Inventors:
John A. Grosso - Staatsburg NY
Reena G. Malangone - Charlotte NC
John J. Masten - Poughkeepsie NY
Richard M. Schroedl - Wappingers Falls NY
Robert Stokrocki - Poughkeepsie NY
Donald G. Will - Poughkeepsie NY
Assignee:
International Business Machines Corporation - Armonk NY
International Classification:
B25B 2714
B25B 1100
Abstract:
An apparatus is provided for positioning a workpiece with high accuracy and repeatably positioning the workpiece with similar accuracy while avoiding further manual alignment operations. Tapered pins, movable axially against a spring, are used to support a registration frame above the workpiece and allow attachment of the registration frame to the workpiece with high accuracy after initial manual positioning of the workpiece. After attachment of the registration frame to the workpiece, the use of similar, spring-loaded, tapered pins assures accuracy of positioning without further manual alignment. The axial motion of the pins is particularly advantageous during alignment of a plurality of workpieces in stacks and for processes requiring two-sided registration. During the alignment operation, a vacuum block is relatively movable on a base block and a workpiece immobilized on the vacuum block by a vacuum selectively applied to a portion thereof. When correct alignment has been achieved, the vacuum block is immobilized while the registration frame is attached by selective application of a vacuum to another portion of the vacuum block.