Article ID Journal Published Year Pages File Type
7176564 Journal of Materials Processing Technology 2018 20 Pages PDF
Abstract
Conventional punches used in tube hydroforming (THF) are hollow to facilitate supply of pressurized fluid to the die cavity. The fabrication of hollow micro-punches for micro-THF which can sustain punch loads presents a challenge. This study proposes different types of micro punch designs that can be used in conjunction with floating based micro-tube hydroforming (THF) die set-up. Finite element analysis was carried out to determine the feasibility of the proposed punch design variants followed by Micro-THF experiments. The experiments were carried out to hydroform Y, T, and bulge shaped parts from SS 304 1 mm and 2 mm tubular blanks. The study has demonstrated that notched punches can effectively be used in micro-THF. The major benefit of using notched punches is that, longer micro-punches with the desired strength can be fabricated with ease using electrical discharge machining (EDM).
Keywords
Related Topics
Physical Sciences and Engineering Engineering Industrial and Manufacturing Engineering
Authors
, ,