TROUBLE SHOOTING

FOR DRILLING

CuttingConditionsStyle of tand he TDesi oolgnInsMac tallahine tionand of Tool
TrS F oubleolutions actorsCutting Speed Up DowFeed Rate nLower the Feed at Initial EntryLower the Feed when ExitingStep FeedIncrease the Accuracy and the Depth of the Pre-holeI Oil RtiCuttin Fluid ncrease ao Increase Volumeg s Increase Coolant PressureLarge Small Chisel Width Honing Width Core ThicknessShorten the Flute LengthDecrease the Lip HeightUse a Drill with Coolant Holes Change to a Drill with X Type ThinningTool Installation AccuracyShorten Tool OverhangFlatten the Work Material FaceWork Material Installation Accuracy Machine Stability, Rigidity
Drill breakageLack of drill rigidity Improper cutting conditions Large deflection of the tool holderaaaaa
Work material face is inclineda
ifeLarge wearImproper cutting conditionsa
l Lat the peripheralIncrease in temp. at cutting pointaaa
Toocutting edgePoor run-out accuracya
hortChipping oflmproper cutting conditions laa
Sthe peripheralLarge deflection of the tool holderaa
cutting edgeChattering, vibrationaaa a
The chisel edge width is too largea
Chisel edge chippingPoor entrya
Chattering, vibrationaaa a
Hole diameterLack of drill rigidityaa
increasesImproper drill geometrya
Hole diameterIncrease in temp. at cutting pointaaa
cybecomesImproper cutting conditionsa
urasmallerImproper drill eometra
Accgy Lack of drill rigidityaa
HolePoor straightnessLarge deflection of the tool holderaa
orPoor guiding propertiesa
PoP hlLack of drill rigidityaa
oor oe positioningPoor entrya
accuracy, roundness and iImproper cutting conditionsa
surface finishLarge deflection of the tool holderaa
urrBurrs at theImproper drill geometrya
Bhole exitImproper cutting conditionsa
rolImproper cutting conditionsaa
ontLong chipsPoor chip disposalaaaa
ip CImproper cutting conditionsaaa
ChChip packingPoor chip disposalaaaa