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Dimension, Tolerances and Assemblies - Coggle Diagram
Dimension, Tolerances and Assemblies
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
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Assemblies
In an assembly model, multiple parts are brought together to define a larger, more complex product representation.
Constructing an assembly normally begins with bringing in a base component, selected because of its central role. Each component brought in needs to be oriented and located relative to other components in the assembly. Assembly joints are used between elements of components.
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Tolerances
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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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Tolerances are included with dimensions in engineering drawings to take into account these manufacturing limitations.
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