CN104061856A - Moving station accuracy checking and compensating method for laser tracker - Google Patents
Moving station accuracy checking and compensating method for laser tracker Download PDFInfo
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- CN104061856A CN104061856A CN201410130923.9A CN201410130923A CN104061856A CN 104061856 A CN104061856 A CN 104061856A CN 201410130923 A CN201410130923 A CN 201410130923A CN 104061856 A CN104061856 A CN 104061856A
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Abstract
The invention discloses a moving station accuracy checking and compensating method. Instant correction is performed on the laser tracker, and the rotating angle accuracy of a coded disc is corrected, thereby reducing error during multi-station measurement. The method comprises a moving station accuracy checking step and a moving station accuracy compensating method. According to the moving station accuracy checking and compensating method for the laser tracker, the measuring characteristic of a large-sized field tool is simulated, thereby solving the problem of difficulty in finding the introduced measuring error during multi-station measurement of the tool, correcting compensation calibration, and avoiding error judgment of a measuring result.
Description
Technical field
The present invention relates to the on-the-spot test of measuring equipment and station transfer accuracy checking and the compensation method in calibration field, particularly laser tracker.
Background technology
In the process that laser tracker is measured main equipment and frock at the scene, often need repeatedly mobile erect-position, and carry out DATA REASONING and the collection of multi-angle multi-court position.In the time measuring, due to the impact of data point drift and laser tracker code-disc rotational angle precision, laser tracker is differentiated in the measuring accuracy of different erect-positions.Especially grow while measurement apart from wide-angle, more than cumulative errors can reach 0.20mm, and this error in measuring process extremely difficulty be found, concerning precision measurement, such error, by the erroneous judgement causing whole measurement result, makes product have great hidden danger of quality.Therefore, while measuring large-scale frock, need to check the station transfer measuring accuracy of laser tracker at the scene, after guaranteeing that station transfer is measured, the accuracy of data and reliability.
Summary of the invention
For overcoming laser tracker to the error in main equipment and the measurement of frock multi-angle multi-court position, the present invention proposes one on-the-spot station transfer accuracy checking and compensation method fast and effectively, laser tracker is revised immediately, and the error while reducing to measure, ensures the reliable of measurement data.
A kind of laser tracker station transfer accuracy checking and compensation method, comprise the following steps:
1) station transfer accuracy checking: two fixed targets at a distance of about 10m are set, laser tracker is placed on the straight line that two fixed targets are linked to be and away from two fixed targets, laser tracker is the distance value between forward sight (0 ° of position of laser tracker) and backsight (laser tracker rotates 180 ° of positions from 0 ° of position) orientation measurement two fixed targets respectively, and each direction is each to be measured three class values and records; Laser tracker is moved to two fixed target centre positions, and make laser tracker putting position and two fixed targets angled, distance value between forward sight and backsight orientation measurement two fixed targets respectively, each direction is also measured three class values, 12 groups of obtained distance values are compared, deduct minimum value with maximal value and be designated as station transfer accuracy checking error, in the time that error is in 10ppm, can think that station transfer precision is qualified.
2) station transfer accuracy compensation: when error exceedes 10ppm, laser tracker rectilinear direction, horizontal direction, vertical direction are compensated to calibration.Arrange 3 fixed targets contour with laser tracker point-blank, laser tracker is along straight line from backsight to forward sight, from nearby at a distance, measure the target on described 3 linear positions, measured value input is calculated to machine computer software and carry out rectilinear direction compensation; Around uniform 16 targets taking laser tracker as the center of circle of laser tracker, measure counterclockwise 16 target locations on circumference, measured value input is calculated to machine computer software and carry out horizontal direction compensation; 9 targets are set on the straight line perpendicular to ground, and laser tracker carries out target measurement successively from eminence to lower, measured value input is calculated to machine computer software and complete vertical direction compensation.
The feature that the present invention measures by simulated field main equipment and frock, proposes laser tracker station transfer accuracy checking method, can find fast that multi-court position is measured time, and the measuring error of introducing, and by the compensation to three directional datas, eliminated measuring error.
Below in conjunction with drawings and Examples, the present invention is described in further detail.
Brief description of the drawings
Fig. 1 is laser tracker schematic diagram, forward sight (0 ° of position of laser tracker) and backsight (laser tracker rotates 180 ° of positions from 0 ° of position)
Fig. 2 is laser tracker station transfer accuracy checking schematic diagram
Fig. 3 is rectilinear direction compensation schematic diagram
Fig. 4 is horizontal direction compensation schematic diagram
Fig. 5 is vertical direction compensation schematic diagram
Embodiment
In the time that measure field is carried out the measurement of multi-angle multi-court position with laser tracker, first carry out accuracy checking, its concrete grammar is shown in following steps.
