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首页> 外文期刊>Journal of Manufacturing Processes >Pose and shape error control in automated machining of fastener holes for composite/metal wing-box assembly
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Pose and shape error control in automated machining of fastener holes for composite/metal wing-box assembly

机译:复合/金属翼箱组件紧固件孔自动加工中的姿势和形状误差控制

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摘要

Composite/metal wing-boxes are hard to drill by the conventional drilling method. In this paper, an automated machine-tool-based machining system equipped with a multifunctional end-effector is developed for helical milling, as well as circular and ellipsoidal dimple drilling of composite/metal wing-boxes. The system constitution, the control system, and the application software of the machining system are demonstrated. In aircraft manufacturing, the out-of-tolerance pose and shape of fastener holes deteriorate an aircraft's strength and fatigue performances. Thus, a multi-sensor information fusion and integration architecture is built for enhanced pose and shape accuracy of machined fastener holes. The relative pose error of the end-effector and an aerostructure is analyzed. A coarse-to-fine control method by the touch probe and LDSs is applied for controlling the error. The fastener holes' shape errors are controlled through the elaborate structure design and multi-sensor-based closedloop motion control of the end-effector. Experiments performed on the machining system show that the positioning errors, hole diameter errors, dimple depth errors, and ellipsoidal dimple shape can fulfill the wing-box assembly requirements.
机译:通过传统的钻孔方法难以钻合复合/金属翼盒。本文开发了一种配备有多功能末端执行器的基于自动化机床的加工系统,用于螺旋铣削,以及复合/金属翼盒的圆形和椭圆形凹坑钻孔。对系统构成,控制系统和加工系统的应用软件进行了说明。在飞机制造中,紧固件孔的耐受性姿势和形状恶化了飞机的强度和疲劳性能。因此,建立了多传感器信息融合和集成架构,用于增强加工的紧固件孔的姿势和形状精度。分析了末端效应器和空气结构的相对姿势误差。触摸探针和LDS的粗良好的控制方法用于控制误差。紧固件孔的形状误差是通过末端效应器的精心结构设计和基于多传感器的闭合运动控制来控制的。在加工系统上进行的实验表明定位误差,孔直径误差,凹陷深度误差和椭圆形凹坑形状可满足机翼箱组件要求。

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