CN105606037A - Apparatus for measuring carbon fiber composite material body - Google Patents
Apparatus for measuring carbon fiber composite material body Download PDFInfo
- Publication number
- CN105606037A CN105606037A CN201610059316.7A CN201610059316A CN105606037A CN 105606037 A CN105606037 A CN 105606037A CN 201610059316 A CN201610059316 A CN 201610059316A CN 105606037 A CN105606037 A CN 105606037A
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- China
- Prior art keywords
- laser
- plane
- line
- instruments
- psd sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000002131 composite material Substances 0.000 title claims abstract description 22
- 229920000049 Carbon (fiber) Polymers 0.000 title abstract 2
- 239000004917 carbon fiber Substances 0.000 title abstract 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title abstract 2
- 230000033001 locomotion Effects 0.000 claims abstract description 16
- 239000000758 substrate Substances 0.000 claims abstract description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 20
- 229910052799 carbon Inorganic materials 0.000 claims description 20
- 239000000835 fiber Substances 0.000 claims description 20
- 230000015572 biosynthetic process Effects 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 7
- 238000003491 array Methods 0.000 claims description 6
- 238000005259 measurement Methods 0.000 abstract description 15
- 239000004918 carbon fiber reinforced polymer Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 230000004807 localization Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
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
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/004—Measuring arrangements characterised by the use of mechanical techniques for measuring coordinates of points
-
- 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
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
-
- 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
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
- G01B11/245—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures using a plurality of fixed, simultaneously operating transducers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/20—Measuring arrangements characterised by the use of mechanical techniques for measuring contours or curvatures
- G01B5/207—Measuring arrangements characterised by the use of mechanical techniques for measuring contours or curvatures using a plurality of fixed, simultaneously operating transducers
Abstract
The invention discloses an apparatus for measuring a carbon fiber composite material body. The apparatus is composed of a workbench, four groups of the same motion sensing units and a laser emission assembly, wherein the laser emission assembly comprises a substrate, six lasers fixedly installed above the substrate, three supporting legs fixedly installed below the substrate and spheres arranged at the bottom ends of the support legs. The laser axes of five of the lasers are disposed in the same plane, and the plane is parallel to a plane where a triangle formed by connecting the sphere centers of the three spheres is disposed; and the emission direction of the sixth laser is the same as that of the lasers below, and an emitted laser axis of the sixth laser is parallel to laser axes of lasers below in the same plane, and the plane is vertical to the plane where the triangle formed by connecting the sphere centers of the three spheres is disposed. The measurement apparatus provided by the invention is simple in structure and low in cost, has low requirements for operators, is especially quite high in measurement efficiency, and can reach quite high measurement precision.
Description
Technical field
The invention belongs to measurement mechanism technical field, be specifically related to a kind of device of measuring carbon fibre composite vehicle body.
Background technology
The lightweight of body of a motor car, for reducing, automobile energy consumption is significant. Especially for the pure electric vehicle in new-energy automobile, in the situation that current battery performance can not show a candle to people's will, ensureing, under the prerequisite of vehicle body security, to reduce tare, have more realistic meaning. BMW i3 has carried out taking the lead in attempting in this respect. The BMW i3 that appearance is not modest, because adopt carbon fibre composite vehicle body, only 1224kg conducts oneself with dignity.
The carbon fibre composite vehicle body of BMW i3 is to be combined by some Carbon-fiber Reinforced Plastics Components, produce a carbon fibre composite vehicle body, first to produce some Carbon-fiber Reinforced Plastics Components, and then all Carbon-fiber Reinforced Plastics Components are combined. And in production process, must measure Carbon-fiber Reinforced Plastics Component appearance and size and carbon fibre composite vehicle body monnolithic case size.
Conventional three coordinate measuring machine, advanced technology, powerful, certainty of measurement is high, in scientific research, produce in extensive use, can meet the certainty of measurement requirement of a lot of product design sizes. But the technical sophistication of existence, expensive, manufacture and design difficulty large, to operator require high, measure the problems such as efficiency is on the low side, especially for the relatively large body of a motor car of appearance and size.
Summary of the invention
The object of the invention is to address the above problem, a kind of simple in structure, cheap, device of measuring the higher measurement carbon fibre composite vehicle body of efficiency is provided.
The technical scheme that realizes above-mentioned purpose of the present invention is: a kind of device of measuring carbon fibre composite vehicle body, it is by a workbench, four groups of identical motion-sensing unit and Laser emission module composition.
Every group of motion-sensing unit is by a linear motion unit, a grating and a PSD sensor array composition; Described linear motion unit is by rectilinear orbit and carry out straight-line slide unit along described rectilinear orbit and form; Described PSD sensor array is fixedly mounted on described slide unit, and each PSD sensor array is positioned at the PSD sensor composition of same plane by several photosurfaces.
