Rotary cutting tool with high ramp angle capability
US11865629B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 4, 2021 |
| Grant date | Jan 9, 2024 |
| Priority date | — |
| Expiry date | Jan 11, 2042 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23C2210/282
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A rotary cutting tool includes a shank portion, a cutting portion, and a cutting tip. The cutting portion includes a plurality of blades and a plurality of flutes. Each blade includes a leading face, a trailing face, and a land surface extending between the leading face and the trailing face. The cutting end includes an end cutting edge having a first end face cutting edge portion formed with a positive, neutral or negative radial angle, a positive dish angle and a negative axial rake angle, and second end face cutting edge portion formed with a highly positive radial angle, a positive dish angle and a negative axial rake angle. The highly positive radial angle of the second end face cutting edge portion enables the rotary cutting tool to perform a ramp operation at very large ramp angles of between about 15-45 degrees.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.