Inst charbel seif mech 220 010513 1 mech 220 7th

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Unformatted text preview: IONING drawing dimensioning schemes- (4) ordinate dimensioning drawing Ordinate dimensioning Principal advantages: 1) 2) Saves space by using only one (1) extension line per dimension. Eliminates tolerance stack-up Principal dis-advantage: Potential crowding around fine features Inst. Charbel Seif , Mech 220 01/05/13 19 Mech 220: 7th LECTURE Mech DIMENSIONING DIMENSIONING drawing dimensioning schemes- (4) ordinate dimensioning drawing Principal dis-advantage: Potential crowding around fine features Drafting tip: use angled extension lines Inst. Charbel Seif , Mech 220 Drafting tip: Stagger dimensions 01/05/13 2 Mech 220: 7th LECTURE Mech DIMENSIONING DIMENSIONING drawing dimensioning schemes- (5) tabulated dimensions (5) drawing x x x x Is a basic use of the ordinate system. Each Feature is given a symbol that us an alphanumeric code. An origin of the drawing is established. Table or a chart is drawn showing the coordinate of the feature and its dimensions. Inst. Charbel Seif , Mech 220 01/05/13 2 Mech 220: 7th LECTURE Mech DIMENSIONING DIMENSIONING drawing dimensioning schemes- (5) tabulated dimensions (5) drawing Principal advantages: 1) 2) Saves space Eliminates tolerance stackup Principal dis-advantages: (1) Inst. Charbel Seif , Mech 220 01/05/13 Constantly moving attention from view to dimension table. 2 Mech 220: 7th LECTURE M...
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