Model-Based Simulation and Optimization of Cutting Operations in Sheet Metal Working

摘要

This paper presents method to calculate optimum punch entry inside the die block to avoid damage of the cutting edges. Experimentation is carried out on a hundred tonne capacity hydraulic press (AMINO, Japan make) with an inching facility. Piercing die with a hole size of 30 mm is used. Ten different materials are used with varying thicknesses. Punch entry was controlled by inching with 0.05 mm downward movement. Entry readings were noted at the point of fracture. Thickness and punch entry are correlated and a model is designed to compute percentage penetration with respect to thickness. Models are checked by simulation for various materials with varying thicknesses. These models we propose for all the industries to set the cutting dies at optimum entry to avoid damage of cutting edges.