- Objectives
- Objectives
- Overview
- Overview
- Coordinates for 3D Cad Modeling
- Coordinates for 3D Cad Modeling
- Geometric Entities
- Geometric Entities
- 4.1 Manually Bisecting a Line or Circular Arc
- 4.1 Manually Bisecting a Line or Circular Arc
- 4.2 Drawing Tangents to Two Circles
- 4.2 Drawing Tangents to Two Circles
- 4.3 Drawing an Arc Tangent to a Line or Arc and through a Point
- 4.3 Drawing an Arc Tangent to a Line or Arc and through a Point
- 4.4 Bisecting an Angle
- 4.4 Bisecting an Angle
- 4.5 Drawing a Line through a Point and Parallel to a Line
- 4.5 Drawing a Line through a Point and Parallel to a Line
- 4.6 Drawing a Triangle with Sides Given
- 4.6 Drawing a Triangle with Sides Given
- 4.7 Drawing a Right Triangle with Hypotenuse and One Side Given
- 4.7 Drawing a Right Triangle with Hypotenuse and One Side Given
- 4.8 Laying Out an Angle
- 4.8 Laying Out an Angle
- 4.9 Drawing an Equilateral Triangle
- 4.9 Drawing an Equilateral Triangle
- 4.10 Polygons
- 4.10 Polygons
- 4.11 Drawing a Regular Pentagon
- 4.11 Drawing a Regular Pentagon
- 4.12 Drawing a Hexagon
- 4.12 Drawing a Hexagon
- 4.13 Ellipses
- 4.13 Ellipses
- 4.14 Spline Curves
- 4.14 Spline Curves
- 4.15 Geometric Relationships
- 4.15 Geometric Relationships
- 4.16 Solid Primitives
- 4.16 Solid Primitives
- 4.17 Recognizing Symmetry
- 4.17 Recognizing Symmetry
- 4.18 Extruded Forms
- 4.18 Extruded Forms
- 4.19 Revolved Forms
- 4.19 Revolved Forms
- 4.20 Irregular Surfaces
- 4.20 Irregular Surfaces
- 4.21 User Coordinate Systems
- 4.21 User Coordinate Systems
- 4.22 Transformations
- 4.22 Transformations
- Key Words
- Key Words
- Chapter Summary
- Chapter Summary
- Skills Summary
- Skills Summary
- Review Questions
- Review Questions
- Chapter Exercises
- Chapter Exercises
This chapter is from the book
This chapter is from the book
This chapter is from the book
4.19 Revolved Forms
Revolution creates 3D forms from basic shapes by revolving a 2D profile around an axis to create a closed solid object. To create a revolved solid, create the 2D shape to be revolved, specify an axis about which to revolve it, then indicate the number of degrees of revolution. Figure 4.72 shows some shapes created by revolution.
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4.72 Revolved Shapes. Each of the solids shown here was created by revolving a 2D shape around an axis.
Often, a 2D sketch is used to create 3D CAD models. Look at the examples shown in Figure 4.73 and match them to the 2D profile used to create the part. For each part, decide whether extrusion, revolution, or sweeping was used to create it.
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4.73 What operation would you choose to transform the profiles shown in (a) into the models in (b)?
