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

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