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COBEF 2021
11th Brazilian Congress on Manufacturing Engineering
A CONTRIBUTION ON THE USE OF REPLICAS FOR MICROMILLING EXPERIMENTAL TRIALS
Submission Author:
Déborah de Oliveira , DF , Brazil
Co-Authors:
Déborah de Oliveira, Raphael Lima de Paiva, Márcio Silva
Presenter: Déborah de Oliveira
doi://10.26678/ABCM.COBEF2021.COB21-0008
Abstract
Micromachining has many definitions, but it is defined by many authors as a process in which the tool as 1 to 100 µm. Due to its small sizes the tool cannot be considered perfectly sharp and therefore many of the theories applied for macro machining cannot be used. In this sense many authors tried to develop computational and experimental studies to contribute to the comprehension of those processes. Those authors usually varied the workpiece material, the cutting tool, cutting parameters and the outputs they measured, however there is still no consensus about the use of replica. In this sense, this work aims to contribute to the discussion of the use of replicas in the micro machining process. Experimental trials of micromilling with one replication each were performed in Inconel 718 with different cutting speeds. The output parameter analyzed was the surface finish (Ra parameter). A statistical analysis of variance (ANOVA) was performed in order to verify the statistic influence of cutting speed and replication trials, as well as their interaction. The results showed that the variation of surface finish between test and replica was statistically significant, although the influence of cutting speed was more expressive.
Keywords
micromilling, Inconel 718, Replicas, Surface finish
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