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Hitachi Ltd
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Hitachi Ltd
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Application filed by Hitachi LtdfiledCriticalHitachi Ltd
Priority to JP6792877ApriorityCriticalpatent/JPS542967A/en
Publication of JPS542967ApublicationCriticalpatent/JPS542967A/en
PURPOSE: The inexpensive rod rolling mill which can exactly control the loop, by connecting the differential gear boxy to the variable speed driver so as to be able to rotate relatively around the axial line of the differential gear, and by controlling the variable speed driver correspondingly to the output signal from the loop detector for the rolled material existing between the rolling mills.