Zigzagging control method for workpiece
US11850644B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 10, 2020 |
| Grant date | Dec 26, 2023 |
| Priority date | — |
| Expiry date | Sep 19, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21B38/08
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
There is provided a zigzagging control method for a workpiece including: an estimation step of, before rolling of a tail portion of the workpiece, acquiring at least any one of an inter-roll thrust force estimated based on an inter-roll cross angle and an inter-roll friction coefficient and a material-roll thrust force estimated based on a material-roll cross angle and a material-roll friction coefficient; and a tail control step of, during the rolling of the tail portion of the workpiece, measuring work-side and drive-side rolling loads, correcting a rolling load difference or a rolling load difference ratio based on any two of acquired parameters including a roll-axis-direction thrust counterforce at the measurement of the rolling loads, the inter-roll thrust force, and the material-roll thrust force, and performing reduction leveling control on a rolling mill based on the corrected rolling load difference or rolling load difference ratio.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.