CN109489571A - A kind of auto parts processing diameter On-Line Control Method - Google Patents
A kind of auto parts processing diameter On-Line Control Method Download PDFInfo
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- CN109489571A CN109489571A CN201811213156.2A CN201811213156A CN109489571A CN 109489571 A CN109489571 A CN 109489571A CN 201811213156 A CN201811213156 A CN 201811213156A CN 109489571 A CN109489571 A CN 109489571A
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- size
- midpoint
- anchor point
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/08—Measuring arrangements characterised by the use of optical techniques for measuring diameters
- G01B11/10—Measuring arrangements characterised by the use of optical techniques for measuring diameters of objects while moving
- G01B11/105—Measuring arrangements characterised by the use of optical techniques for measuring diameters of objects while moving using photoelectric detection means
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention discloses a kind of auto parts to process diameter On-Line Control Method, characterized by the following steps: 1) according to the required precision of part, production meets the standardized element of required precision, standardized element is upright to be fixed in transmission belt, standardized element is at the uniform velocity transmitted through the lower part of video camera by transmission belt, and video camera carries out Image Acquisition to standardized element；2) image of image processing system processing acquisition, the end face figure like of extraction standard part, end face figure like are ellipse, obtain first nodal point and the second central point；3) check whether the first midpoint is overlapped with the second midpoint；4) size factor is calculated according to part image size and standardized element size；5) part to be measured is obtained the picture size of part to be measured by step 1), step 2, step 3), calculates measuring size for part to be measured according to the picture size of size factor and part to be measured.The present invention can greatly improve measurement accuracy.
Description
Technical field
The invention belongs to part by numerical control processing technique fields, and in particular to a kind of auto parts processing diameter On-line Control side
Method.
Background technique
Circular shaft part is the important component of machinery equipment field, and circular shaft part is generally adopted in the Precision Machining stage
With accurate cylindrical grinder to obtain good surface quality and dimensional accuracy.In order to inhibit grinding wheel loss, lathe bed expand with heat and contract with cold, into
Influence to non-ideal factors such as deviations to diameter of part generallys use on-line measurement device control part in accurate cylindrical grinder
Diameter parameters, thus realize diameter of part real-time closed-loop control.
Summary of the invention
It is an object of the invention to overcome above-mentioned the deficiencies in the prior art, a kind of auto parts processing diameter is provided in line traffic control
Method processed.
The present invention is achieved by the following technical solutions:
A kind of auto parts processing diameter On-Line Control Method, it is characterised in that the following steps are included:
1) according to the required precision of part, production meets the standardized element of required precision, standardized element it is upright be fixed on transmission
It takes, standardized element is at the uniform velocity transmitted through the lower part of video camera by transmission belt, and video camera carries out Image Acquisition to standardized element；
2) image of image processing system processing acquisition, the end face figure like of extraction standard part, end face figure like is ellipse, with ellipse
The central point of circular image is pre- mass center, anchor point is arbitrarily taken at the edge of oval image, between comparison and location point and mass center
Spacing, find out first anchor point farthest apart from pre- mass center, find out second anchor point nearest apart from pre- mass center, the first positioning
Line and extending between point and pre- mass center, the intersection point between extended line and the edge of oval image is third anchor point, first
The midpoint of anchor point and third anchor point connecting line is the first midpoint, line and extends between the second anchor point and pre- mass center, prolongs
Intersection point between long line and the edge of oval image is the 4th anchor point, in the second anchor point and the 4th anchor point connecting line
Point is the second midpoint；
3) check whether the first midpoint is overlapped with the second midpoint, if being overlapped, the first anchor point and third anchor point are part drawing
As size, if not being overlapped, using the first midpoint and the midpoint of the second midpoint connecting line as pre- particle, step 2, Zhi Dao are repeated
One midpoint is overlapped with the second midpoint；
4) size factor is calculated according to part image size and standardized element size；
5) part to be measured is obtained the picture size of part to be measured by step 1), step 2, step 3), according to size factor and to be measured
The picture size of part calculates measuring size for part to be measured.
Preferably, video camera is CCD camera in the step 1).
Preferably, size factor=standardized element size/part image size in the step 4).
Preferably, that part is surveyed in the step 5) measures size=size factor × part to be measured picture size.
Compared with prior art, the beneficial effects of the present invention are:
The present invention is by demarcating standardized element size to the error value of computing system, so that the diameter of accurate part carries out
On-line checking, when renewal part, it is only necessary to primary calibration is done, to greatly improve measurement accuracy.
Specific embodiment
A kind of auto parts processing diameter On-Line Control Method, it is characterised in that the following steps are included:
1) according to the required precision of part, production meets the standardized element of required precision, standardized element it is upright be fixed on transmission
It takes, standardized element is at the uniform velocity transmitted through the lower part of video camera by transmission belt, and video camera carries out Image Acquisition to standardized element；
2) image of image processing system processing acquisition, the end face figure like of extraction standard part, end face figure like is ellipse, with ellipse
The central point of circular image is pre- mass center, anchor point is arbitrarily taken at the edge of oval image, between comparison and location point and mass center
Spacing, find out first anchor point farthest apart from pre- mass center, find out second anchor point nearest apart from pre- mass center, the first positioning
Line and extending between point and pre- mass center, the intersection point between extended line and the edge of oval image is third anchor point, first
The midpoint of anchor point and third anchor point connecting line is the first midpoint, line and extends between the second anchor point and pre- mass center, prolongs
Intersection point between long line and the edge of oval image is the 4th anchor point, in the second anchor point and the 4th anchor point connecting line
Point is the second midpoint；
3) check whether the first midpoint is overlapped with the second midpoint, if being overlapped, the first anchor point and third anchor point are part drawing
As size, if not being overlapped, using the first midpoint and the midpoint of the second midpoint connecting line as pre- particle, step 2, Zhi Dao are repeated
One midpoint is overlapped with the second midpoint；
4) size factor is calculated according to part image size and standardized element size；
5) part to be measured is obtained the picture size of part to be measured by step 1), step 2, step 3), according to size factor and to be measured
The picture size of part calculates measuring size for part to be measured.
