - Google Patents
Flexible roll bending forming device based on machine vision and calibration method Download PDFInfo
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- CN101979174B CN101979174B CN2010102736219A CN201010273621A CN101979174B CN 101979174 B CN101979174 B CN 101979174B CN 2010102736219 A CN2010102736219 A CN 2010102736219A CN 201010273621 A CN201010273621 A CN 201010273621A CN 101979174 B CN101979174 B CN 101979174B
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- 238000000034 method Methods 0.000 title abstract description 15
- 238000013000 roll bending Methods 0.000 title abstract description 8
- 238000001514 detection method Methods 0.000 claims abstract description 24
- 230000033001 locomotion Effects 0.000 claims abstract description 5
- 238000009434 installation Methods 0.000 claims description 31
- 238000007493 shaping process Methods 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 6
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 230000026676 system process Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 16
- 239000002184 metal Substances 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000007689 inspection Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
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Abstract
The invention discloses a flexible roll bending forming device and a calibration method based on machine vision, belongs to the field of roll bending forming technology and equipment, and is used for controlling the resilience of a roll bending forming product. The flexible roll bending forming device comprises a forming machine, a machine base, a guide rail fixed on the machine base, a calibrating device, a machine vision detecting device and a computer control system. The calibrating device is arranged on the guide rail, the machine vision detecting device is arranged in front of and behind the calibrating device, and the computer control system processes signals detected by the machine vision detecting device and controls the movement of the calibrating device. By the aid of the device, in the roll bending forming process, after the plate passes through the forming machine and is detected and controlled by the machine vision detection device and the computer control system, the computer control system controls the calibration device to perform calibration twice, and errors caused by springback can be effectively reduced. The forming device can realize on-line monitoring, improves the precision of processed products, and is convenient to operate, safe and reliable.
Description
Technical field
The present invention relates to a kind of flexible roll forming device and calibration steps, belong to roll forming technology and apparatus field, be used for the resilience of control roll o ing product based on machine vision.
Background technology
Roll forming is that a series of rolls of arranging through tandem are the processing method with certain section geometric product with sheet metal progressive forming.Roll forming is a kind of material-saving, energy-conservation, metal forming new technology, new technology efficiently, has wide application, has become to produce one of the most frequently used sheetmetal processing method in enormous quantities.
Because the material of roll forming product is developed to the high strength steel direction by common straightcarbon steel at present; The application of various high-strength steel sheets in the roll bending formation product more and more widely; And the springback capacity of high strength steel behind roll forming is bigger than conventional steel plates; These springback capacities will certainly reduce machining accuracy, are very necessary so the resilience in the roll bending formation process is controlled.
In the existing technology, application number is 200810243210.8 Chinese invention patent, discloses a kind of combined roller structure for cold bending forming machine; Its top roll and last axle are fixing, and lower roll and lower shaft are fixed, and the asessory shaft bearing is connected through first connecting plate with the asessory shaft bearing; Characteristic is: the asessory shaft bearing is connected with last axle through bearing; Second connecting plate and asessory shaft bearing are fixed, and little axle is fixed with second connecting plate, and help roll is connected with little axle through bearing.Though it is empty curved that its structure has been avoided in forming process, improved surface quality of products, owing to there is not online resilience control device; Can not in time adjust the roll angle according to the sheet material cross sectional shape and carry out resilience control; Need carry out offline inspection, troublesome poeration is wasted man-hour.
Application number is the Chinese invention patent of 200810064528.X; A kind of metal processing and molding method that reduces plastic resilience is disclosed; This method is that earlier reverse preform loads; Shape and reduce plate material to rebound: inductile high duty metal plate is loaded along carrying out preform in the other direction earlier before shaping, and then plate is carried out forward shape, the Bao Xingge effect through metal reduces resilience significantly or eliminates like this.This method has following at least defective: carry out twice loading, and the forming process metal blank all will carry out turn-over at every turn, causes the time of shaping long, efficient is low.Because the resilience of different plates is different, utilize Bao Xingge effect control resilience, precision is low, bad adaptability.
