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.