057:021 Design for Manufacturing Spring 2013

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Assignment II

Due: Wednesday, February 20 Total: 100% +30% (EC)

1. Review Problem 3.1 from your text book (Chang, Chapter 3) (30%)

(For the part shown in Fig. 3.28, determine the maximum and minimum value of dimension labeled

X.)

Fig. 3.28

2. Given the figure below (30%),

a. Calculate and draw the sizes and shape of each hole center tolerance zone for Figure (a)

and Figure (b) when the produced hole size is:

i. LMC

ii. 0.500’’

b. After the part shown in Figure (b) is manufactured, the distance between the center of the

hole and the datum plane A is measured to be 1.998” and the distance between the center and

the datum plane B is measured to be 2.003”. The actual (manufactured) diameter of the hole

is 0.499”. Is the manufactured part acceptable, why?

057:021 Design for Manufacturing Spring 2013

2 | P a g e P r o f . O z b o l a t

3. Group Assignment Given the big wheel vehicle model, create a solid model using Rhinoceros

CAD software package. Feel free to assign your own dimensions and try to approximate the given

shape as much as you can. Only one submission per group is allowed, a group representative should

use ICON dropbox to upload your electronic files (in Rhino part file format (*.3dm)). 70%

Note: You should also create axle rods to assemble front and rear wheels.

057:021 Design for Manufacturing Spring 2013

3 | P a g e P r o f . O z b o l a t