Browse Prior Art Database

Vacuum Fixture

IP.com Disclosure Number: IPCOM000090495D
Original Publication Date: 1969-May-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 27K

Publishing Venue

IBM

Related People

Hairabedian, BZ: AUTHOR

Abstract

It is often necessary to hold workpieces, or a work piece and a mask, together during a manufacturing operation. It is sometimes not convenient to place the parts in a standard vacuum table. This apparatus permits use of one of the parts as the worktable to which the fixture attaches. The fixture consists of transparent flexible diaphragm 10 bordered by tube 12 having apertures 14, as in the perspective view. Tube 12 is sealed at one end 16 and has fitting 18 at its other end for connection to a vacuum pump. In use, the fixture is turned over and placed against workpiece 20 with another workpiece 22 beneath its diaphragm 10, as shown in the sectional view. Then suction, applied to tube 12, evacuates space 24 beneath diaphragm 10 through ports 14.

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Vacuum Fixture

It is often necessary to hold workpieces, or a work piece and a mask, together during a manufacturing operation. It is sometimes not convenient to place the parts in a standard vacuum table. This apparatus permits use of one of the parts as the worktable to which the fixture attaches. The fixture consists of transparent flexible diaphragm 10 bordered by tube 12 having apertures 14, as in the perspective view. Tube 12 is sealed at one end 16 and has fitting 18 at its other end for connection to a vacuum pump. In use, the fixture is turned over and placed against workpiece 20 with another workpiece 22 beneath its diaphragm 10, as shown in the sectional view. Then suction, applied to tube 12, evacuates space 24 beneath diaphragm 10 through ports 14. This clamps diaphragm 10 tightly against part 22 and thus clamps 22 against 20 by atmospheric pressure. The fixture is useful in certain infrared soldering applications in which one workpiece 20 is of a size or shape which makes the use of a photographic-type vacuum frame or table inconvenient or impossible. In an alternative form of the fixture, where the nature of the diaphragm admits, the vacuum line can be connected directly to the diaphragm. In this case, tube 12 is replaced by a resilient border element on the diaphragm.

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