CN106323980A - Small annular workpiece inner wall panoramic imaging apparatus and method - Google Patents
Small annular workpiece inner wall panoramic imaging apparatus and method Download PDFInfo
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- CN106323980A CN106323980A CN201510340417.7A CN201510340417A CN106323980A CN 106323980 A CN106323980 A CN 106323980A CN 201510340417 A CN201510340417 A CN 201510340417A CN 106323980 A CN106323980 A CN 106323980A
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- support
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- measurement
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- inwall
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Abstract
The invention relates to a small annular workpiece inner wall panoramic imaging apparatus and method. The apparatus comprises: a supporting rack, wherein the supporting rack comprises a supporting rod, a first support arranged on the supporting rod, a second support arranged on the supporting rod and a third support arranged on the supporting rod, the second support is arranged under the first support, and the third support is arranged under the second support; a camera fixing block arranged on the first support; a camera fixedly arranged on the camera fixing block; a shadowless lamp arranged on the second support; and a pedestal fixedly arranged under the supporting rack, wherein the pedestal is provided with an installing hole used for installing a conscope, and the supporting rack and the pedestal are fixedly arranged on a workbench. The conscope is put in a workpiece to be detected in order to form a complete image, so the complete panoramic image of the inner wall of the workpiece to be detected can be formed once.
Description
Technical field
The present invention relates to inwall panoramic imaging device and the method for annular work piece, relate to specifically
And the inwall panoramic imaging device of small, annular workpiece and method.
Background technology
Along with modern workpiece develops towards the direction of miniaturization, small, annular workpiece is in daily life
Produce have also been obtained in work, machine-building to be widely used.But small, annular work piece production mistake
Cheng Zhong, inevitably there is various defect in inwall, affects life-span and the performance of workpiece, very
Extremely affect the stability of subsequent forming system, the therefore internal face to this kind of small, annular workpiece
Detect more and more important.But, the internal diameter of some small, annular workpiece is less than 40mm, interior
Wall is not easily formed panoramic picture, brings difficulty to detection.
In existing technology, the method for detection small, annular workpiece inner wall whether existing defects
Have a lot.As utilized many mesh camera to carry out imaging, utilize rotation monocular camera or workpiece for measurement
Repeatedly imaging etc..Utilizing many mesh camera imaging, much the most relatively costly camera number is, and,
Due to single camera local tomography, follow-up also need utilizes image mosaic technology to enter topography
Row splicing, causes the reduction of precision and efficiency；Utilize and rotate monocular camera or work to be measured
Part imaging, needs rotary servo, and structure is complicated, it is impossible to disposable panoramic imagery, figure
Image distortion rate is higher, and imaging efficiency is low.
In the patent of Publication No. CN103673880A, disclose a kind of based on composite reflector
Micro hole inwall vision detection system, by composite reflector, intuitively obtain inwall figure
Picture.Although monocular camera imaging, but this method needs to rotate measured workpiece, it is impossible to
Disposable panoramic imagery.
In the patent of another Publication No. CN2187298Y, it is proposed that one utilizes sphere anti-
Penetrate the vision detection system of mirror, owing to camera and detecting system thereof are inside workpiece for measurement,
Therefore, it is only capable of the annular work piece inwall of larger interior diameter is detected, for internal diameter less than 40mm
Pipeline cannot be carried out detection.
Therefore, it is necessary to invent a kind of inwall method for panoramic imaging about small, annular workpiece
And device, to overcome above-mentioned the deficiencies in the prior art.
Summary of the invention
For background technology problem encountered, it is an object of the invention to provide a kind of small-sized
The inwall method for panoramic imaging of annular work piece and device.
For achieving the above object, the present invention is by the following technical solutions:
The inwall panoramic imaging device of a kind of small, annular workpiece, it is characterised in that including:
One bracing frame, support frame as described above includes a support bar, be arranged on described support bar one
One support, one second support being arranged on described support bar and be arranged on described support bar
One the 3rd support, described second support is positioned at the lower section of described first support, the described 3rd
Support is positioned at the lower section of described second support；One camera fixed block, is arranged at described first
On frame；One camera, is fixed on described camera fixed block；One shadowless lamp, is arranged at described
On second support；One base, is fixedly installed on below support frame as described above；One conscope, if
It is placed on described base.
In above-mentioned technical characteristic, described 3rd support is a clamping limb, to be measured for clamping one
Workpiece.
In above-mentioned technical characteristic, described workpiece for measurement is a small, annular workpiece.
In above-mentioned technical characteristic, described first support, described second support and described 3rd
Frame is all movably arranged on the axis direction of described support bar.
