Patent · US Expired

Method for milling casting moulds

US7025108B2 · kind B2 · utility

3Cited by

5References

8Claims

0Family size

Assignee

Actech GmbH Advanced Casting Technologies · DE

Inventors

Bertram Hentschel · Vellberg, DE
Reso Alijew · Freiberg, DE
Detlev Gantner · Freiberg, DE

Key dates

Filing date	Sep 21, 2002
Grant date	Apr 11, 2006
Priority date	—
Expiry date	Sep 21, 2022

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T409/304424
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

The invention relates to a method for producing heat-resistant casting molds from molding sand containing binder, particularly for producing an inner contour of casting molds for prototypes, large volumes and deep grooves often being produced especially in the machining of molds for rapid production of prototypes from casting materials. To increase efficiency, in a first step blocks of molding material are produced whose dimensions correspond to a mold cavity depth typically of 300 mm to 400 mm. The inner contour of the mold is then produced oversized with spacing close to the contour of the inner wall of the mold cavity by means of a roughing tool (4) that has an effective cutting diameter of 12 mm to 35 mm. The mold cavity is then machined by fast milling away of the oversize material following the contour, with a finishing cutter (3) that has a diameter-to-length ratio between 1:10 and 1:30.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.