CN104181171A - Method and device for shooting images of inner and outer walls of circular-hole workpiece - Google Patents

Method and device for shooting images of inner and outer walls of circular-hole workpiece Download PDF

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Publication number
CN104181171A
CN104181171A CN201410389145.5A CN201410389145A CN104181171A CN 104181171 A CN104181171 A CN 104181171A CN 201410389145 A CN201410389145 A CN 201410389145A CN 104181171 A CN104181171 A CN 104181171A
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CN
China
Prior art keywords
circular hole
hole workpiece
inwall
image
camera
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CN201410389145.5A
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Chinese (zh)
Inventor
陈欣
毕磊
李源
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明泰信科精密仪器科技(苏州)有限公司
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Priority to CN201410389145.5A priority Critical patent/CN104181171A/en
Publication of CN104181171A publication Critical patent/CN104181171A/en

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Abstract

The invention provides a method and a device for shooting images of the inner and outer walls of a circular-hole workpiece. The device mainly comprises a plane reflector, a linear motion platform, a rotary motion platform and an inner wall camera, wherein the plane reflector stretches into the circular-hole workpiece from the bottom of the circular-hole workpiece under the support of a sliding platform and reflects images of the inner wall of the circular-hole workpiece; the inner wall camera is mounted above the circular-hole workpiece, and an image forming surface of the inner wall camera is perpendicular to a reflection surface of the plane reflector; the circular-hole workpiece is driven to move to a starting height by the linear motion platform, is driven to rotate to a starting angle by the rotary motion platform and then is photographed so as to obtain the images of the inner wall of the circular-hole workpiece. By virtue of the device, the inner wall camera is capable of conveniently shooting the images of the parts at different heights of the inner wall of the circular-hole workpiece under the cooperation of the plane reflector, and the images of the inner wall are further stored and combined by a processor so as to obtain an integrated image of the inner wall of the circular-hole workpiece.

Description

The inside and outside wall of circular hole workpiece is carried out to the method and apparatus of image taking

Technical field

The present invention relates to surface of the work detection technique field, relate in particular to a kind of method and apparatus that the inside and outside wall of circular hole workpiece is carried out to image taking.

Background technology

At present, the function part of minute shape size obtains developing more and more widely and application in the field such as automobile making, Aero-Space, and the surface quality of these micro-structure parts has also been proposed to more and more higher requirement.Wherein, more and more for the outer wall surface of circular hole workpiece and the quality testing demand of inner wall surface, especially thinner to some tube walls circular hole workpiece, is necessary that the quality on the inner and outer wall surface to workpiece detects simultaneously, to find to connect the problem of defect and so on.

It is a difficult point that the inwall of circular hole workpiece is carried out to test problems all the time.A kind of method that the inwall of circular hole workpiece is detected of the prior art is: whether the inwall that adopts magnifier or industrial endoscope to observe circular hole workpiece by human eye exists defect.

The shortcoming of the above-mentioned method that the inwall of circular hole workpiece is detected of the prior art is: this detection method relies on artificial observation, and the testing result obtaining is affected by artifact, and testing result may vary with each individual.The method cannot be preserved the image of the inwall of the circular hole workpiece of observing, and is not easy to the comprehensive analysis of testing result, and efficiency is lower.And adopt the observational technique of industrial endoscope also to exist price higher, and the shortcoming that cannot simultaneously detect the inside and outside wall of circular hole workpiece.

Summary of the invention

Technical matters solved by the invention is: the testing result of the inwall on circular hole workpiece of the prior art is affected by artifact, needs further to be improved.

The invention provides following scheme:

A device that the inside and outside wall of circular hole workpiece is carried out to image taking, comprising: plane mirror, and linear motion platform, platform and inwall camera rotatablely move;

Described plane mirror, for extend into the inside of described circular hole workpiece from the bottom of circular hole workpiece under the support of slide unit, the reflecting surface direction of described plane mirror is parallel with the axis of described circular hole workpiece, reflects the image of the inwall of described circular hole workpiece;

Described linear motion platform, for driving described circular hole workpiece vertical direction to move up and down;

The described platform that rotatablely moves, for driving described circular hole workpiece horizontal direction to rotatablely move;

Described inwall camera, for under the support of support, be arranged on described circular hole workpiece above, the imaging surface of described inwall camera is vertical with the reflecting surface direction of described plane mirror, drive described circular hole workpiece movable to the starting altitude detecting at described linear motion platform, the described platform that rotatablely moves drives described circular hole workpiece to rotate to after the start angle of detection, the processing of taking pictures of described inwall camera, obtains the image of the inwall of described circular hole workpiece.

Described device also comprises:

Outer wall camera, for be arranged on the side of described circular hole workpiece under the support of support, the imaging surface of described outer wall camera is parallel with the axis of described circular hole workpiece, drive described circular hole workpiece movable to the starting altitude detecting at described linear motion platform, the described platform that rotatablely moves drives described circular hole workpiece to rotate to after the start angle of detection, the processing of taking pictures of described outer wall camera, obtains the image of the outer wall of described circular hole workpiece.

