Design of the free-form coating machining system in reverse engineering

被引：2
|
作者：
Chen, Zhihong [1 ]
Fnag, Hairong [1 ]
Fang, Yuefa [1 ]
机构：
[1] School of Mechanical and Electronic Control Engineering, Beijing Jiaotong University
来源：
Chen, Z. (10116303@bjtu.edu.cn) | 1600年 / Chinese Mechanical Engineering Society卷 / 50期
关键词：
Coating machining; Free-form surface; NURBS; Reverse engineering; Tool setting;
D O I：
10.3901/JME.2014.09.142
中图分类号：
学科分类号：
摘要：
A new profile modeling machining system is presented, which processes the foam coating on the surface of aircraft to be uniform thickness. 840D CNC, a laser sensor which is installed on the spindle and industrial personal computer are employed to form the system. The feature of the free-form surface is sampled and modeled by CAM software to generate continuous micro-line NC program. NURBS is introduced to NC program post-processing to make the machining high-efficiency and smooth. The main idea of program post-processing algorithm is to construct NURBS curves base on letting inflection points be control points and modifying it by changing the control points, instead of fitting a NURBS curve based on letting measured points be data points, which is time-consuming. The laser is used for precise positioning work piece. Finally, experimental results verify the effectiveness of the processing methods. © 2014 Journal of Mechanical Engineering.
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页码：142 / 147
页数：5
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