CN208042989U - A kind of large-scale sheet metal works almost T-stable automatic detection device - Google Patents
A kind of large-scale sheet metal works almost T-stable automatic detection device Download PDFInfo
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- CN208042989U CN208042989U CN201820547772.0U CN201820547772U CN208042989U CN 208042989 U CN208042989 U CN 208042989U CN 201820547772 U CN201820547772 U CN 201820547772U CN 208042989 U CN208042989 U CN 208042989U
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- 238000001514 detection method Methods 0.000 title claims abstract description 49
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- 238000012423 maintenance Methods 0.000 claims 1
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- 238000012372 quality testing Methods 0.000 abstract description 2
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Abstract
The utility model is related to a kind of large-scale sheet metal works almost T-stable automatic detection devices, put sheet workpiece to be measured in monitor station unit upper surface, three-dimensional motion execution unit is installed on above monitor station unit, sensing unit is installed on three-dimensional motion execution unit, acquires the original image of sheet workpiece to be measured；The X-axis movement executing mechanism that three-dimensional motion executes includes two X-axis slide rails, is parallelly mounted to two sides position on the pedestal of monitor station unit；Y-axis movement executing mechanism includes portal frame and Y-axis sliding rail, and two stabilizer blades of portal frame are slidably mounted in X-axis slide rail, and Y-axis sliding rail is horizontally mounted on the crossbeam of portal frame；Z axis movement executing mechanism perpendicular to the direction of pedestal to be slidably mounted in Y-axis sliding rail.The utility model is acquired by the way of macro micro- combination obtains workpiece for measurement original image, can realize to large-size workpiece quality testing, both can guarantee accuracy of detection, while can not be limited by workpiece size, improve detection range and accuracy of detection.
Description
Technical field
The utility model is related to a kind of workpiece almost T-stable detection technique, specially a kind of large-scale sheet metal works are several
What automatic detection device for quality.
Background technology
Modern manufacturing industry increasingly tends to the characteristics of " multi items, small lot ", and sheet fabrication field is to the flexibility of production
It is required that also higher and higher, the workpiece quality detection in production process is extremely important.Workpiece almost T-stable automatic detection device application
In sheet metal manufacturing line, work pieces process almost T-stable is measured in real time in process of production, when detecting work
When part processing quality is overproof, information warning is sent out in time, avoids the generation of batch waste product, is conducive to the production effect for improving production line
Rate and automatization level.
The processing almost T-stable problem of sheet metal workpiece include mainly unprocessed hole size is overproof, Working position mistake and
It is inconsistent etc. to process hole number.Traditional detection method is carried out by vernier caliper, template either three coordinate measuring machine.But
Traditional measurement mode is unable to measure whole outline positions of workpiece, it is difficult to measurement request is fully met, such as large scale work
The detection etc. of part and complex part.
In contrast, mechanical vision inspection technology has many advantages, such as that non-contact, speed is fast, precision is high, strong antijamming capability,
It is widely used in the fields such as product quality detection at present, vision detection technology is to solve product automation measurement to carry
Effective solution scheme is supplied.But (planar dimension is more than the thin-sheet metal work of 500mm*500mm in large-scale sheet metal works
Part) almost T-stable context of detection, high various restrictions are required due to measuring size big, measurement accuracy, are not still obtained
Universal, existing detection device needs ultrahigh resolution DV to realize that high-precision detects, expensive, and detects workpiece ruler
It is very little limited.
Utility model content
The deficiencies of workpiece size is limited is not popularized and detected for mechanical vision inspection technology in the prior art, this
Utility model will solve the problems, such as to be to provide that a kind of accuracy of detection is high, and detection speed is fast, the low large-scale sheet gold of manufacturing cost
Metal work-pieces almost T-stable automatic detection device.
In order to solve the above technical problems, the technical solution adopted in the utility model is：
A kind of large-scale sheet metal works almost T-stable automatic detection device of the utility model, including：
Monitor station unit, three-dimensional motion execution unit and sensing unit, wherein put to be measured in monitor station unit upper surface
Sheet workpiece, three-dimensional motion execution unit are installed on above monitor station unit, and sensing unit is installed on three-dimensional motion execution unit
On, the original image of sheet workpiece to be measured is acquired, and be transmitted in industrial personal computer.
