CN111323421A - Intelligent rubber ring detection equipment - Google Patents

Intelligent rubber ring detection equipment Download PDF

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Publication number
CN111323421A
CN111323421A CN201811533725.1A CN201811533725A CN111323421A CN 111323421 A CN111323421 A CN 111323421A CN 201811533725 A CN201811533725 A CN 201811533725A CN 111323421 A CN111323421 A CN 111323421A
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CN
China
Prior art keywords
servo motor
light source
rubber ring
detection
fixedly connected
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Withdrawn
Application number
CN201811533725.1A
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Chinese (zh)
Inventor
吴阳勋
李永明
郑政
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Liyue Intelligent Technology Research Guangzhou Co ltd
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Liyue Intelligent Technology Research Guangzhou Co ltd
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Application filed by Liyue Intelligent Technology Research Guangzhou Co ltd filed Critical Liyue Intelligent Technology Research Guangzhou Co ltd
Priority to CN201811533725.1A priority Critical patent/CN111323421A/en
Publication of CN111323421A publication Critical patent/CN111323421A/en
Withdrawn legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84Systems specially adapted for particular applications
    • G01N21/88Investigating the presence of flaws or contamination

Abstract

The invention discloses an intelligent rubber ring detection device, belonging to the technical field of rubber ring detection, comprising a detection system and a device platform, wherein the detection system comprises a light source module, a mechanical transmission module, an image acquisition module and a computer, the mechanical transmission module comprises a first servo motor, a second servo motor and a stepping motor, the device platform comprises a first bracket, the first bracket is connected with the first servo motor, the output end of the first servo motor is connected with a coupler, the coupler is connected with a first screw rod, a first slide block is in threaded connection with the first screw rod, the intelligent system detection of an O-shaped rubber ring by introducing a machine vision system can be realized, the detection mode is comprehensive, the size and surface quality defects of the rubber ring can be detected simultaneously, the detection efficiency and precision are obviously improved, and human errors can be almost ignored, the stability of the detection data is high, and the situations of false detection and missed detection are avoided.

