| How many products can this factory produce?
|
| Calculate via the cost.
|
Often the calculations are made as follows:
 |
| Available resources |
5 |
| Total available capacity per hour |
60' * 5 = 300' |
| Time to produce one product (see figure 2.1.) |
8' + 6' + 10' + 12' + 4' = 40' |
| Total products Produced per hours |
300'/40'= 7.5 |
| Table 1. Number of products in traditional approach |
|
| Calculate via the reality. |
|
How many finished products can we get out of this factory per hour ?
Let's have a look at the factory in detail and ask yourself the question how much can each unit produce
for example per hour ?
|
|
Resource |
Time per Part |
Parts per Hour |
| A |
60' / 8' |
7.5 |
| B |
60' / 6' |
10 |
| C |
60' /10' |
6 |
| D |
60' /12' |
5 |
| E |
60' / 4' |
15 |
| Table 2. Parts per Hour in Traditional Approach |
All resources, except D, can produce more than 5 pieces. But because of this resource D, we
will never get more than 5 pieces per hour out of this factory!
|
| |
In fact you have applied the same first two steps as in the MMM:
- Step 1: What is the constraint of this MMM ?
Resource D.
- Step 2: How can we exploit this MMM to his full extent?
By making the maximum use of Resource D. Only this will assure, that the JN-Factory produces a maximum of 5 products per
hour.
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