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Cylinder Probe

IP.com Disclosure Number: IPCOM000078546D
Original Publication Date: 1973-Jan-01
Included in the Prior Art Database: 2005-Feb-26
Document File: 2 page(s) / 41K

Publishing Venue

IBM

Related People

Durkot, WJ: AUTHOR

Abstract

Described is a device which is able to detect a minute dimensional change on a small delicate part in a confined area. The device is an electropneumatic measuring device consisting of a proximitor detector, encapsulated within a dual-pressure double-acting pneumatic cylinder. The air cylinders are used as the loading and detecting members, while the proximitor takes the actual measurement.

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Cylinder Probe

Described is a device which is able to detect a minute dimensional change on a small delicate part in a confined area. The device is an electropneumatic measuring device consisting of a proximitor detector, encapsulated within a dual- pressure double-acting pneumatic cylinder. The air cylinders are used as the loading and detecting members, while the proximitor takes the actual measurement.

The construction of the unit resembles a cylinder within a cylinder. There is a high-pressure cylinder 4 in which the proximitor detector 1 is mounted. When activated, its piston 2 seats in the housing 6 and positions the proximitor detector. The second cylinder is located inside of the high-pressure cylinder 4 and is activated by low-pressure air. Connected to the low-pressure piston 5 is the probe 3 that actually loads and detects the part's surface.

In order to make its change of distance away from the proximitor more significant, the low-pressure piston 5 has a brass surface on the side facing the proximitor. In the range of amplification, and offset being employed, brass proved to exhibit the most usable distance change vs. output relationship. Other materials may be substituted to obtain the results desired.

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