1. laser tracker station transfer accuracy checking
Concrete steps: the good laser tracker of (1) connecting test, open Survey Software, complete instrument initialize routine; (2) two stable fixed targets are set, as shown in Figure 2, and tracker is placed on the straight line of two target link, and nearest target are greater than 2m place; (3) apparent direction is measured two fixed target point distance values in the past, records three groups of measurement results; (4) by laser tracker Rotate 180 °, i.e. rear apparent direction, the distance value of measurement 2 fixed target points, records three groups of measurement results; (5) laser tracker is moved to the middle position that approaches of 2 fixed target points, and have a certain degree with two impact points.(6) forward sight is measured the distance value of 2 fixed target points, records three groups of measurement results; (7), by laser tracker Rotate 180 °, rear apparent direction, measures two fixed target point distance values, records three groups of measurement results; (8) 12 groups of distance measure are compared, deduct minimum value with maximal value and be designated as station transfer accuracy checking error, check that error is qualified if error, in 10ppm, is thought, can proceed to measure.If check that error exceedes 10ppm, just need to carry out compensation for calibrating errors.
2. laser tracker accuracy calibration compensation
Concrete operation step: the good laser tracker of (1) connecting test, open calibration software, complete instrument initialize routine; (2), according to shown in Fig. 3, arrange 3 fixed target positions contour with laser tracker, near the about 0.4m of laser tracker near point target range instrument, far point target range instrument is greater than 7m, from backsight to forward sight, from nearby at a distance, measure 3 straight-line target positions; (3) according to shown in Fig. 4, on a circumference, be evenly arranged 16 point of fixity targets contour with laser tracker, and the about 2m of target range instrument, apparent direction starts in the past, by counterclockwise measuring respectively 16 target locations; (4) according to shown in Fig. 5, in the vertical direction, be evenly arranged 9 point of fixity target locations from height to low, 45 ° of pitching maximum angles, measure respectively 9 positions from top to bottom; (5) calculate the measurement data of 28 positions of survey by software, result of calculation is compensated in laser tracker system file, accomplish linear direction, horizontal direction, vertical direction compensation.
Claims (2)
1. laser tracker station transfer accuracy checking and a compensation method, is characterized in that comprising the following steps:
1) station transfer accuracy checking: two fixed targets at a distance of about 10m are set, laser tracker is placed on the straight line that two fixed targets are linked to be and away from two fixed targets, laser tracker is the distance value between forward sight (0 ° of position of laser tracker) and backsight (laser tracker rotates 180 ° of positions from 0 ° of position) orientation measurement two fixed targets respectively, and each direction is each to be measured three class values and records; Laser tracker is moved to two fixed target centre positions, and make laser tracker putting position and two fixed targets angled, distance value between forward sight and backsight orientation measurement two fixed targets respectively, each direction is also measured three class values, 12 groups of obtained distance values are compared, deduct minimum value with maximal value and be designated as station transfer accuracy checking error, in the time that error is in 10ppm, can think that station transfer precision is qualified;
2) station transfer accuracy compensation: when error exceedes 10ppm, laser tracker rectilinear direction, horizontal direction, vertical direction are compensated to calibration.
2. a kind of laser tracker station transfer accuracy checking and compensation method as claimed in claim 1, is characterized in that described step 2) station transfer accuracy compensation comprises the following steps:
1) rectilinear direction compensation: arrange 3 fixed targets contour with laser tracker point-blank, laser tracker is along straight line from backsight to forward sight, from nearby extremely at a distance, measure the target on described 3 linear positions, measured value input is calculated to machine computer software and carry out rectilinear direction compensation;
2) horizontal direction compensation: around uniform 16 targets taking laser tracker as the center of circle of laser tracker, measure counterclockwise 16 target locations on circumference, measured value input is calculated to machine computer software and carry out horizontal direction compensation;
3) vertical direction compensation: 9 targets are set on the straight line perpendicular to ground, and laser tracker carries out target measurement successively from eminence to lower, calculates machine computer software by measured value input and completes vertical direction compensation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410130923.9A CN104061856A (en) | 2014-04-02 | 2014-04-02 | Moving station accuracy checking and compensating method for laser tracker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410130923.9A CN104061856A (en) | 2014-04-02 | 2014-04-02 | Moving station accuracy checking and compensating method for laser tracker |
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| CN104061856A true CN104061856A (en) | 2014-09-24 |
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| CN201410130923.9A Pending CN104061856A (en) | 2014-04-02 | 2014-04-02 | Moving station accuracy checking and compensating method for laser tracker |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108007347A (en) * | 2017-12-10 | 2018-05-08 | 北京工业大学 | One kind is used for LaserTracer geometric error compensation methods |
| CN113048916A (en) * | 2021-03-16 | 2021-06-29 | 西安应用光学研究所 | Dynamic target simulation source for measuring tracking precision of photoelectric tracking and aiming instrument |
-
2014
- 2014-04-02 CN CN201410130923.9A patent/CN104061856A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108007347A (en) * | 2017-12-10 | 2018-05-08 | 北京工业大学 | One kind is used for LaserTracer geometric error compensation methods |
| CN113048916A (en) * | 2021-03-16 | 2021-06-29 | 西安应用光学研究所 | Dynamic target simulation source for measuring tracking precision of photoelectric tracking and aiming instrument |
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Application publication date: 20140924 |