2021年机械加工自由公差表

*欧阳光明*欧阳光明*创编2021.03.07*欧阳光明*欧阳光明*创编2021.03.07（GB/T18042000）（mm）0.5~3＞3~6＞6~30＞＞＞＞30~120120~400400~10001000~2000精密f±0.05±0.05±0.1±0.15±0.2±0.3±0.5中等m±0.1±0.1±0.2±0.3±0.5±0.8±1.2粗糙e±0.2±0.3±0.5±0.8±1.2±2±3最粗v±0.5±1±1.5±2.5±4±6欧阳光明基本尺寸分段公差品级欧阳光明基本尺寸分段公差品级公差品级公差品级基本尺寸分段0.5~3＞3~6＞6~30＞30精密f中等m粗糙e最粗v±0.2±0.5±1±2±0.4±1±2±4角度尺寸的极限偏差数值（GB/T18042000）基本尺寸分段~10＞10~50＞50~120＞120~400＞400±1°±30′±20′±10′±5′±1°30′±1°±30′±20′±10′±3°±2°±1°±30′±20′公差品级精密f公差品级精密f中等m粗糙e最粗v直线度和平面度未注公差值（GB/T11841996）（mm）公差品级公差品级基本长度规模≤10＞10~30＞30~100＞100~300＞300~1000＞1000~3000H0.030.050.10.20.30.4K0.050.10.20.40.60.8L0.10.20.40.81.21.6垂直度未注公差值（GB/T11841996）（mm）≤100＞100~300＞300~1000＞1000~3000H0.20.30.40.5K0.40.60.81L0.411.52公差品级基本长度规模对称度未注公差值（GB/T11841996）（mm）公差品级基本长度规模公差品级基本长度规模≤100＞100~300 ＞300~1000＞1000~3000H0.5K0.60.8 1L0.61 1.52圆跳动的未注公差值（GB/T11841996）（mm）公差品级公差品级圆跳动公差值H0.1K0.2L0.33.概略粗糙度零件的概略都应该注明粗糙度的品级。如果较多的概略具有相同其余Ra(μm)＞0.003~0.02Rz(μm)＞0.025~0.10取样长度Ra(μm)＞0.003~0.02Rz(μm)＞0.025~0.10取样长度l(mm)0.08评定长度ln(mm)0.4＞0.02~0.10＞0.1~0.500.251.25＞0.1~2.0＞0.50~10.00.84.0＞2.0~10.0＞10.0~502.512.5＞10.0~80＞50~3208.040.0Ra的数值（GB/T10311995）（μm）第1系列 0.012,0.025,0.050,0.10,0.20,0.40,0.80,1.60,3.2,6.3,12.5,25,50,100第2系列 0.008,0.010,0.016,0.020,0.032,0.040,0.063,0.080,0.125,0.160,0.25,0.32,0.50,0.63,1.0,1.25,2.0,2.5,4.0,5.0,8.0,10.0,16.0,20,32,40,63,80注：尽量选择第1系列轮廓最年夜高度Rz的数值（GB/T10311995）（μm）第1系列 0.025,0.050,0.100,0.20,0.40,0.80,1.60,3.2,6.3,12.5,25,50,100，200，400，800，1600，第2系列 0.032,0.040,0.063,0.080,0.125,0.160,0.25,0.32,0.50,0.63,1.0,1