鏜刀撓度計算器
Estimate static tip deflection and clamp bending moment for a round boring bar under an assumed transverse cutting force.
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
δ = F L³ / (3 E I); I = π D⁴ / 64; clamp moment = F × L.
The solid round bar is modeled as a cantilever with the applied transverse force at the free end. Deflection increases with the cube of overhang and decreases with the fourth power of bar diameter. This demonstrates why reducing boring bar overhang is often effective in improving machining stability.
重要假設與限制
Static elastic beam model only; not a chatter predictor. Assumes solid uniform circular cross-section, rigid clamp and force perpendicular to the bar. Internal coolant passages, joints, dampers, insert holder geometry and dynamic cutting may make actual deflection different.
常見問題
Why does extra overhang matter so much?
In the simple cantilever model, deflection scales with overhang cubed.
Does a harder steel bar automatically deflect less?
Not necessarily; elastic modulus, diameter and overhang dominate static deflection.
技術參考資料： Machining Doctor — Boring Bar Deflection. 針對 ONMY 的計算是獨立進行的；來源連結並不代表任何背書。.
