CN108195317A - A kind of detection method of aircraft intake and exhaust grid cell rib thickness and the depth of parallelism - Google Patents
A kind of detection method of aircraft intake and exhaust grid cell rib thickness and the depth of parallelism Download PDFInfo
- Publication number
- CN108195317A CN108195317A CN201711347413.7A CN201711347413A CN108195317A CN 108195317 A CN108195317 A CN 108195317A CN 201711347413 A CN201711347413 A CN 201711347413A CN 108195317 A CN108195317 A CN 108195317A
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- Prior art keywords
- grid
- light source
- parallelism
- depth
- rib
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/06—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention belongs to aircaft configuration fields, are related to the detection method of a kind of aircraft intake and exhaust grid cell rib thickness and the depth of parallelism.Light source and focusing device, opposite side installation light sensation egative film are installed in the side of grid.Grid is adjusted, makes rib width direction parallel with axis, is projected with negative writing grid, the thickness and the depth of parallelism of the rib of grid part are obtained by the measurement to projection.This method has no effect to being detected grid, thus can realize and part noumenon is detected piece by piece, and accuracy in detection is high, and testing result is reliable, the rapidly and efficiently detection especially suitable for high-volume grid.
Description
Technical field
The invention belongs to aircaft configuration fields, are related to the inspection of a kind of aircraft intake and exhaust grid cell rib thickness and the depth of parallelism
Survey method.
Background technology
Aircraft intake and exhaust grid has strictly cell rib thickness and the depth of parallelism to meet its intake and exhaust and the performances such as stealthy
Requirement, if cell size cannot be excessive, minimum reaches 3mm × 3mm, and rib thickness is most thin for 0.5mm, in the inclination of external surface
15~90 ° of degree, as shown in Figure of description 2.More than feature cause grid rib thickness and the depth of parallelism can not by vernier caliper,
The survey tools such as micrometer caliper directly measure.
The measuring method generally used at present is to cut grid part, meets vernier caliper, micrometer caliper etc.
After the requirement of survey tool, rib thickness and the depth of parallelism are measured.This method belongs to damage type inspection, the part after measurement
It can not use, therefore installation part noumenon can not be detected, it can only be by the way of sampling observation.In addition, the cutting of part is not
Evitable to be deformed part, measurement result and part truth have deviation.Therefore conventional method and of high cost, effect
Rate is low, and accuracy is low.
Invention content
The purpose of the invention is to more convenient, simple, the higher detection grid cell rib thickness of precision and the depth of parallelism
And the one kind proposed is efficiently, suitable for the lossless detection method of high-volume grid.
The present invention technical solution be：A kind of detection side of aircraft intake and exhaust grid cell rib thickness and the depth of parallelism
Method includes the following steps：
Step 1：Light source 1 and focusing device 2 are installed in the side of grid 4；
Step 2：Light source 1 is focused into point light source 3 by focusing device 2；
Step 3：In the opposite side installation light sensation egative film 5 of grid 4；
Step 4：4 angles and positions of grid are adjusted, grid rib is made to be parallel to the vertical line of point light source 3 and egative film 5, grid muscle
Item forms image on egative film 5, judges the depth of parallelism of consecutive web by measuring the image of consecutive web；
Step 5：4 angle of grid is adjusted, grid rib is made to be parallel to the vertical line of point light source 3 and egative film 5, the shape on egative film 5
Into image, by measuring the thickness of rib image, the thickness of grid rib is calculated.
Above-mentioned light source 1 is infrared ray or visible light or ultraviolet ray.
Advantageous effect：It is of the invention compared with existing grid damage type detection method, the invention belongs to lossless detection method,
It having no effect to being detected grid, thus can realize and part noumenon is detected, the part after detection can be continuing with,
Reduce cost of parts；It being detected piece by piece in addition, the present invention can realize, and precision higher, testing result is more reliable, more efficient,
Suitable for high-volume grid efficient detection.
