CN105136094B - A kind of surface coordinates system based on symmetric double curved plate curved surface aided measurement device determines method - Google Patents
A kind of surface coordinates system based on symmetric double curved plate curved surface aided measurement device determines method Download PDFInfo
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- CN105136094B CN105136094B CN201510288841.1A CN201510288841A CN105136094B CN 105136094 B CN105136094 B CN 105136094B CN 201510288841 A CN201510288841 A CN 201510288841A CN 105136094 B CN105136094 B CN 105136094B
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Abstract
It is a kind of to determine method for the curved surface aided measurement device of symmetric double curved plate and surface coordinates system, it is related to Aero-Space manufacture mechanical field.The device and method solves current curved surface aided measurement device and determines the problem of coordinate system, method is cumbersome, computationally intensive.Scheme：Pedestal upper and lower end face keeping parallelism, the first fixed seat is respectively provided with the two side intersected on pedestal, it is respectively equipped with boss on pedestal in remaining two side walls, each boss is provided with interior two internal thread holes, and one end of each bolt passes through affixed with the second fixed seat after internal thread hole.Method scheme：It is fixed Step 1: curved-surface piece is placed in device；Step 2: obtain cloud data；Step 3: forming coordinate system, Imageware software processing cloud datas are utilized.The present invention is used for the subsidiary of the curved surface of symmetric double curved plate.
Description
Technical field
The present invention relates to a kind of surface coordinates system based on symmetric double curved plate curved surface aided measurement device to determine method, relates to
And Aero-Space manufacture mechanical field.
Background technology
Hyperbolicity part is used for aerospace industry, covering, the double-curved wallboard of such as aircraft, is also accounted in civil area
There is certain proportion.The radius of curvature of hyperbolicity part changes along different directions, therefore its complicated geometric profile increases
Measurement difficulty is added.Resilience can occur upon bending for sheet material, and resilience is to influence the key factor of sheet metal component forming accuracy.In order to fixed
Quantifier elimination resilience is, it is necessary to establish curved-surface piece symmetrical centre, and it is constant to set point holding position before and after resilience.It is right according to this
Claim central point to establish coordinate system, and evaluate springback capacity of the unloading rear curved surface part relative to unloading front curve part.
The foundation of curved-surface piece coordinate system needs to obtain the vertical relation of the origin of coordinates and three-dimensional, for obvious
The curved surface of symmetrical feature, only it is difficult to from the surface points cloud of acquisition establishing the origin of coordinates and three-dimensional (such as x-axis, y-axis and z-axis)
Vertical relation.The transform method of a kind of scanner coordinate system and engineering survey coordinate system is described in existing patent.But become
It is relatively complicated to change method, it is computationally intensive, while need to set target to determine the wide position relationship of measuring wheel, test job compared with
Weight.
The content of the invention
It is an object of the invention to provide a kind of surface coordinates system based on symmetric double curved plate curved surface aided measurement device is true
Method is determined, to solve current curved surface aided measurement device and determine the problem of coordinate system, method is cumbersome, computationally intensive.
The present invention adopts the technical scheme that to solve above-mentioned technical problem：
Device scheme：Described device includes pedestal, two the first fixed seats, two the second fixed seats, two boss and four
Individual bolt, pedestal upper and lower end face keeping parallelism are respectively provided with the first fixed seat on the two side intersected on pedestal, remaining on pedestal
Two side walls on be respectively provided with boss, each boss is provided with two internal thread holes, after one end of each bolt passes through internal thread hole
It is affixed with the second fixed seat.
Method scheme：Step 1: curved-surface piece is placed on the horizontal end face of pedestal, make the adjacent two side of curved-surface piece and the
The horizontal segment side wall of one fixed seat is in close contact, and the horizontal segment side wall of the second fixed seat is contacted with the another adjacent wall of curved-surface piece,
Bolt is passed through the internal thread hole of boss, and contact the rear end face of the vertical section of two the second fixed seats, swivel bolt makes second
The front end face of the vertical section of fixed seat keeps being in close contact with curved-surface piece；
Step 2: obtain cloud data, using the curved surface of the scanning probe curved-surface piece of portable surveying instrument, while the is scanned
The horizontal end face of the profile of two fixed seat vertical section front end faces, the profile of the first fixed seat vertical section front end face and pedestal, obtain
Corresponding cloud data；
Step 3: forming coordinate system, using Imageware software processing cloud datas, gain-of-function 5 is fitted using software
The plane of reference of individual end face, the first fixed seat vertical section front end face of gain-of-function base level end face and pedestal is intersected using software
Two intersections, two intersections of base level end face and the second fixed seat vertical section front end face, according to transversal function, structure four
Side shape and the midpoint for obtaining each edge, connect respectively to obtaining two straight lines to midpoint, two straight lines are base level end face
Interior x-axis and y-axis, the vertical line that two straight-line intersections establish x-axis and y-axis is crossed, vertical line is z-axis line, z-axis and curved surface
The intersection point of part point cloud is the symmetrical origin of curved surface, and x-axis and y-axis are moved into symmetrical origin along the z-axis direction, then constitute the three of curved-surface piece
Dimension coordinate system.
