表面粗糙度与形状公差、尺寸公差的关系 表面粗糙度与设表面粗糙度值为Ra、Rz,表面形状公差值为t , 尺寸公差值为Tt = 0.6T ,Ra ≤ 0.05T ,Ra ≤ 0.025T
1 Ra = t , 12Ra = 1 t, 16
Rz ≤ 0.2T ,
Rz = Rz =
1 t 2 1 t 4
t = 0.4T ,
Rz ≤ 0.1T ,Rz ≤ 0.05T ,
t = 0.25T , t = 0.25T ,
Ra ≤ 0.012T
1 Ra = t , 20
1 Rz = t 5
Ra ≤ 0.15t
Rz ≤ 0.6t