A verification system that slices up components layer by layer will allow manufacturers to check the accuracy of a part’s external and internal features automatically and to record its dimensions as a CAD file.
The CSS1000 system has been developed in the US by CGI of Minneapolis and is available in the UK from 3D Scanners of Coventry. As a destructive technique, the system is suitable for verifying the dimensions of, for example, the first of a big run of moulded components.
Small components are first embedded in a block of hard resin of contrasting colour. A milling machine is then used to remove thin slices from the blocks. As each slice is removed, a 2D scanning system with a resolution of 40 dots/mm records the geometry of the exposed surface of the component to an accuracy of 0.02mm.
Data from the scanner in the form of `point cloud’ data can be exported in a number of different CAD formats for comparing with original solid model design data.
Many complex small components such as snap-fit electrical connectors rely on their highly accurate internal shape to do their job. Checking their internal dimensions using traditional techniques is difficult, says 3D Scanners.
The CSS1000 will scan parts made from a range of materials including aluminium, plastics, steel, copper and wood. It also allows manufacturers to inspect multiple parts simultaneously.
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