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Dimensional Gauge

IP.com Disclosure Number: IPCOM000085414D
Original Publication Date: 1976-Apr-01
Included in the Prior Art Database: 2005-Mar-02
Document File: 2 page(s) / 51K

Publishing Venue

IBM

Related People

Szydlowski, FD: AUTHOR [+2]

Abstract

A critical dimension between the surface of a toothed roll and the center line of a shaft is established with a dial micrometer.

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Dimensional Gauge

A critical dimension between the surface of a toothed roll and the center line of a shaft is established with a dial micrometer.

In Fig. 1. the critical dimension l can be accurately measured, despite the irregular surface of the roll, by inserting a shim between the surface and the micrometer stem. For a known shim thickness d, the dial will indicate the dimension l-d. The same accuracy can be obtained with a preset gauge (Fig. 2). The roll is adjusted to the right along the path A to hold the gauge point against a shim. The roll is then moved to the left until the gauge point swings free indicating that the dimension l has been achieved. The gauge is moved along the shaft to align the roll center line with the shaft center line.

The shims may be eliminated by shaping the micrometer stem to mate with the roll surface (Fig. 3). However, a preset gauge using this variation will not swing free when the roll surface-to-shaft center line dimension is reached.

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