Marposs Societa' Per Azioni

Alessandro Ruggeri

Andrea Turrini

Daniele Lanzoni

Valerio Dondi

Davide Castaldini

Balancing system for a rotating spindle () of a machine tool (); the balancing system has a rotating part comprising a balancing head () with at least one balancing mass () and at least one electric motor () which is adapted to regulate the position of the balancing mass; the rotating part also includes a vibration sensor () and a control system () with at least one hardware () and at least one software () executed by the hardware; the balancing system also includes a two-way contactless communication system () which establishes communication between the rotating control system and a fixed processing and control electronics () connected to a machine tool control unit (). The software of the control system features: a management application () which performs all the management of the balancing head and the vibration sensor during normal operation, and a service application () which, when the control system is powered after a suspension of the power supply, automatically starts up and starts the management application or, if a software update is required, overwrites the existing version of the management application with a new version.

Balancing system for a rotating spindle of a machine tool and relative control method

Method for contactless power transmission between a stationary part () and a movable part () and electrical power supply circuit () for implementing the method comprising an air-coupled transformer () provided with a primary resonant circuit with a primary coil () supported by the stationary part and a secondary resonant circuit with a secondary coil () facing the primary resonant circuit and supported by the movable part. The primary resonant circuit is fed with an alternating primary electrical voltage (V) which causes a primary electrical current (I) to circulate. The primary electrical current (I) induces in turn in the secondary resonant circuit an alternating secondary electrical voltage (V) which causes a secondary electrical current (I) to circulate. An electrical variable influencing the achievement of the resonance condition is adjusted, for example the frequency (F) of the primary electrical voltage, in such a way to operate in a resonance condition. The distance (d) between the stationary part and the movable part is determined as a function of a value of such electrical variable. A contactless connection system includes the stationary and movable parts and the electrical power supply circuit.

Method for contactless power transmission between a stationary part and a movable part, electrical power supply circuit and contactless connection system including the electrical power supply circuit

Measuring assembly with a measuring apparatus and a recognition system, and recognition method to detect the correct positioning of a removable device such as a comparator to check the shape and/or dimensions of a mechanical part with respect to a stationary part that includes at least one mechanical reference for the removable device. The system comprises a field source disposed in the stationary part that generates a field and a matching element disposed on the removable device that is able to alter the propagation of this field if correctly positioned relative to the field source. A sensor fixed to the stationary part in an appropriate position detects or not the field and generates a resulting detection signal detection or non-detection signal. A processing unit receives the signal generated by the sensor and on the basis of this provides information about the correct or incorrect positioning of the removable device with respect to the stationary part. The recognition system can be of the magnetic or optical type.

Growing community of inventors

Bologna, Italy

Alessandro Ruggeri