| Title: | Modelling of multiple surface roughness parameters during hard turning: a comparative study between the kinematical-geometrical copying approach and the design of experiments method (DOE) |
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| Authors: | ID Tomov, Mite (Author)
ID Gečevska, Valentina (Author)
ID Vasileska, E. (Author) |
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| Files: |  APEM17-1_075-088.pdf (4,16 MB)
MD5: CF2C6722B70CF0243808922B5898FE69
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| Language: | English |
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| Work type: | Article |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: | FS - Faculty of Mechanical Engineering
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| Abstract: | This paper proposes and applies two different methodologies for modelling the roughness parameters in hard turning. The first method is based on the kinematical-geometrical copying of the cutting tool geometry onto the machined surface including a feedback loop through the parameter of statistic equality of sampling lengths in surface roughness measurements (SE). The other method employs the Design of Experiments (DOE) principles expressing the roughness parameters as first order nonlinear function of the input variables: cutting speed v, feed f, depth of cut ap, and tool nose radius rε. The research includes the Ra and Rz roughness parameters which are commonly modelled throughout the research works, and additionally develops models for the Rp, Rv and Rmr(c) roughness parameters which are more challenging to model compared to Ra and Rz as they depend more on the shape of the roughness profile and position of its mean line. Both methodologies for all roughness parameters were verified using a CNC lathe and special rings made of steel EN C55 with hardness of 53±1 HRC. Considering that the roughness profile is just a part of the total geometric deviations of the processed surfaces, and it is obtained from the total profile using software filtration, the research also considers the Wa parameter (waviness profile), as well as the deviations from the circularity (out-off-roundness) of the processed rings as indicators for the stability of the machining process. |
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| Keywords: | hard turning, surface roughness, roughness parameters, mathematical modelling, prediction modelling, design of experiments, DOE, kinematical-geometrical copying |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Submitted for review: | 16.11.2021 |
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| Article acceptance date: | 03.03.2022 |
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| Publication date: | 29.04.2022 |
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| Publisher: | Fakulteta za strojništvo, Inštitut za proizvodno strojništvo |
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| Year of publishing: | 2022 |
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| Number of pages: | str. 75-88 |
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| Numbering: | Vol. 17, no. 1 |
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| PID: | 20.500.12556/DKUM-97192  |
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| UDC: | 658.5 |
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| ISSN on article: | 1854-6250 |
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| COBISS.SI-ID: | 269101571 |
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| DOI: | 10.14743/apem2022.1.422 |
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| Copyright: | Content from this work may be used under the terms of the Creative Commons Attribution 4.0 International Licence (CC BY 4.0). Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation, and DOI. |
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| Publication date in DKUM: | 23.02.2026 |
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| Views: | 133 |
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| Downloads: | 1 |
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| Metadata: |    |
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| Categories: | Misc.
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