12dDimensioning_Rules_Overview

12dDimensioning_Rule - rectangle and include a diameter symbol c Holes are circular cutouts WITHIN a figure i Holes are dimensioned in the view

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1. Identify Features a. Holes b. Cylinders c. Cutouts d. Imagine you are a machinist that must make cuts from a solid rectangular block. What cuts are you going to make? Where will you make these cuts? 2. Place Overall Dimensions a. Width, height, and depth b. Do not show more than one of each. There should be 3 dimensions on your paper after this step. 3. Place Dimensions of Each Feature Separately a. Work feature by feature , identifying the size and location by placing dimensions 4. Cylinders and Holes a. These features must be identified separately and dimensioned differently b. Cylinders have a circular OUTSIDE surface i. Cylinders are dimensioned in the view where they appear as a
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Unformatted text preview: rectangle and include a diameter symbol c. Holes are circular cutouts WITHIN a figure i. Holes are dimensioned in the view where they appear as a circle and include a diameter symbol 5. True Size/True Shape a. Features are dimensioned in the view which best describes the feature 6. Avoid Overdimensioning a. Place the minimum number of dimensions necessary to fully define all features 7. Rules of Thumb a. Place dimensions between figures UNLESS this will create long extension lines through the object b. Always place dimensions outside of a view c. Don’t forget to add centermarks/centerlines d. Do NOT dimension to hidden or centerlines...
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This note was uploaded on 05/21/2011 for the course CEE 1770 taught by Professor Staff during the Summer '08 term at Georgia Institute of Technology.

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12dDimensioning_Rule - rectangle and include a diameter symbol c Holes are circular cutouts WITHIN a figure i Holes are dimensioned in the view

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