12-in-1: RPM · Feed · MRR · Power · Drilling · Tapping · Finish · Cost · Time · Chip · Gun Drill · Units
💡 n = (1000 × Vc) / (π × D). Enter any 2 values.
💡 Vf = RPM × Z × fz
💡 Milling: MRR = ap×ae×Vf/1000. Turning: MRR = Vc×ap×fn. ae=0 → turning.
Material — Specific Cutting Force kc (N/mm²)
💡 Pc = MRR×kc/(60000×η), Torque = Pc×9550/RPM, η=0.8
Material — kc (N/mm²)
💡 fz = fn/2. Thrust ≈ kc×D×fn×sin(θ/2)/4000. Torque ≈ kc×D²×fn/8000. Simplified estimates — verify with tool manufacturer.
💡 Vf = RPM × Pitch. Tap drill ⌀ ≈ Major − Pitch. Time per depth = (depth × 60) / (RPM × Pitch).
💡 Ra ≈ fn²/(8×rε) × 1000. Rz ≈ 4×Ra. RMS ≈ Ra×1.11×39.37. Theoretical only — actual finish depends on tool wear, material, vibration.
💡 One input → all 6 conversions. Enter any number above.
💡 Time = (L × 60) / Vf. Parts/hr = 3600 / total_time.
💡 *Assumes 2 min cycle. **Tool + machine rate. Cost/edge = price ÷ edges.
💡 hm = fz × sin(κr). κr=90°→hm=fz. κr=45°→hm≈0.71×fz. Smaller angle=thinner chip=better finish but higher cutting force.
💡 RPM = 1000×Vc/(π×D). Flow ≈ D×0.8 L/min. Pressure estimate: 30-80 bar. For reference only — always follow tool manufacturer guidelines.