Attempts to facilitate low volume production of soft aluminium cups with large drawing ratios by deep drawing based on Maslennikov's technique

Recent developments in friction-assisted sheet metal forming processes

“…There are numerous instances where friction opposes the flow of metal in forming processes. However, there are also several instances where the forming process is made possible by friction: rolling, drawing of tubes with a moving mandrel and Masllenikov's technique [1] for drawing very deep cups are striking examples of friction-assisted metal forming processes. Rolling is an example of a forming process that would not exist if not for friction.…”

Collar drawing using a urethane pad

“…In Maslennikov's technique [9][10][11][12][13], the drawing of a cup is accomplished by repeated squeezing of the sheet metal by an annular flexible pad. It is a drawing process that does not use a metal punch.…”