The world's longest tunnel will take shape deep beneath the Swiss Alps on Friday when a giant drillingmachine clears a path for a key highspeed railway through the heart of Europe.
Based on the analysis of requests to pulse generator of highspeed small hole EDM drillingmachine, a new combination pulse generator is developed in this paper with modular design method.
Rigid connection between 6 and CNC highspeeddrilling center machine spindle system of machine spindle, the rigidity of bearing and gear performance and the spindle and the handle.