IMPROVED ROLLING MACHINE FOR FORMING THREADED PORTIONS ON CYLINDRICAL BODIES AND FEEDBACKED FORMING PROCESS

摘要

Improved rolling machine for forming a threaded portion on cylindrical bodies, which comprises two or more forming rollers (6) provided with a threaded portion and drivable to rotate on the surface of a cylindrical body to be formed in order to make a corresponding threaded portion thereon. The machine comprises generator means (41) projecting a lighting pattern (42) susceptible of interfering with the external surface of the cylindrical body (50) to be formed, in order to generate a reflected light beam (43) indicative of the profile of the thread (8) already formed on the cylindrical body (50). Such light beam is captured by first sensor means (30) which communicate with calculation means (44) in order to process the images of the sensor means and obtain measurements of the profile of the thread (8) to be compared with sample measurements of a stored sample profile. In case of deviations, a logic control unit (45) drives at least one of the actuator means (15, 16, 40) responsible for adjusting the position of the single forming rollers (6) with respect to the cylindrical body to be formed (50) in order to restore the threaded portion in accordance with the design data.