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首页> 外文会议>International Conference on Intelligent Computing;ICIC 2008 >A Real-Time NURBS Interpolator with Feed RateAdjustment
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A Real-Time NURBS Interpolator with Feed RateAdjustment

机译：具有进给速率调整的实时NURBS内插器

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摘要

When realizing a real-time NURBS curve interpolator in CNC machining with high speed and high accuracy, many practical problems are encountered. Algorithms based on Taylor's expansion are developed for realizing NURBS curve interpolator that takes into account the feed rate adjustment to the curvature radius of NURBS curves. By means of the flexible acceleration/deceleration (ACC/DEC) planning, the velocity profile can be chosen dynamically to meet the requirements of the machining process. In addition, a new strategy based on the geometrical properties of NURBS curves is suggested to predict the deceleration point. Therefore, the process of acceleration and deceleration is so smooth that can satisfy the need of machining tool dynamic properties. This NURBS interpolator has been validated on a CNC system, which improves the machining accuracy for both position and velocity control.
机译：当在数控加工中实现高速，高精度的实时NURBS曲线插补器时，会遇到许多实际问题。开发了基于泰勒展开的算法，以实现NURBS曲线插值器，该插值器考虑了对NURBS曲线曲率半径的进给速度调整。通过灵活的加减速（ACC / DEC）规划，可以动态选择速度曲线，以满足加工过程的要求。此外，提出了一种基于NURBS曲线的几何特性的新策略来预测减速点。因此，加减速过程非常平滑，可以满足加工工具动态特性的需要。该NURBS插补器已经在CNC系统上进行了验证，可以提高位置和速度控制的加工精度。

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