rock shoes

8/10/2019 Rock Shoes

1/22

Cutting

Assumptions

Die Change time 4

Batch Size 100

Number of components 1200

components / machine 400

Run in Parallel

!P 1

Cut Shoe Leather

Die Change time 11"2#

Stamp time 0"1

Process $ime %minutes& '#

!(le $ime 0

Cut Linings

Die Change time )

Stamp time 0"0'

Process $ime %minutes& *'

!(le $ime 1+

Cut Insoles

Die Change time '

Stamp time 0"0*

Process $ime %minutes& #*

!(le $ime 2)

Capacit, %batches& #"*#

Capacit, %pairs& #*4"+1

C,cle time %minutes& '#

-ea( time '#

Cutting Process time '# .

!P 2

Whole System

$otal !P 40"*4

-$ C$ !P ')40!n ours 14)


2/22

!n Da,s *"21

Sole for an optimum batch size

Cutting is limite( b, Stitching

4%11"2# 3 0"1& 2"2 minimum batch size


3/22

Kitting

Assumptions

20 minutes for 100 7its

!P 1

8itting Process time 20 .

!P *

S,stem capacit, is limite( b, the c,cle time of stit!t 6oul( be ph,sicall, impossible for the pro(uct to


4/22

that a5ects cutting capacit, but (oes not a5ect th


5/22

Stitching

Assumptions

Pre;t or7ers 4

rnament or7ers 2

Run !n parallel

!P 1'

Preft

Run $ime / Pair '"'

Pair/or7er 2"2

Process $ime 220

Join

Run $ime / Pair *

Pair/or7er 2

Process $ime 200

!(le time

Ornament

Run $ime / Pair #"=

Pair/or7er 2"*#

Process $ime 2*#

!(le $ime

Capacit, %batches& 2"1'

Capacit, %pairs& 21'"1'

C,cle time %minutes& 220

-ea( time =)*0

Stitching Process $ime 220 .

!P *

hing" 9er, (epartment cannot run at their maiu:o6 at (i5erent %aerage& rates"


6/22

6hole s,stem


7/22

Steaming

Assumptions

9nough Space for all

!P 1"*4

Steaming $ime =*0 .

!P 4

m spee(" e must loo7 at the s,stem as a 6hole


8/22


9/22

-asting

Assumptions

Run in Succession

!P 1

1& Staple !nsoles 1"2

2& $oe an( heel seat lasts 1

=&Rough sole? poun( 1"#

4& Cement sole? pull last 1"=

#& !nspect? pac7 0"+

=0

Capacit, %batches& 4"#=

Capacit, %pairs& 4#2"'=

C,cle time %minutes& 1"#

-ea( time 10*

$hroughput $ime


10/22


11/22

Cutting

Assumptions

Die Change time 4

Batch Size 2#

Number of components =00

components / machine 100

Run in Parallel

!P 1

@achine Number =

Cut Shoe Leather

Die Change time 11"2#

Stamp time 0"1

Process $ime %minutes& ##

!(le $ime 0

Cut Linings

Die Change time )

Stamp time 0"0'

Process $ime %minutes& 44

!(le $ime 11

Cut Insoles

Die Change time '

Stamp time 0"0*

Process $ime %minutes& ='

!(le $ime 1+

Capacit, %batches& '"+=


C,cle time %minutes& ##

-ea( time ##

Cutting Process time ## .

!P 2

Whole System

$otal !P 40"*4

-$ C$ !P 22=#!n ours =+"2#


12/22

!n Da,s 1"##

Sole for an optimum batch size

Cutting is limite( b, Stitching

4%11"2# 3 0"1& 2"2 minimum batch size

2#


13/22

Kitting

Assumptions

20 minutes for 100 7its

!P 1

8itting Process time 20 .

!P *

S,stem capacit, is limite( b, the c,cle time of stit!t 6oul( be ph,sicall, impossible for the pro(uct to


14/22

that a5ects cutting capacit, but (oes not a5ect th


15/22

Stitching

Assumptions

Pre;t or7ers 4

rnament or7ers 2

Run !n parallel

!P 1'

Preft

Run $ime / Pair '"'

Pair/or7er 2"2

Process $ime ##

Join

Run $ime / Pair *

Pair/or7er 2

Process $ime #0

!(le time

Ornament

Run $ime / Pair 4"2

Pair/or7er 2"1

Process $ime #2"#

!(le $ime

Capacit, %batches& '"+=


C,cle time %minutes& ##

-ea( time ))0

Stitching Process $ime ## .

!P *

hing" 9er, (epartment cannot run at their maiu:o6 at (i5erent %aerage& rates"


16/22

6hole s,stem


17/22

Steaming

Assumptions

9nough Space for all

!P 1"*4

Steaming $ime =*0 .

!P 4

m spee(" e must loo7 at the s,stem as a 6hole


18/22


19/22

-asting

Assumptions

Run in Succession

!P 1

1& Staple !nsoles 1"2

2& $oe an( heel seat lasts 1

=&Rough sole? poun( 1"#

4& Cement sole? pull last 1"=

#& !nspect? pac7 0"+

Capacit, %batches& 1*"##

Capacit, %pairs& 41="+)

C,cle time %minutes& 1"#

-ea( time 2) lea( time %n3*&

$hroughput $ime


20/22


21/22

n batch


22/22

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