Process for grinding edges of a glass sheet

• US 5,928,060 A
• Filed: 07/28/1997
• Issued: 07/27/1999
• Est. Priority Date: 05/17/1996
• Status: Expired due to Fees

• Current Assignee: Bernard A. Fassler, Louis H. Lauch Jr, Mark J. Miller
• Original Assignee: Bernard A. Fassler, Louis H. Lauch Jr, Mark J. Miller
• Inventors: Miller, Mark A.
• Primary Examiner(s): Eley, Timothy V.
• Application Number:
  US08/901,817
• Time in Patent Office: 729 Days
• Field of Search: 451/5, 451/10, 451/11, 451/14, 451/41, 451/43, 451/44, 451/58, 451/218, 451/246, 451/394
• US Class Current: 451/5
• CPC Class Codes: B24B 17/026 for the periphery of plane workpieces, e.g. cams, lenses
• CPC Class Codes: B24B 51/00 Arrangements for automatic control of a series of individual steps in grinding a workpiece if applicable to other machine tools, G05B takes precedence
• CPC Class Codes: B24B 9/107 for glass plates while they are turning
• CPC Class Codes: B24D 7/00 Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor

Abstract

This invention provides a clean and inexpensive apparatus and method of rapidly grinding an edge of a sheet of glass. The method involves: locating a sheet of glass on a support surface, lifting a sheet by a rotatable support which is movable through two axes, lifting the sheet by a rotatable support, moving the sheet along the first axis to a predetermined height, moving the sheet along the second axis until the sheet makes contact with the grinding wheel, translating the sheet to maintain contact with the grinding wheel while the glass is rotated, and replacing the glass on a support surface after the entire periphery of the glass is ground. Also disclosed is an apparatus for performing this method.

Claims

1. A method of grinding the edge of a sheet of glass with a stationary multi-wheel grinder by releasably retaining a sheet of glass and moving said sheet of glass through three axes, depending on the size and shape of said glass sheet by the steps of:

locating a glass sheet, having an edge to be ground, on a support;

releasably retaining the glass sheet at a preselected location, corresponding to an axis of rotation, on said sheet;

lifting the glass sheet from the support to a preselected height corresponding to a preselected grinding wheel of the multi-wheel grinder;

grinding the edge of the sheet by simultaneously rotating and translating the glass sheet to maintain contact with the preselected grinding wheel of the multi-wheel grinder.

2. The method of claim 1 further comprising the step of:

entering the profile of the glass into a microprocessor and then controlling with the microprocessor the lifting, translating and rotating steps.

3. The method of claim 1 wherein the step of releasably retaining the sheet of glass comprises locating the sheet of glass prior to retaining the sheet of glass, such that sheet of glass is releasably retained at a preselected location.