Inst charbel seif mech 220 010513 7 mech 220 7th

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Unformatted text preview: 7 Mech 220: 7th LECTURE Mech DIMENSIONING DIMENSIONING drawing dimensioning schemes- (1) chain dimensioning drawing Principal dis-advantages: Appears crowded when small features are used. Possible remedies: x It is typical to place an overall dimension above a chained dimension Inst. Charbel Seif , Mech 220 01/05/13 8 Mech 220: 7th LECTURE Mech DIMENSIONING DIMENSIONING drawing dimensioning schemes- (2) parallel dimensioning parallel dimensioning x x Each dimension stands alone, not relying on any other dimension. The inner most dimension is first placed and the other dimensions are staggered starting from the inside and working outward. Inst. Charbel Seif , Mech 220 01/05/13 9 Mech 220: 7th LECTURE Mech DIMENSIONING DIMENSIONING drawing dimensioning schemes- (2) parallel dimensioning Drafting Tip: For clarity, Do NOT stack dimensions symmetrically but rather USE staggered dimensions Inst. Charbel Seif , Mech 220 01/05/13 1 Mech 220: 7th LECTURE Mech DIMENSIONING DIMENSIONING drawing dimensioning schemes- (2) parallel dimensioning parallel dimensioning Principal advantage: Inst. Charbel Seif , Mech 220 Simple since each dimension is indepe...
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