Troubleshooting

Some of the more common problems faced by those not familiar with the use of ceramic toolbits are:

Chipping – Probable Causes

  • lack of rigidity
  • not enough chamfer on cutting edge
  • chipbreaker too narrow
  • chatter
  • scale or inclusions
  • improper grinding
  • too much relief
  • defective or burred toolholder or shim seat

Cratering – Probable Causes

  • chipbreaker set too tight
  • nose radius too large
  • side cutting edge angle too great

Cracking or Breaking – Probable Causes

  • insert surfaces not flat
  • insert not seated solidly
  • stopping workpiece while tool is engaged
  • worn or chipped cutting edges
  • feed to heavy
  • improperly applied coolant
  • too much rake or relief
  • too much overhang or tool too small
  • lack of rigidity in setup
  • speed too slow
  • too much variation in depth of cut
  • chatter
  • grinding cracks
  • defective or burred toolholder or shim seat

Chatter – Probable Causes

  • tool not on center
  • insufficient relief and/or clearance
  • too much rake
  • too much overhang or tool too small
  • nose radius too large
  • feed to heavy
  • lack of rigidity
  • insufficient power, or slipping clutch

Torn Finish – Probable Causes

  • lack of rigidity
  • dull tool
  • speed too slow
  • chipbreaker too narrow or too deep
  • improper grinding

Excess Wear – Probable Causes

  • speed too high or feed too light
  • speed too low
  • nose radius too large
  • improper grinding

Questions? Technical phone-support is available

Ask for Tim Maynard or Dave Maynard @ 517-769-6662

9am to 5pm – Eastern Standard Time, Monday through Friday