Method, module, and apparatus for roll-processing external pipe thread, and external pipe thread production line
US10913103B2 · kind B2 · utility
1Cited by
2References
3Claims
0Family size
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Key dates
| Filing date | Jun 8, 2016 |
| Grant date | Feb 9, 2021 |
| Priority date | — |
| Expiry date | Apr 24, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21H3/04
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Provided is a method for performing an external pipe thread process on a hollow blank by at least twice rolling, wherein amount of rolling wheels in a rolling wheel set, used in any two back-to-back rolling processes in a processing sequence, are different in parity. Further provided are various roll-processing modules and corresponding rolling apparatuses, achieving the above processing method and having a simple structure, portability and practicality. A hollow blank is not liable to deform when performing an external pipe thread rolling process thereon, thereby improving a processing yield.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.