DFMAppli.pdf
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1 DFM Application to Sheet-metal Working ABSTRACT 1. Sheet-metal working ○ ○ ○ ○ 1.1 Blanking and piercing
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1
DFM Application to Sheet-metal Working
ABSTRACT
1. Sheet-metal working
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1.1 Blanking and piercing
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1.2 Bending
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1.3 Drawing
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2. DFM application in sheet-metal working
2.1 DFM technique
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2.2 DFM application in blanking operation
2.2.1 Design for individual dies
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2.2.2 Cost estimation of individual dies for blanking operation
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uds AC 36.0120 +=
=dsC
=u A2cm
p X
)(2 LW P X p =
= P
=W L,
d h
2)/lg(5.29 VhU U h msd ×+=
=U
=msU
=V
=h
d f
d d h f 02.05.0 +=
75.0=d f
p M
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powd p M f f M 1=
= po M
=w f 1
=d f
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2.2.3 Some design considerations
2.3 DFM application in piercing operation
2.3.1 Cost estimation of individual dies for piercing operation
LW M po 03.023+=
=W L,
p p pc N P M 36.08 ++=
= p P
= p N
d p ps N KN M 4.0+=
= K
=d N
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2.3.2 Some design considerations
2.4 DFM application in bending operation
2.4.1 Cost estimation of individual dies for bending operation
)02.09.0()023.018( D LW M po +×+=
=W L,
= D
bb pn N L M 8.568.0 +=
=b L
=b N
2.4.2 Some design considerations
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2.5 DFM application in estimating cost and cycle time of each part
sUhl f 5.0=
=h
= sl
)(0333.0 21
2 r r LUh f b +=
=h
=b L
=1r
=2r
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)(11.08.3 W Lt ++=
=W L,
t t ×=
667.01
( ) ( ) 100360036003600 ××+×+×= bd bd p pbk bk p C t C t C t C
=bk t
= pt
=bd t
=bk C
= pC
=bd C
2.6 Some design considerations in drawing operation
3. A conceptual DFM computer aided tool
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4. Summary
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Appendix
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REFERRACES
