CN2525471Y - Multiple structure light light plane aligning indicator - Google Patents
Multiple structure light light plane aligning indicator Download PDFInfo
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- CN2525471Y CN2525471Y CN 02201155 CN02201155U CN2525471Y CN 2525471 Y CN2525471 Y CN 2525471Y CN 02201155 CN02201155 CN 02201155 CN 02201155 U CN02201155 U CN 02201155U CN 2525471 Y CN2525471 Y CN 2525471Y
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- reflecting glass
- aligning
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Abstract
The utility model relates to a multiple structure light light plane aligning indicator for detecting straightness, coaxiality and other form and position errors of a cylinder class workpiece in a structure-light vision detecting system. The aligning indicator consists of an aligning device, a CCD vidicon and a computer; the aligning device consists of a base, splints, translucent and semi-reflecting glass and bolts; two splints are placed upright on two ends of the base and clamp two pieces of translucent and semi-reflecting glass, and the translucent and semi-reflecting glass is fixed by bolts; the space between two splints is 18 cm. The utility model has simple structure, effectively increased quantity of ellipse fitting data, improved ellipse fitting precision, simple and reasonable structure design, convenient use and operation and high aligning precision; the adopted principles are simple and easy to understand.
Description
Technical field: the utility model relates to and a kind ofly is used for the multi-structured light optical plane that the structured light vision detection system detects morpheme errors such as the linearity of right cylinder class workpiece and right alignment and aims at indicating device.
Background technology: in the machining manufacturing industry, some column workpieces need be measured evaluation to morpheme errors such as its linearity, right alignmenies usually as long steel pipe, long bar etc.In this type of form and position error measurement, structured light three-dimensional vision detects and has broad application prospects, and its maximum characteristics are noncontact, measurement range is big, speed is fast.Generally adopt line structure optical sensor in the measurement, and arrange a plurality of line structure optical sensors along the axis direction of column workpiece, intersect on the structured light plane of sensor projects and column workpiece surface, forms a plurality of structural light strip elliptic arcs at surface of the work.Point on these striation elliptic arcs is carried out ellipse fitting, just can obtain the centre coordinate in workpiece a plurality of cross sections vertically, and then can realize linearity, the isoparametric evaluation of right alignment.Owing to be subjected to the restriction of factors such as visual field of structure, the CCD of line structure optical sensor, the striation elliptic arc arc length of formation is often shorter, only accounts for the sub-fraction of its place elliptic wheel profile yet regrettably.And in actual measurement, inevitably comprised various noises in the measurement data, this carries out the requirement that precision that ellipse fitting carries out centralized positioning can not satisfy measuring accuracy with regard to make utilizing short striation elliptic arc.The sensor groups of utilizing a plurality of sensors to constitute is come the same cross section of measuring workpieces simultaneously, can increase the length of striation elliptic arc and the data volume of participation ellipse fitting, guaranteeing under the prerequisite of coplane that utilizing a plurality of striation elliptic arcs to carry out the precision of ellipse fitting must be than high many of the precision of only utilizing a striation elliptic arc.But, but be difficult in the actual measurement guarantee that a plurality of striation elliptic arcs of same sensor groups are coplanes.Usually, the disposal route of people in actual measurement is: take a blank sheet of paper, place two different positions, observe the striation that a plurality of structured lights plane that same sensor groups sends forms with eyes on blank sheet of paper and whether overlap, determine their whether coplanes with this in these two different positions.The accuracy of this disposal route obviously is very low, can introduce considerable error in the measurement result of reality, does not also just reach the original intention that improves the ellipse fitting precision.
Summary of the invention: for the coplane of a plurality of structured lights plane degree of precision of realizing same line structure optical sensor group, thereby be implemented in a plurality of structural light strip coplanes that workpiece shows formation, the purpose of this utility model provides a kind of multi-structured light optical plane simple in structure, easy to use, that alignment precision is high and aims at indicating device, solve the problem of a plurality of structured lights plane degree of precision coplane of same line structure optical sensor group, give security for the structured light three-dimensional vision of realizing high-precision workpiece morpheme error detects.Technical solution of the present utility model is that this is aimed at indicating device and is made up of alignment device 1, ccd video camera 2 and computing machine 3; Alignment device 1 is made up of base, clamping plate, semi-transparent semi-reflecting glass and screw, and two clamping plates stands on the two ends of base, two blocks of semi-transparent semi-reflecting glass of clamping, and with screw semi-transparent semi-reflecting glass is fixed, the spacing of two clamping plates is 18cm.The utility model is simple in structure, and the structural design advantages of simple is used easy to operate; The principle that is adopted is easily understood, the alignment precision height.