In above-mentioned technical characteristic, described shadowless lamp is movably arranged on the axle center of described second support
Direction.
In above-mentioned technical characteristic, described camera fixed block is movably arranged on described first support
Axis direction.
In above-mentioned technical characteristic, described camera is industrial camera, described camera and a computer
Being connected, described computer is used for processing and store described small, annular workpiece inner wall panorama sketch
Picture.
In above-mentioned technical characteristic, described base is provided with a mounting seat for fixing described conscope
Bottom.
The method that the inwall panoramic imaging device of a kind of above-mentioned small, annular workpiece carries out imaging,
It is characterized in that, comprise the steps of
Step one, according to workpiece for measurement size, be calculated as follows formula calculate described conscope
Tapering；
The horizontal width of the inwall of described workpiece for measurement imaging annulus on described conscope is
R, the internal bore radius of described workpiece for measurement is R, and the height of described workpiece for measurement is H, conscope
Tapering be α, cos α=r/ (2*H*sin α), i.e. r=H*sin2 α, when r < during R,
H*sin2 α≤R, the tapering α value of conscope changes according to the difference of R, H value, point
Following two situation:
As H≤R, H*sin2 α≤R perseverance is set up, and α is acute angle, when taking α=45 °, r=H
For maximum；
As H > R time, α=pi/2-1/2*arcsin (R/H), α are obtuse angle；Or α
=1/2*arcsin (R/H), α are acute angle；R=R is maximum；
And the conscope made by this result of calculation is installed in described base；
Step 2: support frame as described above is fixed on described base；
Step 3: workpiece for measurement is installed on described 3rd support, makes described workpiece for measurement
With described conscope coaxial line, adjusting described 3rd support, to make described conscope be deep into described
The inside of workpiece for measurement, and keep described workpiece for measurement and described conscope surface to have gap；
Step 4: described shadowless lamp is installed on described second support, by described shadowless lamp
It is adjusted to the surface of described workpiece for measurement, keeps described shadowless lamp same with described workpiece for measurement
Axis, opens described shadowless lamp；
Step 5: described camera is installed on described camera fixed block, described camera is solid
Determine block to be installed on described first support, described camera is adjusted to described workpiece for measurement and institute
State the surface of conscope, keep described camera and described workpiece for measurement coaxial line, open institute
State camera；
Step 6: regulate the focal length of described camera, and adjust the strong of described shadowless lamp light
Degree, the inwall panoramic imagery making described workpiece for measurement is clear, shoots and stores photo.
In above-mentioned technical characteristic, wherein in step one, as H≤R, take 45 °≤α≤50 °.
The present invention compared with prior art has the advantage that and utilizes conscope to put into work to be measured
Part is internally formed complete image, can disposably form the panorama that workpiece for measurement inwall is complete
Image, utilizes monocular camera disposably to shoot the panoramic picture of workpiece inner wall, and image is the completeest
Whole, it is simple to carry out the situation analysis of workpiece for measurement inwall；The system structure of the present invention is simple,
Imaging cost is relatively low, has preferable economic benefit, and extensibility is high, by adjusting
Whole position installs motor additional can realize automatization's imaging further.
Accompanying drawing explanation
Fig. 1 is the structural representation of the inwall panoramic imaging device of small, annular workpiece of the present invention；
Fig. 2 is the schematic diagram of the tapering selection of the conscope of the present invention；
Fig. 3 is the calculating schematic diagram that conscope tapering of the present invention selects.
The drawing reference numeral explanation of detailed description of the invention:
1-bracing frame 10-support bar 11-the first support 12-the second support
13-the 3rd support 2-camera fixed block 3-camera 4-shadowless lamp
5-workpiece for measurement 6-conscope 7-base 70-mounting seat.
Detailed description of the invention
For ease of being better understood from the purpose of the present invention, structure, feature and effect etc., existing
In conjunction with the drawings and specific embodiments, the present invention is described in further detail.
As it is shown in figure 1, the present invention relates to the inwall panoramic imagery dress of a kind of small, annular workpiece
Put, including: a bracing frame 1, support frame as described above 1 includes a support bar 10, is installed on institute
State one first support 11 on support bar 10, be installed on described support bar 10 one second
Support 12 and one the 3rd support 13 being installed on described support bar 10, described second support
12 lower sections being positioned at described first support 11, described 3rd support 13 is positioned at described second
The lower section of frame 12, is installed on the camera fixed block 2 on described first support 11, is fixed on
Camera 3 on described camera fixed block 2, is installed on described second support 12 without shadow
Lamp 4, is fixed on the base 7 below support frame as described above 1, and described base 7 is provided with an installation
Seat 70 is for installing a conscope 6, and support frame as described above 1 and described base 7 are each attached to one
On workbench (not shown).
