SYSTEM SUPPLIER TO THE AVIATION SECTOR USES 3D SCANNERS FOR INCOMING GOODS INSPECTION

Scanning tools for subsequent surface comparison against CAD

Incoming goods inspection is generally a tried and tested means of quality assurance for checking the quality of delivered parts for conformity and is performed by the majority of companies. It is usually carried out through an in-house quality control system or by external metering service providers.

In the case of geometrically complex components, some of which are only installed once for each aircraft (during initial manufacture), only very small numbers are produced in the aviation sector. Depending on the manufacturing process, these components may require only one or several production resources/tools. Each tool is then individually manufactured according to the customer’s specifications.

In addition to a fixed touch probe coordinate measuring machine, distributed in Germany by Duwe-3d, Hutchinson Aerospace GmbH, a leading system supplier to the aviation sector, has been using the portable 3D scanner MetraSCAN 3D from Creaform together with the software PolyWorks from Innovmetric for some time at its Nobitz site for incoming goods inspection of tools for the shop floor. When tools are received, they are scanned with this device and then assessed for conformity by surface comparison against CAD. In the event of suspected non-conformity with the specifications (e.g. specification sheet, 3D model), more extensive evaluations are then additionally performed. The tools that must be measured are made of various metallic and non-metallic materials, with sizes ranging from a few centimeters to over 3 meters. The accuracy required in the manufacture of the tools, which has a direct effect on the dimensional accuracy of the products manufactured with them, can be up to 1/100 millimeter.

Evaluation of the scan in Polyworks and with color scaling

 

Purchasing the MetraSCAN 3D has significantly increased the options for measuring and analyzing products, as well as for manufacturing facilities. The mobility of the system and the accuracy of the multi-line scanner are particularly impressive. The disadvantages of trigger forces with touch probe measuring instruments on limp or dimensionally unstable components are now almost a thing of the past.

The MetraSCAN 3D is currently only used as part of quality control in the measurement laboratory at the Nobitz site. However, thanks to the high degree of mobility of the system, it is also possible to use it in other plants within the Hutchinson Aerospace Group, and to bundle capacities.

Given the diverse requirements with regard to materials, sizes, time, mobility of the measuring system and ergonomics, the Creaform system showed very good results when assessed both in terms of technology and profitability and emerged as the clear favorite from the benchmark for Hutchinson. Contributing factors:

• HandySCAN 3D already in use at Hutchinson Aeroservice
• Scanning speed
• Very little penetration behavior into fiberglass fabric, as no chalk spray may be used
• Good results with reflective materials as well as with contrast variations on the surface to be scanned
• High degree of accuracy in the comparison measurement with the coordinate measuring machine
• Very significant time savings with each subsequent measurement through automated alignment and evaluation
• Ergonomic and not very burdensome operation of the scanner
• Mobility of the system
• High measurement volume