Calculation of Contact Stresses during Titanium Alloy Cutting
| Parent link: | Key Engineering Materials: Scientific Journal Vol. 769 : High Technology: Research and Applications (HTRA 2017).— 2018.— [364-370] |
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| Other Authors: | , , , |
| Summary: | Title screen The paper presents data about distribution of contact stresses on a rake surface and flank-land of a cutter in free orthogonal turning of a disk made from a titanium alloy (Ti-6Al-2Mo-2Cr). On the cutting edge of the bar blade, there is a normal force N[ρ], directed perpendicularly to a transient surface, with a large magnitude of specific linear force q[N r]]=182.6 N/mm, but the tangential force on the cutting edge F[p] is equal to zero. On the rake surface, there are uniformly distributed shear contact stresses with very small magnitude of t=const=25 MPa, irrespective of feed rate, which speaks about plastic character of the contact on the rake surface. The greatest normal contact stress on the rake surface [sigma ][max]=1009 MPa, irrespective of feed rate. The greatest magnitude of normal contact stresses on the flank surface chamfer near the cutting edge [sigma][ [h max]= 3400-2200 MPa confirms the hypothesis about recovery of a transient surface sag after separation of a formed element of a chip, and explains increased wear of the cutting tool on the flank surface at initial time. Normal [sigma ][h] and shear th contact stresses on the flank surface chamfer are essentially diminish with a distance from the cutting edge. It explains working ability of the cutting tool even at very large wear on the flank surface (h[f]]>3 mm). Our experimental data allows calculating the components of cutting force and contact stresses on the rake and flank surfaces of cutting tools during titanium alloy (Ti-6Al-2Mo-2Cr) machining. Режим доступа: по договору с организацией-держателем ресурса |
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2018
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| Online Access: | https://doi.org/10.4028/www.scientific.net/KEM.769.364 |
| Format: | Electronic Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=658655 |