Three-dimensional motion execution unit includes X-axis, Y-axis, Z axis movement executing mechanism, wherein X-axis movement executing mechanism includes
Two X-axis slide rails are parallelly mounted to two sides position on the pedestal of monitor station unit；Y-axis movement executing mechanism includes gantry
Two stabilizer blades of frame and Y-axis sliding rail, portal frame are slidably mounted in X-axis slide rail, and Y-axis cunning is horizontally mounted on the crossbeam of portal frame
Rail；Z axis movement executing mechanism perpendicular to the direction of pedestal to be slidably mounted in Y-axis sliding rail, Z axis movement executing mechanism bottom end peace
Fill sensing unit.
Sensing unit, including global sensing unit and local sensing unit, wherein global sensing unit includes global images
Machine and laser range sensor, the two are installed on Z axis movement executing mechanism bottom end side in such a way that optical axis is parallel；Local sensing
Unit is installed on the Z axis movement executing mechanism bottom end other side, including partial camera and additional source of light, and additional source of light is strip light
Source is set to camera lens both sides.
Monitor station unit includes back light and pedestal, and impact faces two sides are equipped with sliding rail, between two sliding rails for for
The glass table top of sheet workpiece to be measured is put, back light is set to monitor station unit pedestal lower part, and global camera lens are just
Opposite side.
The original image of the industrial personal computer receiving sensing unit acquisition is handled, output workpiece almost T-stable detection knot
Fruit；The instruction output end of industrial personal computer is connect with three-dimensional motion execution unit.
The utility model has the advantages that and advantage：
1. the utility model is acquired by the way of macro micro- combination obtains workpiece for measurement original image, can realize to big ruler
Very little workpiece quality detection, both can guarantee accuracy of detection, while can not be limited by workpiece size.
2. the utility model proposes detection device greatly improve detection range and accuracy of detection, ensure testing result
Reliability；Due to not needing superhigh precision digital camera, manufacturing cost is reduced.
3. the utility model can realize automatic, the on-line checking of large-scale sheet metal works almost T-stable, contribute to
Improve the production efficiency of large-scale sheet metal works.
Description of the drawings
Fig. 1 is utility model device composition schematic diagram；
Fig. 2 is utility model device three dimensional structure diagram；
Fig. 3 is global sensing unit structures schematic diagram in the utility model；
Fig. 4 is monitor station cellular construction schematic diagram in the utility model；
Fig. 5 is the detection method general flow chart that the utility model uses；
Fig. 6 is the stream handled the workpiece image of global camera acquisition in the detection method that the utility model uses
Cheng Tu；
Fig. 7 is to be handled the workpiece sequence image of local camera acquisition in the detection method that the utility model uses
Flow chart.
Wherein, 1 is sensing unit, and 2 be industrial personal computer, and 3 be image processing unit, and 4 be parameter setting and control unit, and 5 are
Host computer, 6 be portal frame, and 7 be pedestal, and 8 be back light, and 9 be monitor station unit, and 10 be Z axis movement executing mechanism, and 11 be Y
Axis movement executing mechanism, 12 be X-axis movement executing mechanism, and 13 be three-dimensional motion execution unit, and 14 be local sensing unit, and 15 are
Global sensing unit, 16 be global video camera, and 17 are and laser range sensor, and 18 be detection glass table top, and 19 be to be measured thin
Plate workpiece.
Specific implementation mode
The utility model is further elaborated with reference to the accompanying drawings of the specification.
As shown in Fig. 1~2, a kind of large-scale sheet metal works almost T-stable automatic detection device of the utility model, packet
It includes：Monitor station unit 9, three-dimensional motion execution unit 13 and sensing unit 1, wherein put to be measured in 9 upper surface of monitor station unit
Sheet workpiece 19, three-dimensional motion execution unit 13 are installed on 9 top of monitor station unit, and sensing unit 1 is installed on three-dimensional motion and holds
On row unit 13, the original image of sheet workpiece 19 to be measured is acquired, and is transmitted in industrial personal computer 2.
The original image that industrial personal computer receiving sensing unit 1 acquires is handled, and workpiece almost T-stable testing result is exported；Work
The instruction output end of control machine is connect with three-dimensional motion execution unit (13).
