| 5坐标数控加工刀轴矢量规划方法 |
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| 作者姓名： | 姬俊锋 周来水 安鲁陵 张森棠 |
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| 作者单位： | 姬俊锋,周来水,安鲁陵(南京航空航天大学机电学院,南京,210016,中国);张森棠(沈阳黎明航空发动机公司技术中心,沈阳,110043,中国)
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| 摘 要： | 研究了5坐标数控加工中刀轴矢量规划问题,分析了现有刀轴矢量生成方法的缺点,借鉴动画制作中设置关键帧的思想,提出了一种新的全局过渡光滑的刀轴矢量生成方法.首先根据加工零件的几何特征,在满足不发生碰撞干涉的前提下,设置一些关键刀轴矢量,然后采用样条函数对这些刀轴矢量进行插值.在生成刀位文件的过程中,通过将曲面上的参数与样条函数的自变量进行某种映射,从而得到样条函数值,并以此值作为刀位点的刀轴矢量.加工实例表明,该方法实现了全局刀轴矢量的光滑过渡,实现了转动速度以及加速度的连续.该方法能够避免因刀轴矢量突变而引起的机床震动,提高了零件的加工质量.
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| 关 键 词： | 计算机辅助制造 数控加工 刀具 5坐标 |
PLANNING METHOD OF TOOL ORIENTATION IN FIVE-AXIS NC MACHINING |
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| Authors: | Ji Junfeng Zhou Laishui An Luling Zhang Sentang |
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| Institution: | 1. College of Mechanical & Electrical Engineering;NUAA;29 Yudao Street;Nanjing;210016;P. R. China;2. Technical Center;Shenyang Liming Aero-Engine Group Corporation Ltd.;Shenyang;110043;P. R. China |
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| Abstract: | The planning method of tool orientation in the five-axis NC machining is studied. The problem of the existing method is analyzed and a new method for generating the global smoothing tool orientation is proposed by introducing the key frame idea in the animation-making. According to the feature of the part, several key tool orientations are set without interference between the tool and the part. Then, these key tool orientations are interpolated by the spline function. By mapping the surface parameter to the... |
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| Keywords: | computer aided mamufacturing NC machining tools five-axis |
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