The chapter outlines the most common approaches for generating 3D computer models, in addition to how these models are viewed and modified on the computer. A particular focus is put on constraintbased modeling and its relationship to documentation, analysis, and manufacturing technologies.
Trang 1Solid Modeling - Swept Solids
Trang 2Swept Solids
Solid primitives can also be created by:
an existing two-dimensional closed
object
The closed two-dimensional objects are called closed profiles
All primitives can be created with a
sweeping operation
Trang 3Extruded Solids
An extrusion is a:
Manufacturing process that involves forcing
a material through a shaped opening
Modeling process that creates a 3D shape
by translating a 2D profile along a linear
path
Trang 4AutoCAD Extrusions
To create an extruded solid in AutoCAD:
Create a close polyline in xy plane of current UCS
Extrude polyline in z direction of current UCS
NOTE: AutoCAD command - EXTRUDE
Trang 5Revolved Solids
A revolution is a modeling process that creates a 3D shape by revolving a 2D profile along a circular path
Trang 6A swept solid is created by moving a 2D profile along a path
NOTE: In AutoCAD, a sweep is created via the EXTRUDE command, using the Path option
Trang 7Solid Modeling - Swept Solids
Hasta la vista!