Description

Intelligent rubber ring detection equipment
Technical Field
The invention relates to the technical field of rubber ring detection, in particular to intelligent rubber ring detection equipment.
Background
The rubber seal ring is an annular cover composed of one or more parts, is fixed on one ferrule or gasket of the bearing and is in contact with the other ferrule or gasket or forms a narrow labyrinth gap to prevent lubricating oil from leaking out and foreign matters from entering.
The rubber sealing ring is an important industrial product, is a basic part of a plurality of industries, has excellent and important functions of water resistance, oil resistance, shock absorption, sealing and the like, the quality of the rubber sealing ring directly determines the performance and the service life of the product, even the personal and property safety, the rubber sealing ring comprises a plurality of types, and comprises an O-shaped sealing ring, a Y-shaped sealing ring, a Z-shaped sealing ring, a YX-shaped sealing ring for holes and the like according to the type, wherein the O-shaped sealing ring is most common and has the most extensive application, the geometric shape is simple, the production is convenient, and the cost is low.
Because the restriction of production technology level, some defects can exist inevitably in the rubber circle, for example, the size is not uniform, the cutting is uneven, the surface is damaged, the recess etc., these defects can influence the sealing performance of rubber circle, also can cause the safety problem simultaneously, can bring huge economic loss for user and enterprise even, consequently, the rubber circle all need carry out special detection before dispatching from the factory, only detect qualified could dispatch from the factory and get into market, but the most manual work that is detected to current rubber circle detection mode, not only detection efficiency is low, the human cost is high, and it is not high to detect the precision, there are the condition of false retrieval and missed retrieval, human error has been introduced, it is relatively poor to detect data stability.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide intelligent rubber ring detection equipment which can be used for realizing the intelligent system detection of an O-shaped rubber ring by introducing a machine vision system, has a comprehensive detection mode, can be used for simultaneously detecting the size and surface quality defects of the rubber ring, obviously improves the detection efficiency and precision, almost ignores human errors, has high detection data stability and avoids the situations of false detection and missed detection.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
An intelligent rubber ring detection device comprises a detection system and a device platform, wherein the detection system comprises a light source module, a mechanical transmission module, an image acquisition module and a computer, the mechanical transmission module comprises a first servo motor, a second servo motor and a stepping motor, the device platform comprises a first bracket, the first bracket is connected with the first servo motor, the output end of the first servo motor is connected with a coupler, the coupler is connected with a first lead screw, a first sliding block is connected onto the first lead screw in a threaded manner, a first smooth guide rail is fixedly connected into the inner end of the first bracket, a first sliding hole matched with the first smooth guide rail is formed in the first sliding block, the first sliding block is connected with the first smooth guide rail in a sliding manner, a first connecting block is fixedly connected onto the upper end of the first sliding block, and a bottom plate is fixedly connected onto the upper end of the first connecting block, the upper end of the bottom plate is fixedly connected with a second connecting block, the output end of the second servo motor is connected with a second lead screw, a second slider is in threaded connection with the second lead screw, a second smooth guide rail is fixedly connected with the inner end of the bottom plate, the second smooth guide rail is perpendicular to the first smooth guide rail, a second sliding hole matched with the second smooth guide rail is formed in the second slider, the second slider is in sliding connection with the second smooth guide rail, a second bracket is fixedly connected with the upper end of the bottom plate and is connected with the second servo motor, the output end of the stepping motor is connected with a rotary transmission shaft, the rotary transmission shaft is positioned in the second bracket, a mounting plate is fixedly connected with the upper end of the second bracket and is connected with the stepping motor, a light source fixing plate is fixedly connected with the upper end of the mounting plate, and an annular LED light source is connected with the upper end of the, annular LED light source upper end is connected with the glass objective table, and fixed connection between glass objective table lower extreme and the rotating transmission axle, glass objective table upper end fixedly connected with spacing ring can realize introducing machine vision system and carry out intelligent system to O type rubber circle and detect, and the detection mode is comprehensive, can detect the size and the surface quality defect of rubber circle simultaneously, is showing to increase detection efficiency and precision, and human error almost can be ignored, and it is high to detect data stability, avoids appearing the condition of false retrieval and missed measure.
Further, the light source module comprises a PC (personal computer), a MAX232, a single chip microcomputer, a comparator CD4585, an LED drive circuit and an LED light source, wherein the LED light source comprises a surface light source and a self-made light source, the intensity of the LED light source is automatically controlled through a program, the surface light source is used for detecting the size defect of the rubber ring, and the self-made light source is used for detecting the surface quality defect of the rubber ring.
