DR B R AMBEDKAR NATIONAL INSTITUTE OF TECHNOLOGY JALANDHAR-144027, INDIA DEPARTMENT OF INDUSTRIAL AND PRODUCTION ENGINEERING 7 th INTERNATIONAL CONFERENCE ON PRODUCTION AND INDUSTRIAL ENGINEERING (CPIE-2023) 1 EFFECT OF CUTTING PARAMETRES ON CUTTING FORCES OBTAINED BY A MECHANISTIC APPROACH IN BALL END MILLING PROCESS Mekentichi Sifeddine 1 , Benmohammed Brahim 2 1-2 Product Research Laboratory (LRP) University Batna 2 - Mostefa Benboulaid, Faculty of Technology, Mechanical Engineering Department, 53 Route de Constantine, Fésdis, Batna 05078, Algeria. 1 s.mekentichi@univ-batna2.dz, 2 b.benmohammed@univ-batna2.dz ABSTRACT The study examines the impact of cutting forces on ball end milling, an important factor that affects machining performance, surface quality, and tool life. By using the mechanistic approach, a mathematical modeling method that considers the physics of the cutting process, the cutting forces generated by the interaction between the cutting tool and the work piece during the machining process could be predicted and analyzed. The cutting force models used in the mechanistic approach consider cutting geometry, tool-work piece contact, and deformation of the chip. The study's findings indicate that an understanding of cutting forces in ball end milling is essential for improving machining efficiency and product quality, especially when varying cutting conditions. Overall, this research provides valuable insights into the crucial role that cutting forces play in ball end milling, and highlights the need for further investigation into this area to continue to improve machining processes. NOMENCLATURE A: Chip section (mm 2 ) 1 : Chip thickness (mm) : Chip width (mm) b: Axial depth of cut (mm) : Feed per tooth (mm/tooth) D: Cutting tool diameter (mm) k′: Axial immersion angle (°) φ: Rotation angle of the tool (°) : Specific cutting force (N/m 2 ) : Axial specific cutting force coefficient (N/m 2 ) : Tangential specific cutting force coefficient (N/m 2 ) : Normal specific cutting force coefficient (N/m 2 ) : Axial force component (N) : Tangential force component (N) : Normal force component (N) F: Resultant force (N) 1. INTRODUCTION In ball end milling cutting forces have a significant impact on the quality of the machined surface, cutting performance, and tool life. The mechanistic approach is a widely used mathematical modeling method to predict cutting forces in milling processes. This approach considers the interaction between the cutting tool and the work piece, as well as the effects of cutting parameters such as feed rate and work piece material properties. Recent studies have focused on developing models to predict cutting forces in various milling processes. For instance, [7] developed a mechanistic model to predict cutting forces in high- speed milling of titanium alloys. The model considers the effects of cutting speed, feed rate,