Каталог Iscar сверла ружейные и для глубокого сверления 2022 - страница 125

309 +++++++++++++Cratering +++++++++++++++Built-up edge ++++++++++++++++++Damaged wear pad ++++++++++++++++Flute bending ++++++++++++Drill heat ++++++++++++++Excessive flank wear ++++++++++++++Excessive corner wear +++++++++++++Excessive margin wear +++++++++++++++++++++++++++++++Poor drill life +++++++++Chipping ++++++++++++++++++++++++++Breakage Drill Problems +++++++++++++++++++Curved hole axis ++++++Conical entrance ++++++++++++++++++++++++Runout ++++++++++++++++++++++Rough surface finish +++++++++Undersize +++++++++++++++++Oversize Hole Problems Possible Causes Gundrill Troubleshooting Guide USER GUIDE 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 GUNDRILLS