Analysis of Misconstraining during Manual Assembly at Volvo Cars
Typ
Examensarbete för masterexamen
Program
Product development (MPPDE), MSc
Publicerad
2021
Författare
Arvidsson, Erik
Kumar, Vasanth
Modellbyggare
Tidskriftstitel
ISSN
Volymtitel
Utgivare
Sammanfattning
The rising need for increased robustness among products and processes worldwide
has made it essential to research areas around geometrical variation and robust de sign. The presence of humans in the assembly process is inevitable due to the high
levels of flexibility they can exhibit. However, the ways humans contribute to geo metrical variation in a robust design perspective have not been significantly studied.
As an attempt to break this novelty barrier, this thesis focuses on investigating and
examining the concept of misconstraining in the context of an error phenomenon at
Volvo Car Corporation through a series of case studies, semi-structured interviews,
and tests. Following a standard product development process, the main aim of the
thesis is to provide proof of concept for misconstraining and develop a framework
for analyzing misconstraining from a manual assembly perspective. The test cases
present in the thesis have been designed by keeping in mind the parameters in volved in the manual assembly process, like assembly sequence and the surrounding
conditions. The results have been corroborated by analyzing graphical plots and
extensive evaluation of the various case studies.
Ultimately, by utilizing all the information brought to light, the thesis resulted in
developing a detailed mapping of the different causes and effects of misconstrain ing. Furthermore, the tests conducted revealed how the play between the guiding
elements leads to geometrical variation in connection to human error contribution
and how the change in screw sequence during assembly expedites misconstraining.
The thesis concludes with a list of recommendations to tackle misconstraining and
the envisioned forms of misconstraining. Also, a solid amount of information vital
for future research has been presented with some exciting visualization about the
concept moving forward.
Beskrivning
Ämne/nyckelord
Geometry assurance, manual assembly, geometrical variation, , miscostraining, robustness, assembly sequence, misguiding, system solution, tolerancen