CN101109622A - Optical hole measuring device - Google Patents
Optical hole measuring device Download PDFInfo
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- CN101109622A CN101109622A CNA2007101428613A CN200710142861A CN101109622A CN 101109622 A CN101109622 A CN 101109622A CN A2007101428613 A CNA2007101428613 A CN A2007101428613A CN 200710142861 A CN200710142861 A CN 200710142861A CN 101109622 A CN101109622 A CN 101109622A
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Abstract
The invention provides an optic hole measuring device, which comprises a laser for giving out laser beam and a light pickup that are arranged opposite to each other. The light pickup is for receiving the light from the laser source that is reflected by the surface to be measured. The device is of simple structure, can carry out contactless measurement, is of high measuring efficiency and accuracy.
Description
Technical field
The present invention relates to a kind of optical hole measuring device.
Background technology
In the prior art, the measurement in and hole that diameter gradually diminish long for axial length, extensively the gauge that adopts is measured, promptly, the gauge of one prescribed level is put into along radially the putting into wherein of hole, when gauge can not along the hole axially further put into wherein the time, just can obtain the axial location at the close position of hole interior diameter and gauge diameter size, test repeatedly by the gauge that utilizes different sizes, obtain the data of hole inwall.But this gauge measuring accuracy is low.In addition, when the length vertically in hole is longer, be difficult to manually-operated, therefore, its operability is relatively poor.
In the prior art, also have a kind of hole measuring device, it is the instrument that has certain adhesive ability and deformability as plasticine etc.By this instrument is attached on the inwall in hole, obtain the situation of inwall.But the operation of this hole measuring device relies on manpower fully, and therefore, sum of errors intensity is very big, and, for the long hole of axial length, have no idea to realize operation basically.
Summary of the invention
The objective of the invention is to, but provide a kind of non-cpntact measurement simple in structure, efficiency of measurement height, measure optical hole measuring device accurately.
The optical hole measuring device of technical solution of the present invention 1 has the LASER Light Source and the optical take-up apparatus that are used to send laser that dispose in opposite directions, and described optical take-up apparatus is used to receive the light from described LASER Light Source by surface reflection to be measured.
Light source used in the present invention is a LASER Light Source, and LASER Light Source has the diffusion of being difficult for, optical density advantages of higher.Measuring hole wall in the mode of optics is a kind of non-contact measurement mode, and therefore, this device is a kind of noncontact measurement device.In addition, as light source of the present invention, can obtain comparatively accurate measurement data with LASER Light Source.In addition, the present invention is simple in structure.In addition, pick up the light that laser beam reflects with optical take-up apparatus on hole wall, employed signal own is exactly a light signal, and therefore, efficiency of measurement is also than higher.
On the basis of technical scheme 1, in the optical hole measuring device of technical solution of the present invention 2, described LASER Light Source is the annular laser generator.
The laser beam of annular laser generator emission ring-type does not need LASER Light Source to rotate, and just can form one along circumferential complete figure on hole wall, but one-shot measurement is treated the data of gaging hole one complete cycle, therefore, can further improve the efficient of measurement.
On the basis of technical scheme 2, in the optical hole measuring device of technical solution of the present invention 3, the laser that described LASER Light Source is sent and treat between the axis of gaging hole that formed angle is for more than or equal to 20 ° and less than 90 °.
Since along treat gaging hole radially on, the laser of LASER Light Source penetrates between the hole wall of putting and treat gaging hole has certain distance, therefore, if the laser that penetrates and treat formed angle too small between the axis of gaging hole, for example 1 °, then can cause the length vertically of whole optical hole measuring device long.Therefore, suitably increase formed angle between the axis of laser beam and LASER Light Source, help to shorten the length vertically of whole optical hole measuring device.
On the basis of technical scheme 1, in the optical hole measuring device of technical solution of the present invention 4, the coaxial setting of described LASER Light Source and optical take-up apparatus.
Like this, when utilizing this optical hole measuring device to survey circular hole, laser beam from LASER Light Source about equally to the length the inwall for the treatment of gaging hole, therefore, can form the regular relatively three-dimensional curve of shape, therefore, can be so that it be handled.
On the basis of technical scheme 1, in the optical hole measuring device of technical solution of the present invention 5, also have reflective member, it is provided between described LASER Light Source and the optical take-up apparatus, is used to reflect the laser beam of sending from LASER Light Source.
