Residual stresses modelling in hard turning and its correlation with the cutting forces

• Autorzy: Batalha G. F. , Delijaicov S. , Aguiar J. B. , Bordinassi E. C. , Stipkovic Filho M.
• Języki publikacji: EN

Abstrakty

EN

Purpose: This paper aims to study the cutting parameters influence (cutting speed, feed rate, cutting depth and tool radius nose) on the cutting forces (cutting force, feed rate cutting force and penetration cutting force) as well as on the residual stresses, in conical bearings made of steel DIN 100 CrMn6 hardened (62 HRc), searching correlations between the residual stresses and the cutting forces. Design/methodology/approach: A complete factorial planning was used to establish the correlations. At the same time, the cutting parameters influence in the microstructure of the material and it's correlation with the residual stress was studied. A turning center machine and CBN inserts was employed for the tests. To the cutting force measurements was carried out using a piezoelectric dynamometer. The residual stresses measurements were carried out by X-ray diffractometry. Findings: The penetration cutting force was the most important factor in the residual stress generation, and it was influenced by the feed rate and the cutting depth. A correlation between the cutting depth and the residual stresses was established. The results do not showed any changes in the microstructure of the material, even when the greater cutting parameters were used. Research limitations/implications: The residual stress is one of the major causes of failures in bearings by contact fatigue, keeping this on mind, this work helps the developer to select correct cutting parameters in order to increase the machined workpiece life in service. Originality/value: This work were based on the real components (conical bearings), real cutting conditions and with these results were possible to make greater improvements in the manufacturing and in the quality of the studied parts.

Słowa kluczowe

EN

machining; turning; hard turning; residual stresses

PL

obróbka skrawaniem; toczenie; toczenie na twardo; naprężenia szczątkowe

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2007
• Tom: Vol. 24, nr 1
• Strony: 350--356
• Opis fizyczny: Bibliogr. 29 poz., fot., rys., tab.

Twórcy

autor

Batalha G. F.

autor

Delijaicov S.

autor

Aguiar J. B.

autor

Bordinassi E. C.

autor

Stipkovic Filho M.

• Department of Mechanical Engineering - Faculdade de Engenharia Industrial do Centro Universitário da FEI, Av. Humberto de Alencar Castelo Branco, 3972-09580.901, S. Bernardo do Campo, SP, Brazil,

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