Browse Prior Art Database

Automatic Ferrite Positioning

IP.com Disclosure Number: IPCOM000091190D
Original Publication Date: 1969-Nov-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 36K

Publishing Venue

IBM

Related People

Bell, R: AUTHOR [+3]

Abstract

It is often required to precisely position and rigidly secure small, fragile elements that are joined to larger assemblies. For example, very small ferrite pieces are used to form a magnetic transducer that is then assembled to an air-bearing slider support such as used in disk file noncontact recording. To enable such delicate and precise assembly, a closed circuit television system is employed. Television camera 10 repetitively sweeps an area between a reference point and the apex of the magnetic gap of the ferrite core. These sweeps are counted electronically and processed by computer 12. Either horizontal or vertical scanning can be employed. The readout signal from camera 10 is fed through buffer amplifier and interface 20 to computer 12.

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Automatic Ferrite Positioning

It is often required to precisely position and rigidly secure small, fragile elements that are joined to larger assemblies.

For example, very small ferrite pieces are used to form a magnetic transducer that is then assembled to an air-bearing slider support such as used in disk file noncontact recording. To enable such delicate and precise assembly, a closed circuit television system is employed. Television camera 10 repetitively sweeps an area between a reference point and the apex of the magnetic gap of the ferrite core.

These sweeps are counted electronically and processed by computer
12. Either horizontal or vertical scanning can be employed. The readout signal from camera 10 is fed through buffer amplifier and interface 20 to computer 12. A digital error signal is developed by comparing the count and a predetermined reference count. The error signal is applied through control circuit 14 to position control or stepping motor 16. This changes the position of the ferrite work element that is retained in holding fixture 18.

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