車削表面粗度計算機
Estimate the ideal theoretical turning surface roughness Ra and peak-to-valley cusp height from feed per revolution and tool nose radius.
結果是根據上述輸入參數計算得出的；範例數值僅供說明之用，並非針對特定工具的速度／進給建議。.
公式與計算方法
Ra ≈ 1000 f² / (32 r) µm; Rt ≈ 1000 f² / (8 r) µm; ideal target feed ≈ sqrt(32 r Ra / 1000).
Theoretical turned finish improves with a smaller feed per revolution or a larger tool nose radius. The commonly used ideal geometric model gives Ra approximately f²/(32r), with consistent length units. The exact circle-based maximum cusp height is r − sqrt(r²−f²/4). The inverse result is a theoretical feed value to compare with actual machine and tool constraints.
重要假設與限制
Not a prediction of measured Ra or a substitute for surface inspection. Insert wiper geometry, chatter, built-up edge, machine rigidity, workpiece material and edge preparation affect measured finish. Use the inverse result only as a first-pass geometric estimate.
常見問題
Will the actual Ra match this result?
Not necessarily. This calculator estimates the feed-mark geometry under ideal stable conditions.
Can I keep increasing corner radius to improve finish?
An excessively large nose radius may raise cutting forces or chatter; assess the whole setup.
技術參考資料： Machining Doctor — Turning Calculators. 針對 ONMY 的計算是獨立進行的；來源連結並不代表任何背書。.