Described inwall camera and inwall telecentric lens are grouped together and are arranged on inwall camera support, utilize described inwall camera support to realize the displacement of vertical direction and the inching of incident angle of described inwall camera;

Described outer wall camera and outer wall telecentric lens are grouped together and are arranged on outer wall camera support, utilize described outer wall camera support to realize the displacement of horizontal direction and the inching of incident angle of described outer wall camera;

Described plane mirror, catoptron sleeve, manually horizontal face plate, manually XY slide unit installation successively from top to bottom, be fixed on work top, realize the position of described plane mirror and the inching of direction by described manual horizontal face plate and manual XY slide unit.

Described circular hole workpiece rotatablely moves on platform described in being installed in by workholder, the described platform that rotatablely moves is installed on described linear motion platform by card extender, in the time that the inside and outside wall of described circular hole workpiece is carried out to image taking, described plane mirror, circular hole workpiece and the platform three's that rotatablely moves axial line is consistent;

The described platform that rotatablely moves progressively drives described circular hole workpiece rotation taking the detection angles of setting as interval, take a secondary inwall image at inwall camera described in each detection angles, described outer wall camera is taken a secondary outer wall image, after described circular hole workpiece rotates a circle, described linear motion platform drives described circular hole workpiece movable to the next height that detects.

Described device also comprises:

Processor, be used for by data line and described inwall camera, outer wall camera connects, platform rotatablely moves described in control, the startup of linear motion platform and stopping, receive the inwall image that described inwall camera is taken, the outer wall image that described outer wall camera is taken, by the inwall image receiving, outer wall image, association store is highly carried out in corresponding detection angles and detection, by same detection, highly inwall image and the outer wall image of corresponding adjacent detection angles merge respectively processing, obtain described same detection highly corresponding complete inwall image and outer wall image.

A method of the inside and outside wall of circular hole workpiece being carried out to image taking, comprising:

The inside that plane mirror is extend into described circular hole workpiece under the support of slide unit from the bottom of circular hole workpiece, the reflecting surface direction of described plane mirror is parallel with the axis of described circular hole workpiece, reflects the image of the inwall of described circular hole workpiece;

Drive described circular hole workpiece vertical direction to move up and down by linear motion platform, drive described circular hole workpiece horizontal direction to rotatablely move by the platform that rotatablely moves;

Inwall camera is arranged under the support of support described circular hole workpiece above, the imaging surface of described inwall camera is vertical with the reflecting surface direction of described plane mirror, drive described circular hole workpiece movable to the starting altitude detecting at described linear motion platform, the described platform that rotatablely moves drives described circular hole workpiece to rotate to after the start angle of detection, the processing of taking pictures of described inwall camera, obtains the image of the inwall of described circular hole workpiece.

Described method also comprises:

Outer wall camera is arranged under the support of support to the side of described circular hole workpiece, the imaging surface of described outer wall camera is parallel with the axis of described circular hole workpiece, drive described circular hole workpiece movable to the starting altitude detecting at described linear motion platform, the described platform that rotatablely moves drives described circular hole workpiece to rotate to after the start angle of detection, the processing of taking pictures of described outer wall camera, obtains the image of the outer wall of described circular hole workpiece.

Described method also comprises:

Described inwall camera and inwall telecentric lens are grouped together and are arranged on inwall camera support, utilize described inwall camera support to realize the vertical direction displacement of described inwall camera and the inching of incident angle;

Described outer wall camera and outer wall telecentric lens are grouped together and are arranged on outer wall camera support, utilize described outer wall camera support to realize the horizontal direction displacement of described outer wall camera and the inching of incident angle;

Described plane mirror, catoptron sleeve, manually horizontal face plate, manually XY slide unit installation successively from top to bottom, be fixed on work top, realize the position of described plane mirror and the inching of direction by described manual horizontal face plate and manual XY slide unit.

Described method also comprises:

Described circular hole workpiece rotatablely moves on platform described in being installed in by workholder, the described platform that rotatablely moves is installed on described linear motion platform by card extender, in the time that the inside and outside wall of described circular hole workpiece is carried out to image taking, described plane mirror, circular hole workpiece and the platform three's that rotatablely moves axial line is consistent;

The described platform that rotatablely moves progressively drives described circular hole workpiece rotation taking the detection angles of setting as interval, take a secondary inwall image at inwall camera described in each detection angles, described outer wall camera is taken a secondary outer wall image, after described circular hole workpiece rotates a circle, described linear motion platform drives described circular hole workpiece movable to the next height that detects.

Described method also comprises:

By processor by data line and described inwall camera, outer wall camera connects, platform rotatablely moves described in described processor control, the startup of linear motion platform and stopping, receive the inwall image that described inwall camera is taken, the outer wall image that described outer wall camera is taken, by the inwall image receiving, outer wall image, association store is highly carried out in corresponding detection angles and detection, by same detection, highly inwall image and the outer wall image of corresponding adjacent detection angles merge respectively processing, obtain described same detection highly corresponding complete inwall image and outer wall image.