Summary of the invention
The object of the invention is exactly to the above shortcoming of prior art, has designed a kind of flexible roll forming device and calibration steps based on machine vision.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of flexible roll forming device based on machine vision is made up of forming machine, support and the guide rail, calibrating installation, machine vision detection device and the computer control system thereof that are connected on the support.It is characterized in that being furnished with the calibrating installation of control product resilience behind the forming machine; Three checkout gears of machine vision detection device are installed in the front and back of two passage frames of calibrating installation respectively; And the data of coming the handling machine vision inspection apparatus to detect by computer control system; Thereby the motion of control calibrating installation; Collimation angle to calibrating installation is carried out online adjusting, with the resilience control of the product that satisfies different size, different materials.Every time calibration frame of said calibrating installation all by about two frames form, and can horizontally slip along guide rail, regulate the distance between two frames, to satisfy the calibration of different size, material product.
Another goal of the invention of the present invention provides a kind of flexible roll forming calibration steps based on machine vision.This calibration steps may further comprise the steps:
First machine vision detection device detects the shaping angle signal of roll forming product; Calculating collimation angle and producing servosignal through computer control system; Through the first passage frame of computer control system control driven by servomotor calibrating installation, product is carried out the calibration first time then; Second machine vision detection device detects the shaping angle through product behind the primary calibration again, by the second passage frame of computer control system control calibrating installation, product carried out secondary calibration.Through twice adjusting, can effectively reduce the error that resilience causes like this.The formed product of the 3rd machine vision detection device after to secondary calibration carries out last detection, and feeds back to computer control system, constantly regulates again, makes product quality reach higher precision.The on-line monitoring and the adjusting of roll forming process have so just been realized.
The present invention has following technique effect:
1, because the present invention is based on the calibrating installation of machine vision, can monitor in real time, improve the controllability of product processing the variation in the sheet material roll forming process;
2, because the present invention can adjust the roll angle to the changes of section of sheet material in the roll forming process in good time, compensation has improved the precision of product owing to the error that resilience causes;
3, the present invention is simple to operate, and automaticity is high, and efficient improves, and is safe and reliable.
Description of drawings
Fig. 1 is the general illustration of roll forming device of the present invention.
Fig. 2 is the sketch map of the calibrating installation of roll forming device of the present invention.
Fig. 3 is the left frame front view of the calibrating installation of roll forming device of the present invention.
Fig. 4 is the left frame left view of the calibrating installation of roll forming device of the present invention.
Fig. 5 is the left frame vertical view of the calibrating installation of roll forming device of the present invention.
Fig. 6 is the sketch map of embodiments of the invention.
Fig. 7 is the final cross sectional shape of embodiments of the invention.
Fig. 8 is the final products entity of embodiments of the invention.
Among the figure: the 1-roll coil of strip, 2-sheet material, 3-forming machine, first machine vision detection device of 4-, the 5-calibrating installation first passage frame, second machine vision detection device of 6-; The 7-calibrating installation second passage frame, the 3rd machine vision detection device of 8-, 9-computer control system, 10-support, the left and right frame of 11-, 12-servomotor; The 13-guide rail, 14-body, 15-bolt, 16-worm screw, 17-worm gear, 18-arc-shaped guide rail; 19-side roller, 20-side roll shaft end cap, 21-hexagon socket head cap screw, 22-bottom roller end cap, 23-needle bearing, 24-bottom roller axle; The 25-bottom roller, 26-uses in the hole elasticity baffle ring, 27-rolling bearing, roller seat in the roll shaft in the 28-sleeve, 29-, 30-; Roller lid in the roller in the 31-, 32-, 33-needle bearing, 34-side roller support, 35-bolt, 36-worm gear seat; The 37-needle bearing, 38-retainer, the cross sectional shape after the 39-resilience, the cross sectional shape of bending excessively during the 40-calibration, the cross sectional shape that 41-is desirable.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is advanced an explanation.
Like Fig. 1, shown in Figure 2, roll forming device of the present invention comprises forming machine 3, support 10, is fixed on guide rail 13, calibrating installation 5,7,16,17, machine vision detection device 4,6,8 and computer control system 9 thereof on the support.
Select the worm and gear that has auto-lock function driving mechanism for use as the adjustable housing 5,7 of calibrating installation like Fig. 3, side roller 19 shown in Figure 4 and transmission device thereof.Two needle bearings of worm gear 17 usefulness are fixed in the worm gear seat 36.Worm gear 17 and retainer 38 fixation side roller supports 34 all are fixed with an arc-shaped guide rail 18 on worm gear 17 and the retainer 38 simultaneously.Two needle bearings 33 are equipped with in side roller 19 inside, and are with 6 hexagon socket head cap screws 21 that side roll shaft end cap 20 is fixing simultaneously, make the side roller can freely rotate when being fixed on the side roller support like this.
