Reproducibility of a reaming test

Lukas Pilny, Pavel Müller, Leonardo De Chiffre

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Abstract

The reproducibility of a reaming test was analysed to document its applicability as a performance test for cutting fluids. Reaming tests were carried out on a drilling machine using HSS reamers. Workpiece material was an austenitic stainless steel, machined using 4.75 m∙min-1 cutting speed and 0.3 mm∙rev-1 feed. A mineral straight oil and a water-based lubricant at two different oil concentrations were compared with respect to hole quality, evaluated in terms of surface finish (conventional average roughness parameter Ra and roughness profiles), and hole geometry (hole diameter and roundness). Process reproducibility was assessed as the ability of different operators to ensure a consistent rating of individual lubricants. Absolute average values as well as experimental standard deviations of the evaluation parameters were calculated, and uncertainty budgeting was performed. Results document a built-up edge occurrence hindering a robust evaluation of cutting fluid performance, if the data evaluation is based on surface finish only. Measurements of hole geometry provide documentation to recognize systematic error distorting the performance test.
Original languageEnglish
Title of host publicationProceedings of the 5th International Swedish Production Symphosium
Publication date2012
Pages199-205
ISBN (Print)978-91-7519-752-4
Publication statusPublished - 2012
Event5th International Swedish Production Symposium - Linköping University, Linköping, Sweden
Duration: 6 Nov 20128 Nov 2012

Conference

Conference5th International Swedish Production Symposium
LocationLinköping University
CountrySweden
CityLinköping
Period06/11/201208/11/2012

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