As seen from the above technical solution provided by the invention, the embodiment of the present invention is by extending into plane mirror the inside of circular hole workpiece, inwall camera is arranged on to the top of circular hole workpiece, the focusing of inwall camera is vertical with the reflecting surface direction of plane mirror with imaging surface, can make inwall camera under the cooperation of plane mirror, photograph easily each highly corresponding inwall image of circular hole workpiece, and further utilize processor to preserve inwall image and merge processing, obtain the complete inwall image of circular hole workpiece, can make follow-uply according to inwall image is convenient, the inwall of circular hole workpiece to be detected, improve the detection efficiency of the inwall of circular hole workpiece.The method has overcome the inwall that relies on artificial observation circular hole workpiece, the shortcoming that testing result is affected by artifact.

Brief description of the drawings

In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.

A kind of structural representation that the inside and outside wall of circular hole workpiece is carried out to the device of image taking that Fig. 1 provides for the embodiment of the present invention 1;

A kind of particular flow sheet that the inside and outside wall of circular hole workpiece is carried out to the method for image taking that Fig. 2 provides for the embodiment of the present invention 2.

In figure: 1, inwall camera; 2, inwall telecentric lens; 3, inwall light source; 4, circular hole workpiece; 5, plane mirror; 6, catoptron sleeve; 7, manual horizontal face plate; 8, manual XY slide unit; 9, outer wall camera; 10, outer wall telecentric lens; 11, outer wall light source; 12, workholder; 13, the platform that rotatablely moves; 14, linear motion platform; 15, electric machine support; 16, vision system support; 17, outer wall camera support; 18, inwall camera support; 19, processor.

Embodiment

As mentioned above, the object of the invention is to: by plane mirror being extend into the inside of circular hole workpiece, inwall camera is arranged on to the top of circular hole workpiece, the imaging surface of inwall camera is vertical with the reflecting surface direction of plane mirror, each highly corresponding inwall image that can make inwall camera photograph easily circular hole workpiece under the cooperation of plane mirror, improves the detection efficiency of the inwall of circular hole workpiece.

For ease of the understanding to the embodiment of the present invention, be further explained explanation below in conjunction with accompanying drawing as an example of several specific embodiments example, and each embodiment does not form the restriction to the embodiment of the present invention.

Embodiment 1

This embodiment provides a kind of device that the inside and outside wall of circular hole workpiece is carried out to image taking, the structural representation of this device as shown in Figure 1, comprising: inwall camera 1, inwall telecentric lens 2, inwall light source 3, circular hole workpiece 4, plane mirror 5, catoptron sleeve 6, manual horizontal face plate 7, manual XY slide unit 8, outer wall camera 9, outer wall telecentric lens 10, outer wall light source 11, workholder 12, the platform 13 that rotatablely moves, linear motion platform 14, electric machine support 15, vision system support 16, outer wall camera support 17, inwall camera support 18 and processor 19.

In actual applications, above-mentioned inwall CCD camera 1, outer wall CCD camera 9 can be CCD (Charge-coupled Device, charge coupled cell) camera or digital camera.Above-mentioned plane mirror 5 can be the plane mirror with degree of tilt, such as being 45 degree plane mirrors.Above-mentioned processor 19 can be the computing machines such as PC (personal computer, personal computer).

Taking inwall camera 1, outer wall camera 9 as CCD cameras, plane mirror 5 is 45 degree plane mirrors below, processor 19 for computing machine be that example illustrates the embodiment of the present invention.

Above-mentioned circular hole workpiece inside and outside wall vision inspection apparatus can be divided into three basic composition unit:

1) motor automatic control unit, comprises circular hole workpiece 4, workholder 12, the platform 13 that rotatablely moves, linear motion platform 14, electric machine support 15 and computing machine 19;

2) mirror unit, comprises 45 degree plane mirrors 5, catoptron sleeve 6, manual horizontal face plate 7, manual XY slide unit 8;

3) vision system unit, comprises inwall CCD camera 1, inwall telecentric lens 2, inwall light source 3, outer wall CCD camera 9, outer wall telecentric lens 10, outer wall light source 11, vision system support 16, outer wall CCD camera support 17, inwall CCD camera support 18.

Circular hole workpiece 4 is installed in and is rotatablely moved on platform 13 by workholder 12.The platform that rotatablely moves is installed on linear motion platform 14 by L-type card extender.Linear motion platform 14 is fixed on work top by electric machine support 15 again.Rotatablely move platform 13 for hollow type, can make 45 degree plane mirrors 5 extend into circular hole workpiece 4 inside from bottom.The signal wire of platform 13 and linear motion platform 14 of rotatablely moving is connected with computing machine 19, in testing process, linear motion platform 13 drives described circular hole workpiece 4 vertical direction to move up and down, and the platform 14 that rotatablely moves drives circular hole workpiece 4 horizontal directions to rotatablely move.Control the startup of rotatablely move platform 13 and linear motion platform 14 and stop by computing machine 19.In testing process, 45 degree plane mirrors 5, circular hole workpiece 4 are consistent with platform 13 threes' that rotatablely move axial line.

45 degree plane mirrors 5, catoptron sleeve 6, manually horizontal face plate 7, manually XY slide unit 8 installation successively from top to bottom, be fixed on work top.Realize the described 45 degree position of plane mirror 5 and the inchings of direction by described manual horizontal face plate 7 and manual XY slide unit 8.In testing process, mirror unit keeps maintaining static.

