CN109839055A - A kind of high-precision digital measurement method of antenna house thickness - Google Patents
A kind of high-precision digital measurement method of antenna house thickness Download PDFInfo
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- CN109839055A CN109839055A CN201711234963.8A CN201711234963A CN109839055A CN 109839055 A CN109839055 A CN 109839055A CN 201711234963 A CN201711234963 A CN 201711234963A CN 109839055 A CN109839055 A CN 109839055A
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Abstract
The present invention relates to a kind of high-precision digital measurement methods of antenna house thickness, it is characterized in that, step 1:A point normal direction determines, using three coordinate measuring machine automatic measurement surface points function, the normal direction of initial any given measurement A point, while obtaining 3 d space coordinate value ((x of the A point under three coordinate measuring machine device coordinate system1,y1,z1))；Step 2:B space of points coordinate value determines, using vector point normal direction reverse function in three coordinate measuring machine, determining A point normal direction is inverted to obtain (- (i, j, k)), obtains B space of points D coordinates value (x2,y2,z2)；Step 3: thickness determines, calculates the three-dimensional space distance between A point and B point, as product is in A point or the thickness value T of B point.The present invention realizes the high-precision full-scale measurement of curved face product thickness.
Description
Technical field
The present invention relates to a kind of high-precision digital measurement methods using three coordinate measuring engine measurement antenna house thickness.
Background technique
The final performance superiority and inferiority of antenna house is heavily dependent on the final thickness of product, therefore thickness design is antenna
One of the key point of cover initial stage design, clearly proposes antenna house thickness and precision requirement in the design drawing of antenna house.How
Realizing that the thickness of final antenna house accurately controls is the most important thing in antenna house forming process, how to be realized to antenna house thickness
Comprehensively, accurately measurement is the difficult point confronted.
It is limited using traditional measurement mode such as slide calliper rule, micrometer by shelf range itself and is merely capable of realizing to antenna house
The Thickness sensitivity at edge, and for far from antenna house marginal position, traditional measurement mode cannot achieve thickness measure at all, in turn
It cannot achieve the complete detection to integrated antenna cover thickness.Antenna house is mostly complex-curved structure type, the serious shadow of Curvature varying
The measurement accuracy for ringing the thickness measure of traditional measurement mode, causes thickness measurement insincere.
There are ultrasonic thickness measurement and magnetic force thickness measuring using relatively broad digitlization thickness measuring mode at present, antenna house mostly uses bee
Nest/foam core sandwich form, honeycomb/foam are larger to ultrasonic energy decaying, and ultrasonic thickness measurement cannot achieve to day
The measurement of irdome thickness.Magnetic force thickness measuring carries out thickness measure to nonferromugnetic material using Magnetic Methods, when thickness measuring, by magnetic probe
It is placed in the one side of measured material, and corresponding steel ball is placed in another side, the hall effect sensor on probe can measure spy
Head point arrives the distance of steel ball, so that digital thickness reading is provided, since hysteresis effect of the steel ball to magnetic force is obvious, in addition antenna house
By the influence of bag surface roughness, cause thickness measurement error larger.
Summary of the invention
Innovation and creation purpose
Present invention is primarily intended to the high-precision digital measurement to antenna house thickness is realized by three coordinate measuring machine.
Technical solution
A kind of high-precision digital measurement method of antenna house thickness, which is characterized in that specific step is as follows:
Step 1:A point normal direction determines
Using three coordinate measuring machine automatic measurement surface points function, the normal direction of initial any given measurement A point, three are sat
The normal direction of the multiple points of a small range around the probe automatic measurement A point of co-ordinate measuring machine, so that it is determined that the normal direction of A point
((i, j, k)), while obtaining 3 d space coordinate value ((x of the A point under three coordinate measuring machine device coordinate system1,y1,z1))；
Step 2:B space of points coordinate value determines
Using vector point normal direction reverse function in three coordinate measuring machine, determining A point normal direction is inverted to obtain
(- (i, j, k)), while vector dot thickness function is used, the bias t of measurement is set, at this time A space of points D coordinates value edge-
(i, j, k) normal direction biases t, obtains biasing the coordinate value ((x of A point1,y1,z1)), along normal direction (- (i, j, k)), measurement
Bias coordinate value ((x1,y1,z1)), obtain B space of points D coordinates value (x2,y2,z2)；
Step 3: thickness determines
The three-dimensional space distance between A point and B point is calculated, as product is in A point or the thickness value T of B point.Preferably, it walks
Rapid 1 using A point as the center of circle, and the normal direction of multiple points is taken within the scope of 2~5mm of diameter.The normal direction of 3 points need at least be taken.
Bias t >=thickness Theoretical Design value that step 2 is arranged.
Invention effect
The present invention realizes the high-precision full-scale measurement of curved face product thickness.
Detailed description of the invention
Fig. 1 is thickness measure schematic diagram；
1 product partial schematic diagram of Fig. 2 embodiment；
2 product partial schematic diagram of Fig. 3 embodiment.