Furthermore, the image acquisition module comprises a CCD camera and a lens, the CCD camera is an MV-EM200C black-and-white surface scanning camera, the highest resolution of the MV-EM200C black-and-white surface scanning camera is 1600 x 1200, the data volume acquired by the black-and-white camera is less than that of a color picture, the subsequent processing of the picture by a subsequent computer is facilitated, the higher the resolution is under the condition that the acquisition field of view is not changed, the higher the capability of distinguishing the bright and dark details of the picture is, and the detection precision requirement of the visual detection system is greatly met.
Furthermore, the lens adopts a fixed focal length lens, the model of the fixed focal length lens is AFT-0614MP, the focal length is 6mm, light rays are conveniently gathered, the size of a view field is controlled, and the overall performance of a visual system is improved.
Furthermore, the models of the first servo motor and the second servo motor are RGH22X types, the precision can reach 0.001mm, the stepping motor is of a binomial type, the stepping angle is 1.8 degrees, the precision is 0.03 degrees, the precision is extremely high, errors are not easy to occur in the detection process, and the condition of missing detection is not easy to occur.
Furthermore, a GigE ethernet is connected between the image acquisition module and the computer and is used for rapidly transmitting the image data acquired by the image acquisition module to the computer in real time for image processing and analysis.
Furthermore, the CCD camera is connected with a data acquisition board card, and the model of the data acquisition board card is PCI1711 and is used for acquiring data acquired by the CCD camera in real time.
Furthermore, the mechanical transmission module further comprises a motion control board card, the model of the motion control board card is MPC08, the motion control board card is connected with the first servo motor, the second servo motor and the stepping motor, the motion of the first servo motor, the second servo motor and the stepping motor is intelligently controlled, and the control precision is high.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) this scheme can realize introducing machine vision system and carry out intelligent system to O type rubber circle and detect, and the detection mode is comprehensive, can detect the size and the surface quality defect of rubber circle simultaneously, is showing and increases detection efficiency and precision, and human error can be ignored almost, and it is high to detect data stability, avoids appearing the condition of false retrieval and hourglass detection.
(2) The detection device breaks through the traditional manual detection or semi-mechanized detection, can realize the detection accuracy close to ninety-nine percent, has high detection speed, reduces the labor cost, and obviously improves the qualification rate of the factory-leaving rubber ring.
Drawings
FIG. 1 is a schematic structural diagram of a mechanical transmission module according to the present invention;
FIG. 2 is a functional block diagram of the present invention;
FIG. 3 is a diagram of a detection scheme of the present invention;
FIG. 4 is a schematic structural diagram of a light source module according to the present invention;
fig. 5 is an imaging schematic diagram of an image acquisition module of the present invention.
The reference numbers in the figures illustrate:
001 detecting system, 002 light source module, 003 mechanical transmission module, 004 image acquisition module, 005 computer, 1 first support, 2 first servo motor, 3 shaft couplings, 4 first sliders, 5 first smooth guide rails, 6 first connecting blocks, 7 bottom plates, 8 second connecting blocks, 9 second sliders, 10 second smooth guide rails, 11 second lead screws, 12 second servo motors, 13 second supports, 14 step motors, 15 mounting plates, 16 light source fixing plates, 17 annular LED light sources, 18 glass object stages, 19 first lead screws, 20 spacing rings.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise specifically stated or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are used in a broad sense, and for example, "connected" may be a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, and a communication between two elements.
Example (b):
referring to fig. 1-5, an intelligent rubber ring detection device comprises a detection system 001 and a device platform, wherein the detection system 001 comprises a light source module 002, a mechanical transmission module 003, an image acquisition module 004 and a computer 005, the mechanical transmission module 003 comprises a first servo motor 2, a second servo motor 12 and a stepping motor 14, the first servo motor 2 and the second servo motor 12 are automatic control systems which enable the output controlled quantity of the position, the orientation, the state and the like of an object to follow any change of an input target, the first servo motor 2 and the second servo motor 12 mainly use pulse positioning and speed control, the precision is very high, the stepping motor 14 is an open-loop control element stepping motor device which converts an electric pulse signal into angular displacement or linear displacement, the rotating angle of the stepping motor 14 is proportional to the number of pulses, the precision is high, and the intelligent rubber ring detection device has excellent start-stop and reverse response, the equipment platform comprises a first bracket 1, the first bracket 1 is connected with a first servo motor 2, the output end of the first servo motor 2 is connected with a coupler 3, the coupler 3 is connected with a first screw rod 19, a first slide block 4 is in threaded connection with the first screw rod 19, the inner end of the first bracket 1 is fixedly connected with a first smooth guide rail 5, a first slide hole matched with the first smooth guide rail 5 is arranged on the first slide block 4, the first slide block 4 is in sliding connection with the first smooth guide rail 5, the upper end of the first slide block 4 is fixedly connected with a first connecting block 6, the upper end of the first connecting block 6 is fixedly connected with a bottom plate 7, the upper end of the bottom plate 7 is fixedly connected with a second connecting block 8, the output end of a second servo motor 12 is connected with a second screw rod 11, the second screw rod 11 is in threaded connection with a second slide block 9, the inner end of the bottom plate 7 is fixedly connected with a second smooth guide rail 10, and the second smooth guide rail 10 is, second slider 9 chisel have with the smooth guide rail 10 assorted second slide opening of second, and sliding connection between second slider 9 and the smooth guide rail 10 of second, bottom plate 7 upper end fixedly connected with second support 13, and second support 13 is connected with second servo motor 12, step motor 14's output is connected with the rotating transmission shaft, and the rotating transmission shaft is located second support 13, second support 13 upper end fixedly connected with mounting panel 15, and mounting panel 15 is connected with step motor 14, mounting panel 15 upper end fixedly connected with light source fixed plate 16, light source fixed plate 16 upper end is connected with annular LED light source 17, annular LED light source 17 upper end is connected with glass objective table 18, and fixed connection between glass objective table 18 lower extreme and the rotating transmission shaft, glass objective table 18 upper end fixedly connected with spacing ring 20, a rubber ring for the location waits to detect.
