CN103341451B - Automatic detection device for small-sized mirror-like workpiece surface flatness and method thereof - Google Patents
Automatic detection device for small-sized mirror-like workpiece surface flatness and method thereof Download PDFInfo
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- CN103341451B CN103341451B CN201310222199.8A CN201310222199A CN103341451B CN 103341451 B CN103341451 B CN 103341451B CN 201310222199 A CN201310222199 A CN 201310222199A CN 103341451 B CN103341451 B CN 103341451B
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Abstract
The invention discloses an automatic detection device for small-sized mirror-like workpiece surface flatness and a method thereof. The device comprises a pedestal, a vibrating material plate, a conveying track, a rotary detection platform and a computer. The vibrating material plate and the rotary detection platform are both arranged on the pedestal, and the vibrating material plate is connected with the rotary detection platform by the conveying track. The rotary detection platform comprises a supporting shaft vertically arranged on the pedestal, the upper end of the supporting shaft is connected with a conveying disc, and the lower end of the supporting shaft is connected with a driving motor. A first high-speed CCD photography device, a first inferior elimination device, a sample turn-over mechanism, a second high-speed CCD photography device, a second inferior elimination device and a qualified product collector are successively arranged along a circumferential edge of the conveying disc. The device has the advantages of compact structure, convenient use and high automation degree; and with the method, the work efficiency can be greatly improved, the labor intensity of detection personnel is significantly reduced, errors of manual operation can be avoided, and the accuracy of small-sized mirror-like workpiece detection is substantially improved.
Description
Technical field
The present invention relates to a kind of electronic devices and components checkout equipment and method, be specifically related to a kind of class minute surface miniature workpiece surface smoothness automatic detection device and method thereof.
Background technology
Class minute surface miniature workpiece is widely used in electronic information, communication, industrial automation, medicine equipment, automobile and machinery wait in electronic information aid and equipment, because the technique of producing workpiece is more, different operation all may produce mechanical property and the underproof product of physical characteristic, for general miniature workpiece, various defect can be there is in its surface magnet surface that is machined and the rear formation of plating, these defects have influence on the performance uniformity of magnetic workpiece on the one hand, also the corrosion resistance of permanent-magnet material can be had influence on the other hand, thus affect its working life, the quality of the product that the quality (particularly blemish) of mechanical property directly decides.
At present, the surface defects detection of enterprise's miniature workpiece in enormous quantities is based on artificial visually examine, due to workpiece is less must by the instrument such as magnifying glass and microscope, difficulty is brought to concrete operations, simultaneously because surface of the work reflection is strong, easily there is undetected and misjudgement phenomenon in artificial visually examine, and operating efficiency is extremely low, working strength is very big, and production cost is very big.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the present invention proposes a kind of class minute surface miniature workpiece surface smoothness automatic detection device and method thereof.
Technical scheme: for solving the problems of the technologies described above, class minute surface miniature workpiece surface smoothness automatic detection device of the present invention, comprise base, vibrating tray, delivery track, rotation monitor station and computer, described vibrating tray is all arranged on base with rotation monitor station, helical orbit is provided with in described vibrating tray, the delivery outlet of vibrating tray is connected with one end of delivery track, and the other end of delivery track is connected with rotation monitor station; Rotate monitor station and comprise the bolster being installed vertically on base, bolster upper end is connected with conveying disk, bolster lower end is connected with drive motors, and the circumferential edges along conveying disk is provided with the first high-speed CCD camera, the first substandard products device for eliminating, sample turn-over mechanism, the second high-speed CCD camera, the second substandard products device for eliminating and certified products collector successively; First high-speed CCD camera is connected with computer respectively with the second high-speed CCD camera.
As preferably, described first high-speed CCD camera by support installing in base, first high-speed CCD camera comprises the first high-speed CCD video camera and the first Structured Illumination light source, described first Structured Illumination light source comprises the first normal illumination sources and the first optics graticle, first optics graticle acutangulates with the plane normal rotating monitor station the outer ledge being placed in and rotating above monitor station, optical axial and the plane normal rotating monitor station of described first high-speed CCD video camera acutangulate to be placed in and rotate inner side above monitor station, the normal of described first optics graticle, the optical axial of the first high-speed CCD video camera and the rotation of rotation monitor station are in same plane, the intersection point of the normal of the first optics graticle and the optical axial of the first high-speed CCD video camera is positioned at the top rotating monitor station inside edge.