As shown in Fig. 2, three-dimensional motion execution unit 13 includes X-axis, Y-axis, Z axis movement executing mechanism, wherein X-axis moves
Executing agency 12 includes two X-axis slide rails, is parallelly mounted to the two sides position on the pedestal 7 of monitor station unit 9；Y-axis moves
Executing agency 11 includes portal frame 6 and Y-axis sliding rail, and two stabilizer blades of portal frame 6 are slidably mounted in X-axis slide rail, portal frame 6
Y-axis sliding rail is horizontally mounted on crossbeam；Z axis movement executing mechanism 10 perpendicular to the direction of pedestal 6 to be slidably mounted on Y-axis sliding rail
In, sensing unit 1 is installed in the bottom end of Z axis movement executing mechanism 10.
Sensing unit 1, including global sensing unit 15 and local sensing unit 14, wherein global sensing unit 15 includes
Global video camera 16 and laser range sensor 17, the two are installed on 10 bottom of Z axis movement executing mechanism in such a way that optical axis is parallel
Hold side；Local sensing unit 14 is installed on the 10 bottom end other side of Z axis movement executing mechanism, including partial camera and additional optical
Source, additional source of light are strip source, are set to camera lens both sides.
As shown in figure 3, monitor station unit 9 include back light 8 and pedestal 7, pedestal 7 above two sides be equipped with sliding rail, two
It is the glass table top for putting sheet workpiece to be measured between sliding rail, back light 8 is set to 7 lower part of monitor station unit pedestal, takes the photograph
The right opposite position of camera lens.
As shown in Figure 1, industrial personal computer 2 includes image processing unit 3 and parameter setting and control unit 4, wherein image procossing
Unit 3 is connect with the control output end of parameter setting and control unit 4, at the original image that receiving sensing unit 1 acquires
Reason, obtains workpiece almost T-stable information, includes mainly workpiece plate thickness information, geometric profile information etc., and is done pair with processing criterion
Than, and export workpiece almost T-stable testing result to parameter setting and control unit 4；Parameter setting and control unit 4 respectively with
Sensing unit 1, image processing unit 3, three-dimensional motion execution unit 13 carry out communication connection, to sensing unit 1, image procossing list
Member 3 and each parameter of three-dimensional motion execution unit 13 are configured.
Parameter setting and control unit also carry out communication with host computer and connect.
In the present embodiment, image processing unit 3 and parameter setting and control unit 4 run work to be passed through by CPU processor
The function module of control machine Software Create.Sensing unit 1 is moved to test position by three-dimensional motion execution unit 13.Monitor station list
Back light 8 in member 9 is that global sensing unit 15 provides floor light, the dragon in pedestal 7 and three-dimensional motion execution unit 13
Door frame 6 plays the role of support, it is ensured that the stability that three-dimensional motion execution unit 13 moves.
Sensing unit 1 is acquired by the way of macro, micro- combination obtains workpiece for measurement original image, is sensed respectively by the overall situation
Unit 15 acquires the general image of workpiece, and the local sequence image of workpiece is acquired by local sensing unit 14.
In the present embodiment, X-axis movement executing mechanism 12, Y-axis movement executing mechanism 11 in three-dimensional motion execution unit 13
And Z axis movement executing mechanism 10, select the synchronous toothed belt linear robot of suitable stroke as execution according to workpiece size
Mechanism.X-axis movement executing mechanism 12 includes driving shaft and driven shaft, is installed on pedestal both sides, Y-axis movement executing mechanism 11 and Z
Axis movement executing mechanism 10 is installed on portal frame 6.It is vertical that global sensing unit 15 and local sensing unit 14 are fixedly mounted on
Two check bits of 10 end of Z axis movement executing mechanism in direction are realized the switching of different detection height and positions by Z axis, are located at
The camera of topography's test position can carry out uniform motion in X-axis and Y direction, to realize adopting for sequence topography
Collection.
As shown in figure 3, global sensing unit 15 is made of global video camera 16 and laser range sensor 17, wherein global
Video camera can shoot workpiece general image, select 5,000,000 pixel industrial cameras as global video camera in the present embodiment.Laser
Distance measuring sensor can detect thickness of workpiece.
As shown in figure 4, back light 8 is set in monitor station unit pedestal 7, it is located at the right opposite of 16 camera lens of global video camera
Position, it is abrasion-resistance glass table top 18 that LED light strip, pedestal detection platform are selected in the present embodiment.