Referring to fig. 3, the light source module 002 includes a PC, a MAX232, a single chip microcomputer, a comparator CD4585, an LED driving circuit and an LED light source, the LED light source includes a surface light source and a self-made light source, the self-made light source is a digital uniform adjustable light source based on PWN pulses, the LED light source has the advantages of small volume and high stability, the uniformity of brightness can be improved by a combined arrangement mode, the uniformity of images is further improved, the intensity of the LED light source is automatically controlled by a program, the surface light source is used for detecting the size defect of the rubber ring, and the self-made light source is used for detecting the surface quality defect of the.
The image acquisition module 004 comprises a CCD camera and a lens, the CCD camera is an MV-EM200C black-and-white surface scanning camera, the highest resolution of the MV-EM200C black-and-white surface scanning camera is 1600 x 1200, the data volume acquired by the black-and-white camera is less than that of a color picture, the subsequent processing of a subsequent computer 005 on the picture is facilitated, under the condition that the acquisition field of view is not changed, the higher the resolution is, the higher the capability of distinguishing the bright and dark details of the picture is, and the detection precision requirement of the visual detection system is greatly met, the lens adopts a fixed focus lens, the fixed focus lens is AFT-0614MP, the focal length is 6mm, the light is conveniently gathered, the field of view is controlled, and the overall performance of the visual.
The models of the first servo motor 2 and the second servo motor 12 are RGH22X models, the precision can reach 0.001mm, the stepping motor 14 is a binomial equation, the stepping angle is 1.8 degrees, the precision is 0.03 degrees, the precision is extremely high, errors are not easy to occur in the detection process, and the condition of missing detection is not easy to occur.
Referring to fig. 3, a GigE ethernet is connected between the image acquisition module 004 and the computer 005, and is used for rapidly transmitting the image data acquired by the image acquisition module 004 to the computer 005 in real time for image processing and analysis.
The CCD camera is connected with a data acquisition board card, the type of the data acquisition board card is PCI1711, and the data acquisition board card is used for acquiring data acquired by the CCD camera in real time.
The mechanical transmission module 003 further comprises a motion control board card, the model of the motion control board card is MPC08, the motion control board card is connected with the first servo motor 2, the second servo motor 12 and the stepping motor 14, the motion of the first servo motor 2, the second servo motor 12 and the stepping motor 14 is intelligently controlled, and the control precision is high.
During the use, the technician will wait to detect the rubber ring and arrange in on second lead screw 11, it is rotatory to drive first lead screw 19 through shaft coupling 3 after first servo motor 2 starts, make first slider 4 be linear motion along first smooth guide rail 5, second servo motor 12 starts and rotates through driving second lead screw 11, make second slider 9 be linear motion along the smooth guide rail 10 of second, and then drive second support 13 synchronous motion through second connecting block 8, step motor 14 starts to drive rotatory transmission shaft and rotates, and then drive glass objective table 18 and rotate, realize two-way movement and rotation on the horizontal plane, two-way movement on the horizontal plane is used for detecting the size defect of rubber ring, rotary motion is used for the surface quality defect of comprehensive detection rubber ring.
In the process of measuring the size of the rubber ring, a CCD camera is used for collecting 6 edge images, corresponding 6 groups of position coordinates are recorded through a grating ruler, then image preprocessing, image threshold segmentation and edge extraction are carried out, then the edge coordinates are calculated, finally a least square method is used for fitting a circle, the radius is calculated, the calculation result is compared with the set radius, and whether the rubber ring is qualified or not is judged.
In the process of detecting the surface quality of the rubber ring, a CCD camera fixing mode is adopted, all images are collected in a rotating mode of the rubber ring to be detected, the central angle of the collected image is 30 degrees every time, 12 images are collected in a single-side 360-degree rotating mode, then each image is processed respectively, the rubber ring can be judged to be unqualified as long as one image is defective, the image processing process sequentially comprises image filtering denoising, image segmentation, morphological processing, defect marking and defect identification, intelligent system detection of the O-shaped rubber ring by introducing a machine vision system can be achieved, the detection mode is comprehensive, the size and the surface quality defects of the rubber ring can be detected simultaneously, the detection efficiency and the detection precision are improved remarkably, artificial errors can be ignored almost, the stability of detection data is high, and the situations of false detection and missing detection are avoided.
The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.

