) Spts Consider the following drawini s feature is diuadrawing The perpendicular
ID: 1766872 • Letter: #
Question
) Spts Consider the following drawini s feature is diuadrawing The perpendicularity tolerance of eature B is alway 6.5 6.2 52.0 51.8 19010 A Circle one: Need more information to answer Yes No d) 5 pts A hole, 015 ±0.21 mm, is supposed to be made 5 inches from datum B and 3 inches from drilling it, it measured 4.90 mm, and was located 4.95 inches from datum Band 3 datum C. The hole location specification calls for a tolerance of location of 20.4 mm a datum C Ate at maximun material condition. 1. Is the hole within diameter tolerance? Justify briefly. 2. Is the hole within location tolerance? Justify briefly.Explanation / Answer
c) The perpendicularity tolerance of 0.1mm is defined at max material condition (MMC). This means that, this tolerance is applicable when the feature is at MMC i.e., when B is 52.0mm
Answer: NO
d)
1) The tolerance for the hole is 5 ± 0.2, i.e. the size must be between 4.80mm to 5.20mm
As the Produced hole size = 4.90 mm, which is within the range for diametric tolerance
2) MMC for hole = 5 – 0.2 = 4.80 mm
Produced hole size = 4.90 mm
Positional tolerance given = 0.4mm
Bonus tolerance available = Produced hole size - MMC
= 4.9 – 4.8 = 0.1mm
Therefore total tolerance available (t)= Bonus + Positional tolerance given
t = 0.1 + 0.4 = 0.5mm
Deviation from B (B) = 5 - 4.95 = 0.05mm
Deviation from C (C) = 3 – 3.15 = 0.15mm
As both these values are less than 0.5mm, the hole is within positional tolerance
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