Q. Functional areas of geometric modeling?

Drafting

• Automatic planar cross-sectioning.

• Automatic hidden lines and surface removal.

• Automatic production of shaded images.

• Automatic dimensioning.

• Automatic creation of exploded views of assemblies.

Manufacturing

• Parts classification.
• Process Planning.
• NC data generation and verification.
• Robot program generation.

Production Engineering

• Bill of materials.
• Material requirement.
• Manufacturing resource requirement.
• Scheduling.

Inspection and Quality Control

• Program generation for inspection machines.
• Comparison of produced parts with design.

Depending upon the requirements of the user and the capabilities of CAD system, a geometric model constructs a product in one of 2-D, 2½-D and 3-D type models. A 2-D model represents a plane figure, i.e. with length, breadth and ‘0' (zero) thickness. A 2½-D model represents a component with length, breadth but constant thickness.

A 3-D model represents any generalized part shape having length, breadth and thickness as well.