New algorithm to calculate the cutter location points (CL) optimizing the chordal tolerance for 2 ½ axis milling of free form surfaces

Even though the high order polynomial can be used to describe a free form tool path for CNC milling, traditional linear interpolation (G01) is the most used today. As investigated in a previous work, different CAM systems calculate different points (CC) to mill the same surface under the same tolera...

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Bibliographic Details
Published in:Procedia CIRP 2021, Vol.101, p.73-76
Main Authors: Poffo, Evandro, Rebello, Marcos Antonio, de Souza, Adriano Fagali, Käsemodel, Rodrigo Berretta, Rossini Severino, Nicolas de Lima
Format: Article
Language:English
Subjects:
Computer aided manufacturing (CAM)
Milling
Tool path
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Summary:Even though the high order polynomial can be used to describe a free form tool path for CNC milling, traditional linear interpolation (G01) is the most used today. As investigated in a previous work, different CAM systems calculate different points (CC) to mill the same surface under the same tolerance and cutting conditions. The current work presents a new approach to generate NC codes optimizing the use of the chordal tolerance for 2½ milling. The experimental results shown that the NC codes generated by the proposed method reduced in about 60% the milling time by reducing the CC points, without losing the accuracy.
ISSN:2212-8271
2212-8271
DOI:10.1016/j.procir.2021.04.002