CN101561254B - Measuring method of intracavity geometric quantity - Google Patents
Measuring method of intracavity geometric quantity Download PDFInfo
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- CN101561254B CN101561254B CN2009101469453A CN200910146945A CN101561254B CN 101561254 B CN101561254 B CN 101561254B CN 2009101469453 A CN2009101469453 A CN 2009101469453A CN 200910146945 A CN200910146945 A CN 200910146945A CN 101561254 B CN101561254 B CN 101561254B
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- shaped slide
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Abstract
The invention relates to a measuring method of intracavity geometric quantity. In the invention, an H-shaped slide way (3) is arranged in a cavity (1) with a rectangle section by suspension and can move in the cavity (1). In order to verify that the H-shaped slide way (3) is not connected and rubbed with the inner wall of the cavity and ensure safe flight, a gap between the slide way and the cavity (1) needs measuring. In the invention, an endoscope detecting head (6) and a straight rigid guide rod (7) extend into the cavity (1) through a through hole (2) on the cavity (1). Then the detectinghead (6) is used for photographing the guide rod (7), the H-shaped slide way (3) and a measured object and analyzing mutual proportional relation. Finally, the distance between the H-shaped slide way(3) and the inner cavity wall is calculated according to the the known size of the H-shaped slide way and the proportional relation with the measured object. The method can measure the distance between the H-shaped slide way (3) and the inner cavity wall in a closed space and verify whether the H-shaped slide way (3) is in contact with the inner cavity wall, thus guaranteeing safe flight and having relatively high actual application value.
Description
Technical field
The present invention relates to a kind of space geometry measurement amount, particularly about the geometric measurement method in a kind of closed inner chamber.
Background technology
In sealing or semiclosed inner chamber, the universal measurement utensil can't touch measurand, therefore is difficult to tested solid is implemented to measure.And because the difference of actual annular seal space,, therefore still there is not unified intracavity measuring method to the measuring method of object in the different sealing chamber yet difference to some extent.
The control gear of aircraft slat rail is to be that I-shaped slide rail is installed in the circular arc inner chamber of a sealing with circular arc and cross section, and wherein said intracavity section is a rectangle.The I-shaped inboard of described slide rail is accepted by plurality of gears and is hanging shape, and I-shaped slide rail can move in the circular arc inner chamber by the control of porch gear.
Wherein, described inner chamber and I-shaped slide rail be respectively according to design data machine-shaping, therefore, I-shaped slide rail lateral length and vertical width and inner chamber length and width are thick be known.After assembling was finished, when the operating aircraft slat, each end face of slide rail can not come in contact with interior cavity wall, otherwise the friction of slide rail and interior cavity wall can cause influencing normal running, and because of frictional heat generation potential safety hazard.Therefore between the whole motor area of slide rail, need to measure the distance between cavity wall in the upper and lower end face of slide rail and left and right end face and the circular arc, with interior cavity wall relative friction does not take place, guarantee flight safety with the checking arc-shaped rack.
Yet because this device is mounted in wing inside, limit by the locus, be difficult to realize measuring with the method for Non-Destructive Testing.And because survey instrument is difficult to directly touch measurand, therefore existing conventional measuring method is difficult to carry out measurement, needs according to the special measuring method of this device characteristic design for this reason.
Summary of the invention
Be difficult to pitch problems between survey aircraft inner chamber slide rail and the internal chamber wall in order to solve prior art, the invention provides the measuring method of spacing between a kind of aircraft inner chamber slide rail and the internal chamber wall, thereby the space between survey aircraft inner chamber slide rail and internal chamber wall effectively easily is to guarantee flight safety.
In order to solve the problems of the technologies described above, the invention provides following technical scheme: a kind of measuring method of intracavity geometric quantity, wherein, described inner chamber is a slide rail chamber, its cross section rectangle, its chamber wall is provided with at least one through hole, and inner be provided with one can move along the slide rail chamber and the I-shaped slide rail of interior suspension type that sectional dimension is known, wherein, described I-shaped slide rail is put the beams in place and is connected by a connecting link with the underbeam middle part, and described upper beam is all consistent with the underbeam geomery, and size is known, and have the gap between described I-shaped slide rail and inner chamber wall, the spacing of the two is measuring object, and its measuring process is as follows:
Step 4. is taken pictures with 6 pairs of guide bars 7 of detecting head and I-shaped slide rail 3 and measuring object;
Described measurand be on the I-shaped slide rail underbeam to internal chamber wall apart from the time, needed I-shaped slide rail is of a size of up and down cantilever thickness.
Described measurand be hold about I-shaped slide rail internal chamber wall apart from the time, needed I-shaped slide rail is of a size of the left and right sides lateral length of underbeam.
Described detecting head is the endoscope detecting head, and described detecting head is equipped with illuminator.
