| 刀具姿态实时控制的空间圆弧插补研究 |
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| 引用本文： | 李韬,赵东标,刘凯.刀具姿态实时控制的空间圆弧插补研究[J].机械科学与技术(西安),2011(2). |
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| 作者姓名： | 李韬 赵东标 刘凯 |
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| 作者单位： | 南京航空航天大学机电学院; |
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| 基金项目： | 江苏省自然科学基金项目(BK2003005)资助 |
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| 摘 要： | 基于坐标变换原理,平面圆弧插补算法可以扩展到由空间任意三点确定的空间圆弧插补。在此基础上,笔者对传统的固定轴空间圆弧加工进行扩展,给出空间圆弧加工时刀具姿态的实时控制方法和G代码指令格式,以满足机械加工工艺和CNC系统实时控制的要求。在深入分析五轴联动机床的RTCP(旋转刀具中心点)功能建立的基础上,对该类圆弧插补进行实时的非线性误差补偿,得到准确的插补轨迹,方便用户根据零件轮廓和期望的刀具角度进行编程。仿真结果验证了算法的有效性。
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| 关 键 词： | 坐标变换 空间圆弧插补 刀具姿态控制 非线性误差 |
Real-time Control of Cutter Orientation for 3D Circular Arc Interpolation |
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| Li Tao,Zhao Dongbiao,Liu Kai.Real-time Control of Cutter Orientation for 3D Circular Arc Interpolation[J].Mechanical Science and Technology,2011(2). |
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| Authors: | Li Tao Zhao Dongbiao Liu Kai |
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| Affiliation: | Li Tao,Zhao Dongbiao,Liu Kai(College of Mechanical and Electrical Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016) |
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| Abstract: | By means of coordinate transformation,the 2D circular arc interpolation based on time division method is expanded to 3D circular arc interpolation that is defined by three arbitrary points in space coordinate.Based on this interpolation method,we expand 3D circular arc machining of the traditional fixed axis,present a real-time cutter orientation control method,and defines the G-code form,in order to meet the requirement of CNC real time control and mechanical processing technics.On the basis of detailed an... |
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| Keywords: | coordinate transformation 3D circular arc interpolation cutter orientation control non-linear error |
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