Section Views

1.Apply the concept of cutting plans to create section views and sectioned 3-D CAD models. pp. 432-436

2.Represent cutting plane lines and section lines using conventional practices. pp. 432-439

3.Create full, half, offset, removed, revolved, broken-out, auxiliary, and assembly section views, using conventional practices. pp. 439-444

4.Create conventional breaks for different materials and cross sections. p. 453

5.Represent ribs, webs, and thin features in section, using conventional practices. p. 450

6.Represent aligned sectioned features, using conventional practices. p. 450

7.Apply section theory to computer models when designing. p. 453

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1.   Define section drawings.

Section drawings are multiview technical drawings that contain special views of a part or parts, views that reveal interior features. p387

2.   Describe how 3-D CAD is used to create section views.

Boolean operations are used to cut the model using planes or solids. p391

3.   Describe how cutting plane lines are used.

Cutting plane lines represent the edge view of the cutting plane and are drawn in the adjacent view to the section view. p391

4.   Sketch the two standard types of cutting plane lines.

p393

5.   List three applications of section views.

Roadway sections, technical illustrations, production drawings. pp387-389

6.   What convention is used for hidden lines in a section view?

Only use hidden lines when they are necessary to show a hidden feature not part of the section. pp398-399

7.   What convention is used for hidden lines on the unsectioned half of a half-section view?

Hidden lines are often added to show hidden features obscured on the sectioned half. p401

8.   Define section lines.

Section lines indicate the material which has been cut by the imaginary cutting plane. pp396

9.   Sketch the material symbol used to represent steel.

p396

10. Describe how thin parts are represented in a section view.

They are not sectioned. pp397-398

11. Describe the difference between a revolved and a removed section view.

A revolved section is made by revolving a cross section view 90° about an axis of revolution and superimposing the section view on the orthographic view.  A removed section is similar except the view is removed to another part of the drawing. pp403-405

12. List some of the standard parts that are not sectioned in an assembly section. Explain why.

Shafts, bearings, ribs, washers, gaskets, rivets, and pins. p405

13. What type of line is used to separate the sectioned half from the unsectioned half of a half-section view?