Flemming Falck Damborg

Applying the finite-element method for determination of tool wear in conventional deep-drawing

Abstract The prediction of tool wear in conventional deep-drawing is accomplished using the finite-element method. The distribution of tool wear on the draw-die profile is obtained and compared to industrial observations. This is achieved by proposing a semi-empirical wear model in which the tool wear is a function of both the normal pressure and the relative velocity between the sheet and the tooling. Furthermore, a parameter study has been carried out to see the effect on the tool wear when changing selected parameters, for example the blank thickness and the strain hardening.

Optimization of the draw-die design in conventional deep-drawing in order to minimise tool wear

Abstract An important problem in the production of drawn parts is tool wear, especially at the draw-die. If tool wear can be reduced this can increase the tool lifetime and make a more continuous production flow, due to a reduction in the number of break-downs when the tools have to be re-polished. This paper presents an attempt to reduce tool wear using the finite-element method and a general optimization technique to re-design the geometry of the draw-die profile of a deep-drawing with respect to minimizing the tool wear.