{"title":"Rotary tube flaring using a conical punch with grooves for high forming limit and productivity","authors":"Shohei Kajikawa, Kiwamu Uchida, Takashi Kuboki (1)","doi":"10.1016/j.cirp.2025.04.004","DOIUrl":null,"url":null,"abstract":"<div><div>This paper presents rotary tube flaring using a conical punch with grooves to achieve a high flaring limit and productivity. The grooved punch improves the flaring limit by suppressing bucking because it reduces the axial load as the tube contacts the punch intermittently. The effects of groove size and number on formability were investigated using tubes of aluminium alloy AA1070 and copper alloy C1220. The limit flaring ratio increased by up to 2.8 times compared to that of conventional press forming when the groove size and number were appropriate. The appropriate groove size varied depending on the tube material used.</div></div>","PeriodicalId":55256,"journal":{"name":"Cirp Annals-Manufacturing Technology","volume":"74 1","pages":"Pages 387-391"},"PeriodicalIF":3.2000,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Cirp Annals-Manufacturing Technology","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0007850625000502","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, INDUSTRIAL","Score":null,"Total":0}
引用次数: 0
Abstract
This paper presents rotary tube flaring using a conical punch with grooves to achieve a high flaring limit and productivity. The grooved punch improves the flaring limit by suppressing bucking because it reduces the axial load as the tube contacts the punch intermittently. The effects of groove size and number on formability were investigated using tubes of aluminium alloy AA1070 and copper alloy C1220. The limit flaring ratio increased by up to 2.8 times compared to that of conventional press forming when the groove size and number were appropriate. The appropriate groove size varied depending on the tube material used.
期刊介绍:
CIRP, The International Academy for Production Engineering, was founded in 1951 to promote, by scientific research, the development of all aspects of manufacturing technology covering the optimization, control and management of processes, machines and systems.
This biannual ISI cited journal contains approximately 140 refereed technical and keynote papers. Subject areas covered include:
Assembly, Cutting, Design, Electro-Physical and Chemical Processes, Forming, Abrasive processes, Surfaces, Machines, Production Systems and Organizations, Precision Engineering and Metrology, Life-Cycle Engineering, Microsystems Technology (MST), Nanotechnology.