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Lesson 06 - Coggle Diagram
Lesson 06
Dimension
Dimension Text
This is the base dimension. Usually the units (in mm) are not indicated on every dimension text, but at the bottom corner of the drawing.
Nine types of Dimensions
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Dimensioning of Circle, Arc, and Hole
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Rules of Dimensioning
Dimensions should not be duplicated, i.e. same dimension should not be repeated on different views, or the same information need not be given in two different ways
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Dimension lines, extension lines and object outlines should not cross or overlap
Tolerances
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Types of Tolerance
Bilateral Tolerance
allowed to vary in two directions from the specified dimension. Both directions need not vary by the same amount.
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Assembly Modelling
multiple parts are brought together to define a larger, more complex product representation.
Assembly modelling facilitates the collaboration among designers, engineers, manufacturing technicians and others to ensure a product assembly works