| 五轴数控机床综合误差补偿解耦研究 |
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| 引用本文： | 任永强,杨建国.五轴数控机床综合误差补偿解耦研究[J].机械工程学报,2004,40(2):55-59. |
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| 作者姓名： | 任永强 杨建国 |
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| 作者单位： | 上海交通大学机械与动力工程学院,上海,200030 |
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| 基金项目： | 国家自然科学基金(50075054)，高等学校全国优秀博士学位论文专项资金(200131)资助项目 |
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| 摘 要： | 五轴数控机床具有3个移动副和2个转动副,能对复杂曲面实现高精度加工,然而其误差补偿运动却比较复杂,因为其各运动副的误差补偿运动量与刀具和工件间的误差值(位置及方向误差)间存在一定的耦合关系。通过分析五轴机床的运动特点,用齐次坐标变换的方法建立了各运动副坐标系间的变换矩阵。基于小误差补偿运动假设,分析了误差运动和补偿运动间的相互关系,对五轴机床各运动副的位置及方向误差补偿运动进行了解耦,建立了可以进行空间五个误差补偿量计算的数学模型,为五轴机床的误差实时补偿提供了理论基础。
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| 关 键 词： | 热和几何误差 齐次坐标变换 误差补偿模型 解耦 |
| 修稿时间： | 2002年2月6日 |
STUDY ON DEOUPLING OF SYNTHESIS ERROR COMPENSATION FOR A 5-AXIS CNC MACHINE TOOL |
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| Ren Yongqiang Yang Jianguo.STUDY ON DEOUPLING OF SYNTHESIS ERROR COMPENSATION FOR A 5-AXIS CNC MACHINE TOOL[J].Chinese Journal of Mechanical Engineering,2004,40(2):55-59. |
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| Authors: | Ren Yongqiang Yang Jianguo |
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| Affiliation: | Shanghai Jiaotong University |
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| Abstract: | Complex curved face can obtained high precisely on the five-axis machine tool with three translational and two rotational axes. But its error compensation is far more complicated than that of three-axis machine tool because of coupled effects between the joint variables and the position/orientation of the cutting point. adjusting one joint usually results in changes in multiple components in the tool-part relation. Based on the rigid body kinematics with small error assumption and coordinate transformation method, the volumetric error compensation model is created by decoupling the error compensation motions, and the position and orientation compensation values of the joint variables can be obtained finally with the model. |
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| Keywords: | Thermal and geometric errorHomogeneous coordinate transformation Error compensation model Decoupling |
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