As it is shown in figure 1, described first support 11, described second support 12 and described 3rd
Frame 13 all can move up and down along described support bar 10；Described camera fixed block 2 is permissible
Move horizontally along described first support 11；Described shadowless lamp 4 can be along described second
Frame 12 moves horizontally；Described 3rd support 13 is that a clamping limb is for clamping a workpiece for measurement 5.
As it is shown in figure 1, described camera 3 is industrial camera, it is fixed on described phase by screw
On machine fixed block 2, described camera 3 connects a computer (not shown), and computer is to described
The photo of camera 3 shooting processes and stores.Described shadowless lamp 4 in the form of a ring, light face
Color is white, and intensity of light can be adjusted according to actual needs.Described workpiece for measurement 5 is
Small, annular workpiece, during detection, described conscope 6 enters in described workpiece for measurement 5, and
And there is gap on described workpiece for measurement 5 and described conscope 6 surface.
The operation principle of the present invention is as follows:
As in figure 2 it is shown, set the inwall of described workpiece for measurement 5 one-tenth on described conscope 6
As the horizontal width of annulus is r, if the internal bore radius of described workpiece for measurement 5 be R, described in treat
The height surveying workpiece 5 is H, and the tapering of described conscope 6 is α.Owing to described camera 3 is
Vertical shooting, so in the reflection light CB of workpiece for measurement 5 inwall and described conscope 6
Axes O G is parallel, so ∠ BCG=α, according to the principle of reflection of light, ∠ ACD=α, again because
AE is parallel to OG, so ∠ AED=α, i.e. triangle AEC are isosceles triangle, and AC=AE=H,
Triangle ABF is similar to triangle CDF, so ∠ BAF=α, AF=2*H*sin
α, AB=r, cos α=AB/AF, releases cos α=r/ (2*Hsin α), i.e. r=H*sin2 α,
Due to r < R, then H*sin2 α≤R, according to the difference of R, H value, the tapering of conscope 6
α value also can occur to change accordingly, point following two situation:
1, as H≤R, H*sin2 α≤R perseverance is set up, and α is acute angle, takes α=45 °,
I.e. during r=H, r takes the value of maximum.The most now imaging becomes apparent from, more completely.
2, as H > R time, can be in the hope of α=pi/2-1/2*arcsin (R/H), by the public affairs of α
Formula understands, and now α is obtuse angle；Or α=1/2*arcsin (R/H), can by the formula of α
Knowing, now α is acute angle；So r=R now, it is maximum.
The inwall panoramic imaging device using described small, annular workpiece carries out the method bag of imaging
Containing following steps:
Step one: as it is shown on figure 3, described workpiece for measurement 5 internal bore radius R=10mm, highly
H=10mm, calculates the tapering α of described conscope 6 according to the operation principle of the present invention, by
Corresponding computing formula determine the tapering of conscope 6 be 45 ° (due to described workpiece for measurement 5
Endoporus there is depth problem, in order to imaging effect is more preferable, so taking described conscope 6
Tapering should be 45 °≤α≤50 °), then the conscope 6 designed is arranged on the described end
On seat 7.
Step 2: described base 7 is connected with support frame as described above 1.
Step 3: be installed on described 3rd support 13 by described workpiece for measurement 5, makes described
Workpiece for measurement 5 and described conscope 6 coaxial line, move up and down described second support 12 and make institute
State conscope 6 and be deep into the inside of described workpiece for measurement 5, and keep described workpiece for measurement 5
Gap is had with described conscope 6 surface.
Step 4: described shadowless lamp 4 is installed on described second support 12, moves horizontally
Described shadowless lamp 4, moves up and down described second support 12 simultaneously, is adjusted by described shadowless lamp 4
The whole surface to described workpiece for measurement 5, keeps described shadowless lamp 4 and described workpiece for measurement 5
Coaxial line, opens described shadowless lamp 4.
Step 5: described camera 3 is connected with screw, then with described camera fixed block 2
Described camera fixed block 2 is installed on described first support 11, moves horizontally described camera
Fixed block 2, moves up and down described first support 11 simultaneously, described camera 3 is adjusted to institute
State the surface of workpiece for measurement 5 and described conscope 6, keep described camera 3 to treat with described
Survey workpiece 5 coaxial line, make the photographic head of described camera 3 be placed on described shadowless lamp 4 light
Centre, open camera 3.
