Development of a Computer-Controlled Drawbead Simulator for Sheet Metal Forming

Document Type

Article

Publication Date

1994

Department

Department of Mechanical Engineering-Engineering Mechanics

Abstract

A multiple-action hydraulic sheet metal strip drawing test device has been constructed for the purpose of studying the effectiveness of feedback controls in sheet metal forming. The apparatus simulates the flow of sheet metal in the blankholder and over the die shoulder during the stamping of sheet metal panels. Its special features consist of the ability to adjust both blankholder force and drawbead penetration while the strip is being drawn. A force transducer was developed to measure the forces in the sheet on either side of the die shoulder. Measurements from this unique transducer determine both the drawbead restraining force in the simulator and friction between the sheet and the die shoulder. Data demonstrating the capabilities of the equipment are presented.

Publication Title

CIRP Annals - Manufacturing Technology

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