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Wide range 3-D scanners for measuring larger parts

Could they offer more accuracy than a laser scanner in quality control?

Posted on 01 Jul 2024. Edited by: Tony Miles. Read 878 times.
Wide range 3-D scanners for measuring larger partsLaser scanners currently offer the largest measurable work areas, however they may not have sufficient accuracy for the quality control of larger components, and it is only recently that structured light scanners have begun to achieve better accuracy in work areas of a size similar to laser scanners — this is due to the development of camera and projector technology.

The use of new cameras with increased resolution has a significant impact on scanning results, making it possible to detect an increased number of flaws and defects on individual scanned objects, and this can have a positive result in the case of quality control. The advantage of the structured light scanner is that it has a constant accuracy over the entire measuring area. This provides the confidence that the measurements for quality control are with a tool of high accuracy and high repeatability.

In addition, a scanner with a large work area needs to perform a much smaller number of scans than a traditional structured light scanner. This translates significantly into an improvement in the speed of quality control. If the entire detail can fit into the scanning area of such a scanner, then we can talk about making only one scan to obtain the basic dimensions of the object’s dimensions and this can significantly speed up the entire quality control process.

From the perspective of integration into production lines, the addition of such a scanner between production steps does not significantly affect the entire process. Because we have a limited period in production, this is extremely important.

The eviXscan 3D WideRange 65, available in the UK from Market-Harborough-based Optimax Imaging and Inspection, is as an advanced solution designed for precise quality control of expansive objects, tailored for dimensions ranging from 300 to 1,200mm. This scanner stands out for its capacity to deliver comprehensive, high-accuracy inspection swiftly (it can capture a complete 3-D scan in just 1.2sec), integrating seamlessly into diverse industrial frameworks. It is particularly useful in applications in sectors such as automotive, aerospace, and shipbuilding, where parts can be big and require high-precision scanning.

Engineered with a high-resolution 8.9 mega pixel cameras, the eviXscan WideRange 65 offers a fine point density of 54pts/mm2, ensuring detailed representations even over extensive areas of scanning objects, aligning with VDI/VDE part 2 accuracy standards. The instrument achieves a scanning precision of 0.03mm, fulfilling the stringent demands for accuracy in complex quality control and engineering analysis.