Dimension, Tolerances and Assemblies

Dimension

Parallel Dimensioning

Superimposed Running Dimensioning

Chain Dimensioning

Combined Dimensioning

Dimensioning Small Features

Dimensioning of Multiple Features

Dimensioning of Radius

Dimensioning of Arc, Circle and Hole

Dimensioning Angles

Tolerances

Bilateral Tolerance

Unilateral Tolerance

Limit Tolerance

allowed to vary in two directions from the specified dimension. Both directions need not vary by the same amount.

allowed to vary in only one direction

the upper and lower limits of the dimension are specified

Assemblies

Clearance Fit

Interference Fit

Object is able to fit thru another object with space remaining

Object fit thru with another object with no space remaining

Assembly Modelling

Rigid Joint

Revolute Joint

Fixes two components to one another; it provides no degrees of freedom.

Has a single rotational degree of freedom, much like a hinge.