CN203274694U - Telescopic large free-form surface on machine measurement device - Google Patents
Telescopic large free-form surface on machine measurement device Download PDFInfo
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- CN203274694U CN203274694U CN 201320276252 CN201320276252U CN203274694U CN 203274694 U CN203274694 U CN 203274694U CN 201320276252 CN201320276252 CN 201320276252 CN 201320276252 U CN201320276252 U CN 201320276252U CN 203274694 U CN203274694 U CN 203274694U
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- displacement sensor
- laser displacement
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- telescopic rod
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Abstract
本实用新型公开了一种大型自由曲面在机测量装置，包括弹性元件、伸缩杆、套筒、光栅尺、激光位移传感器、支撑脚、喷墨标记头以及球形滚轮；伸缩杆位于套筒内，伸缩杆上安放有光栅尺；伸缩杆的一端与套筒端部之间安放有弹性元件，伸缩杆的另一端连接支撑脚的一端，支撑脚的另一端连接球形滚轮，支撑脚的中部安放有激光位移传感器，激光位移传感器与球形滚轮之间安放有喷墨标记头。本实用新型采用激光位移传感器和光栅尺结合的方式实现测量，激光位移传感器测量曲面测量点相对于其端面的距离，光栅尺测量激光位移传感器的位移，结合两距离便可精准计算得到测量点相对于基准点的距离；能够根据现场不同的测量要求来改变安放方式，特别适用于各种大型复杂曲面的现场测量。
The utility model discloses an on-machine measuring device for a large free-form surface, which comprises an elastic element, a telescopic rod, a sleeve, a grating ruler, a laser displacement sensor, a supporting foot, an inkjet marking head and a spherical roller; the telescopic rod is located in the sleeve, A grating scale is placed on the telescopic rod; an elastic element is placed between one end of the telescopic rod and the end of the sleeve, the other end of the telescopic rod is connected to one end of the supporting leg, the other end of the supporting leg is connected to a spherical roller, and the middle part of the supporting leg is placed with a A laser displacement sensor, an inkjet marking head is arranged between the laser displacement sensor and the spherical roller. The utility model realizes the measurement by combining the laser displacement sensor and the grating ruler. The laser displacement sensor measures the distance of the measuring point on the curved surface relative to its end face, and the grating ruler measures the displacement of the laser displacement sensor. Combining the two distances, the relative distance of the measuring point can be accurately calculated. The distance from the reference point; the installation method can be changed according to different measurement requirements on site, especially suitable for on-site measurement of various large and complex surfaces.
Description
Technical field
The utility model belongs to advanced field of measuring technique, is specifically related to a kind of large-scale free form surface on-machine measurement device.
Background technology
Make the development of process technology along with the modern times, free form surface class part is in an increasingly wide range of applications in fields such as aviation, navigation and automobiles, this measurement to free form surface class workpiece is had higher requirement, and measuring accuracy and efficient directly have influence on precision and the efficient of part processing.
The survey instrument that uses in industrial process at present mostly is three coordinate measuring machine, what this traditional measurement mechanism adopted is contact measuring head and off-line measurement mode, there is length consuming time in measuring process, needs the problems such as secondary location, processing and measurement effectively can't be combined, more and more can not satisfy growing measurement demand.
For large complicated carved class workpiece (for example propeller blade of diameter more than 10 meters), enormous size often, and surperficial operating mode is complicated, can't measure with traditional measuring machine, and for the large-scale rotation class workpiece that contains inner chamber, traditional contact type measurement machine can't be deep in inner chamber especially and measure.Development along with non-contact measuring technology, laser measuring technique is as developing a kind of new technology rapidly, become a kind of important technological means of Spatial data capture and obtained using widely, but also there is the restriction of range and effective range in the pointolite laser displacement sensor, in some scopes, its measuring accuracy is higher, exceeds certain scope, and its error also is linear growth.
The utility model content
Based on the problems referred to above, in order to satisfy the workpiece calibration problem in large complicated carved processing and manufacturing field, the utility model provides a kind of laser measuring device for measuring of extension type, realizes large complicated carved accurate measurement, has that precision is high, efficient is high and adaptable characteristics.
A kind of large-scale free form surface on-machine measurement device comprises flexible member, expansion link, sleeve, grating scale, laser displacement sensor, feet, ink-jet mark head and spherical roller;
Wherein, expansion link is positioned at sleeve, lays grating scale on expansion link; Lay flexible member between one end of expansion link and sleeve ends, the other end of expansion link stretches out the end that sleeve connects feet, the other end of feet connects spherical roller, laser displacement sensor is laid at the middle part of feet, lays ink-jet mark head between the laser displacement sensor on feet and spherical roller.
