Page 14 - NEW_PRODUCT_CATALOG_2022_CZ

Drilling Tool Wear

Edge Chipping Land Wear

Cause Cause
• Low wear resistance carbide grade • Cutting speed too high
• Built-up edge has been formed • Low wear resistance carbide grade
• Insufficient coolant fluid • Radial run-out is too high
Remedy Remedy
• Reduce feed rate • Check that the correct geometry is used
• Increase cutting speed • Check that T.I.R. run-out does not exceed 0.02 mm
• Increase coolant pressure • Reduce cutting speed
• Improve jet direction in case of external coolant supply • Increase coolant pressure
• Change to different geometry • Improve jet direction in case of external coolant supply
• Check tool and part clamping rigidity • Check and improve tool and part clamping rigidity
• Check if pocket gripping forces are too
low - if so, replace the tool body

Corner Fracture Corner Chipping

Cause Cause
Caused by excessive insert wear before indexing the insert • Radial run-out is too high
• The grade and geometry could be too • Insufficient coolant fluid
weak for the applications Remedy
• Excessive load on the insert • Check radial run-out
• Built-up edge has been formed on the insert • Reduce feed rate increase the speed
Remedy • Check tool and part clamping rigidity
• Check radial run-out • Check if pocket gripping forces are too
• Reduce feed rate low - if so, replace the holder
• Increase the speed • Increase coolant pressure
• Check tool and part clamping rigidity • Improve jet direction in case of external coolant supply
• Check if pocket gripping forces are
too low, replace the holder
• Increase coolant pressure
• Improve jet direction in case of external coolant supply

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