Short Tool LifePoor Surface FinishBurr / Chipping / BurrsChip Control Coated Tool Cutting Speed Feed Rate Depth of Cut Decrease Pick Feed Rate Down Cut Air Blow Increase Coolant Quantity Do Not Use Water- soluble Cutting Fluid Determine Dry or Wet Cutting Helix Angle Number of Flutes Concavity Angle of End Cutting Edge Tool Diameter Improve End Mill Rigidity Wider Chip Pocket Shorten Tool Overhang Tool Installation Accuracy Spindle Collet Run-out Accuracy Collet Inspection and Exchange Increase Chuck Clamping Power Machine Stability, Rigidity TECHNICAL DATA Factors TROUBLE SHOOTING FOR END MILLING Insert GradeSelection Cutting Conditions Style and Design Machine andof the ToolInstallation of Tool Solutions Cutting Fluids Up Up Trouble Down Down Non-coated insertis used a Large wear Not enough flutes a at the peripheralcutting edgeImproper cuttingconditions a a Up cut milling DownCut Improper cutting conditions Fragile cutting edge a Chipping Insufficient clamping a a force Poor clamping a a a a a a rigidity Improper cutting a conditions Breakage Poor end mill rigidity a a duringcutting Overhang longerthan necessary a a Chip packing a a Improper cutting a a Vibration conditions during Poor end mill rigidity a a a a cutting Poor clamping a a a a a a rigidity Large cuttingPoor wallsurfaceroughnessedge wearImproper cuttingconditionsaaaChip jamming a a aWet Poor bottomsurface The end cutting edge doesnot have a concave angle a a a roughness Large pick feed a Large cuttingedge wear a Out of Improper cutting a a vertical conditions Poor end mill rigidity a a a a Poor surfacefinishaccuracyImproper cuttingconditionsPoor clampingrigiditya a a a a a a a a Burr, workmaterial Improper cuttingconditions a a chipping Large helix angle a Quick burr Notch wear occurs aformationImproper cuttingconditionsaa P Metal removal a a Chip packing too largeLack of flute a a chip space P025