CN103076038A - Standard device for calibrating three-dimensional non-contact measurement system - Google Patents
Standard device for calibrating three-dimensional non-contact measurement system Download PDFInfo
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- CN103076038A CN103076038A CN2013100431582A CN201310043158A CN103076038A CN 103076038 A CN103076038 A CN 103076038A CN 2013100431582 A CN2013100431582 A CN 2013100431582A CN 201310043158 A CN201310043158 A CN 201310043158A CN 103076038 A CN103076038 A CN 103076038A
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Abstract
The invention relates to the technical field of transmission of measuring and testing values, and particularly relates to a standard device for calibrating a three-dimensional non-contact measurement system. Two ends of a measuring rod of the standard device are respectively connected with a standard ball. Because of the technical scheme, the standard balls and ball supports form straight lines vertical to the measuring rod, the standard balls can be measured completely by the three-dimensional non-contact measurement system in a measuring process, the surfaces of the standard balls do not reflect light, the measuring rod is manufactured from a material with small expansion coefficient without being influenced by length change due to expansion caused by heat and contraction caused by cold; and the standard device can adapt to various different testing requirements and is used for accurately detecting measurement errors and measurement uncertainty of the three-dimensional non-contact measurement system.
Description
Technical field
Patent of the present invention relates to metrology and measurement transmission of quantity value technical field, especially relates to a kind of standard set-up for the 3-D Non-touched Measurement System calibration.
Background technology
At present, still do not have reliable calibration criterion device for the detection of 3 D non-contacting type measuring system and calibration, the production firm of 3 D non-contacting type measuring system all calibrates with the standard set-up that oneself is developed.The standard ball of these standard set-ups can't be by complete measurement, and surface reflection light can cause interference, and tested length is acted upon by temperature changes, thereby can't obtain accurately measuring error and the uncertainty of measurement of 3-D Non-touched Measurement System.
Summary of the invention
The 3 D non-contacting type measuring technique is an emerging measuring technique, the various technology such as light harvesting, machinery, electronics, from the conventional metered dose technology and through accurate sensing process integration and the various modern high-tech means is integrated grows up.As emerging non-contact measuring technology, three-dimensional measurement is because its efficient is high, and sweep limit is wide, more and more is applied in Quick Measurement and the reverse-engineering.Follow a kind of so emerging measuring technique, it is particularly necessary that the accuracy of its magnitude tracing seems, calibration operation also need need to be resolved hurrily.Technical matters to be solved by this invention provides the standard set-up that is used for the 3-D Non-touched Measurement System calibration of the defectives such as a kind of standard ball that overcomes prior art can't be disturbed by perfect measurement, surface reflection, environmental impact is large.The technical scheme that the present invention solves its technical matters employing is: a kind of standard set-up for the 3-D Non-touched Measurement System calibration, its measuring stick two ends are the connection standard ball respectively.Technical matters to be solved by this invention also can further be solved by following technical solution: the two ends of measuring stick are respectively through web member, ball support and connection standard ball; Standard ball is the black matt pottery.The black matt pottery that standard ball among the present invention is sold by Shenzhen hawk flag Industrial Co., Ltd. is made, and the little eastern beautiful 3k carbon fiber of expansion coefficient that measuring stick is sold by the clear industrial corporation of monarch is made.The present invention is owing to adopting technique scheme, so that supporting, standard ball and ball consist of straight line perpendicular to measuring stick, can be by the complete measurement of 3 D non-contacting type measuring system at measuring process Plays ball, the standard ball surface is not reflective, measuring stick adopts the little material manufacturing of expansion coefficient, the impact of the length variations that causes of not expanded with heat and contract with cold can adapt to various test request, detects accurately measuring error and the uncertainty of measurement of 3-D Non-touched Measurement System.
Description of drawings
Below in conjunction with accompanying drawing and specific embodiments of the invention the present invention is described in further detail.
Fig. 1 is that standard ball of the present invention connects the structural representation that ball supports.
Fig. 2 is the structural representation of measuring stick of the present invention.
Fig. 3 is the structural representation of web member of the present invention.
Fig. 4 is structural representation of the present invention.
