ABSTRACT

Engineering drawings are the traditional way to represent product information, including the nominal geometry, dimensions and tolerances and other technological specifications, such as the mechanical properties of materials and method of heat treatment, initial status of stock (e.g. cast, forged or pre-cut), functional and structural requirements. Drawings are produced by the design team and passed to the production engineers who interpret the information to find appropriate manufacturing processes. The tasks involved in such a

traditional design and manufacturing procedure are increasingly being replaced by computerised systems (CAD/CAM).