The course of work of the utility model is as follows：
By large scale sheet metal workpiece, that is, sheet workpiece to be measured 19 to be detected be placed in detection glass table top 18 on, first by
Parameter setting and control unit 4 control back light 11 and illuminate entire 19 region of sheet workpiece to be measured, then control Z axis Motor execution
Mechanism 10 moves so that the global sensing unit 15 of its end installation moves to global detection position, by global video camera 16 in backlight
A width sheet metal workpiece general image is acquired under 8 lighting condition of light source；
Secondly, control Z axis movement executing mechanism 10 moves to local check bit, control X, Y-axis movement executing mechanism 12,11
Sheet metal edge start position is moved to, control back light 8 is closed, and the item of additional source of light in local sensing unit 14 is controlled
Illumination bright gold category sheet material workpiece regional area, local sensing unit 14 can carry out uniform motion in X-axis and Y direction, with
It realizes the acquisition of sequence topography, until entire workpiece planarization is completed in acquisition, and acquired image is passed through
Cameralink cables or cable send image processing unit 3 to, by image processing unit 3 to collected sheet metal workpiece
Original image is handled, and is detected to almost T-stable；
Parameter setting is configured each parameter of sensing unit 1 and image processing unit 3 with control unit 4, and respectively
Communication is carried out with sensing unit 1, image processing unit 3 and host computer 5 to connect.
In the utility model, thin-sheet metal workpiece of the planar dimension more than 500mm*500mm is large-scale sheet metal work
Part.
As shown in figure 5, it is several to carry out workpiece for the large-scale sheet metal works almost T-stable method that the utility model uses
Workflow schematic diagram when what quality testing, this approach includes the following steps：
Global sensing unit moves to test position, respectively by global camera acquisition sheet workpiece general image, by swashing
Ligh-ranging sensor measurement and sends image processing unit to the distance of workpiece；
Image processing unit handles global image, obtains processing hole number and each hole center, and identify circular arc and
The pels such as line segment determine primitive types and all types of pel quantity, and calculate thickness of workpiece information；
Whether the quantity of detection hole meets the requirements；
Whether detection thickness of workpiece meets the requirements；
Whether the type based on primitive information detection hole meets the requirements；
If the quantity in hole, thickness of workpiece and the type based on primitive information detection hole are satisfied by requirement, by part
Camera acquisition workpiece sequence image, and send image processing unit to；
The local sequence image of image processing unit processing, identification obtain the dimension information and location information of pel；
Whether the size and position for detecting pel meet the requirements；
Export testing result.
As shown in fig. 6, being handled the workpiece image of global camera acquisition in the method used for the utility model
Flow chart, the image processing unit handle global image, include the following steps：
In step 101, thin-sheet metal workpiece original image is acquired；Step 102 carries out image flame detection, with inclining for correcting image
Tiltedly or distortion, adjustment image make the bottom edge of workpiece in image be horizontal；
Step 103 obtains area-of-interest and extracts workpiece to remove interference region according to gradation of image information, segmentation
Region；
Step 104 carries out Threshold segmentation to region of interest area image, can be with according to Threshold segmentation due to using back light
The hole on workpiece is extracted, the center of the quantity and each hole in hole is calculated；
Edge closure contour feature of the step 105 based on sub-pixel edge extraction algorithm drawing holes uses in the present embodiment
The edge in canny operator extractions hole；
It is element figure that step 106, which divides each closed contour, each closed contour can be divided into line segment and m circle
Arc；
Step 107 calculates the quantity of each closed contour middle conductor pel and circular arc pel, identifies and record the class in each hole
Type.
As shown in fig. 7, being handled the workpiece image of local camera acquisition in the method used for the utility model
Flow chart, the image processing unit processing sequence topography includes the following steps：
In step 201, thin-sheet metal workpiece sequence part original image is acquired；
In step 202, it is based on texture information, splices sequence image, to obtain workpiece general image；
Step 203, to spliced image, the edge closure profile based on sub-pixel edge extraction algorithm drawing holes；
Step 204, it is element figure to divide each closed contour；
Step 205, identification forms the pel size and pel location information of each closed contour.
Workpiece almost T-stable is judged, if the quantity of detection hole, plate thickness, processing hole type, the size of each pel and position
It all meets the requirements, then exports testing result qualification, otherwise, then it is unqualified to export testing result.Complete the several of thin-sheet metal workpiece
What quality Identification and judgement, it is final to realize automatic detection.
