FEM analysis on the influence of rounded tool edge on micro-blanking of thin foil with negative clearance

Shin Hyung Song; Woo Chun Choi

doi:10.1007/s12541-015-0142-x

FEM analysis on the influence of rounded tool edge on micro-blanking of thin foil with negative clearance

Shin Hyung Song, Woo Chun Choi

Graduate School of management of technology

Research output: Contribution to journal › Article

5 Citations (Scopus)

Abstract

This work studies the effects of the tool edge radius in a micro-blanking process with negative clearance by using finite element method. For the study, a simulation model of blanking of AL6061-T6 foil with tools (punch and die) having a large edge radius comparable to the thickness of the foil was prepared. Using the model, micro-blanking process with various tool edge radii are simulated to study the resultant blanking forces and blank quality. From the simulation studies, it is found that a large edge radius of a blanking punch have effect on the blanking forces. Especially, a projecting edge was observed at the edge of the finished blank. This projecting edge is considered to be caused by negative clearance and a large edge radius of a die. Overall summary and discussion on the effect of a rounded tool edge on the blanking force and blank deformation is presented.

Original language	English
Pages (from-to)	1101-1105
Number of pages	5
Journal	International Journal of Precision Engineering and Manufacturing
Volume	16
Issue number	6
DOIs	https://doi.org/10.1007/s12541-015-0142-x
Publication status	Published - 2015 Jun 10

Keywords

Blanking
FEM
Negative clearance
Rounded tool edge

ASJC Scopus subject areas

Electrical and Electronic Engineering
Industrial and Manufacturing Engineering
Mechanical Engineering

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abstract = "This work studies the effects of the tool edge radius in a micro-blanking process with negative clearance by using finite element method. For the study, a simulation model of blanking of AL6061-T6 foil with tools (punch and die) having a large edge radius comparable to the thickness of the foil was prepared. Using the model, micro-blanking process with various tool edge radii are simulated to study the resultant blanking forces and blank quality. From the simulation studies, it is found that a large edge radius of a blanking punch have effect on the blanking forces. Especially, a projecting edge was observed at the edge of the finished blank. This projecting edge is considered to be caused by negative clearance and a large edge radius of a die. Overall summary and discussion on the effect of a rounded tool edge on the blanking force and blank deformation is presented.",

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AU - Choi, Woo Chun

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N2 - This work studies the effects of the tool edge radius in a micro-blanking process with negative clearance by using finite element method. For the study, a simulation model of blanking of AL6061-T6 foil with tools (punch and die) having a large edge radius comparable to the thickness of the foil was prepared. Using the model, micro-blanking process with various tool edge radii are simulated to study the resultant blanking forces and blank quality. From the simulation studies, it is found that a large edge radius of a blanking punch have effect on the blanking forces. Especially, a projecting edge was observed at the edge of the finished blank. This projecting edge is considered to be caused by negative clearance and a large edge radius of a die. Overall summary and discussion on the effect of a rounded tool edge on the blanking force and blank deformation is presented.

AB - This work studies the effects of the tool edge radius in a micro-blanking process with negative clearance by using finite element method. For the study, a simulation model of blanking of AL6061-T6 foil with tools (punch and die) having a large edge radius comparable to the thickness of the foil was prepared. Using the model, micro-blanking process with various tool edge radii are simulated to study the resultant blanking forces and blank quality. From the simulation studies, it is found that a large edge radius of a blanking punch have effect on the blanking forces. Especially, a projecting edge was observed at the edge of the finished blank. This projecting edge is considered to be caused by negative clearance and a large edge radius of a die. Overall summary and discussion on the effect of a rounded tool edge on the blanking force and blank deformation is presented.

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