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TECHNICAL PAPERS

Burr-Free Microblanking Using Piezoelectric Actuator

[+] Author and Article Information
Isamu Aoki, Masahiro Sasada

Department of Mechanical Engineering, Kanagawa University, Rokkakubashi 3-27-1 Kanagawa-ku, Yokohama, 221-8686, Japan

J. Manuf. Sci. Eng 126(4), 653-658 (Feb 04, 2005) (6 pages) doi:10.1115/1.1812775 History: Received December 01, 2003; Revised September 01, 2004; Online February 04, 2005
Copyright © 2004 by ASME
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References

Figures

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Conventional blanking method
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Typical surface of blanked products
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Processes of pushback blanking method. (a) Reciprocating blanking method 1. (b) Counter blanking method 2. (c) Pushback blanking method 4.
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Mechanism of burr-free blanking 5. (a) Half blanking. (b) Pushback. (c) Blanking of residual thickness.
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Typical profile and appearance of burr-free blanked product
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Die set used for verifying success range of burr-free blanking
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Successful range in burr-free blanking for foil (aluminum foil, A1100P): (a) T=200 μm; (b) T=100 μm; (c) T=50 μm.
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Magnifying mechanism II
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Calculation method of displacement piezoelectric element by conversion to thermal expansion
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FEM model of magnifying mechanism: (a) type I; (b) type II.
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Comparison of results of experimental and FEM: (a) generated force; (b) generated displacement.
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Experimental setup for burr-free blanking of foil and element used
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Shearing diagram of step 1 of burr-free blanking of aluminum foil (50 μm thickness)
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Example of blanked product: (a) conventionally blanked product (with burr); (b) burr-free blanked product.
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Die set usable for progressive burr-free blanking

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