The position relationship of described four PSD sensor arraies and described workbench meets the following conditions: in the time that the slide unit on four linear motion units carries out rectilinear motion, be fixedly mounted on the plane of the inswept formation of photosurface of four PSD sensor arraies on slide unit and described workbench upper surface and form the geometrical relationship of four sides and the bottom surface of a square body.
Described Laser emission assembly comprises a substrate, is fixedly mounted on four laser instruments of substrate top, is fixedly mounted on three legs of substrate below and is arranged on the spheroid of each leg bottom;
The position relationship of described four laser instruments meets the following conditions: the transmit direction of described four laser instruments is all towards PSD sensor array; The laser axis of described four laser instruments transmitting is positioned at same plane, and this plane parallel is in the plane at the triangle place of the centre of sphere line formation of described three spheroids; Described four laser instruments are divided into two groups, the laser axis conllinear of two laser instruments transmittings in every group, two groups of two line parallels that laser instrument forms.
Described Laser emission assembly also comprises the 5th laser instrument that is fixedly mounted on substrate top; The position relationship of described the 5th laser instrument meets the following conditions: two bars of lines that the laser axis of described the 5th laser instrument transmitting is positioned at the laser axis place plane of above-mentioned four laser instruments transmitting and forms perpendicular to described two groups of laser instruments; The transmit direction of described the 5th laser instrument is towards PSD sensor array and two bars of lines that do not form towards described two groups of laser instruments.
Described Laser emission assembly also comprises the 6th laser instrument that is arranged on any top of above-mentioned four laser instruments; The position relationship of described the 6th laser instrument meets the following conditions: described the 6th laser instrument is parallel in same plane with the laser instrument transmit direction laser axis identical and transmitting of its below, and this plane is perpendicular to the plane at the triangle place of the centre of sphere line formation of described three spheroids.
On the laser axis of laser instrument transmitting, definition laser beam leaves the critical localisation of laser instrument to be laser instrument go out luminous point, the spacing of two bars of lines of the spacing >=described two groups of laser instruments formation that goes out one bar of line nearer in two bars of lines that luminous point and described two groups of laser instruments form of described the 5th laser instrument.
The good effect that the present invention has: (1) measurement mechanism of the present invention is simple in structure, cheap, less demanding to operator, and can reach very high certainty of measurement, can substitute the measurement of three coordinate measuring machine to the relatively large carbon fibre composite vehicle body of size completely. (2) measurement mechanism of the present invention is by arranging the 6th laser instrument, can realize laser instrument is opened simultaneously and obtained in the lump six laser induced points, then only need can determine the laser induced point that each laser instrument is corresponding according to the spatial relation between six laser induced points, thereby obtain the locus of three laser axis, greatly improved measurement efficiency.
Brief description of the drawings
Fig. 1 is the structural representation of measurement mechanism of the present invention.
Fig. 2 is the top view of Fig. 1.
Detailed description of the invention
(embodiment 1)
See Fig. 1 and Fig. 2, the device of the measurement carbon fibre composite vehicle body of the present embodiment is by a workbench 1, four groups of identical motion-sensing unit 2 and Laser emission module compositions.
Every group of motion-sensing unit 2 forms by a linear motion unit 21, a grating 22 and a PSD sensor array 23. Linear motion unit 21 is by rectilinear orbit 211 and carry out straight-line slide unit 212 along rectilinear orbit 211 and form; Grating 22 is arranged on rectilinear orbit 211 outsides, for measuring the displacement of slide unit 212; PSD sensor array 23 is fixedly mounted on slide unit 212.
By several, (the present embodiment is 100 to each PSD sensor array 23, be arranged to 100[vertical direction] × 1[horizontal direction] array) the photosurface PSD sensor 231 that is positioned at same plane forms, and the photosurface place plane of all PSD sensors 231 is perpendicular to the upper surface of workbench 1 and be parallel to the linear movement direction of slide unit 212. Like this in the time that the slide unit 212 on four linear motion units 21 carries out rectilinear motion, be fixedly mounted on the plane of the inswept formation of photosurface of four PSD sensor arraies 23 on slide unit 212 and the upper surface of workbench 1 and form the geometrical relationship of four sides and the bottom surface of a square body.
Can determine that thus the mutual alignment relation of four gratings 22 and the photosurface of each PSD sensor 231, with respect to the relative position relation of slide unit 212, are designated as S.
Laser emission assembly comprises a substrate 3, is fixedly mounted on six laser instruments (41,42,43,44,45,46) of substrate 3 tops, is fixedly mounted on three legs 5 of substrate 3 belows and is arranged on the spheroid 6 of each leg 5 bottoms.
The transmit direction of six laser instruments (41,42,43,44,45,46) is all towards PSD sensor array 2.
