Ring rolling mill and method for manufacturing ring rolled material
US10286443B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2016 |
| Grant date | May 14, 2019 |
| Priority date | — |
| Expiry date | Jun 21, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21H1/06
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A ring rolling mill includes: a rotary drive main roll and a mandrel roll, which are for reducing the thickness of and rolling a ring-shaped material from the radial direction; a pair of rotary drive axial rolls for reducing the thickness of and rolling the ring-shaped material from the axial direction; a measuring roll for measuring the diameter of the ring-shaped material during rolling; and a speed control unit for controlling the speed of the axial rolls. The speed control unit is configured to repeat measuring the diameter at predetermined time intervals Δt and comparing a measurement value Lt of the diameter at time t and a measurement value Lt+Δt of the diameter at time t+Δt, and the speed control unit is further configured to maintain the speed of the axial rolls unchanged upon the result of the comparison being Lt+Δt<Lt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.