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Dimensions and Tolerance - Coggle Diagram
Dimensions and Tolerance
Types of Dimension
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3.Chained Dimensioning
Should only be used if the function of the object would not be affected by the accumulation of the tolerance
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- Dimensioning of circle arc and holes
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Rules of Dimensioning
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Dimension lines, extension lines and object outlines should not cross or overlap
Types of Tolerance
1.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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Calculating Tolerance
Tolerance is defined as the difference between the upper limit of a dimension and the lower limit of the dimension. Its formula is given by:
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Interference Fit
would be difficult to move (or remove) the two interfacing parts. Usually, a lot of force is needed to remove the two parts
Clearance Fit
would still be an allowance for two parts to move, such as in a door hinge