Description of the drawings
Fig. 1 is the structure diagram of the present invention；
Fig. 2 is cell structure schematic diagram.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings of the specification.
The detection method of a kind of aircraft intake and exhaust grid cell rib thickness and the depth of parallelism, as shown in Figure 1, including following step
Suddenly：
Step 1：Light source 1 and focusing device 2 are installed in the side of grid 4；
Step 2：Light source 1 is focused into point light source 3 by focusing device 2；
Step 3：In the opposite side installation light sensation egative film 5 of grid 4；
Step 4：4 angles and positions of grid are adjusted, grid rib is made to be parallel to the vertical line of point light source 3 and egative film 5, grid muscle
Item forms image on egative film 5, judges the depth of parallelism of consecutive web by measuring the depth of parallelism of consecutive web image；
Step 5：4 angle of grid is adjusted, grid rib is made to be parallel to the vertical line of point light source 3 and egative film 5, the shape on egative film 5
Into image, by measuring the thickness of rib image, the thickness of grid rib is calculated.
Above-mentioned light source 1 is infrared ray or visible light or ultraviolet ray.
Embodiment one measures the grid rib depth of parallelism：
Step 1：Light source 1 and focusing device 2 are positioned over 3 side of grid, light source is X ray；
Step 2：Light source 1 is focused into point light source 3 by focusing device 2；
Step 3：Egative film 5 is positioned over 4 opposite side of grid；
Step 4：4 angles and positions of grid are adjusted, grid rib is made to be parallel to the vertical line of point light source 3 and egative film 5, grid muscle
Item forms image on egative film 5, judges the depth of parallelism of consecutive web by measuring the depth of parallelism of consecutive web image.
Embodiment two measures grid rib thickness：
Step 1：Light source 1 and focusing device 2 are positioned over 4 side of grid, light source is infrared ray；
Step 2：Light source 1 is focused into point light source 3 by focusing device 2；
Step 3：Egative film 5 is positioned over 4 opposite side of grid, vertical range is the 2 of 4 vertical range of point light source 3 and grid
It~5 times, can specifically be adjusted as needed；
Step 4：4 angle of grid is adjusted, makes rib width direction parallel with axis, image is formed on egative film, pass through survey
The thickness of rib image is measured, rib image thickness is 4~10 times of rib actual (real) thickness, and grid rib can be calculated by calculating
Actual (real) thickness.
The present invention provides a kind of new method for the detection of cell structure cell rib thickness and the depth of parallelism, in grid zero
The side installation light source 1 and focusing device 2 of part 4, opposite side installation light sensation egative film 5, point light source 3, grid 4,5 three points into one of egative film
Axis is arranged.Grid is adjusted, makes rib width direction parallel with axis, is projected with negative writing grid, passes through the survey to projection
Amount obtains the thickness and the depth of parallelism of the rib of grid part.
Claims (4)
1. the detection method of a kind of aircraft intake and exhaust grid cell rib thickness and the depth of parallelism, it is characterised in that including following step
Suddenly：
Step 1：In the side of grid (4) installation light source (1) and focusing device (2)；
Step 2：In the opposite side installation light sensation egative film (5) of grid (4)；
Step 3：Light source (1) is focused into point light source (3) by focusing device (2), is adjusted grid (4) angles and positions, is made grid muscle
Item is parallel to the vertical line of point light source (3) and egative film (5), and grid rib forms image on egative film (5), by measuring consecutive web
Image judge the depth of parallelism of consecutive web；
Step 4：Grid (4) angle is adjusted, grid rib is made to be parallel to the vertical line of point light source (3) and egative film (5), in egative film (5)
Upper formation image by measuring the thickness of rib image, calculates the thickness of grid rib.
2. the detection method of aircraft intake and exhaust grid cell rib thickness according to claim 1 and the depth of parallelism, feature
It is：Focusing device (2), which focuses on light source (1), becomes point light source (3).
3. the detection method of aircraft intake and exhaust grid cell rib thickness according to claim 1 or 2 and the depth of parallelism, special
Sign is：Light source (1) is infrared ray or visible light or ultraviolet ray.
