Theory And Application Of Finishing Turning 45 Hardened Steel

Generally as the toughness of the harden steel is so high that the harden steel is often cutted with PCBN cutting tools. But the price of the PCBN cutting tools is relatively high, moreover the bending strength, shock resistance of the PCBN material are not good enough. When it is used to cut the harden steel, the case of tool failure and very short tool life often occure. This article is based on the demand.In this thesis, it comes true to finish machining 45 hardened steel in index cutter of hornisses alloy. On the basis of establishing planar cutting model and cutting equation, through analyzing the rigidity of technical system infrequency chart, change cutting coefficient and the angle of cutter etc, emphasis measuring and analyzing hard turning 45 hardened steel the damaged layer of finished surface cutting force the roughness on finished surface and researching on the mechanism of wear and damage of cutter. It basically forms the cutting theory of finishing turning 45 hardened steel, What is more, this achievement offers new theory and technology for hard turning.