Step 6: according to step 3, four, five corresponding regulative modes, adjust described circular cone
Mirror 6, described workpiece for measurement 5, described shadowless lamp 4, the axiality of described camera 3 and vertical
Distance.
Step 7: according to the image shown above with the computer that described camera 3 is connected, adjusts
Save the focal length of described camera 3, and adjust the intensity of described shadowless lamp 4 light, make imaging
More complete display.
Step 8: shoot the inwall panorama sketch of described workpiece for measurement 5, disposable formation is complete
Inwall panoramic picture clearly, finally with computer disposal, analyze and store captured interior
Wall panoramic picture.
Detailed description above is only the explanation of presently preferred embodiments of the present invention, non-therefore limits to this
The scope of the claims of invention, so, what all utilization description of the invention and diagramatic content were done etc.
Effect technique changes, and is both contained in the scope of the claims of the present invention.
Claims (10)
1. the inwall panoramic imaging device of a small, annular workpiece, it is characterised in that including:
One bracing frame (1), support frame as described above (1) includes a support bar (10), arranges
On described support bar one first support (11) of (10), be arranged at described support bar (10)
On one second support (12) and be arranged at one the 3rd support of (10) on described support bar
(13), described second support (12) is positioned at the lower section of described first support (11), institute
State the 3rd support (13) and be positioned at the lower section of described second support (12)；
One camera fixed block (2), is arranged on described first support (11)；
One camera (3), is fixed on described camera fixed block (2)；
One shadowless lamp (4), is arranged on described second support (12)；
One base (7), is fixedly installed on support frame as described above (1) lower section；
One conscope (6), is arranged on described base (7).
The inwall panoramic imaging device of small, annular workpiece the most according to claim 1,
It is characterized in that: described 3rd support (13) is a clamping limb, for clamping one work to be measured
Part (5).
The inwall panoramic imaging device of small, annular workpiece the most according to claim 2,
It is characterized in that: described workpiece for measurement (5) is a small, annular workpiece.
The inwall panoramic imaging device of small, annular workpiece the most according to claim 1,
It is characterized in that: described first support (11), described second support (12) and described
Three supports (13) are all movably arranged on the axis direction of described support bar (10).
The inwall panoramic imaging device of small, annular workpiece the most according to claim 1,
It is characterized in that: described shadowless lamp (4) is movably arranged on the axle of described second support (12)
Heart direction.
The inwall panoramic imaging device of small, annular workpiece the most according to claim 1,
It is characterized in that: described camera fixed block (2) is movably arranged on described first support (11)
Axis direction.
The inwall panoramic imaging device of small, annular workpiece the most according to claim 1,
It is characterized in that: described camera (3) is industrial camera, described camera (3) calculates with one
Machine is connected, and described computer is used for processing and store described small, annular workpiece inner wall panorama
Image.
The inwall panoramic imaging device of small, annular workpiece the most according to claim 1,
It is characterized in that: described base (7) is provided with a mounting seat (70) and is used for fixing described circular cone
The bottom of mirror (6).
9. the inwall panoramic imaging device of the small, annular workpiece described in a claim 1 enters
The method of row imaging, it is characterised in that comprise the steps of
Step one, according to workpiece for measurement (5) size, be calculated as follows formula calculate described circle
The tapering of axicon lens (6)；
The inwall of described workpiece for measurement (5) imaging annulus on described conscope (6)
Horizontal width is r, and the internal bore radius of described workpiece for measurement (5) is R, described workpiece for measurement (5)
Height be H, the tapering of conscope (6) is α, cos α=r/ (2*H*sin α), i.e.
R=H*sin2 α, as r≤R (i.e. H*sin2 α≤R), the tapering α of conscope (6)
Value changes according to the difference of R, H value, point following two situation:
As H≤R, H*sin2 α≤R perseverance is set up, and α is acute angle, when taking α=45 °, r=H
For maximum；
As H > R time, α=pi/2-1/2*arcsin (R/H), α are obtuse angle；Or α
=1/2*arcsin (R/H), α are acute angle；R=R is maximum；
And the conscope (6) made by this result of calculation is installed in described base (7)；
Step 2: support frame as described above (1) is fixed on described base (7)；
Step 3: workpiece for measurement (5) is installed on described 3rd support (13), makes institute
State workpiece for measurement (5) and described conscope (6) coaxial line, adjust described 3rd support (13)
Make described conscope (6) be deep into the inside of described workpiece for measurement (5), and keep institute
State workpiece for measurement (5) and have gap with described conscope (6) surface；
Step 4: be installed on by described shadowless lamp (4) on described second support (12), will
Described shadowless lamp (4) is adjusted to the surface of described workpiece for measurement (5), keeps described nothing
Shadow lamp (4) and described workpiece for measurement (5) coaxial line, open described shadowless lamp (4)；
Step 5: be installed on by described camera (3) on described camera fixed block (2), will
Described camera fixed block (2) is installed on described first support (11), by described camera (3)
It is adjusted to the surface of described workpiece for measurement (5) and described conscope (6), keeps described
Camera (3) and described workpiece for measurement (5) coaxial line, open described camera (3)；
Step 6: regulate the focal length of described camera (3), and adjust described shadowless lamp (4)
The intensity of light, the inwall panoramic imagery making described workpiece for measurement (5) is clear, shoots and stores up
Document on file sheet.
