Advanced design and manufacturing of custom orthotics insoles based on hybrid Taguchi-response surface method

Herein, a machining strategy to fabricate custom orthotic insoles with high surface finish and wide fit tolerance is presented. CNC milling was used to machine ethylene-vinyl acetate (EVA) foam for insoles with various surface hardness, and the Taguchi-response surface method (TM-RSM) was adopted to...

Full description

Bibliographic Details
Main Authors: P.W. Anggoro, B. Bawono, J. Jamari, M. Tauviqirrahman, A.P. Bayuseno
Format: Article
Language:English
Published: Elsevier 2021-03-01
Series:Heliyon
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2405844021005867
_version_ 1818870827654840320
author P.W. Anggoro
B. Bawono
J. Jamari
M. Tauviqirrahman
A.P. Bayuseno
author_facet P.W. Anggoro
B. Bawono
J. Jamari
M. Tauviqirrahman
A.P. Bayuseno
author_sort P.W. Anggoro
collection DOAJ
description Herein, a machining strategy to fabricate custom orthotic insoles with high surface finish and wide fit tolerance is presented. CNC milling was used to machine ethylene-vinyl acetate (EVA) foam for insoles with various surface hardness, and the Taguchi-response surface method (TM-RSM) was adopted to optimize the parameters of the CNC milling process (cutting speed, feed rate, tool path strategy, and step over). EVA foam with varying surface hardness and the tolerance of the wide fit insoles corresponding to the surface roughness were analyzed. Subsequently, a mathematical model was established to determine the optimal CNC milling parameters for a standard milling cutter under dry coolants. The results of the six parameters corresponding to the mean values of surface roughness were initially examined using the signal-to-noise ratio of the Taguchi method (TM). The surface roughness obtained with the TM-RSM was up to 4.13% higher than that obtained with the TM. The EVA foam insole with a surface hardness of 50–60 HRC and a wide fit tolerance of 0.75 mm provided the ideal level of comfort and support for patients with diabetes. The results of this study demonstrated that CNC milling provided a better surface finish of orthotic shoe insoles than other methods, which can serve as guidance in the development of machining strategies for insoles made from EVA foam.
first_indexed 2024-12-19T12:13:13Z
format Article
id doaj.art-61b720971fc5434e84af14cce038a9ae
institution Directory Open Access Journal
issn 2405-8440
language English
last_indexed 2024-12-19T12:13:13Z
publishDate 2021-03-01
publisher Elsevier
record_format Article
series Heliyon
spelling doaj.art-61b720971fc5434e84af14cce038a9ae2022-12-21T20:22:06ZengElsevierHeliyon2405-84402021-03-0173e06481Advanced design and manufacturing of custom orthotics insoles based on hybrid Taguchi-response surface methodP.W. Anggoro0B. Bawono1J. Jamari2M. Tauviqirrahman3A.P. Bayuseno4Department of Industrial Engineering, Faculty of Industrial Technology, University of Atma Jaya Yogyakarta, Jl. Babarsari 44, Yogyakarta 55281, Indonesia; Corresponding author.Department of Industrial Engineering, Faculty of Industrial Technology, University of Atma Jaya Yogyakarta, Jl. Babarsari 44, Yogyakarta 55281, IndonesiaDepartment of Mechanical Engineering, University of Diponegoro, Jl. Prof. Soedarto, SH., Tembalang, Semarang 50275, IndonesiaDepartment of Mechanical Engineering, University of Diponegoro, Jl. Prof. Soedarto, SH., Tembalang, Semarang 50275, IndonesiaDepartment of Mechanical Engineering, University of Diponegoro, Jl. Prof. Soedarto, SH., Tembalang, Semarang 50275, IndonesiaHerein, a machining strategy to fabricate custom orthotic insoles with high surface finish and wide fit tolerance is presented. CNC milling was used to machine ethylene-vinyl acetate (EVA) foam for insoles with various surface hardness, and the Taguchi-response surface method (TM-RSM) was adopted to optimize the parameters of the CNC milling process (cutting speed, feed rate, tool path strategy, and step over). EVA foam with varying surface hardness and the tolerance of the wide fit insoles corresponding to the surface roughness were analyzed. Subsequently, a mathematical model was established to determine the optimal CNC milling parameters for a standard milling cutter under dry coolants. The results of the six parameters corresponding to the mean values of surface roughness were initially examined using the signal-to-noise ratio of the Taguchi method (TM). The surface roughness obtained with the TM-RSM was up to 4.13% higher than that obtained with the TM. The EVA foam insole with a surface hardness of 50–60 HRC and a wide fit tolerance of 0.75 mm provided the ideal level of comfort and support for patients with diabetes. The results of this study demonstrated that CNC milling provided a better surface finish of orthotic shoe insoles than other methods, which can serve as guidance in the development of machining strategies for insoles made from EVA foam.http://www.sciencedirect.com/science/article/pii/S2405844021005867EVA foamCNC millingRSMTaguchi methodSurface roughnessOptimization
spellingShingle P.W. Anggoro
B. Bawono
J. Jamari
M. Tauviqirrahman
A.P. Bayuseno
Advanced design and manufacturing of custom orthotics insoles based on hybrid Taguchi-response surface method
Heliyon
EVA foam
CNC milling
RSM
Taguchi method
Surface roughness
Optimization
title Advanced design and manufacturing of custom orthotics insoles based on hybrid Taguchi-response surface method
title_full Advanced design and manufacturing of custom orthotics insoles based on hybrid Taguchi-response surface method
title_fullStr Advanced design and manufacturing of custom orthotics insoles based on hybrid Taguchi-response surface method
title_full_unstemmed Advanced design and manufacturing of custom orthotics insoles based on hybrid Taguchi-response surface method
title_short Advanced design and manufacturing of custom orthotics insoles based on hybrid Taguchi-response surface method
title_sort advanced design and manufacturing of custom orthotics insoles based on hybrid taguchi response surface method
topic EVA foam
CNC milling
RSM
Taguchi method
Surface roughness
Optimization
url http://www.sciencedirect.com/science/article/pii/S2405844021005867
work_keys_str_mv AT pwanggoro advanceddesignandmanufacturingofcustomorthoticsinsolesbasedonhybridtaguchiresponsesurfacemethod
AT bbawono advanceddesignandmanufacturingofcustomorthoticsinsolesbasedonhybridtaguchiresponsesurfacemethod
AT jjamari advanceddesignandmanufacturingofcustomorthoticsinsolesbasedonhybridtaguchiresponsesurfacemethod
AT mtauviqirrahman advanceddesignandmanufacturingofcustomorthoticsinsolesbasedonhybridtaguchiresponsesurfacemethod
AT apbayuseno advanceddesignandmanufacturingofcustomorthoticsinsolesbasedonhybridtaguchiresponsesurfacemethod