Those skilled in the art will be understood that the degree of 45 in Fig. 1 plane mirror 5, catoptron sleeve 6, manually horizontal face plate 7, manually the structural relation of XY slide unit 8 is only for giving an example, the 45 degree plane mirrors 5 that other are existing or may occur from now on, catoptron sleeve 6, manually horizontal face plate 7, manually the structural relation of XY slide unit 8 is as applicable to the embodiment of the present invention, such as, by manual horizontal face plate 7, manually the structure of XY slide unit 8 unites two into one, or, by catoptron sleeve 6, manually horizontal face plate 7, it is one that the structure of manual XY slide unit 8 closes three, also should be included in protection domain of the present invention, and be contained in this at this with way of reference.

Vision system unit has comprised for shooting and outer wall of inwall 2 cover visual detection unit for shooting.Wherein, inwall CCD camera 1 and inwall telecentric lens 2 are grouped together and are arranged on inwall CCD camera support 18, and camera lens is arranged on workpiece top downwards.Outer wall CCD camera 9 and outer wall telecentric lens 10 are grouped together and are arranged on outer wall CCD camera support 17, and camera lens is horizontally set on workpiece side.Inwall CCD camera support and outer wall CCD camera support are installed in respectively on vision system support 16, are finally fixed on work top.The signal wire of inwall CCD camera 1 and outer wall CCD camera 9 is connected with computing machine 19, when detection, controlled the shooting of inwall CCD camera 1 and outer wall CCD camera 9 by computing machine 19, CCD camera 1 and outer wall CCD camera 9 are by the image transmitting of taking to computing machine 19, and computing machine 19 is preserved the image receiving and the processing such as merging.

Those skilled in the art will be understood that the inwall CCD camera 1 in Fig. 1, the structural relation of inwall telecentric lens 2 and inwall CCD camera support 18, and outer wall CCD camera 9, the structural relation of outer wall telecentric lens 10 and outer wall CCD camera support 17 is only for giving an example, other inwall CCD cameras 1 existing or that may occur from now on, the structural relation of inwall telecentric lens 2 and inwall CCD camera support 18, outer wall CCD camera 9, the structural relation of outer wall telecentric lens 10 and outer wall CCD camera support 17 is as applicable to the embodiment of the present invention, also should be included in protection domain of the present invention, and be contained in this at this with way of reference.

In testing process, 45 degree plane mirrors 5, in circular hole inside workpiece, reflex to workpiece inwall image inwall CCD camera 1 imaging that is arranged on workpiece top.The rod of 45 degree plane mirrors 5 is as cylindrical, and its diameter can only be slightly less than the diameter of measured circle hole workpiece.Inwall CCD camera support can be realized the displacement of vertical direction and the inching of incident angle, is convenient to inwall CCD camera 1 imaging surface vertical with axis of workpiece.When detection, the outer wall image of circular hole workpiece directly enters 9 imagings of outer wall CCD camera.Outer wall CCD camera support can be realized the displacement of horizontal direction and the inching of incident angle, is convenient to outer wall CCD camera 9 imaging surfaces parallel with axis of workpiece.

The imaging surface of inwall CCD camera 1 is vertical with the reflecting surface direction of 45 degree plane mirrors 5, drive described circular hole workpiece 4 to move to the starting altitude of detection at described linear motion platform 14, the described platform 13 that rotatablely moves drives described circular hole workpiece 4 to rotate to after the start angle of detection, the processing of taking pictures of described inwall CCD camera 1, obtains the image of the inwall of described circular hole workpiece 4.

The imaging surface of outer wall CCD camera 9 is parallel with the axis of circular hole workpiece 4, drive described circular hole workpiece 4 to move to the starting altitude of detection at described linear motion platform 14, the described platform 13 that rotatablely moves drives described circular hole workpiece 4 to rotate to after the start angle of detection, outer wall CCD camera 9 processing of taking pictures, obtains the image of the outer wall of described circular hole workpiece 4.

The startup of the shooting operation of above-mentioned inwall CCD camera 1, outer wall CCD camera 9 can be controlled by above-mentioned computing machine 19, also can pass through manual control.

Inwall light source 3 in above-mentioned Fig. 1 and outer wall light source 11 can be natural light and artificial light, and wherein, artificial light can be flashlamp, sunlamp, cinema lamp.These three kinds is more professional light.The colour temperature of these three kinds of lamps is all very accurate, 5500K left and right.Artificial light can also for more cheap be tungsten lamp and three-basic-colour lamp.

Electric machine support 15 can be as shown in Figure 1 180 degree horizontal angles with vision system support 16 and be oppositely arranged, and also can be 90 degree horizontal angle settings.

In the process that the inside and outside wall of circular hole workpiece is detected, the platform 13 that rotatablely moves progressively drives described circular hole workpiece rotation taking the detection angles of setting as interval, take a secondary inwall image at inwall CCD camera 1 described in each detection angles, described outer wall CCD camera 9 is taken a secondary outer wall image, after described circular hole workpiece rotates a circle, described linear motion platform 14 drives described circular hole workpiece movable to the next height that detects.

