Каталог Iscar сверла со сменной режущей частью 2022 - страница 70

INDEXABLE DRILLS USER GUIDE • When drilling stainless steel or high temperature • Prior to using 8D or 12D drills, it is recommended to drill a alloys using the ICM drilling head, it is highly 0.5xD pre-hole using a short or centering drill. recommended to apply high-pressure oil or 7-10% Enter the pre-hole at slow speed and feed until 2-5 mm mineral or vegetable based oil emulsion. from its bottom. Start the cooling system and increase • Following is the recommended coolant rotation to the recommended drilling speed. Hold for 2-3 flow rate and pressure. seconds, then continue at the recommended drilling feed. Coolant Flow Rate (liter/min) 1 Pre-hole 0.5xD deep for centering 30 flow rate 20 10 0.5xD 5 6.8 12 16 20 25 Drill Diameter D (mm) Minimum Coolant Pressure (bar) 2 Slow rotation and feed while entering the pre-hole 15 12 8, 12X D 5XD 10 3XD81.5 X D 1.5xD 5 3 6 12 16 20 25 Drill Diameter D (mm) • For optimal performance, it is recommended to adjust 3 Maintain for 2-3 seconds and runout of outer points or chisel with a maximum of activate the cooling system 0.02 mm. Large runout will influence drill performance tool life and hole quality. • No setup time is needed after indexing the SUMOCHAM drill head. • SUMOCHAM drills can be used either on milling centers or lathe machines. • When using SUMOCHAM drill in stationary (lathe) applications, we recommend using the ISCAR GYRO device or eccenter sleeve to reduce misalignment. Misalignment will cause poor performance of the SUMOCHAM drill or even tool breakage. 4 Continue drilling at recommended cutting conditions 68 ISCAR