As preferably, described first substandard products device for eliminating is fixedly installed in by support and rotates inner side above monitor station, first substandard products device for eliminating comprises the first air-blast atomizer, the first air-operated solenoid valve, the first high-pressure air pipe and the first substandard products disposable box, described first air-blast atomizer points to along the radial direction of conveying disk the outside rotating monitor station, first air-blast atomizer rear end is connected with the first air-operated solenoid valve by the first high-pressure air pipe, first substandard products disposable box is arranged at the relative position of the first air-blast atomizer, is positioned at the side-lower rotating monitor station.
As preferably, described sample turn-over mechanism is fixed on base by support, and be suspended in conveying disk edge, sample turn-over mechanism comprises upper supporting roller, snub pulley, belt conveyor, drive motors and sample dragging track; Described snub pulley is arranged at the below of conveying disk, and the roller carrier shaft of snub pulley is parallel with conveying disc level face; Upper supporting roller is arranged at the top outside conveying disk, and the roller carrier shaft of upper supporting roller is acute angle with the angle of the horizontal plane of conveying disk, and the lower end of upper supporting roller is higher than conveying disk; Described sample dragging track upper end is connected with belt conveyor upper side, and sample dragging track lower end is connected with conveying disk border.
As preferably, be provided with image analysis system in described computer, image analysis system comprises framing unit, filter unit, cutting unit and correcting unit; Drive motors under conveying disk is variable-frequency motor, can regulate the rotating speed of drive motors as required, makes to carry the translational speed of the workpiece to be detected on disk mountain peak to meet the speed of the first high-speed CCD camera and the second high-speed CCD camera.Second high-speed CCD camera comprises the second high-speed CCD video camera and the first Structured Illumination light source, and described second Structured Illumination light source comprises the second normal illumination sources and the second optics graticle; Described second substandard products device for eliminating comprises the second air-blast atomizer, the second air-operated solenoid valve, the second high-pressure air pipe and the second substandard products disposable box; First high-speed CCD video camera is connected with the input of computer respectively with the output of the second high-speed CCD video camera.
Wherein, described second high-speed CCD camera and the second substandard products device for eliminating are mainly used in the workpiece through sample turn-over mechanism turn-over again to carry out the work of IMAQ, image analysis system analysis and bad part eject.
The invention also discloses the detection method of above-mentioned class minute surface miniature workpiece surface smoothness automatic detection device, the method comprises following detecting step:
(1) miniature workpiece to be detected is put into vibrating tray, workpiece slides into by delivery track the edge rotating monitor station successively under the effect of vibration of vibrating tray;
(2) rotate monitor station at the uniform velocity to turn clockwise under the effect of drive motors, workpiece on rotation monitor station is first through the first high-speed CCD camera, the optics graticle continuous imaging shooting of the workpiece reflection that the high-speed CCD video camera of the first high-speed CCD camera at the uniform velocity passes through forming a line, and image is inputted computer;
(3) image analysis system in computer to gather graticle image position, filtering, segmentation, correction, obtain the optics reticule plane view data that single workpiece reflects, the optics reticule plane view data of this planar image data and standard mirror-reflection is compared;
(4) if do not meet the picture specification requirement of standard mirror-reflection, image analysis system will send the instruction of removing defective work to the first substandard products device for eliminating, when rotating monitor station and workpiece being rotated to position corresponding to the first substandard products device for eliminating, first substandard products device for eliminating then performs the instruction of image analysis system, will be judged as that underproof workpiece is blown in substandard products disposable box;
(5) if meet the picture specification requirement of standard mirror-reflection, image analysis system can not send the instruction of removing defective work to the first substandard products device for eliminating, rotate monitor station to continue to rotate, take workpiece to residing for sample turn-over mechanism correspondence position simultaneously, workpiece slips into sample dragging track at belt conveyor end, sample turn-over is realized at this, workpiece through turn-over enters conveying disk again, and again through the second high-speed CCD camera and the second substandard products device for eliminating, repeat the step of above-mentioned (2), (3) and (4), finally leave qualified workpiece;
(6) not disallowable qualified workpiece continues reach under the drive of conveying disk, finally falls in certified products collector in baffle effect.