The detailed operating process of above-mentioned rotatablely move platform 13 and linear motion platform 14 is as follows:

The described platform 13 that rotatablely moves, specifically for drive described circular hole workpiece movable after the starting altitude detecting at described linear motion platform, drive described circular hole workpiece to rotate to the start angle of detection, take the first width inwall image at described inwall CCD camera 1 at described start angle, described outer wall CCD camera 9 is taken after the first width outer wall image at described start angle, drive described circular hole workpiece clockwise or be rotated counterclockwise second detection angles, take the second width inwall image at described inwall CCD camera 1 in described second detection angles, described outer wall CCD camera 9 is taken after the second width outer wall image in described second detection angles, drive described circular hole workpiece clockwise or be rotated counterclockwise the 3rd detection angles, by that analogy, until the image of the inside and outside wall of whole circumference corresponding to the described starting altitude of described circular hole workpiece is all taken,

Described linear motion platform 14, after being all taken, drives described circular hole workpiece movable to the second to detect height specifically for the image of the inside and outside wall at whole circumference corresponding to the described starting altitude of described circular hole workpiece;

The described platform 13 that rotatablely moves, specifically for drive described circular hole workpiece movable to the second to detect after height at described linear motion platform, drive described circular hole workpiece to rotate to the start angle of detection, take the first width inwall image at described inwall CCD camera 1 at described start angle, described outer wall CCD camera 9 is taken after the first width outer wall image at described start angle, drive described circular hole workpiece clockwise or be rotated counterclockwise second detection angles, take the second width inwall image at described inwall CCD camera 1 in described second detection angles, described outer wall CCD camera 9 is taken after the second width outer wall image in described second detection angles, drive described circular hole workpiece clockwise or be rotated counterclockwise the 3rd detection angles, by that analogy, until the image of the inside and outside wall of the highly corresponding whole circumference of described second detection of described circular hole workpiece is all taken,

Described linear motion platform 14, after specifically for described second detection at described circular hole workpiece, highly the image of the inside and outside wall of corresponding whole circumference is all taken, drive three of described circular hole workpiece movables to the to detect height, by that analogy, until the image of whole inside and outside walls of described circular hole workpiece be all taken.

In the process that the inside and outside wall of circular hole workpiece is detected, the operating process of above-mentioned processor 19 is as follows:

Processor 19, for being connected with described inwall CCD camera 1, outer wall CCD camera 9 by data line, after the image of whole inside and outside walls of described circular hole workpiece is all taken, the platform that rotatablely moves described in control, linear motion platform are out of service;

Receive the inwall image that described inwall CCD camera 1 takes, the outer wall image that described outer wall CCD camera 9 is taken, the inwall image receiving, outer wall image are numbered successively, by the inwall image of identical numbering, outer wall image, corresponding detection angles with detect height association store in image information table;

Read respectively highly corresponding all inwall images and the outer wall image of same detection of storing in described image information table, the inwall image of adjacent detection angles highly corresponding same detection is merged to processing, obtain the highly complete inwall image of correspondence of described same detection; The outer wall image of adjacent detection angles highly corresponding same detection is merged to processing, obtain the highly complete outer wall image of correspondence of described same detection.

Repeat above-mentioned image reading, merge processing procedure, obtain all detect corresponding highly respectively complete inwall image and outer wall images.

Embodiment 2

Based on the inside and outside wall of circular hole workpiece being carried out to the device of image taking shown in Fig. 1, the treatment scheme of a kind of method of the inside and outside wall of circular hole workpiece being carried out to image taking that this embodiment provides as shown in Figure 2, comprises following treatment step:

Step S210, circular hole workpiece is arranged on and is rotatablely moved on platform by workholder, make workpiece axial line consistent with the platform axial line that rotatablely moves.

Step S220, adjust manual XY slide unit, make the axial line of 45 degree plane mirrors consistent with the platform axial line that rotatablely moves; Adjust manual horizontal face plate, make the reflecting surface direction of 45 degree plane mirrors consistent with the sensing of outer wall CCD camera, parallel with the axis of described circular hole workpiece.

Step S230, adjustment inwall CCD camera support, make inwall imaging clearly, and imaging surface is vertical with axis of workpiece.Adjust outer wall CCD camera support, make outer wall imaging clearly, imaging surface is parallel with axis of workpiece.

Step S240, start by rotatablely move platform, linear motion platform of computer control, control linear motion platform and drive circular hole workpiece upwards or move downward to the starting altitude of workpiece for measurement wall; Control rotatablely moves after platform drives circular hole workpiece to rotate to an angle and stops, and moves to the start angle of workpiece for measurement wall.

Plane mirror is the image of the inwall of reflection circle hole workpiece vertically upward, inwall CCD camera is taken a width inwall image at described start angle, outer wall CCD camera is taken after the first width outer wall image at described start angle, inwall CCD camera and outer wall CCD camera are transferred to computing machine by the first sub-picture of taking by data line, computing machine is numbered the first secondary inwall image, the outer wall image that receive respectively, such as, being inwall image 1 by the first secondary inwall picture number, is outer wall image 1 by the first secondary outer wall picture number.Then, the first secondary inwall image, the first secondary outer wall image, start angle and starting altitude are carried out association store by computing machine, so that follow-up merging and analyzing and processing.

