Prof. Dr.-Ing. E. Abele (Director of the PTW/TU-Darmstadt)
This tool is a reamer to machine the main boreholes of cylinder block of a combustion engine. Machining of a crankcase out of GGV (450N/mm²) with a carbide-tipped "Fromm" reamer with internal coolant, spiral fluted Ø 77,3mm, tolerance= H7,cutting speed = 60 m/min, feed = 0,20 mm/rotation, grinding allowance = 0,15 mm |
Machining of a hydraulic manifold out of GGG60 with a solid carbide "Fromm" reamer, spiral fluted Ø 11,3mm, tolerance = H7, cutting speed = 50 m/min, feed = 0,20 mm/rotation, 1.500 rotation/min at 'minimum quantum lubrication' |