Patent 7506424 was granted and assigned to Okuma Corporation on March, 2009 by the United States Patent and Trademark Office.
A rotary tool-equipped tool rest is provided, including a movable member made to move frontwardly when a turret is clamped with respect to a non-swiveling housing after swiveling and indexing. Then, a phase determining pin provided in the turret is made to project and engage with the non-swiveling housing. Further, a coupling mechanism to clamp the turret with respect to the non-swiveling housing has three coupling members.