Design Considerations for a Directed Energy Deposition Cell

Abstract

Setting up a robotised additive manufacturing machine requires attention to several safety aspects, including integration of different systems, a functional work area, human-machine interfaces and convenience in operation. This article presents some topics that should be considered in the design and assembly of a cell for robotised additive manufacturing. It is based on experiences from design and assembly of a cell for hybrid DED and grinding in the additive manufacturing laboratory at SINTEF Manufacturing. The cell is designed to ensure safe and stable operation of robot and build unit for additive manufacturing, and to achieve this it is constructed as a steel framework, covered with steel sheet metal and equipped with a ventilation system, laser-proof windows and a roll-up gate. A safety system was designed and integrated to ensure communication between the different elements operating in the cell and coordination of safety mechanisms.