采用小弯曲半径弯头反向推直与正向推弯的管坯设计方法

中国机械工程

采用小弯曲半径弯头反向推直与正向推弯的管坯设计方法

陈清根1;徐雪峰1;马媛媛2;李玲玲2;赵爽2;徐龙2

1.南昌航空大学航空制造工程学院，南昌，330063
2.中航工业江西洪都航空工业集团有限责任公司，南昌，330024

出版日期:2017-02-10 发布日期:2017-02-07
基金资助:
国家自然科学基金资助项目(51405219);中航工业产学研项目(BA201306321)

Tube Design Method with Small Bend Radius in Elbow Forming Using Reverse Push Straight and Forward Forming Simulation

CHEN Qinggen1;XU Xuefeng1;MA Yuanyuan2;LI Lingling2;ZHAO Shuang2;XU Long2

1.School of Aviation Manufacturing Engineering, Nanchang Hangkong University, Nanchang, 330063
2.AVIC Hongdu Aviation Industry Group, Nanchang, 330024

Online:2017-02-10 Published:2017-02-07

摘要/Abstract

摘要： 采用数值模拟技术对小弯曲半径弯头（1D）进行反向推直以获得弯头推弯成形时管坯的近似尺寸，并进行优化；在此基础上，采用正向成形法对优化管坯进行推弯模拟与试验验证，最终得到较为精确的管坯尺寸。以管径为32mm×1mm的LF2M铝合金管材进行小弯曲半径弯头成形为例，首先对弯头产品尺寸进行反向推直模拟，获得推直管坯尺寸后，进行优化与正向推弯模拟验证，最终对优化的精确管坯进行推弯成形试验，结果显示：通过反向推直与正向推弯模拟相结合获得小弯曲半径弯头推弯成形管坯尺寸的方法具有较高的可靠性，并得到了管径为32mm×1mm的LF2M铝合金管材进行高难推弯成形时的管坯尺寸与成形零件。

关键词: 反向推直模拟, 正向成形模拟, 推弯成形, 管坯设计

Abstract: According to the numerical simulation technology of reverse push straight the approximate and optimized sizes of tubes with small bend radius elbow（1D） were obtained in push-bending forming. The forward push straight method was used to verify the push-bending forming simulations based on the optimized sizes of the tube and finally the accurate sizes were obtained. The forming specification was aluminum alloy tube of LF2M of 32mm×1mm which was adopted to push with small bending radius.First,with the final forming elbow product sizes and in reverse push straight simulation the optimized sizes were obtained，then adopted to verify the forward simulation. Finally,the pushing-bending experiments were based on the final accurate sizes of the tubes and the results show that: by means of the combination of reverse push straight and forward bending simulation, the method of bending the tube blank with small bending radius is of high reliability. And the sizes of tube and forming elbow of LF2M aluminium alloy tube of 32mm×1mm were obtained in process of 1D hard push-bending relative bending radius elbow.

Key words: reverse push straight simulation, forward forming simulation, push-bending, tube design

中图分类号:

TG135. 3

陈清根, 徐雪峰, 马媛媛, 李玲玲, 赵爽, 徐龙. 采用小弯曲半径弯头反向推直与正向推弯的管坯设计方法[J]. 中国机械工程.

CHEN Qinggen, XU Xuefeng, MA Yuanyuan, LI Lingling, ZHAO Shuang, XU Long. Tube Design Method with Small Bend Radius in Elbow Forming Using Reverse Push Straight and Forward Forming Simulation[J]. China Mechanical Engineering.

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