Design Rules for the Additive-Subtractive Process Chain

Abstract

The design freedom of additive manufacturing (AM) enables not only complex geometries to improve the performance of the component, but also allows the integration of features to enhance subsequent process steps. Consequently, design for AM, but also design for necessary subsequent process steps, e.g. machining, should be taken into consideration. This includes adapted support structures, clamping and probing geometries. This paper addresses these challenges and proposes a framework of design rules for the additive-subtractive process chain (ASM) with the focus on machining. The subtractive processes of sawing, drilling, reaming, and milling are examined. In contrast to conventional allowance and support structure definitions, productivity improvements are achieved with design for ASM features, included during the design stage.