Author(s):
1. Isak Karabegović, Tehnički fakultet u Bihaću, Federation of Bosnia and Herzegovina , Bosnia and Herzegovina
2. Bekir Novkinić, OS BiH, Federation of Bosnia and Herzegovina , Bosnia and Herzegovina
3. Ermin Husak, Tehnički fakultet u Bihaću, Federation of Bosnia and Herzegovina , Bosnia and Herzegovina
4. Safet Isic, Faculty ofTechnical Engineering, Mostar, Federation of Bosnia and Herzegovina , Bosnia and Herzegovina

Abstract:
The workpiece (processed product) functionality is often conditioned by its production quality. The possibility of evaluation quality of processed surfaces in objects obtained by turning, is determined by roughness of processed surfaces. In this paper, the research of the self-excited vibrations influence on the processed surface roughness by longitudinal turning of three different steels: S355JOG3 (Č. 0562), 9SMn28 (Č. 3990) and C45E (Č. 1531), is presented. In the course of the research, the vibration measurement during the processing of samples and processed surface roughness before and after setting up of self-excited vibrations, was carried out. On the occasion of the occurrence of self-excited vibration (which derived from the workpiece) the most influential factors when processing longitudinal turning, were investigated. In the analysis we used the cutting depth, cutting velocity and cutting feed. The roughness of machined surfaces was also being compared. The reduction of self-excited vibrations during machining process is reflected on the reduction in roughness and thus improve the quality of machined surfaces that is of primary interest to production.

Key words:
self-excited vibrations,surface quality,roughness

Date of abstract submission:
15.01.2013.

Conference:
DEMI 2013

Applied paper from author