Our external whirling units can be splite into the two types: With or without inclination.Units with an inclination angle can be slant into the right angle of the thread. If the unit as the inclination as additional A-axis the data are been entered via the control system.
With this automatic inclination axis it is possible to machine progressive thread lead.
We are talking about mono units when we talk about units without inclination The units have an extrem stable iron casted frame. The need of a high level of stability is based on the big volume of chip removal and cutting depth which is used during the production of single lobe rotors, kneeding blocks or crankshafts.