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Unformatted text preview: er hole in Fig 1(a), a parallelism tolerance of t" = 0.05mm (t" = t) were specified 0.05 B . According to the Standards [e.g. ASME, in the lower feature control frame, i.e. 1994], this tolerance defines a floating tolerance-zone consisting of two parallel planes that are separated by distance t" and that are both always parallel to Datum B. The 52 S. Bhide et al. consequences of this arrangement are that the angle between Datum B and the axis of the hole can never exceed t"/j, yet all other limits to orientational and translational variations remain unchanged from those required by the position tolerance-zone of diameter t. L’ L' Q Q $7 $1 $2 t” t 2 t 2 $6 A $6 $1 $3 P M’ $2 (a) (b) Figure 4 (a) The hypersection λ5 = 0 and (b) The hypersection λ3 = 0 for perpendicularity tolerance applied with position tolerance to an axis. To create hypersections for the Tolerance-Map for parallelism and position tolerances that are specified simultaneously, it is necessary to truncate three of the exist...
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This note was uploaded on 08/03/2010 for the course DD 1234 taught by Professor Zczxc during the Spring '10 term at Magnolia Bible.

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