Reduction of vibrations in blanking by MR dampers

The break through shock during sheet metal blanking operations generates uncontrolled high reverse loads, mechanical vibrations and loud noise that may cause problems such as fatigue cracks in the press components, premature wear in tooling and great discomfort for press operators. In this paper, th...

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Bibliographic Details
Published in:CIRP annals 2010, Vol.59 (1), p.275-278
Main Authors: Ghiotti, A., Regazzo, P., Bruschi, S., Bariani, P.F.
Format: Article
Language:English
Subjects:
Acoustics
Applied sciences
Blanking
Exact sciences and technology
Forming
Fundamental areas of phenomenology (including applications)
Machine components
Mechanical engineering. Machine design
Metals. Metallurgy
Physics
Press forming of metal foils and wires
Production techniques
Sheet metal forming
Springs and dampers
Structural acoustics and vibration
Vibration
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Summary:The break through shock during sheet metal blanking operations generates uncontrolled high reverse loads, mechanical vibrations and loud noise that may cause problems such as fatigue cracks in the press components, premature wear in tooling and great discomfort for press operators. In this paper, the application of magneto-rheological (MR) dampers to reduce the shock response of press systems is considered with the aim of evaluating, through full-scale experiments, feasibility and practicability of their implementation and understanding the potential benefits in comparison with conventional dampers.
ISSN:0007-8506
DOI:10.1016/j.cirp.2010.03.111