705 Каталог INGERSOLL 2011 Режущий инструмент и инструментальная оснастка Стр.707

Каталог INGERSOLL 2011 Инструмент и оснастка Стр. 707 0705 Lab2u

GUN DRILL TROUBLESHOOTING GUIDE TROUBLESHOOTING GUIDE Drill Problems Hole Problems Possible Cause 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 Curved hole axis Conical entrance Runout Rough surface finish Undersized Oversized Poor clamping + Insufficient coolant flow Low coolant pressure Incorrect coolant type Feed fluctuations Feed too high Feed too low Spindle speed too high Spindle speed too low + Material structure + Material shrinking due to heat Thin wall section of workpiece Misalignment + Undersized hole + Rough cutting edge finish Built-up edge + Worn out edge Interrupted chip flow Flute clearance too small Incorrect drill profile + Incorrect head angles + Vibrations + Oversized bushing Gap between bushing & workpiece + Undersized bushing Loss of coolant pressure + High coolant pressure Overheating coolant Insufficient coolant + Head inside angle excessive wear Head outside angle excessive wear + Carbide head too short Tool heel drag + Worn supporting pads + Tool whip - reverse tool rotation + 707