Abstract
This work presents a suitable solution to get innervolumetric 3-dimensional data of an Additive Manufacturing (AM) process. The necessary image capturing and generating of singlelayer pointclouds is presented. The subsequent pointcloud composition to an objectpointcloud is also explained. The sensor system is implemented and evaluated in a Fused Filament Fabrication (FFF) manufacturing machine. The captured innervolumetric data represents informations about internal structures of the manufactured object and might be a possibility to qualify the manufacturing process. Potential quality features could be geometry dimensions, surface roughness or other manufacturing defects. These informations could control a quality control loop and subsequently improve the manufacturing process.
Highlights
Metrology and methods for 3-dimensional measurement have found a place in many parts in our life
Challenges are to get these informations during the manufacturing process and the system should be adaptable for further additive manufacturing methods
This work presents a stereoscopic camera system and a fringe pattern projector to get 3-dimensional geometry informations after every manufactured layer – a singlelayer pointcloud. This case and the apriori knowledge about the layer height permits a construction of a complete object pointcloud
Summary
Metrology and methods for 3-dimensional measurement have found a place in many parts in our life. Reasons can be found in necessity for a high grade of automation in manufacturing and production processes This development is inevitable to get high innovation and quality for competitive staying in the market [3]. The claimed high grade of innovation is only possible with research and development in these optical fields This includes the availability of new sensor technologies and the capability for evaluation of new processing approaches. The blueprint creating is getting easier and saves time effectively Another step for new ways in product development was possible since the first additive manufacturing processes were presented in the idea for stereolithography (STL) of Alain Le Méhauté, Olivier de Witte and Jean Claude André [4] in 1984. The transformation from CAD in machine readable code opens new ways for rapid prototyping and manufacturing
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