Geometrical Locating Scheme for Complex Hybrid Manufacturing: Multiple Additive Manufacturing and Machining
Typ
Examensarbete för masterexamen
Program
Publicerad
2019
Författare
Maragowdanahalli Somasundar, Advaith
Paul, David
Modellbyggare
Tidskriftstitel
ISSN
Volymtitel
Utgivare
Sammanfattning
The technology of additive manufacturing is rapidly developing as one of the most
sustainable alternatives for the traditional manufacturing processes. Additive manufacturing
technologies offer numerous advantages such as weight reduction, design
freedom, reducing material waste and so on. But to manufacture complex components,
the traditional manufacturing processes are still needed to obtain the final
desired geometry.
DiSAM is one such project that is happening in Sweden, aiming to improve the
technology readiness of additive manufacturing processes. A complex aircraft component
is being manufactured in this project using both additive manufacturing
and traditional manufacturing processes. In this process of complex manufacturing
where, multiple additive manufacturing processes and machining processes are involved,
the effect of the locating scheme in each step of manufacturing process plays
a vital role in providing the desired geometrical accuracy.
This thesis work was carried out to develop a locating scheme that was most suitable
to follow in this complex manufacturing process chain. The component from the
engine exit structure of a gas turbine engine which is termed as "H-Sector" was the
product in focus.
Information was collected through interviews with the stakeholders of the DiSAM
project. The manufacturing process flow was studied to finalize on the parameters
that affects the geometrical accuracy at different manufacturing steps. The critical
areas of the components were identified which needs to be focused in developing
locating scheme at each manufacturing step.
The software RD&T was used in evaluating the locating schemes. Different locating
scheme strategies were developed. Sensitivity analysis was carried out to compare
between the strategies and finalizing on the final locating scheme.
This thesis outcome will help in making decisions regarding the locating scheme
for the DiSAM project. The same method can be followed in developing different
locating scheme for different geometry in the future.
Beskrivning
Ämne/nyckelord
H-sector,locating scheme,SLM,LMD,machining,RD&T