By reflective member is set, further shorten laser beam from LASER Light Source to the distance for the treatment of the gaging hole inwall, in addition, can also reduce requirement to LASER Light Source emergence angle (laser that sends with treat the formed angle of gaging hole central axis), therefore, can further shorten the length vertically of optical hole measuring device.
On the basis of technical scheme 5, in the optical hole measuring device of technical solution of the present invention 6, described reflective member has the reflecting part of the side surface shape that is circular cone or round platform, and, itself and LASER Light Source and the coaxial setting of optical take-up apparatus.
Because reflective member has the reflecting part of the side surface shape that is circular cone or round platform, and, itself and LASER Light Source and the coaxial setting of optical take-up apparatus, when utilizing this optical hole measuring device to survey circular hole, laser beam from LASER Light Source about equally to the length the inwall for the treatment of gaging hole, therefore, can form the regular relatively three-dimensional curve of shape, therefore, can be so that it be handled.
On the basis of technical scheme 6, in the optical hole measuring device of technical solution of the present invention 7, the coning angle of described reflective member is greater than 0 ° and is less than or equal to 90 °.
Like this, help optic pick-up picking up to light.
On any one basis of technical scheme 5 or 6, in the optical hole measuring device of technical solution of the present invention 8, the laser that described LASER Light Source can be sent and treat between the axis of gaging hole that formed angle is for greater than 0 ° and less than 90 °.
Owing to be provided with reflective member, can reduce requirement to the LASER Light Source emergence angle, but the laser beam that this laser sent need be mapped on the reflecting component, and also need optical take-up apparatus can pick up the formed curve of laser beam, therefore, preferred described LASER Light Source is sent and is treated that formed angle between the axis of gaging hole is for greater than 0 ° and less than 90 ° laser.
On the basis of technical scheme 7, in the optical hole measuring device optical hole measuring device of technical solution of the present invention 9, the laser that described LASER Light Source is sent and treat between the axis of gaging hole that formed angle is for greater than 0 ° and less than 45 °.
Because the greatest circle cone angle of described reflective member is 90 °, therefore, for the laser beam of being sent by LASER Light Source can be projected on the reflective member, need preferred described LASER Light Source to send and treat that formed angle between the axis of gaging hole is for greater than 0 ° and less than 45 ° laser.
On the basis of technical scheme 1, in the optical hole measuring device of technical solution of the present invention 10, also have adjusting mechanism, be used to adjust the distance between described light emitting source and described optical take-up apparatus.
By this adjusting mechanism is set, can observe the data that obtain by optical take-up apparatus on the limit, the limit is adjusted the relation of the position between light emitting source and the optical take-up apparatus.
Description of drawings
Fig. 1 is the diagrammatic cross-section of the optical hole measuring device of embodiment of the present invention 1, and this section is through the device central axis.
Fig. 2 is the principle of work synoptic diagram of the optical hole measuring device of embodiment of the present invention 1.
Fig. 3 is the diagrammatic cross-section of the optical hole measuring device of embodiment of the present invention 2, and this section is through the device central axis.
Fig. 4 is the principle of work synoptic diagram of the optical hole measuring device of embodiment of the present invention 2.
Embodiment
(embodiment 1)
Below, based on accompanying drawing embodiments of the present invention are illustrated.
Fig. 1 is the diagrammatic cross-section of the optical hole measuring device of embodiment of the present invention 1, and this section is through the device central axis.Fig. 2 is the principle of work synoptic diagram of the optical hole measuring device of embodiment of the present invention 1.
As shown in Figure 1, optical hole measuring device A has framework 5 and is arranged on the laser generator 1 as LASER Light Source in the framework 5, as the CCD camera 3 of optical take-up apparatus.In addition, this optical hole measuring device A is powered by power supply.
As shown in Figure 1, in the present embodiment, laser generator 1 is the loop laser generator that can send annular laser, and its laser beam of sending is the external diffusion shape, and promptly from shape, this laser beam is the side surface shape of circular cone.
Put into when treating gaging hole at optical hole measuring device A, treat the gaging hole inwall and form image thereon that by laser beam irradiation this CCD camera 3 is used to take this image.
Because laser generator 1 and CCD camera 3 can adopt existing well known device, therefore, omit explanation in this instructions to them.