Claims (8)

1. The utility model provides an intelligence rubber circle check out test set, includes detecting system (001) and equipment platform, its characterized in that: the detection system (001) comprises a light source module (002), a mechanical transmission module (003), an image acquisition module (004) and a computer (005), the mechanical transmission module (003) comprises a first servo motor (2), a second servo motor (12) and a stepping motor (14), the equipment platform comprises a first support (1), the first support (1) is connected with the first servo motor (2), the output end of the first servo motor (2) is connected with a coupler (3), the coupler (3) is connected with a first lead screw (19), a first sliding block (4) is in threaded connection with the first lead screw (19), a first smooth guide rail (5) is fixedly connected with the inner end of the first support (1), a first sliding hole matched with the first smooth guide rail (5) is formed in the first sliding block (4), and the first sliding block (4) is in sliding connection with the first smooth guide rail (5), the upper end of the first sliding block (4) is fixedly connected with a first connecting block (6), the upper end of the first connecting block (6) is fixedly connected with a bottom plate (7), the upper end of the bottom plate (7) is fixedly connected with a second connecting block (8), the output end of a second servo motor (12) is connected with a second lead screw (11), the second lead screw (11) is in threaded connection with a second sliding block (9), the inner end of the bottom plate (7) is fixedly connected with a second smooth guide rail (10), the second smooth guide rail (10) is perpendicular to the first smooth guide rail (5), the second sliding block (9) is provided with a second sliding hole matched with the second smooth guide rail (10), the second sliding block (9) is in sliding connection with the second smooth guide rail (10), the upper end of the bottom plate (7) is fixedly connected with a second bracket (13), and the second bracket (13) is connected with the second servo motor (12), the output of step motor (14) is connected with rotatory transmission shaft, and rotatory transmission shaft is located second support (13), second support (13) upper end fixedly connected with mounting panel (15), and mounting panel (15) are connected with step motor (14), mounting panel (15) upper end fixedly connected with light source fixed plate (16), light source fixed plate (16) upper end is connected with annular LED light source (17), annular LED light source (17) upper end is connected with glass objective table (18), and fixed connection between glass objective table (18) lower extreme and the rotatory transmission shaft, glass objective table (18) upper end fixedly connected with spacing ring (20).
2. The intelligent rubber ring detection device of claim 1, wherein: the light source module (002) comprises a PC, a MAX232, a single chip microcomputer, a comparator CD4585, an LED drive circuit and an LED light source, wherein the LED light source comprises a surface light source and a self-made light source.
3. The intelligent rubber ring detection device of claim 1, wherein: the image acquisition module (004) comprises a CCD camera and a lens, the CCD camera is an MV-EM200C black-and-white surface scanning camera, and the highest resolution of the MV-EM200C black-and-white surface scanning camera is 1600 x 1200.
4. The intelligent rubber ring detection device as claimed in claim 1 or 3, wherein: the lens adopts a fixed focal length lens, the model of the fixed focal length lens is AFT-0614MP, and the focal length is 6 mm.
5. The intelligent rubber ring detection device of claim 1, wherein: the first servo motor (2) and the second servo motor (12) are both of RGH22X type, the precision can reach 0.001mm, the stepping motor (14) is of a binomial form, the stepping angle is 1.8 degrees, and the precision is 0.03 degrees.
6. The intelligent rubber ring detection device of claim 1, wherein: and a GigE Ethernet is connected between the image acquisition module (004) and the computer (005).
7. The intelligent rubber ring detection device of claim 1, wherein: the CCD camera is connected with a data acquisition board card, and the model of the data acquisition board card is PCI 1711.
8. The intelligent rubber ring detection device of claim 1, wherein: the mechanical transmission module (003) further comprises a motion control board card, the model of the motion control board card is MPC08, and the motion control board card is connected with the first servo motor (2), the second servo motor (12) and the stepping motor (14).
CN201811533725.1A 2018-12-14 2018-12-14 Intelligent rubber ring detection equipment Withdrawn CN111323421A (en)

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