Author Topic: Modeling and Simulation of Technological Parameters for Design and Optimization  (Read 3207 times)

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Author : Samedin Krrabaj, Xhelal Susuri
International Journal of Scientific & Engineering Research Volume 4, Issue 10, October-2013
ISSN 2229-5518
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Abstract— Very high development of the computer technology has contributed to increase the accuracy, quality and productivity in the metalworking industry with distortion. In this paper, are described some key problems in the process of the designing of the tools for blanking and punching, and to solve this problems is compiled and is used the program for generating technological parameters, that provides solutions which with a high safety can be realized in real conditions. The development of modern processes for the processing of sheet in the design phase requires the support of the FEM numerical methods and powerful CAD software’s. If is achieved the full integration then offered to us real conditions and competitive advantages. The defined model in this paper is constructed on a PC and integrated with a Solid Works CAD system, and provides the basis for analysis and simulation of the process which should enable to us to solve the optimal construction of the tool.
Index Terms — CAD system, Finite Element Methods, the generating, modeling, the parameters, optimization, simulation.

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1 INTRODUCTION
ese days, it is impossible to speak of any of the blanking and punching parameters process without implementing the finite element method in the modeling field and continuum behavior also and in the con-structive resolution analysis of the tool. Modeling and simula-tion offer many possibilities to solve various problems in the processing blanking process. In our case to solve this problem is worked a software program which gives us in the first step of working two options for the order of the parts in the tape and allows us to choose the most constructive possible solu-tion. With fully use of 3D design opportunities in the cross cutting of the integrity of the tool, can be transmitted the aimed space level of the virtual model and for any mutual contact of the cutting parts of the tool with the strip material. In this paper, special attention was paid to the finite element method which is undoubtedly powerful element for the nu-merical simulation of the blanking - punching process. Select-ed criterion for the optimizing the whole process represents the real values of the reached space between mobile upper elements of the tool and the cutter plate in the area of separa-tion of the material. This parameter has a crucial role in the quality of ready part, the required accuracy of geometry and timely exploitation tool. On the other side, large space values between the working elements reduce the quality of ready part as well as in the side surfaces and also in direction of the accuracy of its geometry.
For these reasons, software code, for the potential users al-lows the introduction of some space values for which are con-sidered to be necessary for the case given in the tool working surfaces and allows to continuous monitoring the changing of the blanking and punching force.

2 BLANKING AND PUNCHING TOOL DESIGN
2.1 The geometric model of the sheets parts
CAD model of the examined detail in our case is presented in figure 1. The model of willing detail is generated in Solid Works as a solid model. However, since the FEM systems of the sheet processing require surface models, then when neces-sary with a simple command is made the transformation which opportunities exist in almost all CAD systems.
Determining the optimal model especially is important in the determination of the complex contours of the willing detail, where except of the part of the processed contours should be taken into account the contours of the eventual connection of
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• Samedin Krrabaj, Dr.sc. Department of Production and Automation FME, Prishtina University, Kosovo, +37744143575, E-mail: samedinkrrabaj@gmail.com
• Xhelal Susuri, Msc. Technical High School in Prizren, Kosovo, +37744218081, E-mail: xhelalsusuri@gmail.com
Fig. 1. CAD model ready for production

the detail parts if it is complex. These are also very important input data’s for simulation of the process which is based on the model given in the experiment.
2.2 The programming solution for the designing of the tools
In order to achieve the objectives in this dissertation paper, all our efforts have resulted in the creation of a program called "prog. Blank" with the help of which is enabled the automa-tion of tool modeling process for processing punching and blanking with the parts of the sheet(. This program has mod-ules which enable the automation of the process of placement the part of the draws in Solid Works.

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