Concrete mode
As shown in Figure 1, the present invention creatively uses three coordinate measuring machine to determine the normal of certain point on antenna house (A point)
Direction ((i, j, k)) (as shown in Figure 1), and to 3 d space coordinate the value ((x of the A point1,y1,z1)) record is measured, it borrows
The normal direction of A point and its determination is helped, the 3 d space coordinate value of A point normal direction opposite direction (- (i, j, k)) B point is measured
(x2,y2,z2), the space length for calculating A point to B point is thickness value (T) of the antenna house in A point, this method antenna house thickness measuring essence
Degree can reach 5 μm, and the thickness measure full-scale to product may be implemented.
It is described in detail below with reference to Fig. 2-3 pairs of embodiments
Embodiment 1
Fig. 2 show 1 partial schematic diagram of embodiment, using method for measuring thickness described in the invention to the product thickness
It measures, measurement result is as shown in table 1.
Product thickness measurement result shown in 1 Fig. 2 of table
| Position | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| Thickness/mm | 4.547 | 4.539 | 4.511 | 4.537 | 4.522 | 4.507 | 4.517 | 4.486 | 4.478 |
| Position | 10 | 11 | 12 | 13 | 14 | 15 | |||
| Thickness/mm | 4.493 | 4.468 | 4.528 | 4.512 | 4.532 | 5.482 |
Embodiment 2
Fig. 3 show 2 product partial schematic diagram of embodiment, using method for measuring thickness described in the invention to the product
Thickness on different buses measures, and measurement result is as shown in table 2.
Product thickness measurement result shown in 2 Fig. 3 of table
| Bus | Position | 1 | 2 | 3 | 4 | 5 |
| 1 | Thickness/mm | 2.469 | 2.328 | 2.357 | 2.341 | 2.323 |
| 2 | Thickness/mm | 2.407 | 2.34 | 2.365 | 2.297 | 2.265 |
| 3 | Thickness/mm | 2.339 | 2.277 | 2.283 | 2.256 | 2.253 |
| 4 | Thickness/mm | 2.35 | 2.345 | 2.338 | 2.364 | 2.339 |
| 5 | Thickness/mm | 2.254 | 2.28 | 2.269 | 2.267 | 2.269 |
Claims (4)
1. a kind of high-precision digital measurement method of antenna house thickness, which is characterized in that specific step is as follows:
Step 1:A point normal direction determines
Using three coordinate measuring machine automatic measurement surface points function, the normal direction of initial any given measurement A point, three coordinates are surveyed
The normal direction of the multiple points of a small range around the probe automatic measurement A point of amount machine, so that it is determined that A point normal direction ((i, j,
K)), while 3 d space coordinate value ((x of the A point under three coordinate measuring machine device coordinate system is obtained1,y1,z1))；
Step 2:B space of points coordinate value determines
Using vector point normal direction reverse function in three coordinate measuring machine, determining A point normal direction is inverted to obtain (- (i,
J, k)), at the same use vector dot thickness function, the bias t of measurement is set, at this time A space of points D coordinates value along-(i, j,
K) normal direction biases t, obtains biasing the coordinate value ((x of A point1,y1,z1)), along normal direction (- (i, j, k)), measurement biasing
Coordinate value ((x1,y1,z1)), obtain B space of points D coordinates value (x2,y2,z2)；
Step 3: thickness determines
The three-dimensional space distance between A point and B point is calculated, as product is in A point or the thickness value T of B point.
2. measurement method as described in claim 1, which is characterized in that step 1 is using A point as the center of circle, in diameter 2~5mm range
Inside take the normal direction of multiple points.
3. measurement method as described in claim 1, which is characterized in that step 1: at least taking the normal direction of 3 points.
4. measurement method as described in claim 1, which is characterized in that bias t >=thickness Theoretical Design that step 2 is arranged
Value.
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| CN201711234963.8A CN109839055A (en) | 2017-11-29 | 2017-11-29 | A kind of high-precision digital measurement method of antenna house thickness |
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| CN201711234963.8A CN109839055A (en) | 2017-11-29 | 2017-11-29 | A kind of high-precision digital measurement method of antenna house thickness |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112097656A (en) * | 2020-11-09 | 2020-12-18 | 西安奕斯伟硅片技术有限公司 | Detection system and detection method for edge removal width of wafer back sealing film |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201434677Y (en) * | 2009-07-03 | 2010-03-31 | 东华大学 | Normal thickness quick-measuring device |
| CN104359374A (en) * | 2014-11-11 | 2015-02-18 | 上海无线电设备研究所 | Device and method for manually measuring normal thickness of large cavity deep radome |
| CN106767627A (en) * | 2015-11-19 | 2017-05-31 | 曹敬伟 | A kind of micro-displacement touch sensor device |
-
2017
- 2017-11-29 CN CN201711234963.8A patent/CN109839055A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201434677Y (en) * | 2009-07-03 | 2010-03-31 | 东华大学 | Normal thickness quick-measuring device |
| CN104359374A (en) * | 2014-11-11 | 2015-02-18 | 上海无线电设备研究所 | Device and method for manually measuring normal thickness of large cavity deep radome |
| CN106767627A (en) * | 2015-11-19 | 2017-05-31 | 曹敬伟 | A kind of micro-displacement touch sensor device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112097656A (en) * | 2020-11-09 | 2020-12-18 | 西安奕斯伟硅片技术有限公司 | Detection system and detection method for edge removal width of wafer back sealing film |
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Application publication date: 20190604 |
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