The Optimized Negative Clearance Value with Reason in ASTM-Gr.D Fine-Blanking with Negative Clearance Blanking

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Abstract:

This paper has established geometry model of the rigid-plastic Finite Element Model (FEM) basing on the foundation of similarity theory. It has simulated and analyzed the material of ASTM-Gr.D used by finite element analysis software of metal plastic DEFORM with different negative clearance values blanking, which obtains the caver of the different negative clearance values with roll-over with sheared zone with punching load. According to the result of simulation, it has made an experiment on the ASTM-Gr.D of 2.0(mm) thickness with the different negative clearance, and obtained samples with sheared well and no burr, which summarized that it could achieve no burr in fine blanking when the values of negative clearances value took -0.1 ~ -0.3mm.

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Periodical:

Advanced Materials Research (Volumes 588-589)

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80-83

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November 2012

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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