CN100523720C - Optical non-contact three-dimensional measuring instrument - Google Patents
Optical non-contact three-dimensional measuring instrument Download PDFInfo
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- CN100523720C CN100523720C CNB200610046838XA CN200610046838A CN100523720C CN 100523720 C CN100523720 C CN 100523720C CN B200610046838X A CNB200610046838X A CN B200610046838XA CN 200610046838 A CN200610046838 A CN 200610046838A CN 100523720 C CN100523720 C CN 100523720C
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Abstract
The invention relates to a measuring instrument, especially the optical non-contact three dimensional shape measurement instrument. It comprises the frame, two dimensional displacement platform at the front center of frame and adjustable along the X axis and Y axis, and the beam at the rear of two dimensional displacement platform, wire laser source opposite to two side arms of the beam on which connected with two long optical imaging part, with its optical axial line symmetrical in angle and on the same surface with the optical axial line of the wire laser source. It can measure non-contact intersection with the thickness difference no big than 20mm, with wide application, quick measurement speed, low cost, high precision, with high economic benefit and social benefit.
Description
Technical field
The present invention relates to a kind of measuring instrument, relate in particular to a kind of optical non-contact three-dimensional measuring instrument that utilizes laser technology that the object cross sectional shape of variable cross section thickness is measured.
Background technology
In the object of variable cross section thick section shape is measured (such as the commentaries on classics of aeromotor and gas turbine, stator blade etc.) adopted the method for measuring its cross section model mensuration, two light to be arranged with mensuration, three dimension coordinate measurement method etc. usually in the past.
The model mensuration is a kind of the most classical curve form method of inspection, it is to utilize the cross section parameter when designing to make the one dimension model in several cross sections, judges its shape difference by the light transmission capacity of observing between its section template and the measured section in corresponding sectional position.This method is simple, directly perceived, is the most frequently used contact measuring means in the commercial production now.Owing to need judge light transmission capacity by human eye during its check, can't accurately provide its profile data.Different cross sectional shape needs different section template, being in great demand of model, and cost is very high.
Two light are to utilize the roller of contact at measured surface with mensuration, when section thickness changes, roller drags a probe and moves back and forth, a branch of projection ray projects to one with the head of probe and draws and have on the screen of respective cross-section shape, in the time of in the position of probe falls into the tolerance range that screen draws, think that measured section is qualified.This method testing accuracy is higher, need not to make different models at different objects, but its adjustment is difficult, the device is very big, needs lucifuge work.
The three dimension coordinate measurement method is a kind of general mechanical component form measuring method, it is the position of determining spatial point in Cartesian coordinates by a probe that moves, when probe touches measured piece, after probe is stressed, can trigger three coordinate informations that measuring machine writes down current point.This method measuring accuracy height is not limited by the shape of measured piece, is the measurement mechanism of widespread use in the commercial measurement.Just because of its high measuring accuracy makes that also it is higher to environment requirement, the temperature and humidity that need control environment.Same restriction owing to its measuring method, its Measuring Time is long, system cost is higher, is difficult to adapt to the production run product quality and detects.
Summary of the invention
The present invention be directed to that the problems referred to above put forward, its objective is provide a kind of simple in structure, regulation and control are convenient accurately, operation is reliable, measuring speed is fast, noncontact, low cost, and can reach the optical non-contact three-dimensional measuring instrument that is equivalent to three dimension coordinate measurement method gained data.
To achieve these goals, the technical scheme of technical solution problem of the present invention: comprise frame, be located at the frame front center can and be located at the crossbeam at two-dimentional transfer table rear portion at the two-dimentional transfer table of X-axis and Y direction adjustment, be provided with the line laser light source portion on the two side arms of its described crossbeam relatively, two surpluses be connected on the described crossbeam apart from optical imagery portion, and its optical axial becomes symmetry angle with the optical axial of line laser light source portion and on same plane.
Described line laser light source portion is made up of the semiconductor laser that has the condenser of adjusting the position, cylindrical mirror, baffle plate and laser instrument shell, semiconductor laser is located at the laser instrument outer casing back and is fixed by holding screw, cylindrical mirror is relative with semiconductor laser to be located in the laser instrument shell front end groove suitable with it, by baffle plate by screw retention.
Described surplus is made up of imaging lens, switching tube and ccd video camera apart from optical imagery portion, connects by C type interface between them.
Described two surpluses are between 60 °～80 ° apart from the symmetry angle of the optical axial of the optical axial of optical imagery portion and line laser light source portion.
The present invention compared with prior art has following advantage and effect:
Owing to adopted line laser technology, two-dimentional transfer table, two identical surpluses to install, realized thickness difference is no more than 20mm the measurement of the shape of the contactless cross section thickening degree object that length and width need not to limit apart from optical imagery portion and line laser light source portion symmetry.Applied range of the present invention, measuring speed are fast, noncontact, low cost, high precision, and can provide three coordinate datas that are equivalent to three coordinate machines, have very high economic benefit and social benefit.
