Device, apparatus and method for positioning measurement reference plane of measured object

A technology for measuring datums and positioning equipment, which is used in measuring devices, optical devices, instruments, etc.

Active Publication Date: 2015-01-21
TZTEK TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This invention is a method based on comprehensive positioning of laser and image independently developed by Tianzhun after a large number of investigations. The data is effectively processed through the algori

Method used

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  • Device, apparatus and method for positioning measurement reference plane of measured object

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Experimental program
Comparison scheme
Effect test

no. 1 approach

[0018] see figure 1 , the measuring datum plane positioning device of the measured object includes a measuring platform 10 , a processor (not shown in the figure), a video measuring instrument 11 , and two laser probes 12 .

[0019] The measuring platform 10 includes a stage 101 and a circular turntable 104. The stage 101 is provided with a number of stations 102 for carrying the measured object 13. In this embodiment, the stations 102 have 1-8 positions marked, Of course, the number of workstations 102 can be more or less, which can be determined according to practical applications. The layout of the workstations 102 is preferably evenly distributed on the loading platform 101 . In order to prevent the object under test 13 carried on the station 102 from moving, the object under test 13 can be firmly fixed on the station 102 using a fixing jig.

[0020] A work station 103 is fixed directly above each work station 102 , and the work station 103 can be fixed directly above th...

no. 2 approach

[0036] The measurement reference plane positioning device of the measured object in the second embodiment encapsulates the structural composition of the measurement reference plane positioning device of the measured object in the first embodiment. In addition, the measurement standard of the measured object in the second embodiment The measurement platform of the surface positioning device also includes a driver for driving the turntable 104 to rotate. In this way, the turntable 104 does not need to be rotated manually, and the rotation of the turntable 104 can be realized by turning on the driver, which saves manpower and improves efficiency.

no. 3 approach

[0038] The measurement reference plane positioning device of the measured object in the third embodiment encapsulates the structural composition of the measurement reference plane positioning device of the measured object in the second embodiment. In addition, the driver in the third embodiment does not need to be manually driven , but rely on the processor to drive.

[0039] The driver includes a driving mechanism and a triggering mechanism. The driving mechanism is used to drive the turntable 104 to rotate. The triggering mechanism is used to trigger the driving mechanism to run. The triggering mechanism is electrically connected to the processor to receive instructions from the processor. Although it is also necessary to manually give commands to the processor, the operation mode of the measuring datum plane positioning device for the measured object will be more friendly and simple. For example, when the computer is selected as the processor, it is only necessary to issue ...

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Abstract

The invention discloses a device, an apparatus and a method for positioning a measurement reference plane of a measured object. A turntable is firstly turned to carry the measured object to the position under a station provided with an image measurement instrument so as to obtain an image of the measured object, a processor extracts two intersecting edge line segments from the outmost edge of the measured object in the image, the two intersecting edge line segments serve as a first reference edge and a second reference edge, and a first reference edge coordinate and a second reference edge coordinate are correspondingly obtained; then the turntable is turned to carry the measured object to the position under a station provided with two laser measuring heads, the surface of the whole measured object, including the edge portion, is completely scanned along a predetermined scanning route, the relative relation of the image and laser on a space coordinate is utilized to obtain a point cloud formed by a plurality of laser points, the point cloud serves as laser scanning data, the processor performs fitting according to the laser scanning data to obtain a first reference plane parameter provided with the first reference edge and a second reference plane parameter provided with the second reference edge of the measured object, and the first reference edge coordinate and the second reference edge coordinate are correspondingly combined with the first reference plane parameter and the second reference plane parameter to obtain the accurate position of the measured object.

Description

technical field [0001] The present invention relates to industrial precision measuring instruments, in particular to a measurement reference plane positioning device for a measured object and a measurement reference plane positioning method for the measured object, and a measured object installed in the measurement reference plane positioning device for the measured object The measurement reference plane positioning module and the measurement reference plane positioning method of the measured object. Background technique [0002] The measurement method of image combined with laser is being used more and more in today's ever-growing measurement needs. How to effectively integrate laser and image measurement and ensure the accuracy of measurement results has always been a problem in the measurement industry. issues that have to be taken seriously. In order to ensure the accuracy of the measurement results, the positioning of the measured object in different orientations is pa...

Claims

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Application Information

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IPC IPC(8): G01B11/00
Inventor 孙洋
Owner TZTEK TECH
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