CN102128595B - Detection method and device for dimension parameters of carving tool - Google Patents
Detection method and device for dimension parameters of carving tool Download PDFInfo
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- CN102128595B CN102128595B CN 200910215645 CN200910215645A CN102128595B CN 102128595 B CN102128595 B CN 102128595B CN 200910215645 CN200910215645 CN 200910215645 CN 200910215645 A CN200910215645 A CN 200910215645A CN 102128595 B CN102128595 B CN 102128595B
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- 238000001514 detection method Methods 0.000 title claims abstract description 32
- 238000012545 processing Methods 0.000 claims abstract description 12
- 235000021167 banquet Nutrition 0.000 claims description 18
- 238000006467 substitution reaction Methods 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 238000005259 measurement Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
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- 238000011160 research Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
The invention relates to a detection method and device for the dimension parameters of a carving tool. An image acquisition device acquires the front image and back image of the carving tool to be detected; the acquired images are transferred to an image processing device which performs binarization processing on the images; by superimposing the pixels of the front image and back image of the carving tool to be detected after binarization, a superimposed image of the carving tool to be detected can be obtained; by measuring and calculating the coordinate values of the end points of the superimposed image, the data such as line width, oblique angle and the like of the carving tool to be detected can be detected; and a detection method and a detection device capable of realizing quick detection and improving the detection precision are provided.
Description
Technical field
The present invention relates to a kind of automatic testing method and device, refer to a kind of in order to detect detection method and the device person of engraving cutter dimensional parameters especially.
Background technology
Press, at present for the size detection of carving cutter, though can detect through artificial (manual, visual) or mechanical type, but aforesaid detection mode not only causes the error in the detection easily, and can limit to some extent for the check speed of product relatively, and then allow the product can't quick and efficient detection, and can improve relatively and detect required manpower and cost, in addition improvements are really arranged.
Summary of the invention
Therefore, the inventor is not because there be special automated detection method and the device of engraving with the cutter exploitation that be at present, thereby can't provide deficiency and the problem of the quantized data of engraving cutter processing machine round-off error, special through continuous research and experiment, develop the present invention who the existing disappearance of a kind of energy improvement finally.
Fundamental purpose of the present invention is to be to provide a kind of detection method and device thereof of carving the cutter dimensional parameters, and it is automatically to detect for the dimensional parameters of carving cutter, but and then the purpose person who a fast detecting is provided and improves accuracy of detection.
For achieving the above object, the present invention provides a kind of detection method of carving the cutter dimensional parameters, and its operating process is to include:
One pick-up unit is provided: this pick-up unit is to be provided with a base, to be located at video capture device and the image processor that is connected with clamp tool and image device acquisition device that clamp tool, on the base is located at the base top movably, wherein engraving cutter to be measured is arranged on this clamp tool, and sees through the image that video capture device captures engraving cutter to be measured;
Carry out image processing and measurement: see through front image and back side image that video capture device captures engraving cutter to be measured, institute's picked image is sent in the image processor, carry out the binary conversion treatment of image via image processor, will be through the front of the engraving cutter to be measured of binaryzation and the pixel stack of back side image, can obtain an overlapping engraving cutter image to be measured, the coordinate figure that carries out end points for superimposed image measures and computing, can detect the data at the live width of engraving cutter to be measured and oblique angle etc.; And
Automatically detect start: see through image processor and transmit the mode of signal for clamp tool, and make clamp tool and engraving cutter to be measured base and video capture device generation start relatively, use the profile at each position of acquisition engraving cutter to be measured.
Further, this image binary conversion treatment is that the pixel in institute's picked image is divided into two groups, distinguishes object and background with grey scale critical value, to reach the purpose that image is cut apart, utilizes a histogram to try to achieve critical value (T
0), and with critical value (T
0) be benchmark with the image binaryzation, wherein in the image GTG value of pixel greater than critical value (T
0), then the GTG value of this point becomes 255, otherwise, when the GTG value of image less than critical value (T
0), then the GTG value becomes 0.
