CN105651782A - Engine cylinder cover defect automatic detection equipment based on machine vision - Google Patents
Engine cylinder cover defect automatic detection equipment based on machine vision Download PDFInfo
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- CN105651782A CN105651782A CN201510913729.2A CN201510913729A CN105651782A CN 105651782 A CN105651782 A CN 105651782A CN 201510913729 A CN201510913729 A CN 201510913729A CN 105651782 A CN105651782 A CN 105651782A
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Abstract
The invention discloses engine cylinder cover defect automatic detection equipment, and belongs to the field of machine vision detection equipment. The equipment mainly comprises a frame, a catching device, a delivering unit, a vision imaging unit, and an electric control unit. The catching device is arranged on the front end and is used to catch an engine cylinder cover from a transportation guide rail to a transmission device platform; the transmission device platform is arranged on the frame and can stably deliver the cylinder cover in a uniform speed; the vision imaging device is arranged on an optical support and is used to scan the images of cylinder cover; a position sensor is arranged on two side of the whole machine and is used to detect the position of cylinder cover during the transportation process; the control part of the equipment is connected to an IPC (industrial personal computer), and all control commands are sent by the IPC. The equipment is used to recognize and sort defects on the surface of engine cylinder cover such as sand holes, pores, bonded sand, scars, concave-convex, and the like; and thus the surface defects on the surface of cylinder cover can be automatically detected to ensure the stable and reliable quality of products.
Description
Technical field
The present invention relates to Machine Vision Detection field, particularly relate to a kind of engine cylinder cover surface imperfection automatic checkout equipment based on machine vision.
Background technology
Along with social economy is fast-developing and living standards of the people improve constantly, China's automobile localization process is constantly accelerated, and automobile consumption is in great demand, and automobile pollution keeps fast growth trend, impels China to become whole world automobile production and marketing first big country. Engine cylinder cover foundry goods is the core part of motor car engine, and engine cylinder-body cylinder cap, as the core part of motor car engine, is also one of batch production foundry goods the most complicated in automobile casting, and the core technology of engine mostly embodies a concentrated reflection of on cylinder block and head. The foundry goods of engine cylinder-body cylinder cap is that in engine production, difficulty is maximum, and a most important ring, and the performance such as the power of its quality team engine, oil consumption plays decisive effect. It may be said that the foundry engieering of cylinder block and head embodies the manufacturing capacity of engine, motor cylinder block cylinder head casting casting outfit and manufacture level thereof are one of important factors affecting motor performance.
Traditional detection method adopts artificial visual detection, this kind of detection method not only time-consuming, inefficiency, and it is subjective because have very big relation with the resolving power of the state of the art of inspector self, naked eyes, experience and fatigue etc., thus make detected result lack accuracy and standardization, become a bottleneck factor of restriction production efficiency and quality. The production environment of modernization, vision-based detection has become indispensable link. Developing rapidly of machine vision technique, make it can replace artificial vision to a certain extent and complete some work, in the task that quality inspection in high speed, big batch, continuous automatic production, process identification and dimensional measurement etc. have manually been difficult to especially, compared with the detection of mechanical vision inspection technology and traditional artificial visual, have fast, reliably and accurately advantage.
Current detection method adopts artificial visual detection, this kind of detection method not only time-consuming, inefficiency, and it is subjective because have very big relation with the resolving power of the state of the art of inspector self, naked eyes, experience and fatigue etc., thus make detected result lack accuracy and standardization, become a bottleneck factor of restriction production efficiency and quality.Cast(ing) surface defect automatic checkout system has automatic control light source, tuning on-line, multi-angle extraction image, travelling belt and acquisition system synchronization control function; The automatic collection of the special image software simulating defect of exploitation, analysis, identification; Drive separation mechanism to realize qualified product to be separated with the automatic of substandard products.
Summary of the invention
For the deficiency of above-mentioned technology, the present invention provides a kind of engine cylinder cover surface imperfection automatic checkout equipment based on machine vision. Its objective is to utilize the technology such as optical imagery, artificial intelligence, image procossing, pattern recognition, by the collection to engine cylinder cover image, process, identification, it is achieved engine cylinder cover surface hole defect, slight crack defect accurate, identify fast.
