Class 10_1
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Class 10_1 • Section views • Practice drawing, sketching • Computer model HW due today
description
Class 10_1. Section views Practice drawing, sketching Computer model HW due today. Questions about DP?. Engineering models!. Not easy, but you get better with practice. Essential to true engineering design. I hope you are starting to get a feel for how it is done. - PowerPoint PPT Presentation
Transcript of Class 10_1
Class 10_1
• Section views• Practice drawing, sketching• Computer model HW due today
Questions about DP?
Engineering models!Not easy, but you get better with practice.Essential to true engineering design.I hope you are starting to get a feel for how it is done.Don’t get discouraged, keep practicing.
Next stage: build and test prototype
The lab (CAMP 148) is open.
Advice from previous students: “Leave lots of time for testing!”
Review
• Introduction to the nature and purpose of technical drawings
Typical “projections”
• Orthographic projection (the fundamental engineering drawing)
• Isometric projection (a pictorial view)• Oblique projection (another pictorial view)
Stages in making a sketch
• Block-out the outline with “construction lines”• Block-out the major features• Refine shapes• Darken part lines
• Tips: Use construction lines liberally, draw big (use entire page), pay attention to proportions, relax and practice.
Lines
Line types (e.g., part, hidden, center)Line values (e.g., thick, intermediate,
construction)
It is important to use the proper line type and line value in your drawings. It communicates important information and makes drawings easier to understand.
Example of lines
Section views
• Section views “cut-away” part of the object so that internal details can be revealed.
Section views
• Section view are also used to show assembly details
Section view conventions
• Cut surface is filled with a “hatch”• Part lines behind cutting plane are shown• Hidden lines behind cutting plane are
generally not shown• Section view can take the place of one
orthogonal view or can be auxiliary views
Section view types
• Many section view types. A few examples…
Review: section view conventions
• Cut surface is filled with a “hatch”• Part lines behind cutting plane are shown• Hidden lines behind cutting plane are
generally not shown• Section view can take the place of one
orthogonal view or can be auxiliary views
Drawing practice
• Freehand sketches• Draw two views of the object, one of which
is a full section view• Remember: block out the entire drawing
using construction lines, pay attention to proportions, use proper section view conventions