Further again, from superimposed image, measure the two-end-point coordinate figure A (x of engraving cutter to be measured, y) with B (x, y), among data substitution equation L=A (y)+B (y) with two coordinate points, can calculate the live width of engraving cutter to be measured, A (y) the y coordinate points of ordering for image A wherein, the y coordinate points that B (y) is ordered for image B.
Preferably, measure the hypotenuse profile coordinate that engraving cutter A to be measured is ordered, with the profile equation of line y of each coordinate figure substitution of hypotenuse engraving cutter to be measured
1(x)=m
1X+c
1In, can obtain the slope value of the profile equation of line of engraving cutter to be measured, wherein y
1(x) be the y coordinate points of engraving cutter profile equation of line to be measured, m
1Be the slope of engraving cutter profile equation of line to be measured, and c
1Be the constant of engraving cutter profile equation of line to be measured, but and the oblique angle of this engraving cutter to be measured is substitution formula θ=tan
-1(m
1) try to achieve.
The present invention provides a kind of pick-up unit of carving the cutter dimensional parameters in addition, and it is to include a clamping device, a video capture device and an image processor, wherein:
This clamping device is provided with a base and a clamp tool, and this clamp tool is to be located on the base slidably and to be provided with a mobile platform and anchor clamps, and wherein this mobile platform is to be located on the base top surface movably, and these anchor clamps combine with mobile platform;
This video capture device is located at base top and is provided with a backlight, and wherein this backlight is located on the base top surface and is faced mutually with video capture device, makes engraving cutter to be measured between video capture device and backlight; And
This image processor is connected with video capture device and clamping device and is provided with a computing machine, this computing machine is provided with an image processing program and a detection calculations program, use the engraving cutter image to be measured that captures for video capture device and carry out binaryzation and overlapping processing, and then calculate live width and the oblique angle data of engraving cutter to be measured.
Further, these anchor clamps combine with mobile platform and be provided with a connecting support, one the folder choose a place to give a banquet and a correcting plate, wherein this connecting support combines with mobile platform, this folder is chosen a place to give a banquet to combine and laterally be penetrated with one with connecting support and is worn groove, and folder seat vertically be penetrated with between end face and bottom surface one with wear the guide groove that groove is connected, this correcting plate be located at movably press from both sides in the guide groove choose a place to give a banquet and laterally run through be provided with one with wear that groove communicates and control the guiding groove of engraving cutter to be measured in order to folder.
Further again, this connecting support is provided with a combined block and a positioning rod, wherein this combined block combines with the mobile platform end face and is provided with two connecting links that laterally be arranged in parallel, and this backstay is to combine with combined block and between two connecting links and be arranged with an elastic parts, and the side that this folder is chosen a place to give a banquet combines with two connecting links, and this backstay is to be stretched to wear in the groove.
Preferably, this video capture device is that (Charge-Coupled Device CCD), uses the image of acquisition engraving cutter to be measured to a digital camera
Preferably, the groove of wearing that this folder is chosen a place to give a banquet is a slightly V-shaped structure.
By above-mentioned technological means, the present invention carves detection method and the device thereof of cutter dimensional parameters, mainly be to see through clamping device engraving cutter to be measured is arranged between video capture device and the backlight, wherein can pass through the connecting support backstay, effect between the guiding groove of wearing groove and correcting plate that folder is chosen a place to give a banquet, firmly be located on the clamp tool surely engraving cutter to be measured, can carry out the acquisition of front and back side image for engraving cutter to be measured via video capture device, after institute's picked image sees through image processor binaryzation and overlapping processing, can measure and calculate live width and the bevel angle value of engraving cutter to be measured accurately and quickly, but and then the detection method and the device person that a fast detecting are provided and improve accuracy of detection.
Description of drawings
Fig. 1 is the operational block synoptic diagram of the present invention's detection method of carving the cutter dimensional parameters.
Fig. 2 is the schematic side view of pick-up unit of the present invention.
Fig. 3 is the detection synoptic diagram of the present invention's engraving cutter to be measured.
