| 大型非球曲面光学零件步长伸缩双圆弧插补技术研究 |
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| 引用本文： | 刘启东,徐春广.大型非球曲面光学零件步长伸缩双圆弧插补技术研究[J].航空精密制造技术,2005,41(6):8-10. |
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| 作者姓名： | 刘启东 徐春广 |
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| 作者单位： | 北京理工大学机械与车辆工程学院,北京,100081 |
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| 摘 要： | 提出了一种适用于非球曲面光学零件数控加工的“步长伸缩双圆弧插补”的插补算法,采用转角平分法在非圆曲线两相邻节点之间构造两相切圆弧进行拟合。该算法可根据加工精度要求自动调节插补步长,能在满足加工精度的要求下获得最少的拟合圆弧段,从而提高了加工效率,且计算相对简单。
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| 关 键 词： | 双圆弧拟合 数控加工 编程误差 非球曲面 |
| 文章编号： | 1003-5451(2005)06-0008-03 |
| 修稿时间： | 2004年11月24 |
Study of Variable-step-double-arc Interpolation for Large Aspheric Optical Parts |
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| LIU Qi-dong,XU Chun-guang.Study of Variable-step-double-arc Interpolation for Large Aspheric Optical Parts[J].Aviation Precision Manufacturing Technology,2005,41(6):8-10. |
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| Authors: | LIU Qi-dong XU Chun-guang |
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| Abstract: | A kind of variable-step-double-arc interpolation for aspheric optical parts is introduced.Two tangent arcs fitting the aspheric curve between two vicinity nodes are constructed.The algorithm can adjust step by the machining precision.The number of segments of fitting arc is reduced greatly using this algorithm under the satisfied precision demands.It improves the machining efficiency and the algorithm is easy. |
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| Keywords: | double-arc fitting NC-machining programming error aspheric curve |
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