Abstract
In milling with 5-axis machining center, the attitudes of tool or workpiece are controlled by tilting 2 axes, so the milling can be performed by outer portion of cutting edge having large cutting velocity. Cutting forces under various attitudes in pick-feed milling is predicted by using a cutting model and energy method proposed in previous papers. Displacement of the tool axis in a plane normal to the feed direction is analyzed by using the calculated result of cutting force and finite element model of the ball end mill, and machining error is calculated based on the tool deflection. The Machining error is obtained by considering relationship between cutting edge geometry and machined surface. It is shown that the machining error vary considerably with pickfeed direction of the tool and tool tilting angle.
