Ex_4.pdf

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EXERCISE 4 –Diverse Production Plan
Please enlarge the previous simulation model (Exercise 3) to include the technological
operations to also produce Shaft 1, as indicated below. Optimize the arrival parameters.
Part number
13
Part name
Gear 1
Material
40H
Operation #
Work station
run time
setup time
Part number
1
Part name
Shaft 1
Material
40H
Operation #
Work station
run time
setup time
[h]
[h]
[h]
[h]
10
Saw
0.03
0.15
20
Lathe
0.15
0.45
30
Hobbing
machine
0.48
0.6
40
Drill
Press
0.2
0.23
50
Broaching
machine
0.2
0.25
60
Hardening
station
2
0.5
70
QC
0.1
0.25
80
10
Saw
0.015
0.15
20
Lathe
0.25
0.52
30
Keyway
cutter
0.083
0.3
40
Horizontal
Milling
Machine
0.47
0.5
50
Hardening
Station
2
0.5
60
Cylindrical
Grinder
0.176
0.32
70
Splines
Grinder
0.37
0.4
80
Lathe
0.015
0.52
90
QC
0.1
0.25
Modelling Instructions:
1. Create the four missing Locations for Shaft 1 (the same Lathe is used for all
operations of both parts)
2. Assign the setup time to the shared Locations (see technological operation)
3. Create a second Variable (global)
counter1
(to count shafts)
4. Add two entities for the Shaft (Shaft_1 and
group_shaft_1)
5. Remember to assign new Interfaces in Path Networks
6. Use the same Resources as previously
7. Add the Processing and Routing information for the shaft – assume the same
Modelling Instruction as in Exercise 2 and 3
8. Set up the Arrival parameters according to the Production Plan below. Define the First
Time for optimum sequencing of parts – Gear 1 should be commenced immediately
after the Input pallet is released (free) from Shaft 1. (Update Location Capacity based
on the Production Plan)
Part
Number of units
Batch size
Group Hardening
Production Plan
Shaft 1
Gear 1
40
120
5
15
5
10
Shaft 1
60
10
5
Gear 1
80
10
10
Process
Entity
Station
Operation
Blk
…
-
-
…
USE
resource name
FOR
time value
counter1
=
counter1
+ 1
IF
counter1
>= 10
THEN
BEGIN
route 1
counter1
= 0
END
ELSE
BEGIN
route 2
END
1
1
…
1
Output
…
gear
Shaft_1
…
Shaft_1
Routing
Destination
Rule
…
Exit
Saw
…
QC
…
FIRST 1
FIRST 1
…
FIRST 1
…
Move Logic
Previous process …
gear
Shaft_1
…
Output
Input
…
-
MOVE WITH
resource name
THEN
FREE
…
MOVE WITH
resource name
THEN
FREE
Shaft_1
Lathe
2
Shaft_1
OUTPUT
FIRST 1
MOVE WITH
resource name
THEN
FREE
Process continuation …
…
…
…
…
…

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