An investigation of Forming through using the new method of ball deep drawing and comparing its thickness distribution and forming force with the conventional deep drawing

Gorji, Abdolhamid; Mohammadian, Esmaeil; Mirzai, Mohammad Ali

An investigation of Forming through using the new method of ball deep drawing and comparing its thickness distribution and forming force with the conventional deep drawing

Authors

Abdolhamid Gorji

Esmaeil Mohammadian ¹

Mohammad Ali Mirzai ²

¹ Graduate student

² Faculty member

Abstract

Forming media in metal forming processes is so important. Since the forming media in Ball deep-drawing process is discrete, it is quite flexible. In this paper, thickness distribution and required force for forming of conical part by ball deep-drawing and conventional deep-drawing processes using finite element simulation and experimental stages, were studied. In this research, sheets were used made St14 steel and brass wit 1mm thickness. The experimental results are in good agreement with simulation results. The results showed the sample formed by conventional deep-drawing process had more uniform thickness distribution than ball deep-drawing, but the maximum thinning in the parts of ball forming process was less than conventional deep-drawing process. Also it was observed that required force for ball deep drawing process is more than the conventional deep-drawing process. It was observed that with increasing radius of the input die, the force required to stretch the ball deep-drawing and ball processes is decreased, also with increasing radius of the input die is reduced thinning amount. It was noted that one of the advantages of ball deep drawing process than traditional deep drawing process is achieved a negative slope part.

Keywords

Sheet metal forming

Deep drawing

ball forming process

Finite element simulation

the thickness distribution