Interpolation Algorithm for NURBS Curve with Scheduled Feedrate on Curvature Extreme
- https://doi.org/10.2991/icsmim-15.2016.20How to use a DOI?
- NURBS curve interpolation, Curvature extreme, Scheduling feedrate.
In CNC machining, it is desired to obtain high machining accuracy with high processing velocity as far as possible, however it is difficult to realize, and especially machining NURBS curve with large curvature. Based on scheduled feedrate on curvature of NURBS, a new NURBS curve interpolation algorithm was proposed. First, the curvature extreme of NURBS curve was calculated, and the critical value was defined according to machining dynamical requirements. Second, the NURBS curve was split several sub-segments, feedrate scanning algorithm based on S curve acceleration/deceleration was used to schedule the feedrate within each sub-segments and the connection points between adjacent sub-segments. Last, during real-time interpolation, with the second-order Taylor expansion, the interpolation parameter was computed. The results of interpolation case indicated the proposed method not obtain high interpolation accuracy with high interpolation feedrate, but the interpolation output acceleration and jerk within the machine tool’s dynamical requirements.
- © 2016, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Guo-Shun Ji AU - Wu-Jia Yu AU - Zhi-Ping Chen PY - 2016/01 DA - 2016/01 TI - Interpolation Algorithm for NURBS Curve with Scheduled Feedrate on Curvature Extreme BT - Proceedings of the 2015 4th International Conference on Sensors, Measurement and Intelligent Materials PB - Atlantis Press SP - 103 EP - 107 SN - 2352-538X UR - https://doi.org/10.2991/icsmim-15.2016.20 DO - https://doi.org/10.2991/icsmim-15.2016.20 ID - Ji2016/01 ER -