CN101566462A - Measuring method of virtual clamp - Google Patents
Measuring method of virtual clamp Download PDFInfo
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- CN101566462A CN101566462A CNA2009100399608A CN200910039960A CN101566462A CN 101566462 A CN101566462 A CN 101566462A CN A2009100399608 A CNA2009100399608 A CN A2009100399608A CN 200910039960 A CN200910039960 A CN 200910039960A CN 101566462 A CN101566462 A CN 101566462A
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Abstract
The invention relates to the technical field of measurement, in particular to a measuring method of a photoelectric instrument. The method comprises the following steps of: 1) putting one of the working pieces on a working platform, fixing, then using a camera to capture two lines on the working piece randomly, inputting the two lines into a computer, and constructing a reference line on a measuring plane of the computer so as to form a virtual clamp; 2) putting another measured working piece on the working platform, using the reference line on the formed measuring plane to align a corresponding line of the working piece, and forming upper clamping of the virtual clamp by the corresponding movement and/or rotation of the reference line on the measuring plane; and 3) using the position relation of a virtual focus and the reference line of a measuring lens, moving and capturing the points and lines of the working piece and then measurement can be carried out. The invention has convenient operation, fast measuring speed and high accuracy, reduces error measurement, improves measurement efficiency, simultaneously reduces the influence of the clamp on the working platform to the working piece, has no high requirements to the positioning of the working piece on the working platform and reduces mechanical error.
Description
Technical field:
The present invention relates to field of measuring technique, refer in particular to a kind of measuring method of photoelectric instrument.
Background technology:
Along with development of science and technology, the precision positioning measurement has been proposed more and more higher requirement, thereby traditional vernier caliper or spiral measuring instrument are difficult to satisfy measurement requirement.Photoelectric measurement appears subsequently, utilizing image to seize device (as CCD) is electronic signal with the video conversion of measured object, electronic signal is delivered to computer again, picture processing chip by computer is shown enlarged in image on the display, utilize corresponding seizure of computer three-dimensional coordinate to measure again, this mode can reduce measuring error, promotes measuring accuracy.But existing photoelectric measurement instrument, mainly be to move by the measurement camera lens to catch measurement, owing to lack mobile guide, often occur grasping less than or grab wrong phenomenon, especially position and lean on nearerly each other or some position when being in the edge of work, camera lens is difficult to accurately seizure, make to measure and seem comparatively bothersome, also very difficult moving lens exactly puts in place, greatly influences efficiency of measurement, brings inconvenience to measurement.
Summary of the invention:
The object of the present invention is to provide a kind of measuring method of virtual clamp, it is easy to operate, and measurement is accurate, speed is fast.
For achieving the above object, the present invention adopts following technical scheme to realize:
The measuring method of virtual clamp comprises the steps:
1), one of them workpiece is put worktable, utilize two lines on any grabbing workpiece of camera lens after fixing, the input computer constitutes the datum line on the computer measurement plane, promptly forms a virtual clamp;
2), another measured workpiece is put worktable, remove to aim at homologous lines on this workpiece with the datum line on the established measurement plane, at this moment the datum line on the measurement plane is done and is correspondingly moved and/or rotate, and forms the upper clamping of virtual clamp;
3), position that utilize to measure the virtual focus point of camera lens on measurement plane and datum line concerns that point or line on the mobile grabbing workpiece can be measured.
Measuring method provided by the present invention is to be to construct earlier datum line on measurement plane, with corresponding solid line on this datum line alignment pieces, clamp workpiece, like this, workpiece is relative fixed in the coordinate system of measurement plane, and then the virtual focus point of camera lens on measurement plane and the position relation of datum line are measured in utilization, point or line on the mobile grabbing workpiece, the accuracy height that moves and catch reduces mistake and surveys, and promotes measuring speed and efficient, also reduce simultaneously on the worktable anchor clamps to the influence of workpiece, not high to workpiece positioning requirements on worktable, handled easily reduces machine error.
The present invention measures as face profile applicable to plane, measurement in space, and concentricity is measured, three-dimensional inclined-plane and cambered surface measurement etc., and wide application effectively promotes the development of measuring technique.
Embodiment:
Virtual clamp measuring method provided by the invention comprises the steps:
1), one of them workpiece is put worktable, utilize two lines on any grabbing workpiece of camera lens after fixing, the input computer constitutes the datum line on the computer measurement plane, promptly forms a virtual clamp;
2), another measured workpiece is put worktable, remove to aim at homologous lines on this workpiece with the datum line on the established measurement plane, at this moment the datum line on the measurement plane is done and is correspondingly moved and/or rotate, and forms the upper clamping of virtual clamp;
3), position that utilize to measure the virtual focus point of camera lens on measurement plane and datum line concerns that point or line on the mobile grabbing workpiece can be measured.