The technical scheme that the present invention adopts for achieving the above object is: a kind of aluminium shape surface based on machine vision lacks
Fall into detection method, comprise the following steps:
A kind of engine cylinder cover surface imperfection automatic checkout equipment based on machine vision, it is characterised in that: equipment comprises described engine cylinder cover grasping mechanism, transporting mechanism, imaging mechanism, sorting and caution system, image processing system and Controlling System; Described grasping mechanism power is provided by servomotor, gear and chain, and catching robot can move in X-axis and Y-axis; The engine cylinder cover position on production line determined by described cylinder cap grasping mechanism application positioned sensor, and catching robot captures the engine cylinder cover of position, moves to above delivery platform by X-axis, makes cylinder cap be placed on delivery platform; Cylinder cap position is determined by described positioned sensor, feed back to Controlling System, Controlling System control servomotor, it is determined that the translational speed of catching robot, capture time and crawl position; Described servomotor, positioned sensor, encoder are placed in frame, are connected with electric control unit, and electric control unit is connected with industrial computer.
Described transmission rig comprises transmission platform, transmits deflector roll, servomotor and encoder, described servomotor application chain is connected with transmission deflector roll, the rotating speed of Serve Motor Control transmission deflector roll, thus control the translational speed of transmission platform, described servomotor is connected with encoder, encoder is connected to industrial computer by electrical control system, and servomotor rotates speed, sends high low level speed by encoder and triggers intelligence collected by camera cylinder cap image.
Described imaging mechanism comprises intelligence camera, camera lens, light shield, LED illumination light source, light source setter and optics support; Described intelligent camera is connected with camera lens, and intelligence camera is connected to image pick-up card, and image pick-up card is placed on industrial computer host slot; Described light source setter regulates LED illumination light source brightness, and the brightness that intelligence camera utilizes LED/light source to provide is taken pictures to cylinder cap; Described light shield covers on above imaging mechanism, ensures imaging system not by the interference of foeign element; Described LED illumination light source is seated in optics support, and optics support is fixing architecturally; Described encoder sends high level signal, triggers intelligence collected by camera cylinder cap image.
Described sorting and caution system comprise sorter, defect warning lamp, servomotor and positioned sensor, described sorter and warning lamp are connected with Controlling System, when image processing system identification engine cylinder cover is substandard products, send triggering signal to Controlling System, Controlling System receives triggering signal, relay closes, warning lamp is bright; Described positioned sensor measures the movement position of cylinder cap, feeds back to Controlling System, and Controlling System triggers sorter work, and cylinder cap is rejected cylinder cap production line, and cylinder cap enters waste product district.
Described image processing system comprises industrial computer, image pick-up card and image procossing software, described industrial computer obtains engine cylinder cover image from image pick-up card, the image that image procossing software processes obtains, identify qualified and substandard products, and process information classification is sent to Controlling System and performs by topworks at different levels.
Described Controlling System is used for the connection of topworks at different levels and industrial computer, and assigns fill order at different levels by industrial computer, and Controlling System is distributed to a topworks and performs.
The advantage of patent of the present invention and useful effect be respectively:
1. current, the engine cylinder cover defects detection mode based on machine vision technique is not also applied at home. Machine vision Aulomatizeted Detect can more intuitively, more accurately detect engine cylinder cover surface imperfection, avoid the interference of the subjective factor of some in manual detection process, simultaneously test set can detect the engine cylinder cover of different model, ensures the accurate, reliable, at a high speed of detection.
2. the position of the optics support of the present invention and highly adjustable, regulates the position of intelligence camera and LED illumination light source, to adapt to the engine cylinder cover detection of different model according to engine cylinder cover model.
3. the present invention simple to operation, be easy to install, and cost is lower, for engine cylinder cover production line.
Accompanying drawing explanation
The structure principle chart of Fig. 1 position the present invention.
Fig. 2 is the structural representation of the present invention.
Fig. 3 is the imaging system structural representation of the present invention.
Fig. 4 is the schema of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further details:
Whole plant comprises industrial computer (image Acquire and process system), imaging system, Controlling System and complete machine mechanism as shown in Figure 1, image Acquire and process system is connected with imaging system, imaging system be fixed on complete machine mechanism and on analyte engine cylinder cover, servomotor on complete machine, positioned sensor, encoder, mechanism for sorting control unit are connected with Controlling System, and Controlling System is connected with industrial computer; Receive and dispatch instruction by industrial computer, control topworks at different levels.
