DFMA as Applied to the Swingline 747 Desktop ... - University of Utah
DFMA as Applied to the Swingline 747 Desktop ... - University of Utah
DFMA as Applied to the Swingline 747 Desktop ... - University of Utah
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Fbendung = 1.92 KN<br />
<strong>DFMA</strong> <strong>as</strong> <strong>Applied</strong> <strong>to</strong> <strong>the</strong> <strong>Swingline</strong> ® <strong>747</strong> Desk<strong>to</strong>p Stapler<br />
So,<br />
Total force required = Fblanking + Fpunching + Fembossing + Fbendung<br />
= 60 KN<br />
From Table 9.3<br />
The space required for 4 die stations is,<br />
4*14.6 = 58.4<br />
From Table 9.8<br />
Appropriate press for 58.4 is 500 KN press force, $76/hr operating cost and<br />
speed <strong>of</strong> 90 strokes/min.<br />
The estimated cycle time per part is,<br />
t = 60/90 =0.67 sec<br />
Processing cost per part is<br />
Cp = (0.67/3600)*76*100 = 1.4 cents.<br />
2.4aiii For <strong>the</strong> remaining parts, <strong>the</strong> analysis is abbreviated:<br />
Staple slide:<br />
Cost for progressive die = $9120<br />
Cycle time = 0.6 sec<br />
Processing cost per part = Cp = 0.91 cents<br />
Redesigned staple slide:<br />
Anvil:<br />
Cost for progressive die = $8500.00<br />
Cycle time = 0.6 sec<br />
Processing cost per part = Cp = 0.91 cents<br />
Cost for progressive die = $7590<br />
Cycle time = 0.6 sec<br />
Processing cost per part = Cp = 0.91 cents<br />
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