Abstract
Due to the complex physical state changes during Additive Manufacturing processes, geometric deviations of part surface are unavoidable. In order to assist the study of part geometric deviation from the perspective of physical mechanism, according to the characteristics of layer-wise and line-wise printing in additive manufacturing, a method to describe the in-plane geometric deviation is presented in this paper. The geometric deviation coordinate system is established based on the scanning toolpath and its feed wire as well as the orthogonal direction of the baseline and the feed line in this method. The in-plane geometric deviation can be expressed through scanning toolpath mapping function considering the deviation factors. The geometric deviation representation method is preliminarily verified by the case study of Fused Deposition Modeling parts with a cylinder shape.
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