The each integral part of the equipment that is illustrated in figure 2, at the structural representation of complete machine mechanism, comprises cylinder cap catching robot (3), transmission and supporting bracket (4), delivery platform (2), positioned sensor (5), optics support (8), imaging device (1), servomotor (9), transmits deflector roll (7), complete machine frame (6), electric control unit (13), alarming device (11) and sorting equipment (12); Grabbing device is in complete machine mechanism front end, and supports by two supporting brackets, and the X-axis of grabbing device uses rack-and-pinion linkage, and catching robot can move in X-axis, and lower end application gear, chain and servomotor connect, and servomotor provides and drives power; Transmission platform is placed on frame front, and bottom uses leading screw to connect, and servomotor provides and drives power, and the encoder that servomotor connects provides servomotor tach signal.
Described imaging moiety comprises intelligence camera (15), camera lens, optics support, LED illumination light source (14) and image pick-up card, intelligence camera and LED illumination light source screw-clamped are on optics support, optics props up and is placed in complete machine frame, and the fixed position of intelligence camera can regulate according to the angle of shooting and luminance brightness according to the position of shooting visual field adjustment height, LED illumination light source.
It is illustrated in figure 3 imaging system structural representation, comprise intelligence camera (15), LED illumination light source (14), wherein LED illumination light source (14) is placed in the back lower place of intelligence camera (15), and LED illumination light source (14) brightness can regulate brightness with the model of tested cylinder cap.
Shown electrical control division divides the hinge comprised for connecting industrial computer and topworks at different levels, and the process software inside industrial computer assigns various order to electrical control system, and electrical control system drives topworkies at different levels executable operations.
The principle of work of the present invention:
Cylinder cap grabbing device (3) is placed in transmission platform (2) front end, cylinder cap position measured by positioned sensor, and position signal is sent to industrial computer, and industrial computer judges that cylinder cap enters capture area, and give servomotor instruction issuing, driven by servomotor catching robot captures cylinder cap;Cylinder cap puts into the delivery platform of complete machine front portion after capturing, the positioned sensor of delivery platform both sides measures cylinder cap position, it is sent to industrial computer recording signal, industrial computer assigns startup command, servomotor starts, when position transducer records after engine cylinder cover enters image capturing area, the transfer rate shooting cylinder cap image of the encoder feedback that intelligence camera is connected according to servomotor; Image procossing and Controlling System identification engine cylinder cover in industrial computer are substandard products, send triggering signal to Controlling System, and Controlling System receives triggering signal, relay closes, and warning lamp is bright; Described positioned sensor measures the movement position of cylinder cap, feeds back to Controlling System, and Controlling System triggers sorter work, and cylinder cap is rejected cylinder cap production line, and cylinder cap enters waste product district, successively cyclical operation.
The performing step of the present invention is as follows:
1. the schema being illustrated in figure 4 the present invention, device start, the startup of whole set equipment can start two kinds of modes by manually starting with industrial computer relay;
2. engine cylinder cover current position measured by positioned sensor, and whether industrial computer captures cylinder cap according to when pre-test information Control servomotor;
3. when engine cylinder cover puts into transmission platform, positioned sensor perception cylinder cap position, according to when pre-test information, industrial computer determines whether intelligence camera gathers, when cylinder cap enters after by territory, exploiting field, intelligence camera carries out cylinder cap image collection, analyzing and processing and the operation such as sets; Encoder records the frequency acquisition of the movement velocity decision intelligence camera of engine cylinder cover.
4. cylinder cap image collection success, and image is carried out Treatment Analysis and identification, judging that whether cylinder cap is by detection, bad part eject substandard products occurs, warning lamp is bright, enters subsequent cycle detection; By detection, enter subsequent cycle detection.
Claims (10)
1. the engine cylinder cover surface imperfection automatic checkout equipment based on machine vision, it is characterised in that: comprise cylinder cap catching robot (3), transmission and supporting bracket (4), delivery platform (2), positioned sensor (5), optics support (8), imaging device (1), servomotor (9), transmit deflector roll (7), complete machine frame (6), electric control unit (13), alarming device (11) and sorting equipment (12), transmission platform (2) front end cylinder cap grabbing device (3), by cylinder cap delivery platform (2) in complete machine frame (6), the servomotor with encoder (9) is equipped with in lower section, described optics support (8) is placed in complete machine frame (6), imaging device (1) is placed in optics support (6), described positioned sensor (5) is positioned at complete machine (6) both sides, described alarming device (11) is positioned at complete machine (6) right side, described electric control unit (13) and servomotor, positioned sensor (5) connects, and described electric control unit (13) is connected with industrial computer.
