Patent Number: 6,253,650

Title: Hydraulic coupling for feeding fluid-driven actuators-particularly hydraulic motors, mounted on a rotating structure

Abstract: A hydraulic coupling for feeding hydraulic actuators, particularly for distributing pressurized oil to a plurality of hydraulic motors mounted on a rotating structure such as a drum feeder for feeding bars to an automatic multispindle lathe; the motors are angularly distributed around the rotation axis of the structure, and the coupling comprises a plurality of ducts which branch out axially from the structure and are angularly distributed with respect to the rotation axis; the ducts are connected to the delivery and the return of the motors at one end and, at the opposite end, by means of respective flexible hoses, to a stationary distributor for connecting the motors to a source of pressurized oil and to the oil discharge; the flexible hoses are arranged in a spiral around the rotation axis and have a length which allows the rotation of the structure with respect to the distributor through a preset angle; the distributor comprises valves for controlling the flexible hoses which are actuated so as to connect the intake and discharge of oil to and from the motors according to a programmed sequence.

Inventors: Drei; Andrea (Faenza, IT), Nenni; Enrico (Faenza, IT), Mingozzi; Renato (Russi, IT)

Assignee: Iemca Giuliani Macchine Italia S.p.A.

International Classification: B23Q 1/00 (20060101); B23B 013/00 ()

Expiration Date: 07/03/2018