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 News
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| LASER SCANNING FROM PERCEPTRON |
A breakthrough in portable, real-time laser scanning able to capture data at over 23,000 points per sec not only provides direct comparison against an original 3-D CAD model, it enables immediate feedback of complex surface and geometric data within an accuracy of +/- 50 microns.
Now available from EuroPac Metrology of Crewe, the Perceptron Laser non-contact system enables both surface and geometric data capture using 'Point Cloud' technology.
It can be operated from a laptop or desk top computer and data can be exported to most major software packages able to perform inspection, reverse engineering, prototyping and copy milling. Because of the speed and ease of interpolation of measured results, trends, drifts and errors can be identified earlier in the process. Also, because there is no direct contact with the part to be processed, sensitive, soft materials or parts that could be easily deflected with a touch probe, can be easily and quickly measured.
Used in conjunction with EuroPac Metrology’s 3000i portable measuring arm which has a class-leading accuracy of +/- 5 microns over its 1.2 metre reach the Perceptron laser probe is able to provide immediate on-screen visualisation through Delcam's PowerINSPECT software. As a result the system is able to demonstrate immediate feedback of the comparison of any data captured with the original CAD model.
The laser probe uses the principle of laser triangulation through optical lenses. The plane of laser light is projected onto the target object and the reflected light is captured by a camera in the sensor unit which is tuned to only visualise the specified wavelength of light. This negates any interference from fluorescent, incandescent or high-intensity lighting.
The laser light detected by the camera falls upon a 768 points per line grid matrix from which the points are precisely calculated. By progressively moving the probe unit over the part to be scanned, the object is built-up into a cloud of data points which is then automatically exported to the PowerINSPECT software for processing.
The Perceptron laser probe is extremely rugged enabling on-site use and is compact at 105 mm by 52 mm by 90 mm enabling easy manipulation in tight spaces. It weighs just 340 gm. With a 75 mm nominal depth of view, field of view is between 30 mm and 55 mm and there is no requirement for recalibration during normal use.
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Posted:23/03/2004 -
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