Estudio de los parámetros de taladrado de un composite de matriz poliéster con refuerzo híbrido de fibra de vidrio más fibra de cabuya y su incidencia en las características de acabado superficial.

Abstract

The objective of this experimental work is to study the behavior of the composite material or composite of polyester matrix with hybrid reinforcement of fiberglass and fiber of cabuya of the parameters of the drilling operation, as it is a material previously developed with applications in bodyworks It is vital to know how the aforementioned material performs in operations previous to assembly. The input variables were the spindle speed (Vc) (1000, 2000 and 3000 rpm) and the feed speed (a) (100, 200 and 300 mm / min), and three types of drill bits were used with 8.5 mm diameter (HSS drill, special kevlar carbide drill bit and diamond tip coated drill bit). The delamination factor (Fd), mean roughness (Ra) and the microscopy of the perforation wall were considered as output variables. Subsequently, the Factorial Model 32 was used in the design and analysis of the experimentation. The best roughness (3,235 um) and output delamination factor (1,273) were obtained with the special carbide kevlar bit with Vc = 1000 rpm and a = 100 mm / min. While the best input delamination factor was obtained with the same dril but Vc = 3000 rpm and a= 200 mm / min.