Mold machining method using end mill
US11697164B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 7, 2020 |
| Grant date | Jul 11, 2023 |
| Priority date | — |
| Expiry date | Oct 22, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T409/307616
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A mold machining method using an endmill, the contour of a cross section of the mold being concave and continuous in an area, a ratio of the maximum to the minimum of radius of curvature of the contour of a portion of the area (a first area) being 2 or greater, and a blade of the endmill having a second area where the contour of a cross section is similar to the contour of the first area, the method comprising the steps of determining a spiral path of the endmill such that each point of the first area is machined by a portion of the second area, corresponding to said each point in the similarity, and a radial interval between the spiral tool path is maximized while keeping surface roughness of the machined mold at or below a predetermined value; and machining the mold along the path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.