Abstract
For the purpose of cutting papers and laminated paper sheets cleanly, the best parameters of cutter revolution and cutting velocity were pursued. In the experiment, the revolving knife-edged cutter driven by a motor built in a die set is used. A newly developed electromagnetic micro press is also used for cutting with a speed up to 1. 5 m/s. As the cutting materials, ordinary paper and three kinds of laminated paper sheets are used. Obtained results from the experiments are as follows : by revolving the cutter, the cutting load and penetration depth necessary for perfect separation of the material can be substantially reduced. These effects are caused by the decrease in the so-called effective edge angle with the increase in cutter revolution. High velocity cutting can also reduce the penetration depth. The increasing inertia of the material to be cut and of backing plate is speculated to be a cause of the reduction. Cut surfaces can be remarkably improved by both of the above two effects, i. e., cutter revolution and high velocity.
