Stamping

The present work studies the effect of over-rolling performed on a skin-pass mill on the drawability of a Ti-stabilized IF steel. Tests have been carried out with increasing skin-pass reductions (up to about 1%) and the corresponding mechanical properties, microstructures, textures and related forming limit curves (FLC) have been assessed. The results have shown that the yield strength increased, the strain-hardening coefficient (n) decreases, with increasing skin-pass over-rolling. The FLC results presented results where the scatter showed no marked effect, for the studied range of over-rolling.

The binder force in sheet metal forming controls the material flow into the die cavity, and maintaining precise material flow characteristics is crucial for producing a high-quality stamped part. Process control can be used to adjust the binder force based on tracking a reference punch force trajectory to improve part quality and consistency. The purpose of this paper is to present a systematic approach to the design and implementation of a suitable MIMO process controller. The approach includes modeling of the sheet metal forming process, and the design of the process controller based on simulation. Experimental results from a complex-geometry part show that the MIMO process controller, designed through simulation, is effective.

We hereby declare that the thesis project entitled "DESIGN AND SOFTWARE IMPLEMENTATION OF EXAM PAPER ATTACHING MACHINE" submitted for B. Sc. Degree in electromechanical is our original work and the thesis project has not formed the basis for the award of any degree, associate ship, fellowship or any other similar titles.