Fig. 4 is the synoptic diagram of image binary conversion treatment of the present invention.
Fig. 5 is the synoptic diagram that image overlap of the present invention is handled.
Fig. 6 is the dimensional parameters synoptic diagram of the present invention's engraving cutter to be measured.
Fig. 7 is the stereoscopic synoptic diagram of anchor clamps of the present invention.
Symbol description
(10) clamping device
(11) base (12) clamp tool
(13) mobile platform (14) anchor clamps
(15) connecting support
(151) combined block (152) backstay
(153) connecting link (154) elastic parts
(16) folder is chosen a place to give a banquet
(161) wear groove (162) guide groove
(17) correcting plate (171) guiding groove
(20) video capture device (21) backlight
(30) image processor (31) computing machine
(40) engraving cutter to be measured
Embodiment
Be energy detail knowledge technical characterictic of the present invention and practical effect, and can implement according to the content of instructions, now further with the preferred embodiment shown in graphic (as shown in Figures 1 and 2), describe in detail as the back:
The present invention sees through digitized video to handle and the image measurement mode, and detection method and the device thereof of an engraving cutter dimensional parameters are provided, and wherein is somebody's turn to do the detection method of engraving cutter dimensional parameters, and its operating process is to include:
A, provide a pick-up unit: this pick-up unit is to be provided with a base (11), to be located at video capture device (20) and the image processor (30) that is connected with clamp tool (12) and image device acquisition device (20) that clamp tool (12), on the base (11) is located at base (11) top movably, wherein engraving cutter (40) to be measured is arranged on this clamp tool (12), and sees through the image of video capture device (20) acquisition engraving cutter to be measured (40);
B, carry out image processing and measurement: see through video capture device as shown in Figure 3 and pick front image and the back side image that (20) get engraving cutter to be measured (40), institute's picked image is sent in the image processor, carry out the binary conversion treatment of image via image processor, wherein binaryzation (thresholding) is handled and is called the critical value processing again, its be for image cut apart in one of most important method, the first step before image is analyzed is to carry out image to cut apart, mainly be as shown in Figure 4 the pixel in the image to be divided into two groups, distinguish object and background with grey scale critical value, to reach the purpose that image is cut apart, utilize a histogram can try to achieve critical value (T
0), and with critical value (T
0) be benchmark with the image binaryzation, wherein in the image GTG value of pixel greater than critical value (T
0) person, then the GTG value of this point becomes 255, otherwise, when the GTG value of image less than critical value (T
0) person, then the GTG value becomes 0, and the mode of this image binary conversion treatment is to try to achieve according to equation (1):
As shown in Figure 5 will be through the front of the engraving cutter to be measured (40) of binaryzation and the pixel stack of back side image, can obtain as shown in Figure 6 overlapping engraving cutter to be measured (a 40) image, wherein from superimposed image, measure the two-end-point coordinate figure A (x of engraving cutter to be measured (40), y) with B (x, y), in the data substitution equation (2) with two coordinate points, can calculate the live width (L) of engraving cutter to be measured (40):
L＝A(y)+B(y) (2)
A (y) the y coordinate points of ordering for image A wherein, the y coordinate points that B (y) is ordered for image B;
By measuring the hypotenuse profile coordinate that engraving cutter to be measured (40) A is ordered, in the profile equation of line (3) with hypotenuse each coordinate figure substitution engraving cutter to be measured (40), can obtain the slope value of the profile equation of line of engraving cutter to be measured (40) again:
y
1(x)＝m
1x+c
1 (3)
Y wherein
1(x) be the y coordinate points of engraving cutter to be measured (40) profile equation of line, m
1Be the slope of engraving cutter to be measured (40) profile equation of line, and c
1Constant for engraving cutter to be measured (40) profile equation of line;
The oblique angle (θ) of this engraving cutter to be measured (40) but be substitution formula (4) and trying to achieve:
θ＝tan
-1(m
1) (4)
See through above-mentioned measurement and computing, can detect the data of the live width (L) of engraving cutter to be measured (40) and oblique angle (θ) etc.; And
C, detect start automatically: see through image processor (30) and control the mode that (12) tool transmits signal for folder, and make clamp tool (12) and engraving cutter to be measured (40) base (11) and video capture device (20) generation start relatively, use the profile at each position of acquisition engraving cutter to be measured (40).
