Каталог Iscar вращающийся инструмент 2017 - страница 678

USER GUIDE Gundrill Troubleshooting Guide Possible Causes Hole Problems Poor clamping Insufficient coolant flow Low coolant pressure Incorrect coolant type Feed fluctuations Too high feed Too low feed Spindle speed too high Spindle speed too low Material structure Material shrinking due to heat Workpiece thin wall section Misalignment Undersized hole Rough cutting edge finish Built up edge Worn out edge Interrupted chip flow Too small flute clearance Incorrect drill profile Incorrect head angles Vibrations Oversized bushing A gap between bushing and workpiece Bushing undersize Loss of coolant pressure High coolant pressure Overheating coolant Insufficent coolant Head inside angle excessive wear Head outside angle excessive wear Too short carbide head Tool heal drag Worn supporting pads Oversize + + + + + + + + + + + + + + + + + Undersize + + + + + + + + + Rough surface finish + + + + + + + + + + + + + + + + + + + + + + Runout + + + + + + + + + + + + + + + + + + + + + + + + Conical entrance + + + + + + Curved hole axis + + + + + + + + + + + + + + + + + + + Drill Problems Breakage + + + + + + + + + + + + + + + + + + + + + + + + + + Chipping + + + + + + + + + Poor drill life + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + Excessive margin wear + + + + + + + + + + + + + Excessive corner wear + + + + + + + + + + + + + + Excessive flank wear + + + + + + + + + + + + + + Drill heat + + + + + + + + + + + + Flute bending + + + + + + + + + + + + + + + + Damaged wear pad + + + + + + + + + + + + + + + + + + Built-up edge + + + + + + + + + + + + + + + Cratering + + + + + + + + + + + + + GUNDRILLS 674 ISCAR