Like Fig. 3, shown in Figure 5, roll shaft 29 in being fixed with on the frame, hexagonal design is adopted in both sides, and interior roll shaft 29 is fixed interior roller 31 through sleeve 28, and said interior roller 31 is equipped with rolling bearing 27, and it is fixing with elasticity baffle ring 26 by the hole.
Like Fig. 3, shown in Figure 5, with 6 hexagon socket head cap screws that bottom roller axle 24 is fixing on the frame, bottom roller axle 24 1 sides adopt hexagonal design, and two needle bearings 23 are housed on it, and itself and bottom roller end cap 22 are fixed bottom roller 25.
Further specify calibration steps below in conjunction with Fig. 1,2,3,4,5 based on the flexible roll forming of machine vision.
The shaping angle of 4 pairs of roll forming products of first machine vision detection device detects, and calculates collimation angle and controls 5 pairs of products of the first passage frame that servomotor 12 drives calibrating installations and carry out first time and calibrate through computer control system 9; Second machine vision detection device 6 detects the formed product after the calibration again, and the 7 pairs of products of the second passage frame by computer control system 9 control calibrating installations carry out the calibration second time again; Formed product behind 8 pairs of secondary calibrations of the 3rd machine vision detection device carries out last detection; And feed back to computer control system 9, and carry out continuous calibration adjustments again, constantly regulate again; Make product quality reach higher precision, realize the on-line monitoring and the adjusting of roll forming.
Frame recited above is following to the products with calibration implementation procedure: servomotor 12 drives worm screw 17 and rotates; Worm gear 16 and retainer 38 in the drive lower edge of worm screw arc-shaped guide rail 18 do circumferential movement; Drive side roller 19 and rotate, changing the angle of roll, and then product is calibrated.
Embodiment
At room temperature adopt 3 to put up square of shape, whenever put up the shape angle and be followed successively by 30 °, 60 °, 90 °, frame spacing 250mm.Moulding material is Dogal 800DP, and the cross section is symmetrical U-shaped cross section, and sheet material length is 600mm, and width is 72.32mm, and thickness is 0.8mm, and shaping bent angle radius R is got 2mm.The speed that is shaped is made as 5m/s.Be depicted as the ideal form of product like 41 among Fig. 6.
Sheet material from roll, come out the back sheet material resilience can take place, first detected spring back angle of vision inspection apparatus is 2.11 °, as Fig. 6 39 shown in.Pass to computer control system to detected angle signal then, computer is confirmed the passage of calibration and is crossed bending angle through calculating.Here a time can be calibrated completion.Rotate through control device control driven by motor worm screw, and then drive worm gear and slide along arc-shaped guide rail, regulate the frame angle of calibrating installation with retainer, sheet material bending angle as Fig. 6 40 shown in.Detect sheet material through behind the calibrating installation with the 3rd vision inspection apparatus then, 90.2 ° of the workpiece angles of unloading, the final cross sectional shape of product is like Fig. 7, shown in 8.Through the data of experiment gained, the effect of its control resilience is that angle of bend is controlled at 90 ± 0.3 ° all the time after adjusting.
In sum; Flexible roll forming device and calibration steps based on machine vision of the present invention; Machine vision detection device is applied in the roll forming; Can realize the cross sectional shape of sheet material is carried out online detection, and then constantly adjust supply, reach the resilience of controlling sheet material well, the purpose that improves precision through calibrating installation.The range of work of the present invention and precision all are greatly improved, and have satisfied the needs of actual engineering.
The above; Be merely the preferable specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technical staff who is familiar with the present technique field is in the technical scope that the present invention discloses; The variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.