The inwall panoramic imaging device of small, annular workpiece the most according to claim 9
The method carrying out imaging, it is characterised in that: wherein in step one, as H≤R, take 45 °
≤α≤50°。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510340417.7A CN106323980A (en) | 2015-06-18 | 2015-06-18 | Small annular workpiece inner wall panoramic imaging apparatus and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510340417.7A CN106323980A (en) | 2015-06-18 | 2015-06-18 | Small annular workpiece inner wall panoramic imaging apparatus and method |
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| Publication Number | Publication Date |
|---|---|
| CN106323980A true CN106323980A (en) | 2017-01-11 |
Family
ID=57732763
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510340417.7A Withdrawn CN106323980A (en) | 2015-06-18 | 2015-06-18 | Small annular workpiece inner wall panoramic imaging apparatus and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107271306A (en) * | 2017-07-27 | 2017-10-20 | 西南科技大学 | It is a kind of to carry drawing, the friction-wear detecting apparatus of press mechanism and method of testing |
| CN108226181A (en) * | 2018-01-12 | 2018-06-29 | 天津大学 | A kind of annular solid interior wall construction vision detection system |
| CN108362327A (en) * | 2018-01-12 | 2018-08-03 | 天津大学 | A kind of annular solid interior wall construction visible detection method |
| CN108593679A (en) * | 2018-05-07 | 2018-09-28 | 深圳华云科技实业有限公司 | A kind of visual detection equipment |
| WO2018182526A1 (en) * | 2017-03-31 | 2018-10-04 | Nanyang Technological University | Apparatus for analysing a specimen |
| CN109283177A (en) * | 2017-07-22 | 2019-01-29 | 青岛理工大学 | Detection device and detection method for assembly quality of side face of U-shaped groove |
| CN110426348A (en) * | 2019-09-06 | 2019-11-08 | 二八六视觉科技(佛山)有限责任公司 | A kind of cylinder inner face detection device and its detection method |
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| CN113030096A (en) * | 2021-02-25 | 2021-06-25 | 无锡金元启信息技术科技有限公司 | Industrial product micro hole wall defect imaging device and identification algorithm |
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- 2015-06-18 CN CN201510340417.7A patent/CN106323980A/en not_active Withdrawn
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018182526A1 (en) * | 2017-03-31 | 2018-10-04 | Nanyang Technological University | Apparatus for analysing a specimen |
| CN109283177A (en) * | 2017-07-22 | 2019-01-29 | 青岛理工大学 | Detection device and detection method for assembly quality of side face of U-shaped groove |
| CN107271306A (en) * | 2017-07-27 | 2017-10-20 | 西南科技大学 | It is a kind of to carry drawing, the friction-wear detecting apparatus of press mechanism and method of testing |
| CN108226181A (en) * | 2018-01-12 | 2018-06-29 | 天津大学 | A kind of annular solid interior wall construction vision detection system |
| CN108362327A (en) * | 2018-01-12 | 2018-08-03 | 天津大学 | A kind of annular solid interior wall construction visible detection method |
| CN108593679A (en) * | 2018-05-07 | 2018-09-28 | 深圳华云科技实业有限公司 | A kind of visual detection equipment |
| CN110426348A (en) * | 2019-09-06 | 2019-11-08 | 二八六视觉科技(佛山)有限责任公司 | A kind of cylinder inner face detection device and its detection method |
| CN113030096A (en) * | 2021-02-25 | 2021-06-25 | 无锡金元启信息技术科技有限公司 | Industrial product micro hole wall defect imaging device and identification algorithm |
| CN112798608A (en) * | 2021-04-14 | 2021-05-14 | 常州微亿智造科技有限公司 | Optical detection device and optical detection method for side wall of inner cavity of mobile phone camera support |
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