Beneficial effect: class minute surface miniature workpiece surface smoothness automatic detection device of the present invention and method thereof, utilize the vibration of vibrating tray that workpiece is in line, rotation detection platform is slided to along delivery track, successively by the first high-speed CCD camera, first substandard products device for eliminating, sample turn-over mechanism, second high-speed CCD camera and the second substandard products device for eliminating, underproof workpiece is made to be blown into the first substandard products disposable box and the second substandard products disposable box respectively, remaining certified products then continue to move along rotation detection platform, finally fall into certified products collector.
The present invention is per minute can detect 300 ~ 600 workpiece, it is tens times of manual detection speed, operating efficiency is greatly improved, significantly alleviate the labour intensity of testing staff, and apparatus structure of the present invention is compact, easy to use, automaticity is high, adopt devices and methods therefor of the present invention, manually-operated error can be avoided, greatly improve the accuracy that class minute surface miniature workpiece detects.
Accompanying drawing explanation
Fig. 1 is general arrangement of the present invention;
Fig. 2 is the top view of Fig. 1;
Fig. 3 is the workpiece schematic diagram that the present invention detects automatically;
Fig. 4 is the side view of the workpiece that the present invention detects automatically.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further described.
As depicted in figs. 1 and 2, class minute surface miniature workpiece surface smoothness automatic detection device of the present invention, comprise base 1, vibrating tray 2, delivery track 3, rotate monitor station 4 and computer, vibrating tray 2 is all arranged on base 1 with rotation monitor station 4, helical orbit is provided with in vibrating tray 2, the delivery outlet of vibrating tray 2 is connected with one end of delivery track 3, and the other end of delivery track 3 is connected with the edge rotating monitor station 4; Rotate monitor station 4 and comprise the bolster 42 being installed vertically on base 1, bolster 42 upper end is connected with conveying disk 41, bolster 42 lower end is connected with drive motors 43, and the circumferential edges along conveying disk 41 is provided with the first high-speed CCD camera 5, first substandard products device for eliminating 6, sample turn-over mechanism 7, second high-speed CCD camera, the second substandard products device for eliminating and certified products collector 8 successively; First high-speed CCD camera 5 is connected with computer respectively with the second high-speed CCD camera 9.
In the present embodiment, first high-speed CCD camera 5 by support installing in base 1, first high-speed CCD camera 5 comprises the first high-speed CCD video camera 51 and the first Structured Illumination light source 52, first Structured Illumination light source 52 comprises the first normal illumination sources and the first optics graticle, first optics graticle acutangulates with the plane normal rotating monitor station 4 outer ledge being placed in and rotating above monitor station 4, and this acute angle is generally 75 °.In each example, this angle is once determine follow-up just can not change again, because the parameter of video camera is all demarcated.Optical axial and the plane normal rotating monitor station 4 of the first high-speed CCD video camera 51 acutangulate to be placed in and rotate inner side above monitor station 4, and this acute angle is generally 75 °.The rotation of the normal of the first optics graticle, the optical axial of the first high-speed CCD video camera 51 and rotation monitor station 4 is in same plane, the intersection point of the normal of the first optics graticle and the optical axial of the first high-speed CCD video camera 51 is positioned at and rotates 1 ~ 2mm place above monitor station 4, near the edge rotating detection platform 4.
In the present embodiment, first substandard products device for eliminating 6 is fixedly installed in by support and rotates inner side above monitor station 4, first substandard products device for eliminating 6 comprises the first air-blast atomizer 61, first air-operated solenoid valve, the first high-pressure air pipe and the first substandard products disposable box 64, first air-blast atomizer 61 points to along the radial direction of conveying disk 41 outside rotating monitor station 4, first air-blast atomizer 61 rear end is connected with the first air-operated solenoid valve by the first high-pressure air pipe, and the first substandard products disposable box 64 is arranged at the side-lower of the rotation monitor station 4 of the first air-blast atomizer 61 offside.