The invention has the advantages that：1st, aided measurement device of the invention, physical dimension is small, and operation is simple, can
Realize a variety of measurements with symmetric shape curved surface.2nd, curved surface part after being fastened using aided measurement device can use contact or
Person's non-contact measuring instrument obtains the point cloud of part curved surface profile and the plane of reference.3rd, by Imageware softwares, a cloud can be entered
Row processing, according to the geometry vertical relation of the plane of reference, can quick obtaining curved surface symmetrical origin and coordinate system.
Brief description of the drawings
Fig. 1 is the stereogram of overall aided measurement device and curved-surface piece to be measured.
Embodiment
Embodiment one：Illustrate present embodiment with reference to Fig. 1, the device of present embodiment includes pedestal 1, two the
One 3, two boss 4 of the second fixed seat of fixed seat 2, two and four bolts 5, the upper and lower end face keeping parallelism of pedestal 1, on pedestal 1
It is respectively provided with the first fixed seat 2 on intersecting two side, boss 4, each boss is respectively provided with remaining two side walls on pedestal 1
4 are provided with two internal thread hole 4-1, and one end of each bolt 5 passes through affixed with the second fixed seat 3 after internal thread hole 4-1.
Embodiment two：Illustrate present embodiment with reference to Fig. 1, the first fixed seat of present embodiment 2 and second is fixed
The shape of cross section of seat 3 is L-shaped, and this structure is easy to manufacture.Other embodiment is identical with embodiment one.
Embodiment three：Illustrate present embodiment with reference to Fig. 1, the first fixed seat of present embodiment two 2 it is affixed and
Therebetween angle is 90 °, and this structure is easy to operate when using.Other embodiment is identical with embodiment one.
Embodiment four：Illustrate present embodiment with reference to Fig. 1, present embodiment comprises the following steps：Step 1: will
Curved-surface piece 6 is placed on the horizontal end face of pedestal 1, makes 6 adjacent two side of curved-surface piece and the horizontal segment side wall of the first fixed seat 2 tight
Contiguity is touched, and the horizontal segment side wall of the second fixed seat 3 is contacted with 6 another adjacent wall of curved-surface piece, makes bolt 5 through the interior of boss 4
Screwed hole 4-1, and the rear end face of the vertical section of two the second fixed seats 3 is contacted, swivel bolt 5 makes the vertical of the second fixed seat 3
The front end face of section keeps being in close contact with curved-surface piece 6；
Step 2: obtaining cloud data, using the curved surface of the scanning probe curved-surface piece 6 of portable surveying instrument, scan simultaneously
Profile, the profile of the vertical section front end face of the first fixed seat 2 and the horizontal end face of pedestal 1 of the vertical section front end face of second fixed seat 3,
Obtain corresponding cloud data；
Step 3: forming coordinate system, using Imageware software processing cloud datas, gain-of-function 5 is fitted using software
The plane of reference of individual end face, before the vertical section of the first fixed seat 2 that 1 horizontal end face of gain-of-function pedestal and pedestal 1 are intersected using software
Two intersections of two intersections of end face, 1 horizontal end face of pedestal and the vertical section front end face of the second fixed seat 3, according to transversal function,
Structure quadrangle simultaneously obtains the midpoint of each edge, connects respectively to obtaining two straight lines to midpoint, two straight lines are the water of pedestal 1
X-axis and y-axis in planar end surface, cross two straight-line intersections and establish the vertical line of x-axis and y-axis, vertical line is z-axis line, z-axis
Intersection point with curved-surface piece point cloud is the symmetrical origin of curved surface, and x-axis and y-axis are moved into symmetrical origin along the z-axis direction, then constitute curved surface
The three-dimensional system of coordinate of part.
