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dimensions, tolerances and assemblies - Coggle Diagram
dimensions, tolerances and assemblies
dimensions
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3.Chain dimensioning
Should only be used if the function of the object would not be affected by the accumulation of the tolerances.
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8.dimensioning of arc, circle and hole
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9.dimensioning angles
It is marked with a curved dimension line,
and has the degree ° symbol
tolerances
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types of tolerance
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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types of fit
Clearance Fit
an allowance for two parts to move, such as in a door hinge.
Interference Fit
the minimum shaft diameter is 49.8, which is larger than the maximum hole diameter of 49.5. Hence, this would be an interference fit.
it would be difficult to move (or remove) the two interfacing parts. Usually, a lot of force is needed to remove the two parts
Examples are shafts that are fitted through bearings, so that the shaft does not slip.
types of joints
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Revolute Joint: Has a single rotational degree of freedom, much like a hinge.
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