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Design, Fabrication and Performance Tests of a Double-sided Sheet Hydroforming Test System

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Title Design, Fabrication and Performance Tests of a Double-sided Sheet Hydroforming Test System
 
Creator URMAMEN, Mustafa Kemal
ATAŞ, Gürkan
DİLMEÇ, Murat
TÜRKÖZ, Mevlüt
ÖZTÜRK, Osman
HALKACI, Hüseyin Selçuk
 
Subject Double-sided hydroforming process
Design
Performance test
Sheet hydroforming
 
Description 314-322
In this study, a double-sided sheet hydroforming (DSH) test system, which contains dies, sealing, pressure intensifiers, and a control unit, has been designed, built, and tested. The hydraulic numerical control system, which is currently used, has been modified as afour-axis where parameters are forming pressure, back pressure, punch position, and blank holder force. A hydromechanical deep drawing press has been modified in terms of die and sealing. New sealing components have been used to prevent leakage during the forming process because one side of the sheet is exposed to the forming pressure, and the other side is exposed to both the back pressure and the moving punch. Performance tests have been carried out to determine the limitations and capacity of the system. After the performance tests, it has been concluded that; the higher forming rates all along the process curve, the higher the pressure and force differences. However, the resultant error of the corresponding points has been only higher at the beginning of the process curve. In addition, the higher slopes in process curves have increased the pressure and force differences. A conical industrial part has been deformed by using hydromechanical deep drawing and DSH processes to test the performance of the DSH press. The wrinkling defect that occurred in previous hydroformed parts has been reduced remarkably by using back pressure in the DSH process. As a result, a double-sided sheet hydroforming test press has been successfully designed and manufactured. Finally, this study provides technical knowledge and can be used as a guideline for the design and performance evaluation of similar manufacturing systems.
 
Date 2023-06-22T09:44:34Z
2023-06-22T09:44:34Z
2023-06
 
Type Article
 
Identifier 0971-4588 (Print); 0975-1017 (Online)
http://nopr.niscpr.res.in/handle/123456789/62050
https://doi.org/10.56042/ijems.v30i2.1652
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source IJEMS Vol.30(2) [April 2023]