Computing machine can adopt following image information table to store inwall picture number, outer wall picture number, detection angles and detection elevation information.

Image information table

Sequence number Inwall picture number Outer wall picture number Detection angles Detect height 1 1 1 Start angle Starting altitude 2 2 2 Second detection angles Starting altitude 3 3 3 The 3rd detection angles Starting altitude 4 1 1 Start angle Second is detected height 5 2 2 Second detection angles Second is detected height 6 3 3 The 3rd detection angles Second is detected height 7

In above-mentioned image information table, highly choose three detection angles with each detection, it is that example illustrates that each detection angles is taken piece image.

Step S250, the platform that rotatablely moves drives described circular hole workpiece clockwise or is rotated counterclockwise second detection angles, take the second width inwall image at described inwall CCD camera in described second detection angles, described outer wall CCD camera is taken after the second width outer wall image in described second detection angles, inwall CCD camera and outer wall CCD camera are transferred to computing machine by the second sub-picture of taking by data line, computing machine is by the second secondary inwall image receiving, the second secondary outer wall image is numbered respectively, by the second secondary inwall image, the second secondary outer wall image, second detection angles and starting altitude association store are in above-mentioned image information table.

The described platform that rotatablely moves drives described circular hole workpiece clockwise or is rotated counterclockwise the 3rd detection angles, by that analogy, until the image of the inside and outside wall of whole circumference corresponding to the described starting altitude of described circular hole workpiece is all taken, all images that photograph are all transferred to computing machine.Computing machine is numbered all inwall images, the outer wall image that receive, by the inwall image of identical numbering, outer wall image, corresponding detection angles with detect height association store in above-mentioned image information table.

Step S260, after the image of the inside and outside wall of whole circumference corresponding to the described starting altitude of described circular hole workpiece is all taken, described linear motion platform drives described circular hole workpiece movable to the second to detect height.

Drive described circular hole workpiece movable to the second to detect after height at described linear motion platform, the described platform that rotatablely moves drives described circular hole workpiece to rotate to the start angle of detection, inwall CCD camera is taken a width inwall image at described start angle, outer wall CCD camera is taken after the first width outer wall image at described start angle, inwall CCD camera and outer wall CCD camera are transferred to computing machine by the first sub-picture of taking by data line, computing machine is by the first secondary inwall image receiving, outer wall image is numbered respectively, computing machine is by the first secondary inwall image, the first secondary outer wall image, start angle and second detection height association store are in above-mentioned image information table, so that follow-up merging and analyzing and processing.

The platform that rotatablely moves drives described circular hole workpiece clockwise or is rotated counterclockwise second detection angles, take the second width inwall image at described inwall CCD camera in described second detection angles, described outer wall CCD camera is taken after the second width outer wall image in described second detection angles, inwall CCD camera and outer wall CCD camera are transferred to computing machine by the second sub-picture of taking by data line, computing machine is by the second secondary inwall image receiving, the second secondary outer wall image is numbered respectively, by the second secondary inwall image, the second secondary outer wall image, second detection angles and second detection height association store are in above-mentioned image information table.

The described platform that rotatablely moves drives described circular hole workpiece clockwise or is rotated counterclockwise the 3rd detection angles, by that analogy, until second detection of described circular hole workpiece highly the image of the inside and outside wall of corresponding whole circumference be all taken.

In described second detection of described circular hole workpiece after highly the image of the inside and outside wall of corresponding whole circumference is all taken, described linear motion platform drives three of described circular hole workpiece movables to the to detect height, the rest may be inferred, repeat above-mentioned processing procedure, until the image of the inside and outside wall of the highly corresponding whole circumference of all detections of described circular hole workpiece is all taken, the complete inside and outside wall image of circular hole workpiece is all photographed.

All images that photograph are all transferred to computing machine by inwall CCD camera, outer wall CCD camera.Computing machine is numbered all inwall images, the outer wall image that receive, by the inwall image of identical numbering, outer wall image, corresponding detection angles and starting altitude association store in above-mentioned image information table.

Rotatablely move described in step S270, computer control platform, linear motion platform stops.

Described computing machine merges and analyzing and processing the image of storing in above-mentioned image information table, computing machine can read respectively highly corresponding all inwall images and the outer wall image of same detection of storing in above-mentioned image information table, such as, read all inwall images and outer wall image that starting altitude is corresponding.

The inwall image of adjacent detection angles highly corresponding same detection is merged to processing, obtain the highly complete inwall image of correspondence of above-mentioned same detection; The outer wall image of adjacent detection angles highly corresponding same detection is merged to processing, obtain the highly complete outer wall image of correspondence of above-mentioned same detection.

Computing machine repeats above-mentioned image reading, merges processing procedure, obtains all detect corresponding highly respectively complete inwall image and outer wall images.

In sum, the embodiment of the present invention is by extending into plane mirror the inside of circular hole workpiece, inwall camera is arranged on to the top of circular hole workpiece, the imaging surface of inwall camera is vertical with the reflecting surface direction of plane mirror, can make inwall camera under the cooperation of plane mirror, photograph easily each highly corresponding inwall image of circular hole workpiece, and further utilize processor to preserve inwall image and merge processing, obtain the complete inwall image of circular hole workpiece, can make follow-uply according to inwall image is convenient, the inwall of circular hole workpiece to be detected, improve the detection efficiency of the inwall of circular hole workpiece.The method has overcome the inwall that relies on artificial observation circular hole workpiece, the shortcoming that testing result is affected by artifact.

