TA1板单点渐进成形壁厚变化规律的数值模拟研究  

Numerical simulation of wall thickness variation in single point incremental forming of TA1 sheet

作　　者：郝用兴[1] 杨功正 刘亚辉 范素香[1] HAO Yongxing;YANG Gongzheng;LIU Yahui;FAN Suxiang(North China University of Water Resources and Electric Power,Zhengzhou 450045,CHN)

机构地区：[1]华北水利水电大学,河南郑州450045

出　　处：《制造技术与机床》2022年第1期89-93,共5页Manufacturing Technology & Machine Tool

基　　金：2019年度河南省高等学校重点科研项目(19A460026);华北水利水电大学客座教授基金(4001-40734);河南省科技攻关项目“小型管材三维自由弯曲成形工艺与设备关键技术研究”(212102210347);河南省高校科技创新团队支持计划资助(19IRTSTHN011)。

摘　　要：钛及其合金应用越来越广泛,目前单点渐进成形技术已经开始运用于钛及其合金的成形加工,但仍存在成形件壁厚过度减薄的问题,严重影响了成形件的成形质量。文章以TA1钛合金板材成形方锥形件为研究对象,运用Abaqus有限元仿真软件,依据单一变量原则,分别探究工具头直径、底面边长、板材原始厚度和螺距等工艺参数对成形件平均壁厚减薄率与最大壁厚减薄率的影响规律。结果显示:增大工具头直径,平均壁厚减薄率随之增大,最大壁厚减薄率随之减小;平均壁厚减薄率和最大壁厚减薄率都随着底面边长的增加而增加;板材原始厚度增加,平均壁厚减薄率与最大壁厚减薄率都随之减小;随着螺距的增加,平均壁厚减薄率逐渐减小,最大壁厚减薄率逐渐增大。Titanium and its alloys are increasingly used.At present,single point progressive forming technology has been applied to the forming of titanium and its alloys,but there is still a problem of excessive thinning of the wall thickness of the formed parts,which seriously affects the forming quality of the forming parts.In this paper,the influence of the process parameters such as tool head diameter,bottom edge length,original thickness and pitch on the average wall thickness reduction rate and the maximum wall thickness reduction rate of the forming parts are studied by using Abaqus finite element simulation software and the principle of single variable.The results show that the average wall thickness reduction rate increases with the increase of tool head diameter,and the maximum wall thickness reduction rate decreases;The average wall thickness reduction rate and the maximum wall thickness reduction rate increase with the increase of the bottom edge length;The original thickness of the plate increases,and the average wall thickness reduction rate and the maximum wall thickness reduction rate decrease;With the increase of pitch,the average wall thickness reduction rate decreases gradually,and the maximum wall thickness reduction rate increases gradually.

关 键 词：单点渐进成形 有限元 TA1板材 工艺参数 

分 类 号：TG37[金属学及工艺—金属压力加工] TH16[机械工程—机械制造及自动化]