Description of drawings
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments:
Fig. 1 is the main TV structure synoptic diagram of optical non-contact three-dimensional measuring instrument of the present invention.
Fig. 2 is the plan structure synoptic diagram of optical non-contact three-dimensional measuring instrument of the present invention.
Fig. 3 is the A-A sectional structure synoptic diagram of LASER Light Source of the present invention portion.
Wherein: frame 1, crossbeam 2, two-dimentional transfer table 3, Y-axis adjusting lever 4, X-axis adjusting lever 5, side arm 6, line laser light source portion 7, surplus be apart from optical imagery portion 8, ccd video camera 9, switching tube 10, imaging lens 11, semiconductor laser 12, condenser 13, cylindrical mirror 14, baffle plate 15, groove 16, laser instrument shell 17.
Embodiment
As Fig. 1, Fig. 2 and shown in Figure 3ly the present invention includes frame 1, be located at frame 1 front central place, can by X-axis adjusting lever 5 X-direction, by Y-axis adjusting lever 4 at the two-dimentional transfer table 3 of Y direction adjustment and be located at the crossbeam 2 at two-dimentional transfer table 3 rear portions, be provided with line laser light source portion 7 relatively on the two side arms 6 of its described crossbeam 2, by being bolted on the crossbeam 2, its optical axial becomes symmetry angle with the optical axial of two line laser light source portion 7 be 60 ° and on same plane apart from optical imagery portion 8 for two surpluses.
Described line laser light source portion 7 is made up of the semiconductor laser 12 that has the condenser 13 of adjusting the position, cylindrical mirror 14, baffle plate 15 and laser instrument shell 17, semiconductor laser 12 is located at laser instrument shell 17 rear ends and is fixed by holding screw, cylindrical mirror 14 and semiconductor laser 12 relative being located in the laser instrument shell 17 front ends groove 16 suitable with it, by baffle plate 15 by screw retention.
Described surplus is made up of imaging lens 11, switching tube 10 and ccd video camera 9 apart from optical imagery portion 8, connects by C type interface between them.
As Fig. 1, Fig. 2 and shown in Figure 3ly the present invention includes frame 1, be located at frame 1 front central place, can by X-axis adjusting lever 5 X-direction, by Y-axis adjusting lever 4 at the two-dimentional transfer table 3 of Y direction adjustment and be located at the crossbeam 2 at two-dimentional transfer table 3 rear portions, be provided with line laser light source portion 7 relatively on the two side arms 6 of its described crossbeam 2, by on the bolt crossbeam 2, its optical axial becomes symmetry angle with the optical axial of two line laser light source portion 7 be 80 ° and on same plane apart from optical imagery portion 8 for two surpluses.All the other are with embodiment 1.
As Fig. 1, Fig. 2 and shown in Figure 3ly the present invention includes frame 1, be located at frame 1 front central place, can by X-axis adjusting lever 5 X-direction, by Y-axis adjusting lever 4 at the two-dimentional transfer table 3 of Y direction adjustment and be located at the crossbeam 2 at two-dimentional transfer table 3 rear portions, be provided with line laser light source portion 7 relatively on the two side arms 6 of its described crossbeam 2, by on the bolt crossbeam 2, its optical axial becomes symmetry angle with the optical axial of two line laser light source portion 7 be 70 ° and on same plane apart from optical imagery portion 8 for two surpluses.All the other are with embodiment 1.
During concrete the use:
Testee is placed on the two-dimentional transfer table 3, adjust the Y-axis adjusting lever 5 of two-dimentional transfer table 3, make testee surface vertical with the optical axial direction of line laser light source portion 7 (surplus overlaps with the optical axial intersection point of line laser light source portion 7 apart from the optical axial of optical imagery portion 8), can begin to measure.The light that sends from line laser light source portion 7 projects on the surface of testee, the line laser bundle is modulated by object surface shape, can be observed the line laser bundle by the surplus that becomes 70 ° of angles with the optical axial direction of line laser light source portion 7 apart from optical imagery portion 8 and is subjected to the shape modulation of body surface to produce distortion.The line laser bundle of this distortion after 8 imagings of optical imagery portion, obtains the profile information of this face through surplus.In like manner can obtain the deformation information of another side by another group line laser light source portion 7 and surplus apart from optical imagery portion 8.After measurement was finished in a position, the X-axis adjusting lever 5 that can adjust two-dimentional transfer table 3 continued to measure to next measuring position, and circulation is gone down, and finishes until measure.
Can carry out digitized processing to the analog video signal of ccd video camera 9 by image pick-up card at last, can on computer monitor, carry out Direct observation to measured object, also can carry out image processing software and analyze automatically, to obtain testee single face or two-sided information.
