Đang tải... (xem toàn văn)
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 constraint-based modeling and its relationship to documentation, analysis, and manufacturing technologies.
Solid Modeling Swept Solids Swept Solids Solid primitives can also be created by: Extruding Revolving Sweeping an existing twodimensional closed object The closed twodimensional objects are called closed profiles All primitives can be created with a sweeping operation Extruded 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 AutoCAD 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 Revolved Solids A revolution is a modeling process that creates a 3D shape by revolving a 2D profile along a circular path NOTE: AutoCAD command REVOLVE Sweeps A 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 Solid Modeling Swept Solids Hasta la vista! ... NOTE: In AutoCAD, a sweep is created via the EXTRUDE command, using the Path option Solid Modeling Swept Solids Hasta la vista! .. .Swept Solids Solid primitives can also be created by: Extruding Revolving Sweeping an existing twodimensional closed ... 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 Revolved Solids A revolution is a modeling process that