Principles and Practice of Manufacturing Processes
ME 300363

Fall 2010
ME363 HW6
Fall 2011
Name
Due: 12/06/11
1. What is the force required to punch a square hole, 150 mm on each side, from a 1mm thick 1008
steel sheet using flat dies (use the table on the back side)?
2. Estimate the minimum percent scrap possible in produc
Principles and Practice of Manufacturing Processes
ME 300363

Fall 2010
ME363
HW3
Due: 9/28/2011
1.
Calculate the expected main cutting force in an orthogonal machining operation where the
shear stress is 35,000 psi (241 MPa). The rake angle is +10o, the feed is 0.015 inch (0.381
mm) and the depth of cut is 0.100 inch (25.4 m
Principles and Practice of Manufacturing Processes
ME 300363

Fall 2010
ME 363 Homework No. 1
Name
Due: 9/8/2011
1.
Ten samples of size n=4 have been collected from a process and the dimension of interest
has been measured for each part as shown below:
S
1
9.22
0.24
x
R
2
9.15
0.17
3
9.2
0.3
4
9.28
0.26
5
9.19
0.27
6
9.12
0.1
Principles and Practice of Manufacturing Processes
ME 300363

Fall 2010
LAB. #3, MACHINING EXPERIMENT I STRAIGHT AND FACE TURNING Purpose: To study methods for setting up and operating a lathe, and the use of measuring instruments to produce accurate workpiece dimensions. Machine: Engine lathe Tools: 6 inch dial caliper, stee
Principles and Practice of Manufacturing Processes
ME 300363

Fall 2010
ME363 HW7
1.
Fall 2011
No due date
The tensile strength of a part produced by powder metallurgy can be empirically related to
porosity as follows:
UTS = UTS0e nP
where P is the volume fraction of pores in solid, UTS0 is the tensile strength at zero porosi
Principles and Practice of Manufacturing Processes
ME 300363

Fall 2010
ME 363
1.
Homework #6
= 4 150
= 600
max = 0.7 ( UTS) t
= 0.7 320 1 600
= 134, 400 N
Solutions
2.
Consider an infinite strip, then you can calculate
the scrap by considering the half of the strip width
with blanks laid out with the clearance between them