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Cutting forces and chip formation revisited based on orthogonal cutting of Scots pine
College of Material Science and Engineering, Nanjing Forestry University, Nanjing.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Wood Science and Engineering.ORCID iD: 0000-0001-7091-6696
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Wood Science and Engineering.ORCID iD: 0000-0002-0145-080x
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Wood Science and Engineering.
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2018 (English)In: Holzforschung, ISSN 0018-3830, E-ISSN 1437-434X, Vol. 73, no 2, p. 131-138Article in journal (Refereed) Published
Abstract [en]

The objective of this study was to understandbetter the cutting forces and chip formation of Scots pine(Pinus sylvestris L.) with different moisture contents (MCs)and machined in different cutting directions. To thatend, an orthogonal cutting experiment was designed,in which Scots pine was intermittently machined usinga tungsten carbide tool to produce chips. The cuttingforces were measured and the chip shapes were quantitativelydescribed. Four conclusions can be drawn: (1)with increasing MC, the average cutting forces initiallydecreased and then stabilized, while the angle betweenthe direction of the main and the resultant force continuouslydecreased. (2) The average cutting forces in the 90°–0° cutting direction were lower than the same forces inthe 90°–90° cutting direction. (3) During machining, thedynamic cutting forces fluctuated less in the 90°–0° case.However, the dynamic feeding forces showed a decreasingtrend in both the 90°–0° and the 90°–90° cases. (4) Theprocess applied produced granule chips and flow chips,while less curly flow chips with a higher radius of curvaturewere more easily produced from samples with highMCs in the 90°–0° cutting direction.

Place, publisher, year, edition, pages
De Gruyter Open, 2018. Vol. 73, no 2, p. 131-138
Keywords [en]
chip formation, cutting direction, cutting forces, moisture content, tungsten carbide cutting tools, wood machining
National Category
Engineering and Technology Other Mechanical Engineering
Research subject
Wood Science and Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-70662DOI: 10.1515/hf-2018-0037ISI: 000457473400001Scopus ID: 2-s2.0-85052992353OAI: oai:DiVA.org:ltu-70662DiVA, id: diva2:1243063
Note

Validerad;2019;Nivå 2;2019-02-22 (inah)

Available from: 2018-08-30 Created: 2018-08-30 Last updated: 2019-02-22Bibliographically approved

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Buck, DietrichEkevad, MatsMarklund, Birger

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