lecture8 - Inst.Charbel Seif, Mech 220 02/07/11 Mech 220...

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Unformatted text preview: Inst.Charbel Seif, Mech 220 02/07/11 Mech 220 Mech 220 Intro to Engineering CAD Intro to Engineering CAD FALL 2006-07 Inst.: Charbel Seif Office: Wing B - B-303 Extension: 3629 e-mail: cs05@aub.edu.lb MECHANICAL DRAWINGS: MECHANICAL DRAWINGS: DIMENSIONING & TOLERANCING DIMENSIONING & TOLERANCING 3/3 3/3 Inst.Charbel Seif, Mech 220 02/07/11 Mech 220: 7th LECTURE Mech 220: 7th LECTURE DIMENSIONING: DIMENSIONING: dimensioning a drawing- dimensioning a drawing- shape & size shape & size dimensioning dimensioning DIMENSIONING A DRAWING: shape & size dimensioning Inst.Charbel Seif, Mech 220 02/07/11 Mech 220: 7th LECTURE Mech 220: 7th LECTURE DIMENSIONING DIMENSIONING dimensioning a drawing- dimensioning a drawing- shape & size shape & size dimensioning dimensioning Dimensioning spheres Dimensioning cones Dimensioning arc radius One factor is to be considered whether to use radius versus diameter dimensioning The Tolerance Cone or a tapered edge may be dimensioned with a note and a leader line A center tick mark is used for circles having a radius larger than 0.125 Inst.Charbel Seif, Mech 220 02/07/11 Mech 220: 7th LECTURE Mech 220: 7th LECTURE DIMENSIONING DIMENSIONING dimensioning a drawing- dimensioning a drawing- shape & size shape & size dimensioning dimensioning Dimensioning irregular curves The best methods used are the datum/baseline system or the tabulated system. Both methods set up a reference points or surfaces and supply the X and Y coordinates for each point or surface Inst.Charbel Seif, Mech 220 02/07/11 Mech 220: 7th LECTURE Mech 220: 7th LECTURE DIMENSIONING DIMENSIONING dimensioning a drawing- dimensioning a drawing- shape & size shape & size dimensioning dimensioning Dimensioning counterbores To Dimension counterbores, you must always dimension to visible lines....
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lecture8 - Inst.Charbel Seif, Mech 220 02/07/11 Mech 220...

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