Multi-axis NC Machining Technology of Helical Gear Based on Four-axis Machining Center

In view of processing characteristics of large module gear,the multi-axis NC machining technology and processing characteristics of helical gear were analyzed.Tool path generation,machining program,tool path simulation,cutter interference and collision detection for machine tool and gear profile were discussed.The optimal method and process scheme of helical gear for multi-axis machining were found out.This method can not only make full use of the processing capacity of multi-axis NC machining center,but also give us a new way and thought for large module helical gear' s processing.