CN105716547A - Rapid measurement device and method for planeness of mechanical workpiece - Google Patents
Rapid measurement device and method for planeness of mechanical workpiece Download PDFInfo
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- CN105716547A CN105716547A CN201610247461.8A CN201610247461A CN105716547A CN 105716547 A CN105716547 A CN 105716547A CN 201610247461 A CN201610247461 A CN 201610247461A CN 105716547 A CN105716547 A CN 105716547A
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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
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/30—Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces
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Abstract
The invention discloses a rapid measurement device and method for the planeness of a mechanical workpiece and belongs to the technical field of photoelectric measurement. The rapid measurement device comprises a binocular positioning system, and a laser plane scanning device and a PSD (Phase Sensitive Demodulator) position sensor which are arranged on a plane to be detected of the mechanical workpiece, and further comprises a wireless data transmission unit, a data acquisition unit and a data processing unit which are connected in sequence; the PSD position sensor is arranged on a working surface to be detected; the height difference between the point and a laser reference surface can be detected when a laser scanning surface scans the PSD position sensor; the binocular positioning system can be used for acquiring images of the PSD position sensor at different angles, and obtaining space position information of the PSD position sensor through image processing calculation; and measured height information and space position information of each point can be subjected to data processing through the data acquisition unit and the data processing unit, so that the planeness of the detected workpiece can be obtained. The device is reasonable in structural design and simple and convenient to use; and the method is simple to operate, rapid in measurement speed, high in efficiency and wide in range.
Description
Technical field
The invention belongs to technical field of electro-optical measurement, be specifically related to a kind of mechanical workpieces flatness rapid measurement device and method.
Background technology
The detection of mechanical workpieces flatness and control to have important function in workpiece process, only controls the flatness of parts, the precision of complete machine just can be made to be improved, and therefore the measurement of flatness is of crucial importance in the industrial production.
Current existing method measuring flatness and equipment are divided into direct method, indirect method, combined method.These methods are respectively arranged with pluses and minuses, but these methods also all can not carry out scene, carry out the measurement of planeness quickly, in high precision, conveniently, on a large scale at present.Current method is all need to arrange suitable measurement arrangement form in advance mostly, is then manually entered the positional information measuring point, could obtain final flatness information.This is it is possible to bring certain measurement error (giving the basic arrangement form measuring flatness in GB11337-2004 flatness Error Measuring) into.Further, since it is desired that be manually entered measurement positional information, so there is the deficiencies such as measuring speed is slow, poor real, positional precision are low, measure dot number is limited, it is difficult to meet the needs of on-the-spot quick, online, convenient, the high-acruracy survey flatness of machining.
Laser planeness detector device for Chinese laser device company (HamarLaserInstrumentsInc), it is with sweeping laser face for datum level, the basis of this datum level is measured the plane each point to be measured relative altitude relative to datum level, measured data are processed the flatness just obtaining plane to be measured.But in this system not one can the device of real-time positioning institute point position, can only measure on the point arranged in advance, and it is manually entered measurement dot position information, flatness information could be obtained, so there is the shortcoming that measure dot number is limited, and limit the speed of its measurement and the convenience of use, and significantly limit its practicality at machining in-site measurement.
Another is three coordinate measuring machine by the method for the widely used measurement part flatness of factory, it is based on three-dimensional coordinates measurement principle, the measurement space of three coordinate measuring machine it is placed in by testee, obtain the coordinate position of each measuring point on testee, spatial value according to these points, through mathematical operation, obtain tested physical dimension, shape and position.Three coordinate measuring machine is a kind of very practical method of Measuring Object three-dimensional dimension, but owing to needing contactant surface when measuring, it is possible to body surface can there be is certain infringement.Three coordinate measuring machine is huge and expensive, is generally all placed in special measuring room and uses, it is difficult to apply at processing site, it addition, by the restriction of three coordinate measuring machine motion guide rail length, it can be surveyed part dimension and be also affected by relatively larger restriction.
Summary of the invention
For the defect overcoming above-mentioned prior art to exist, it is an object of the invention to provide a kind of mechanical workpieces flatness rapid measurement device and method, this apparatus structure is reasonable in design, easy to use；The method is simple to operate, and measuring speed is fast, efficiency is high, scope is wide.
