Industrial automation systems and integration —
Product data representation and exchange —
Part 47:
Integrated generic resource:
Shape variation tolerances
This document specifies the integrated generic resource constructs for
shape variation tolerances.
This includes the semantic representation of geometrical dimensioning and tolerancing.
The representations of dimensions and tolerances provided by this part of ISO 10303
are appropriate for use with
both 2D and 3D geometric models of parts and are defined independent of a
specific kind of geometry model.
This part of ISO 10303 provides an unambiguous language for geometrical product specification,
to be used and interpreted by computer systems,
that are involved in design, manufacturing and inspection of products.
The following are within the scope of this document:
tolerances as constraints on the shape characteristics of a product;
the specification of the tolerances on a defined shape;
the representation of geometrical tolerances and plus-minus tolerances;
the representation of tolerance values;
the representation of dimensions;
the assignment of size characteristics to a shape;
the assignment of location and orientation characteristics to a shape;
the specification of datums and datum systems that are established by referencing datums;
the identification of derived shape elements such as centre lines and intersections;
the structure for limit and fit systems for shapes.
The following are outside the scope of this document:
the definition of the fundamental principles, concepts and terminology of tolerancing and dimensioning;
the mathematical definition of tolerances and datums;
the description of dimensioning or tolerancing practices;
the specification of dimensional inspection methods;
the synthesis and analysis of tolerances;
the tolerancing of product characteristics other than shape;
the presentation of tolerances on engineering drawings or on 2D or 3D geometry models;
the specification of surface finish or surface roughness.