In the present embodiment, sample turn-over mechanism 7 is fixed on base 1 by support, is suspended in conveying disk 41 edge, comprises upper supporting roller 71, snub pulley 72, belt conveyor 73, drive motors 43 and sample dragging track 74; Snub pulley 72 is arranged at the below of conveying disk 41, roller carrier shaft and conveying disk 41 plane-parallel of snub pulley 72; Upper supporting roller 71 is arranged at the top outside conveying disk 41, and the roller carrier shaft of upper supporting roller 71 is acute angle with the angle of the horizontal plane of conveying disk 41, is generally 60 °; And the lower end of upper supporting roller 71 is higher than conveying disk 41; Sample dragging track 74 upper end is connected with belt conveyor 73 upper side, sample dragging track 74 lower end and conveying disk 41 edge conjunction.
Wherein, be provided with image analysis system in computer, image analysis system comprises framing unit, filter unit, cutting unit and correcting unit; The basic structure of the second high-speed CCD camera 9 is roughly the same with the basic structure of the first high-speed CCD camera 5, comprise the second high-speed CCD video camera 91 and the first Structured Illumination light source 92, second Structured Illumination light source 92 comprises the second normal illumination sources 921 and the second optics graticle 922; Second substandard products device for eliminating 10 comprises the second air-blast atomizer 101, second air-operated solenoid valve 103, second high-pressure air pipe and the second substandard products disposable box 104; First high-speed CCD video camera 51 is connected with the input of computer respectively with the output of the second high-speed CCD video camera 91.
Wherein, the second high-speed CCD camera 9 and the second substandard products device for eliminating 10 are mainly used in the workpiece through sample turn-over mechanism 7 turn-over again to carry out the work of IMAQ, image analysis system analysis and bad part eject.
The invention also discloses class minute surface miniature workpiece surface smoothness automatic testing method.
As shown in Figure 3 and Figure 4, the workpiece for measurement in the present embodiment is typical disk and circular Nd-Fe-Bo permanent magnet material element, and disk or annulus peripheral chamfer are also through anti-corrosion process such as plating.Its technical standard is shown in GB/T 18880-2002.Because tested Nd-Fe-Bo permanent magnet material number of elements is huge, manually cannot detect its surface quality situation one by one, its outward appearance can only be detected with or without fracture, great cut, the significant deficiency such as burr, so devices and methods therefor of the present invention will be adopted to detect, comprise following detecting step:
(1) miniature workpiece to be detected is put into vibrating tray 2, workpiece slides into by delivery track 3 edge rotating monitor station 4 successively under the effect of vibration of vibrating tray 2; Wherein, establish helical orbit in vibrating tray 2, helical orbit can only hold single Nd-Fe-Bo permanent magnet material disk (or and annulus) workpiece and queue up successively and pass through;
(2) rotate monitor station 4 at the uniform velocity to turn clockwise under the effect of drive motors 43, workpiece on rotation monitor station 4 is first through the first high-speed CCD camera 5, first optics graticle 522 continuous imaging shooting of the workpiece reflection that high-speed CCD video camera 51 at the uniform velocity passes through forming a line, and image is inputted computer; Wherein, drive motors 43 is variable-frequency motor, can regulate the rotating speed of drive motors 43 as required, makes the translational speed of Nd-Fe-Bo permanent magnet material disk (or annulus) workpiece on conveying disk 41 meet the requirement of the first high-speed CCD camera 5;
(3) computer-internal image analysis system to gather graticle image position, filtering, segmentation, correction, obtain the optics reticule plane view data that single workpiece reflects, the optics reticule plane view data of this planar image data and standard mirror-reflection is compared;
(4) if do not meet the picture specification requirement of standard mirror-reflection, image analysis system will send the instruction of removing defective work to the first substandard products device for eliminating 6, when rotating monitor station 4 and workpiece being rotated to the position of the first substandard products device for eliminating 6 correspondence, first substandard products device for eliminating 6 performs the instruction of image analysis system, will be judged as that underproof workpiece is blown in the first substandard products disposable box 64;
(5) if meet the picture specification requirement of standard mirror-reflection, image analysis system can not send the instruction of removing defective work to the first substandard products device for eliminating 6, rotate monitor station 4 to continue to rotate, take workpiece to residing for sample turn-over mechanism 7 correspondence position simultaneously, workpiece slips into sample dragging track 74 at belt conveyor 73 end, sample turn-over is realized at this, workpiece through turn-over enters conveying disk 41 again, and again through the second high-speed CCD camera and the second substandard products device for eliminating, repeat above-mentioned (2), and the step of (4) (3), finally leave qualified workpiece,
(6) not disallowable qualified workpiece continues reach under the drive of conveying disk 41, finally falls in certified products collector 8 in baffle plate 81 effect.
