ZHONG Liuchun,CHEN Lianghao,ZHU Zhiqiang.Automatic Recognition Extraction and Automatic Programming Method for Engraving Features of Aviation Skin Parts[J].Plating & Finishing,2022,(6):11-15.[doi:10.3969/j.issn.1001-3849.2022.06.003]
航空蒙皮类零件刻型特征自动识别提取与自动编程方法
- Title:
- Automatic Recognition Extraction and Automatic Programming Method for Engraving Features of Aviation Skin Parts
- 分类号:
- TQ153
- 文献标志码:
- A
- 摘要:
- 目前激光刻型技术在国内航空蒙皮类零件化铣加工中已得到初步应用,激光刻型的重要步骤之一是提取蒙皮零件的刻型线进行刻型编程。通过现有 CAD 软件的基础功能手动提取刻型线和编程,无论效率或质量均已不能满足现代加工制造要求,给后续工艺生产带来了巨大挑战。针对航空蒙皮类零件刻型线的自动提取和自动编程的需要,提出一种基于蒙皮零件模型特征识别提取刻型线并自动生成刻型刀路的方法。首先通过计算与基准曲面平行的面提取出加工面,组合加工碎面生成刻型面,然后由刻型面提取轮廓线,接着通过轮廓线在刻型面上平移的方式设置浸蚀余量并生成刻型线,并离散刻型线生成刻型刀路。经由仿真示例测试方法的有效性和可行性。
- Abstract:
- : At present , laser engraving technology has been preliminarily applied in the chemical milling of aviation skin parts in China. One of the important steps of laser engraving is to extract the engraving line of skin parts for engraving programming. But manual extraction of engraving lines and programming through the basic functions of the existing CAD software cannot meet the require ments of modern manufacturing no matter efficiency or quality , which brings great challenges to s ubsequent process production. Aiming at the needs of automatic extraction and automatic programming of aviation skin parts , a method based on feature recognition of skin parts model is proposed to extract the profile line and generate the tool path automatically. Firstly , the machining surface is extracted by calculating the surface parallel to the reference surface , and the machined broken surface is combined to generate the engraving surface. Then , the profile line is extracted from the engraving surface and the etching amount is set and the engraving line is generated by the translation of the profile line on the engraving surface. Finally , tool path is generated by discrete the engraving line. The validity and feasibility of the method were tested through examples.
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备注/Memo
收稿日期: 2022-02-15 修回日期: 2022-03-08 作者简介: 钟柳春( 1987 —), 女, 硕士, email : zhongliuchun@topnc.com.cn 通信作者: 朱志强( 1990 —), 男, 硕士, email : zhuzhiqiang@topnc.com.cn