Please cooperate referring to shown in second and seven figure, the pick-up unit that the present invention carves the cutter dimensional parameters is to be provided with a clamping device (10), a video capture device (20) and an image processor (30), wherein:
This pick-up unit (10) is to be provided with a base (11) and a clamp tool (12), wherein this clamp tool (12) is to be located at base (11) slidably to go up and be provided with a mobile platform (13) and anchor clamps (14), wherein this mobile platform (13) is to be located at movably on base (11) end face, and these anchor clamps (14) are to combine with mobile platform (13) and be provided with a connecting support (15), one folder is chosen a place to give a banquet (16) and a correcting plate (17), wherein this connecting support (15) is to combine with mobile platform (13), preferably, this connecting support (15) is to be provided with a combined block (151) and a positioning rod (152), wherein this combined block (151) is to combine with mobile platform (13) end face and be provided with two connecting links that laterally be arranged in parallel (153), and this backstay (151) is to combine with combined block (151) and be positioned between two connecting links (153) and be arranged with an elastic parts (154);
This folder choose a place to give a banquet (16) be to combine with connecting support (15) and laterally be penetrated with a slightly V-shaped groove (161) of wearing, wherein the choose a place to give a banquet side of (16) of this folder is to combine with two connecting links (153), and this backstay (152) is to be stretched to wear in the groove (161), in addition folder choose a place to give a banquet (16) between end face and bottom surface be vertically be penetrated with one with wear the guide groove (162) that groove (161) is connected, this correcting plate (17) be located in the guide groove (162) that presss from both sides choose a place to give a banquet (16) movably and laterally run through be provided with one with wear that groove (161) communicates and control the guiding groove (171) of engraving cutter to be measured (40) in order to folder;
This video capture device (20) is to be located at base (11) top and to be provided with a backlight (21), wherein this backlight (21) is to be located on base (11) end face and to face mutually with video capture device (20), engraving cutter to be measured (40) is positioned between video capture device (20) and the backlight (21), preferably, this video capture device (20) is to be a digital camera (Charge-Coupled Device, CCD), use the image of acquisition engraving cutter to be measured (40); And
This image processor (30) is to be connected with video capture device (20) and clamping device (10) and to be provided with a computing machine (31), this computing machine (31) is provided with an image processing program and a detection calculations program, use engraving cutter to be measured (40) image that captures for video capture device (20) and carry out binaryzation and overlapping processing, and then calculate live width and the oblique angle data of engraving cutter to be measured (40).
By above-mentioned technological means, the present invention carves detection method and the device thereof of cutter dimensional parameters, mainly be to see through clamping device (10) engraving cutter (40) to be measured is arranged between video capture device (20) and the backlight (21), wherein can pass through connecting support (15) backstay (152), the folder effect between the guiding groove (171) of wearing groove (161) and correcting plate (17) of (16) of choosing a place to give a banquet, engraving cutter (40) to be measured firmly is located on the clamp tool (12) surely, can carry out the acquisition of front and back side image for engraving cutter to be measured (40) via video capture device (20), after institute's picked image sees through image processor (30) binaryzation and overlapping processing, can measure and calculate live width and the bevel angle value of engraving cutter to be measured (40) accurately and quickly, but and then the detection method and the device person that a fast detecting are provided and improve accuracy of detection.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, have in the technical field under any and know the knowledgeable usually, if in the scope that does not break away from technical scheme that the present invention puies forward, utilize disclosed technology contents to do the local equivalent embodiment that changes or modify, and do not break away from technical scheme content of the present invention, all still belong in the scope of technical solution of the present invention.
