Abstract
In five-axis CNC machine tools, the tool orientation is freely programmable. Taking the angular interpolation into account, the conventional method couples the angular feedrate with the linear one for the linear path interpolation. However, this would lead to discontinuities in angular federate, especially at the block transition point. Aiming at making smoother motion during five-axis machining, this thesis presents a method for the angular feedrate scheduling which is independent of linear feedrate acceleration/deceleration and able to ensure a continuous angular feedrate at the block transition point. Additionally, the method features the intelligence for handling some blocks of special conditions. Simulation results proved that the developed scheduling method could make angular feedrate continuous and reduce the angular acceleration at the block transition point.