The embodiment of the present invention, also by the side of circular hole workpiece, outer wall camera being set, can be taken pictures and detect the inside and outside wall of circular hole workpiece simultaneously, and the relative position of the inside and outside wall image obtaining is corresponding, has improved detection efficiency.The method and apparatus of the embodiment of the present invention to realize cost lower.

What the inwall image detection of the circular hole workpiece of the embodiment of the present invention adopted is 45 degree plane mirrors and CCD direct imaging, outer wall image detection is CCD direct imaging, thereby to gather the inwall image and the outer wall image that obtain be all original image, need not demodulation reduce, image is undistorted.

One of ordinary skill in the art will appreciate that: accompanying drawing is the schematic diagram of an embodiment, the module in accompanying drawing or flow process might not be that enforcement the present invention is necessary.

As seen through the above description of the embodiments, those skilled in the art can be well understood to the mode that the present invention can add essential general hardware platform by software and realizes.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product can be stored in storage medium, as ROM/RAM, magnetic disc, CD etc., comprise that some instructions (can be personal computers in order to make a computer equipment, server, or the network equipment etc.) carry out the method described in some part of each embodiment of the present invention or embodiment.

Each embodiment in this instructions all adopts the mode of going forward one by one to describe, between each embodiment identical similar part mutually referring to, what each embodiment stressed is and the difference of other embodiment.Especially,, for device or system embodiment, because it is substantially similar in appearance to embodiment of the method, so describe fairly simplely, relevant part is referring to the part explanation of embodiment of the method.Apparatus and system embodiment described above is only schematic, the wherein said unit as separating component explanation can or can not be also physically to separate, the parts that show as unit can be or can not be also physical locations, can be positioned at a place, or also can be distributed in multiple network element.Can select according to the actual needs some or all of module wherein to realize the object of the present embodiment scheme.Those of ordinary skill in the art, in the situation that not paying creative work, are appreciated that and implement.

The above; only for preferably embodiment of the present invention, but protection scope of the present invention is not limited to this, is anyly familiar with in technical scope that those skilled in the art disclose in the present invention; the variation that can expect easily or replacement, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.

Claims (10)

