Portable Laser Scanning System
Posted on: Tuesday, 22 November 2005, 03:02 CST
By Anonymous
Portable laser scanner can capture as many as 20 million points.
Including its control unit, sensor and one-axis swivel head, the MobileScan 3D portable laser scanning system from NVision Inc. (Wixom, MI) weighs only 26 lb (12 kg). It can resolve to less than 0.001'' (0.03 mm) for a measurement volume of 60 in.^sup 3^ (983 cm^sup 3^).
The MobileScan 3D sensor mounts on a rotary one or two-axis servocontrolled swivel head that can be attached to either a tripod or a table support. The sensor can be moved manually or automatically controlled by the included Wind3DS data-capturing software. This means that the scanner can be left alone to scan production items without the constant attention that is required by a handheld device.
The sensor projects laser light onto the surface of the object being measured while a camera continuously triangulates the changing distance and profile of the laser as it sweeps along, enabling the object to be accurately replicated. The MobileScan 3D can quickly measure large parts while generating far greater numbers of data points than CMMs, without the need for templates or fixtures. Because it's not necessary for a probe to physically touch the object, the problems involved in depressing soft objects and measuring small cavities are eliminated.
The system connects to a notebook computer via USB or Firewire, and can capture as many as 20 million points. Before scanning and during the measurement process, the new laser scanner continually senses the object's surface and ambient light conditions, and automatically adjusts the sensor to obtain the best possible measurements. All measurements are automatically transformed into a common coordinate system. The Wind3DS software provided with the MobileScan 3D produces an ordered data set or ASCII data. The scanner package also includes Raindrop Geomagic computer-aided inspection software that automatically processes scan data from a physical part to generate accurate polygon and parametric surface models. The Geomagic software also provides graphical comparisons. Circle 218
Model L-720 Swiss-type lathe is the seventh generation in the L- 20 line from Marubeni Citizen-Cincom.
Copyright Society of Manufacturing Engineers Nov 2005
Source: Manufacturing Engineering
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