2021年機械加工自由公差表

*歐陽光明*歐陽光明*創(chuàng)編2021.03.07*歐陽光明*歐陽光明*創(chuàng)編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歐陽光明基本尺寸分段公差品級歐陽光明基本尺寸分段公差品級公差品級公差品級基本尺寸分段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角度尺寸的極限偏差數值（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′公差品級精密f公差品級精密f中等m粗糙e最粗v直線度和平面度未注公差值（GB/T11841996）（mm）公差品級公差品級基本長度規(guī)?！?0＞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公差品級基本長度規(guī)模對稱度未注公差值（GB/T11841996）（mm）公差品級基本長度規(guī)模公差品級基本長度規(guī)模≤100＞100~300 ＞300~1000＞1000~3000H0.5K0.60.8 1L0.61 1.52圓跳動的未注公差值（GB/T11841996）（mm）公差品級公差品級圓跳動公差值H0.1K0.2L0.33.概略粗糙度零件的概略都應該注明粗糙度的品級。如果較多的概略具有相同其余Ra(μm)＞0.003~0.02Rz(μm)＞0.025~0.10取樣長度Ra(μm)＞0.003~0.02Rz(μm)＞0.025~0.10取樣長度l(mm)0.08評定長度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的數值（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：盡量選擇第1系列輪廓最年夜高度Rz的數值（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