AD ALTA
JOURNAL OF INTERDISCIPLINARY RESEARCH
8
bring it to strapping machine
NVA
0.5
X
1.67
0.04
OK
X
9
strapping
NVA
1
X
3.33
0.04
OK
X
10 writing on box
NVA
0.5
X
1.67
OK
0.04
X
11 bring it to weighing-machine
NVA
0.5
X
1.67
0.04
0.4
X
12 weighing
NVA
1.0
X
3.33
OK
0.04
X
13 waiting for printing
NVA
1.0
X
3.33
OK
OK
X
14 stick information
NVA
2.0
X
6.67
OK
OK
X
15 bring the package on palette
NVA
2.0
X
6.67
0.04
0.04
X
16 fix it together
NVA
5.0
X
16.67
0.08
0.04
X
Tab. 3:
Same way as for original state, partial Process’ Idealities were
calculated and summed for a new degree of Process’ Ideality,
results are in Table 4.
Improved state of the packing process
Table 4 below compares the original and improved process in a
way of partial, and overall Process Idealities.
process’ state
time
(pPI
T
)
quality
(pPI
Q
)
costs
(pPI
C
)
safety
(pPI
S
)
ergonomics
(pPI
ERG
)
ecology
(pPI
ECO
)
Process’
Ideality
original
0.275
24.000
0.235
7.353
2.604
25.000
59.467
improved
0.333
24.000
0.273
9.615
13.636
25.000
72.858
Tab. 4:
As can be seen, partial Idealities can also serve as an indicator,
of what factor we should focus on in our improvement efforts. In
the original state, time, costs, and ergonomics are the worst
factors. Improvement is most significant on ergonomics but the
main point of improvement was on time. If the Ideality concept
would be used, the improvement of the process could be
achieved in all aspects of Ideality.
Comparison of the original and improved state of the packing process
4.1 Limitations
Calculation of some parameters from real processes could be a
challenging and time-consuming task. That is why there is a
possibility to make some simplifications for complex processes.
The main point should be to do the calculation with the same
rules for the current state and also for all other states for
comparison.
From a case study, there was shown that quality, for example,
can be calculated for the whole process not only as a sum of
defects for each step. The same is with the ecology of the
process, sometimes there is hard to determine parameters for
each step, overall determination for the whole process is then
possible.
These equations and procedures are not the bulletproof methods
of how we should determine an Ideality degree of processes.
They should help us with the calculation of Process’ Ideality in
real processes because original equations are too theoretical.
They should also help us to focus on all aspects of the process
and achieve better and more complex improvements.
Determination of values for specific parameters could be
described in a more detailed way, but that is out of the frame of
this paper.
4 Conclusion
As it was seen before, Ideality can be a good way how to achieve
better results in attempts for process’ improvement. For
manufacturing processes, it is hard to determine the degree of
Ideality by standard equation from TRIZ. That is why a new
model for Ideality calculation especially for processes was made.
This Equation includes parameters as process time, quality,
costs, but also safety, ergonomics, and ecology of the process.
That allows us to use only one parameter – the degree of Ideality
to determine a state of the current process, or to compare it with
a new proposal for process’ improvements. This method also
pushes us to focus, not only on parameters connected with time
and cost, but also on parameters connected to safety, health, and
environment which is nowadays more and more needed. Partial
Process’ Idealities can also help us to focus our improvement
efforts mainly on one or several worst aspects of the process.
By focusing on Process’ Ideality, better results on process’
improvement could be achieved. Shorter time of production,
fewer defects, lower costs, better safety, better ergonomics, and
lower environmental impact of the processes will positively
affect the economic state of the company.
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