Análisis del proceso de ranurado y taladrado en el material compuesto de resina plástica reforzada con fibra de vidrio

Abstract

In recent years the use of composite materials in industry has increased, due to its high strength and low weight, for this reason the study of machining processes in composite materials is very important to determine optimum cutting parameters, which allow to obtain a quality machining. In the present study the analysis of cutting parameters was carried out for two important processes such as grooving and drilling in two composite materials: polyester resin matrix reinforced with fiberglass and epoxy resin matrix reinforced with fiberglass, these materials were manufactured by the manual stratification method with a volumetric composition: 70% matrix and 30% reinforcement. For the grooving and drilling process, two exclusive cutting tools were used to machine composite materials, and the DOE experimental method was used, which allowed us to obtain the combinations of cutting parameters (cutting speed and feed rate), with the which were carried out the machining tests corresponding to each process, in the samples obtained measurements of surface roughness (Ra) and delamination that is defined by a delamination factor (Fd). The results obtained allowed us to define the cutting parameters for grooving and drilling, with which the best surface quality and the lowest delamination of the mechanized composite material were obtained.