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Writer:許明愷 | Update time:2009/2/18 下午 03:55:01 |
螺絲斷面積計算英制公式 0.7854﹝D-(0.9743/n)﹞^2 D→規格、n→牙數 假設5/16-18斷面積之算法如下 0.7854﹝0.3125-(0.9743/18)﹞^2 =0.7854﹝0.3125-0.05413﹞^2 =0.7854﹝0.0668﹞ =0.0524inch =33.806mm 規格5/16=0.3125inch 公制公式 0.7854﹝D-(0.9382xP)﹞^2 假設M10-1.25斷面積之算法如下 0.7854﹝10-(0.9382x1.25)﹞^2 =0.7854﹝10-(1.17275)﹞^2 =0.7854﹝77.920﹞ =61.198 =62.00mm |