NONCONVENTIONAL ASPECTS IN EVALUATION OF THE MACHINABILITY BY DRILLING UNDER CONSTANT FEED FORCE

Abstract

The information concerning the evaluation of distinct materials machinability by drilling under constant feed force can be used in optimal design of the cutting conditions for workpieces made of such materials. It is important to identify a method able to ensure the determination of machinability indexes with an adequate precision and in a short time. A theoretical analysis led to some drilling schemes that could be applied in order to determine a method for the evaluation of materials machinability by drilling under constant force feed. An experimental equipment was designed, built and tested by considering a machining scheme resulted as a consequence of the analysis of the drilling schemes identified in the specialty literature. As a result of the experimental research developed by means of the equipment, some empirical mathematical models were established, in order to differentiate distinct materials from the point of view of machinability by drilling under constant force feed.machinability by drilling