1. a device that the inside and outside wall of circular hole workpiece is carried out to image taking, is characterized in that, comprising: plane mirror, and linear motion platform, platform and inwall camera rotatablely move;
Described plane mirror, for extend into the inside of described circular hole workpiece from the bottom of circular hole workpiece under the support of slide unit, the reflecting surface direction of described plane mirror is parallel with the axis of described circular hole workpiece, reflects the image of the inwall of described circular hole workpiece;
Described linear motion platform, for driving described circular hole workpiece vertical direction to move up and down;
The described platform that rotatablely moves, for driving described circular hole workpiece horizontal direction to rotatablely move;
Described inwall camera, for under the support of support, be arranged on described circular hole workpiece above, the imaging surface of described inwall camera is vertical with the reflecting surface direction of described plane mirror, drive described circular hole workpiece movable to the starting altitude detecting at described linear motion platform, the described platform that rotatablely moves drives described circular hole workpiece to rotate to after the start angle of detection, the processing of taking pictures of described inwall camera, obtains the image of the inwall of described circular hole workpiece.
2. the device that the inside and outside wall of circular hole workpiece is carried out to image taking according to claim 1, is characterized in that, described device also comprises:
Outer wall camera, for be arranged on the side of described circular hole workpiece under the support of support, the imaging surface of described outer wall camera is parallel with the axis of described circular hole workpiece, drive described circular hole workpiece movable to the starting altitude detecting at described linear motion platform, the described platform that rotatablely moves drives described circular hole workpiece to rotate to after the start angle of detection, the processing of taking pictures of described outer wall camera, obtains the image of the outer wall of described circular hole workpiece.
3. the device that the inside and outside wall of circular hole workpiece is carried out to image taking according to claim 1, is characterized in that:
Described inwall camera and inwall telecentric lens are grouped together and are arranged on inwall camera support, utilize described inwall camera support to realize the displacement of vertical direction and the inching of incident angle of described inwall camera;
Described outer wall camera and outer wall telecentric lens are grouped together and are arranged on outer wall camera support, utilize described outer wall camera support to realize the displacement of horizontal direction and the inching of incident angle of described outer wall camera;
Described plane mirror, catoptron sleeve, manually horizontal face plate, manually XY slide unit installation successively from top to bottom, be fixed on work top, realize the position of described plane mirror and the inching of direction by described manual horizontal face plate and manual XY slide unit.
4. according to the inside and outside wall of circular hole workpiece being carried out to the device of image taking described in claims 1 to 3 any one, it is characterized in that:
Described circular hole workpiece rotatablely moves on platform described in being installed in by workholder, the described platform that rotatablely moves is installed on described linear motion platform by card extender, in the time that the inside and outside wall of described circular hole workpiece is carried out to image taking, described plane mirror, circular hole workpiece and the platform three's that rotatablely moves axial line is consistent;
The described platform that rotatablely moves progressively drives described circular hole workpiece rotation taking the detection angles of setting as interval, take a secondary inwall image at inwall camera described in each detection angles, described outer wall camera is taken a secondary outer wall image, after described circular hole workpiece rotates a circle, described linear motion platform drives described circular hole workpiece movable to the next height that detects.
5. the device that the inside and outside wall of circular hole workpiece is carried out to image taking according to claim 4, is characterized in that, described device also comprises:
Processor, be used for by data line and described inwall camera, outer wall camera connects, platform rotatablely moves described in control, the startup of linear motion platform and stopping, receive the inwall image that described inwall camera is taken, the outer wall image that described outer wall camera is taken, by the inwall image receiving, outer wall image, association store is highly carried out in corresponding detection angles and detection, by same detection, highly inwall image and the outer wall image of corresponding adjacent detection angles merge respectively processing, obtain described same detection highly corresponding complete inwall image and outer wall image.
6. a method of the inside and outside wall of circular hole workpiece being carried out to image taking, is characterized in that, comprising:
The inside that plane mirror is extend into described circular hole workpiece under the support of slide unit from the bottom of circular hole workpiece, the reflecting surface direction of described plane mirror is parallel with the axis of described circular hole workpiece, reflects the image of the inwall of described circular hole workpiece;
Drive described circular hole workpiece vertical direction to move up and down by linear motion platform, drive described circular hole workpiece horizontal direction to rotatablely move by the platform that rotatablely moves;
Inwall camera is arranged under the support of support described circular hole workpiece above, the imaging surface of described inwall camera is vertical with the reflecting surface direction of described plane mirror, drive described circular hole workpiece movable to the starting altitude detecting at described linear motion platform, the described platform that rotatablely moves drives described circular hole workpiece to rotate to after the start angle of detection, the processing of taking pictures of described inwall camera, obtains the image of the inwall of described circular hole workpiece.
7. method of the inside and outside wall of circular hole workpiece being carried out to image taking according to claim 6, is characterized in that, described method also comprises:
Outer wall camera is arranged under the support of support to the side of described circular hole workpiece, the imaging surface of described outer wall camera is parallel with the axis of described circular hole workpiece, drive described circular hole workpiece movable to the starting altitude detecting at described linear motion platform, the described platform that rotatablely moves drives described circular hole workpiece to rotate to after the start angle of detection, the processing of taking pictures of described outer wall camera, obtains the image of the outer wall of described circular hole workpiece.
8. method of the inside and outside wall of circular hole workpiece being carried out to image taking according to claim 7, is characterized in that, described method also comprises:
Described inwall camera and inwall telecentric lens are grouped together and are arranged on inwall camera support, utilize described inwall camera support to realize the vertical direction displacement of described inwall camera and the inching of incident angle;
Described outer wall camera and outer wall telecentric lens are grouped together and are arranged on outer wall camera support, utilize described outer wall camera support to realize the horizontal direction displacement of described outer wall camera and the inching of incident angle;
Described plane mirror, catoptron sleeve, manually horizontal face plate, manually XY slide unit installation successively from top to bottom, be fixed on work top, realize the position of described plane mirror and the inching of direction by described manual horizontal face plate and manual XY slide unit.
9. according to the inside and outside wall of circular hole workpiece being carried out to the method for image taking described in claim 6 to 8 any one, it is characterized in that, described method also comprises:
Described circular hole workpiece rotatablely moves on platform described in being installed in by workholder, the described platform that rotatablely moves is installed on described linear motion platform by card extender, in the time that the inside and outside wall of described circular hole workpiece is carried out to image taking, described plane mirror, circular hole workpiece and the platform three's that rotatablely moves axial line is consistent;
The described platform that rotatablely moves progressively drives described circular hole workpiece rotation taking the detection angles of setting as interval, take a secondary inwall image at inwall camera described in each detection angles, described outer wall camera is taken a secondary outer wall image, after described circular hole workpiece rotates a circle, described linear motion platform drives described circular hole workpiece movable to the next height that detects.
10. method of the inside and outside wall of circular hole workpiece being carried out to image taking according to claim 9, is characterized in that, described method also comprises:
By processor by data line and described inwall camera, outer wall camera connects, platform rotatablely moves described in described processor control, the startup of linear motion platform and stopping, receive the inwall image that described inwall camera is taken, the outer wall image that described outer wall camera is taken, by the inwall image receiving, outer wall image, association store is highly carried out in corresponding detection angles and detection, by same detection, highly inwall image and the outer wall image of corresponding adjacent detection angles merge respectively processing, obtain described same detection highly corresponding complete inwall image and outer wall image.
CN201410389145.5A 2014-08-08 2014-08-08 Method and device for shooting images of inner and outer walls of circular-hole workpiece CN104181171A (en)

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CN107014829A (en) * 2017-06-13 2017-08-04 青岛理工大学 Internal surface of hole mass defect detection means and method based on total reflection dynamic image acquisition
CN107993265A (en) * 2017-11-29 2018-05-04 深圳市沃特沃德股份有限公司 The calibration facility of monocular sweeper, method and device
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Application publication date: 20141203