A New Tool Wear Examination Model by Least Square Method for Shearing Process of Thin Metal Sheet

[+] Author and Article Information
Zone-Ching Lin

Department of Mechanical Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan, R.O.C.e-mail: zclin@mail.ntust.edu.tw

Dar-Yuan Chang

Department of Mechanical Engineering, De Lin Institute of Technology, Tucheng, Taipei Hsien, Taiwan, R.O.C.e-mail: dyc@dlit.edu.tw

J. Manuf. Sci. Eng 126(2), 395-404 (Jul 08, 2004) (10 pages) doi:10.1115/1.1644551 History: Received August 01, 2003; Online July 08, 2004
Copyright © 2004 by ASME
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Illustration of metal shearing principle
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Schematic diagram of experimental strip
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Photographs of experimental progressive die
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Punch wear examination model
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Schematic diagram of measuring points on punch flank
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Relationship charts between number of shearing strokes and the related indices of Exp.-1
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Relationship charts between punch-die clearance and the related indices at Pos.A of Exp.-2
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Histogram of area loss of Exp.-2
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Photograph of sheared surface punched by ASP60 punch of Exp.-2d
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Histogram of flank area loss of Exp.-3
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Histogram of wear depth of punch top of Exp.-3




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