A478 BT SBT DAT CAT ISO HSK SAF TAP AID INSERT MILLING TURNING BORING ACCESSORIES VDI PSC HSK-T NT 刀具動平衡等級標準與要求 STANDARDS AND REQUIREMENTS TOOL BALANCING 動平衡等級Balance Grade G0.4 G1 G2.5 G6.3 G16 G40 G100 G250 G630 G1600 G4000 Precision Required exw(mm/s) 0.4 1 2.5 6.3 16 40 100 250 630 1600 4000 exw(µm＊rpm) 3820 9549 23875 60165 152800 382000 954900 2387500 6016500 15280000 38200000 2000 3000 6000 10000 15000 20000 30000 50000 主軸轉速 Maximal operational speed n (rpm) 允許相關剩餘的不平衡狀態 e per(μm) or g-mm/kg (多數偏心狀態下) Permitted related residual imbalance e per(μm) or g-mm/kg (mass-eccentricity) 0.08 0.1 0.125 0.16 0.2 0.25 0.315 0.4 0.5 0.63 0.8 1 1.25 2 2.5 3.15 4 5 6.3 8 10 12.5 16 20 25 31.5 40 50 63 80 100 125 160 200 250 315 400 500 1.6 G0.4 G1 G2.5 G6.3 G16 G40 Setting of the balance series is according to ISO-1940 standard. The formula as follows: 動平衡級數設定是根據ISO-1940的標準，其計算公式如下: Unbalance value calculation: Already known the speed, weight, and the unbalance amount. Be able to calculate the proper balance grade. 不平衡值計算: 已知轉速、重量、與不平衡量可計算符合之動平衡等級: U = M x e U = x 9549 G x M n G = 9549 x M n x U U =不平衡量 Unbalance(g-mm) e =偏心距離 Eccentric distance(mm) M =轉子重量 Poter weight(kg) G =不平衡值等級 Unbalance series n =轉速 (rpm) 9549=常數Constant L Center Of Gravity Eccentric Distance 偏心距離 (e) 迴轉重心 重心 Gyratory Center
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