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Segmented Collet

IP.com Disclosure Number: IPCOM000047164D
Original Publication Date: 1983-Oct-01
Included in the Prior Art Database: 2005-Feb-07
Document File: 2 page(s) / 45K

Publishing Venue

IBM

Related People

Dorn, M: AUTHOR

Abstract

Workpieces are securely but releasably held by flexible collet segments. The flexible segments are replaceable for different applications. Collet 10 includes base 11 which slidingly retains collar 12. A plurality of flexible collet segments, such as 15, 16 and 17, are fastened to collar 12 which is slightly larger in diameter than the workpiece (not shown). In a typical configuration in accordance with Fig. 1, four flexible collet segments are used but only 15-17 are shown in the partially sectioned view of Fig. 1. The flexible segments 15-17 are molded or manufactured of material that flexes slightly but retains its shape. Base 11 has a beveled cam surface 20 which engages similar cam surfaces, such as 21 of segment 15, to close the segments and secure the part in precise location for further processing.

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Segmented Collet

Workpieces are securely but releasably held by flexible collet segments. The flexible segments are replaceable for different applications. Collet 10 includes base 11 which slidingly retains collar 12. A plurality of flexible collet segments, such as 15, 16 and 17, are fastened to collar 12 which is slightly larger in diameter than the workpiece (not shown). In a typical configuration in accordance with Fig. 1, four flexible collet segments are used but only 15-17 are shown in the partially sectioned view of Fig. 1. The flexible segments 15-17 are molded or manufactured of material that flexes slightly but retains its shape. Base 11 has a beveled cam surface 20 which engages similar cam surfaces, such as 21 of segment 15, to close the segments and secure the part in precise location for further processing. This performs a holding operation with jaws that are replaceable when worn or contaminated. Pilot member 25 is retained relative to base 11 by a pin (not shown) passing through slot 26 and is biased outwardly relative to face 14 of base 11 by a spring (not shown). The workpiece is placed over pilot 25 which is then forced inwardly against the spring bias into base 11, thus forcing collar 12 inwardly until segments 15-17 are cammed into gripping relation on the workpiece. Note that the inner end of the workpiece is retained within the confines of the segments so that the end of the workpiece is effectively masked from the subsequent processing. F...