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Browse Prior Art Database

Spindlette Timing Device

IP.com Disclosure Number: IPCOM000080431D
Original Publication Date: 1973-Dec-01
Included in the Prior Art Database: 2005-Feb-27
Document File: 2 page(s) / 51K

Publishing Venue

IBM

Related People

Gasparri, AS: AUTHOR [+3]

Abstract

The drawing is a top view of a portion of a machine for grinding a subject such as a ceramic wafer 2. A wafer to be ground is mounted on a flat surface of a spindlette 5 that is rotatably supported on a rotatable table 4. As table 4 rotates, it carries each spindlette 5 between a region 6 where it passes under a grinding wheel (shown in dashed lines) and a region 7, where a previously ground wafer can be removed from its spindlette 5 and a next wafer to be ground can be mounted on a spindlette.

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Spindlette Timing Device

The drawing is a top view of a portion of a machine for grinding a subject such as a ceramic wafer 2. A wafer to be ground is mounted on a flat surface of a spindlette 5 that is rotatably supported on a rotatable table 4. As table 4 rotates, it carries each spindlette 5 between a region 6 where it passes under a grinding wheel (shown in dashed lines) and a region 7, where a previously ground wafer can be removed from its spindlette 5 and a next wafer to be ground can be mounted on a spindlette.

In region 6, the spindlettes 5 are engaged by a moving belt, not shown, so that they rotate about a vertical axis as they pass under the grinder. Each spindlette has means for locking it against rotation when it enters region 7. A stationary, partially circumferential track 9 borders the spindlettes in region 7. Each spindlette has a member 3 having a flat portion 10 with two bearings 11, 12 that ride on track 9, and thereby hold the spindlette 5 from rotating. A ramp 14 is arranged to guide the spindlette 5 from its rotating condition in region 6 to its locked position in region 7.

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