Browse Prior Art Database

Integral Armature Tachometer Assembly With Angular Adjustment

IP.com Disclosure Number: IPCOM000085609D
Original Publication Date: 1976-May-01
Included in the Prior Art Database: 2005-Mar-02
Document File: 2 page(s) / 61K

Publishing Venue

IBM

Related People

Broom, WE: AUTHOR [+5]

Abstract

The device as depicted in the figure shows a tachometer assembly 10, a motor assembly 12 and a hub assembly 14. A rotating device, not shown, is positioned on a shaft with hub assembly 14. Tachometer disc 16 and motor armature 18 are mounted on hub 14 for rotation. The axial location of tachometer disc 16 is keyed to hub 14 precisely. The axial location of hub assembly 14 is located on a rotating shaft by flats on a shaft, not shown. The design also simplifies the manufacturing process as well as custom servicing procedures of the armature tachometer assembly.

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Integral Armature Tachometer Assembly With Angular Adjustment

The device as depicted in the figure shows a tachometer assembly 10, a motor assembly 12 and a hub assembly 14. A rotating device, not shown, is positioned on a shaft with hub assembly 14. Tachometer disc 16 and motor armature 18 are mounted on hub 14 for rotation. The axial location of tachometer disc 16 is keyed to hub 14 precisely. The axial location of hub assembly 14 is located on a rotating shaft by flats on a shaft, not shown. The design also simplifies the manufacturing process as well as custom servicing procedures of the armature tachometer assembly.

With the rotating armature 18 the tachometer disc 16 being positioned on the same rotating shaft, not shown, signals derived from tachometer disc 16 and the rotating device, not shown, can be synchronized.

In order to achieve this synchronization capability, the stationary elements of the tachometer 10 (i.e., mask, photosensors, etc.) are mounted on plate 20. Plate 20 is circular and has a diameter which mates with reference surface 22. Plate 20 is attached to a support, not shown, by spring loaded attachment screw means 24. By torquing screw 26, plate 20 with its attached mask, photosensors, etc. will rotate with respect to reference surface 20 thereby allowing alignment of the signals from the tachometer assembly 10 and the rotating device.

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