MULTI-ROLL PLANETARY CHANGEABLE COMBINED MILL AND PRINCIPLE

摘要

A multi-roll planetary changeable combined mill comprises a roll complex (30), an upper rack (10), a lower rack (20), transmission devices (40, 50) and a screw-down device (60). n roll complexes with left and right supports are installed on the upper and the lower racks, the n roll complexes being radially and uniformly distributed with the cross section of a rolled piece as a center. The mill structure is reliable and reasonable, and has simple parts; a great number of rolls can synchronously and centripetally rotate, can be manually or automatically screwed down, and are convenient to change and guarantee reliable transmission; many forms of continuous rolling groups can also be formed; and the multi-roll planetary changeable combined mill can be used for rolling extremely large or small bars, pipes, profiled bars or wires.