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Analys av tillverkningsmetoder till ellådor i BAE Systems Hägglunds fordon
Umeå University, Faculty of Science and Technology, Department of Applied Physics and Electronics.
Umeå University, Faculty of Science and Technology, Department of Applied Physics and Electronics.
2024 (Swedish)Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesisAlternative title
Analysis of manufacturing methods for electrical enclosures in BAE Systems Hägglunds vehicles (English)
Abstract [sv]

Vid design av produkter har tillverkningsmetoden stor effekt på både pris och kvalitet. Inom detta projekt undersöktes vilka tillverkningsmetoder som blir mest kostnadseffektiva vid tillverkning av ellådor till BAE Systems stridsfordon. 

Arbetet har utförts åt BAE Systems avdelning för vehicle electronics i Örnsköldsvik. Syftet med projektet var att kartlägga möjliga tillverkningsmetoder och värdera de utifrån kategorierna pris, vikt, kvalitet och seriestorlek. Två olika ellådor har studerats i projeket, en mindre låda med måtten 220x150x50 mm benämnd VCU och en större mer komplex låda med måtten 420x410x170 mm benämnd CPDU. Arbetet avser en undersökning av tillverkning i tre produktionsserier: 1–10 enheter, 10–200 enheter, samt 200–2000 enheter.

Insamlingen av information har skett genom att kontakta tillverkningsföretag och de resultat som presenteras har hämtats in genom konversationer, möten och undersökningar. 

Projektet har kommit fram till att den billigaste metoden (som samtidigt ger tillräckligt hög kvalitet) för 1-10 st enheter är bearbetning i aluminium eller 3D printing för VCU:n, och kolfiberpressing  för CPDU:n. För 10 - 200 st är de billigaste alternativen bearbetning i aluminium för VCU:n, och kolfiberpressning eller bearbetning i aluminium för CPDU:n. I spannet 200 - 2000 st visar resultaten att de billigaste teknikerna är  antingen sandgjutning eller pressgjutning för båda lådorna. 

Abstract [en]

When designing products, the manufacturing method has a significant impact on both cost and quality. The aim of this project was to investigate which manufacturing methods are most cost-effective for producing electric enclosures for BAE Systems combat vehicles. 

The work has been carried out for BAE Systems' Vehicle Electronics department in Örnsköldsvik. The purpose of the project was to map possible manufacturing methods and evaluate them based on the categories of cost, weight, quality, and size of series. Two different electrical enclosures have been studied in the project, a smaller enclosure with dimensions 220x150x50 mm referred to as VCU, and a larger, more complex box with dimensions 420x410x170 mm referred to as CPDU. The work includes an investigation of manufacturing series of 1-10 units, 10-200 units, and 200-2000 units.

The information was collected by contacting manufacturing companies and the results presented were obtained through conversations, meetings, and literature investigations.

The results show that the cheapest methods (while simultaneously providing sufficient quality) for 1-10 units are machining in aluminum or 3D printing for the VCU and carbon fiber lamination for the CPDU. For 10-200 units, the cheapest options are machining in aluminum for the VCU and carbon fiber lamination or machining in aluminum for the CPDU. For 200-2000 units, the conclusion is that the cheapest options are either sand casting or die casting for both enclosures.

Place, publisher, year, edition, pages
2024. , p. 49
Keywords [sv]
Produktionsteknik, Tillverkningsteknik, Försvarsindustri, Kvalitetsteknik, Materialteknik
National Category
Production Engineering, Human Work Science and Ergonomics Reliability and Maintenance Mechanical Engineering
Identifiers
URN: urn:nbn:se:umu:diva-234588OAI: oai:DiVA.org:umu-234588DiVA, id: diva2:1931202
External cooperation
BAE Systems Hägglunds
Subject / course
Maskinteknik
Educational program
Bachelor of Science Engineering in Mechanical Engineering
Presentation
, Umeå
Supervisors
Examiners
Available from: 2025-01-31 Created: 2025-01-25 Last updated: 2025-01-31Bibliographically approved

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Department of Applied Physics and Electronics
Production Engineering, Human Work Science and ErgonomicsReliability and MaintenanceMechanical Engineering

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