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The development of S-curve acceleration and deceleration (ACC/DEC) algorithms has become important for computer numerical control (CNC) machining in recent decades because it provides smoother feed motions for cutting tools and can thus shorten the machining time, maintain the machining quality, and enhance the tool life. In this study, a quintic feedrate function is developed and applied to realize an S-curve ACC/DEC algorithm with limited values of feedrate, feed acceleration, and feed jerk. This study analyzes the kinematic characteristics of the quintic feedrate function in detail and then develops a systematic scheme to determine the ACC/DEC time by referring to the given feedrate difference, feed acceleration, and feed jerk constrains. Furthermore, several simulations and experiments carried out on a three-axis CNC milling machine demonstrate the feasibility of the approaches developed in this study.

An S-curve Acceleration/Deceleration Design for CNC Machine Tools Using Quintic Feedrate Function