Page 259 - Fanar
P. 259
Technical Information i
Problem: Excessive wear of the cutting edge
Excessive runout Use grip with better mounting precision
Excessive feed Decrease feed.
Discontinuous cutting process Check coolant pressure
Low rigidity of tool holding system Check rigidity of tool’s mount in the grip
Problem: Chipping on cutting edge
Excessive runout Use grip with better mounting precision
Unstable cutting conditions Check cutting parameters
Critical tool wear Change tool more often
Too hard material Select tool suitable for workpiece material
Problem: Wear on the lands
Excessive runout Use grip with better mounting precision
Low coolant pressure Use pure oil or emulsion with more oil content
Too high cutting speed Decrease cutting speed
Buildup formed by workpiece material Select tool suitable for workpiece material
Problem: Wear of the chisel edge
Too low cutting speed Increase cutting speed
Excessive feed Decrease feed
Too small chisel Check dimensions
Problem: Plastic deformation
Too high cutting speed Decrease cutting speed
Excessive feed Decrease feed
Poor coolant supply Check coolant pressure and setting of nozzles
Too low rigidity of tool holding system Use VHM drill bit
Problem: Abrasion of coating from the edge
Too much friction Apply coolant with greater content of oil or additives
Remove at an angle Decrease feeding speed at removal
Buildup formed by workpiece material Reduce number of tool’s regenerations
Problem: Chip block
Too low cutting speed Increase cutting speed
Excessive feed Decrease feed
Too small chip flutes Select tool with proper geometry
Poor rinsing off chips Apply internal cooling
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