BEG – WEEK 2 SESSION 1 Dimensioning

 BEG – WEEK 2 SESSION 1

STUDY MATERIALS

Syllabus

ü  1. Demonstrate the dimensioning and its necessity, methods, and principles,

ü  2. Sheet no.2  Dimensioning of overall sizes, circles, threaded holes, chamfered surfaces, angles, tapered surfaces, holes, equally spaced on P.C.D., countersunk holes, counterbored holes, cylindrical parts, narrow spaces and gaps, radii, curves, and arches.

https://anchor.fm/s.deivanai/episodes/Dimension-e1c1vcs

Dimensioning

Principles of Dimensioning

The following are the basic principles of dimensioning:

1. All dimensional information necessary to define a part clearly and completely shall be shown directly on a drawing.

2. Each feature shall be dimensioned once only on a drawing.

3. Dimensions shall be placed on the view or section that shows clearly, the corresponding features

4. As far as possible, on a drawing, dimensions should be expressed in one unit only, preferably in millimeters, without showing the unit symbol (mm). Unit on the drawing, however, may be shown in a note

5. No more dimensions than are necessary to define a part shall be shown on the drawing. No feature of a part shall be defined by more than one dimension in any one direction

 

https://youtu.be/HNlsbYi_Uvc