Described inner chamber and I-shaped slide rail are the circular arc of camber unanimity.
Described intracavity through hole is mounting hole or screw or detects the hole.
The principle of work of measuring method of intracavity geometric quantity utilization industrial endoscope of the present invention, at first can observe the geometry of measurand by its illuminator, next utilizes its high precision photograph principle, assist with straight rigidity guide bar as measuring the terminus guiding, the proportionate relationship of definite whereby measurand and I-shaped slide rail region of interest size.And with install before the I-shaped slide rail region of interest dimensional data that records combine, passing ratio calculates, and can obtain measurand.
Therefore measuring method of intracavity geometric quantity of the present invention can effectively be measured the distance between inner chamber slide rail and the slide rail chamber wall.According to the measurand position, when condition is permitted, under the situation of not destroying the objective body structure, can increase the detection aperture simultaneously, measure needs to satisfy at skin.
Description of drawings
Fig. 1 is the sectional view of aircraft slide rail inner chamber of the present invention;
Wherein, 1-inner chamber, 2-through hole, the I-shaped slide rail of 3-, 4-upper beam, 5-underbeam, 6-detecting head, 7-guide bar.
Embodiment
Because the control gear of aircraft slat rail, be to be that I-shaped slide rail is installed in the circular arc inner chamber of a sealing with circular arc and cross section.The I-shaped inboard of described slide rail is accepted by plurality of gears and is hanging shape, and passes through the control of porch gear, can move in the circular arc inner chamber.Simultaneously, when the operating aircraft slat, do not contact, need measure the spacing between each end of I-shaped slide rail and the internal chamber wall, to guarantee flight safety with internal chamber wall in order to verify I-shaped slide rail.
See also Fig. 1, it is the sectional view of aircraft slide rail inner chamber of the present invention.Among the figure, described circular arc inner chamber 1 cross section is a rectangle, and its size can record before installing, and has a through hole 2 on its lower wall right-hand member, and this through hole is the exocoel osculum, and diameter is 10mm.Wherein, described I-shaped slide rail 3 is put the beams in place and 4 is connected by a connecting link with underbeam 5 middle parts, and described upper beam 4 is all consistent with underbeam 5 geomeries, and on underbeam left and right sides lateral length and longitudinal thickness equidimension all before installation, record, so be known.All there are certain clearance in underbeam left and right sides end face and vertical upper and lower end face with internal chamber wall on the described I-shaped slide rail, and this gap is measuring object of the present invention.
Measuring method of intracavity geometric quantity of the present invention is by the endoscope principle of taking a picture, the endoscope detecting head 6 and one of choosing diameter and be 5mm has the straight rigidity guide bar 7 of scale, the diameter of described detecting head 6 and straight rigidity guide bar 7 all less than the diameter of through hole 2, passes in and out with convenient.The present invention is by extending into endoscope detecting head 6 and straight rigidity guide bar 7 in the inner chamber 1 via through hole 2.And by the illuminator of detecting head guide bar 7 is adjusted to as far as possible and to be in the same plane with measurand.Take pictures by 6 pairs of tested positions of detecting head then, obtain the relative scale relation of I-shaped slide rail size on guide bar 7 of measurand and institute's reference,, can obtain the result that asks by calculating according to the known size of I-shaped slide rail.
Therefore, the measuring method of intracavity geometric quantity operation steps of present embodiment is as follows:
Step 4. is taken pictures with 6 pairs of guide bars 7 of detecting head and I-shaped slide rail 3 and measuring object;
Wherein, when described measurand be on the I-shaped slide rail underbeam to internal chamber wall apart from the time, the contact of guide bar 7 internal chamber wall relative with I-shaped slide rail 3 upper and lower end faces, needed I-shaped slide rail is of a size of the thickness of underbeam.Pass through take a picture and obtain measurand and the proportionate relationship of cantilever thickness on guide bar 7 up and down.And cantilever thickness is known up and down, so under a proportional relationship, can calculate measurand, and just I-shaped slide rail upper and lower end face is to the distance of internal chamber wall.
If described measurand be hold about I-shaped slide rail internal chamber wall apart from the time, the contact of guide bar 7 internal chamber wall relative with I-shaped slide rail 3 left and right sides end faces, needed I-shaped slide rail is of a size of the left and right sides lateral length of underbeam.In like manner, can obtain the proportionate relationship with respect to guide bar 7 of measurand and I-shaped slide rail lateral dimension according to the photo that the endoscope detecting head is taken, calculate the distance of I-shaped slide rail left and right sides end face by known I-shaped slide rail lateral dimension then to internal chamber wall.
Yet in the actual job, in order to improve measuring accuracy, can take multiple pictures, and the photo of choosing wherein angle, best results is as measurement data to same measuring object.
