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Expanding Pin Alignment Fixture

IP.com Disclosure Number: IPCOM000085230D
Original Publication Date: 1976-Mar-01
Included in the Prior Art Database: 2005-Mar-02
Document File: 2 page(s) / 53K

Publishing Venue

IBM

Related People

Buckwald, HB: AUTHOR [+3]

Abstract

The fixture as shown in Figs. 1-3 is adapted for accurately locating or relocating a workpiece which has previously been punched, so that a predetermined work operation may be performed on the workpiece with its exact position known.

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Expanding Pin Alignment Fixture

The fixture as shown in Figs. 1-3 is adapted for accurately locating or relocating a workpiece which has previously been punched, so that a predetermined work operation may be performed on the workpiece with its exact position known.

Referring to the drawings, and especially Figs. 1 and 3, a split pin 10 having upper and lower spaced apart enlarged portions 11 and 12 are joined together by a recessed portion 13. Each split pin 10 includes an upstanding pin portion 14 and they are coupled at their enlarged portions 11 and 12 by dowel pins 15 and 16, respectively, to a top plate 17 and bottom plate 18.

A cam plate 19, intermediate the top and bottom plates 17 and 18, includes tear shaped camming surfaces 20 which embrace the recessed portions 13 of the pins 10. Both the top and bottom plates are suitably apertured so as to permit the split pin 10 to be separated one from the other by the force of the compression springs 21 and 22, which circumscribes the dowel pins 15 and 16, respectively, and are located between the pin halves.

Assuming that the holes in the punched material, not shown, which is to be accurately positioned are larger than the split pins 10 when the pins are in their closed position. The cam plate 19 is rotated in the direction of the arrow 24A in Fig. 2, until the pins 10 are closed; that is the pin recessed sections 13 operate against the tear drop shaped cam follower 20 in the cam plate 19 to effect a closing of t...