Troubleshooting
C a u s e
Troubleshooting
Cutting edge
Build-up
  • Cutting speed too low
  • Excessive honing of cutting lip
  • When bright finish cutting lips have tool coated
  • Increase cutting speed
  • Decrease amount of honing of edge
  • Coating edge
Crumbling of outer corner
  • None rigid conditions,
    insufficient workpiece clamping
  • Deviation from concentricity too large
  • When interrupted cut reduce feed
  • Equip accurately workpiece
  • Check and modify concentricity
  • Decrease moving speed
Heavy wear and
tear at flank
  • Cutting speed too high
  • Feed too low
  • Clearance angle too small
  • Decrease cutting speed
  • Decrease moving speed
  • Increase clearance angle
Crumbling on
Cutting lips
  • Non rigid conditions, insufficient workpiece clamping
  • When interrupted cut reduce feed
  • Max. wear and tear values have been exceeded
  • Wrong tool type; apply suitable tool
  • Equip accurately workpiece
  • Decrease movement speed
  • Decrease tool changing time
  • Equip accurate tool
    (see application recommendations)
Land wear
  • non rigid conditions,
    insufficient workpiece clamping
  • Deviation from concentricity too large
  • back taper too small
  • Wrong coolant(oil), soluble oil too thin
  • Equip accurately workpiece
  • Check and modify concentricity
  • Increase amount of back taper
  • Increase enable amount of oil
    Use pure oil
Scoring on
tool body
  • Non rigid conditions,
    insufficient workpiece clamping
  • Deviation from concentricity too large
  • When interrupted cut reduce feed
  • For abrasice materials thicken soluble oil if necessary
  • Equip workpiece accurately
  • Check and modify concentricity
  • Decrease movement speed
  • Increase enable amount of oil
    Use pure oil
Crumbling at intersection web
thinningand cutting lip
  • Clearance algle too small
  • excessive honing of cutting lip
  • wrong tool type
  • Increase clearance angle
  • Decrease amount of honing
  • apply suitable tool
    (see application recommendations)
Plastic deformation of
Outer corner
  • cutting speed too high
  • insufficient coolant
  • incorrect or no corner chamfer
  • Decrease cutting speed
  • Apply suitable honing
  • Apply suitable champer
Misalignment,
axis shifting
  • Non rigid conditions,
    insufficient workpiece clamping
  • Deviation from concentricity too large
  • When spotting area transverse
  • Chisel edge too large
  • Equip accurate workpiece
  • Check and modify concentricity
  • Use milling cutter (two-fluted) for spotting
  • Decrease Chisel edge
Heavy burring
on breakthrough
  • Feed too high
  • Max. wear and tear values have been exceeded
  • excessive honing of cutting lip
  • Decrease movement speed
  • Decrease changing tool time
  • Decrease amount of honing in edge
unsatisfactoru surface finish
  • Non rigid conditions
    insufficient workpiece clamping
  • Deviation form concentricity too large
  • insufficient coolant
  • Equip accurate workpiece
  • Check and modify concentricity
  • Increase coolant (volume, pressure)