40355 ⎘
Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor for turning specially-shaped surfaces by making use of relative movement of the tool and work produced by geometrical mechanisms, i.e. forming-lathes for turning helical or spiral surfaces
Sub-classes:Method for cutting a thread on a rotating workpiece
#2Threading device and threading method
#3Scroll machining method and scroll machining apparatus
#4Thread whirling device and turning machine comprising a thread whirling device
#5Method of manufacturing screw thread and screw thread