Tandem mill drive control system
US4167105A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 29, 1977 |
| Grant date | Sep 11, 1979 |
| Priority date | — |
| Expiry date | Aug 29, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21B2275/12
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A rolling mill section for rolling or roughing slab, plate, billet or structural section is provided with a load sensing arrangement for determining if the extent of non-synchronization between the respective drive motors of the rougher stand and the edger stand is sufficient to cause significant tensile or compressive loading in the member being rolled, as it passes between the two stands. The existence of such loading is determined by providing a coupling or utilizing existing mechanical connection of the one or both structures of the stands, and measuring reactive forces generated thereat by the passage of the member being rolled, tending to displace one stand relative to the other. A readout from the force measuring means is used to control the relative torques of the respective stand motors so as to promote synchronicity of the two drives, in order to reduce damaging overloads in the edger or in the rougher which otherwise result when significant lack of synchronicity is present. The invention is directed to a rolling mill and in particular to a mill section containing a rougher stand and an edger stand in adjacent relation, as in a steel mill, wherein the member being rolled …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.