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izvor podataka: crosbi

Cutting disturbances influenced by variations in contact surface geometry (CROSBI ID 157601)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Stoić, Antun ; Pusavec, Franci ; Kopač, Janez Cutting disturbances influenced by variations in contact surface geometry // Machining science and technology, 13 (2009), 4; 516-528

Podaci o odgovornosti

Stoić, Antun ; Pusavec, Franci ; Kopač, Janez

engleski

Cutting disturbances influenced by variations in contact surface geometry

The significance of cutting disturbances appearing in hard turning process case is shifting the process in dynamically very affected one. Therefore in this paper, as an objective, the turning process is evaluated by radial force variation analysis, as a function of depth of cut, tool nose radius and effective lead edge angle, through static and dynamic indicators. Tool/workpiece contact zone is in the case of hard turning, mostly limited within tool nose radius region. Therefore in this paper, geometry of the tool/workpiece contact line is analyzed. The depth of cut is calculated as a geometric difference of prior and instantaneous tool pass profile. The calculated values of the depth of cut are time dependant, and can vary by 60%. Various process monitoring techniques have been used to identify and confirm these variations as well as quantify the level of process stability. The obtained results confirm the assumption that effective lead edge angle and radial force are influenced by depth of cut, feed rate and tool nose radius. Additionally, it is shown that low values of depth of cut and prior pass machined surface valleys geometry are shifting the hard turning process on a dynamically more sensitive level if comparing to soft machining.

hard turning; disturbances; dynamic properties; depth of cut; radial force; vibration

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Podaci o izdanju

13 (4)

2009.

516-528

objavljeno

1091-0344

Povezanost rada

Strojarstvo

Indeksiranost