Method of manufacturing a columnar material
US6257038A · kind A · utility
0Cited by
2References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 4, 1999 |
| Grant date | Jul 10, 2001 |
| Priority date | — |
| Expiry date | Oct 4, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23P15/00
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The invention has been accomplished in order to provide a method of manufacturing a columnar material of metal having an excellent dimensional accuracy without the need of much work time and cost, said method comprising equally forming a multiplicity of longitudinal grooves on an outer periphery of a column-shaped raw material of metal, and then uniformly squeezing tip ends of portions between the respective longitudinal grooves to make the same flat to obtain a target outside dimension.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.