Abrasive-smoothing/polishing tool
OwnerFranco Mazzainventor
Life of this patent
Estimating the term…
Abstract
A smoothing/polishing tool (10) of the type including a hollow cylindrical body (1), a plurality of expansion sectors (4) for a plurality of abrasives (6) integrally mounted on the external surface of an elastic bushing (7), fit on the expansion sectors (4). The tool (10) includes at least one key (11) insertable in one or more cavities (12) or notches obtained along one or more sectors (4); the key (11) bears one or more teeth (11A) adapted to interfere and be engaged with corresponding one or more holes or slits (13) obtained on the bushing (7); following the rotation of the smoothing/polishing tool (10), the key (11) drives the bushing (7) in rotation and at the same time supports the radial motion of the bushing during expansion.
Claims5
Smoothing/polishing tool (10) of the type comprising
- a. a hollow cylindrical body (1) with fitting (2) for coupling to a means for controlling the axial rotation (AA) thereof,
- b. a plurality of sectors (4), each of which inserted in a corresponding slit of a cylindrical, hollow shank (3);
- said sectors (4) controllable in radial position by means of a rod or pusher (5) having at least one conical end portion (9),
- c. a plurality of abrasives (6) placed on the external surface of a bushing (7);
- said bushing (7) in turn fit on the sectors (4);
- characterized in that it comprises at least one key (11) insertable in one or more cavities (12) or notches obtained along one or more sectors (4);
- the key (11) comprising one or more teeth (11A) which in assembled configuration come to interfere and be engaged with corresponding one or more holes or slits (13) obtained on the bushing (7);
- following the rotation of the smoothing/polishing tool (10), the key (11) drives the bushing (7) in rotation and at the same time supports the radial motion of the bushing during expansion.
Dependencies are inferred from the claim text.