Throwaway insert
US6913426B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 21, 2003 |
| Grant date | Jul 5, 2005 |
| Priority date | — |
| Expiry date | May 21, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T407/245
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A throwaway insert enables reduction in cutting force and improves chip separation ability without sacrificing the strength of cutting edge thereof. An upper face of the throwaway insert is provided with an undulating portion, which is formed by alternately arranged concave portions and convex portions, so as to provide a wavy shape to the cutting edge. The undulating portion comprises four concave portions, i.e., a first deep-concave portion, a first shallow-concave portion, a second deep-concave portion, and a second shallow-concave portion. The first deep-concave portion and the second deep-concave portion are located so that effective cutting region of the cutting edge is divided into three portions having lengths substantially equal to each other, and the second deep-concave portion is made deeper than the first deep-concave portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.