Numerically Controlled Machining of Sculptured Surfaces

雕刻表面的数控加工

• 批准号: 9015851
• 负责人: Robert Jerard
• 金额: $ 14.91万
• 依托单位: University of New Hampshire
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-07-15 至 1995-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9015851&HistoricalAwards=false
• 关键词: Numerically; Controlled; Machining; Sculptured; Surfaces

The goal of this research is to increase the current knowledge base in the field of numerically controlled (NC) machining of sculptured surfaces. This research applies geometric simulation methods to three and five axis sculptured surface tool path generation. Specifically, the following questions are being explored: (1) What are the best algorithms for subdivision of sculptured surfaces into a polygonal representation to be used for NC tool path generation? (2) What is the time/accuracy trade-off in using points versus polygons as a surface representation for NC tool path generation? (3) Can the non-isoparametric tool path planning algorithm developed for three axis machining be extended to the five axis case? (4) Can efficient and accurate geometric models of the volume swept by a five axis tool movement be defined? (5) Can parallel algorithms be applied to the NC tool path planning problem? This project is an interdisciplinary collaboration between the Mechanical Engineering Department at the University of New Hampshire, the Department of Mathematics and Computer Science at Dartmouth College, and an industrial sponsor. It has the potential of greatly improving sculptured surface machining. In practice, it should enhance the production of metal forming dies.

这项研究的目的是增加现有的知识 在数控（NC）加工领域的基础 雕刻的表面 本研究应用几何模拟 三轴和五轴复杂曲面刀具轨迹的生成方法 一代 具体而言，以下问题正在 探索：（1）细分的最佳算法是什么？ 将雕刻曲面转换为多边形表示， NC刀具轨迹生成(2)时间/精度的权衡是什么 在使用点与多边形作为NC的曲面表示时， 刀具轨迹生成(3)非等参刀具路径是否可以 三轴加工规划算法的扩展 五轴的案子吗(4)可以高效准确的几何 由五轴工具运动扫过的体积的模型被定义？ (5)并行算法能否应用于数控刀具路径规划 有什么问题吗 该项目是一个跨学科的合作， 纽约大学机械工程系 汉普郡，数学和计算机科学系， 达特茅斯学院，和一个工业赞助商。 它有可能 极大地改善了雕塑表面加工。 在实际操作中， 应提高金属成形模具的生产。