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Browse Prior Art Database

Linear Rotary Bearing Sorter

IP.com Disclosure Number: IPCOM000044986D
Original Publication Date: 1983-Jan-01
Included in the Prior Art Database: 2005-Feb-06
Document File: 2 page(s) / 70K

Publishing Venue

IBM

Related People

Gianmoena, A: AUTHOR [+2]

Abstract

Described herein is a piece of test equipment for sorting the working bores of a linear rotary bearing to an accuracy of 0.0001 inch. The apparatus consists of two parts: the plug assembly shown in Fig. 1 and the torque head shown in Fig. 2.

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Linear Rotary Bearing Sorter

Described herein is a piece of test equipment for sorting the working bores of a linear rotary bearing to an accuracy of 0.0001 inch. The apparatus consists of two parts: the plug assembly shown in Fig. 1 and the torque head shown in Fig.
2.

The plug assembly shown in Fig. 1 consists of a base plate 10 and a slightly inclined rear plate 12, which may be at approximately 85 degrees to the horizontal, together with a group of 11 gauge plugs 14 which are precisely machined to 0-9995 to 1.0005 inches in .0001 increments.

The torque head, shown in Fig. 2, has the bearing 16 inserted therein and is placed over one of the plugs 14 of Fig. 1. Weight included on the torque head causes it to freely rotate in the event the plug is too small.

The bearing 16 is slipped inside the torque head, as shown in Fig. 2A. There are two fixed arms 18 and one spring-loaded arm 20 and the holding force is provided by a continuous coil spring 22 around the three arms 18 and 20. The three arms keep the outer race 27 from rotating in the torque head, and cone 28 with the aid of spring 29 prevents the bearing cage 30 from rotating inside the outer race, which in turn prevents the balls 31 from rotating. The latter will now cause sliding friction instead of rolling friction between balls 31 and plug 14 during testing, when the torque head is rotated against the plug 14.

The torque head applies a rotational torque to the bearing 16 by lever 24 and weight 26 attache...