A five-axis numerical control tool path trajectory smoothing method based on minimum differential smooth energy
By constructing a position error tolerance zone and attitude error constraints, a five-axis CNC toolpath trajectory smoothing method was developed, which solved the discontinuity problem at corners in five-axis CNC machining, achieving efficient and stable trajectory smoothing and improving machining efficiency and accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- BEIHANG UNIV
- Filing Date
- 2026-04-09
- Publication Date
- 2026-07-17
AI Technical Summary
In five-axis CNC machining, the tool path is discontinuous at corners, leading to frequent speed reductions and increased vibration. Existing path smoothing methods are computationally complex or lack effective constraints, affecting machining efficiency and accuracy.
By employing a method based on minimum differential smoothing energy, and constructing a position error tolerance band and attitude error constraints, a transition curve for the tool tip position and tool axis direction that meets the second-order geometric continuity requirement is generated, ensuring a smooth transition of the trajectory in the corner region.
It achieves efficient and stable machining within a given error range, reduces curvature peaks, improves interpolation efficiency, avoids abnormal transitions between adjacent segments, and enhances the machining stability and accuracy of the five-axis CNC system.
Smart Images
Figure CN122411286A_ABST