Highly accurate 5-axis flank CNC machining with conical tools
Highly accurate 5-axis flank CNC machining with conical tools
复制标题
使用锥形刀具进行高精度 5 轴侧面 CNC 加工
DOI：
10.1007/s00170-018-2033-7
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发表时间：
2018-07-01
影响因子：
3.4
通讯作者：
Norberto Lopez de Lacalle, Luis
中科院分区：
文献类型：
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作者：
Calleja, Amaia;Bo, Pengbo;Norberto Lopez de Lacalle, Luis
提出了一种五轴侧面数控加工的新方法。给出一组锥形球立铣刀（又名锥形铣刀）作为输入，并返回用户定义公差范围内的侧面铣削路径。允许一个相关的截锥体沿着一般的，双重弯曲的，自由曲面的切向运动的线的空间被探索。这些线是三维空间中圆锥轴的离散位置。样条曲面拟合用于生成直纹曲面，该直纹曲面代表刚性锥形铣刀的单个连续扫描。然后应用基于优化的方法来全局最小化设计表面与锥形包络线之间的误差。铣削模拟通过两个基准工业数据集的物理实验进行验证，与最先进的工业软件相比，显着减少了执行时间，同时保留甚至减少了铣削误差。
A new method for 5-axis flank computer numerically controlled (CNC) machining is proposed. A set of tappered ball-end-mill tools (aka conical milling tools) is given as the input and the flank milling paths within user-defined tolerance are returned. Thespace of lines that admit tangential motion of an associated truncated cone along a general, doubly curved, free-form surface is explored. These lines serve as discrete positions of conical axes in 3D space. Spline surface fitting is used to generate a ruled surface that represents a single continuous sweep of a rigid conical milling tool. An optimization-based approach is then applied to globally minimize the error between the design surface and the conical envelope. The milling simulations are validated with physical experiments on two benchmark industrial datasets, reducing significantly the execution times while preserving or even reducing the milling error when compared to the state-of-the-art industrial software.