The utility model is acquired by the way of macro, micro- combination obtains workpiece for measurement original image, can realize to big ruler
Very little workpiece quality detection, both can guarantee accuracy of detection, while can not be limited by workpiece size.
Claims (5)
1. a kind of large-scale sheet metal works almost T-stable automatic detection device, it is characterised in that including：
Monitor station unit, three-dimensional motion execution unit and sensing unit, wherein put thin plate to be measured in monitor station unit upper surface
Workpiece, three-dimensional motion execution unit are installed on above monitor station unit, and sensing unit is installed on three-dimensional motion execution unit, adopts
Collect the original image of sheet workpiece to be measured (19), and is transmitted in industrial personal computer.
2. large-scale sheet metal works almost T-stable automatic detection device according to claim 1, it is characterised in that：Three
It includes X-axis, Y-axis, Z axis movement executing mechanism that maintenance and operation, which moves execution unit (13), wherein X-axis movement executing mechanism (12) includes two
A X-axis slide rail is parallelly mounted to two sides position on the pedestal of monitor station unit；Y-axis movement executing mechanism (11) includes dragon
Two stabilizer blades of door frame and Y-axis sliding rail, portal frame are slidably mounted in X-axis slide rail, and Y-axis cunning is horizontally mounted on the crossbeam of portal frame
Rail；Z axis movement executing mechanism perpendicular to the direction of pedestal to be slidably mounted in Y-axis sliding rail, Z axis movement executing mechanism bottom end peace
Fill sensing unit.
3. large-scale sheet metal works almost T-stable automatic detection device according to claim 1, it is characterised in that：It passes
Feel unit (1), including global sensing unit (15) and local sensing unit (14), wherein global sensing unit (15) includes complete
Office's video camera (16) and laser range sensor (17), the two are installed on Z axis movement executing mechanism bottom in such a way that optical axis is parallel
Hold side；Local sensing unit (14) is installed on the Z axis movement executing mechanism bottom end other side, including partial camera and additional optical
Source, additional source of light are strip source, are set to camera lens both sides.
4. large-scale sheet metal works almost T-stable automatic detection device according to claim 1, it is characterised in that：Inspection
Scaffold tower unit (9) includes back light (8) and pedestal (7), and two sides are equipped with sliding rail to pedestal (7) above, are to use between two sliding rails
In the glass table top for putting sheet workpiece to be measured, back light (8) is set to monitor station unit pedestal (7) lower part, global video camera
The right opposite position of camera lens.
5. large-scale sheet metal works almost T-stable automatic detection device according to claim 1, it is characterised in that：Institute
The original image for stating industrial personal computer receiving sensing unit (1) acquisition is handled, and workpiece almost T-stable testing result is exported；Industrial personal computer
Instruction output end connect with three-dimensional motion execution unit (13).
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| CN201820547772.0U CN208042989U (en) | 2018-04-17 | 2018-04-17 | A kind of large-scale sheet metal works almost T-stable automatic detection device |
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| CN201820547772.0U CN208042989U (en) | 2018-04-17 | 2018-04-17 | A kind of large-scale sheet metal works almost T-stable automatic detection device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108489394A (en) * | 2018-04-17 | 2018-09-04 | 沈阳建筑大学 | A kind of large-scale sheet metal works almost T-stable automatic detection device and method |
| CN112945135A (en) * | 2021-01-20 | 2021-06-11 | 湖北文理学院 | Rapid mapping device and method for tracing instrument |
| CN113063347A (en) * | 2021-03-04 | 2021-07-02 | 华东交通大学 | Three-dimensional coordinate measuring device for complex bent pipe |
-
2018
- 2018-04-17 CN CN201820547772.0U patent/CN208042989U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108489394A (en) * | 2018-04-17 | 2018-09-04 | 沈阳建筑大学 | A kind of large-scale sheet metal works almost T-stable automatic detection device and method |
| CN112945135A (en) * | 2021-01-20 | 2021-06-11 | 湖北文理学院 | Rapid mapping device and method for tracing instrument |
| CN113063347A (en) * | 2021-03-04 | 2021-07-02 | 华东交通大学 | Three-dimensional coordinate measuring device for complex bent pipe |
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