Claims (1)
1. a kind of surface coordinates system based on symmetric double curved plate curved surface aided measurement device determines method, the curved surface auxiliary is surveyed
Amount device includes pedestal (1), two the first fixed seats (2), two the second fixed seats (3), two boss (4) and four bolts
(5), pedestal (1) upper and lower end face keeping parallelism, the first fixed seat (2), pedestal are respectively provided with the two side intersected on pedestal (1)
(1) boss (4) is respectively provided with upper remaining two side walls, each boss (4) is provided with two internal thread holes (4-1), each bolt
(5) one end is affixed with the second fixed seat (3) afterwards through internal thread hole (4-1), the first fixed seat (2) and the second fixed seat (3)
Shape of cross section be L-shaped, the angle that two the first fixed seats (2) are affixed and the two front end face is formed is 90 °,
It is characterized in that：It the described method comprises the following steps：
Step 1: curved-surface piece (6) is placed on the horizontal end face of pedestal (1), make the adjacent two side of curved-surface piece (6) solid with first
The horizontal segment side wall of reservation (2) is in close contact, and makes the horizontal segment side wall and curved-surface piece (6) another adjacent wall of the second fixed seat (3)
Contact, bolt (5) is passed through the internal thread hole (4-1) of boss (4), and contact the rear end of two the second fixed seat (3) vertical sections
Face, swivel bolt (5) make the front end face of the second fixed seat (3) vertical section and curved-surface piece (6) keep being in close contact；
Step 2: obtain cloud data, using the curved surface of the scanning probe curved-surface piece (6) of portable surveying instrument, while the is scanned
The profile, the profile of the first fixed seat (2) vertical section front end face and the level of pedestal (1) of two fixed seats (3) vertical section front end face
End face, obtain corresponding cloud data；
Step 3: forming coordinate system, using Imageware software processing cloud datas, 5 ends of gain-of-function are fitted using software
The plane of reference in face, the first fixed seat (2) vertical section of the horizontal end face of gain-of-function pedestal (1) and pedestal (1) is intersected using software
Two intersections of two intersections of front end face, the horizontal end face of pedestal (1) and the second fixed seat (3) vertical section front end face, according to cut
Line function, build quadrangle and obtain the midpoint of each edge, connect respectively to obtaining two straight lines to midpoint, two straight lines are
X-axis and y-axis in pedestal (1) horizontal end face, cross the vertical line that two straight-line intersections establish x-axis and y-axis, and vertical line is
Z-axis line, z-axis and the intersection point of curved-surface piece point cloud are the symmetrical origin of curved surface, x-axis and y-axis are moved into symmetrical origin along the z-axis direction, then
Constitute the three-dimensional system of coordinate of curved-surface piece.
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| CN201510288841.1A CN105136094B (en) | 2015-05-29 | 2015-05-29 | A kind of surface coordinates system based on symmetric double curved plate curved surface aided measurement device determines method |
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| CN201510288841.1A CN105136094B (en) | 2015-05-29 | 2015-05-29 | A kind of surface coordinates system based on symmetric double curved plate curved surface aided measurement device determines method |
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| CN105136094B true CN105136094B (en) | 2018-01-30 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106767644B (en) * | 2017-02-22 | 2023-02-21 | 长春工业大学 | Generator for revolution symmetric curved surface |
| CN108562226B (en) * | 2017-12-27 | 2020-05-22 | 歌尔股份有限公司 | Coordinate system establishing device and method |
| CN110415331B (en) * | 2019-06-14 | 2022-08-19 | 中国电建集团昆明勘测设计研究院有限公司 | Method for rapidly detecting, judging and repairing contour or hole based on point cloud data |
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| US4592149A (en) * | 1985-04-18 | 1986-06-03 | Rca Corporation | Apparatus for verifying the acceptability of the curvature of a curved object |
| CN101201236A (en) * | 2006-12-15 | 2008-06-18 | 上海永新彩色显像管股份有限公司 | Device for measurement of curved surface |
| CN102155928A (en) * | 2011-03-03 | 2011-08-17 | 西北工业大学 | Fixture for three-coordinate measuring machine of blade and method for establishing measuring coordinate system |
| CN202974225U (en) * | 2012-12-17 | 2013-06-05 | 法国圣戈班玻璃公司 | Positioning fixture of coordinate measuring machine for detecting automotive glass |
| CN203249561U (en) * | 2013-05-15 | 2013-10-23 | 中国民用航空飞行学院 | Curved-surfaced cross section measurement tool |
| CN103424070A (en) * | 2012-05-23 | 2013-12-04 | 鸿富锦精密工业（深圳）有限公司 | Curved face coordinate system set-up system and method |
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| US4592149A (en) * | 1985-04-18 | 1986-06-03 | Rca Corporation | Apparatus for verifying the acceptability of the curvature of a curved object |
| CN101201236A (en) * | 2006-12-15 | 2008-06-18 | 上海永新彩色显像管股份有限公司 | Device for measurement of curved surface |
| CN102155928A (en) * | 2011-03-03 | 2011-08-17 | 西北工业大学 | Fixture for three-coordinate measuring machine of blade and method for establishing measuring coordinate system |
| CN103424070A (en) * | 2012-05-23 | 2013-12-04 | 鸿富锦精密工业（深圳）有限公司 | Curved face coordinate system set-up system and method |
| CN202974225U (en) * | 2012-12-17 | 2013-06-05 | 法国圣戈班玻璃公司 | Positioning fixture of coordinate measuring machine for detecting automotive glass |
| CN203249561U (en) * | 2013-05-15 | 2013-10-23 | 中国民用航空飞行学院 | Curved-surfaced cross section measurement tool |
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