Investigation on Flatness of Shim Rings in Blanking

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Abstract:

Flatness of blanked parts is important as well as the cut edge quality and often becomes worse when blanking the low stiffness parts such as narrow shim rings. In this study, the affecting factors on the flatness of shim rings in conventional blanking were investigated through the experiments varying the ring widths and materials. Flatness was evaluated with the deflection angle. It was found that the shim ring with a smaller width and the material having a larger n value exhibited larger deflection angles. Deformation during blanking was analyzed by FE simulation and the experimental results were explained based on the strain distributions.

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Key Engineering Materials (Volumes 622-623)

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1087-1092

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September 2014

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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[1] G. Fang, P. Zeng, L. Lou, Finite element simulation of the effect of clearance on the forming quality in the blanking process, J. Materials Processing Technology, 122 (2002), pp.249-254.

DOI: 10.1016/s0924-0136(02)00056-0

Google Scholar

[2] S. P. Lo, D. Y. Chang, Y. Y. Lin, Quality prediction model of the sheet blanking process for thin phosphorous bronze, J. Materials Processing Technology, 194 (2007), pp.126-133.

DOI: 10.1016/j.jmatprotec.2007.04.110

Google Scholar

[3] K. Kondo, H. Suzuki, Research on the accuracy of sheared products by different working principles in precision shearing, J. Materials Processing Technology, 56 (1996), pp.70-77.

DOI: 10.1016/0924-0136(95)01822-0

Google Scholar

[4] K. Hirota, Fabrication of micro-billet by sheet extrusion, J. Materials Processing Technology, 191 (2007), pp.283-287.

DOI: 10.1016/j.jmatprotec.2007.03.024

Google Scholar

[5] A. Guidi, Hints on the design of fine-blanked parts-1, Machinery and production engineering, 6 (1972), pp.804-809.

Google Scholar

[6] T. Jimma, F. Sekine, On high speed precision blanking of IC lead-frames using a progressive die, J. Materials Processing Technology, 22 (1990), pp.291-305.

DOI: 10.1016/0924-0136(90)90018-p

Google Scholar

[7] T. Jimma, F. Sekine, A. Sato, Effect of bend-corner of lead on blanking accuracy of IC lead frame, J. Materials Processing Technology, 24 (1990), pp.181-190.

DOI: 10.1016/0924-0136(90)90180-3

Google Scholar