Libreng Engineering Tool #212

Turning Surface Finish Calculator

Kalkulahin ang theoretical surface roughness Ra para sa turning. Ilagay ang feed per revolution at tool nose radius.

Ra = f² / (32 × r)TurningAuto-Calc
Quick presets

Results

Theoretical Ra
Rt (peak-to-valley)
Inaasahang Aktwal na Ra (×2)

Teoretikal na Kagaspangan ng Ibabaw

  • Ra — average arithmetic roughness (μm)
  • Rt — peak-to-valley roughness (μm)
  • f — feed per revolution (mm/rev)
  • r — radius ng tool nose (mm)
Halimbawa — Karaniwang turning

Given: f = 0.20 mm/rev, r = 0.8 mm

Ra = 0.20² / (32 × 0.8) = 0.04 / 25.6 = 0.00156 mm = 1.56 μm

Rt = 0.20² / (8 × 0.8) = 0.04 / 6.4 = 6.25 μm

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