During enforcement, on measurement plane, constructed datum line before this, this datum line is to obtain by two lines on any grabbing workpiece of camera lens, during operation one of them workpiece is put worktable, utilize two lines on any grabbing workpiece of camera lens after fixing, as two sidelines or center line etc., the input computer, constitute the datum line on the computer measurement plane, promptly form a virtual clamp; Aim at corresponding solid line on another measured workpiece with this datum line then, at this moment the datum line on the measurement plane is done corresponding moving and/or rotation, can control by system program, forms the upper clamping of virtual clamp; Like this, workpiece is relative fixed in the coordinate system of measurement plane, with the workpiece calibration position basically identical of determining before.And then the virtual focus point of camera lens on measurement plane and the position relation of datum line are measured in utilization, point or line on the mobile grabbing workpiece, no matter the accuracy height that moves and catch is medium line, position, limit, all is easy to grasp, and matching computer is measured, reducing mistake surveys, promote measuring speed and efficient, the present invention can reduce on the worktable anchor clamps to the influence of workpiece calibration, and is not high to workpiece positioning requirements on worktable, handled easily reduces machine error.
Claims (1)
1, the measuring method of virtual clamp, it cooperates photoelectric measurement instrument to carry out, and it is characterized in that: comprise the steps:
1), one of them workpiece is put worktable, utilize two lines on any grabbing workpiece of camera lens after fixing, the input computer constitutes the datum line on the computer measurement plane, promptly forms a virtual clamp;
2), another measured workpiece is put worktable, remove to aim at homologous lines on this workpiece with the datum line on the established measurement plane, at this moment the datum line on the measurement plane is done and is correspondingly moved and/or rotate, and forms the upper clamping of virtual clamp;
3), position that utilize to measure the virtual focus point of camera lens on measurement plane and datum line concerns that point or line on the mobile grabbing workpiece can be measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100399608A CN101566462A (en) | 2009-05-31 | 2009-05-31 | Measuring method of virtual clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100399608A CN101566462A (en) | 2009-05-31 | 2009-05-31 | Measuring method of virtual clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101566462A true CN101566462A (en) | 2009-10-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100399608A Pending CN101566462A (en) | 2009-05-31 | 2009-05-31 | Measuring method of virtual clamp |
Country Status (1)
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| CN (1) | CN101566462A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104316001A (en) * | 2014-10-08 | 2015-01-28 | 南京航空航天大学 | Non-reference hole coaxiality error measurement system and measurement method thereof |
| CN104748682A (en) * | 2015-05-08 | 2015-07-01 | 沈阳飞机工业（集团）有限公司 | Calibration method of measuring instrument for laser two-dimensional sample plate |
| CN109079797A (en) * | 2018-10-15 | 2018-12-25 | 上海电气集团股份有限公司 | The distance measurement method and system and Mechanical arm control method and system of virtual clamp |
| CN110196568A (en) * | 2018-02-26 | 2019-09-03 | 宝山钢铁股份有限公司 | The method of driving crawl slab |
-
2009
- 2009-05-31 CN CNA2009100399608A patent/CN101566462A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104316001A (en) * | 2014-10-08 | 2015-01-28 | 南京航空航天大学 | Non-reference hole coaxiality error measurement system and measurement method thereof |
| CN104316001B (en) * | 2014-10-08 | 2017-02-01 | 南京航空航天大学 | Non-reference hole coaxiality error measurement system and measurement method thereof |
| CN104748682A (en) * | 2015-05-08 | 2015-07-01 | 沈阳飞机工业（集团）有限公司 | Calibration method of measuring instrument for laser two-dimensional sample plate |
| CN110196568A (en) * | 2018-02-26 | 2019-09-03 | 宝山钢铁股份有限公司 | The method of driving crawl slab |
| CN110196568B (en) * | 2018-02-26 | 2022-06-24 | 宝山钢铁股份有限公司 | Method for grabbing plate blank by travelling crane |
| CN109079797A (en) * | 2018-10-15 | 2018-12-25 | 上海电气集团股份有限公司 | The distance measurement method and system and Mechanical arm control method and system of virtual clamp |
| CN109079797B (en) * | 2018-10-15 | 2021-09-24 | 上海电气集团股份有限公司 | Distance measuring method and system of virtual clamp and mechanical arm control method and system |
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Open date: 20091028 |