The Effect of Cross-Feed Variations on Vibration and Surface Roughness for Hardened Tool Steel SKD11 Ground by Surface Grinding Machine

The surface grinding is a machining process primarily used to achieve a very smooth surface. In addition to the depth of cut, the cross-feed parameter is very influential on the vibration and has a direct impact on its roughness. High cross-feed influences productivity so that machining time is shorter, but results in low surface quality and vice versa. In this study studied the effect of cross feed on vibration and its consequences on surface roughness. Thus, it is expected that only by monitoring vibrations in real time can control the surface roughness produced by this surface grinding process. The experiment shows that the increase in cross-feed from 5.3 to 11.7 mm/stroke, for the A46QV type grinding wheel, gives an increase in vibration amplitude from 6.74 to 18.75 g rms and this results in an increase in surface roughness from 0.52 to 1.47 μm. Whereas the A80LV, the finer type grinding wheel provides an increase in vibration amplitude from 5.09 to 18.28 g rms and this results in an increase in surface roughness from 0.36 to 1.42 μm.