Ex_1.pdf

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EXERCISE 1 – Determination of Delivery Frequency –
Creating a Model
Please create a new model to produce 100 parts of the Shaft 1, and optimize the arrival
parameters assuming a batch size of 5. The technological operations are defined below.
Part number
1
Part name
Shaft 1
Material
40H
Operation #
Work station
run time
setup time
[h]
[h]
10
Saw
0.015
0.15
20
Lathe
0.25
0.52
30
Milling
machine
0.083
0.3
40
Milling
machine
(horizontal)
0.47
0.5
50
Grinding
machine
(cylindrical)
0.176
0.32
60
Grinding
machine
(splines)
0.37
0.4
70
Lathe
0.015
0.3
80
Modelling Instructions:
1. Location – Create an L or U shaped production line. Besides Locations for each
technological operation create two additional Locations: an Input and an Output; each
with a capacity of 5. (Operation 20 and 70 are performed on the same Lathe!)
2. Entities – Choose an appropriate entity graphics for
Shaft 1
3. Path Networks – Create bi-directional path segments, such that the distance between
neighbouring locations is 2 meters.
Scale your model by changing the Grid settings such that the distance of the
major gird lines equals one meter
4. Resources – One blue collar worker will perform all technological operations and
transport activities. Assign the worker to the previously created Path Network.
5. Processing – Define the Process and Routing according to the given technological
operation.
Process – For the operation define the logic order:
USE
resource name
FOR
time value
Routing – For the Move Logic define the logic order:
MOVE WITH
resource
name
THEN FREE
(Remember not to define a Move Logic at the EXIT
Routing.)
6. Arrivals – Define the Entity (Shaft 1), entry Location of the entity, the Quantity each
(5), First Time (0) and Occurrences. During the first Simulation assume the
Frequency, time in-between deliveries.
7.
Simulation – Run the simulation and find the optimum time in-between deliveries
based on the simulation results.
8. Save your model!

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