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Technical DrawingSectioning

School : Ardenne High SchoolName : Delano SeniorTeacher : Ms. AllisonClass : 114H

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This technique is used to show the exterior and interior of a symmetrical object in a single

projection view. The cutting plane cuts halfway to the axis or center of the object. A quarter of

the object is imagined to be removed. The resulting drawing view is a half outside and half

section view.

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A broken-out section view cuts away a portion of an assembly in a drawing view to expose the

inside. Cross hatching is automatically generated on the sectioned faces of all components. A

broken-out section is part of an existing drawing view, not a separate view. A closed profile,

usually a spline, defines the broken-out section. Material is removed to a specified depth to

expose inner details. Specify the depth by setting a number or by selecting geometry in a

drawing view. You cannot create a broken-out section on a detail, section, or alternate position

view. If you create a broken-out section of an exploded view, you cannot collapse the explodedview.

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Revolved section shows only the features on the cut plane. It is used to depict the section of an

elongated object without the need to show the entire sectional view. Instead of projecting the

section onto an adjacent view, the resulting section obtained from the cutting is revolved 90

and is placed on the same view.

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If the important internal features of an object are not lying on a single plane, a full section may

not be able to show all the details. Offset section is a technique whereby the cutting plane offsets

to pass through various features that would otherwise be missed by a full section. Thick lines

should be used at the change of direction of the cutting plane.

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You can create an aligned section view in a drawing through a model, or portion of a model, that

is aligned with a selected section line segment. The aligned section view is similar to a Section

View, but the section line for an aligned section comprises two or more lines connected at an

angle. The aligned section rotates the cut into the plane of the selected segment. Aligned section

views are typically used for sectioning features that would appear foreshortened in regularsection views.

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Removed section is similar to revolved section in that only the cut plane is shown. However, the

section is placed elsewhere on the drawing.

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Part section is a technique that is used to expose a small part of the interior of an object by

removing a small part of the object. The view is basically an outside view with a small portion

removed. The break line is illustrated with irregular thin continuous lines.