￠8~20mm16Mn高速线材生产工艺设计(14)
同理，也可得出Ф15mm和Ф20mm产品圆孔设计如下表：
表6-8 Ф15mm产品椭圆孔型计算结果 单位/mm
机架号 d hk bk s r R b δ
29 15 10.8 27 2.7 2.7 24.525 25.03 0.927
27 18.3 13.176 32.94 3.294 3.294 29.921 30.34 0.921
25 22.3 16.056 40.14 4.014 4.014 36.461 35.76 0.891
23 27.2 19.584 48.96 4.896 4.896 44.472 45.78 0.935
21 33.2 23.904 59.76 5.976 5.976 54.282 54.62 0.914
19 40.5 29.16 72.9 7.29 7.29 66.218 67.29 0.923
17 49.4 35.568 88.92 8.892 8.892 80.769 82.96 0.933
15 60.3 43.416 108.54 10.854 10.854 98.591 102.68 0.946
13 73.5 52.92 132.3 13.23 13.23 120.173 124.76 0.943
11 89.7 64.584 161.46 16.146 16.146 146.660 152.26 0.943
9 109.4 78.768 196.92 19.692 19.692 178.869 185.89 0.944
7 133.5 96.12 240.3 24.03 24.03 218.273 228.04 0.949
5 162.8 117.216 293.04 29.304 29.304 266.178 277.22 0.946
表6-9 Ф20mm产品椭圆孔型计算结果 单位/mm
机架号 d hk bk s r R b δ
29 20 14.4 36 3.6 3.6 32.700 33.37 0.927
27 24.4 17.568 43.92 4.392 4.392 39.894 40.45 0.921
25 29.8 21.456 53.64 5.364 5.364 48.723 47.79 0.891
23 36.3 26.136 65.34 6.534 6.534 59.351 61.09 0.935
21 44.3 31.896 79.74 7.974 7.974 72.431 72.88 0.914
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