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Arrangement for Centering and Leveling a Gimbal

IP.com Disclosure Number: IPCOM000043458D
Original Publication Date: 1984-Sep-01
Included in the Prior Art Database: 2005-Feb-04
Document File: 2 page(s) / 71K

Publishing Venue

IBM

Related People

Lennon, KA: AUTHOR

Abstract

A fixed base plate 1 (Fig. 1) has a gimbal ring 2 mounted therein by a pair of diametrically disposed pins for rotation about a first axis relative to the base plate 1 and for slight axial movement along the first axis relative to the base plate 1. A gimbal plate 3 is rotatably mounted on a pair of pins for rotation about a second axis, which is orthogonal to the first axis, and for slight axial movement of the gimbal plate 3 along the second axis relative to the gimbal ring 2. Thus, the gimbal plate 3 has four degrees of motion. The gimbal plate 3, which has a central opening 5, supports a motor to test it for eccentricity. This requires restraining of the gimbal ring 2 and the gimbal plate 3 during testing, and the gimbal ring 2 and the gimbal plate 3 must be precisely centered and leveled each time that a motor is tested.

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Arrangement for Centering and Leveling a Gimbal

A fixed base plate 1 (Fig. 1) has a gimbal ring 2 mounted therein by a pair of diametrically disposed pins for rotation about a first axis relative to the base plate 1 and for slight axial movement along the first axis relative to the base plate 1. A gimbal plate 3 is rotatably mounted on a pair of pins for rotation about a second axis, which is orthogonal to the first axis, and for slight axial movement of the gimbal plate 3 along the second axis relative to the gimbal ring 2. Thus, the gimbal plate 3 has four degrees of motion. The gimbal plate 3, which has a central opening 5, supports a motor to test it for eccentricity. This requires restraining of the gimbal ring 2 and the gimbal plate 3 during testing, and the gimbal ring 2 and the gimbal plate 3 must be precisely centered and leveled each time that a motor is tested. A gimbal lock 6 (Fig. 2) includes an annular plate 7 having three arcuate segments 8 on its top surface 9. Each of the arcuate segments 8 includes a first leveling surface 10 for engagement by the bottom of a pin 11, which is attached to the gimbal plate 3, when the pin 11 rides up an inclined or cam surface 12 onto the first leveling surface 10. Each of the arcuate segments 8 also includes a second leveling surface 13 for engagement by the bottom of a pin 14, which is attached to the gimbal ring 2, when the pin 14 rides up an inclined or cam surface 15 onto the second leveling surface 13. Each...