The present invention is achieved through the following technical solutions:
A kind of mechanical workpieces flatness rapid measurement device, including Locating System with Binocular, and it is placed in the Laser Light Plane Scanning device in mechanical workpieces plane to be measured and PSD position sensor, also include the wireless data transmission unit, data acquisition unit and the data processing unit that are sequentially connected；
Laser Light Plane Scanning device, is used for producing laser scanning plane；
PSD position sensor, for measuring the highly deviated information of the sweeping laser plane of scanning motion；
Locating System with Binocular, for positioning the spatial positional information of PSD position sensor；
Wireless data transmission unit and data acquisition unit, for transmitting incoming data processing unit by highly deviated information and spatial positional information；
Data processing unit, for processing the highly deviated information and spatial positional information that obtain.
Described Locating System with Binocular is made up of video camera I and video camera II.
Described Laser Light Plane Scanning device includes working basic stand, is provided with laser instrument and plane mirror on working basic stand, is arranged over turntable at plane mirror, and turntable top is provided with pentaprism；The laser beam that laser instrument sends reflexes to pentaprism by plane mirror.
By the rotation of turntable, form laser datum plane.
Drive motor it is provided with in turntable.
The invention also discloses the method carrying out the measurement of planeness based on above-mentioned mechanical workpieces flatness rapid measurement device, comprise the following steps:
1) Laser Light Plane Scanning device and PSD position sensor are placed in the plane to be measured of mechanical workpieces, respectively PSD position sensor is placed on any 3 positions of plane to be measured, adjust the angle of Laser Light Plane Scanning device so that the reading of PSD position sensor is zero, it is determined that laser datum face；
2) PSD position sensor is moved on to any one position to be measured, spatial positional information with Locating System with Binocular record PSD position sensor, then with the elevation information of PSD position sensor detection laser plane, after spatial positional information to be recorded and elevation information stably show, move to next position；
3) by step 2) operate the whole measurement being intended to survey；
4) the whole spatial positional information surveyed and elevation information are inputted data processing unit by wireless data transmission unit and data acquisition unit, by the Fitting Calculation, obtain the flatness information of mechanical workpieces plane to be measured.
Compared with prior art, the present invention has following useful technique effect:
The mechanical workpieces flatness rapid measurement device that disclosure is come, including Locating System with Binocular, and it is placed in the Laser Light Plane Scanning device in mechanical workpieces plane to be measured and PSD position sensor, also include the wireless data transmission unit, data acquisition unit and the data processing unit that are sequentially connected；Laser Light Plane Scanning device, is used for producing laser scanning plane, and PSD position sensor is placed on work surface to be measured, and laser scanning plane is inswept, and PSD position sensor just can measure this place difference in height relative to laser datum face；Locating System with Binocular can obtain the image of the PSD position sensor of different angles, by image procossing calculates the spatial positional information that can obtain PSD position sensor；The elevation information of each point recorded and spatial positional information are carried out data through data acquisition unit and data processing unit and processes the flatness that just can draw measured workpiece.This apparatus structure is reasonable in design, use simple, overcome existing method measuring flatness to need manually to gather the defect measuring position data, there is the advantages such as measuring speed is fast, efficiency is high, measurement scope wide, application convenience, may be used for detection such as the flatness of machined surface, the treatment of surfaces of components, machine operation face, platen face, machine tool motion system etc., have broad application prospects in high dimensional accuracy demand fields such as precision optical machinery, Aero-Space manufactures.
Further, the Laser Light Plane Scanning device of the present invention includes working basic stand, working basic stand is provided with laser instrument and plane mirror, the pentaprism reflected parallel that laser instrument gives off laser beam on working basic stand penetrates in basal plane, pentaprism is arranged on a turntable, along with the rotation of turntable just can produce a laser datum plane.Being placed on by working basic stand on measured workpiece, PSD position sensor is placed on work surface to be measured, laser datum plane is inswept, and PSD position sensor just can measure this place difference in height relative to laser datum face.
Further, the Locating System with Binocular of the present invention is made up of video camera I and video camera II, the binocular vision system of two video camera compositions can obtain the image of the PSD position sensor of different angles, by image procossing calculates the spatial positional information that can obtain PSD position sensor.
Mechanical workpieces flatness method for fast measuring disclosed by the invention, Locating System with Binocular is utilized to position the locus measuring point, measurement arrangement form can be set before measuring, measurement process can continuously, arbitrarily change target placement in scope to be measured, then spatial positional information and the elevation information of target are recorded, again through data processing unit, spatial positional information and elevation information are processed, it is possible to directly calculate the flatness of tested surface.The method measure dot number of the present invention is not affected by restriction, it is possible to obtain the complete information of plane to be measured, it is possible to measuring the flatness of any Shape Parts, whole process can realize continuous automatic measurement, the speed of measurement and real-time, convenience are greatly improved.
