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Engineering Design Lesson 6 - Coggle Diagram
Engineering Design Lesson 6
Dimensions
Parallel dimensioning
several dimensions originating from a common reference surface
Superimposed Running Dimensioning
Simplifies parallel dimensions in order to reduce the space used on a drawing
Combined Dimensioning
Uses both chain and parallel dimensioning
Chain Dimensioining
used only if the function of the object would not be affected by the accumulation of the tolerances
Dimensioning Small Features
Dimensioning of multiple feautures
Dimensioning of radius
Dimensioning of circle,arc and hole
Dimensioning angles
Tolerance
Bilateral Tolerance
Allowed to vary in two directions from the specified dimension
Unilateral Tolerance
Allowed to vary in only one direction
Limit Tolerance
The upper and lower limits of the dimensions are specified
Joints
Rigid Joint
Fixed two components to one another
Revolute Joint
Has a single rotational degree of freedom