In addition, the present invention measures required through hole 2 and is not limited to osculum, the detection hole that can be mounting hole, screw or offer specially according to the special circumstances needs, as long as its position suitable, size can get final product for endoscope detecting head 6 and guide bar 7 turnover.
Measuring method of intracavity geometric quantity of the present invention in sum stretches into intracavity through hole with endoscope detecting head and guide bar, obtain measuring object and I-shaped slide rail size by taking pictures with respect to the guide bar proportionate relationship, calculate measuring object according to known I-shaped slide rail size then.Therefore the invention solves prior art and be difficult to measure the I-shaped slide rail in the enclosure space and the problem of internal chamber wall spacing, thereby can verify between the two whether come in contact, guarantee flight safety, and simple to operate, have a stronger practical value.
Claims (5)
1. measuring method of intracavity geometric quantity, wherein, described inner chamber (1) is a slide rail chamber, its cross section rectangle, its chamber wall is provided with at least one through hole (2), and inner be provided with one can move along the slide rail chamber and the I-shaped slide rail of interior suspension type that sectional dimension is known (3), wherein, described I-shaped slide rail upper beam (4) is connected by a connecting link with underbeam (5) middle part, and described upper beam (4) is all consistent with underbeam (5) shape and size, and size is known, and there is the gap between described I-shaped slide rail (3) and inner chamber wall, the spacing of the two is measuring object, it is characterized in that, measuring process is as follows:
Step 1. confirms that the known I-shaped slide rail (3) of size has been installed in the inner chamber (1);
Step 2. is selected intracavity through hole (2), and a detecting head (6) and a guide bar (7) are stretched in the inner chamber (1) by through hole (2), makes guide bar (7) contact with the residing internal chamber wall of measurand, and wherein, described detecting head (6) is equipped with illuminator;
Step 3. is adjusted guide bar (7) position under detecting head (6) monitors, make it parallel with I-shaped slide rail (2) cross section;
Step 4. is taken pictures to guide bar (7) and I-shaped slide rail (3) and measuring object with detecting head (6);
Step 5. is according to taking a picture analysis to measure object and the I-shaped slide rail size proportionate relationship with respect to guide bar (7);
Step 6. is calculated the distance of I-shaped slide rail (3) to internal chamber wall according to known I-shaped slide rail size and with the proportionate relationship of measuring object.
2. measuring method of intracavity geometric quantity according to claim 1 is characterized in that: described measurand be on the I-shaped slide rail underbeam to internal chamber wall apart from the time, needed I-shaped slide rail (3) is of a size of up and down cantilever thickness.
3. measuring method of intracavity geometric quantity according to claim 1 is characterized in that: described measurand be hold about I-shaped slide rail internal chamber wall apart from the time, needed I-shaped slide rail (3) is of a size of the left and right sides lateral length of underbeam.
4. according to claim 2 or 3 described measuring method of intracavity geometric quantity, it is characterized in that: described detecting head (6) is the endoscope detecting head.
5. measuring method of intracavity geometric quantity according to claim 1 is characterized in that: described intracavity through hole (2) is for mounting hole or screw or detect the hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101469453A CN101561254B (en) | 2009-06-05 | 2009-06-05 | Measuring method of intracavity geometric quantity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101469453A CN101561254B (en) | 2009-06-05 | 2009-06-05 | Measuring method of intracavity geometric quantity |
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| CN101561254A CN101561254A (en) | 2009-10-21 |
| CN101561254B true CN101561254B (en) | 2010-11-24 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102944201A (en) * | 2012-11-12 | 2013-02-27 | 中国航空工业集团公司西安飞机设计研究所 | Method for determining size of section of four-lug hollow beam of aircraft high-speed flutter model |
| CN109606607A (en) * | 2018-11-02 | 2019-04-12 | 中国航空工业集团公司西安飞机设计研究所 | A kind of Drainage Design method in airframe |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19513930A1 (en) * | 1995-02-24 | 1996-09-05 | Olympus Optical Co | Endoscope equipment |
| JP2004164479A (en) * | 2002-11-15 | 2004-06-10 | Nippon Hoso Kyokai <Nhk> | Device, method, and program for generating image deformation information |
| CN1806747A (en) * | 2004-05-26 | 2006-07-26 | 吴冈 | Endoscope system with measuring function and measuring method thereof |
-
2009
- 2009-06-05 CN CN2009101469453A patent/CN101561254B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19513930A1 (en) * | 1995-02-24 | 1996-09-05 | Olympus Optical Co | Endoscope equipment |
| JP2004164479A (en) * | 2002-11-15 | 2004-06-10 | Nippon Hoso Kyokai <Nhk> | Device, method, and program for generating image deformation information |
| CN1806747A (en) * | 2004-05-26 | 2006-07-26 | 吴冈 | Endoscope system with measuring function and measuring method thereof |
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| CN101561254A (en) | 2009-10-21 |
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