In sum, apparatus structure of the present invention is compact, and it is only per minute that detection speed can reach 300-600, and be tens times of manual detection speed, operating efficiency is greatly improved, and significantly reduces the labour intensity of testing staff.Method of the present invention is easy to operate, only need pour vibrating tray 2 into by needing the class minute surface miniaturized component in heaps detected, utilize the vibration of vibrating tray 2 that element is fitly in line, be delivered on along the rail moving in vibrating tray 2 to delivery track 3 and rotate detection platform 4, be arranged on rotate the first high-speed CCD camera 5 above detection platform 4 to queue up through the element optics graticle imaging of reflecting after input the image analysis system of computer, and compare with the optics graticle view data (these data are stored in image processing system) of standard mirror-reflection, result after comparison feeds back to the first substandard products device for eliminating 6 in time, if detect substandard product, defective work blowout is rotated detection platform 4 by the first substandard products device for eliminating 6, falls into the first substandard products disposable box 64.The element that one side is qualified enters sample turn-over mechanism 74 under rotation detection platform 4 drives, again enter after turn-over and rotate detection platform 4, then the reverse side catoptric imaging situation through the second high-speed CCD camera 9 pairs of elements is analyzed, identical with before turn-over of its course of work, certified products continue to move along rotation detection platform 4, finally fall into certified products collector 8.Automaticity of the present invention is high, can avoid manually-operated error, greatly improves the accuracy that class minute surface miniaturized component detects.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (5)
1. a detection method for class minute surface miniature workpiece surface smoothness automatic detection device, is characterized in that:
The method based on class minute surface miniature workpiece surface smoothness automatic detection device comprise base (1), vibrating tray (2), delivery track (3), rotate monitor station (4) and computer, described vibrating tray (2) is all arranged on base (1) with rotation monitor station (4), vibrating tray is provided with helical orbit in (2), the delivery outlet of vibrating tray (2) is connected with one end of delivery track (3), and the other end of delivery track (3) is connected with rotation monitor station (4), rotate monitor station (4) and comprise the bolster (42) being installed vertically on base (1), bolster (42) upper end is connected with conveying disk (41), bolster (42) lower end is connected with drive motors (43), circumferential edges along conveying disk (41) is provided with the first high-speed CCD camera (5) successively, first substandard products device for eliminating (6), sample turn-over mechanism (7), second high-speed CCD camera (9), second substandard products device for eliminating (10) and certified products collector (8), first high-speed CCD camera (5) is connected with computer respectively with the second high-speed CCD camera (9),
The method comprises following detecting step:
(1) miniature workpiece to be detected is put into vibrating tray (2), workpiece slides into by delivery track (3) edge rotating monitor station (4) successively under the effect of vibration of vibrating tray (2);
(2) rotate monitor station (4) at the uniform velocity to turn clockwise under the effect of drive motors (43), workpiece in rotation monitor station (4) is first through the first high-speed CCD camera (5), the optics graticle continuous imaging shooting of the workpiece reflection that the first high-speed CCD video camera (51) at the uniform velocity passes through forming a line, and image is inputted computer;
(3) image analysis system in computer to gather graticle image position, filtering, segmentation, correction, obtain the optics reticule plane view data that single workpiece reflects, the optics reticule plane view data of this planar image data and standard mirror-reflection is compared;
(4) if do not meet the picture specification requirement of standard mirror-reflection, image analysis system will send the instruction of removing defective work to the first substandard products device for eliminating (6), when rotating monitor station (4) and workpiece being rotated to position corresponding to the first substandard products device for eliminating (6), first substandard products device for eliminating (6) then performs the instruction of image analysis system, will be judged as that underproof workpiece is blown in the first substandard products disposable box (64);
(5) if meet the picture specification requirement of standard mirror-reflection, image analysis system can not send the instruction of removing defective work to the first substandard products device for eliminating (6), rotate monitor station (4) to continue to rotate, workpiece is taken to the residing correspondence position of sample turn-over mechanism (7) simultaneously, workpiece slips into sample dragging track (74) at belt conveyor (73) end, sample turn-over is realized at this, workpiece through turn-over enters conveying disk (41) again, and again through the second high-speed CCD camera (9) and the second substandard products device for eliminating (10), identical with before turn-over of second high-speed CCD camera (9) and second substandard products device for eliminating (10) course of work,
(6) not disallowable qualified workpiece continues reach under the drive of conveying disk (41), finally falls in certified products collector (8) in baffle plate (81) effect.
