Locking device for the releasable coupling of the rotor of an electric spindle

摘要

A locking device for the releasable coupling of a rotatable member (3-7) of an electric spindle to the stator (1,2,8-10) thereof, the rotatable member comprising a spindle shaft (10) housed within the stator and rotatably mounted thereto by means of bearing means (5,6), comprises an axial holding means (15) for the spindle shaft, said axial holding means being housed in a respective sliding seat provided in said stator and being capable of being moved transversally to the spindle shaft between a locking position in which said axial holding means engages respective hooking means (17) provided on said spindle shaft, and an unlocked position in which said axial holding means is disengaged from said hooking means, thereby the rotatable member can be decoupled from said stator. <IMAGE>