Investigation the effect of cutting parameters on surface roughness in drilling operation of steel fe360.b

Investigation of the Effect of Drill Bit Feature on Hole Surface Quality and Tool Wear

“…Ankalaki et al [4], in their study, stated that the surface roughness decreases with the increase of cutting speed and stated that the basic condition of reducing the production cost and improving the quality by minimizing the errors in any manufacturing industry is to determine the appropriate working parameters. Naemah et al [5] studied the drilling of Fe360B steel material with HSS drill bits with diameters of 10 mm and 12 mm, with different drill bit angles between 900 and 1400. They applied the cutting speed as 30 m/min and the feed in the range of 0.1-0.3 mm/rev.…”

“…Al 7075 aluminum alloy is preferred in the aerospace industry, but its machining is more difficult than other aluminum alloys due to its high strength. The feed rate was taken as 0.1 mm/rev, taking into account the drill bit specifications and the relevant literature [2,5,10,12,13,15,18,19]. The cutting speeds determined according to the material of the workpieces are given in Table 4.…”

“…As seen in Figure 3, the lowest surface roughness was observed with the TiN coated drill bit at the hole entry and hole exit for both drill diameters when drilling Al7075 aluminum alloy material. In the literature [5], it is stated that the surface roughness increases as the drill diameter increases. The values obtained as a result of the study are quite compatible with the relevant literature.…”