Framework 5 comprises first framework 51 that is used to install laser generator 1, be used to the 3rd framework 53 second framework 52 of CCD camera 3 being installed and being used to connect first framework 51 and second framework 52.In the present embodiment, the 3rd framework 53 is the cylinder-like part of transparent glass.Why select cylinder-like part for use, be avoid laser that 53 pairs of loop laser generators of the 3rd framework send in the process of hole inwall irradiation to the influence of laser route.In addition, first framework 51 engages with 53 of the 3rd frameworks with 53 of the 3rd frameworks, second framework 52, and this juncture is not particularly limited, and can be multiple junctures such as screw thread or engaging.
As shown in Figure 1, laser generator 1 and first framework, 51 arranged coaxial.In addition, CCD camera 3 and second framework, 52 arranged coaxial.Thus, by the joint between each parts of framework 5, make above-mentioned laser generator 1 and CCD camera 3 by arranged coaxial.
For the structure of laser generator 1 to the installation of first framework 51, can adopt various known mounting structures, for example, adopt screw thread to install, engage installation etc., for example, near the end on (right side among Fig. 1) on the right side of the mounting hole of first framework 51, be provided with flange part, after laser generator 1 is put into mounting hole, put into fixture from the left side (left side Fig. 2) of mounting hole, laser generator 1 is fixed in the mounting hole etc.CCD camera 3 is to the structure of the installation of second framework 52, with the structural similarity of laser generator 1 to the installation of first framework 51, and its explanation of Therefore, omited.
In addition, there is no particular limitation for the material of first framework 51 and second framework 52, and it can use resin material, also can select metal material or other.In addition, for their shape, also there is no particular limitation, can be cylindrical, also can be roughly to be prism shape etc.What use in the present embodiment is cylindrical.Adopt cylindrical being easy to locate, and be easy to processing.
In addition, first framework 51 is used for optical hole measuring device is installed in other member or/and second framework 52 is provided with fixture.
As shown in Figure 1, the Laser emission end 10 of laser generator 1 disposes in opposite directions with the camera end 30 of CCD camera 3, like this, is convenient to be picked up by optical take-up apparatus by the laser beam that laser generator 1 sends.
Formed angle is more than or equal to 20 ° and less than 90 ° laser generator between preferred its laser that sends of described laser generator and the axis for the treatment of gaging hole.Formed angle is 45 ° between laser that selected laser generator 1 sends in the present embodiment and the axis for the treatment of gaging hole.
Therefore, the laser from laser generator 1 sends can not shine directly into 3 li in CCD camera, can not cause the damage of CCD camera 3.And when optical hole measuring device A is placed into when treating in the gaging hole, CCD camera 3 can photograph by laser beam at the image for the treatment of to form on the gaging hole hole wall.
In addition, in the present embodiment, it is fixed installation that laser generator 1 is installed with respect to first framework 51, but be not limited to this, laser generator 1 also can be installed to be the structure that can move vertically relative to first framework 51, this moving structure can adopt various known configurations, for example, rearward end at laser generator 1 is provided with thread spindle, in first framework 51, be provided with the revolving member that cooperates by motor-operated and above-mentioned thread spindle, and, on the side surface of laser generator 1, be provided with projection or groove vertically, on part corresponding with it on first framework 51, groove or projection are set, as guiding mechanism,, rotate by above-mentioned motor drives revolving member by this guiding mechanism, utilize cooperating of revolving member and above-mentioned thread spindle, the rotation of motor is converted to moving axially of laser generator 1, thus, laser generator 1 is moved vertically with respect to first framework.In addition, do not limit especially, for example, thread spindle can be configured on first framework and revolving member is configured on the laser generator 1, like this, also can realize by turning to straight-line conversion with regard to the configuration mode of above-mentioned thread spindle and revolving member.Also not limiting especially with regard to guide frame, can be the cooperation of a groove and projection, also can be the cooperation of many grooves and projection, can also be other guide frame.Thus, can move vertically relative to first framework 51, can finely tune the position of laser generator 1 by making laser generator 1.In addition, can also between the laser generator 1 and first framework 51, dispose spacer, laser generator 1 is had level adjustment.
Relation between the CCD camera 3 and second framework 52, and the relation between the laser generator 1 and first framework 51 is similar, has same or analogous structure.Here just do not give unnecessary details.
By movably structure is set, this Laser Measuring aperture apparatus A can put into when treating gaging hole, situation in the viewport of limit, the position adjustment between laser generator 1 and the CCD camera 3 is carried out on the limit.