Further, the laser beam sent of laser displacement sensor and the dead in line of expansion link.
Further, ink-jet mark head is positioned on the laser beam straight line that laser displacement sensor sends, and ink-jet mark head is not for stopping the Open architecture of laser beam projection and reflected light path.
Further, laser displacement sensor with respect to the distance of spherical roller in the high-precision measurement range of laser displacement sensor.
Further, laser displacement sensor adopts the pointolite laser displacement sensor.
Further, the inside surface of sleeve processing gathering sill.
Further, the scale grating of grating scale is placed in the surface of expansion link, and the grating reading head of grating scale is placed on sleeve.
In general, the above technical scheme of conceiving by the utility model compared with prior art, technique effect of the present utility model is embodied in:
The utility model adopts the array mode of grating scale and laser displacement sensor to obtain the volume coordinate of tested point, and laser displacement sensor is as main surveying instrument, and grating scale is as auxiliary measuring instrument.Due to laser displacement sensor in some scopes, its measuring accuracy is higher, exceed certain scope, its error also is linear growth, therefore the utility model adopts the profiling mode, spherical roller on feet contacts with surface of the work, makes the laser displacement sensor that is positioned on feet follow the motion of curve surface of workpiece variation tendency, guarantees that laser displacement sensor is in measuring range in high accuracy always.Laser displacement sensor is measured measurement of curved surface point with respect to the distance of its end face, the displacement of optical grating ruler measurement laser displacement sensor, but obtain measurement point with respect to the distance of reference point in conjunction with two apart from just accurate calculation.Choose suitable roller diameter, can adapt to operating mode complicated on the free curve surface work pieces surface fully.The utility model can be placed on machine tool chief axis or special measuring machine, be specially adapted to various large complicated carved in-site measurements, can the measurement different according to the scene require to change the mode of laying, lay vertically downward, lay vertically upward, level is laid and lay at the angle of inclination, strong adaptability.Be different from the mode that adopts the contact chaining pin on the traditional measurement device, what the utility model adopted is contactless laser measurement mode, has reduced lathe and has returned the action of lifting, and can greatly improve measuring accuracy and efficient.
Further, the utility model is placed in ink-jet mark head on the projecting light path of laser displacement sensor, realize ink gun to the precise marking of measurement point, and ink-jet mark head is designed to Open architecture, avoid laser beam projection and reflected light path to be stopped.
Further, the assurance laser displacement sensor is laid distance in the high-precision measurement range of laser displacement sensor with respect to spherical roller, can effectively improve measuring accuracy.
Description of drawings
Fig. 1 is the one-piece construction figure of the telescopic laser measuring device for measuring of the utility model.
Fig. 2 be the telescopic laser measuring device for measuring of the utility model apart from schematic diagram calculation.
In institute's drawings attached, identical Reference numeral is used for representing identical element or structure, wherein:
1-flexible member 2-expansion link 3-sleeve 4-grating scale 5-laser displacement sensor 6-feet 7-ink-jet mark head 8-spherical roller
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.In addition, below in each embodiment of described the utility model involved technical characterictic just can mutually not make up as long as consist of each other conflict.
Technical thought of the present utility model is: the measurement of coordinates of point adopts the mode of laser displacement sensor and grating scale combination, laser displacement sensor is based on the laser triangulation principle, the laser beam that laser displacement sensor sends projects testee surface and reflects, light activated element in sensor determines that by receiving reflection ray the measured point is to the distance of optical flame detector, what grating scale recorded is that the displacement of expansion link in sleeve is the displacement of laser displacement sensor, both combines the locus that just can determine measuring point.
Based on above-mentioned thinking, the utility model proposes a kind of telescopic laser measuring device for measuring, as shown in Figure 1, this device comprises flexible member 1, expansion link 2, sleeve 3, grating scale 4, laser displacement sensor 5, feet 6, ink-jet mark head 7 and spherical roller 8.Wherein, be provided with expansion link 2 in sleeve 3, lay grating scale 4 on expansion link 2; Lay flexible member 1 between one end of expansion link 2 and sleeve 3 ends, the other end of expansion link 2 stretches out the end that sleeve 3 connects feet 6, the other end of feet 6 connects spherical roller 8, laser displacement sensor 5 is laid at the middle part of feet 6, lays ink-jet mark head 7 between the laser displacement sensor 5 on feet 6 and spherical roller 8.
