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Internal sensor measurement to reduce the need of coordinate measuring machines
Högskolan Väst, Institutionen för ingenjörsvetenskap, Avdelningen för avverkande och additativa tillverkningsprocesser (AAT).
2017 (engelsk)Independent thesis Advanced level (degree of Master (One Year)), 10 poäng / 15 hpOppgave
Abstract [en]

This thesis presents the approach of determining the machining  errors on a five axis CNC machine using sensors already fitted in the machine to extract valuable data up on process called CITE(CNC Integrity Tracing Equipment) system and measuring the machined workpiece geometry using CMM(Coordinate measurement machine). CITE measurement system is the data acquisition hardware and software system developed by University West for collecting position information from encoders of a machine tool. The collected information could then be used to assess the quality and adjustment of a machine tool, CNC programs and the CNC control parameters. The aim of this study is to examine the roundness and concentricity detection capacity of the CITE system by conducting different milling methods and a turning process. In an example cutting of a workpiece, the CITE measurement system was used for recording the machining process. After that, radial error, centre point deviation and circle roundness errors, analysed using MATLAB based on collected CNC tool movement data. CMM measurement used to verify the results obtained from the CITE measurement system. The investigation conducted on the small circles shows that the CITE measurement system have capability of identifying radial errors in different method of millings (slot, up and down). Centre point deviation and roundness errors measured by the CITE system doesn`t show significant differences between milling methods as seen on CMM measurement.

sted, utgiver, år, opplag, sider
2017. , s. 24
Emneord [en]
Milling processes, Measuring systems, Radial error, Roundness
HSV kategori
Identifikatorer
URN: urn:nbn:se:hv:diva-11679Lokal ID: EXP800OAI: oai:DiVA.org:hv-11679DiVA, id: diva2:1145481
Fag / kurs
Mechanical engineering
Utdanningsprogram
Produktionsteknik
Veileder
Examiner
Tilgjengelig fra: 2017-10-06 Laget: 2017-09-29 Sist oppdatert: 2017-10-06bibliografisk kontrollert

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