ASME Y14.8:2022 pdf free download

ASME Y14.8:2022 pdf free download.Castings, Forgings, and Molded Parts.
5.7 MOLD LINE DIMENSIONS AND TOLERANCES
Dimensions and tolerances (size, position. etc.) shall be applied at the mold line(s) at one end of Features unless otherwise speciFied. See Figures 5-12 and 5-1 3.and Figure 5-14. illustration (a).
5.7.i CIrcuLar Mold Line
The following text is a description or design intent. where a position tolerance is associated with a drafted feature dimensioned to mold lines, on drawings of parts prepared in accordance with this Standard.
Basic dimensions (shown or not shown) in the rigures of this Section locate and orient the tolerance zone relative to the specified datum reference frame. Because cube draft. the feature Is dimensioned to the mold line (the theoretical Ilnegenerated at the Intersection of the extended draft and the dimensioned end of the feature). The feature will be a circular mold line. The mold line center point must fall within the tolerance zone defined in the feature control frame associated with the size dimension. The tolerance zone Is a circle. See Figures 5-12 and 5-13,
5.7.2 ParaLlel Line Elements at a Mold Line
The following text is a description of design intent. where a position tolerance is associated with a drafted feature dimensioned to mold lines, on drawings of parts prepared In accordance with this Standard.
Basic dimensions (shown or not shown) in the figures of this Section locate and orient the tolerance zone relative to the specified datum reference frame. Because of the draft, the feature Is dimensioned to the mold lines (the theore• tical lines generated at the intersection of the extended draft and the dimensioned end of the feature). The feature comprises the two parallel mold lines. The mold line center line must fall within the tolerance zone defined In the feature control frame associated with the size dimension. The tolerance zone Is two parallel lines. See Figure 5-14, illustration (d).
5.8 FULL FEATURE MODIFIER
The note ‘FULL FEATURE or a full feature symbol Is used as a modifier applied to a position or orientation tolerance (perpendicularity, parallelism, or angularity). A full feature modifier may be applied to a feature control frame that is placed below a sl2e tolerance that applies to one mold line of a drafted Feature. When a full feature modifier is applied, the associated tolerance controls the feature’s full feature axis or full feature center plane, rather than the default control, which applies to the mold line center point or mold line center line atone end of the drafted feature. The tolerance zone for the position or orientation tolerance is hounded by the mold line at each end of the feature.