金属板材大深宽比微沟槽特征辊压成形工艺分析  

Analysis of Roll Forming Process of Sheet Metal with Large Aspect Ratio Microgrooves Feature

作　　者：李廷[1] 郑洁霁[1] 沈建明[1] 张春苗[1] 张金美[1] LI Ting;ZHENG Jieji;SHEN Jianming;ZHANG Chunmiao;ZHANG Jinmei(Jiaxing Key Laboratory of Aero Engine Key Component Manufacturing Technology,Jiaxing Vocational&Technical College,Jiaxing 314036,Zhejiang,China)

机构地区：[1]嘉兴职业技术学院嘉兴市航空发动机关键零部件制造技术重点实验室,浙江嘉兴314036

出　　处：《机械科学与技术》2024年第4期674-680,共7页Mechanical Science and Technology for Aerospace Engineering

基　　金：嘉兴职业技术学院重点科研项目(jzyz202404);浙江省高职教育“十四五”第一批教学改革项目(jg20230341);浙江省省级课程思政示范课(浙教函〔2022〕51号)。

摘　　要：提出一种新型的辊压成形的工艺,对主辅成形辊轮的轮廓设计提出新的设计思路,并对0.1 mm的厚度TA1钛板微沟槽(深度2.5 mm,深宽比86.2%)进行辊压成形的试验,将最大减薄率、最大深度偏差作为评价指标,验证工艺的合理性与科学性。结果表明:辅助成形辊轮在满足挠度(<0.02 mm)的前提下,应尽可能减少辅助成形辊轮的特征数,使其在辊压过程中板材折弯变形而非拉延,其最大减薄率为小于0.4%,深度偏度小于0.5%,配合冲压模具可以对大深宽比的微沟槽成形,而不受拔模角度的影响,此新型成形工艺可以促进金属板材微沟槽产品的产业化。A new type of roll forming process is proposed,and a new design idea is proposed for the contour design of the main and auxiliary forming rollers,and the micro groove of TA1 titanium plate with a thickness of 0.1 mm(a depth of 2.5 mm,an aspect ratio of 86.2%).The roll forming test was carried out,and the maximum thinning rate and the maximum depth deviation were used as the evaluation indicators to verify the rationality and scientificity of the process.The results show that under the satisfying the deflection(<0.02 mm)of the auxiliary forming roller,the number of features of the auxiliary forming roller should be reduced as much as possible,so that the sheet is bent instead of drawing during the rolling of sheet metal,and its maximum thinning rate is less than 0.4%,and the depth deviation is less than 0.5%.With the stamping die,the micro grooves with large aspect ratio can be formed without the influence of the draft angle.This new forming process can promote the production of sheet metal micro-grooves.

关 键 词：辊压 成形辊轮 减薄率 深度偏差 微沟槽 

分 类 号：TG306[金属学及工艺—金属压力加工]