Video camera is CCD camera in the step 1).
Size factor=standardized element size/part image size in the step 4).
That part is surveyed in the step 5) measures size=size factor × part to be measured picture size.
Claims (4)
1. a kind of auto parts process diameter On-Line Control Method, it is characterised in that the following steps are included:
1) according to the required precision of part, production meets the standardized element of required precision, standardized element it is upright be fixed on transmission
It takes, standardized element is at the uniform velocity transmitted through the lower part of video camera by transmission belt, and video camera carries out Image Acquisition to standardized element；
2) image of image processing system processing acquisition, the end face figure like of extraction standard part, end face figure like is ellipse, with ellipse
The central point of circular image is pre- mass center, anchor point is arbitrarily taken at the edge of oval image, between comparison and location point and mass center
Spacing, find out first anchor point farthest apart from pre- mass center, find out second anchor point nearest apart from pre- mass center, the first positioning
Line and extending between point and pre- mass center, the intersection point between extended line and the edge of oval image is third anchor point, first
The midpoint of anchor point and third anchor point connecting line is the first midpoint, line and extends between the second anchor point and pre- mass center, prolongs
Intersection point between long line and the edge of oval image is the 4th anchor point, in the second anchor point and the 4th anchor point connecting line
Point is the second midpoint；
3) check whether the first midpoint is overlapped with the second midpoint, if being overlapped, the first anchor point and third anchor point are part drawing
As size, if not being overlapped, using the first midpoint and the midpoint of the second midpoint connecting line as pre- particle, step 2, Zhi Dao are repeated
One midpoint is overlapped with the second midpoint；
4) size factor is calculated according to part image size and standardized element size；
5) part to be measured is obtained the picture size of part to be measured by step 1), step 2, step 3), according to size factor and to be measured
The picture size of part calculates measuring size for part to be measured.
2. a kind of auto parts as described in claim 1 process diameter On-Line Control Method, it is characterised in that: the step 1)
Middle video camera is CCD camera.
3. a kind of auto parts as described in claim 1 process diameter On-Line Control Method, it is characterised in that: the step 4)
Middle size factor=standardized element size/part image size.
4. a kind of auto parts as described in claim 1 process diameter On-Line Control Method, it is characterised in that: the step 5)
Middle survey part measures size=size factor × part to be measured picture size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811213156.2A CN109489571A (en) | 2018-10-18 | 2018-10-18 | A kind of auto parts processing diameter On-Line Control Method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811213156.2A CN109489571A (en) | 2018-10-18 | 2018-10-18 | A kind of auto parts processing diameter On-Line Control Method |
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| Publication Number | Publication Date |
|---|---|
| CN109489571A true CN109489571A (en) | 2019-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811213156.2A Pending CN109489571A (en) | 2018-10-18 | 2018-10-18 | A kind of auto parts processing diameter On-Line Control Method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000186915A (en) * | 1998-12-21 | 2000-07-04 | Yuki Gijutsu Sogo:Kk | Visual inspection method and visual inspection device in tablet blister package line |
| CN101532826A (en) * | 2008-03-12 | 2009-09-16 | 财团法人金属工业研究发展中心 | Non-contact optical measurement method of workpiece profile |
| CN102116610A (en) * | 2010-11-29 | 2011-07-06 | 科达斯特恩(常州)汽车塑件系统有限公司 | Automatic on-line detection method and device for size of automobile parts based on machine vision |
| CN106091934A (en) * | 2016-08-31 | 2016-11-09 | 魏志丽 | Axial workpiece machine vision size detecting system |
-
2018
- 2018-10-18 CN CN201811213156.2A patent/CN109489571A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000186915A (en) * | 1998-12-21 | 2000-07-04 | Yuki Gijutsu Sogo:Kk | Visual inspection method and visual inspection device in tablet blister package line |
| CN101532826A (en) * | 2008-03-12 | 2009-09-16 | 财团法人金属工业研究发展中心 | Non-contact optical measurement method of workpiece profile |
| CN102116610A (en) * | 2010-11-29 | 2011-07-06 | 科达斯特恩(常州)汽车塑件系统有限公司 | Automatic on-line detection method and device for size of automobile parts based on machine vision |
| CN106091934A (en) * | 2016-08-31 | 2016-11-09 | 魏志丽 | Axial workpiece machine vision size detecting system |
Non-Patent Citations (2)
| Title |
|---|
| 刘霞: "工业零件形状尺寸的机器视觉检测系统的研究", 《中国优秀硕士学位论文全文数据库 信息科技辑》 * |
| 林晓峰等: "CCD摄像法在工件尺寸测量中的应用", 《光学仪器》 * |
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Application publication date: 20190319 |