Drive head used for positioning, in numerically-controlled machine, includes clamping ring fastened to rotor yoke forming annular space for fluid

摘要

A clamping ring (8) is fastened to the rotor yoke, between the rotor yoke (5) and the casing, forming an annular space (10). this includes a deformable membrane (9) on the casing side. The annular space is connected via a fluid circulation line (11) with a pump. In the fluid return line, after the annular space, there is a valve permitting this line to be used as a coolant line or a pressure line. The fluid circulation line (11) from the fluid pump, forms a feed line leading through the casing cover (13) and stator into the annular space. The return line from the annular chamber, which includes the valve, is led to the pump through the rotor yoke (5) and rotor body (7) A rotary coupling (12) is used through the stator casing (6) to the exterior. The annular space (10) is arranged in the clamping ring (8). Alternatively the annular space is arranged in the rotor yoke (5) and is covered by the clamping ring, acting as a membrane.