Grooving and parting are deceptively complex. Wrong tool selection causes blade breakage, poor finish, burrs.
Grooving vs Parting
- Grooving — Cuts a controlled-width channel
- Parting — Cuts the part free from bar stock
Insert Width
Standard sizes: 1.5mm, 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm. Match width to specification.
Insert Code (Iscar Pent-Cut)
GFN 3J IC908
- GFN — Insert series
- 3 — Cut width in mm
- J — Geometry (J=high-feed, M=medium, F=finishing)
- IC908 — Carbide grade
Toolholder Selection
- Internal grooving — Boring-bar style, through-coolant for chips
- External grooving — Square-shank or modular block
- Parting — Blade-style, must align perpendicular to spindle
Cutting Parameters
| Material | Vc (m/min) | Feed (mm/rev) |
|---|---|---|
| Carbon steel 1045 | 120-180 | 0.06-0.12 |
| Stainless 304 | 80-120 | 0.04-0.08 |
| Aluminum 6061 | 200-400 | 0.10-0.20 |
Avoiding Blade Breakage
- Center insert on spindle axis (off-center = lateral force = breakage)
- Rigid toolholder mounted close to turret
- Maintain feed (too low = rubbing, too high = overload)
- Coolant directed AT cut point
Browse grooving and parting inserts.
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