Marvin work for Course unit 2020/2021 PDF

Title	Marvin work for Course unit 2020/2021
Author	Marvin Rwabwera
Course	management of Engineering
Institution	Makerere University
Pages	1
File Size	62.1 KB
File Type	PDF
Total Downloads	46
Total Views	133

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PARALLEL (PROGRESSIVE) DIMENSIONING; ● When number of dimensions are measured in the same direction from a common feature ie surface of the part, then the method of indicating all the dimensions from the same feature is called parallel dimensioning. The dimension lines are parallel to each other and equally spaced. ● All dimensions are shown from a common reference line. Obviously, all these dimensions share a common extension line. This method is adopted when dimensions have to be established from a particular datum surface.

CHAIN (CONTINUOUS) DIMENSIONING; ● Chain dimensioning is when each single dimension is placed currently adjacent to the next dimension without any gap between the dimensions line. This method should only be used if tolerance accumulation is not going to affect the function of part. ● All the dimensions are aligned in such a way that an arrow head of one dimension touches tip-to-tip the arrow head of the adjacent dimension. The overall dimension is placed outside the other smaller dimensions....