AndrewTT
Mechanical
- Jul 14, 2016
- 261
In figure 5-13, the circularity (free state) FCF is associated with the size dimension. Is this an error in the standard or is there something about the free state modifier that allows this? I cannot find any wording in the text showing that circularity is anything other than a surface control, which means the FCF should not be associated with the size dimension, but should have a leader or extension line going to the surface to be controlled.
Also, figure 5-14 has the circularity FCF (free state) aligned with the size dimension. This is consistent with figure 5-13.
Figure 5-13 & 5-14 are consistent with how flatness DMP and straightness DML are denoted (FCF associated with the size dimension). All three of these form controls (free state, FDMP, SDML) do not have rule #1 apply to them. Is this why the circularity FCF is associated with the size dimension in figures 5-13 & 5-14?
Would it be wrong to have the circularity FCF, in figure 5-13 & 5-14, shown independent of the size dimension, with a leader going to the surface to be controlled?
Also, figure 5-14 has the circularity FCF (free state) aligned with the size dimension. This is consistent with figure 5-13.
Figure 5-13 & 5-14 are consistent with how flatness DMP and straightness DML are denoted (FCF associated with the size dimension). All three of these form controls (free state, FDMP, SDML) do not have rule #1 apply to them. Is this why the circularity FCF is associated with the size dimension in figures 5-13 & 5-14?
Would it be wrong to have the circularity FCF, in figure 5-13 & 5-14, shown independent of the size dimension, with a leader going to the surface to be controlled?