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DIMENSIONS,TOLERANCES AND ASSEMBLIES - Coggle Diagram
DIMENSIONS,TOLERANCES AND ASSEMBLIES
TYPES OF DIMENSIONS
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FOR RADIUS, LABEL WITH CAPITAL R.
CIRCLE, ARC AND HOLE - BY DIAMETER, RADIUS AND CENTER LINES RESPECTIVELY
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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
IMPORTANCE OF TOLERANCE
Tolerances are included with dimensions in engineering drawings to take into account these manufacturing limitations.
If tolerance is not given, exact measurement of the parts must be made. Rejection rate will be very high and is not realistic.
The range of tolerance will translate into the manufacturing method needed, since different manufacturing method has different degree of tolerance.
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ASSEMBLY MODELLING
Multiple parts are brought together to define a larger, more complex product representation.
TYPES OF JOINTS
RIGID, REVOLUTE, SLIDIER, CYLINDRICAL, PIN SLOT, PLANAR, BALL