For the part shown, answer the following questions with regard to the cylindrical boss. (a) What are

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For the part shown, answer the following questions with regard to the cylindrical boss.

(a) What are the maximum and minimum diameters allowed for the boss?

(b) What is the effect of the position tolerance of 0.2 on the diameters specified in part (a)?

(c) The position control defines a tolerance zone. Specifically what must stay within that tolerance zone?

(d) What is the diameter of the tolerance zone if the boss is produced with a diameter of 50.3?

(e) What is the diameter of the tolerance zone if the boss is produced with a diameter of 49.7?

(f) Describe the significance of the datum references to the determination of the position tolerance zone.


(g) What is the perpendicularity tolerance with respect to datum A? (Select one.)

i. Not defined.

ii. Controlled by the position tolerance; 0.2 at MMC to 0.5 at LMC.

iii. Controlled by the size tolerance; 0.3.

iv. Must be perfectly perpendicular; 0.


(h) What controls the cylindricity? (Select one.)

i. There is no control on the cylindricity.

ii. From Rule #1, the envelope of a perfect cylinder with diameter of 50.

iii. From Rule #1, the envelope of a perfect cylinder with diameter of 50.3.

iv. From the position control, the center axis of each cross section must be within the 0.2 cylindrical tolerance zone.

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Shigley's Mechanical Engineering Design

ISBN: 9780073398204

10th Edition

Authors: Richard Budynas, Keith Nisbett

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