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Automatic Wire Cutter
KTH, School of Industrial Engineering and Management (ITM).
KTH, School of Industrial Engineering and Management (ITM).
2019 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesisAlternative title
Automatisk kabelklippare (Swedish)
Abstract [en]

This bachelor thesis project in mechatronics involved making a working prototype of an automatic wire cutter and evaluating its accuracy. The accuracy of the machine was increased by analysing measurements of the machine’s initial precision and thereafter performing a calibration to diminish the eect of unwanted errors. Before calibration the machine’s accuracy was ± 0.73 cm and after calibration it was calculated to be ± 0.06 cm in its intended operating range of 5-20 cm. The main limitations of the machine’s accuracy were determined to be slippage in the feeding mechanism, the mathematical model that was used, the step resolution of the stepper motors, the oset between the blades in the cutting mechanism as well as the wires bending when being fed.

Abstract [sv]

I detta kandidatexamnesarbete inom mekatronik designades och tillverkades en fungerande prototyp av en automatisk kabelklippare, och dess noggrannhet undersöktes sedan. Maskinens noggrannhet förbättrades genom att först undersöka maskinens ursprungliga noggrannhet och därefter kalibrerades maskinen för att minska effekten av oönskade fel. Före kalibrering var maskinens noggrannhet ± 0,73 cm och efteråt räknades den ut att vara ± 0,06 cm i dess tilltänkta driftintervall på 5-20 cm. De huvudsakliga begränsningarna för maskinens noggrannhet visade sig vara glidning i matningsmekanismen, den matematiska modellen, stegmotorns stegupplösning, avståndet mellan bladen i klippmekanismen samt att kablarna böjer sig under frammatning.

Place, publisher, year, edition, pages
2019. , p. 67
Series
TRITA-ITM-EX ; 2019:19
Keywords [en]
Thesis, mechatronics, electronics, automatic, wire, cutter, accuracy
Keywords [sv]
Examensarbete, mekatronik, elektronik, automatisk, klippa, kablar, noggrannhet
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-264517OAI: oai:DiVA.org:kth-264517DiVA, id: diva2:1373926
Supervisors
Examiners
Available from: 2019-11-28 Created: 2019-11-28 Last updated: 2019-11-28Bibliographically approved

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