Milling with insert having cutting-edge land of width increasing with depth of cut
US5876160A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 21, 1996 |
| Grant date | Mar 2, 1999 |
| Priority date | — |
| Expiry date | Aug 21, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T409/303808
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The cutting inserts of this patent are provided with positive cutting geometry and are especially adapted for service in face milling and shoulder milling raw castings and other hard-shelled workpieces by providing a cutting edge land which varies in width along the cut from narrowest at the bottom of the main cutting edge to broadest where the cutting edge meets the hard surface of the workpiece. In double-ended cutting edges, i.e., where the cutting edge is designed to cut equally in cutters of either hand of rotation, the maximum land width occurs at cutting edge midpoint and tapers to minimum width at each end. The surface of the land may also desirably be warped, twisting from radially positive rake at the bottom of the main cutting edge to neutral or even negative radial rake where the cutting edge meets the hard surface of the workpiece.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.