Claims (1)
1. flexible roll forming device based on machine vision; Form by forming machine (3), support (10), the guide rail (13), calibrating installation (5,7,16,17), three machine vision detection devices (4,6,8) and the computer control system (9) that are fixed on the support; It is characterized in that; Calibrating installation (5,7,16,17) is on guide rail (13); Described calibrating installation (5,7,16,17) is made up of two passage adjustable housings; Three machine vision detection devices (4,6,8) are in the front and back of the two passage adjustable housings (5,7) of calibrating installation, and handle the data that three machine vision detection devices (4,6,8) detect and the motion of control calibrating installation (5,7,16,17) by computer control system (9);
First machine vision detection device (4) detects the shaping angle of roll forming product, calculates collimation angle and controls the first passage adjustable housing (5) that servomotor (12) drives calibrating installation and product is carried out first time calibrate through computer control system (9); Second machine vision detection device (6) detects the formed product after the calibration again, and the second passage adjustable housing (7) by computer control system (9) control calibrating installation carries out the calibration second time to product again; The 3rd machine vision detection device (8) carries out last detection to the formed product behind the secondary calibration, and feeds back to computer control system (9), carries out continuous calibration adjustments again;
Two frames (11) about every time adjustable housing has, described two passage adjustable housings are all controlled by computer control system (9), and can drive lower edge guide rail (13) slip, the distance of two frames (11) about adjustment at servomotor (12); Said calibrating installation (5,7,16,17) by worm and gear with auto-lock function as transmission device; The frame of said calibrating installation (11) all goes up a fixing arc-shaped guide rail (18) at worm gear (17) and retainer (38), and side roller support (34) is fixing by worm gear (17) and retainer (38); Driven by servomotor worm screw (16) is rotated, and worm gear (17) is done circumferential movement with retainer (38) at the drive lower edge of worm screw (16) arc-shaped guide rail (18), drives side roller (19) and rotates, and changing the angle of side roller (19), and then product is calibrated.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102736219A CN101979174B (en) | 2010-09-06 | 2010-09-06 | Flexible roll bending forming device based on machine vision and calibration method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102736219A CN101979174B (en) | 2010-09-06 | 2010-09-06 | Flexible roll bending forming device based on machine vision and calibration method |
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| CN101979174A CN101979174A (en) | 2011-02-23 |
| CN101979174B true CN101979174B (en) | 2012-05-02 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108225937B (en) * | 2018-01-30 | 2023-09-22 | 北方工业大学 | Bending test method and device for high-strength steel sheet |
| CN109201877A (en) * | 2018-09-13 | 2019-01-15 | 江西晟威汽车零部件有限公司 | A kind of rolling profile machine |
| CN110421064B (en) * | 2019-08-28 | 2021-03-02 | 博瑞孚曼机械科技(苏州)有限公司 | Springback control method for ultrahigh-strength steel roll forming part |
| CN110788183A (en) * | 2019-10-21 | 2020-02-14 | 海宁金茂五金有限公司 | Sliding rail roll bending forming device in drawer guide rail |
| CN113145655B (en) * | 2021-04-23 | 2022-06-14 | 燕山大学 | Flexible row roller forming method for pipe machining |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB800349A (en) * | 1955-11-30 | 1958-08-27 | Bigwood Joshua & Son Ltd | Improvements in or relating to plate bending machines |
| FR2283741A1 (en) * | 1974-09-07 | 1976-04-02 | Luther Werke Luther Gmbh Et Co | THREE-ROLLER SHEET BENDING MACHINE WITH PRE-TENSIONED UPPER ROLLER |
| CN101646509A (en) * | 2007-02-21 | 2010-02-10 | 博尔德里尼股份公司 | Band roll bending board device |
| CN201799501U (en) * | 2010-09-06 | 2011-04-20 | 北方工业大学 | Flexible roll-bending forming device based on machine vision |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63157723A (en) * | 1986-12-22 | 1988-06-30 | Inoue Sangyo Kk | Roll bending device |
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- 2010-09-06 CN CN2010102736219A patent/CN101979174B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB800349A (en) * | 1955-11-30 | 1958-08-27 | Bigwood Joshua & Son Ltd | Improvements in or relating to plate bending machines |
| FR2283741A1 (en) * | 1974-09-07 | 1976-04-02 | Luther Werke Luther Gmbh Et Co | THREE-ROLLER SHEET BENDING MACHINE WITH PRE-TENSIONED UPPER ROLLER |
| CN101646509A (en) * | 2007-02-21 | 2010-02-10 | 博尔德里尼股份公司 | Band roll bending board device |
| CN201799501U (en) * | 2010-09-06 | 2011-04-20 | 北方工业大学 | Flexible roll-bending forming device based on machine vision |
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