蒙皮镜像加工误差实时补偿优化方法研究

吴子腾; 张立强; 杨青平; 曹珍珍; 钟柳春

doi:10.13433/j.cnki.1003-8728.20200620

蒙皮镜像加工误差实时补偿优化方法研究

doi: 10.13433/j.cnki.1003-8728.20200620

1.
上海工程技术大学机械与汽车工程学院, 上海 201620
2.
成都永峰科技有限公司, 成都 610511
3.
上海拓璞数控科技股份有限公司, 上海 200241

基金项目:

国家自然科学基金项目 51775328

详细信息

作者简介:
吴子腾(1997-), 硕士研究生, 研究方向为航空航天智能制造与先进工艺, 1137463072@qq.com

通讯作者:
张立强, 教授, 硕士生导师, zhanglq@sues.edu.cn

中图分类号: TH161⁺.5;V261.99
计量
- 文章访问数: 114
- HTML全文浏览量: 58
- PDF下载量: 12
- 被引次数: 0
出版历程
- 收稿日期: 2021-06-07
- 刊出日期: 2023-04-25

Study on Optimization Method of Skin Error in Mirror Machining via Real-time Compensation

1.
School of Mechanical and Automotive Engineering, Shanghai University of Engineering Science, Shanghai 201620, China
2.
Chengdu Yongfeng Technology Company Limited, Chengdu 610511, China
3.
Shanghai TOP Numerical Control Technology Co., Ltd., Shanghai 200241, China

摘要

摘要: 针对传统的飞机蒙皮镜像加工误差补偿方法收敛速度慢, 在大进给高速加工中很难完成较好的补偿效果的问题, 提出了一种蒙皮镜像加工误差实时补偿优化方法。该方法基于双点弦截法, 借助超声波测厚仪前两次获得的蒙皮壁厚与程序切削深度, 计算下一点的补偿值, 并通过控制镜像铣补偿轴运动实现加工误差补偿, 有效的提升了飞机蒙皮镜像铣的补偿效果, 减小了加工误差。最后通过有限元仿真和试验证明了该方法的优越性, 最大加工误差降低了41.67%, 总体加工误差降低了41.96%。
- 飞机蒙皮 /
- 镜像铣 /
- 双点弦截法 /
- 误差补偿
Abstract: Aiming at the traditional error compensation method for aircraft skin in mirror machining has slow convergence speed and is difficult to achieve good compensation effect in large feed high-speed machining, a real-time compensation optimization method for skin error in mirror machining is proposed. Based on the two-point chord section method, with the help of the skin wall thickness and program cutting depth obtained by the ultrasonic thickness gauge twice before, the compensation value of the next point is calculated, and the machining error compensation is realized by controlling the motion of the compensation axis in mirror machining, which effectively improves the compensation effect of the aircraft skin in mirror milling and reduces the machining error. Finally, the superiority of this method is proved by using the finite element simulation and experiment. The maximum machining error is reduced by 41.67%, and the overall machining error is reduced by 41.96%.
- aircraft skin /
- mirror milling /
- double point chord section method /
- error compensation

HTML全文

图 1 镜像铣削系统

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图 2 支撑侧

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图 3 实时补偿逻辑关系

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图 4 薄壁件加工中的变形

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图 5 加工迭代补偿过程

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图 6 飞机蒙皮试验件数学模型

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图 7 支撑力测量

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图 8 加工误差分析测量点

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图 9 加工误差迭代补偿仿真流程图

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图 10 加工变形有限元仿真结果

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图 11 仿真误差结果

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图 12 加工现场

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图 13 加工试验件槽特征

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图 14 加工误差对比

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表 1 精加工参数

参数	数值	参数	数值
转速	8 000 r/min	刀具直径	20 mm
进给	1 500 mm/min	刀具刃数	2
切削宽度	12 mm	刀具螺旋角	0
切削深度	0.5 mm	浮动支撑力	75 N
目标壁厚	1.5 mm	水压	250 kPa

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参考文献(20)

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