Penetrated tool system

摘要

A penetrating tool system for providing a penetration action in a workpiece. The system including a penetrating element and a basic displacement element for establishing a basic displacement between the workpiece and the penetrating element during which basic displacement the penetrating action is provided. An auxiliary displacement element for imparting to the penetrating element an auxiliary reciprocating displacement superimposed on the basic displacement during the penetration action. The auxiliary reciprocating displacement has a frequency and amplitude which are substantially invariant in time, independent of reactions of the workpiece to penetration, the frequency of the auxiliary reciprocating displacement being substantially greater than a frequency of the basic displacement. The tool system further including a balancing element for generating a force in the system substantially in line with counterbalancing inertial loads and reactions in the system set up by the auxiliary reciprocating displacement, the force being directed substantially in line with the auxiliary reciprocating displacement and in the direction opposite thereto.