Printed from Kezuriba (kezuriba.net/en/troubles/heat/)

Heat generation is large (accuracy loss, shorter tool life)

Turning and milling Turning

Check first

Cutting conditions are too high
Cutting edge geometry with poor sharpness

Try first

Reduce the cutting speed, feed, and depth of cut
Use a sharp breaker with a large rake angle and small honing

?Likely causes

Cutting conditions are too highOne maker^[1][2]
Cutting edge geometry with poor sharpnessOne maker^[1][2]

✓Fixes

Cutting conditions

Reduce the cutting speed, feed, and depth of cutOne maker^[1][2]

Tool

Use a sharp breaker with a large rake angle and small honingOne maker^[1][2]

↔Related problems

Chatter (vibration)Rough, torn, or fuzzy finished surface Dimensions vary or are out of tolerance Built-up edge forms Chips stretch long or tangle Chips are too fine, scatter, or stick Chips clog or jam (milling, end milling)Burrs appear (turning, milling)

📚Sources

Causes and fixes are summarized in our own words from cutting-tool makers’ troubleshooting guides and technical data. “Agreed by 2+ makers” means two or more makers say the same thing.

Mitsubishi Materials — Turning troubleshooting mmc-carbide.com
Mitsubishi Materials — Advanced Turning: Troubleshooting mmc-carbide.com