2. by a kind of engine cylinder cover surface imperfection automatic checkout equipment based on machine vision described in claim book 1, it is characterized in that: described catching robot (3) is made up of transmission and holding bracket (4), servomotor, X-axis, Y-axis etc., catching robot can move in X-axis and Y-axis, determining cylinder cap position by locating device, catching robot puts into delivery platform after capturing cylinder cap.
3. by a kind of engine cylinder cover surface imperfection automatic checkout equipment based on machine vision described in claim book 1 or 2, it is characterized in that: the engine cylinder cover grabbed is placed on delivery platform (2), delivery platform drives leading screw by the servomotor (9) below complete machine frame (6), realize the transmission of cylinder cap uniform and stable, gather image for imaging device (1).
4. by a kind of engine cylinder cover surface imperfection automatic checkout equipment based on machine vision described in claim book 1 or 3, it is characterized in that: imaging device comprises LED illumination light source (14), intelligence camera (15), camera lens and capture card, described LED illumination light source (14), intelligence camera (15) are placed on optics support (8), entirety is fixed on above complete machine frame (6), and described camera is connected with capture card.
5. by a kind of engine cylinder cover surface imperfection automatic checkout equipment based on machine vision described in claim book 1 or 2, it is characterized in that: described positioned sensor (5) is for measuring the current position of engine cylinder cover (16), the cylinder cap (16) that described cylinder cap catching robot (3) captures is placed on delivery platform (2), transmits cylinder cap (16) for the shooting imaging of imaging device.
6. by a kind of engine cylinder cover surface imperfection automatic checkout equipment based on machine vision described in claim book 1 or 2, it is characterized in that: the servomotor (9) of described band encoder measures the movement velocity of engine cylinder cover (16), feed back in industrial computer image pick-up card, control intelligence camera (15) frequency acquisition, intelligence camera (15) imaging photo is sent in industrial computer by capture card, for processing and set.
7. by a kind of engine cylinder cover surface imperfection automatic checkout equipment based on machine vision described in claim book 1 or 2, it is characterized in that: described sorting equipment (12) and warning lamp (11) are for sorting cylinder cap (16) kind after identification, when setting defective cylinder cap (16), cylinder cap (16) transport production line rejected by sorting equipment (12), and warning lamp (11) sends warning.
8. by a kind of engine cylinder cover surface imperfection automatic checkout equipment based on machine vision described in claim book 1 or 2, it is characterized in that: described electric control unit (13) comprises image pick-up card, rly., PMAC card and operation button, wherein image pick-up card and PMAC card are connected with industrial computer, and the operational order of topworks is issued to each topworks by industrial computer.
9. by a kind of engine cylinder cover surface imperfection automatic checkout equipment based on machine vision described in claim book 1 or 2, it is characterised in that: described transmission platform (2) uses gear to be connected with transmission deflector roll (7), and speed is by Serve Motor Control (9).
