Determination of the Cutting-Edge Microgeometry Based on Process Forces during Peripheral Milling of Ti-6Al-4V Using Machine Learning

The residual stress state of the machined sub-surface influences the service quality indicators of a component, such as fatigue life, tribological properties, and distortion. During machining, the radius of the cutting edge changes due to tool wear. The cutting-edge rounding significantly affects th...

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Main Authors: Matthias Wimmer, Roman Hartl, Michael F. Zaeh
Format: Article
Language:English
Published: MDPI AG 2023-05-01
Series:Journal of Manufacturing and Materials Processing
Subjects:
Online Access:https://www.mdpi.com/2504-4494/7/3/100
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author Matthias Wimmer
Roman Hartl
Michael F. Zaeh
author_facet Matthias Wimmer
Roman Hartl
Michael F. Zaeh
author_sort Matthias Wimmer
collection DOAJ
description The residual stress state of the machined sub-surface influences the service quality indicators of a component, such as fatigue life, tribological properties, and distortion. During machining, the radius of the cutting edge changes due to tool wear. The cutting-edge rounding significantly affects the residual stress state in the part and the occurring process forces. This paper presents a tool wear prediction model based on in-process measured cutting forces. The effects of the cutting-edge geometry on the force behavior and the machining-induced residual stresses were examined experimentally. The resulting database was used to realize a Machine Learning algorithm to calculate the hidden value of tool wear. The predictions were validated by milling experiments using rounded cutting edges for different process parameters. The microgeometry of the cutting edge could be determined with a Root Mean Square Error of 8.94 μm.
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spelling doaj.art-89ac17dcedc549198ebb184867e963742023-11-18T11:05:31ZengMDPI AGJournal of Manufacturing and Materials Processing2504-44942023-05-017310010.3390/jmmp7030100Determination of the Cutting-Edge Microgeometry Based on Process Forces during Peripheral Milling of Ti-6Al-4V Using Machine LearningMatthias Wimmer0Roman Hartl1Michael F. Zaeh2TUM School of Engineering and Design, Technical University of Munich, 85748 Garching, GermanyTUM School of Engineering and Design, Technical University of Munich, 85748 Garching, GermanyTUM School of Engineering and Design, Technical University of Munich, 85748 Garching, GermanyThe residual stress state of the machined sub-surface influences the service quality indicators of a component, such as fatigue life, tribological properties, and distortion. During machining, the radius of the cutting edge changes due to tool wear. The cutting-edge rounding significantly affects the residual stress state in the part and the occurring process forces. This paper presents a tool wear prediction model based on in-process measured cutting forces. The effects of the cutting-edge geometry on the force behavior and the machining-induced residual stresses were examined experimentally. The resulting database was used to realize a Machine Learning algorithm to calculate the hidden value of tool wear. The predictions were validated by milling experiments using rounded cutting edges for different process parameters. The microgeometry of the cutting edge could be determined with a Root Mean Square Error of 8.94 μm.https://www.mdpi.com/2504-4494/7/3/100millingtitanium alloy Ti-6Al-4Vresidual stressesprocess forcescutting-edge radiusmachine learning
spellingShingle Matthias Wimmer
Roman Hartl
Michael F. Zaeh
Determination of the Cutting-Edge Microgeometry Based on Process Forces during Peripheral Milling of Ti-6Al-4V Using Machine Learning
Journal of Manufacturing and Materials Processing
milling
titanium alloy Ti-6Al-4V
residual stresses
process forces
cutting-edge radius
machine learning
title Determination of the Cutting-Edge Microgeometry Based on Process Forces during Peripheral Milling of Ti-6Al-4V Using Machine Learning
title_full Determination of the Cutting-Edge Microgeometry Based on Process Forces during Peripheral Milling of Ti-6Al-4V Using Machine Learning
title_fullStr Determination of the Cutting-Edge Microgeometry Based on Process Forces during Peripheral Milling of Ti-6Al-4V Using Machine Learning
title_full_unstemmed Determination of the Cutting-Edge Microgeometry Based on Process Forces during Peripheral Milling of Ti-6Al-4V Using Machine Learning
title_short Determination of the Cutting-Edge Microgeometry Based on Process Forces during Peripheral Milling of Ti-6Al-4V Using Machine Learning
title_sort determination of the cutting edge microgeometry based on process forces during peripheral milling of ti 6al 4v using machine learning
topic milling
titanium alloy Ti-6Al-4V
residual stresses
process forces
cutting-edge radius
machine learning
url https://www.mdpi.com/2504-4494/7/3/100
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AT romanhartl determinationofthecuttingedgemicrogeometrybasedonprocessforcesduringperipheralmillingofti6al4vusingmachinelearning
AT michaelfzaeh determinationofthecuttingedgemicrogeometrybasedonprocessforcesduringperipheralmillingofti6al4vusingmachinelearning