| 三次NURBS曲线轮廓数控加工刀位数据计算 |
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| 引用本文： | 王乾廷,桂贵生,刘全坤. 三次NURBS曲线轮廓数控加工刀位数据计算[J]. 组合机床与自动化加工技术, 2003, 0(6): 19-21 |
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| 作者姓名： | 王乾廷 桂贵生 刘全坤 |
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| 作者单位： | 合肥工业大学,机械与汽车工程学院,安徽,合肥,230009 |
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| 摘 要： | 在给定具体型值点的条件下，通过平方根法计算得NURBS曲线的节点矢量；采用de Boor—Cox递推公式分别计算得一次、二次和三次基函数；构造边界条件反求得控制顶点。构造出三次NURBS曲线的参数方程。采用等距离位移计算得曲线轮廓加工刀位轨迹，为NC代码的生成提供数据。
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| 关 键 词： | NURBS曲线 数控加工 刀位数据 曲线构造 节点矢量 NC代码 |
| 文章编号： | 1001-2265(2003)06-0019-03 |
| 修稿时间： | 2002-12-04 |
NC programming for 3-order NURBS curved profile |
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| WANG Qianting GUI Guisheng LIU Quankun. NC programming for 3-order NURBS curved profile[J]. Modular Machine Tool & Automatic Manufacturing Technique, 2003, 0(6): 19-21 |
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| Authors: | WANG Qianting GUI Guisheng LIU Quankun |
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| Affiliation: | WANG Qianting GUI Guisheng LIU Quankun |
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| Abstract: | Knot vector is calculated by square root method on condition that data points are specified; and linear, conic and cubic basic functions are deduced by de Boor-Cox formula. Boundary conditions are constructed to get the control points and the equation of 3-order NURBS curved profile is acquired. The NC cutting location data of NURBS are obtained by its offset curve, which is the premise of NC code. |
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| Keywords: | NURBS curve NC machining CL data curve constrution |
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