2. Fundamentación y presentación de la propuesta
2.1 Diagnóstico y determinación de necesidades
From the held interviews and the objectives of this project the following criteria where determined. Each criterion will be shortly explained and the scale of grading will be given which will be used to score the different alternatives.
Labour/man-hours
The most named demand in the interviews and an aspect of this projects goal. The LFE package assembly process takes quite a bit of time, of which a significant amount is necessary but non value adding. From the interviews it became apparent that the less man-hours the process takes the better it is. At the least the counting and orienting of the majority of the large packages (20K, 50K and/or 70K) should be eliminated, as far as one of the Q-engineers is concerned. The scoring of this criterion can be found in Table 4-1. A score can be between two defined scores, in that case a 0.5 will be added to the lower score. This is a beneficial criterion, the higher scores are more desired than lower scores.
Score 0 1 2 3 4 5
Description
The man-hours will increase
The man-hours will remain the same
The NNVA time (excl. setup and clean-up) of at least 2 of the 3 larger packages (20K, 50K, 70K) is eliminated
The NNVA time (excl. set-up and clean-up) is eliminated for at least one package per LFE type
The NNVA time (excl. set-up and clean-up) of all packages is eliminated
The NNVA time is eliminated for all
packages and there are less man-hours necessary for the “pure” assembly Table 4-1 Scoring table of the criteria “Labour/man-hours”
Job satisfaction
Named by the most prominent of the interviewees and supported by the production personnel that participated in the measurements done for the analysis (chapter 2). The assembly of LFE packages is not one of the tasks that is particularly enjoyed, additionally it consists out of mostly repetitive movements increasing the risk of RSI. Currently there is also a companywide project that, among others, emphasises the joy and meaning employees should get from their work. The job satisfaction could be increased by reducing the time the production personnel needs to spent on the assembly, by limiting the time in the flow bench or by limiting the repetitive movements. The scoring of this criterion can be found in Table 4-2. This is a beneficial criterion, the higher scores are more desired than lower scores.
Score 0 1 2 3 4 5
Description
The time spent on assembly increases OR The amount of repetitive The process does not alter in regards to assembly time or repetitive movements
The time spent on assembly is reduced (by the NNVA time of 2 of the larger packages)
The time spent on assembly is reduced (by the NNVA time all packages)
OR
The time spent on assembly only consist out of pure assembly (no counting or The entire assembly process has no longer need of regular human interference
42 movements increases OR The amount of repetitive movements is reduced by 1 of these process steps: counting, orienting, assembly The amount of repetitive movements is reduced by 2 of these process steps: counting, orienting, assembly orienting)
Table 4-2 Scoring table of the criteria “Job satisfaction” Degree of automation
Most interviewees showed interest in an automated solution, both partial and complete automation are welcomed. Although the further in the future the alternative is implemented the higher the degree of automation should be. The scoring of this criterion can be found in Table 4-3. This is a beneficial criterion, the higher scores are more desired than lower scores.
Score 0 1 2 3 4 Description No form of automation present in the process Counting of the LFEs is done automatically OR Orienting of LFEs is done automatically Counting and orienting are done automatically
Counting, orienting and stacking are done automatically
The entire assembly is done automatically
Table 4-3 Scoring table of the criteria “Degree of automation” Quality
Not always explicitly mentioned as a demand, wish or otherwise by the interviewees. Interestingly the team leader process engineering focused more on the quality aspect while the representatives of the TGP1 production department were focusing on the time aspect. The quality aspect is however a large part of the goal set in this project (reducing the reject rate from 4% to 2%). The greatest quality issue that was identified is the variation found in the LFEs. The degree in which this problem is tackled will
determine the quality score. The scoring of this criterion can be found in Table 4-4. This is a beneficial criterion, the higher scores are more desired than lower scores.
Score 0 1 2
Description Variation in LFEs is not addressed Variation in LFEs is taken into account The variation in the LFEs themselves is addressed
Table 4-4 Scoring table of the criteria “Quality” Space
A subject that is not particularly important to the interviewees. In the current production facility an
alternative should not take up more space than is currently used for the LFE assembly. For the long term alternatives space is not (yet) an issue as the entirely new production facility still has to be designed. There is a common consensus that a compact solution would be more ideal than a large one, especially when the production of LFE packages remains within the production line of TGP1. The scoring of this criterion can be found in Table 4-5. This is a beneficial criterion, the higher scores are more desired than lower scores.
Score 0 1 2
Description
Takes up more space than the current workspace allocated to the LFE package assembly process
Takes up equal space as the current workspace allocated to the LFE package
assembly process
Takes up less space than the current workspace allocated to the LFE package assembly process Table 4-5 Scoring table of the criteria “Space”
43