Wherein, the laser axis of five laser instruments (41,42,43,44,45) transmitting is positioned at same plane, and this plane parallel is in the plane at the triangle place of the centre of sphere line formation of three spheroids 6. Laser instrument 41～laser instrument 45 is counterclockwise layout from overlooking direction (being also the top view of Fig. 2).
Wherein, the laser axis conllinear (being designated as below A line) that laser instrument 41 and laser instrument 44 are launched, the laser axis conllinear (being designated as below B line) that laser instrument 42 and laser instrument 43 are launched, A line and B line parallel and spacing are H.
The laser axis that the 5th laser instrument 45 is launched is perpendicular to A line and B line; The transmit direction of the 5th laser instrument 45 is not towards A line and B line.
On the laser axis of laser instrument transmitting, definition laser beam leaves the critical localisation of laser instrument, and to be laser instrument go out luminous point, and the luminous point (the M point in Fig. 2) that goes out of laser instrument 45 is 2H with spacing >=H(the present embodiment of A line).
The 6th laser instrument 46 is arranged on the arbitrary top of four laser instruments (41,42,43,44) (the present embodiment is laser instrument 41), the 6th laser instrument 46 laser axis identical with laser instrument 41 transmit directions and transmitting is parallel in same plane, and this plane is perpendicular to the plane at the triangle place of the centre of sphere line formation of three spheroids 6.
Can determine thus the relative position relation between laser axis and three spheroids 6 of six laser instruments (41,42,43,44,45,46) transmittings, be designated as T1.
The method that adopts the device of above-mentioned measurement carbon fibre composite vehicle body to measure carbon fibre composite vehicle body specifically comprises the following steps:
1. carbon fibre composite vehicle body 7 is placed on workbench 1, and is positioned at four groups of identical motion-sensing unit 2, three spheroids 6 of Laser emission assembly (are designated as to A place) in a certain position and realize at 3 with the surface of carbon fibre composite vehicle body 7 contact.
2. six laser instruments (41,42,43,44,45,46) are all opened, then driven four slide units 212 to drive four PSD sensor arraies 23 to carry out rectilinear motion until terminal from the off simultaneously.
As long as certain PSD sensor array 23 senses after laser, suspend the rectilinear motion of this slide unit 212, measure this laser induced in this PSD sensor array 23 position on corresponding PSD sensor 231, can be obtained the locus of this laser induced point by this position and above-mentioned S.
The final locus that obtains six laser induced points.
3. in six laser induced points, there are five laser induced points to be positioned at same plane, are not positioned at the laser induced point (being designated as Z6) that is the 6th laser instrument 46 of this plane.
Five laser induced looking from Z6 to this plane that residue are positioned to same plane are designated as p0, p1, p2, p3, p4 by counter clockwise direction minute.
Light from p1, line p1 and p4, be designated as L line. Line p2 and p3, be designated as N line. If L line parallel is in N line, L line is A line, and N line is B line.
Otherwise, lighting from p2, line p2 and p0, be designated as L line. Line p3 and p4, be designated as N line. If L line parallel is in N line, L line is A line, and N line is B line.
Otherwise, lighting from p3, line p3 and p1, be designated as L line. Line p4 and p0, be designated as N line. If L line parallel is in N line, L line is A line, and N line is B line.
Otherwise, lighting from p4, line p4 and p2, be designated as L line. Line p0 and p1, be designated as N line. If L line parallel is in N line, L line is A line, and N line is B line.
Otherwise, lighting from p0, line p0 and p3, be designated as L line. Line p1 and p2, be designated as N line. If L line parallel is in N line, L line is A line, and N line is B line.
Can determine thus A line and B line, the laser induced point (being designated as Z5) that is the 5th laser instrument 45 on A line and B line not in five laser induced points.
Look to this plane from Z6, from Z5, be followed successively by the laser induced point (being designated as Z1) of laser instrument 41, the laser induced point (being designated as Z2) of laser instrument 42, the laser induced point (being designated as Z3) of laser instrument 43, the laser induced point (Z4) of laser instrument 44 according to the laser induced point counterclockwise occurring.
The locus S1 of the laser axis of six laser instruments (41,42,43,44,45,46) transmitting can be determined thus, then in conjunction with above-mentioned T1, the locus X1 of three bulbs 6 in A place can be obtained.
4. three spheroids 6 of Laser emission assembly (are designated as to B place) in another location and realize at 3 with the surface of carbon fibre composite vehicle body 7 and contact; Repeating step 2. and 3., thereby calculate the locus X2 of three bulbs 6 in B place.
5. repeating step 4., obtain three bulbs 6 in some places locus X3, X4 ..., Xn.
By X1, X2 ..., Xn can obtain the appearance and size data of carbon fibre composite vehicle body 7.