In addition, it is the annular laser generator that laser generator 1 is not limited to, and it can be the laser generator that sends one light beam, at this moment, can realize measurement to hole wall by rotating whole device.In addition, when use can be sent the laser generator of one light beam, the shape of the 3rd framework just was not limited to tubular, and it can be other different shape.
In addition, what optical take-up apparatus of the present invention was selected for use is the CCD camera, but is not limited to this, and it also can select CMOS camera or other optical take-up apparatus for use, so long as can pick up the device of the information of the laser that hole wall reflects, all is applicable to the present invention.
In addition, the 3rd framework of the present invention is transparent glass article, but is not limited to this, and it also can be transparent resin product.In addition, the 3rd framework can also be opaque, but along circumferentially being provided with one or more slotted holes that extend vertically, the laser that laser generator sends shines hole wall by this slotted hole, by making the relative hole wall rotation of the 3rd framework, obtain the circumferential information in edge of hole wall.
(embodiment 2)
The diagrammatic cross-section of the optical hole measuring device of Fig. 3 embodiment of the present invention 2, this section is through the device central axis.Fig. 4 is the principle of work synoptic diagram of the optical hole measuring device of embodiment of the present invention 2.
As shown in Figure 3, Figure 4, the reflective mirror 2 as reflective member is installed on the 3rd framework 53, has light-reflecting portion on this reflective mirror 2.The optical hole measuring device A of present embodiment
0In, laser generator 100 is different with embodiment 1, and therefore other structure can, omit the explanation to other parts with reference to above-mentioned embodiment.
In the present embodiment, reflective mirror 2 is to be cone shape entity component, this reflective mirror 2 is used to reflect the laser beam of being sent by laser generator 100, therefore, the cone angle of this reflective mirror should be greater than 0 °, in addition, to treat on the gaging hole inwall that formed hot spot (figure) is difficult for taken by CCD camera 3 owing to do not wish to shine through reflective mirror 2 laser light reflected bundles, therefore, preferably the cone angle of this reflective mirror is less than or equal to 90 °, for example 60 °.Thus, can change the path of laser beam more effectively, and then, optical hole measuring device A shortened
0Whole axial length.In the present embodiment, the cone angle of reflective mirror 2 is 90 °.
In addition, above-mentioned reflective mirror 2 is to be cone shape entity component, but is not limited to this, gets final product so long as can play the effect of the laser beam that reflection sent by laser generator 100.For example, it can be the hollow unit of shape with side surface of circular cone or round platform, and utilizes this face that is circular cone or round table-like side surface, the laser beam that reflection is sent by laser generator 100.
For the structure that reflective mirror 2 is installed on the 3rd framework 53, as shown in Figure 4, the inwall of the 3rd framework 53 is provided with installation clip K, with reflective mirror 2 to be installed in the 3rd framework 53 with the coaxial mode of the 3rd framework 53.But be not limited to this,, all be applicable to the present invention so long as reflective mirror 2 can be installed on the various mounting meanss of the 3rd framework 53.
In the present embodiment, therefore the reflective mirror 2 owing to having used as reflective member, can change the light path of the laser beam of being sent by laser generator 100, thereby, can dwindle optical hole measuring device A
0Whole axial length.In addition, requirement can also be reduced, the less laser generator of firing angle can be selected laser generator.For example, formed angle is 11.4 ° between the laser that sends of employed in the present embodiment laser generator 100 and the axis for the treatment of gaging hole.
(principle of work)
Below, be illustrated with regard to the principle of work of this optical hole measuring device.
As shown in Figure 4, size according to the diameter for the treatment of gaging hole, position between laser generator 100 (light emitting source), reflective mirror 2 (reflective member) and CCD camera 3 (optical take-up apparatus) relation is adjusted, after adjustment is finished, optical hole measuring device put into treat gaging hole.And make laser generator 100 luminous.
The laser beam that laser generator 100 is sent after reflective mirror 2 reflections, shines and treats on the gaging hole hole wall, forms a three-dimensional curve.
When adjusting outside the hole, having the relation between laser generator 100, reflective mirror 2 and the CCD camera 3 is not very suitable situation,, has the situation that can not pick up above-mentioned three-dimensional curve fully by CCD camera 3 that is.At this moment, can be with whole optical hole measuring device A
0From treat gaging hole, take out, above-mentioned two relationships between components are adjusted, and then the photoelectricity hole measuring device put into treat gaging hole.
