Choosing CNC Lathe Tools: Tooling Tips for Mount Core Turning

Tool Materials

• Carbide: Mainstream, wear resistant
• Coated carbide: (TiN/TiCN/Al2O3) 2-3x longer life
• CBN/ceramic: Hardened steel finishing

Geometry

• Rake: Positive rake for light cuts, thin walls
• Clearance: More for finishing, less friction
• Nose radius: R0.2-0.4 for finish, balance finish and edge

Small Precision Parts

• Short tool overhang for rigidity
• Finish allowance 0.2-0.3mm
• Change inserts when edge wear reaches 0.2mm
• Speed 150-250 m/min for steel

Huami Practice

Huami uses coated carbide tools with scheduled insert changes for stable batch quality.