Face driver for milling and turning
- January 27, 2021
The driver discs are mounted on the unit without any radial play to enable very high accuracy, even when the rotational direction is reversed during machining. An hydraulic drive support compensates for face perpendicularity errors and ensures a precise connection to the workpiece.
The driving disc teeth press into the driven face of the workpiece, so torque can be adequately transferred, ideal when you can’t reclamp a shaft and need to machine it to the end, or when clamping marks are not allowed on the workpiece OD surface. Face drivers like the CoAE are typically used in the manufacture of drive shafts, gear shafts, camshafts, rotor shafts and crankshafts.
The new CoAE combines Röhm’s CoA and CoE. The CoA, which is mainly used for turning, incorporates hydraulic compensation of the driver discs. The CoE’s provides the zero-play feature optimized for mill-turn machining of workpieces up to 350 kg (772 lbs).
The CoAE can be axially loaded by up to 8 kN to transfer sufficient torque for workpieces of this size. The unit’s concentricity is a very precise 0.015 mm.
The driver discs are exchangeable and cover a diameter range from 8 mm up to 80 mm. For particularly hard workpieces, use driver discs with exchangeable hard metal inserts. Röhm provides separate driver discs for counter-clockwise and clockwise rotation, as well as bi-directional driver discs that support both counter-clockwise and clockwise rotation.