Title: Measurement of Robotic Path Deviations and its Influence on Additively Manufactured Components

Authors: Jan Bremer, Andres Gasser, and Johannes Henrich Schleifenbaum

DOI: 10.33599/nasampe/c.19.0636

Abstract: For additive manufacturing (AM) of large components, suitable technologies most commonly comprise a deposition head moved by a kinematic system over the areas to be deposited. In this paper, the process of Laser Material Deposition (LMD, also known as Direct Energy Deposition, DED) is the AM process researched. LMD processing cells based on industrial robots promise benefits both in flexibility and economy. However, the effects of limited achievable path precision during deposition are currently not known. Tests regarding achievable path precision of a LMD cell based on an industrial robot are conducted based on standardized machine tool tests using a double ball bar sensor. Additional acceleration sensors are evaluated regarding suitability for online path monitoring.

Measurement results are evaluated using tracks deposited using the cladding head on the robotic system. Analysis regarding measured resonance frequencies and achievable path precision is conducted. Both circular and square path geometries are evaluated to represent different build strategies. Effects on deposited LMD specimens are shown and discussed and an outlook on future research is given.

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Conference: CAMX 2019

Publication Date: 2019/09/23

SKU: TP19-0636

Pages: 13

Price: $26.00