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BS ISO 13715:2014 pdf free

BS ISO 13715:2014 pdf free.Technical product documentation一Edges of undefined shape-Indication and dimensioning
BS ISO 13715 specifies rules for the indication and dimensioning of undefined edges in technical product documentation.The proportions and dimensions of the graphical symbols to be used are also specified.
NOTE The undefined edge can only be specified in 2D drawings.
In cases where the geometrically defined shape of an edge (for example 1×45°) is required, the general dimensioning principles given in ISO 129-1 apply.
The following document, in whole or in part, is normatively referenced in this document and is indispensable for its application. For dated references, only the edition cited applies. For undated references,the latest edition of the referenced document (including any amendments) applies.
ISO 3098-0:1997, Technical product documentation一Lettering 一Part 0: General requirements
transition line, included in an intersection plane, which is not defined on the nominal model and which exists between two adjacent integral surfaces
The deviation from ideal nominal shape can be controlled by indication of a size. The value is placed after the symbol element +, – or tin the area a1(see Figure A.1).
When a single limit for the size of an edge is specified, the second limit deviation is the value 0 (zero).
Whenever the specification of an upper and lower limit deviation for the size of an edge is necessary, both values shall be indicated. The upper limit deviation is placed above the lower limit deviation (see Figure 10).
The indicated limit deviations correspond to the maximum and minimum dimensions, respectively.When a particular direction of burr or undercut is required, the indication shall be positioned accordingly (4.4).
NOTE The thickness of burrs on exernal edges and the thickness of undercuts of internal edges can not be specified according this standard.
Wherever indication of one direction of burr on an external edge or undercut on an internal edge is needed,the indication of size shall be given in the area a2 or a3 (see Figure A.1), accordingly (see Figures 11, 12 and 13).BS ISO 13715 pdf free download.

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