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9b- Geometric Dimension Ing & Tolerancing (Part2) | Engineering Tolerance | Engineering

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Geometric dimensioning & tolerancing (Part 2) KCEC 1101 Tolerances ã Geometric tolerances are controls that effect the shape and/or orientation of features. ã Tolerance is the total amount a dimension may vary and is the difference between the maximum and minimum limits. ã Tolerances are assigned to mating parts. For example, the slot in the part must accommodate another part. A system is two or more mating parts. One of the great advantages of using tolerances is that it allows for interchang
  Geometric dimensioning &eometric dimensioning &tolerancingolerancing(Part 2)Part 2) KCEC 1101  Tolerancesolerances ã Geometric tolerances are controls that effect theshape and/or orientation of features.ã Tolerance is the total amount a dimension may varyand is the difference between the maximum andminimum limits.ãTolerances are assignedto mating parts. Forexample, the slot in thepart must accommodateanother part. A system istwo or more mating parts.One of the great advantages of usingtolerances is that it allows for interchangeable parts, thus permitting thereplacement of individualparts.  ãFor example, Atolerance of 4.650 ±0.003 means that upper limit (largest value) for part is4.653, the lower limit (smallest value) is4.647, and thetolerance is 0.006  Tolerances are expressed as:olerances are expressed as: 1.Direct limits, or as tolerance valuesapplied directly to a dimension2.Geometric tolerance3.Notes referring to specific conditions4.A general tolerance note in the titleblock
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