0
Technical Briefs

Progressive Die Strip Layout Optimization for Minimum Unbalanced Moments

[+] Author and Article Information
Serdar Tumkor

Design and Manufacturing Institute, Stevens Institute of Technology, Castle Point on Hudson, Hoboken, NJ 07030stumkor@stevens.edu

Kishore Pochiraju

Design and Manufacturing Institute, Stevens Institute of Technology, Castle Point on Hudson, Hoboken, NJ 07030

J. Manuf. Sci. Eng 132(2), 024502 (Apr 21, 2010) (7 pages) doi:10.1115/1.4001518 History: Received May 13, 2009; Revised March 18, 2010; Published April 21, 2010; Online April 21, 2010

Progressive die stamping is a forming process that uses a series of stamping stations to perform simultaneous operations as the sheet is transported incrementally through the die. Designing of progressive die sets and evaluation of the operation for highly complex workpieces are time consuming and iterative at the early stages in the product design. The progressive die design starts with 3D modeling of the part and continues with process sequence planning and strip layout. The strip layout is usually performed manually by experienced progressive die designers. This process begins with unfolding the part and constructing the required part geometry with a series of forming operations. In this study, the same process steps have been used to automate the progressive die design for a given part and stamping press capacity. Therefore, the strip layout already considers the scrap and press tonnage minimizations. A genetic algorithm is used to optimize the strip working sequence with the objective of minimizing the moment difference between two sides of the die. A moment-optimum strip layout will extend the life expectancy of the die, and the maintenance cost will be lowered, particularly for high production rate components.

FIGURES IN THIS ARTICLE
<>
Copyright © 2010 by American Society of Mechanical Engineers
Topics: Strips , Design , Optimization
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Figure 1

Part chosen for illustrating the torque optimization methodology

Grahic Jump Location
Figure 2

Strip layout design

Grahic Jump Location
Figure 3

Cutting and bending processes

Grahic Jump Location
Figure 4

Two-up strip layout

Grahic Jump Location
Figure 5

Flow chart of genetic algorithm

Grahic Jump Location
Figure 6

Manufacturing restrictions leading to grouping of operations

Grahic Jump Location
Figure 7

Operations requiring sequencing for balanced strip layout

Grahic Jump Location
Figure 8

Crossover of genomes for one-up strip after 360 evaluations

Grahic Jump Location
Figure 9

Optimal sequence of one-up strip layout

Grahic Jump Location
Figure 10

Initial two-up strip layout

Grahic Jump Location
Figure 11

Crossover and the list of genomes for the two-up strip after 1150 evaluations

Grahic Jump Location
Figure 12

Optimum sequence of two-up strip layout

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In