CAD Standards

Why do we need CAD standards?

• •Different vendors (manufacturing) uses many types of CAD/CAM applications.

• To perform hardware upgrade

• The need for data standardization to link different hardware and software system.

• To have a good graphic output.

Which one below is not a standard file?

• GKS

• IGES

• STEP

• doc

What is the use of GKS

• Defines a common interface to interactive computer

  graphics for creating, manipulating, and displaying or

  printing computer graphics on different types of

  computer graphics output devices

• The most comprehensive standard and is designed to transmit the entire product definition including that of manufacturing and any other associated information

• A series of International Standards with goal of defining data across full engineering and manufacturing life cycle

• Standard methods for exchanging the data electronically between two different systems

IGES stand for?

Which is FALSE on STEP file?

• Officially is ISO standard 10303 (Product data representation and exchange)

• STEP was born in 1983, as the merger of previous national efforts such as IGES, VDAFS, SET, CAD*I, and PDDI.

• After years of effort, completion of STEP files include the EXPRESS information modeling language and the first application protocol, AP203, for exchanging BREP mechanical CAD geometry

• AP 205 is the application protocol for Explicit Draughting.

Explain how to communicate a 2D drawing file? Suggest how one 2D drawing can be transfer to another system.

Which combination is correct? The answer could be more than one answer

• 1- WCS

  2- UCS

• 1- UCS

  2- DCS

• 1- Model Coordinate System

  2- User coordinate system

• 1- Screen Coordinate system

  2 - World coordinate system