Claims (7)
1. a detection method of carving the cutter dimensional parameters is characterized in that, comprises:
One pick-up unit is provided: this pick-up unit is to be provided with a base, to be located at video capture device and the image processor that is connected with clamp tool and video capture device that clamp tool, on the base is located at the base top movably, wherein engraving cutter to be measured is arranged on this clamp tool, and sees through the image that video capture device captures engraving cutter to be measured;
Carry out image processing and measurement: see through front image and back side image that video capture device captures engraving cutter to be measured, institute's picked image is sent in the image processor, carry out the binary conversion treatment of image via image processor, will be through the front of the engraving cutter to be measured of binaryzation and the pixel stack of back side image, can obtain an overlapping engraving cutter image to be measured, the coordinate figure that carries out end points for superimposed image measures and computing, can detect the live width of engraving cutter to be measured and the data at oblique angle; From superimposed image, measure the two-end-point coordinate figure A (x of engraving cutter to be measured, y) with B (x, y), among data substitution equation L=A (y)+B (y) with two coordinate points, can calculate the live width of engraving cutter to be measured, A (y) the y coordinate points of ordering for image A wherein, the y coordinate points that B (y) is ordered for image B, and
Automatically detect start: see through image processor and transmit the mode of signal for clamp tool, and make clamp tool and engraving cutter to be measured base and video capture device generation start relatively, use the profile at each position of acquisition engraving cutter to be measured.
2. the detection method of engraving cutter dimensional parameters according to claim 1, it is characterized in that, this image binary conversion treatment is that the pixel in institute's picked image is divided into two groups, distinguish object and background with grey scale critical value, to reach the purpose that image is cut apart, utilize a histogram to try to achieve critical value (T
0), and with critical value (T
0) be benchmark with the image binaryzation, wherein in the image GTG value of pixel greater than critical value (T
0), then the GTG value of this point becomes 255, otherwise, when the GTG value of image less than critical value (T
0), then the GTG value becomes 0.
3. the detection method of engraving cutter dimensional parameters according to claim 1 and 2 is characterized in that, measures the hypotenuse profile coordinate that engraving cutter A to be measured is ordered, with the profile equation of line y of each coordinate figure substitution of hypotenuse engraving cutter to be measured
1(x)=m
1X+c
1In, can obtain the slope value of the profile equation of line of engraving cutter to be measured, wherein y
1(x) be the y coordinate points of engraving cutter profile equation of line to be measured, m
1Be the slope of engraving cutter profile equation of line to be measured, and c
1Be the constant of engraving cutter profile equation of line to be measured, but and the oblique angle of this engraving cutter to be measured is substitution formula θ=tan
-1(m
1) try to achieve.
4. a pick-up unit of carving the cutter dimensional parameters is characterized in that, includes a clamping device, a video capture device and an image processor, wherein:
This clamping device is provided with a base and a clamp tool, and this clamp tool is to be located on the base slidably and to be provided with a mobile platform and anchor clamps, and wherein this mobile platform is to be located on the base top surface movably, and these anchor clamps combine with mobile platform;
This video capture device is located at base top and is provided with a backlight, and wherein this backlight is located on the base top surface and is faced mutually with video capture device, makes engraving cutter to be measured between video capture device and backlight; And
This image processor is connected with video capture device and clamping device and is provided with a computing machine, this computing machine is provided with an image processing program and a detection calculations program, use the engraving cutter image to be measured that captures for video capture device and carry out binaryzation and overlapping processing, and then calculate live width and the oblique angle data of engraving cutter to be measured;
These anchor clamps are provided with a connecting support, a folder is chosen a place to give a banquet and a correcting plate, wherein this connecting support combines with mobile platform, this folder is chosen a place to give a banquet to combine and laterally be penetrated with one with connecting support and is worn groove, and folder seat vertically be penetrated with between end face and bottom surface one with wear the guide groove that groove is connected, this correcting plate be located at movably press from both sides in the guide groove choose a place to give a banquet and laterally run through be provided with one with wear that groove communicates and control the guiding groove of engraving cutter to be measured in order to folder.
