Section Views

TECH 1521

Section Views

Use to show interior detail.

Full Section

Example: Flywheel

Standard Orthographic Views

Cutting Plane

Divides the solid

Has a direction

Section View

Cross hatching shows the solid areas that were cut.

HATCH

or�BHATCH

On the printed drawing, section lines should be about 1/16 to 1/8 inch apart.

Hatch Patterns

ANSI/ASME &

ISO Designations

HATCHEDIT to change patterns of existing hatching.

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AutoCAD has many others including solid and gradient hatches.

CAD Hatching

• Can be associative or non-associative.
• Is usually maintained as a single entity.
• Even if it appears in two different places.
• Needs some kind of boundary.
• Use EXPLODE to break hatching into individual entities.

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Sectioning Multiple Components

Hatch directions are varied by component

Types of Sections

Full Section

Half Section

Broken-out Section

Revolved Section

Removed Section

Offset Section

Aligned Section

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Full Section

Cutting plane goes straight through the complete part.

Half Section

Usually used for symmetrical parts such as cylinders.

Broken-Out Section

Revolved Section

Sometimes done with a break in the view, sometimes not.

Removed Section

Offset Section

Note: Don't show the section line edge as visible.

Aligned Section

Don't hatch ribs or webs. Sometimes it is more clear to hatch with a broader pattern. (Usually only do this if the feature disappears in section)

Be careful about aligning hatch pattern with visible lines!

Notice: Not true projection! (see)