the machine consists of a frame which includes a saddle consisting of a longitudinal slide, a traverse slide and a swiveling table (on request). the tool is secured to the head of the tool-holding slide, which vertically ......the machine consists of a frame which includes a saddle consisting of a longitudinal slide, a traverse slide and a swiveling table (on request). the tool is secured to the head of the tool-holding slide, which vertically slides on the fixed and tilting head. an eccentric saddle connected to a connecting rod, transmitting the movement to the tool-holder, gives the movement. the speed regulation is obtained by means of a frequency switch that changes the motor revolutions and, therefore, the slide jogs.