End mill
US12275070B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 21, 2020 |
| Grant date | Apr 15, 2025 |
| Priority date | — |
| Expiry date | Feb 2, 2042 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23C2210/54
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The purpose of the present invention is to perform machining on a double-curved surface to have good finished surface characteristics while achieving high speed feeding. An end mill (2) is provided with a bottom blade (2A) formed in a curved convex and circular arc shape, and a radius blade (2B) located at the edge and formed in a circular arc shape. The bottom blade (2A) has a region where a blade part is not formed on the axis of the end mill (2), and the end mill (2) is further provided with a center blade (2C) in the region of the bottom blade (2A). The center blade (2C) is formed in a circular arc shape with a radius smaller than that of the circular arc part of the bottom blade (2A).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.