The Influence of Cutting Speed and Cutting Feed on Residual Stresses Due to Plain Milling

The goal of the contribution is to present results of Xray diffraction study of residual stresses in the surface layers of guide gibs for machining centres made from hardened 14 100.3 steel. Investigated samples were sidemilled using a cutter head with tool tips. While the cutting depth was kept constant, various cutting speeds, and feeds were applied. Surface integrity was studied in order to assess the effect of the varied machining parameters on both the surface and depth distributions of residual stresses. The state of residual stresses was determined in two azimuths by means of Xray diffraction technique. Considering that the penetration depth of CrKα Xray radiation in steels is less than 5 μm, electrochemical etching was applied for depth profiling.