Description of drawings:
Fig. 1 utilizes line structure optical sensor to measuring the schematic diagram of steel pipe linearity;
Fig. 2 is a structural representation of the present utility model;
Fig. 3 is the utility model alignment device synoptic diagram.
Two line structure optical sensors 4 in the structured light vision detection system, it is right to constitute a survey sensor.Structured light optical plane that is sent by optical sensor 4 and alignment device 1 intersect and form structural light strip pattern 5.Ccd video camera 2 is used for obtaining the image information of the structural light strip pattern 5 on the alignment device.Computing machine 3 is used for handling the image that ccd video camera 2 obtains, and whether two structured light optical planes that calculating and pilot light sensor 4 are sent have aimed at coincidence.
The principle design that alignment device 1 is based on two these planes of the unique decision of non-coincidence straight line in the same plane forms.Clamping plate 8 are respectively established at the two ends of base 9, by screw retention on base 9, semi-transparent semi-reflecting glass 7 in clamping in the clamping plate 8, and fixing with screw 6, be used for the structured light vision detection system in the structured light optical plane that sends of optical sensor 4 intersect and form the straight line striation.The thickness of two semi-transparent semi-reflecting glass is less than 4mm, and the error that makes refraction owing to light cause can be ignored.At a distance of 18cm, guaranteeing have under the prerequisite of higher alignment precision between them, making the whole small and exquisite of alignment device, so that carry and use.
Adjust the position of line structure optical sensor 4 and the position of alignment device 1, make structured light optical plane that structured light sensor is sent and two semi-transparent semi-reflecting glass 7 of alignment device 1 all intersect, form four linear structure light striation patterns 5.Adjust the position of ccd video camera 2, make two semi-transparent semi-reflecting glass of alignment device 1 be in fully within its visual field, and can become clearly as.Article four, in the structural light strip pattern 5, being in a slice semi-transparent semi-reflecting two on glass is one group, totally two groups.When these two groups of structure light straight-line striation patterns 5 ccd video camera as the plane on imaging when overlapping simultaneously respectively, two structured light optical planes that this moment, explanation was sent by two line structure optical sensors 4 overlap in the space, promptly aim at.
Claims (2)
1. aim at indicating device by alignment device, video camera, computing machine, the multi-structured light optical plane formed for one kind, it is characterized in that, alignment device is made up of base, clamping plate, semi-transparent semi-reflecting glass and screw, two clamping plates stands on the two ends of base, two blocks of semi-transparent semi-reflecting glass of clamping, and with screw semi-transparent semi-reflecting glass is fixed.
2. multi-structured light optical plane according to claim 1 is aimed at indicating device, it is characterized in that the spacing of two clamping plates is 18cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02201155 CN2525471Y (en) | 2002-01-24 | 2002-01-24 | Multiple structure light light plane aligning indicator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02201155 CN2525471Y (en) | 2002-01-24 | 2002-01-24 | Multiple structure light light plane aligning indicator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2525471Y true CN2525471Y (en) | 2002-12-11 |
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ID=33684081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02201155 Expired - Fee Related CN2525471Y (en) | 2002-01-24 | 2002-01-24 | Multiple structure light light plane aligning indicator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2525471Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110455225A (en) * | 2019-08-22 | 2019-11-15 | 吉林大学 | Rectangle splined spindle concentricity and key position degree measurement method based on structure light vision |
| CN112775637A (en) * | 2020-12-29 | 2021-05-11 | 芜湖英视迈智能科技有限公司 | Large-scale part boxing positioning and assembling device and positioning and assembling method thereof |
-
2002
- 2002-01-24 CN CN 02201155 patent/CN2525471Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110455225A (en) * | 2019-08-22 | 2019-11-15 | 吉林大学 | Rectangle splined spindle concentricity and key position degree measurement method based on structure light vision |
| CN112775637A (en) * | 2020-12-29 | 2021-05-11 | 芜湖英视迈智能科技有限公司 | Large-scale part boxing positioning and assembling device and positioning and assembling method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |