Asme y14.5 pdf pdf#

In this instance, the derived median plane must lie in a tolerance zone between two parallel planes separated by the amount of the tolerance.Ħ.4.1 Orientation Tolerance Zone An orientation tolerance specifies a zone within which the considered feature, its line elements, its axis, or its center plane must be contained. 5.4.1.2, flatness may be applied on an RFS, MMC, or LMC basis to noncylindrical features of size. As an extension of the princi- ples of para. 5.4.2.1 Application of Flatness RFS, MMC, or LMC to Noncylindrical Features. When the independency symbol is applied to the size dimension, the requirement for perfect form at MMC is removed and the form tolerance may be larger than the size tolerance. With flatness of a surface, where the con- sidered surface is associated with a size dimension, the flatness tolerance must be less than the size tolerance. It is placed in a view where the sur- face elements to be controlled are represented by a line. When a flatness tolerance is spec- ified on a surface, the feature control frame is attached to a leader directed to the surface or to an extension line of the surface. A flat- ness tolerance specifies a tolerance zone defined by two parallel planes within which the surface or derived median plane must lie.

Asme y14.5 pdf pdf#

ASME Y14.5-2009 pdf download.Dimensioning and Tolerancing.ĥ.4.2 Flatness Flatness is the condition of a surface or derived median plane having all elements in one plane.