2. the detection method of class minute surface miniature workpiece surface smoothness automatic detection device according to claim 1, it is characterized in that: described first high-speed CCD camera (5) by support installing in base (1), first high-speed CCD camera (5) comprises the first high-speed CCD video camera (51) and the first Structured Illumination light source (52), described first Structured Illumination light source (52) comprises the first normal illumination sources (521) and the first optics graticle (522), first optics graticle (522) acutangulates with the plane normal rotating monitor station (4) outer ledge being placed in and rotating monitor station (4) top, optical axial and the plane normal rotating monitor station (4) of described first high-speed CCD video camera (51) acutangulate to be placed in and rotate inner side, monitor station (4) top, the normal of described first optics graticle (522), the optical axial of the first high-speed CCD video camera (51) and the rotation of rotation monitor station (4) are in same plane, the intersection point of the normal of the first optics graticle (522) and the optical axial of the first high-speed CCD video camera (51) is positioned at the top rotating monitor station (4) inside edge.
3. the detection method of class minute surface miniature workpiece surface smoothness automatic detection device according to claim 1, it is characterized in that: described first substandard products device for eliminating (6) is fixedly installed in by support and rotates inner side, monitor station (4) top, first substandard products device for eliminating (6) comprises the first air-blast atomizer (61), first air-operated solenoid valve (62), first high-pressure air pipe and the first substandard products disposable box (64), described first air-blast atomizer (61) points to along the radial direction of conveying disk (41) outside rotating monitor station (4), first air-blast atomizer (61) rear end is connected with the first air-operated solenoid valve (62) by the first high-pressure air pipe, first substandard products disposable box (64) is arranged at the position relative with the first air-blast atomizer (61), be positioned at the side-lower rotating monitor station (4).
4. the detection method of class minute surface miniature workpiece surface smoothness automatic detection device according to claim 1, it is characterized in that: described sample turn-over mechanism (7) is fixed on base (1) by support, be suspended in conveying disk (41) edge, sample turn-over mechanism (7) comprises upper supporting roller (71), snub pulley (72), belt conveyor (73), drive motors (43) and sample dragging track (74); Described snub pulley (72) is arranged at the below of conveying disk (41), roller carrier shaft and conveying disk (41) plane-parallel of snub pulley (72); Upper supporting roller (71) is arranged at the top in conveying disk (41) outside, the roller carrier shaft of upper supporting roller (71) is acute angle with the angle of the horizontal plane of conveying disk (41), and the lower end of upper supporting roller (71) is higher than conveying disk (41); Described sample dragging track (74) upper end is connected with belt conveyor (73) upper side, sample dragging track (74) lower end and conveying disk (41) edge conjunction.
5. the detection method of class minute surface miniature workpiece surface smoothness automatic detection device according to claim 2, it is characterized in that: be provided with image analysis system in described computer, image analysis system comprises framing unit, filter unit, cutting unit and correcting unit; Described second high-speed CCD camera (9) comprises the second high-speed CCD video camera (91) and the second Structured Illumination light source (92), and described second Structured Illumination light source (92) comprises the second normal illumination sources (921) and the second optics graticle (922); Described second substandard products device for eliminating (10) comprises the second air-blast atomizer (101), the second air-operated solenoid valve (103), the second high-pressure air pipe and the second substandard products disposable box (104); First high-speed CCD video camera (51) is connected with the input of computer respectively with the second high-speed CCD video camera (91).
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| CN103341451A (en) | 2013-10-09 |
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