Investigation of Cutting Forces and Surface Roughness in Hard Turning of Bearing Ring with CBN Insert
Mehmet BOY İbrahim ÇİFTÇİ Feridun Özhan
AbstractThe most important components of the bearings are the inner and outer bearing rings. The raceway is the most important feature constituting the bearing rings. Grinding and super finishing operations are applied to attain tight tolerances and very low surface roughness in the raceway. In this study, the effect of the cutting parameters on the cutting forces and surface roughness in turning of the outer bearing ring raceway, made from hardened AISI 52100 steel, was investigated by using cubic boron nitride (CBN) cutting tool instead of grinding. The cutting forces occurred in hard turning of the outer bearing rings were measured using a piezoelectric cutting force measurement unit. It was seen that the radial cutting forces acting on the outer ring raceway were higher than the primary forces. The feed force at the end of the raceway form was higher than that at the start point of the form. The lowest surface roughness was obtained at 0.04 mm/rev feed rate.