The dead in line of the laser beam that laser displacement sensor 5 sends and expansion link 2, to guarantee expansion link when its axis turns round, laser beam is beaten all the time in same point.Laser displacement sensor 5 is laid distance in the high-precision measurement range of laser displacement sensor with respect to spherical roller.In order to realize that 7 pairs of measurement points of ink-jet mark head carry out accurately mark, ink-jet mark head 7 need to be arranged on the laser beam straight line that laser displacement sensor 5 sends, the laser beam that laser displacement sensor 5 sends is passed ink-jet mark head 7 projection measurement points, the reflected light of measurement point passes that ink-jet mark head 7 is rear to be received by laser displacement sensor 5, during specific implementation, ink-jet mark head 7 is designed to guarantee the Open architecture that laser beam projection and reflected light path are not stopped, for example C type, U-shaped or based on the modification replacing structure of this principle.
This telescopic laser measuring device for measuring is placed on machine tool chief axis or measuring machine, and the mode of laying can be vertically downward and lays, lays vertically upward, level is laid and the certain angle that tilts is laid.When measurement mechanism is laid vertically downward, feet 6 withstands on surface of the work vertically downward, and expansion link 2 is pressed in sleeve 3, and compression elastic element 1 is in compressive state all the time under working condition, this moment, spherical roller 8 contacted with surface of the work O point, the A point that laser beam is beaten at surface of the work.How O point and A point distance is very near, and no matter A point fluctuations, can both guarantee that the A point is within the high-precision measurement range of laser displacement sensor.during measurement, spherical roller 8 rolls at surface of the work, can drive expansion link 2 when running into concave-convex curved surface moves in sleeve 3, when lathe or measuring machine control and measure device move to the tested point top along surface of the work, send control signal, laser feeler and grating scale be reading out data simultaneously, grating scale 4 is measured the distance that expansion link moves in sleeve, laser passes device 5 and measures tested point to the distance of laser head, data have just obtained the space Z coordinate of measuring point through synthetic processing, after a point measurement finishes, ink gun just carries out the ink-jet mark to this point, just begin to measure next point after mark is complete, until all point measurements are complete.
When the telescopic laser measuring device for measuring of the utility model is measured, the Computing Principle of coordinate as shown in Figure 2: for the convenience of calculating, be arranged on reference to reference field the end face that expansion link 2 stretches out sleeve 3, laser displacement sensor 5 is measured tested point to the distance h 1 of laser displacement sensor end face, grating scale 4 is measured the laser displacement sensor end face to the distance h 2 of reference datum, and tested point is to the distance H=h1+h2 of reference field.When laser measuring device for measuring was installed vertically downward, the H value had just been reacted the coordinate of measuring point on the Z direction of space, then in conjunction with the coordinate of laser displacement sensor on X, Y-direction of lathe record, and the mode by the software match just can access the three-dimensional model of curved surface.
Those skilled in the art will readily understand; the above is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320276252 CN203274694U (en) | 2013-05-20 | 2013-05-20 | Telescopic large free-form surface on machine measurement device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320276252 CN203274694U (en) | 2013-05-20 | 2013-05-20 | Telescopic large free-form surface on machine measurement device |
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| CN203274694U true CN203274694U (en) | 2013-11-06 |
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| CN 201320276252 Expired - Fee Related CN203274694U (en) | 2013-05-20 | 2013-05-20 | Telescopic large free-form surface on machine measurement device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103292732A (en) * | 2013-05-20 | 2013-09-11 | 华中科技大学 | Method and telescopic device for measuring large free-form surfaces in on-machine manner |
| CN105326266A (en) * | 2015-11-06 | 2016-02-17 | 中山涛美远东日用制品有限公司 | Driving device applied to automatic rocking chair |
| CN105361531A (en) * | 2015-11-06 | 2016-03-02 | 中山涛美远东日用制品有限公司 | an automatic rocking chair |
-
2013
- 2013-05-20 CN CN 201320276252 patent/CN203274694U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103292732A (en) * | 2013-05-20 | 2013-09-11 | 华中科技大学 | Method and telescopic device for measuring large free-form surfaces in on-machine manner |
| CN103292732B (en) * | 2013-05-20 | 2016-05-25 | 华中科技大学 | A kind of large-scale free form surface on-machine measurement device of extension type |
| CN105326266A (en) * | 2015-11-06 | 2016-02-17 | 中山涛美远东日用制品有限公司 | Driving device applied to automatic rocking chair |
| CN105361531A (en) * | 2015-11-06 | 2016-03-02 | 中山涛美远东日用制品有限公司 | an automatic rocking chair |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20210520 |
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| CF01 | Termination of patent right due to non-payment of annual fee |