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DImension, Tolerance & Assemblies - Coggle Diagram
DImension, Tolerance & Assemblies
Dimension
It is important to provide accurate dimension
Types of Dimensions
parallel dimension
dimensioning of radius
superimposed running dimension
chain dimension
dimensioning small features
combined dimensioning
dimensioning of multiple features
dimensioning of circles, arc and hole
dimensioning angles
dimensions should not duplicated
avoid dimensioning to hidden lines and features
all lines should not overlap
Tolerance
tolerances are included with dimension in engineering drawings
types of tolerance
bilateral
vary in two directions from specified dimension. Both directions need not vary by same amount
unilateral
vary in only one direction
limit
upper and lower limits of dimension are specified
Assemblies
assembly parts brought together to define larger and more complex product
types of assemblies
rigid
revolute
slider
cylindrical
pin slot
planar
ball