Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
Analysis of the machining forces and vibrations in turning with grooving tools
Submission Author:
Milton Polli , PR
Co-Authors:
Amarildo Alves Dias, Milton Polli, Bruno Edson Klipstein
Presenter: Bruno Edson Klipstein
doi://10.26678/ABCM.COBEM2023.COB2023-2364
Abstract
Among current manufacturing processes, machining stands out as one of the main means of production. The turning process is extremely important in the manufacturing of various parts. Vibration, or the phenomenon of self-excited vibrations that occur mainly due to the low dynamic rigidity of the cutting tool or the workpiece, compromises surface finish, dimensional accuracy, and tool life. Wide-channel turning with groove tools offers a significant time gain compared to the use of right or left cutting geometries. However, research addressing the occurrence of regenerative vibrations in this type of process is scarce. This study analyzed the dynamic stability in the turning process with groove tools. Experimental tests were conducted on a CNC lathe, with variations in cutting parameters and workpiece overhang. The material used in the tests was 1045 steel. Machining was performed without cutting fluid using the N123G2-0300-0004-TM 1125 insert. Stability evaluation was based on the analysis of the audio signal and machining forces. The results showed that the lateral deflection of the tool, with the increase in machining forces and feed rate, improves the stability of the process. It was also evident that the reduction in the workpiece overhang contributes to a more stable operation.
Keywords
Turning, grooving tools, Machining forces, Vibrations