5. the pick-up unit of engraving cutter dimensional parameters according to claim 4, it is characterized in that, this connecting support is provided with a combined block and a positioning rod, wherein this combined block combines with the mobile platform end face and is provided with two connecting links that laterally be arranged in parallel, and this backstay combines with combined block and between two connecting links and be arranged with an elastic parts, and the side that this folder is chosen a place to give a banquet combines with two connecting links, and this backstay is to be stretched to wear in the groove.
6. according to the pick-up unit of claim 4 or 5 described engraving cutter dimensional parameters, it is characterized in that this video capture device is a digital camera, use the image of acquisition engraving cutter to be measured.
7. the pick-up unit of engraving cutter dimensional parameters according to claim 6 is characterized in that, this folder is chosen a place to give a banquet wears the structure that groove is V-arrangement.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910215645 CN102128595B (en) | 2009-12-30 | 2009-12-30 | Detection method and device for dimension parameters of carving tool |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910215645 CN102128595B (en) | 2009-12-30 | 2009-12-30 | Detection method and device for dimension parameters of carving tool |
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| CN102128595B true CN102128595B (en) | 2013-09-11 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878932A (en) * | 2012-10-25 | 2013-01-16 | 昆山允可精密工业技术有限公司 | Cutter measuring device |
| CN102927905A (en) * | 2012-10-25 | 2013-02-13 | 昆山允可精密工业技术有限公司 | Cutter measurement device |
| CN102927907A (en) * | 2012-10-25 | 2013-02-13 | 昆山允可精密工业技术有限公司 | Measuring device of tool |
| CN102927906A (en) * | 2012-10-25 | 2013-02-13 | 昆山允可精密工业技术有限公司 | Cutter measuring system |
| CN102927904A (en) * | 2012-10-25 | 2013-02-13 | 昆山允可精密工业技术有限公司 | Cutter measurement device |
| CN107121096B (en) * | 2017-03-30 | 2020-04-24 | 复旦大学 | Image-based spatial solid angle calculation method |
| CN110264511B (en) * | 2019-06-24 | 2020-02-07 | 北京市水产科学研究所（国家淡水渔业工程技术研究中心） | Parameter measurement method and system thereof |
| CN110480391A (en) * | 2019-08-21 | 2019-11-22 | 辽宁省交通高等专科学校 | A kind of automatic tool changer suitable for large complicated work pieces process and assembly |
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| EP1018633A2 (en) * | 1999-01-05 | 2000-07-12 | Natsteel Technology Investments PTE Ltd | Bar angle measurement system |
| CN2638920Y (en) * | 2003-08-06 | 2004-09-08 | 雷特国际股份有限公司 | Image detection device for processed article |
| EP1505544A2 (en) * | 2003-08-04 | 2005-02-09 | Mitutoyo Corporation | Methods and apparatus for inspection of lines embedded in highly textured material |
| CN1740740A (en) * | 2004-08-25 | 2006-03-01 | 杨明瞭 | Method for detecting size of assembly |
| TW200940242A (en) * | 2008-03-19 | 2009-10-01 | Univ Nat Formosa | Measurement system for inspecting slope angle and flat end dimension of carvers |
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|---|---|---|---|---|
| EP1018633A2 (en) * | 1999-01-05 | 2000-07-12 | Natsteel Technology Investments PTE Ltd | Bar angle measurement system |
| EP1505544A2 (en) * | 2003-08-04 | 2005-02-09 | Mitutoyo Corporation | Methods and apparatus for inspection of lines embedded in highly textured material |
| CN2638920Y (en) * | 2003-08-06 | 2004-09-08 | 雷特国际股份有限公司 | Image detection device for processed article |
| CN1740740A (en) * | 2004-08-25 | 2006-03-01 | 杨明瞭 | Method for detecting size of assembly |
| TW200940242A (en) * | 2008-03-19 | 2009-10-01 | Univ Nat Formosa | Measurement system for inspecting slope angle and flat end dimension of carvers |
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| CN102128595A (en) | 2011-07-20 |
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