ROUND TOOLS 22 / NORTON WINTER PRECISION TECHNOLOGY TOOL GRINDING DRESSING ON THE PRODUCTION MACHINE Each tool change on a grinding machine causes a degree of run-out and positional error, which can produce small deviations from the nominal tool geometry. Demands made on the accuracy of round tools, however, are constantly increasing. Norton Winter Q-Flute grinding wheels are the solution to this problem. Q-Flute technology combines innovative flute grinding with the precise touch dressing process. This innovative technology enables considerable quality improvements to the main and minor cutting edges, without adversely affecting grinding performance. By regularly regenerating the wheel topography, tighter tolerances and fully automatic shift operations are possible. AREAS OF APPLICATION Norton Winter Q-Flute grinding wheels finding their areas of application at all applications where high MRR are required. NORTON WINTER Q-FLUTE CASE STUDIES GRINDING WHEEL D54 Q-Flute EVO DRESSER Norton Winter DDS Roller dresser MACHINE Walter Helitronic COOLANT Oil WORK PIECE TC drill Ø 10 mm GRINDING PARAMETERS FEED RATE vf = 170 mm/min DEPTH OF CUT ae = 3.5 mm CUTTING SPEED vc = 18 m/s MRR’ Q‘w = 10 mm³/mm · s DRESSING PARAMETERS SPEED RATIO qd = 0.9 OVERLAP RATE Ud = 3 DRESSING INFEED aed = 2x3 µm ROUND TOOLS FLUTE GRINDING CASE STUDY 1: Cutting quality dressed internally Minor cutting edge Tungsten carbide drill Magnification: 500 X Minor cutting edge Tungsten carbide drill Magnification: 500 X Cutting quality dressed externally BENEFITS • Very good cutting quality • Maximum profile accuracy • Tightest tolerances
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