Extreme 3D scanning of a large-sized model on the customer's premises

Technology: marker scanning, reverse engineering
Location: customer’s territory
Equipment: RangeVision PRO 2 M 3D Scanner
Software: ScanCenter, CAD
Time costs: scanning — 8 hours, scan processing — 8 hours, CAD model and drawing construction — 24 hours

The RangeVision partner conducted a 3D scan of large-sized armored slurry pump discs on the customer’s premises. Based on the three-dimensional scan, an engineering model was built in CAD, ready for the production of an analog.

RangeVision 3D scanners are mobile and suitable for digitizing objects of various sizes, including large ones. If necessary, the engineer can travel to the location of the digitization object himself. Specialists from Sibrain, RangeVision’s partner in Novosibirsk, performed a three-dimensional scan on behalf of the mining and processing plant right on the territory of the existing workshop.

It was necessary to digitize two cast armored discs of a slurry pump to create analogues, they had a total weight of about a ton and were moved by a crane beam. The conditions turned out to be unfavorable, almost extreme for the scanner: high humidity, an air temperature of about 0 degrees, coal dust and non-adjustable lighting. Nevertheless, the task was completed on time.

The RangeVision PRO 2M 3D scanner worked on the first scanning area — the cameras were widely separated to read a large object. To simplify the subsequent alignment of the scans, markers were pasted on the surface of the object. The specialists first digitized the entire assembly, and then each armored disc and fastener separately, the process took one working day.

The scan processing also lasted one day, after which the three—dimensional polygonal model was sent to the engineers, who transferred it to CAD — that is, they performed reverse engineering. We built a mathematical model in CAD and executed the drawing taking into account the accuracy tolerances set by the customer, resulting in 3D files ready for production.

Non-contact optical 3D scanning using the principle of structured illumination provides high accuracy while significantly reducing the time it takes to remove data from an object. The use of classical metrological instruments would require a lot of labor and would take about 5−7 business days. Using a 3D scanner, the entire process (from digitizing the sample to getting the model ready for production) took 6 business days.

RangeVision expresses its gratitude to V. S. Kovalev and Sibrain LLC www.sibrain.ru for the materials provided.