1. Backward Analysis, Route Sheet, MPPC

2. Operation Description
Route Sheet
Company: ARC Inc.
Produce: Air Flow Regulator
Part: Plunger Housing
Part No
Prepared by: JSU
Part No. 6/6/03
Oper. No.
Operation Description
Machine
Type
Tooling
Setup
(hr.)
Oper. Time (hr.)
Mtls.
Parts
0104
Shape, drill, cut off
Auto sc. Machine
.5 in dia coller, cir. Form tool, .45” diam center drill 5
0.0057
Alum
1”x12’
0204
Machine Slot and thread
Chucker
0.045” slot saw, turret slot
2.25
0.0067
0304
Drill 8 holes
Auto dr. unit
0.078” diam twist drill
1.25
0.0038
0404
Debur and Blow out
Drill press
Deburring tool with pilot
0.5
0.0031
SA 1
Enclose subassembly
Dennison hydraulic press
None
0.25
0.0100

3. Routing sheet

4. Analog model of the assembly process.
2200
Assembly Chart
3254
Analog model of the assembly process.
Circles denote components
Links denote operations/subassemblies
Squares represent inspections operation
Begin with the original product and to trace the product disassembly back to its basic components.
3253
3252
3251
SA-1
A-1
3250
3255
A-2
4150
4250
A-3
I-1
1050
A-4
Pack

5. Production Requirements – Yield Loss
Pi – Production input to operation i
si – Fraction of Pi lost (scrap)
Oi – output of process i Pi i Oi
Pisi

6. Production Requirements – Series Systems1 2
. . . P1 n On
P1s1
P2s2
Pnsn

7. Example
5 processes in series
Need 2000 units out

8. Production Requirements – Non Series
Part A
Part B
Work backward from end of the line. M1
s1=1% 1 M2
s3=2% 3 M2 2
s2=2% M3
s4=1% 4 M4
s5=4% 5
100,000 units

10. Distance Measures Euclidean Squared Euclidean Rectilinear Tchebychev
Aisle distance
Adjacency
Shortest Path

11. Euclidean, Squared Euclidean, Rectilinear and Tchebychev

12. Aisle Distance, Adjacency and Shortest Path

13. Layout evaluation criteria
cij cost of moving a unit load of material unit distance between departments i and j
fij number of loads or trips required between departments i and j
dij distance between departments i and j