Invar钢模具双曲板材展开方法及软件实现  

Development Method and Software Realization of Invar Alloy Mould Plate With Double Curvature

作　　者：李玉杨 季文 张礼康 郭琪琪 胡勇[2] 黄朝炎 LI Yuyang;JI Wen;ZHANG Likang;GUO Qiqi;HU Yong;HUANG Chaoyan(AVIC Xi’an Aircraft Industry Group Company Ltd.,Xi’an 710089,China;Wuhan University of Technology,Wuhan 430063,China)

机构地区：[1]中航西安飞机工业集团股份有限公司,西安710089 [2]武汉理工大学,武汉430063

出　　处：《航空制造技术》2022年第10期98-103,共6页Aeronautical Manufacturing Technology

摘　　要：Invar钢模具双曲板材的展开精度对工件的准确下料、预成形后的机加工作业量有重要影响。通过研究双曲板材的成形工艺和加工时的变形分布特点,提出了一种基于小三角形的双曲度板材展开方法。将曲面分解为若干板条和小三角形,再对小三角形进行展开、拼接,得到展开形状,其关键在于拼接方法和重叠、间隙的处理。在此基础上开发了展开软件,并进行了实际生产验证。通过对32套模具的121块型板进行展开加工检验,发现该方法加工工件只需要留5~10mm余量,远小于传统展开方法所需的20~40mm的加工余量,可显著减少后续机加工工作量。The unfolding accuracy of Invar alloy mould plate with double curvature has an important influence on the accurate cutting of the workpiece and the amount of machining work after pre-forming.Based on the study of forming process and deformation distribution of hyperbolic sheet,a development method for the plate with double curvature based on small triangle is proposed.The surface is divided into several strips and small triangles,and then the small triangles are unfolded and spliced to get the unfolded shape.The key is the splicing method and the treatment of overlapping and gap.On this basis,the development software is developed and verified in actual production.Based on the development processing of 121 plates in 32 sets of dies,it is found that only 5–10mm allowance is needed for the workpiece processed by this method,which is far less than the 20–40mm allowance required by the traditional development method,which can significantly reduce the subsequent machining workload.

关 键 词：Invar钢模具型板 冷加工成形 曲面展开 展开软件 成形工艺 

分 类 号：V261[航空宇航科学与技术—航空宇航制造工程] TG306[金属学及工艺—金属压力加工]