Page 119 - Aluminum_Machining_catalog_2023

USER GUIDE

Troubleshooting

Cone Hole Deflection

Rotating Drill Rotating Drill INDEXABLE DRILLING INSERT
• Use shorter drill overhang (if possible). • Use shorter drill overhang (if possible).
• Reduce feed by 30-50%. • Reduce feed by 30-50%.
• Check that overlapping is correct • Check that overlapping is correct
between inner and outer inserts. between inner and outer inserts.
• Check inner insert is positioned over center • Check inner insert is positioned over center within its limits.
within its limits. • Increase coolant pressure.
• Increase coolant pressure. • Stabilize clamping device.
Non-Rotating Drill Non-Rotating Drill
• Check misalignment. • Check misalignment.
• Check that overlapping is correct • Check that overlapping is correct
between inner and outer inserts. between inner and outer inserts.
• Check inner insert is positioned over center • Check inner insert is positioned over center within its limits.
within its limits. • Rotate drill 180 degrees.
• Rotate drill 180 degrees. • Increase coolant pressure.
• Increase coolant pressure.

Broken Screw
Bad Surface Finish

• Use recommended torque wrench.
• Lubricate the screw before tightening.

Rotating Drill Insufficient Machine Power
• Improve chip formation (change cutting condition).
• Increase coolant pressure.
• Increase speed and reduce feed.
• Stabilize clamping device.
Non-Rotating Drill
• Improve chip formation (change cutting condition).
• Increase coolant pressure. • Reduce speed and feed.
• Increase speed and reduce feed.
• Stabilize clamping device. Insufficient Machine Torque
Chip Jamming

• Reduce feed.
Rotating Drill
• Improve chip formation (change or cutting condition).
• Increase coolant pressure.
Non-Rotating Drill
• Improve chip formation (change or cutting condition).
• Increase coolant pressure.

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