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MECHANICAL DESIGN ENGINEERING – Geometrical Dimensioning and Tolerancing_What is the SYMMETRY tolerance?
Among the 14 used GD & T symbols in the category of Location Tolerances there are 3 types. 1. The Position Tolerance 2. The Concentricity Tolerance 3. The Symmetry Tolerance From these 3 tolerance types, only the Position Tolerance is often used as it is also easy to measure. The other 2 are in general … More
MECHANICAL DESIGN ENGINEERING – Geometrical Dimensioning and Tolerancing_What is the CONCENTRICITY tolerance?
The functionality of a part in an assembly is usually well defined by the 4 form tolerances (straigthness, flatness, circularity and cylindricity) and among the orientation tolerances by the 3 most frequent ones: the position, the perpendicularity and the parallelism tolerance. Yet we have 14 different types of tolerances in total, which can be anytime … More
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Computer Aided Design & The 118 Elements 