In addition, when laser generator 100 or CCD camera 3 can be mobile, can observe three-dimensional curve in the limit, the limit is adjusted the position of CCD camera 3 or laser generator 100.
In addition, when reflective mirror not being set on whole optical hole measuring device A, as shown in Figure 2, the laser beam of being sent by laser generator 1 directly shines to be treated on the gaging hole inwall, forms a three-dimensional curve.Then, directly pick up by this laser beam at the three-dimensional curve for the treatment of to form on the gaging hole inwall by CCD camera 3.In addition, also can carry out moving of laser generator 1 or CCD camera 3 this moment.
In addition, when the laser that laser generator sent is not loop laser, for example, when the laser that is sent is beam of laser, at this moment, can obtain a three-dimensional curve by rotary laser generator integral body.In addition, if when the 3rd framework 53 is the parts of whole light-permeable, also rotary laser generator only is because therefore such structure can, just repeat no more here by various existing means realizations.
Then, the three-dimensional curve that is obtained by CCD camera 3 is handled.
Claims (10)
1. an optical hole measuring device is characterized in that,
Have the LASER Light Source and the optical take-up apparatus that are used to send laser of configuration in opposite directions, described optical take-up apparatus is used to receive the light from described LASER Light Source by surface reflection to be measured.
2. optical hole measuring device as claimed in claim 1 is characterized in that,
Described LASER Light Source is the annular laser generator.
3. optical hole measuring device as claimed in claim 2 is characterized in that,
The laser that described LASER Light Source is sent and treat between the axis of gaging hole that formed angle is for more than or equal to 20 ° and less than 90 °.
4. optical hole measuring device as claimed in claim 2 is characterized in that, the coaxial setting of described LASER Light Source and optical take-up apparatus.
5. optical hole measuring device as claimed in claim 1 is characterized in that,
Also have reflective member, it is provided between described LASER Light Source and the optical take-up apparatus, is used to reflect the laser beam of sending from LASER Light Source.
6. optical hole measuring device as claimed in claim 5 is characterized in that,
Described reflective member has reflecting part towards LASER Light Source one side, and this reflecting part is the side surface shape of circular cone or round platform, and along with away from LASER Light Source, its diameter becomes greatly gradually, and, itself and LASER Light Source and the coaxial setting of optical take-up apparatus.
7. optical hole measuring device as claimed in claim 6 is characterized in that,
The coning angle of described reflective member is greater than 0 ° and is less than or equal to 90 °.
8. as claim 5 or 6 described optical hole measuring devices, it is characterized in that,
The laser that described LASER Light Source is sent and treat between the axis of gaging hole that formed angle is for greater than 0 ° and less than 90 °.
9. optical hole measuring device as claimed in claim 7 is characterized in that,
The laser that described LASER Light Source is sent and treat between the axis of gaging hole that formed angle is for greater than 0 ° and less than 45 °.
10. optical hole measuring device as claimed in claim 1 is characterized in that,
Also have adjusting mechanism, be used to adjust the distance between described light emitting source and described optical take-up apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101428613A CN101109622A (en) | 2007-08-01 | 2007-08-01 | Optical hole measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101428613A CN101109622A (en) | 2007-08-01 | 2007-08-01 | Optical hole measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101109622A true CN101109622A (en) | 2008-01-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101428613A Pending CN101109622A (en) | 2007-08-01 | 2007-08-01 | Optical hole measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101109622A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106767507A (en) * | 2016-12-22 | 2017-05-31 | 深圳市宇顺电子股份有限公司 | A kind of detection means and detection method of watch crystal circular port |
| CN107300366A (en) * | 2017-08-25 | 2017-10-27 | 中国工程物理研究院核物理与化学研究所 | A kind of hole centering detection means |
-
2007
- 2007-08-01 CN CNA2007101428613A patent/CN101109622A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106767507A (en) * | 2016-12-22 | 2017-05-31 | 深圳市宇顺电子股份有限公司 | A kind of detection means and detection method of watch crystal circular port |
| CN107300366A (en) * | 2017-08-25 | 2017-10-27 | 中国工程物理研究院核物理与化学研究所 | A kind of hole centering detection means |
| CN107300366B (en) * | 2017-08-25 | 2023-06-27 | 中国工程物理研究院核物理与化学研究所 | Centering detection device for hole |
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