Automation of strip-layout design for sheet metal work on progressive die

Strip Layout design plays a key role in multi-station progressive die design, and the traditional method of designing layout is complicated, timewasting. To design layout of progressive die with PDW is efficient, easy to be modified. In this paper, the process of building layout is discussed. First of all, sheet metal should be pretreated to build immediate stage, and the suitable method can be chosen to unfold sheet metal according the configuration feature of the product. Secondly, it needs to build the assembly structure of progressive die, called initialization. Thirdly, with tools including Blank Generator, Blank Layout, Scrap Design, and Strip Layout to finish layout design. In the end, the paper takes a sheet metal for instance to finish the layout. The method of designing layout with PDW improves the traditional method’s deficiencies, and improves the efficiency greatly.

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Computer-Aided Process Planning of Strip Layout in Progressive Dies

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.110-116.5106 ◽

2011 ◽

Vol 110-116 ◽

pp. 5106-5110

Author(s):

Alan C. Lin ◽

Dean K. Sheu

Keyword(s):

Sheet Metal ◽

Layout Design ◽

New Approach ◽

Computer Aided Process Planning ◽

Step Process ◽

Strip Layout ◽

Evaluation Functions ◽

Progressive Dies ◽

Computer Aided ◽

Manufacturing Knowledge

This paper proposes a two-step process which uses the knowledge gathered in sheet-metal manufacturing practice as the basis to find proper layouts of strip in progressive dies. In the first step, manufacturing knowledge is used to formulate various rules to cluster the punches into five categories for reducing the searching space of feasible layouts. Evaluation functions are then applied to find the better ones from the feasible layouts. This two-step process provides a new approach to solving the problem of “explosive combinations” in strip layout design

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Optimization of strip-layout using graph-theoretic methodology for stamping operations on progressive die: a case study

International Journal for Simulation and Multidisciplinary Design Optimization ◽

10.1051/smdo/2021004 ◽

2021 ◽

Vol 12 ◽

pp. 5

Author(s):

Shady Aly ◽

Hend Abdelaaty ◽

Osama Muneer Dawood ◽

Hussein M. A. Hussein

Keyword(s):

Layout Design ◽

Sorting Algorithm ◽

Process Technology ◽

Progressive Die ◽

Partially Ordered ◽

Graph Theoretic ◽

Strip Layout ◽

Increase Productivity ◽

Theoretic Technique

The design of the progressive die stamping process is optimized through minimizing the number of die stamping stations in the strip layout to reduce the die cost. In order to accomplish such end, in this study, a graph-theoretic based method is implemented to model and optimize the strip layout design. This method starts with mapping stamping features into stamping operations. This step is followed by constructing two graphs to model the precedence and adjacency constraints among stamping operations based on a set of manufacturing rules. These two graphs are called: operation precedence graph and operation adjacency graph. In the next step, a topological sorting algorithm clusters the operations into partially ordered sets. Then, a graph coloring algorithm clusters the partially ordered operations sets into final sequence of operations. The graph-theoretic technique has been implemented on a part currently manufactured by laser cutting process technology in some Egyptian factory in Cairo. This study indicated that the graph-theoretic technique offers several advantages including the ease of programming and transparency in understanding the obtained strip layout design. This is besides being a systematic and logically approach to obtain an optimized strip layout design. In general, the progressive die manufacturing can increase productivity of sheet metal works in Egypt, only in situations of mass production. The limitation is that it requires considerable skill level and training for labor to conduct die strip layout design.

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An expert system for selection of process parameters and strip-layout design for production of deep drawn sheet metal parts

International Journal of Internet Manufacturing and Services ◽

10.1504/ijims.2014.062432 ◽

2014 ◽

Vol 3 (3) ◽

pp. 263 ◽

Cited By ~ 2

Author(s):

Vishal Naranje ◽

Shailendra Kumar

Keyword(s):

Expert System ◽

Sheet Metal ◽

Process Parameters ◽

Layout Design ◽

Metal Parts ◽

Sheet Metal Parts ◽

Strip Layout ◽

Selection Of

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Automatic Definition of the Sequence of Operations in Progressive Dies

Volume 4: Fatigue and Fracture, Heat Transfer, Internal Combustion Engines, Manufacturing, and Technology and Society ◽

10.1115/esda2006-95304 ◽

2006 ◽

Author(s):

Fernando Fado´n Salazar ◽

Jose´ Enrique Cero´n Hoyos

Keyword(s):

Optimal Design ◽

Layout Design ◽

Die Design ◽

Progressive Die ◽

Strip Layout ◽

Progressive Dies ◽

First Approximation ◽

Two Phases ◽

Definition Of ◽

The Relationship

We are working in the design process of progressive dies to make that process more structured and, by this way, to be able to automate the different design phases. The basic phases that it’s necessary to follow in the design of a progressive die could be divided into two groups: 1. The strip layout design. This phase involves several steps such as to obtain blank development, to find the best layout, to define the sequence of operations, to calculate the forces... 2. The die design according to the strip layout previously designed. The characteristics’ die depends on the tools are necessary to use (standard or specific for each die), maintenance... These two phases are not independent between them, and the final and optimal design is achieved improving iteratively these phases. In the first phase, the strip layout design, one of the more important steps is to define all the operations that it’s necessary to carry out and the sequence that these operations have to follow to get the part with the wanted characteristics. In the present paper it’s presented a methodology and the software with its application. This methodology consists of extracting all data are going to be use to manufacture the part from its solid modeling or 3D representation. These data are used to create a relational diagram (or relational tree) that shows the relationship among the different features that form the part. Once this tree is represented, it’s used to define the operations that are going to be made and to obtain a first approximation to the sequence of operations that the designers could change according their experience.

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