Patent FR-2994396-A1 (FR)
Title: Device, useful for cleaning a casting, comprises a frame having two parallel webs, and clamping device including a rotatable portion that rotates with the casting and a rotating unit about the axis perpendicular to two parallel webs
Inventor: CHEVALIER ROGER
IPC: B22D29/00
Filed: 2012-08-09
Abstract: The device comprises: a frame (2) having two parallel webs that are located opposite one another and form an interior space (4) within which a casting (3) is arranged to be cleaned; a clamping device (5) of the casting movable in translation between the two parallel webs for clamping the casting in the interior space; a hammering unit of the casting; a vibration unit (7) of the frame for subjecting the casting to vibration when clamped and hammered; and a unit for rotating the casting about an axis perpendicular to the two parallel webs. The device comprises: a frame (2) having two parallel webs that are located opposite one another and form an interior space (4) within which a casting (3) is arranged to be cleaned; a clamping device (5) of the casting movable in translation between the two parallel webs for clamping the casting in the interior space; a hammering unit of the casting; a vibration unit (7) of the frame for subjecting the casting to vibration when clamped and hammered; and a unit for rotating the casting about an axis perpendicular to the two parallel webs. The clamping device is rotatable and includes a rotatable portion that rotates with the casting and the rotating unit about the axis perpendicular to the two parallel webs. The vibration unit allows the frame to vibrate about a vertical axis or linearly along a horizontal axis. A rotatable portion of the clamping device, the casting and the rotating unit rotate relative to the two parallel vertical webs about the horizontal axis. A moving part of the clamping device comprises a rubber band for absorption of the vibration, a longitudinal turning body presenting a transverse wall on which the rubber band is fixed, and a cylindrical longitudinal wall in support against an interior surface of a ball bearing. The clamping device comprises a tooling plate resting against the rubber band by a first face and resting against the casting by a second face. The tooling plate comprises, fixed to its ends, a washer bearing on a front annular portion of the longitudinal turning body. The washer and the front annular portion have plane contact surfaces inclined compared to a radial direction. A movable unit in translation such as a shaft is secured in a longitudinal carrier body. The clamping unit comprises: a cylindrical front flange accommodating the ball bearing; a main cylindrical flange, movable in translation by a support in front of the cylindrical front flange, where the main cylindrical flange houses a pneumatic unit and includes inlet and outlet air orifices for filling or emptying air in the pneumatic unit; and a rear cylindrical flange in which the movable unit is housed. The rotating unit comprises an orientation unit that is movable in rotation. The frame presents the interior space closed by a rigid upper connection part resting against the two parallel webs and having two curved parts and a rigid lower connection part resting against the two parallel webs and having two curved parts. An independent claim is included for a method for cleaning a casting.