An Investigation of Punch Radius and Clearance Effects on the Sheet Metal Blanking Process

Year 2022, Volume: 6 Issue: 4, 309 - 316, 31.12.2022

Onur Çavuşoğlu

https://doi.org/10.30939/ijastech..1190699

Abstract

In this study, the effects of punch edge radius and blanking clearance on product quality and blanking process in blanking of AISI 304 stainless steel sheet were investigated by using the fi-nite element analysis method. The blanking analyzes were performed at four different punch tip radii (0.01, 0.25, 0.5, 1 mm) and three different blanking clearance (1 %, 5%, 10%). As a result of the analysis, rollover, burr length increased, smooth sheared / fractured surface ratio and blanking force decreased with the increase in blanking clearance. Depending on the increase in the amount of punch tip radius, the blanking force, and burr length also increased, and the smooth sheared / fractured surface ratio decreased compared to the blanking process with flat punches.

Keywords

Sheet metal blanking, Clearance, Punch radius, Blanking force, Burr, sheet metal forming

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