Addressing Surface Error Problems Found when Using Multiple Axis Milling for the Manufacture of Turbine Impellers |
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Authors: | H. Edling D.K. Harrison D. Kirkwood H. Bauer |
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Affiliation: | (1) Department of Engineering, Glasgow Caledonian University, Glasgow, UK, GB;(2) CAD/CAM-Centre, Fachhochschule Aalen, Germany, DE |
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Abstract: | This paper addresses the phenomenon of circular dots, which often occur on the component surface as a result of 5-axis machining. These dots occur typically at the interface of two or more patches owing to the cutter fouling adjoining surfaces whilst machining is being undertaken on a particular patch. The action described above forms a half-dot in the adjoining surface. This is made into a full dot, when, during the machin-ing of the second surface, the first surface is fouled. This paper is concerned with an industrial case study, namely the machining of a hydraulic transmission turbine impeller blade. The work does not eradicate the dot problem; however, it reduces the occurrence. To achieve a component completely free from the dot problem it was necessary to amend the milling strategy to minimise the motion of the A and B axes. RID=" ID=" Correspondence and offprint requests to: Professor D. K. Harrison, Department of Engineering, Caledonian University, City Campus, Cowcaddens Road, Glasgow, G4 0BA, UK. E-mail: dha2@gcal.ac.uk |
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Keywords: | : B-spline Bezier-spline CAD/CAM Milling RID=" ID=" Correspondence and offprint requests to: Professor D. K. Harrison, Department of Engineering, Caledonian University, City Campus, Cowcaddens Road, Glasgow, G4 0BA, UK. E-mail: dha2& commat gcal.ac.uk |
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