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Mechanical Engineering Technology

MEC 1011 Fall ‘05

Assignments

MEC 1011 - Design Communication I
Assignment 7
Special Views and Sculpted Forms

Due at the end of our ‘Lecture’ meeting in Week 5

Concept Sketch:

Sketch the design of a part or assembly that will call for the use of various special views on the working drawing(s) including: section (p. 146, 492) auxiliary (p. 148, 490) detail, and broken. Also, include some sculpted form. If you can accomplish all that with one part, that’s fine. Sketch freehand on plain 8 x 11 paper using any combination of orthographic or isometric views. Include a title at the top, some reference to size, material, how it will work (purpose may be ridiculous) and how it will be made. Include your name, signature and the date.

Artist’s Rendering:

Take a crack at drawing what the design would look like in its environment. Use tone (shading) in place of line to avoid abstraction. Include shadows. Use pencil on plain 8 x 11 paper.

Working Drawing(s):

Use Autodesk Inventor to produce a complete set of working drawings (parts and assemblies as necessary) for your design. Include all views necessary for clarity (consider isometric). Further:

        Include a multi-sheet drawing.

        Fully dimension* (p. 139, 500 and see rules in Figure 12.48), but do not over dimension (reference dimensions are welcome).

        Tolerance (remember angles and centerlines) including bilateral, unilateral, limit, decimal place (p. 514-516), geometric (p. 524) and surface finish control (p. 540).

        Use A-size sheets, standard title block (with drawing scale, etc.) and border, and add all pertinent notes (like material and don’t forget visual inspection if applicable).

        Plot all drawings 1:1.

*presuming that there’s a sculpted form somewhere in your design, that portion will not be dimensionable. Instead, use a leader to reference your computer model by name and location (see Fig 6.8). Dimension all dimensionable geometry.

Computer Rendering:

Use Autodesk Inventor to produce a rendered image of your design (save as .jpg in workspace folder). You are welcome but not required to present the design in its environment.

Advice:

1.      Keep it simple!

2.      A spline revolved about an axis produces a quick sculpted feature.