Redesign of the presetting process at Fokker Aerostructures Hoogeveen

Reuvers, Koen (2019) Redesign of the presetting process at Fokker Aerostructures Hoogeveen. Design Project, Industrial Engineering and Management.

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Abstract

Fokker Aerostuctures Hoogeveen produces fiber-reinforced plastic parts (composites) for the aerospace industry. In order to survive in the competitive aerospace market, Fokker constantly raises the bar for its composite production process. For this reason, a design project has been conducted focusing on presetting; a manual process wherein tool assemblies are built for machining of composite parts. At the moment, much time is wasted in this presetting process because operators are conducting rework whereas the end results are also undesired, since many tool assemblies are not meeting the releasing requirements: the presetting tolerances. As a result, the objective of the design project was to propose a redesign that reduces rework and avoids non-conforming tool assemblies. After a sophisticated performance system analysis, it was discovered that that the majority of problems are related to one sub process: the presetting of tool assemblies with collet chuck holders. For this reason, an artefact has been developed exclusively for the presetting process of collet chuck holders. With the aid of the performance system framework and multi-criteria decision analysis, the redesign was established. The proposed redesign includes four countermeasures: a formula to adjust the current diameter tolerances for presetting, the replacement of poor collets and clamping nuts and a new education and feedback procedure that can be used to educate and coach employees regarding the presetting process. It was found that the redesign adequately avoids rework and ensures that the tool assemblies are conforming specifications. It was computed that Fokker Aerostructures can reduce the total amount of rework with 71.7% by implementing the redesign, whereas the total proportion conforming tool assemblies can be increased from 56% to 81.1%.

Item Type:	Thesis (Design Project)
Supervisor name:	Larsen, G.K.H.
Degree programme:	Industrial Engineering and Management
Thesis type:	Design Project
Language:	English
Date Deposited:	11 May 2019
Last Modified:	23 May 2019 08:46
URI:	https://fse.studenttheses.ub.rug.nl/id/eprint/19458

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