Eldorado M75-30T's Servo-Driven Fixturing Improves Gundrilling Accuracy

The Eldorado M75-30T gundrilling machine now features an option for a servo-driven fixturing assembly. This option allows the machine operator to more quickly load and unload parts from a more ergonomic position, the company explains. The fixturing assembly grips the tailstock end of the workpiece and rotates it in the opposite direction of the gundrill tool rotation to improve accuracy. A Beckhoff servomotor rotates the ballscrew, which provides advance/retract motion for the counter-rotation assembly.

The servo-driven movement of the assembly is described as an improvement over the previous manual handwheel actuation. Operated with a toggle switch, the servo-driven option is faster and more repeatable and eliminates repetitive motion for the operator. Safety features include a torque limiter on the servo drive and mechanical limit switches on the slide. These features prevent the operator from crashing the fixturing assembly and damaging the machine.