Question

Machine Design

(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.

3) 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.

iv. Must be perfectly perpendicular; 0.

iii. Controlled by the size tolerance; 0.3.

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 the0.2 cylindrical tolerance zone.


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