A novel flexible-structured saw blade for bone cutting: reducing ploughing and promoting chip evacuation

Wang, Han; Satake, Urara; Enomoto, Toshiyuki

doi:https://doi.org/10.1016/j.jmatprotec.2025.119000

A novel flexible-structured saw blade for bone cutting: reducing ploughing and promoting chip evacuation

Wang, Han; Satake, Urara; Enomoto, Toshiyuki

Journal of Materials Processing Technology, 2025, 344, 119000

アクセス数:12件（2025-11-18 20:48 集計）

固定URL: https://hdl.handle.net/11094/102857

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タイトル	A novel flexible-structured saw blade for bone cutting: reducing ploughing and promoting chip evacuation
著者	著者名 Wang, Han
	NRID 1000070828409 1000070828409 ORCID 0009-0009-3410-5728 0009-0009-3410-5728 researchmap permalink su0413 su0413 Scopus Author ID 37102491700 37102491700 著者名 Satake, Urara
	NRID 1000020403149 1000020403149 researchmap permalink read0076938 read0076938 Scopus Author ID 55702379200 55702379200 著者名 Enomoto, Toshiyuki
キーワード等	Bone cutting
	Chip evacuation
	Flexible-structured blade
	Passive vibration-assisted cutting
	Ploughing force reduction
内容	Wang H., Satake U., Enomoto T.. A novel flexible-structured saw blade for bone cutting: reducing ploughing and promoting chip evacuation. Journal of Materials Processing Technology 344, 119000 (2025); https://doi.org/10.1016/j.jmatprotec.2025.119000.
抄録	Oscillating bone sawing is widely employed in orthopedic surgery due to its ability to achieve precise bone resection with minimal damage to surrounding soft tissues. However, conventional saw blades with large negative rake angles often induce excessive ploughing forces, elevated temperatures, poor chip evacuation, accelerated tooth tip wear, and crack formation in bone tissue. While trajectory and vibration-assisted strategies have been explored, their reliance on complex mechanical systems limits clinical adoption. In this study, a novel saw blade with an embedded flexible structure is proposed, which passively adjusts the depth of cut through elastic deformation of the flexible structure. This design offers two key advantages: (1) when cutting with a negative rake face, the flexible tooth adaptively reduces the actual depth of cut, thereby reducing ploughing forces; and (2) when cutting with a positive rake face, periodic elastic deformation induces passive low-frequency vibrations, promoting shear crack formation and transforming continuous, spiral-like chips into fine, needle-like fragments, thereby improving chip evacuation. Multi-tooth sawing experiments confirmed that the proposed blade reduced sawing forces by 56.4 % in the feed direction and 36.7 % in the oscillation direction, suppressed peak cutting temperature to 43.3 °C (below the 47 °C threshold for cell damage), and significantly decreased tooth tip wear and groove wall cracking. These results demonstrate the effectiveness of the proposed structure as a compact, mechanically simple solution that complements motion-based strategies, enhancing cutting performance and adaptability in bone cutting applications.
出版者	Elsevier Ltd
収録物名	Journal of Materials Processing Technology
巻(号)	344
ページ	119000
刊行年月	2025-10-01
言語	英語
ハンドルURL	https://hdl.handle.net/11094/102857
PISSN	09240136
関連情報 (isIdenticalTo)	DOI (出版社版) https://doi.org/10.1016/j.jmatprotec.2025.119000
アクセス権	open access
権利情報	This article is licensed under a Creative Commons Attribution 4.0 International License.
出版タイプ	Version of Record
カテゴリ	学術雑誌論文 Journal Article

資源タイプ	学術雑誌論文
ローカル資源タイプ	学術雑誌論文
DCMI資源タイプ	text
DCTERMS.bibliographicCitation	Journal of Materials Processing Technology. 2025, 344, p. 119000
DC.title	A novel flexible-structured saw blade for bone cutting: reducing ploughing and promoting chip evacuation
DC.creator	Wang, Han
	Satake, Urara
	Enomoto, Toshiyuki
DC.publisher	Elsevier Ltd
DC.language' scheme='DCTERMS.RFC1766	英語
DC.type' scheme='DCTERMS.DCMIType	text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2025-10-01
DC.identifier	https://doi.org/10.1016/j.jmatprotec.2025.119000
DC.subject	Bone cutting
	Chip evacuation
	Flexible-structured blade
	Passive vibration-assisted cutting
	Ploughing force reduction
DC.description	Wang H., Satake U., Enomoto T.. A novel flexible-structured saw blade for bone cutting: reducing ploughing and promoting chip evacuation. Journal of Materials Processing Technology 344, 119000 (2025); https://doi.org/10.1016/j.jmatprotec.2025.119000.
DCTERMS.abstract	Oscillating bone sawing is widely employed in orthopedic surgery due to its ability to achieve precise bone resection with minimal damage to surrounding soft tissues. However, conventional saw blades with large negative rake angles often induce excessive ploughing forces, elevated temperatures, poor chip evacuation, accelerated tooth tip wear, and crack formation in bone tissue. While trajectory and vibration-assisted strategies have been explored, their reliance on complex mechanical systems limits clinical adoption. In this study, a novel saw blade with an embedded flexible structure is proposed, which passively adjusts the depth of cut through elastic deformation of the flexible structure. This design offers two key advantages: (1) when cutting with a negative rake face, the flexible tooth adaptively reduces the actual depth of cut, thereby reducing ploughing forces; and (2) when cutting with a positive rake face, periodic elastic deformation induces passive low-frequency vibrations, promoting shear crack formation and transforming continuous, spiral-like chips into fine, needle-like fragments, thereby improving chip evacuation. Multi-tooth sawing experiments confirmed that the proposed blade reduced sawing forces by 56.4 % in the feed direction and 36.7 % in the oscillation direction, suppressed peak cutting temperature to 43.3 °C (below the 47 °C threshold for cell damage), and significantly decreased tooth tip wear and groove wall cracking. These results demonstrate the effectiveness of the proposed structure as a compact, mechanically simple solution that complements motion-based strategies, enhancing cutting performance and adaptability in bone cutting applications.
DC.rights	This article is licensed under a Creative Commons Attribution 4.0 International License.
DC.format	102857
citation_title	A novel flexible-structured saw blade for bone cutting: reducing ploughing and promoting chip evacuation
citation_author	Wang, Han
	Satake, Urara
	Enomoto, Toshiyuki
citation_publisher	Elsevier Ltd
citation_language	英語
citation_date	2025-10-01
citation_journal_title	Journal of Materials Processing Technology
citation_volume	344
citation_firstpage	119000
citation_doi	https://doi.org/10.1016/j.jmatprotec.2025.119000
citation_public_url	https://hdl.handle.net/11094/102857

A novel flexible-structured saw blade for bone cutting: reducing ploughing and promoting chip evacuation

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