Browse Prior Art Database

Precision Split Axis Positioning Table

IP.com Disclosure Number: IPCOM000052174D
Original Publication Date: 1981-May-01
Included in the Prior Art Database: 2005-Feb-11
Document File: 2 page(s) / 34K

Publishing Venue

IBM

Related People

Geany, GM: AUTHOR [+4]

Abstract

A precision split axis positioning table is provided which permits precise angular alignment on a dual-axis positioning table. Typically, positioning tables are constructed having three plates, with the center plate mounting linear roller bearings for both the X and Y axes of the assembly.

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Precision Split Axis Positioning Table

A precision split axis positioning table is provided which permits precise angular alignment on a dual-axis positioning table. Typically, positioning tables are constructed having three plates, with the center plate mounting linear roller bearings for both the X and Y axes of the assembly.

It is proposed here to split the center plate into plates 1 and 3, as shown in the figure, to allow separate alignment of each axis to the required linear geometric specification. The X and Y stages are coupled together via a pivot point located at a corner of plates 1 and 3, and adjustment wedges are located diagonally opposite this point. Pivoting is achieved by pin 5 accommodating hole
7.

The wedges are adjusted, moving the stages relative to each other radially about the pivot point. This provides for a precision orthogonality alignment capability.

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