introduction to engineering section views - 1
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Introduction to Engineering Section Views - 1. Agenda Why section views are needed Types of section views Reference Bertoline, Chapter 3, Sections 3.1-3.4. - PowerPoint PPT PresentationTRANSCRIPT
Introduction to EngineeringSection Views - 1
AgendaWhy section views are neededTypes of section views
Reference Bertoline, Chapter 3, Sections 3.1-3.4
Section views are used when important hidden details are in the interior of an object. These details appear as hidden lines in one of the orthographic principal views; therefore, their shapes are not very well described by pure orthographic projection.
Section Views
Types Of Section Views
Full sectionsHalf sectionsOffset sectionsBroken-out sectionsRevolved sectionsRemoved sections
Cutting Plane
Section views show how an object would look if a cutting plane (or saw) cut through the object and the material in front of the cutting plane is removed
Figure 3.3
Section Lines
Section lines (crosshatching) are used to show where the cutting plane passed through solid material
Figure 3.9
Section Lines
Section lines can be used to show different types of materials or different parts of the same material.
Refer to text for a complete list (Figure 3.8)
Full Section View
In a full section view, the cutting plane cuts across the entire object
Note that hidden lines become visible in a section view
Full Section View
Show cutting plane in the top viewMake a full section on the front view
Full Section View
Note how the cutting plane is drawn and how the crosshatching lines mark the surfaces of material cut by the cutting plane. No hidden lines on the section view, if possible.Note: Interior lines behind cutting plane became visible.
Half Section View
The cutting planes do not cut all the way through to the object. They cut only half way, stopping at the centerline.
Half Section View
Half Section used mainly for symmetric objects
Video #17Drawing Full and Half Sections
Assignment #32: Full & Half Sections Handout
Read Bertoline, Chapter #3, Sections 3.1-3.4
Assignment #32 (Start in Class) Follow the instructions to make full and half
section views on the handout provided. On a piece of isometric grid paper, draw an
isometric view of a full section of the object in Assignment #32.