Abstract
To avoid suffering gouge and transient overshooting in high speed cutting machining,a novel parameterized curve interpolator model with velocity look-ahead algorithm is proposed.Based on a prearrangement step interpolation algorithm for parameterized curves and considering high curvature points,parameterized curve tool path is divided into acceleration segments and deceleration segments by look-ahead algorithm.Under condition of characteristics of acceleration and deceleration stored in control system,deceleration before high curvature points and acceleration after high curvature points are realized in real-time in high speed cutting machining.Based on new parameterized curve interpolator model with velocity look-ahead algorithm,a real cubic spline is machined simulativly.The simulation results show that velocity look-ahead algorithm improves velocity changing more smoothly.
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