Work spindle with cooling circuit for cooling the motor has integrated motor with casing bored with holes in both radial and axial directions, cooling and reverse canals

摘要

The invention is a work spindle such as a milling, drilling or grinding spindle (17) with an integrated motor (8) and a cooling circuit which is lead out through radial and axial placed cooling bores (4,5) in the motor housing (1) and a cooling canal (3) and reverse canal(6). The cooling circuit is located in the casing and covered with a shell (2) The cooling fluid flowing in the cooling canals enters the motor housing via the cooling bores.