Accompanying drawing explanation
Fig. 1 is assembly of the invention structural representation；
Fig. 2 is the structural representation of Laser Light Plane Scanning device；
Fig. 3 is measuring method flow chart of the present invention.
Wherein, 011 is video camera I；012 is video camera II；02 is Laser Light Plane Scanning device；03 is data processing unit；04 is data acquisition unit；05 is PSD position sensor；06 is wireless data transmission unit；07 is turntable；08 is working basic stand；09 is laser instrument；10 be plane mirror 11 is pentaprism；12 is drive motor.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in further detail, and the explanation of the invention is not limited.
Referring to Fig. 1, a kind of mechanical workpieces flatness rapid measurement device, it is characterized in that, including Locating System with Binocular, and it is placed in the Laser Light Plane Scanning device 02 in mechanical workpieces plane to be measured and PSD position sensor 05, also include the wireless data transmission unit 06, data acquisition unit 04 and the data processing unit 03 that are sequentially connected；
Laser Light Plane Scanning device 02, is used for producing laser scanning plane；
PSD position sensor 05, for measuring the highly deviated information of the sweeping laser plane of scanning motion；
Locating System with Binocular, for positioning the spatial positional information of PSD position sensor 05；
Wireless data transmission unit 06 and data acquisition unit 04, for transmitting incoming data processing unit 03 by highly deviated information and spatial positional information；
Data processing unit 03, for processing the highly deviated information and spatial positional information that obtain.
Described Locating System with Binocular is made up of video camera I011 and video camera II012.
Referring to Fig. 2, for the Laser Light Plane Scanning device 02 of the present invention, including working basic stand 08, being provided with laser instrument 09 and plane mirror 10 on working basic stand 08, be arranged over turntable 7 at plane mirror 10, turntable 7 top is provided with pentaprism 11；The laser beam that laser instrument 09 sends reflexes to pentaprism 11 by plane mirror 10.Drive motor 12 it is provided with in turntable 7.
Laser Light Plane Scanning device 02 is formed by laser instrument 09, pentaprism 11, plane mirror 10, working basic stand 08, turntable 07, drive motor 12；The highly deviated information of sweeping laser plane is measured by PSD position sensor 05；Locating System with Binocular is formed to position the locus of PSD position sensor 05 by video camera I011 and video camera II012；By wireless data transmission unit 06, data acquisition unit 04 by incoming to the highly deviated information surveyed and spatial positional information data processing unit 03；Processed obtained information by data processing software, and export the flatness information of determinand.
Referring to Fig. 1～3, mechanical workpieces flatness method for fast measuring disclosed by the invention, laser scanning device 02 and PSD position sensor 05 are placed on platen, first laser plane are calibrated；Respectively PSD position sensor 05 is placed on 3 positions of A, B, C, adjusts the angle of Laser Light Plane Scanning device 02 so that target is zero at the reading of A, B, C, thus determines a laser datum face with three points；By target continuous moving in plane to be measured, and by spatial positional information and highly deviated information data through wireless limit data transmission unit 06 and data acquisition unit 04, input data processing unit 03.When target is in tested plane behind mobile abundant position, the target position information obtained by software processes and highly deviated information, thus calculating flatness the output processing result of platen.
In sum, instant invention overcomes existing measurement of planeness technology needs to arrange in advance suitable cloth dot format, measurement space is counted few, measuring speed waits deficiency slowly, and PSD position sensor can be placed on optional position in the present invention, positional information and the elevation information of planar point to be measured can be recorded simultaneously, by the data processing software (specific algorithm is referring to GB11337-2004 " flatness Error Measuring ") of industry standard, just can directly calculate the flatness of plane to be measured, and measure dot number be theoretically unlimited.The present invention can measure the flatness of arbitrarily complicated shaped objects, and the speed measured and real-time have the raising of essence relative to current other technologies.
