Electric chuck
AssigneeH.S.D. S.r.l.
InventorGiancarlo Selci
Life of this patent
Estimating the term…
Abstract
An electric chuck constituted by an electric motor coupled to a chuck in which the rotating tool is engaged; the electric motor being provided with a cooling device for the rotor located within the interior of the casing of the electric motor; the cooling device being constituted by an annular heat sink fitted to the shaft of the rotor in contact with the armature of the rotor, and a calibrated nozzle for directing a jet of air over the annular heat sink; the chuck being provided with a release device for the rotating tool operated pneumatically and controlled by a source of air under pressure, and the said calibrated nozzle being connected to this source of air under pressure.
Claims20
An electric chuck (1) comprises an electric motor (2) provided with a stator (6), a rotor (5) mounted rotatably within the stator (6) about a first axis of rotation (A), and an outer casing (7) housing within its interior said stator (6) and said rotor (5);
- and cooling means (14) housed within the interior of said casing (7) for cooling the rotor (5);
- wherein said cooling means comprises at least one annular heat sink fitted to said rotor, and one blower outlet projecting from said casing directly above said heat sink in order to dissipate heat produced.
An electric chuck comprises an electric motor provided with a stator, a rotor mounted rotatably within the stator about a first axis of rotation (A), and an outer casing housing within its interior said stator and said rotor;
- cooling means housed within the interior of said casing for cooling the rotor;
- and a chuck for receiving a rotating tool, said chuck having a mechanical locking device for fixing said rotating tool securely with respect of said rotor for rotating the rotating tool itself about a second axis of rotation (X), and a release device operable to oppose the action of said mechanical locking device to release said rotating tool from said rotor, said release device being controlled by a source of air under pressure;
- wherein said cooling means are connected to said source of air under pressure.
Dependencies are inferred from the claim text.