10. by a kind of engine cylinder cover surface imperfection automatic checkout equipment based on machine vision described in claim book 1 or 2, it is characterised in that: described imaging device (1) skin all uses the outer cover of sealing to cover, for shielding extraneous interference source.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510913729.2A CN105651782A (en) | 2015-12-12 | 2015-12-12 | Engine cylinder cover defect automatic detection equipment based on machine vision |
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| CN201510913729.2A CN105651782A (en) | 2015-12-12 | 2015-12-12 | Engine cylinder cover defect automatic detection equipment based on machine vision |
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| CN201510913729.2A Pending CN105651782A (en) | 2015-12-12 | 2015-12-12 | Engine cylinder cover defect automatic detection equipment based on machine vision |
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| CN106525866A (en) * | 2016-12-29 | 2017-03-22 | 重庆市江津区恩聪机械厂 | Cylinder cover defect detection system and detection flow thereof |
| CN106645189A (en) * | 2016-12-28 | 2017-05-10 | 重庆远创光电科技有限公司 | Automatic commutator appearance defect online visual detection system |
| CN106645174A (en) * | 2016-12-28 | 2017-05-10 | 重庆远创光电科技有限公司 | Automatic online visual apparent-defect inspection system for general purpose engine |
| CN106679532A (en) * | 2016-12-26 | 2017-05-17 | 重庆荣易达铝业有限公司 | Cylinder head hole inspection device |
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| CN108544470A (en) * | 2018-04-12 | 2018-09-18 | 无锡黎曼机器人科技有限公司 | The de-stacking of visual guidance engine cylinder cover and detection robot |
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| CN109900708A (en) * | 2019-03-22 | 2019-06-18 | 上汽通用五菱汽车股份有限公司 | A kind of detection device for engine cylinder body top surface and cylinder holes defect |
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| CN106679532A (en) * | 2016-12-26 | 2017-05-17 | 重庆荣易达铝业有限公司 | Cylinder head hole inspection device |
| CN106802301A (en) * | 2016-12-27 | 2017-06-06 | 江苏大学 | The machine vision on-line detecting system and method for a kind of engine valve |
| CN106802301B (en) * | 2016-12-27 | 2020-02-07 | 江苏大学 | Machine vision online detection system and method for engine valve |
| CN106645189A (en) * | 2016-12-28 | 2017-05-10 | 重庆远创光电科技有限公司 | Automatic commutator appearance defect online visual detection system |
| CN106645174A (en) * | 2016-12-28 | 2017-05-10 | 重庆远创光电科技有限公司 | Automatic online visual apparent-defect inspection system for general purpose engine |
| CN106525866A (en) * | 2016-12-29 | 2017-03-22 | 重庆市江津区恩聪机械厂 | Cylinder cover defect detection system and detection flow thereof |
| CN107589124A (en) * | 2017-02-13 | 2018-01-16 | 上海佑生源环境工程有限公司 | Online wood-based plate surface defects detection based on machine vision is graded system and method |
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| CN108544470A (en) * | 2018-04-12 | 2018-09-18 | 无锡黎曼机器人科技有限公司 | The de-stacking of visual guidance engine cylinder cover and detection robot |
| CN108917594A (en) * | 2018-05-29 | 2018-11-30 | 广东理工学院 | A kind of machine vision device measuring household board size |
| CN109470704A (en) * | 2018-05-31 | 2019-03-15 | 武汉深海弈智科技有限公司 | A kind of automobile brake support defects of vision detection system and its detection method |
| CN110873716A (en) * | 2018-09-03 | 2020-03-10 | 法视特（上海）图像科技有限公司 | Automatic appearance detection equipment for electronic components |
| CN109900708A (en) * | 2019-03-22 | 2019-06-18 | 上汽通用五菱汽车股份有限公司 | A kind of detection device for engine cylinder body top surface and cylinder holes defect |
| CN110286639A (en) * | 2019-07-03 | 2019-09-27 | 杨江滨 | A kind of high accuracy number control device |
| CN110599481A (en) * | 2019-09-18 | 2019-12-20 | 成都数之联科技有限公司 | Cement prefabricated plate detection system based on image recognition |
| WO2021120493A1 (en) * | 2019-12-17 | 2021-06-24 | 苏州巨能图像检测技术有限公司 | Fully automatic flaw detection mechanism for plugging holes |
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| CN111307824A (en) * | 2020-04-08 | 2020-06-19 | 山东交通学院 | Pit defect detection device on surface of wooden board |
| CN111307824B (en) * | 2020-04-08 | 2023-03-21 | 山东交通学院 | Pit defect detection device on surface of wooden board |
| CN111505013A (en) * | 2020-04-20 | 2020-08-07 | 刘金涛 | Warm edge spacer machine vision detection device and method based on deep learning |
| CN113111946A (en) * | 2021-04-15 | 2021-07-13 | 宁波九纵智能科技有限公司 | Quality control method and system integrating hands, eyes and brains |
| CN115508369A (en) * | 2022-11-24 | 2022-12-23 | 济南凯瑞特铸造有限公司 | Engine cylinder block casting cylinder hole detection device |
| CN116175202A (en) * | 2023-04-24 | 2023-05-30 | 山东德晟机器人股份有限公司 | Automatic processing and detecting production line for speed reducer shell assembly |
| CN116175202B (en) * | 2023-04-24 | 2023-08-15 | 山东德晟机器人股份有限公司 | Automatic processing and detecting production line for speed reducer shell assembly |
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