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LESSON 6 - Coggle Diagram
LESSON 6
TYPES OF DIMENSIONING
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DIMENSIONING OF CIRCLE, ARC, AND HOLE
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IMPORTANCE OF TOLERANCE
- The range of tolerance will translate into the manufacturing method needed, since different manufacturing method has different degree of tolerance
- Same parts can be made from different companies and they have to be interchangeable. Tolerance ensures good quality control for parts from different companies
- If tolerance is not given, exact measurement of the parts must be made. Rejection rate will be very high and not realistic
- Tolerance will ensure that mating parts of an assembly interface and fit well
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INTERFERENCE FIT
difficult to move/remove the two interfacing parts. A lot of force is needed to remove the two parts. Examples are shafts that are fitted through bearings, so that shaft does not slip.
CLEARANCE FIT
have allowance for two parts to move, such as in a door hinge
REVOLUTE JOINT: has a single rotational degree of freedom, much like a hinge
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