Helical Cutter Geometry and Process Conditions in Peripheral Milling: A Mechanistic Framework for Surface Texture Formation

Abstract

Surface texture in peripheral milling emerges from the combined action of cutter kinematics, engagement, force generation, structural response, tool condition, and geometric error. The cutter helix is of particular interest because it distributes an individual cutting edge along the axial direction and consequently introduces a phase difference between axial sections of that edge. This review re-examines published evidence through that geometric–mechanical connection. Rather than reporting new measurements or fitting a universal roughness equation, the paper organizes analytical, numerical, and experimental findings into a causal sequence: helix geometry affects axial engagement and chip-load phase; the resulting load distribution interacts with machine–tool dynamics; the actual tool trajectory then determines the surface texture. Feed per tooth, cutting speed, axial and radial engagement, runout, vibration, and tool wear are treated as interacting variables rather than isolated predictors. A literature-derived functional framework is formulated to show where these variables enter the surface-generation process and which relationships still require experimental calibration. The review therefore serves as a mechanistic synthesis and as a design basis for a future controlled study, not as a validated predictive model.