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7 Heavy chisel edge wear and tear 10 Misalignment, axis shifting
• cutting speed too low • non rigid conditions,
• feed too high insufficient workpiece clamping
• excessive honing of cutting lip • deviation from concentricity too large
• when spotting area transverse
8 Crumbling at intersection web
thinningand cutting lip use milling cutter (two-fluted) for spotting
• chisel edge too large
11 Heavy burring on breakthrough
• clearance angle too small • feed too high
• excessive honing of cutting lip • max. wear and tear values have been exceeded
• wrong tool type; apply suitalbe tool (see appli- • excessive honing of cutting lip
cation recommendations page 20)
9 Plastic deformation of outer corner 12 Unsatisfactory surface finish
Ra
• cutting speed too high • non rigid conditions,
• insufficient coolant; insufficient workpiece clamping
• deviation from concentricity too large
increase coolant (volume, pressure) • insufficient coolant;
• incorrect or no corner chamfer
increase coolant (volume, pressure)
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