FLORIN SUSAC, VALENTIN TABACARU, VIRGIL GABRIEL TEODOR, NICUSOR BAROIU EFFECT OF CUTTING PARAMETERS ON THE HOLE QUALITY IN DRY DRILLING OF SOME THERMOPLASTIC POLYMERS Drilling of polymeric materials can be challenging when holes are produced in large scale due to the necessity of controlling the holes quality. This paper presents the effect of machining parameters on the hole quality, in terms of surface roughness and circularity error, in drilling of high density polyethylene, polyamide and polyacetale. The analysis of variance was performed in order to assess the significance of cutting parameter on the hole quality parameters. The experimental results indicate that different cutting conditions are to be employed in order to achieve the optimum surface roughness and circularity.
Keywords: drilling, polymer, cutting parameters, ANOVA, roughness and circularity error