4. the detection method of aircraft intake and exhaust grid cell rib thickness according to claim 1 and the depth of parallelism, feature
It is：The vertical range of egative film (5) and grid (4) is 2~5 times of point light source (3) and grid (4) vertical range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711347413.7A CN108195317A (en) | 2017-12-15 | 2017-12-15 | A kind of detection method of aircraft intake and exhaust grid cell rib thickness and the depth of parallelism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711347413.7A CN108195317A (en) | 2017-12-15 | 2017-12-15 | A kind of detection method of aircraft intake and exhaust grid cell rib thickness and the depth of parallelism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108195317A true CN108195317A (en) | 2018-06-22 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711347413.7A Pending CN108195317A (en) | 2017-12-15 | 2017-12-15 | A kind of detection method of aircraft intake and exhaust grid cell rib thickness and the depth of parallelism |
Country Status (1)
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| CN (1) | CN108195317A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109900213A (en) * | 2019-03-18 | 2019-06-18 | 上海智觅智能科技有限公司 | A kind of sensor circuit detecting sun-proof frost thickness |
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| CN204881541U (en) * | 2015-05-27 | 2015-12-16 | 北京理工大学 | Hand -held type panel installation quality detector |
| CN107097009A (en) * | 2017-03-20 | 2017-08-29 | 多氟多（焦作）新能源科技有限公司 | Lithium battery production line and the conductive handle position finding and detection method of lug, welder |
| CN107202806A (en) * | 2017-07-13 | 2017-09-26 | 无锡鼎邦换热设备有限公司 | Air cooler bobbin carriage weld seam Non-Destructive Testing technique |
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2017
- 2017-12-15 CN CN201711347413.7A patent/CN108195317A/en active Pending
Patent Citations (12)
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| GB2199138A (en) * | 1986-12-05 | 1988-06-29 | Beta Instr Co | An optical measuring system |
| JPH11211420A (en) * | 1998-01-20 | 1999-08-06 | Fuji Mach Mfg Co Ltd | Optical dimension measurement and device therefor |
| CN101435697A (en) * | 2007-11-15 | 2009-05-20 | 比亚迪股份有限公司 | Method and system for detecting position of through hole |
| CN101539409A (en) * | 2009-04-28 | 2009-09-23 | 江苏大学 | Light source system for online detection of soft capsules based on LED |
| CN102353680A (en) * | 2011-07-08 | 2012-02-15 | 中国科学院宁波材料技术与工程研究所 | Method for evaluating surface detects of small-sized workpieces and flow for detecting unqualified workpieces |
| CN102759329A (en) * | 2012-07-18 | 2012-10-31 | 广元博锐精工科技有限公司 | Device and method for detecting precision of tiny and complicated components |
| CN103234485A (en) * | 2013-04-19 | 2013-08-07 | 中科中涵激光设备（福建）股份有限公司 | Parallelism detection method |
| CN104180764A (en) * | 2013-05-22 | 2014-12-03 | 谐波传动系统有限公司 | Gap measurement device |
| CN104048604A (en) * | 2014-06-23 | 2014-09-17 | 深圳市巨兆数码有限公司 | Battery size optical measurement method and system |
| CN204881541U (en) * | 2015-05-27 | 2015-12-16 | 北京理工大学 | Hand -held type panel installation quality detector |
| CN107097009A (en) * | 2017-03-20 | 2017-08-29 | 多氟多（焦作）新能源科技有限公司 | Lithium battery production line and the conductive handle position finding and detection method of lug, welder |
| CN107202806A (en) * | 2017-07-13 | 2017-09-26 | 无锡鼎邦换热设备有限公司 | Air cooler bobbin carriage weld seam Non-Destructive Testing technique |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109900213A (en) * | 2019-03-18 | 2019-06-18 | 上海智觅智能科技有限公司 | A kind of sensor circuit detecting sun-proof frost thickness |
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Application publication date: 20180622 |
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