To adopt the present invention rupture disk impression residual thickness to be carried out the example that is applied as of non-contact measurement, because the rupture disk impression thickness direction the wideest very narrow 1mm that is no more than, it is shaped as the square groove, flute length long (surpassing 40mm), during again because of the rupture disk moulding, also need carry out the sphere stretch processing, its groove has bigger distortion.Therefore, it is very difficult adopting the degree of depth or residual thickness at the bottom of traditional measuring method measuring flume.Using the present invention only needs rupture disk is fixed on the two-dimentional transfer table 3, make tested rupture disk surface vertical with the optical axial direction of two line laser light source portion 7, the light that sends from line laser light source portion 7 projects on the flute surfaces of rupture disk, again two surpluses that become 75 ° of angles with the optical axial direction of line laser light source portion 7 are aimed at the two sides groove of rupture disk respectively apart from optical imagery portion 8, the line laser bundle is can be observed distortion that line laser bundle be subjected to the shape modulation generation of rupture disk flute surfaces by surplus apart from optical imagery portion 8 by rupture disk flute surfaces shape modulation.The line laser bundle of this distortion after 8 imagings of optical imagery portion, can obtain the profile information of rupture disk groove through surplus.After measurement was finished in a position, the X-axis adjusting lever 5 that can adjust two-dimentional transfer table 3 continued to measure to next measuring position, and circulation is gone down, and finishes until measure.By image pick-up card the analog video signal of ccd video camera 9 is carried out digitized processing at last, can on computer monitor, carry out Direct observation the rupture disk groove.
Claims (4)
1, a kind of optical non-contact three-dimensional measuring instrument, comprise frame (1), be located at the two-dimentional transfer table (3) that to adjust in X-axis and Y direction at frame (1) front central place and the crossbeam (2) of being located at two-dimentional transfer table (3) rear portion, it is characterized in that being provided with line laser light source portion (7) relatively on the two side arms (6) of described crossbeam (2), two surpluses be connected on the described crossbeam (2) apart from optical imagery portion (8), and its optical axial becomes symmetry angle with the optical axial of line laser light source portion (7) and on same plane.
2, optical non-contact three-dimensional measuring instrument according to claim 1, it is characterized in that described line laser light source portion (7) is made up of the semiconductor laser (12) that has the condenser (13) of adjusting the position, cylindrical mirror (14), baffle plate (15) and laser instrument shell (17), semiconductor laser (12) is located at laser instrument shell (17) rear end and is fixed by holding screw, cylindrical mirror (14) is relative with semiconductor laser (12) to be located in laser instrument shell (17) the front end groove (16) suitable with it, by baffle plate (15) by screw retention.
3, optical non-contact three-dimensional measuring instrument according to claim 1 is characterized in that described surplus is made up of imaging lens (11), switching tube (10) and ccd video camera (9) apart from optical imagery portion (8), passes through the connection of C type interface between them.
4, optical non-contact three-dimensional measuring instrument according to claim 1 is characterized in that described two surpluses are between 60 °～80 ° apart from the symmetry angle of the optical axial of the optical axial of optical imagery portion (8) and line laser light source portion (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610046838XA CN100523720C (en) | 2006-06-08 | 2006-06-08 | Optical non-contact three-dimensional measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610046838XA CN100523720C (en) | 2006-06-08 | 2006-06-08 | Optical non-contact three-dimensional measuring instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101086442A CN101086442A (en) | 2007-12-12 |
| CN100523720C true CN100523720C (en) | 2009-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB200610046838XA Expired - Fee Related CN100523720C (en) | 2006-06-08 | 2006-06-08 | Optical non-contact three-dimensional measuring instrument |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102301201B (en) * | 2009-02-18 | 2013-02-27 | 旭硝子株式会社 | Method for measuring external shape of rectangular plate-like object, and method for calibrating relative position of image-capturing means |
| JP5602392B2 (en) * | 2009-06-25 | 2014-10-08 | キヤノン株式会社 | Information processing apparatus, information processing method, and program |
| CN102829447B (en) * | 2012-08-10 | 2014-04-02 | 昆山市和博电子科技有限公司 | Three-point and one-line type light source mounting mechanism |
| CN103512495A (en) * | 2013-06-04 | 2014-01-15 | 国家电网公司 | Device and method for automatically detecting boundary dimension of intelligent power meter |
| CN107782921A (en) * | 2016-08-26 | 2018-03-09 | 均豪精密工业股份有限公司 | Array probe guides educational system and its method automatically |
| CN112504159B (en) * | 2020-10-27 | 2022-04-08 | 成都飞机工业（集团）有限责任公司 | Device and method for measuring three-dimensional shape of inner cavity of variable-section cylindrical part |
| CN114034259B (en) * | 2022-01-11 | 2022-06-10 | 成都中科翼能科技有限公司 | Blade tip clearance measuring system and method based on double optical fiber probes |
| CN114877804A (en) * | 2022-05-18 | 2022-08-09 | 康佳集团股份有限公司 | Workpiece point location three-dimensional coordinate acquisition device, method and system |
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- 2006-06-08 CN CNB200610046838XA patent/CN100523720C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN101086442A (en) | 2007-12-12 |
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