Claims (6)
1. a mechanical workpieces flatness rapid measurement device, it is characterized in that, including Locating System with Binocular, and it is placed in the Laser Light Plane Scanning device (02) in mechanical workpieces plane to be measured and PSD position sensor (05), also include the wireless data transmission unit (06), data acquisition unit (04) and the data processing unit (03) that are sequentially connected；
Laser Light Plane Scanning device (02), is used for producing laser scanning plane；
PSD position sensor (05), for measuring the highly deviated information of the sweeping laser plane of scanning motion；
Locating System with Binocular, is used for positioning the spatial positional information of PSD position sensor (05)；
Wireless data transmission unit (06) and data acquisition unit (04), for transmitting incoming data processing unit (03) by highly deviated information and spatial positional information；
Data processing unit (03), for processing the highly deviated information and spatial positional information that obtain.
2. mechanical workpieces flatness rapid measurement device according to claim 1, it is characterised in that described Locating System with Binocular is made up of video camera I (011) and video camera II (012).
3. mechanical workpieces flatness rapid measurement device according to claim 1, it is characterized in that, described Laser Light Plane Scanning device (02) includes working basic stand (08), working basic stand (08) is provided with laser instrument (09) and plane mirror (10), being arranged over turntable (7) at plane mirror (10), turntable (7) top is provided with pentaprism (11)；The laser beam that laser instrument (09) sends reflexes to pentaprism (11) by plane mirror (10).
4. mechanical workpieces flatness rapid measurement device according to claim 3, it is characterised in that by the rotation of turntable (7), forms laser datum plane.
5. mechanical workpieces flatness rapid measurement device according to claim 3, it is characterised in that be provided with drive motor (12) in turntable (7).
6. the method carrying out the measurement of planeness based on the mechanical workpieces flatness rapid measurement device described in claim 1, it is characterised in that comprise the following steps:
1) Laser Light Plane Scanning device (02) and PSD position sensor (05) are placed in the plane to be measured of mechanical workpieces, respectively PSD position sensor (05) is placed on any 3 positions of plane to be measured, adjust the angle of Laser Light Plane Scanning device (02), the reading making PSD position sensor (05) is zero, it is determined that laser datum face；
2) PSD position sensor (05) is moved on to any one position to be measured, spatial positional information by Locating System with Binocular record PSD position sensor (05), then with the elevation information of PSD position sensor (05) detection laser plane, after spatial positional information to be recorded and elevation information stably show, move to next position；
3) by step 2) operate the whole measurement being intended to survey；
4) the whole spatial positional information surveyed and elevation information are inputted data processing unit (03) by wireless data transmission unit (06) and data acquisition unit (04), by the Fitting Calculation, obtain the flatness information of mechanical workpieces plane to be measured.
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Cited By (7)
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| CN106524907A (en) * | 2016-10-18 | 2017-03-22 | 奇瑞汽车股份有限公司 | Testing fixture for cooling oil tube of transmission |
| CN107014321A (en) * | 2017-05-12 | 2017-08-04 | 西安交通大学 | A kind of flatness rapid field measurement apparatus and measuring method |
| CN109341606A (en) * | 2018-11-22 | 2019-02-15 | 武汉华星光电技术有限公司 | A kind of surface flatness measuring device and method |
| CN109683344A (en) * | 2019-01-24 | 2019-04-26 | 中国科学院西安光学精密机械研究所 | Light supply apparatus and its building method for the vertical assembling & adjusting system of X-ray focusing mirror |
| CN111707212A (en) * | 2019-03-18 | 2020-09-25 | 江苏理工学院 | Line profile measuring method and device for automobile composite material molded part |
| CN113739725A (en) * | 2021-08-04 | 2021-12-03 | 武汉华中数控股份有限公司 | Flatness measuring instrument and method |
| CN114485536A (en) * | 2022-01-27 | 2022-05-13 | 中国第一汽车股份有限公司 | Method and system for testing surface flatness of friction plate of double-clutch transmission |
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| CN111707212A (en) * | 2019-03-18 | 2020-09-25 | 江苏理工学院 | Line profile measuring method and device for automobile composite material molded part |
| CN113739725A (en) * | 2021-08-04 | 2021-12-03 | 武汉华中数控股份有限公司 | Flatness measuring instrument and method |
| CN114485536A (en) * | 2022-01-27 | 2022-05-13 | 中国第一汽车股份有限公司 | Method and system for testing surface flatness of friction plate of double-clutch transmission |
| CN114485536B (en) * | 2022-01-27 | 2023-07-21 | 中国第一汽车股份有限公司 | Friction plate surface flatness testing method and system for double-clutch transmission |
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Application publication date: 20160629 |