摘要:
The apparatus (1) comprises at least two balancing rings (10) disposed in axial side by side relationship and coaxial with each other on the rotating body (13) to be balanced. The rings (10) are each unbalanced and rotatable with the rotating body (13), but can each be angularly rotated relative to the latter through positioning means (27). These means may comprise either a gear (29) that can be selectively engaged in rotation with peripheral toothings (28) of the rings (10) when the rotating body (13) is stopped, to bring the rings (10) to a relative angular position to which the situation of balance of the rotating body (13) corresponds, or locking elements to be selectively engaged with peripheral notches in the rings (10) to retain the rings (10) one by one while the rotating body (13) is rotated relative to said rings (10) through such an angle that the angular balance position is achieved.
摘要:
The device comprises at least two annular balancing elements (10) each having an unbalance and disposed in axial side by side relationship and coaxial with each other on the rotating body (6) to be balanced. The annular elements (10) are rotatable with the rotating body (6) but can be angularly rotated relative to the body (6) during rotation thereof. For this purpose, at least one pair of nozzles (16) is provided for sending fluid jets, in particular air or cooling liquid jets, tangentially onto the annular elements (10), more specifically onto radial fins of the annular elements (10), to temporarily speed them up or slow them down with respect to the rotating body (6), until reaching of an angular position at which the resultant unbalance vector of the annular elements (10) compensates for the unbalance vector of the rotating body (6).
摘要:
An apparatus (1) for balancing a rotating body by material addition is disclosed which comprises dispensing means for supplying a balancing material to be applied to the rotating body, the balancing material consisting in a semifluid product (6) susceptible of being dried, as a not yet polymerised resin, and the apparatus comprising a dispensing unit (7) for dispensing measured quantities (9) of the not yet polymerised resin on the rotating body, and a stabilising unit (14) for catalysing the polymerisation of the resin after dispensing of the same.
摘要:
A measuring apparatus (1) is provided which has two arms (8) connected to a protection casing (6) through fulcrums (9). Associated with the arms (8), externally of the casing (6), are feelers (10) adapted to come into contact with the workpieces (3) and, internally of the casing (6), sensors (11) for measuring the oscillations of the arms (8). Also provided are driving members adapted to exert at least one contact force and one release force tending to rotate the arms (8) in opposite directions and comprising at least one magnet (13) adjacent to the arms (8), magnetic elements (14) supported by the arms (8) and having active faces (14a) facing the magnet (13), and drive elements (15) adapted to selectively vary the polarities of the magnet (13) facing the magnetic elements (14).
摘要:
Provided herein is an apparatus for detecting vibrations in a machine tool (1) of the type comprising a rotor portion (2), which is provided with tool members (5) and defines an axis of rotation (2a), the apparatus (1) comprising a sensor assembly (3), which is able to rotate together with the rotor portion (2) and is designed to issue signals correlated to vibrations, and a supporting and amplification device (6) for amplifying said vibrations, which is set between the sensor assembly (3) and the rotor portion (2) and has a rotational asymmetry about the axis of rotation (2a) for any angle smaller than a full circle.