The actual three coordinate measuring machine that is equal to an employing bulb gauge head of above-mentioned measuring method is measured carbon fibre composite vehicle body 7 surfaces, calculate the sphere centre coordinate of the tangent bulb gauge head in several and carbon fibre composite vehicle body 7 surfaces, thereby obtain carbon fibre composite vehicle body 7 appearance and size data.
Claims (1)
1. a device of measuring carbon fibre composite vehicle body, is characterized in that: by a workbench (1), four groups of identical motion-sensing unit (2) and Laser emission module compositions;
Every group of motion-sensing unit (2) is by a linear motion unit (21), a grating (22) and a PSD sensor array (23) composition; Described linear motion unit (21) is by rectilinear orbit (211) and carry out straight-line slide unit (212) along described rectilinear orbit (211) and form; Described PSD sensor array (23) is fixedly mounted on described slide unit (212), and each PSD sensor array (23) is positioned at PSD sensor (231) composition of same plane by several photosurfaces;
The position relationship of described four PSD sensor arraies (23) and described workbench (1) meets the following conditions: in the time that the slide unit (212) on four linear motion units (21) carries out rectilinear motion, be fixedly mounted on four sides of a square body of plane and described workbench (1) upper surface formation and the geometrical relationship of bottom surface of the inswept formation of photosurface of four the PSD sensor arraies (23) on slide unit (212);
Described Laser emission assembly comprises a substrate (3), is fixedly mounted on four laser instruments (41,42,43,44) of substrate (3) top, is fixedly mounted on three legs (5) of substrate (3) below and is arranged on the spheroid (6) of each leg (5) bottom;
The position relationship of described four laser instruments (41,42,43,44) meets the following conditions: the transmit direction of described four laser instruments (41,42,43,44) is all towards PSD sensor array (2); The laser axis of described four laser instruments (41,42,43,44) transmitting is positioned at same plane, and this plane parallel is in the plane at the triangle place of the centre of sphere line formation of described three spheroids (6); Described four laser instruments (41,42,43,44) are divided into two groups, the laser axis conllinear of two laser instruments transmittings in every group, two groups of two line parallels that laser instrument forms;
Described Laser emission assembly also comprises the 5th laser instrument (45) that is fixedly mounted on substrate (3) top; The position relationship of described the 5th laser instrument (45) meets the following conditions: two bars of lines that the laser axis of described the 5th laser instrument (45) transmitting is positioned at the laser axis place plane of above-mentioned four laser instruments (41,42,43,44) transmitting and forms perpendicular to described two groups of laser instruments; The transmit direction of described the 5th laser instrument (45) is towards PSD sensor array (2) and two bars of lines that do not form towards described two groups of laser instruments;
Described Laser emission assembly also comprises the 6th laser instrument (46) that is arranged on any top of above-mentioned four laser instruments (41,42,43,44); The position relationship of described the 6th laser instrument (46) meets the following conditions: described the 6th laser instrument (46) is parallel in same plane with the laser instrument transmit direction laser axis identical and transmitting of its below, and this plane is perpendicular to the plane at the triangle place of the centre of sphere line formation of described three spheroids (6).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610059316.7A CN105606037B (en) | 2016-01-28 | 2016-01-28 | A kind of device for measuring carbon fibre composite vehicle body |
| PCT/CN2016/110297 WO2017128885A1 (en) | 2016-01-28 | 2016-12-16 | Device for measuring carbon fiber composite vehicle bodies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610059316.7A CN105606037B (en) | 2016-01-28 | 2016-01-28 | A kind of device for measuring carbon fibre composite vehicle body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105606037A true CN105606037A (en) | 2016-05-25 |
| CN105606037B CN105606037B (en) | 2018-02-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610059316.7A Active CN105606037B (en) | 2016-01-28 | 2016-01-28 | A kind of device for measuring carbon fibre composite vehicle body |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105606037B (en) |
| WO (1) | WO2017128885A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017128885A1 (en) * | 2016-01-28 | 2017-08-03 | 江苏理工学院 | Device for measuring carbon fiber composite vehicle bodies |
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- 2016-01-28 CN CN201610059316.7A patent/CN105606037B/en active Active
- 2016-12-16 WO PCT/CN2016/110297 patent/WO2017128885A1/en active Application Filing
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| CN1645042A (en) * | 2005-01-12 | 2005-07-27 | 天津大学 | Laser three-dimensional color scanning digital method and digital equipment |
| US20070046663A1 (en) * | 2005-08-24 | 2007-03-01 | Hartmut Brinkmann | Method of determining the shape of a dental technology object and apparatus for per-forming the method |
| CN201622065U (en) * | 2009-12-09 | 2010-11-03 | 麻伟明 | Automatic dynamic overall dimension measuring device for vehicles |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2017128885A1 (en) | 2017-08-03 |
| CN105606037B (en) | 2018-02-06 |
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