Embodiment
With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, the diameter of standard ball 1 is selected according to different detected space, the minimum that is about tested 3-D Non-touched Measurement System measurement space is measured 1/5 of length, the shape error of standard ball 1 is 0.2 μ m-1.0 μ m, there are 5 gluing connections of back shaft in a circular hole and the ball support 2 below of standard ball 1, ball supports the external thread 6 of 2 belows and is connected with internal thread 7 on the web member 4, the centre of sphere of measuring stick 3 is 200mm-2300mm apart from scope, the internal thread 10 that bolt 8 connects on the measuring stick 3 through the counterbore 9 on the web member 4 respectively.
The present embodiment forms one group of measurement standard by 5 the present invention at least.The diverse location that at first the different the present invention of centre of sphere distance degree is placed in the measurement space scope of the 2000mm * 2000mm of 3 D non-contacting type measuring system * 1500mm is measured.Form in one group of measurement standard 5 the present invention, according to the standard centre of sphere of bee-line apart from need less than 3/10ths of the bee-line of measurement space, the standard centre of sphere of longest distance is apart from the three-dimensional catercorner length that needs at least 2/3rds measurement space, the present embodiment adopts 200mm, 500mm, 1000mm, 1500mm, the centre of sphere distance of five dimensions length of 2000mm.The present invention is put 7 different locus to measure, each position is measured respectively 3 times, obtain 35 groups of 105 (5 * 7 * 3=105) measured values, at last measured value and the standard value of the present invention that obtains compared, can obtain the measuring error of 3 D non-contacting type measuring system, and evaluation is calibrated the uncertainty of measurement of 3 D non-contacting type measuring system.
Claims (3)
1. a standard set-up that is used for the 3-D Non-touched Measurement System calibration is characterized in that: its measuring stick (3) two ends difference connection standard ball (1).
2. according to right 1 described a kind of standard set-up for the 3-D Non-touched Measurement System calibration, it is characterized in that: (2) connection standard ball (1) is supported through web member (4), ball respectively in the two ends of measuring stick (3).
3. according to right 1 or 2 described a kind of standard set-ups for the 3-D Non-touched Measurement System calibration, it is characterized in that: standard ball (1) is the black matt pottery.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013100431582A CN103076038A (en) | 2013-02-04 | 2013-02-04 | Standard device for calibrating three-dimensional non-contact measurement system |
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| CN2013100431582A CN103076038A (en) | 2013-02-04 | 2013-02-04 | Standard device for calibrating three-dimensional non-contact measurement system |
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Cited By (4)
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|---|---|---|---|---|
| CN106871949A (en) * | 2017-04-17 | 2017-06-20 | 重庆市计量质量检测研究院 | For many ball plate standards and joint error detection method of multi-sensor measurement system |
| CN107014275A (en) * | 2017-04-11 | 2017-08-04 | 合肥工业大学 | A kind of centre of sphere distance meter of space two and its measuring method |
| CN111693011A (en) * | 2020-06-02 | 2020-09-22 | 上海交通大学 | Three-dimensional self-calibration device and method based on composite pose |
| CN116973885A (en) * | 2023-09-22 | 2023-10-31 | 巨硕精密机械(常熟)有限公司 | Carbon fiber reference system for laser radar |
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| JP2007078635A (en) * | 2005-09-16 | 2007-03-29 | Mitsutoyo Corp | Calibration fixture, and offset calculation method of image measuring machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107014275A (en) * | 2017-04-11 | 2017-08-04 | 合肥工业大学 | A kind of centre of sphere distance meter of space two and its measuring method |
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| CN106871949A (en) * | 2017-04-17 | 2017-06-20 | 重庆市计量质量检测研究院 | For many ball plate standards and joint error detection method of multi-sensor measurement system |
| CN111693011A (en) * | 2020-06-02 | 2020-09-22 | 上海交通大学 | Three-dimensional self-calibration device and method based on composite pose |
| CN116973885A (en) * | 2023-09-22 | 2023-10-31 | 巨硕精密机械(常熟)有限公司 | Carbon fiber reference system for laser radar |
| CN116973885B (en) * | 2023-09-22 | 2024-01-16 | 巨硕精密机械(常熟)有限公司 | Carbon fiber reference system for laser radar |
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Application publication date: 20130501 |