PERIPHERAL MILLING CONDITIONS FOR IMPROVED DIMENSIONAL ACCURACY

Peripheral milling with flexible helical cutters is analyzed and model led. The end mill is modelled as a cantilevered beam clamped to the co llet with linear springs. Cutting forces and resulting tool deflection marks on the surface are analytically expressed. It is shown that by proper selection of cutting conditions, the material removal rate can be increased significantly without sacrificing the dimensional accurac y of the finished product. A method of identifying optimal feedrate an d width of cut for given cutter dimensions and cutting constants is pr esented with experimental verification.