Patent · US Expired

Method for making a mold half for laminated parts

US4805291A · kind A · utility

3Cited by

9References

4Claims

0Family size

Assignee

Messerschmitt Bolkow Blohm GmbH · DE

Inventors

Michael Hahn · Ottobrunn, DE
Peter Wackerle · Ottobrunn, DE
Peter Eschenfelder · Waldkraiburg, DE
Ralf-Thilo Schulz · Putzbrunn, DE

Key dates

Filing date	Jul 7, 1987
Grant date	Feb 21, 1989
Priority date	—
Expiry date	Jul 7, 2007

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/4984
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A mold component for forming a member consisting of a nondevelopable surface, such a member being an airfoil such as a wing or the like, is provided with an interior cavity in the shape of a developable surface which approximates the nondevelopable surface. In forming the mold cavity, points of equal tangential inclination on the non-developable surface are joined by straight lines and then the areas between the straight lines are formed as flat planar surfaces, thereby to form a developable surface which is an approximation of the nondevelopable surface. A flat planar development is then formed from this developable surface and bends are made therein at the straight lines in order to form thereby the mold cavity. A substantial number of said bends extend non-parallel to each other and none of the bends intersect.

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