Investigation Mechanism of V-Ring Indenter Geometry in Fine-Blanking Process

Sutasn Thipprakmas; Masahiko Jin

doi:10.4028/www.scientific.net/KEM.410-411.305

Paper Titles

Optimisation of the Stamping Processes for a Drawn-Part Made of Aluminium
p.271

Stamping of Titanium Sheets
p.279

Investigation of the High Strength Steel Al-Si Coating during Hot Stamping Operations
p.289

Interlaboratory Comparison of Forming Limit Curves for Hot Stamping of High Strength Steels
p.297

Investigation Mechanism of V-Ring Indenter Geometry in Fine-Blanking Process
p.305

Development of the Hot Gas Bulging Process for Aluminium Alloy Tube Using Resistance Heating
p.315

Investigations on Three-Roll Bending of Plain Tubular Components
p.325

Investigation of Die Corner Filling in Hydroforming of Cylindrical Stepped Tubes Using Finite Element Simulation and Experiment
p.335

Incremental Sheet Forming Analysed by Tensile Tests
p.347

HomeKey Engineering MaterialsKey Engineering Materials Vols. 410-411Investigation Mechanism of V-Ring Indenter...

Investigation Mechanism of V-Ring Indenter Geometry in Fine-Blanking Process

Abstract:

The V-ring indenter geometry (angle, height and position) was investigated by using the finite element method (FEM) to theoretically clarify the mechanism and its action in the fine-blanking process. The FEM simulation results indicate that very small or very large V-ring indenter angles, heights, and positions cause difficulty in the rotation of the material-flow and that the hydrostatic pressure is generated with great difficulty in the blanked material; therefore, crack formation occurs easily. The application of a suitable V-ring indenter angle, height, and position significantly suppresses the formation of rotating flow, which results in increased hydrostatic pressure, and crack formation is consequently prevented.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Key Engineering Materials (Volumes 410-411)

Pages:

305-312

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.410-411.305

Citation:

Cite this paper

Online since:

March 2009

Authors:

Sutasn Thipprakmas, Masahiko Jin

Keywords:

Blanking, Fine Blanking, Finite Element Model (FEM), V-Ring Indenter

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] K. Lange, F. Birzer, P. Hofel, A. Mukhoty, and H. Singer: Cold Forming and Fineblanking ( Edelstahlwerke Buderus AG, Feintool AG Lyss 1997).

Google Scholar

[2] T. Nakagawa: Fine blanking (The Nikkan kogyo shinbun, LTD., Tokyo, 1998). (in Japanese).

Google Scholar

[3] F. Birzre: Forming and fineblanking (Verl. Moderne Industrie 1997).

Google Scholar

[4] S. Thipprakmas: Finite-element analysis of V-ring indenter mechanism in fine-blanking process, Mater. Design. Mater. Design. Vol. 30 (2009), pp.526-531.

DOI: 10.1016/j.matdes.2008.05.072

Google Scholar

[5] T. S. Kwak, Y. J. Kim, M. K. Seo and W. B. Bae: The effect of V-ring indenter on the sheared surface in the fine-blanking process of pawl, J. Mater. Process. Tech. Vol. 143-144 (2003), p.656661.

DOI: 10.1016/s0924-0136(03)00311-x

Google Scholar

[6] S. Thipprakmas, M. Jin and M. Murakawa: An investigation of material flow analysis in fineblanking process, J. Mater. Process. Tech. Vol. 192-193 (2007), pp.237-242.

DOI: 10.1016/j.jmatprotec.2007.04.065

Google Scholar

[7] S. Thipprakmas, M. Jin, K. Tomokazu, Y. Katsuhiro and M. Murakawa: Prediction of Fineblanked surface characteristics using the finite element method (FEM), J. Mater. Process. Tech. Vol. 198 (2008), pp.391-398.

DOI: 10.1016/j.jmatprotec.2007.07.027

Google Scholar

[8] J.R. Rice and D.M. Tracy: On the ductile enlargement of voids in triaxial stress fields,.J. Mech. Phys. Solids. (1969), pp.201-217.

DOI: 10.1016/0022-5096(69)90033-7

Google Scholar

[9] S. Thipprakmas: Finite-element analysis of the effect of the V-ring indenter height in fineblanking process, Proceedings of the 8 th Asia-Pacific Conference on Materials Processing, 2008, pp.945-950.

Google Scholar

[10] Schuler GmbH: Metal Forming Handbook (Springer-Verlag Berlin Heidelberg 1998).

Google Scholar