铝合金球面薄壁件激光辅助剪切旋压成形实验

doi:10.16183/j.cnki.jsjtu.2022.166

上海交通大学学报 ›› 2023, Vol. 57 ›› Issue (10): 1337-1345.doi: 10.16183/j.cnki.jsjtu.2022.166

所属专题：《上海交通大学学报》2023年“机械与动力工程”专题

铝合金球面薄壁件激光辅助剪切旋压成形实验

冉津宇¹, 王凤琪¹, 于忠奇¹(), 杜陈阳¹, EVSYUKOV S A²

1.上海交通大学上海市复杂薄板结构数字化制造重点实验室,上海 200240
2.莫斯科国立鲍曼技术大学制造技术教研室, 俄罗斯莫斯科 105005

收稿日期:2022-05-16 修回日期:2022-08-08 接受日期:2022-08-16 出版日期:2023-10-28 发布日期:2023-10-31
通讯作者: 于忠奇 E-mail:yuzhq@sjtu.edu.cn
作者简介:冉津宇(2000-),硕士生,研究方向为激光辅助旋压工艺.
基金资助:
国家重点研发计划(2021YFB3400901);国家自然科学基金(52175346);国家自然科学基金(51675333)

Experiment of Laser Assisted Shear Spinning for Aluminum Alloy Spherical Thin-Walled Parts

RAN Jinyu¹, WANG Fengqi¹, YU Zhongqi¹(), DU Chenyang¹, EVSYUKOV S A²

1. Shanghai Key Laboratory of Digital Manufacture for Thin-Walled Structures, Shanghai Jiao Tong University, Shanghai 200240, China
2. Faculty MT6, Bauman Moscow State Technical University, Moscow 105005, Russia

Received:2022-05-16 Revised:2022-08-08 Accepted:2022-08-16 Online:2023-10-28 Published:2023-10-31
Contact: YU Zhongqi E-mail:yuzhq@sjtu.edu.cn

摘要/Abstract

摘要：

热能场是提高构件可成形性和尺寸精度的主要途径.针对传统热源温度波动大的问题,将可控性好的激光热源引入薄板剪切旋压成形中,通过局部加热与局部变形匹配提高构件的可旋性和成形精度.基于现有旋压机搭建激光辅助剪切旋压平台,建立激光热源刚性连接下椭球面构件激光照射点漂移模型,分析激光热场加载最优区域.理论分析表明,对于截面圆半径变化较小的构件,刚性连接的激光热源可实现旋压过程精准加热.基于此,开展铝合金椭球面薄壁件激光辅助剪切旋压试验,结果表明与室温旋压相比,激光辅助剪切旋压可以显著提高难变形材料的可旋性,并明显改善铝合金椭球面薄壁件厚度和贴模度的精度.研究结果证明了所开发试验装置和工艺设计方法的可行性.

关键词: 铝合金, 薄壁件, 激光辅助旋压, 成形性能, 工艺设计

Abstract:

Thermal energy field is the main way to improve the formability and dimensional precision of components in sheet forming. In order to solve the temperature fluctuation of traditional heat sources, a well-controlled laser heat source was introduced into sheet metal shear spinning to improve the spinnability and forming accuracy by matching local deformation with local heating reasonably. Laser-assisted shear spinning facility was built based on the existing spinning machine, and a model of laser irradiation point drift of ellipsoidal components under the rigid connection of laser heat source was established to analyse the optimal region of laser thermal field loading. The theoretical analysis shows that, during laser-assisted spinning, the rigid connection can be deemed as precise heating under the condition of mandrel with small variation of section circle radius. Subsequently, laser-assisted shear spinning tests on the thin-walled aluminum alloy ellipsoidal components were conducted. The results show that, compared with cold spinning, the laser assisted method extends the spinnability of difficult-to-deformation material in shear spinning and significantly improves the precision and thickness of the spun thin-walled components, which verifies the feasibility of the developed test setup and process design method.

Key words: aluminum alloy, thin-walled component, laser assisted spinning, formability, process design

中图分类号:

TG306

冉津宇, 王凤琪, 于忠奇, 杜陈阳, EVSYUKOV S A. 铝合金球面薄壁件激光辅助剪切旋压成形实验[J]. 上海交通大学学报, 2023, 57(10): 1337-1345.

RAN Jinyu, WANG Fengqi, YU Zhongqi, DU Chenyang, EVSYUKOV S A. Experiment of Laser Assisted Shear Spinning for Aluminum Alloy Spherical Thin-Walled Parts[J]. Journal of Shanghai Jiao Tong University, 2023, 57(10): 1337-1345.

图/表 17

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参考文献 19

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温度/℃	比热/(J·g^-1·K^-1)	导热系数/(W·mm^-1·K^-1)
300	1.01	175
350	1.03	178
400	1.06	182
450	1.09	185
500	1.12	188
550	1.15	192
600	1.18	195

材料	初始板厚/mm	旋轮圆角半径/mm	进给比/ (mm·r^-1)	P/W	离焦距离/cm	恒线速度/ (mm·s^-1)	Δx/mm
7075-T6	1.85	5	0.5	1200	11	100	2.2
2024-O	2.32	5	0.5	400	11	200	3.4

铝合金球面薄壁件激光辅助剪切旋压成形实验

Experiment of Laser Assisted Shear Spinning for Aluminum Alloy Spherical Thin-Walled Parts

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