Method of and apparatus for grinding the edges of glass sheets

US4426811A · kind A · utility

Assignee

• Flachglas Aktiengesellschaft · DE

Inventors

• Rudolf Eckardt · Wesel, DE
• Hans-Cristoph Neuendorf · Wesel, DE

Key dates

• Filing date: Sep 18, 1981
• Grant date: Jan 24, 1984
• Expiry date: Sep 18, 2001

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T83/4642
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A method of grinding glass sheets whose edges are polygons that are not symmetrical about a point is carried out in an apparatus having a supply station for supporting a stack of such sheets with all of the sheets in the stack in vertical registration, a grinding station adjacent the supply station having a grinding table rotatable about an upright grinding axis and adapted to support the sheets during grinding, a template secured to the grinding table, and a pair of grinders in the grinding station radially engageable with the edges of the sheet on its grinding table and radially displaceable by the template. The method of the invention comprises the steps of transporting the sheets one at a time from the stack in the supply station to the grinding station, simultaneously engaging the grinders with the sheet in the grinding station while rotating this grinding table with its template and the sheet on the table through 180.degree. to grind the edges of the sheet on the table, so that each such grinding operation displaces the template through 180.degree. about the axis. Finally every other sheet is rotated while being transported from the supply station to the grinding station thro…